/* roulang page: index */
:root{
    --ink:#12140F;
    --ink-2:#3B4038;
    --ink-3:#6E736A;
    --paper:#F7F5EF;
    --surface:#FFFFFF;
    --surface-2:#EFF1E7;
    --primary:#0F2A22;
    --primary-hover:#174034;
    --accent:#C8F14B;
    --accent-2:#FF6B35;
    --line:#E2DED2;
    --line-strong:#C9C3B2;
    --ok:#2E7D46;
    --warn:#B4432A;
    --r-card:14px;
    --r-btn:10px;
    --r-hero:20px;
    --ease:cubic-bezier(.2,.7,.3,1);
    --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",ui-monospace,monospace;
    --sec-y:56px;
  }
  @media (min-width:768px){ :root{ --sec-y:72px; } }
  @media (min-width:1024px){ :root{ --sec-y:96px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; background:none; border:none; cursor:pointer; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  p{ margin:0; }
  h1,h2,h3,h4{ margin:0; font-weight:700; letter-spacing:-.02em; }
  .mono{ font-family:var(--font-mono); font-variant-numeric:tabular-nums; letter-spacing:0; }
  ::selection{ background:var(--accent); color:var(--ink); }
  :focus-visible{ outline:2px solid var(--accent-2); outline-offset:2px; border-radius:4px; }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{ padding-left:32px; padding-right:32px; } }
  @media (min-width:1280px){ .container{ padding-left:48px; padding-right:48px; } }

  /* ---------- 站点头部 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,239,.86);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
  }
  .site-header.is-stuck{ border-bottom-color:var(--line); }
  .nav-wrap{
    max-width:1280px;
    margin:0 auto;
    padding:0 20px;
    height:72px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
  }
  .nav-left,.nav-right{ display:flex; align-items:center; gap:26px; flex:1 1 0%; }
  .nav-right{ justify-content:flex-end; gap:22px; }
  .nav-link{
    position:relative;
    display:inline-block;
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    padding:6px 0;
    transition:color .18s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    height:2px;
    width:0;
    background:var(--accent);
    transition:width .22s var(--ease);
  }
  .nav-link:hover{ color:var(--ink); }
  .nav-link:hover::after{ width:100%; }
  .nav-link.is-active{ color:var(--ink); font-weight:700; }
  .nav-link.is-active::after{ width:100%; }
  .brand{
    flex:0 0 auto;
    display:flex;
    flex-direction:column;
    align-items:center;
    line-height:1;
    padding:0 22px;
    border-left:1px solid var(--line);
    border-right:1px solid var(--line);
  }
  .brand-main{ font-size:19px; font-weight:800; letter-spacing:-.01em; }
  .brand-sub{ font-size:11px; letter-spacing:.26em; color:var(--ink-3); margin-top:5px; }
  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border-radius:var(--r-btn);
    border:1px solid var(--line-strong);
    font-size:17px;
    transition:background .2s var(--ease), transform .2s var(--ease);
  }
  .nav-toggle:hover{ background:var(--surface-2); }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    line-height:1.2;
    padding:13px 24px;
    transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
  }
  .btn i{ font-size:13px; transition:transform .2s var(--ease); }
  .btn:hover i{ transform:translateX(3px); }
  .btn-primary{ background:var(--primary); color:var(--paper); }
  .btn-primary:hover{ background:var(--accent); color:var(--ink); transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); }
  .btn-ghost{ border:1px solid var(--ink); color:var(--ink); background:transparent; }
  .btn-ghost:hover{ background:var(--ink); color:var(--paper); transform:translateY(-2px); }
  .btn-accent{ background:var(--accent); color:var(--ink); }
  .btn-accent:hover{ background:var(--paper); transform:translateY(-2px); box-shadow:0 4px 0 rgba(247,245,239,.35); }
  .btn-sm{ padding:10px 18px; font-size:14px; }
  .btn-block{ width:100%; }

  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease), color .2s var(--ease), gap .2s var(--ease);
  }
  .link-arrow i{ font-size:12px; transition:transform .2s var(--ease); }
  .link-arrow:hover{ border-bottom-color:var(--primary); }
  .link-arrow:hover i{ transform:translateX(3px); }

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    border-radius:999px;
    font-size:13px;
    font-weight:600;
    padding:4px 12px;
    border:1px solid var(--line);
    white-space:nowrap;
  }
  .badge-green{ background:var(--surface-2); color:var(--primary); border-color:#DCE2CD; }
  .badge-orange{ background:rgba(255,107,53,.1); color:var(--accent-2); border-color:rgba(255,107,53,.22); }
  .badge-outline{ background:transparent; color:var(--ink-2); }
  .pill-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.02em;
    color:var(--primary);
    background:var(--surface-2);
    border:1px solid #DCE2CD;
    border-radius:999px;
    padding:5px 14px;
    margin-bottom:22px;
  }
  .pill-tag::before{
    content:"";
    width:7px; height:7px;
    border-radius:999px;
    background:var(--accent-2);
  }

  /* ---------- Hero ---------- */
  .hero{ position:relative; padding:52px 0 64px; overflow:hidden; }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(var(--line-strong) 1px,transparent 1px),linear-gradient(90deg,var(--line-strong) 1px,transparent 1px);
    background-size:72px 72px;
    opacity:.045;
    pointer-events:none;
  }
  .hero-grid{ position:relative; display:grid; grid-template-columns:1fr; gap:44px; align-items:center; }
  .hero h1{
    font-size:clamp(2.05rem,4.6vw,3.9rem);
    line-height:1.1;
    letter-spacing:-.02em;
    font-weight:800;
    max-width:15em;
  }
  .hero-sub{
    margin-top:22px;
    font-size:17px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:34rem;
  }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px 26px;
    margin-top:30px;
    padding-top:20px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--ink-3);
  }
  .hero-meta li{ display:flex; align-items:center; gap:7px; }
  .hero-meta .mono{ color:var(--ink); font-weight:700; font-size:14px; }
  .hero-media{ position:relative; }
  .hero-figure{
    margin:0;
    border-radius:var(--r-hero);
    overflow:hidden;
    border:1px solid var(--line);
    aspect-ratio:16/11;
    background:var(--surface-2);
  }
  .hero-figure img{ width:100%; height:100%; object-fit:cover; object-position:center; }
  .hero-card{
    position:absolute;
    left:0;
    bottom:-26px;
    min-width:236px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:16px 18px;
    box-shadow:0 4px 0 var(--primary);
    transform:rotate(-2deg);
  }
  .hero-card-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:7px 0;
    font-size:13px;
    color:var(--ink-3);
  }
  .hero-card-row + .hero-card-row{ border-top:1px dashed var(--line); }
  .hero-card-row strong{ font-size:14px; color:var(--ink); font-weight:700; }
  @media (min-width:1024px){
    .hero{ padding:72px 0 88px; }
    .hero-grid{ grid-template-columns:7fr 5fr; gap:56px; }
    .nav-toggle{ display:none; }
  }

  /* ---------- 指标条 ---------- */
  .metrics{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--paper); }
  .metrics-grid{ display:grid; grid-template-columns:repeat(2,1fr); }
  .metric{ padding:26px 18px; border-left:1px solid var(--line); border-top:1px solid var(--line); }
  .metric:nth-child(-n+2){ border-top:none; }
  .metric:nth-child(odd){ border-left:none; }
  .metric-num{
    display:block;
    font-size:clamp(1.6rem,3vw,2.1rem);
    font-weight:800;
    color:var(--accent-2);
    line-height:1.1;
    letter-spacing:-.01em;
  }
  .metric p{ margin-top:8px; font-size:13.5px; color:var(--ink-2); line-height:1.7; }
  @media (min-width:900px){
    .metrics-grid{ grid-template-columns:repeat(4,1fr); }
    .metric{ padding:32px 26px; border-top:none; }
    .metric:nth-child(odd){ border-left:1px solid var(--line); }
    .metric:first-child{ border-left:none; }
  }

  /* ---------- 通用板块 ---------- */
  .section{ padding:var(--sec-y) 0; }
  .section-alt{ background:var(--surface-2); }
  .kicker{
    font-size:13px;
    font-weight:700;
    letter-spacing:.16em;
    color:var(--ink-3);
    margin-bottom:14px;
  }
  .section h2{
    font-size:clamp(1.5rem,2.6vw,2.2rem);
    line-height:1.25;
    letter-spacing:-.02em;
    font-weight:800;
    max-width:20em;
  }
  .section h2::before{
    content:"";
    display:block;
    width:20px;
    height:4px;
    background:var(--accent);
    border-radius:2px;
    margin-bottom:16px;
  }
  .section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:18px;
    margin-bottom:40px;
  }
  .lead-text{ margin-top:18px; color:var(--ink-2); font-size:16px; max-width:30rem; }

  /* ---------- 功能特性 ---------- */
  .split-layout{ display:grid; grid-template-columns:1fr; gap:40px; }
  .split-aside .link-arrow{ margin-top:26px; }
  .feature-pair{ display:grid; grid-template-columns:1fr; gap:20px; }
  .feature-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:26px;
    display:flex;
    flex-direction:column;
    gap:14px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  }
  .feature-card:hover{ transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); border-color:var(--line-strong); }
  .feature-card h3{ font-size:1.2rem; line-height:1.4; }
  .feature-card p{ font-size:15px; color:var(--ink-2); }
  .feature-card .link-arrow{ margin-top:auto; }
  .card-figure{
    margin:0;
    border-radius:12px;
    overflow:hidden;
    aspect-ratio:16/10;
    background:var(--surface-2);
  }
  .card-figure img{ width:100%; height:100%; object-fit:cover; transition:transform .24s var(--ease); }
  .feature-card:hover .card-figure img{ transform:scale(1.03); }
  .feature-list{ margin-top:26px; border-top:1px solid var(--line); }
  .feature-list li{
    display:flex;
    gap:18px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
    align-items:flex-start;
  }
  .feature-list .num{
    flex:0 0 auto;
    font-size:14px;
    font-weight:700;
    color:var(--accent-2);
    letter-spacing:.06em;
    padding-top:4px;
  }
  .feature-list h3{ font-size:1.05rem; margin-bottom:6px; }
  .feature-list p{ font-size:14.5px; color:var(--ink-2); }
  @media (min-width:768px){
    .feature-pair{ grid-template-columns:1.4fr 1fr; align-items:stretch; }
  }
  @media (min-width:1024px){
    .split-layout{ grid-template-columns:320px 1fr; gap:56px; align-items:start; }
    .split-aside{ position:sticky; top:100px; }
  }

  /* ---------- 使用场景 ---------- */
  .scene-tabs{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:40px;
  }
  .scene-pill{
    font-size:14px;
    font-weight:600;
    padding:9px 20px;
    border-radius:999px;
    border:1px solid var(--line-strong);
    color:var(--ink-2);
    background:transparent;
  }
  .scene-pill.is-on{ background:var(--primary); border-color:var(--primary); color:var(--paper); }
  .scene-row{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    align-items:center;
    padding:32px 0;
    border-top:1px solid var(--line-strong);
  }
  .scene-media{
    margin:0;
    border-radius:var(--r-card);
    overflow:hidden;
    aspect-ratio:16/11;
    border:1px solid var(--line);
    background:var(--surface);
  }
  .scene-media img{ width:100%; height:100%; object-fit:cover; transition:transform .24s var(--ease); }
  .scene-media:hover img{ transform:scale(1.03); }
  .scene-copy h3{ font-size:1.3rem; margin:14px 0 12px; }
  .scene-copy p{ color:var(--ink-2); font-size:15.5px; }
  .dot-list{ margin-top:18px; display:grid; gap:10px; }
  .dot-list li{
    position:relative;
    padding-left:20px;
    font-size:15px;
    color:var(--ink-2);
  }
  .dot-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:.72em;
    width:6px;
    height:6px;
    background:var(--accent);
    border-radius:1px;
  }
  @media (min-width:900px){
    .scene-row{ grid-template-columns:5fr 6fr; gap:48px; }
    .scene-row-reverse .scene-media{ order:2; }
    .scene-row-reverse .scene-copy{ order:1; }
  }

  /* ---------- 案例 ---------- */
  .quote-card{
    margin:0;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-hero);
    padding:34px 28px;
  }
  .quote-text{
    font-size:clamp(1.15rem,2vw,1.5rem);
    line-height:1.65;
    font-weight:600;
    letter-spacing:-.01em;
    color:var(--ink);
  }
  .quote-footer{
    margin-top:28px;
    padding-top:22px;
    border-top:1px solid var(--line);
    display:flex;
    flex-wrap:wrap;
    gap:22px 40px;
    align-items:center;
    justify-content:space-between;
  }
  .quote-name{ font-size:14px; color:var(--ink-3); }
  .quote-stats{ display:flex; flex-wrap:wrap; gap:14px 34px; }
  .quote-stats div{ display:flex; flex-direction:column; gap:2px; }
  .quote-stats .mono{ font-size:1.35rem; font-weight:800; color:var(--accent-2); line-height:1.2; }
  .quote-stats small{ font-size:12.5px; color:var(--ink-3); letter-spacing:.02em; }
  .case-list{
    margin-top:24px;
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
  }
  .case-item{
    display:block;
    background:transparent;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px 24px;
    transition:transform .22s var(--ease), background .22s var(--ease), box-shadow .22s var(--ease);
  }
  .case-item:hover{ background:var(--surface); transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); }
  .case-item h3{ font-size:1.05rem; margin-bottom:8px; }
  .case-item p{ font-size:14.5px; color:var(--ink-2); margin-bottom:14px; }
  @media (min-width:768px){
    .quote-card{ padding:44px 44px; }
    .case-list{ grid-template-columns:1fr 1fr; }
  }

  /* ---------- 价格 ---------- */
  .plan-grid{ display:grid; grid-template-columns:1fr; gap:20px; }
  .plan{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:28px 26px;
    display:flex;
    flex-direction:column;
    gap:16px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease);
  }
  .plan:hover{ transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); }
  .plan-name{ font-size:1.05rem; font-weight:700; }
  .plan-price{ display:flex; align-items:baseline; gap:6px; }
  .plan-price .mono{ font-size:2.4rem; font-weight:800; letter-spacing:-.02em; line-height:1.05; }
  .plan-price span{ font-size:13px; color:var(--ink-3); }
  .plan-desc{ font-size:14px; color:var(--ink-2); }
  .plan-list{ display:grid; gap:10px; }
  .plan-list li{
    position:relative;
    padding-left:20px;
    font-size:14.5px;
    color:var(--ink-2);
  }
  .plan-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:.68em;
    width:6px;
    height:6px;
    background:var(--primary);
    border-radius:1px;
  }
  .plan-actions{ margin-top:auto; padding-top:6px; display:grid; gap:10px; }
  .plan-note{ font-size:12.5px; color:var(--ink-3); }
  .plan-featured{
    border:2px solid var(--primary);
    background:var(--surface);
    box-shadow:0 4px 0 var(--primary);
    order:-1;
  }
  .plan-featured-inner{ display:grid; grid-template-columns:1fr; gap:22px; }
  .plan-tag{
    display:inline-flex;
    font-size:12px;
    font-weight:700;
    letter-spacing:.1em;
    color:var(--paper);
    background:var(--primary);
    border-radius:999px;
    padding:3px 12px;
    margin-bottom:12px;
  }
  @media (min-width:768px){
    .plan-featured-inner{ grid-template-columns:1fr 1fr; gap:32px; align-items:start; }
  }
  @media (min-width:1024px){
    .plan-grid{ grid-template-columns:1fr 1.55fr 1fr; align-items:stretch; }
    .plan-featured{ order:0; }
  }

  /* ---------- 最新信息 ---------- */
  .news-layout{ display:grid; grid-template-columns:1fr; gap:20px; }
  .news-lead{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:28px;
    display:flex;
    flex-direction:column;
    gap:14px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  }
  .news-lead:hover{ transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); border-color:var(--line-strong); }
  .news-lead h3{ font-size:1.35rem; line-height:1.4; }
  .news-lead h3 a:hover{ text-decoration:underline; text-decoration-color:var(--accent); text-decoration-thickness:3px; text-underline-offset:5px; }
  .news-lead p{ font-size:15px; color:var(--ink-2); }
  .news-meta{
    margin-top:auto;
    padding-top:18px;
    border-top:1px solid var(--line);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
  }
  .news-meta time{ font-size:13px; color:var(--ink-3); }
  .news-side{ display:grid; grid-template-columns:1fr; gap:16px; }
  .news-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px 24px;
    display:flex;
    flex-direction:column;
    gap:12px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  }
  .news-item:hover{ transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); border-color:var(--line-strong); }
  .news-item-head{ display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; }
  .news-item time{ font-size:13px; color:var(--ink-3); }
  .news-item h3{ font-size:1.02rem; line-height:1.5; }
  .news-item h3 a:hover{ color:var(--primary-hover); text-decoration:underline; text-decoration-color:var(--accent); text-decoration-thickness:3px; text-underline-offset:4px; }
  .news-item p{
    font-size:14px;
    color:var(--ink-2);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-item .link-arrow{ margin-top:auto; }
  .empty-state{
    border:1px dashed var(--line-strong);
    border-radius:var(--r-card);
    padding:52px 24px;
    text-align:center;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:14px;
    color:var(--ink-3);
  }
  .empty-state i{ font-size:28px; color:var(--line-strong); }
  .empty-state p{ font-size:15px; }
  @media (min-width:768px){
    .news-layout{ grid-template-columns:1.15fr 1fr; }
    .news-side{ grid-template-columns:1fr; }
  }

  /* ---------- FAQ ---------- */
  .faq-list{ max-width:46rem; border-top:1px solid var(--line-strong); }
  .faq-item{ border-bottom:1px solid var(--line-strong); }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:20px 4px 20px 0;
    font-size:16.5px;
    font-weight:600;
    color:var(--ink);
    transition:color .18s var(--ease), padding-left .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary::after{
    content:"+";
    flex:0 0 auto;
    font-family:var(--font-mono);
    font-size:20px;
    line-height:1;
    color:var(--ink-3);
    transition:transform .22s var(--ease), color .22s var(--ease);
  }
  .faq-item[open] summary::after{ transform:rotate(45deg); color:var(--accent-2); }
  .faq-item[open] summary{ padding-left:16px; }
  .faq-item[open]{ box-shadow:inset 3px 0 0 var(--accent); }
  .faq-item summary:hover{ color:var(--primary-hover); }
  .faq-body{ padding:0 0 22px 16px; font-size:15px; color:var(--ink-2); line-height:1.85; }
  .faq-body p + p{ margin-top:10px; }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;
    background:var(--primary);
    color:var(--paper);
    overflow:hidden;
    margin:var(--sec-y) 0 0;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:repeating-linear-gradient(45deg,rgba(247,245,239,.9) 0 1px,transparent 1px 14px);
    opacity:.05;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:26px;
    padding-top:56px;
    padding-bottom:56px;
  }
  .cta-inner h2{ font-size:clamp(1.4rem,2.5vw,2rem); line-height:1.3; max-width:22em; }
  .cta-inner h2::before{ background:var(--accent); }
  .cta-inner p{ margin-top:12px; font-size:15px; color:rgba(247,245,239,.76); max-width:34rem; }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--primary);
    color:var(--paper);
    border-top:1px solid rgba(247,245,239,.14);
    padding-top:64px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
    padding-bottom:44px;
  }
  .footer-brand .brand-main{ font-size:20px; font-weight:800; display:block; }
  .footer-brand .brand-sub{ font-size:11px; letter-spacing:.26em; color:rgba(247,245,239,.6); display:block; margin-top:6px; }
  .footer-brand p{
    margin-top:18px;
    font-size:14px;
    line-height:1.8;
    color:rgba(247,245,239,.72);
    max-width:24rem;
  }
  .footer-col h4{
    font-size:13px;
    font-weight:700;
    letter-spacing:.14em;
    color:rgba(247,245,239,.55);
    margin-bottom:16px;
  }
  .footer-col ul{ display:grid; gap:11px; }
  .footer-col a{
    font-size:14.5px;
    color:rgba(247,245,239,.86);
    transition:color .18s var(--ease), padding-left .2s var(--ease);
  }
  .footer-col a:hover{ color:var(--accent); padding-left:4px; }
  .footer-dl{
    border:1px solid rgba(247,245,239,.22);
    border-radius:var(--r-card);
    padding:20px;
  }
  .footer-dl .mono{ font-size:1.4rem; font-weight:800; color:var(--accent); display:block; line-height:1.2; }
  .footer-dl span.small{ font-size:12.5px; color:rgba(247,245,239,.6); }
  .footer-dl .btn{ margin-top:16px; }
  .footer-bottom{
    border-top:1px solid rgba(247,245,239,.14);
    padding:22px 0 30px;
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    align-items:center;
    justify-content:space-between;
    font-size:12.5px;
    color:rgba(247,245,239,.52);
    letter-spacing:.02em;
  }
  @media (min-width:768px){
    .footer-grid{ grid-template-columns:1.4fr .8fr .8fr 1fr; gap:32px; }
  }

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:80;
    background:var(--paper);
    padding:20px 20px 28px;
    display:none;
    flex-direction:column;
    overflow-y:auto;
  }
  .drawer.is-open{ display:flex; }
  .drawer-head{ display:flex; align-items:flex-start; justify-content:space-between; padding-bottom:20px; border-bottom:1px solid var(--line); }
  .drawer-head .brand-main{ font-size:19px; font-weight:800; display:block; }
  .drawer-head .brand-sub{ font-size:11px; letter-spacing:.26em; color:var(--ink-3); display:block; margin-top:5px; }
  .drawer-close{
    width:44px; height:44px;
    display:inline-flex; align-items:center; justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:var(--r-btn);
    font-size:16px;
  }
  .drawer-nav{ display:grid; gap:2px; margin-top:20px; }
  .drawer-nav a{
    font-size:20px;
    font-weight:700;
    padding:16px 4px;
    border-bottom:1px solid var(--line);
    opacity:0;
    transform:translateY(10px);
    animation:drawerIn .3s var(--ease) forwards;
  }
  .drawer-nav a:nth-child(1){ animation-delay:.04s; }
  .drawer-nav a:nth-child(2){ animation-delay:.08s; }
  .drawer-nav a:nth-child(3){ animation-delay:.12s; }
  .drawer-nav a:nth-child(4){ animation-delay:.16s; }
  .drawer-nav a:nth-child(5){ animation-delay:.2s; }
  .drawer-nav a:nth-child(6){ animation-delay:.24s; }
  @keyframes drawerIn{ to{ opacity:1; transform:translateY(0); } }
  .drawer-cta{ margin-top:auto; width:100%; }
  body.drawer-open{ overflow:hidden; }

  @media (max-width:1023px){
    .nav-left{ display:none; }
    .nav-right{ flex:0 0 auto; gap:0; }
    .nav-right .nav-link{ display:none; }
    .nav-right .btn{ display:none; }
    .nav-toggle{ display:inline-flex; }
    .brand{ padding:0; border-left:none; border-right:none; align-items:flex-start; }
    .nav-wrap{ height:64px; }
  }
  @media (max-width:767px){
    .hero-actions .btn{ width:100%; }
    .hero-card{ position:static; transform:none; margin-top:18px; box-shadow:0 4px 0 var(--primary); }
    .hero-figure{ aspect-ratio:16/12; }
    .cta-inner .btn{ width:100%; }
    .footer-dl .btn{ width:100%; }
    .section-head{ margin-bottom:28px; }
  }
  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{
      animation-duration:.01ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.01ms !important;
      scroll-behavior:auto !important;
    }
  }

/* roulang page: article */
:root{
  --ink:#12140F;
  --ink-2:#3B4038;
  --ink-3:#6E736A;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --surface-2:#EFF1E7;
  --primary:#0F2A22;
  --primary-hover:#174034;
  --accent:#C8F14B;
  --accent-2:#FF6B35;
  --line:#E2DED2;
  --line-strong:#C9C3B2;
  --success:#2E7D46;
  --warning:#B4432A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-hero:20px;
  --shadow-hard:0 4px 0 var(--primary);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1024px){.container{padding-left:48px;padding-right:48px;}}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,239,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease), background-color .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,245,239,.94);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
}
.nav-left{
  display:flex;
  align-items:center;
  gap:26px;
  justify-self:start;
}
.nav-right{
  display:flex;
  align-items:center;
  gap:18px;
  justify-self:end;
}
.nav-right-links{display:flex;align-items:center;gap:20px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--accent);
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{width:100%;}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:0 22px;
  line-height:1.1;
}
.brand-main{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
}
.brand-sub{
  margin-top:3px;
  font-size:11px;
  letter-spacing:.24em;
  color:var(--ink-3);
  text-indent:.24em;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
  transition:transform .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.nav-toggle:hover{transform:translateY(-2px);border-color:var(--primary);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:var(--paper);}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-hard);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);}
.btn-secondary:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;}
.btn-arrow{width:16px;height:16px;flex:none;}

/* ---------- mobile drawer ---------- */
.mobile-menu{
  position:fixed;
  inset:0;
  z-index:70;
  display:flex;
  flex-direction:column;
  padding:84px 24px 32px;
  background:var(--paper);
  visibility:hidden;
  opacity:0;
  transform:translateY(-8px);
  pointer-events:none;
  transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  overflow-y:auto;
}
.mobile-menu.is-open{visibility:visible;opacity:1;transform:none;pointer-events:auto;}
.mm-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:12px;
}
.mm-title{font-size:13px;letter-spacing:.16em;color:var(--ink-3);}
.mm-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
}
.mm-close svg{width:18px;height:18px;}
.mm-link{
  display:block;
  padding:16px 0;
  font-size:20px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  opacity:0;
  transform:translateY(10px);
  transition:opacity .22s var(--ease), transform .22s var(--ease), color .2s var(--ease);
}
.mobile-menu.is-open .mm-link{opacity:1;transform:none;}
.mm-link:nth-child(2){transition-delay:.04s;}
.mm-link:nth-child(3){transition-delay:.08s;}
.mm-link:nth-child(4){transition-delay:.12s;}
.mm-link:nth-child(5){transition-delay:.16s;}
.mm-link:nth-child(6){transition-delay:.20s;}
.mm-link:nth-child(7){transition-delay:.24s;}
.mm-link:hover{color:var(--primary);}
.mm-cta{margin-top:auto;padding-top:28px;}
.mm-cta .btn{width:100%;}

/* ---------- breadcrumb & article head ---------- */
.article-top{
  position:relative;
  padding:28px 0 0;
  background-image:
    linear-gradient(rgba(18,20,15,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,20,15,.035) 1px, transparent 1px);
  background-size:64px 64px;
  background-position:center top;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  white-space:nowrap;
  overflow:hidden;
}
.crumbs a{
  color:var(--ink-3);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.crumbs a:hover{color:var(--ink);border-bottom-color:var(--accent);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{
  overflow:hidden;
  text-overflow:ellipsis;
  color:var(--ink-2);
  min-width:0;
}
.article-head{padding:26px 0 0;max-width:56rem;}
.kicker{
  display:inline-block;
  padding:5px 13px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--primary);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
}
.article-title{
  margin-top:18px;
  font-size:clamp(1.8rem,4vw,2.9rem);
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--ink);
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 16px;
  margin-top:22px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block;}
.meta-badge{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
}
.cover-wrap{
  margin-top:28px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--surface);
}
.cover-wrap img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  object-position:center 40%;
  transition:transform .24s var(--ease);
}
.cover-wrap:hover img{transform:scale(1.03);}

/* ---------- article body ---------- */
.article-layout{padding:44px 0 0;}
.article-shell{max-width:46rem;margin:0 auto;}
.article-body{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  overflow-wrap:break-word;
}
.article-body > * + *{margin-top:1.1em;}
.article-body p{margin:0;font-size:17px;line-height:1.85;}
.article-body h2{
  margin:2.2em 0 0;
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  line-height:1.3;
  letter-spacing:-.01em;
  font-weight:800;
  color:var(--ink);
}
.article-body h2::before{
  content:"";
  display:block;
  width:20px;
  height:4px;
  margin-bottom:12px;
  background:var(--accent);
  border-radius:1px;
}
.article-body h3{
  margin-top:1.9em;
  font-size:1.15rem;
  font-weight:600;
  color:var(--ink);
}
.article-body h4{
  margin-top:1.7em;
  font-size:1.02rem;
  font-weight:600;
  color:var(--ink);
}
.article-body a{
  color:var(--primary);
  border-bottom:1px solid var(--accent);
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.article-body a:hover{color:var(--primary-hover);border-bottom-color:var(--primary);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body ul,
.article-body ol{margin:1.1em 0 0;padding-left:0;}
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-top:.55em;
  list-style:none;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  background:var(--accent);
  border:1px solid var(--primary);
  border-radius:1px;
}
.article-body ol{list-style:none;counter-reset:art-counter;}
.article-body ol li{
  position:relative;
  counter-increment:art-counter;
  padding-left:34px;
  margin-top:.55em;
}
.article-body ol li::before{
  content:counter(art-counter, decimal-leading-zero);
  position:absolute;
  left:0;
  top:.1em;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--primary);
  font-weight:700;
}
.article-body blockquote{
  margin:1.6em 0 0;
  padding:20px 22px;
  border-left:3px solid var(--primary);
  background:var(--surface-2);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  font-size:20px;
  line-height:1.7;
  font-style:normal;
  color:var(--ink);
}
.article-body blockquote p{font-size:20px;}
.article-body figure{margin:1.6em 0 0;}
.article-body figure img{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  width:100%;
}
.article-body figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--ink-3);
  text-align:center;
}
.article-body img{border-radius:var(--radius-card);}
.article-body table{
  width:100%;
  margin-top:1.4em;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.7;
  background:var(--surface);
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{
  background:var(--surface-2);
  color:var(--ink);
  font-weight:600;
}
.article-body pre{
  margin-top:1.4em;
  padding:16px 18px;
  background:#F1EFE6;
  border:1px solid var(--line);
  border-radius:10px;
  overflow-x:auto;
  font-family:var(--font-mono);
  font-size:14px;
  line-height:1.7;
  color:var(--ink);
}
.article-body code{
  font-family:var(--font-mono);
  font-size:.92em;
  background:rgba(18,20,15,.06);
  padding:2px 6px;
  border-radius:6px;
  color:var(--ink);
}
.article-body pre code{background:none;padding:0;border-radius:0;}
.article-body hr{
  margin:2em 0;
  border:0;
  border-top:1px solid var(--line);
}
.article-body table,
.article-body pre{max-width:100%;}

.empty-state{
  margin-top:32px;
  padding:56px 24px;
  text-align:center;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);
  background:var(--surface);
}
.empty-state p{font-size:17px;color:var(--ink-3);}
.empty-state .btn{margin-top:20px;}

/* ---------- article foot ---------- */
.article-foot{
  max-width:46rem;
  margin:48px auto 0;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-label{font-size:13px;color:var(--ink-3);margin-right:2px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 13px;
  font-size:13px;
  color:var(--ink-2);
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:999px;
  transition:transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}
.tag:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary);background:var(--surface-2);}

.next-block{
  max-width:46rem;
  margin:44px auto 0;
}
.block-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:8px;
}
.block-title{
  font-size:clamp(1.3rem,2.2vw,1.6rem);
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
  line-height:1.3;
}
.block-title::before{
  content:"";
  display:block;
  width:20px;
  height:4px;
  margin-bottom:10px;
  background:var(--accent);
  border-radius:1px;
}
.next-list{border-top:1px solid var(--line);margin-top:12px;}
.next-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  transition:transform .2s var(--ease), background-color .2s var(--ease);
}
.next-item:hover{transform:translateY(-2px);background:rgba(239,241,231,.55);}
.next-main{min-width:0;}
.next-title{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.01em;
  line-height:1.5;
}
.next-desc{
  margin-top:4px;
  font-size:13px;
  color:var(--ink-3);
  line-height:1.6;
}
.next-arrow{
  flex:none;
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:50%;
  color:var(--primary);
  background:var(--surface);
  transition:background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.next-item:hover .next-arrow{background:var(--primary);border-color:var(--primary);color:var(--accent);}
.next-arrow svg{width:16px;height:16px;}

.back-row{max-width:46rem;margin:28px auto 0;}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  padding:6px 0;
  border-bottom:2px solid transparent;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.back-link:hover{border-bottom-color:var(--accent);color:var(--primary);}
.back-link svg{width:16px;height:16px;}

/* ---------- CTA band ---------- */
.cta-band-wrap{padding:72px 0 0;}
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:24px;
  padding:36px 32px;
  background:var(--primary);
  color:var(--paper);
  border-radius:var(--radius-hero);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg, rgba(247,245,239,.06) 0 1px, transparent 1px 16px);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-title{
  font-size:clamp(1.3rem,2.4vw,1.8rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.3;
  color:var(--paper);
}
.cta-sub{
  margin-top:8px;
  font-size:14px;
  color:rgba(247,245,239,.76);
}
.cta-band .btn-accent{
  background:var(--accent);
  color:var(--ink);
  border-color:var(--accent);
}
.cta-band .btn-accent:hover{
  background:var(--paper);
  color:var(--primary);
  border-color:var(--paper);
  transform:translateY(-2px);
  box-shadow:0 4px 0 rgba(0,0,0,.28);
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  background:var(--primary);
  color:var(--paper);
  padding-top:60px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:48px;
  border-top:1px solid rgba(247,245,239,.14);
  padding-top:48px;
}
.footer-brand-main{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--paper);
}
.footer-brand-sub{
  margin-top:4px;
  font-size:11px;
  letter-spacing:.24em;
  color:rgba(247,245,239,.6);
}
.footer-claim{
  margin-top:14px;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,245,239,.74);
  max-width:22rem;
}
.footer-col-title{
  font-size:13px;
  letter-spacing:.14em;
  color:rgba(247,245,239,.55);
  margin-bottom:14px;
}
.footer-links li + li{margin-top:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(247,245,239,.82);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.footer-links a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.footer-meta{
  font-size:14px;
  color:rgba(247,245,239,.78);
  line-height:1.9;
}
.footer-meta .mono{color:var(--accent);}
.footer-cta{margin-top:16px;}
.footer-cta .btn{
  background:var(--accent);
  color:var(--ink);
  border-color:var(--accent);
}
.footer-cta .btn:hover{background:var(--paper);color:var(--primary);border-color:var(--paper);}
.footer-bottom{
  border-top:1px solid rgba(247,245,239,.14);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:rgba(247,245,239,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-left,
  .nav-right-links,
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:64px;
  }
  .brand{align-items:flex-start;text-align:left;padding:0;}
  .article-layout{padding-top:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .article-top{padding-top:20px;}
  .article-title{font-size:clamp(1.6rem,6vw,2.2rem);}
  .article-body,
  .article-body p{font-size:16px;line-height:1.9;}
  .article-body blockquote,
  .article-body blockquote p{font-size:18px;}
  .article-body table{font-size:14px;}
  .cover-wrap img{aspect-ratio:4/3;}
  .cta-band{padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .next-item{gap:12px;}
  .site-footer{margin-top:64px;padding-top:44px;}
  .cta-band-wrap{padding-top:56px;}
}
@media (max-width:519px){
  .crumbs{font-size:12px;}
  .meta-row{font-size:12px;gap:10px;}
  .article-foot{margin-top:36px;}
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,
  .next-item:hover,
  .tag:hover,
  .nav-toggle:hover{transform:none !important;}
  .cover-wrap:hover img{transform:none !important;}
}

/* roulang page: category1 */
:root{
    --ink:#12140F;
    --ink-2:#3B4038;
    --ink-3:#6E736A;
    --paper:#F7F5EF;
    --surface:#FFFFFF;
    --surface-2:#EFF1E7;
    --primary:#0F2A22;
    --primary-hover:#174034;
    --accent:#C8F14B;
    --accent-2:#FF6B35;
    --line:#E2DED2;
    --line-strong:#C9C3B2;
    --success:#2E7D46;
    --warning:#B4432A;
    --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",monospace;
    --r-card:14px;
    --r-btn:10px;
    --r-hero:20px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--accent-2);outline-offset:2px;border-radius:4px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
  @media (min-width:1280px){.container{padding-left:48px;padding-right:48px;}}

  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section{padding-top:72px;padding-bottom:72px;}}
  @media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}

  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,239,.98);
    border-bottom:1px solid transparent;
    transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .site-header.scrolled{
    background:rgba(247,245,239,.86);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    height:72px;
  }
  @media (min-width:1024px){
    .nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;}
  }
  .nav-left,.nav-right{display:none;}
  @media (min-width:1024px){
    .nav-left{display:flex;align-items:center;gap:26px;}
    .nav-right{display:flex;align-items:center;justify-content:flex-end;gap:24px;}
  }
  .nav-link{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    padding:6px 0;
    transition:color .2s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:2px;
    background:var(--accent);
    transition:width .22s var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{width:100%;}
  .nav-link.is-active{color:var(--ink);font-weight:700;}
  .nav-link.is-active::after{width:100%;}

  .brand{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    line-height:1;
    gap:4px;
    padding:4px 8px;
  }
  .brand-main{
    font-size:19px;
    font-weight:800;
    letter-spacing:-.02em;
    color:var(--ink);
  }
  .brand-sub{
    font-size:11px;
    letter-spacing:.28em;
    color:var(--ink-3);
    text-indent:.28em;
  }
  @media (max-width:1023px){
    .brand{align-items:flex-start;}
    .brand-sub{letter-spacing:.2em;text-indent:.2em;}
  }

  .nav-cta{min-height:40px;padding:9px 18px;font-size:14px;}
  @media (max-width:1023px){.nav-cta{display:none;}}

  .nav-toggle{
    display:inline-flex;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:44px;
    height:44px;
    padding:0 10px;
    border:1px solid var(--line-strong);
    border-radius:10px;
    background:var(--surface);
  }
  .nav-toggle span{
    display:block;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  @media (min-width:1024px){.nav-toggle{display:none;}}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:70;
    display:none;
    flex-direction:column;
    padding:88px 24px 32px;
    background:var(--paper);
    overflow-y:auto;
  }
  .drawer.open{display:flex;}
  .drawer-link{
    display:block;
    padding:16px 0;
    font-size:20px;
    font-weight:700;
    letter-spacing:-.01em;
    color:var(--ink);
    border-bottom:1px solid var(--line);
    opacity:0;
    transform:translateY(14px);
  }
  .drawer.open .drawer-link,
  .drawer.open .drawer-cta{
    animation:drawerIn .3s var(--ease) forwards;
  }
  .drawer-link:nth-child(1){animation-delay:.02s;}
  .drawer-link:nth-child(2){animation-delay:.06s;}
  .drawer-link:nth-child(3){animation-delay:.10s;}
  .drawer-link:nth-child(4){animation-delay:.14s;}
  .drawer-link:nth-child(5){animation-delay:.18s;}
  .drawer-link:nth-child(6){animation-delay:.22s;}
  .drawer-cta{margin-top:28px;opacity:0;transform:translateY(14px);animation-delay:.26s;}
  .drawer.open .drawer-cta{animation:drawerIn .3s var(--ease) forwards;}
  .drawer-close{
    position:absolute;
    top:16px;
    right:20px;
    width:44px;
    height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:10px;
    font-size:20px;
    line-height:1;
    background:var(--surface);
  }
  @keyframes drawerIn{
    to{opacity:1;transform:translateY(0);}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:12px 22px;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    letter-spacing:.02em;
    transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-primary{background:var(--primary);color:var(--paper);}
  .btn-primary:hover{
    background:var(--accent);
    color:var(--ink);
    transform:translateY(-2px);
    box-shadow:0 4px 0 var(--primary);
  }
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink);}
  .btn-secondary:hover{
    background:var(--ink);
    color:var(--paper);
    transform:translateY(-2px);
    box-shadow:0 4px 0 var(--accent);
  }
  .btn-secondary:active{transform:translateY(0);box-shadow:none;}
  .btn-accent{background:var(--accent);color:var(--primary);}
  .btn-accent:hover{
    background:var(--paper);
    color:var(--primary);
    transform:translateY(-2px);
    box-shadow:0 4px 0 rgba(247,245,239,.6);
  }
  .btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
  @media (max-width:767px){
    .btn{width:100%;}
    .btn-inline{width:auto;}
  }

  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .text-link:hover{border-color:var(--accent);color:var(--primary-hover);}
  .text-link .arrow{transition:transform .2s var(--ease);}
  .text-link:hover .arrow{transform:translateX(3px);}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 12px;
    border-radius:999px;
    border:1px solid var(--line-strong);
    font-size:13px;
    font-weight:600;
    letter-spacing:.04em;
    color:var(--primary);
    background:var(--surface-2);
  }
  .badge-data{
    border-color:rgba(255,107,53,.28);
    background:rgba(255,107,53,.08);
    color:var(--accent-2);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-3);
    letter-spacing:.02em;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .breadcrumb a{color:var(--ink-3);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--primary);border-bottom:1px solid var(--accent);}
  .breadcrumb .sep{color:var(--line-strong);}
  .breadcrumb .current{color:var(--ink-2);font-weight:600;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    padding-top:32px;
    padding-bottom:48px;
    border-bottom:1px solid var(--line);
  }
  @media (min-width:1024px){.hero{padding-top:44px;padding-bottom:72px;}}
  .hero-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    align-items:center;
  }
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:1.1fr .9fr;gap:56px;}
  }
  .hero-title{
    font-size:clamp(1.9rem,4.4vw,3.3rem);
    line-height:1.12;
    letter-spacing:-.02em;
    font-weight:800;
    margin-top:18px;
    max-width:20ch;
  }
  .hero-sub{
    margin-top:18px;
    font-size:17px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:46rem;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:28px;
  }
  @media (max-width:767px){
    .hero-actions{flex-direction:column;gap:12px;}
  }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    gap:18px;
    margin-top:24px;
    font-size:13px;
    color:var(--ink-3);
    letter-spacing:.04em;
  }
  .hero-meta span{display:inline-flex;align-items:center;gap:6px;}
  .hero-meta .dot{
    width:5px;height:5px;border-radius:999px;background:var(--accent-2);display:inline-block;
  }
  .hero-figure{
    position:relative;
    border-radius:var(--r-hero);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--surface-2);
  }
  .hero-figure img{
    width:100%;
    aspect-ratio:16/11;
    object-fit:cover;
    object-position:center 35%;
    transition:transform .24s var(--ease);
  }
  .hero-figure:hover img{transform:scale(1.03);}

  /* ---------- 步骤区 ---------- */
  .block-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:32px;
  }
  .h2{
    position:relative;
    font-size:clamp(1.5rem,2.6vw,2.2rem);
    line-height:1.24;
    letter-spacing:-.02em;
    font-weight:800;
    padding-left:20px;
  }
  .h2::before{
    content:"";
    position:absolute;
    left:0;
    top:.62em;
    width:5px;
    height:20px;
    border-radius:2px;
    background:var(--accent);
  }
  .h3{font-size:1.175rem;font-weight:700;letter-spacing:-.01em;line-height:1.5;}
  .lead{color:var(--ink-2);font-size:16px;line-height:1.85;max-width:46rem;}

  .step-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
  }
  @media (min-width:1024px){
    .step-grid{grid-template-columns:1.45fr .55fr;gap:48px;align-items:start;}
  }
  .steps{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
  }
  @media (min-width:768px){
    .steps{grid-template-columns:repeat(3,1fr);gap:24px;}
  }
  .step{
    position:relative;
    padding:24px 0 0;
    border-top:1px solid var(--line);
  }
  @media (min-width:768px){
    .step{padding-right:18px;}
    .step::after{
      content:"";
      position:absolute;
      top:-1px;
      left:0;
      width:42px;
      height:1px;
      background:var(--accent-2);
    }
  }
  .step-num{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    font-size:2.4rem;
    font-weight:700;
    line-height:1;
    color:var(--accent-2);
    letter-spacing:-.02em;
  }
  .step-title{
    margin-top:12px;
    font-size:1.05rem;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .step-text{
    margin-top:8px;
    font-size:15px;
    line-height:1.8;
    color:var(--ink-2);
  }

  .version-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:26px 24px;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .version-card:hover{
    transform:translateY(-2px);
    box-shadow:0 4px 0 var(--primary);
    border-color:var(--line-strong);
  }
  .version-card h3{
    font-size:14px;
    font-weight:700;
    letter-spacing:.06em;
    color:var(--ink-3);
    margin-bottom:16px;
  }
  .version-row{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:12px;
    padding:12px 0;
    border-top:1px solid var(--line);
  }
  .version-row:first-of-type{border-top:0;padding-top:0;}
  .version-key{font-size:14px;color:var(--ink-3);}
  .version-val{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    font-size:16px;
    font-weight:700;
    color:var(--ink);
    letter-spacing:.01em;
  }

  /* ---------- 表格 ---------- */
  .table-wrap{
    border:1px solid var(--line);
    border-radius:var(--r-card);
    background:var(--surface);
    overflow:hidden;
  }
  .table-scroll{overflow-x:auto;}
  table{width:100%;border-collapse:collapse;min-width:720px;}
  thead th{
    background:var(--surface-2);
    color:var(--ink-2);
    font-size:13px;
    font-weight:700;
    letter-spacing:.06em;
    text-align:left;
    padding:14px 18px;
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  tbody td{
    padding:16px 18px;
    font-size:15px;
    line-height:1.7;
    color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  tbody tr:last-child td{border-bottom:0;}
  tbody tr:hover{background:rgba(239,241,231,.5);}
  tbody td:first-child{
    color:var(--ink);
    font-weight:600;
    white-space:nowrap;
  }
  td .num{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    color:var(--accent-2);
    font-weight:700;
  }

  /* ---------- 列表 ---------- */
  .square-list li{
    position:relative;
    padding-left:22px;
    margin-top:14px;
    font-size:15.5px;
    line-height:1.8;
    color:var(--ink-2);
  }
  .square-list li:first-child{margin-top:0;}
  .square-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:.72em;
    width:6px;
    height:6px;
    background:var(--accent);
    border:1px solid var(--primary);
    border-radius:1px;
  }
  .square-list li strong{color:var(--ink);font-weight:700;}

  .note-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
    margin-top:28px;
  }
  @media (min-width:768px){.note-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
  .note-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .note-card:hover{transform:translateY(-2px);box-shadow:0 3px 0 var(--accent);}
  .note-card .note-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-family:var(--font-mono);
    font-size:13px;
    font-weight:700;
    color:var(--accent-2);
    letter-spacing:.08em;
  }
  .note-card p{
    margin-top:10px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
  }

  /* ---------- 检查清单 ---------- */
  .check-panel{
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:28px 24px;
  }
  @media (min-width:768px){.check-panel{padding:36px 32px;}}
  .check-list{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
    margin-top:24px;
  }
  @media (min-width:768px){.check-list{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .check-item{
    padding-top:18px;
    border-top:1px solid var(--line-strong);
  }
  .check-item .idx{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    font-size:13px;
    font-weight:700;
    letter-spacing:.1em;
    color:var(--primary);
  }
  .check-item h3{margin-top:8px;font-size:1rem;font-weight:700;}
  .check-item p{margin-top:6px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:46rem;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-of-type{border-top:1px solid var(--line);}
  .faq-item summary{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:16px;
    padding:20px 0;
    font-size:16.5px;
    font-weight:600;
    line-height:1.6;
    cursor:pointer;
    list-style:none;
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--primary-hover);}
  .faq-icon{
    flex:none;
    width:22px;
    height:22px;
    margin-top:2px;
    position:relative;
    transition:transform .2s var(--ease);
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--primary);
    border-radius:2px;
  }
  .faq-icon::before{left:50%;top:2px;width:2px;height:18px;transform:translateX(-50%);}
  .faq-icon::after{top:50%;left:2px;height:2px;width:18px;transform:translateY(-50%);}
  .faq-item[open] .faq-icon{transform:rotate(45deg);}
  .faq-body{
    padding:0 0 22px 16px;
    border-left:3px solid var(--accent);
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
  }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    background:var(--primary);
    color:var(--paper);
    padding:56px 0;
  }
  @media (min-width:1024px){.cta-band{padding:64px 0;}}
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:flex;
    flex-direction:column;
    gap:24px;
    align-items:flex-start;
  }
  @media (min-width:1024px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px;}
  }
  .cta-inner h2{
    font-size:clamp(1.5rem,2.6vw,2.1rem);
    line-height:1.24;
    letter-spacing:-.02em;
    font-weight:800;
    color:var(--paper);
  }
  .cta-inner p{
    margin-top:10px;
    font-size:15.5px;
    line-height:1.8;
    color:rgba(247,245,239,.78);
    max-width:34rem;
  }

  /* ---------- 相关链接 ---------- */
  .rel-list{
    border-top:1px solid var(--line);
  }
  .rel-list li{border-bottom:1px solid var(--line);}
  .rel-list a{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:8px 24px;
    padding:22px 0;
    transition:background-color .2s var(--ease),padding-left .2s var(--ease);
  }
  .rel-list a:hover{background:rgba(239,241,231,.55);padding-left:12px;}
  .rel-name{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:1.05rem;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .rel-name .arrow{color:var(--accent-2);transition:transform .2s var(--ease);}
  .rel-list a:hover .rel-name .arrow{transform:translateX(4px);}
  .rel-desc{font-size:14.5px;color:var(--ink-3);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--primary);
    color:var(--paper);
    padding:56px 0 0;
  }
  .footer-top{border-top:1px solid rgba(247,245,239,.16);padding-top:44px;}
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
  }
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}}
  .footer-brand-name{
    display:flex;
    flex-direction:column;
    gap:5px;
    line-height:1;
  }
  .footer-brand-name .main{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--paper);}
  .footer-brand-name .sub{font-size:11px;letter-spacing:.28em;color:rgba(247,245,239,.55);text-indent:.28em;}
  .footer-brand p{
    margin-top:18px;
    font-size:14.5px;
    line-height:1.85;
    color:rgba(247,245,239,.7);
    max-width:24rem;
  }
  .footer-col h4{
    font-size:13px;
    letter-spacing:.1em;
    font-weight:700;
    color:rgba(247,245,239,.55);
    margin-bottom:16px;
  }
  .footer-col li{margin-bottom:12px;}
  .footer-col a{
    font-size:14.5px;
    color:rgba(247,245,239,.86);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .footer-col a:hover{color:var(--accent);border-color:var(--accent);}
  .footer-cta{
    margin-top:20px;
    display:inline-flex;
  }
  .footer-contact{
    margin-top:18px;
    font-size:13.5px;
    line-height:1.9;
    color:rgba(247,245,239,.65);
  }
  .footer-bottom{
    margin-top:44px;
    border-top:1px solid rgba(247,245,239,.16);
    padding:20px 0 26px;
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    align-items:center;
    justify-content:space-between;
    font-size:12.5px;
    letter-spacing:.02em;
    color:rgba(247,245,239,.55);
  }
  .footer-bottom a{color:rgba(247,245,239,.7);}
  .footer-bottom a:hover{color:var(--accent);}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.01ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.01ms !important;
      scroll-behavior:auto !important;
    }
    .hero-figure:hover img{transform:none;}
  }

/* roulang page: category2 */
:root{
    --ink:#12140F;
    --ink-2:#3B4038;
    --ink-3:#6E736A;
    --paper:#F7F5EF;
    --surface:#FFFFFF;
    --surface-2:#EFF1E7;
    --primary:#0F2A22;
    --primary-hover:#174034;
    --accent:#C8F14B;
    --accent-2:#FF6B35;
    --line:#E2DED2;
    --line-strong:#C9C3B2;
    --ok:#2E7D46;
    --warn:#B4432A;
    --radius-card:14px;
    --radius-hero:20px;
    --radius-btn:10px;
    --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",ui-monospace,monospace;
    --ease:cubic-bezier(.2,.7,.3,1);
    --shadow-hard:0 4px 0 var(--primary);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.85;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.no-scroll{overflow:hidden}
  h1,h2,h3,h4,p,ul,ol,figure,dl,dd{margin:0}
  ul,ol{padding:0;list-style:none}
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}
  :focus-visible{outline:2px solid var(--accent-2);outline-offset:2px;border-radius:4px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1.2;
    padding:13px 24px;border-radius:var(--radius-btn);
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn svg{flex:none}
  .btn-primary{background:var(--primary);color:#F7F5EF;border-color:var(--primary)}
  .btn-primary:hover{background:var(--accent);color:var(--ink);border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-hard)}
  .btn-primary:active{transform:translateY(0);box-shadow:none}
  .btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
  .btn-secondary:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);box-shadow:0 4px 0 var(--accent)}
  .btn-sm{padding:10px 18px;font-size:14px}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);
    border-bottom:1px solid transparent;transition:gap .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  }
  .link-arrow:hover{gap:10px;border-bottom-color:var(--accent);color:var(--primary-hover)}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;font-weight:600;line-height:1;
    padding:7px 13px;border-radius:999px;
    background:var(--surface-2);color:var(--primary);border:1px solid rgba(15,42,34,.14);
  }
  .badge-data{background:rgba(255,107,53,.09);color:#B4432A;border-color:rgba(255,107,53,.24)}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,245,239,.86);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .site-header.is-scrolled{border-bottom-color:var(--line-strong);box-shadow:0 1px 0 rgba(15,42,34,.06)}
  .header-inner{
    max-width:1200px;margin:0 auto;padding:0 20px;height:72px;
    display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  }
  .nav-left{display:flex;align-items:center;gap:26px}
  .nav-right{display:flex;align-items:center;justify-content:flex-end;gap:20px}
  .nav-right-links{display:flex;align-items:center;gap:22px}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
    padding:8px 0;transition:color .18s var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
    background:var(--accent);transition:width .22s var(--ease);
  }
  .nav-link:hover{color:var(--ink)}
  .nav-link:hover::after{width:100%}
  .nav-link.is-active{color:var(--ink);font-weight:700}
  .nav-link.is-active::after{width:100%}
  .brand{
    position:relative;display:flex;flex-direction:column;align-items:center;
    padding:0 26px;color:var(--ink);line-height:1;
  }
  .brand::before,.brand::after{
    content:"";position:absolute;top:50%;transform:translateY(-50%);
    width:1px;height:26px;background:var(--line-strong);
  }
  .brand::before{left:0}
  .brand::after{right:0}
  .brand-main{font-size:19px;font-weight:800;letter-spacing:-.02em}
  .brand-sub{font-size:11px;letter-spacing:.3em;color:var(--ink-3);margin-top:6px;padding-left:.3em}
  .menu-toggle{
    display:none;width:44px;height:44px;align-items:center;justify-content:center;
    border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);
    transition:background-color .18s var(--ease),border-color .18s var(--ease);
  }
  .menu-toggle:hover{background:var(--surface-2);border-color:var(--primary)}
  .menu-toggle span{
    display:block;width:18px;height:2px;background:var(--ink);position:relative;
    transition:transform .2s var(--ease),background-color .2s var(--ease);
  }
  .menu-toggle span::before,.menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
    transition:transform .2s var(--ease),top .2s var(--ease);
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}
  .menu-toggle[aria-expanded="true"] span{background:transparent}
  .menu-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

  /* 移动抽屉 */
  .mobile-drawer{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
    background:var(--paper);padding:24px 20px 120px;
    overflow-y:auto;visibility:hidden;opacity:0;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .mobile-drawer.is-open{visibility:visible;opacity:1;transform:none}
  .drawer-label{font-size:12px;letter-spacing:.2em;color:var(--ink-3);margin-bottom:12px}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    font-size:20px;font-weight:700;padding:16px 0;
    border-bottom:1px solid var(--line);opacity:0;transform:translateY(12px);
  }
  .drawer-link small{font-family:var(--font-mono);font-size:12px;color:var(--ink-3);font-weight:500}
  .mobile-drawer.is-open .drawer-link{animation:rise .3s var(--ease) forwards}
  .mobile-drawer.is-open .drawer-link:nth-child(2){animation-delay:.04s}
  .mobile-drawer.is-open .drawer-link:nth-child(3){animation-delay:.08s}
  .mobile-drawer.is-open .drawer-link:nth-child(4){animation-delay:.12s}
  .mobile-drawer.is-open .drawer-link:nth-child(5){animation-delay:.16s}
  .mobile-drawer.is-open .drawer-link:nth-child(6){animation-delay:.2s}
  @keyframes rise{to{opacity:1;transform:none}}
  .drawer-cta{position:sticky;bottom:0;padding-top:24px;background:linear-gradient(to top,var(--paper) 60%,rgba(247,245,239,0))}
  .drawer-cta .btn{width:100%}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;padding:56px 0 72px;border-bottom:1px solid var(--line);overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.045;
    background-image:linear-gradient(to right,var(--ink) 1px,transparent 1px),linear-gradient(to bottom,var(--ink) 1px,transparent 1px);
    background-size:64px 64px;
  }
  .hero-grid{
    position:relative;display:grid;grid-template-columns:1.12fr .88fr;
    gap:56px;align-items:center;
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px}
  .breadcrumb a{transition:color .18s var(--ease);border-bottom:1px solid transparent}
  .breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--accent)}
  .breadcrumb .sep{color:var(--line-strong)}
  .breadcrumb .current{color:var(--ink-2)}
  h1{
    font-size:clamp(2.1rem,5vw,4.1rem);line-height:1.1;letter-spacing:-.02em;
    font-weight:800;margin:18px 0 20px;max-width:18em;
  }
  .hero-sub{font-size:17px;color:var(--ink-2);max-width:34em;line-height:1.85}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-meta{
    display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;
    padding-top:20px;border-top:1px solid var(--line);
    font-family:var(--font-mono);font-size:13px;color:var(--ink-3);
  }
  .hero-meta b{color:var(--ink);font-weight:700}
  .hero-figure{position:relative}
  .hero-figure img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--radius-hero);border:1px solid var(--line);
    transition:transform .24s var(--ease);
  }
  .hero-figure:hover img{transform:scale(1.01)}
  .hero-tag{
    position:absolute;left:-10px;bottom:22px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:14px 18px;box-shadow:var(--shadow-hard);transform:rotate(-2deg);
  }
  .hero-tag .mono{font-size:20px;font-weight:700;color:var(--primary)}
  .hero-tag small{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;letter-spacing:.02em}

  /* ---------- 指标条 ---------- */
  .stat-bar{border-bottom:1px solid var(--line);background:var(--surface)}
  .stat-grid{
    display:grid;grid-template-columns:repeat(4,1fr);
    gap:0;
  }
  .stat-cell{
    padding:30px 26px;border-right:1px solid var(--line);
  }
  .stat-cell:last-child{border-right:none}
  .stat-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--accent-2);line-height:1}
  .stat-label{font-size:14px;color:var(--ink-2);margin-top:10px}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0}
  .section-tight{padding:72px 0}
  .section-head{margin-bottom:40px;max-width:46rem}
  .section-head h2{
    font-size:clamp(1.5rem,2.6vw,2.2rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;
  }
  .section-head h2::before{
    content:"";display:block;width:20px;height:4px;background:var(--accent);
    margin-bottom:16px;border-radius:2px;
  }
  .section-head p{color:var(--ink-2);margin-top:14px;font-size:16px}

  /* ---------- 锚点档案布局 ---------- */
  .feature-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:56px;align-items:start}
  .anchor-index{position:sticky;top:96px}
  .anchor-title{
    font-size:12px;letter-spacing:.2em;color:var(--ink-3);
    padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px;
  }
  .anchor-link{
    display:flex;align-items:baseline;gap:10px;
    padding:12px 0 12px 14px;border-left:2px solid var(--line);
    font-size:14.5px;color:var(--ink-3);
    transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
  }
  .anchor-link .mono{font-size:12px;color:var(--line-strong);transition:color .18s var(--ease)}
  .anchor-link:hover{color:var(--ink);border-left-color:var(--line-strong)}
  .anchor-link.is-active{color:var(--ink);font-weight:700;border-left-color:var(--accent);padding-left:18px}
  .anchor-link.is-active .mono{color:var(--accent-2)}
  .anchor-note{
    margin-top:24px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--surface);font-size:13px;line-height:1.75;color:var(--ink-3);
  }

  .feature-item{
    display:grid;grid-template-columns:72px minmax(0,1fr);gap:24px;
    padding:40px 0;border-bottom:1px solid var(--line);scroll-margin-top:96px;
  }
  .feature-item:first-child{padding-top:4px}
  .feature-num{font-family:var(--font-mono);font-size:34px;font-weight:700;line-height:1;color:var(--accent-2)}
  .feature-body{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
  .feature-body.has-media{grid-template-columns:minmax(0,1fr) 232px;gap:32px;align-items:start}
  .feature-item h3{font-size:1.3rem;font-weight:700;letter-spacing:-.01em;line-height:1.35}
  .feature-item p{color:var(--ink-2);font-size:15.8px;line-height:1.85}
  .feature-meta{
    display:flex;flex-wrap:wrap;gap:8px 22px;
    font-family:var(--font-mono);font-size:12.5px;color:var(--ink-3);
    padding-top:4px;
  }
  .feature-meta span{display:inline-flex;align-items:center;gap:6px}
  .feature-meta span::before{content:"";width:5px;height:5px;background:var(--accent);display:inline-block}
  .feature-media img{
    width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);
    border:1px solid var(--line);transition:transform .24s var(--ease);
  }
  .feature-media:hover img{transform:scale(1.03)}

  /* ---------- 联动图文 ---------- */
  .split{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}
  .split-figure img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:var(--radius-hero);border:1px solid var(--line);
  }
  .split-copy h2{font-size:clamp(1.5rem,2.6vw,2.2rem);line-height:1.2;font-weight:800;letter-spacing:-.02em}
  .split-copy>p{color:var(--ink-2);margin-top:16px;max-width:34em}
  .marker-list{margin-top:26px;display:grid;gap:14px}
  .marker-list li{
    position:relative;padding-left:20px;font-size:15.5px;color:var(--ink-2);line-height:1.8;
  }
  .marker-list li::before{
    content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;background:var(--accent);
  }
  .marker-list strong{color:var(--ink);font-weight:700}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{
    border-bottom:1px solid var(--line);
    border-left:3px solid transparent;
    padding-left:18px;
    transition:border-color .2s var(--ease),background-color .2s var(--ease);
  }
  .faq-item[open]{border-left-color:var(--accent);background:rgba(239,241,231,.4)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:22px 18px 22px 0;font-size:16.5px;font-weight:600;line-height:1.6;
    transition:color .18s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--primary-hover)}
  .faq-icon{
    flex:none;width:22px;height:22px;position:relative;
    transition:transform .22s var(--ease);
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ink-2);border-radius:2px;
  }
  .faq-icon::before{left:0;top:10px;width:22px;height:2px}
  .faq-icon::after{left:10px;top:0;width:2px;height:22px;transition:opacity .22s var(--ease)}
  .faq-item[open] .faq-icon{transform:rotate(45deg)}
  .faq-item[open] .faq-icon::after{opacity:0}
  .faq-answer{padding:0 18px 24px 0;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:46rem}
  .faq-aside{
    border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
    padding:26px;position:sticky;top:96px;
  }
  .faq-aside h3{font-size:1.05rem;font-weight:700}
  .faq-aside p{font-size:14px;color:var(--ink-2);margin-top:12px;line-height:1.8}
  .faq-aside .btn{width:100%;margin-top:20px}

  /* ---------- CTA 带 ---------- */
  .cta-band{position:relative;background:var(--primary);color:#F2F1E8;overflow:hidden}
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.09) 0 1px,transparent 1px 16px);
    opacity:.5;
  }
  .cta-inner{
    position:relative;display:flex;align-items:center;justify-content:space-between;
    gap:40px;padding:56px 0;flex-wrap:wrap;
  }
  .cta-inner h2{
    font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.25;font-weight:800;letter-spacing:-.02em;max-width:22em;
  }
  .cta-inner p{color:rgba(242,241,232,.76);font-size:15px;margin-top:12px;max-width:36em}
  .btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
  .btn-accent:hover{background:#F7F5EF;color:var(--ink);border-color:#F7F5EF;transform:translateY(-2px);box-shadow:0 4px 0 rgba(200,241,75,.5)}

  /* ---------- 相关链接 ---------- */
  .related{background:var(--surface-2);border-top:1px solid var(--line)}
  .related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(15,42,34,.12)}
  .related-link{
    display:flex;flex-direction:column;gap:8px;padding:26px 24px;
    border-right:1px solid rgba(15,42,34,.12);border-bottom:1px solid rgba(15,42,34,.12);
    transition:background-color .18s var(--ease),transform .18s var(--ease);
  }
  .related-link:last-child{border-right:none}
  .related-link:hover{background:var(--paper);transform:translateY(-2px)}
  .related-link span{font-family:var(--font-mono);font-size:12px;color:var(--ink-3)}
  .related-link strong{font-size:15.5px;font-weight:700}
  .related-link em{font-style:normal;font-size:13.5px;color:var(--ink-2);line-height:1.7}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--primary);color:#EDECE3;padding:64px 0 26px}
  .footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1fr;gap:44px;padding-bottom:44px}
  .footer-brand .brand-main{font-size:20px;font-weight:800;letter-spacing:-.02em;color:#F7F5EF}
  .footer-brand .brand-sub{font-size:11px;letter-spacing:.3em;color:rgba(237,236,227,.62);margin-top:8px;display:block}
  .footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(237,236,227,.72);max-width:24em}
  .footer-col h4{font-size:12px;letter-spacing:.2em;color:rgba(237,236,227,.55);font-weight:600;margin-bottom:16px}
  .footer-col a{
    display:block;font-size:14.5px;color:rgba(237,236,227,.86);padding:7px 0;
    border-bottom:1px solid transparent;width:fit-content;
    transition:color .18s var(--ease),border-color .18s var(--ease);
  }
  .footer-col a:hover{color:#fff;border-bottom-color:var(--accent)}
  .footer-cta p{font-size:14px;line-height:1.85;color:rgba(237,236,227,.72);margin-bottom:18px}
  .footer-cta .btn{width:100%}
  .footer-platforms{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
  .footer-platforms span{
    font-family:var(--font-mono);font-size:12px;color:rgba(237,236,227,.8);
    border:1px solid rgba(237,236,227,.24);border-radius:999px;padding:5px 12px;
  }
  .footer-bottom{
    border-top:1px solid rgba(237,236,227,.16);padding-top:22px;
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:rgba(237,236,227,.6);
  }

  /* ---------- 响应式 ---------- */
  @media (min-width:640px){
    .container{padding:0 32px}
    .header-inner{padding:0 32px}
  }
  @media (min-width:1024px){
    .container{padding:0 48px}
    .header-inner{padding:0 48px}
  }
  @media (max-width:1023px){
    .nav-left,.nav-right-links,.nav-right .btn{display:none}
    .header-inner{grid-template-columns:auto 1fr auto;display:flex;justify-content:space-between;gap:12px}
    .brand{align-items:flex-start;padding:0}
    .brand::before,.brand::after{display:none}
    .menu-toggle{display:inline-flex}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .hero-figure{order:2}
    .hero-tag{left:12px;bottom:12px}
    .feature-layout{grid-template-columns:1fr;gap:32px}
    .anchor-index{position:static;top:auto}
    .anchor-list{display:flex;gap:14px;overflow-x:auto;padding-bottom:10px;border-bottom:1px solid var(--line)}
    .anchor-link{
      flex:none;border-left:none;border-bottom:2px solid var(--line);
      padding:10px 2px;white-space:nowrap;
    }
    .anchor-link.is-active{border-left:none;border-bottom-color:var(--accent);padding-left:2px}
    .anchor-note{display:none}
    .split{grid-template-columns:1fr;gap:32px}
    .faq-wrap{grid-template-columns:1fr;gap:32px}
    .faq-aside{position:static}
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
    .section{padding:72px 0}
  }
  @media (max-width:767px){
    body{font-size:16px}
    .page-hero{padding:40px 0 56px}
    h1{font-size:clamp(1.9rem,8vw,2.6rem)}
    .stat-grid{grid-template-columns:repeat(2,1fr)}
    .stat-cell{padding:22px 20px;border-bottom:1px solid var(--line)}
    .stat-cell:nth-child(2n){border-right:none}
    .stat-cell:nth-last-child(-n+2){border-bottom:none}
    .feature-item{grid-template-columns:1fr;gap:14px;padding:32px 0}
    .feature-num{font-size:26px}
    .feature-body.has-media{grid-template-columns:1fr}
    .hero-actions .btn{width:100%}
    .section{padding:56px 0}
    .cta-inner{padding:48px 0;gap:24px}
    .cta-inner .btn{width:100%}
    .related-grid{grid-template-columns:1fr}
    .related-link{border-right:none}
    .footer-grid{grid-template-columns:1fr;gap:32px}
    .footer-bottom{flex-direction:column}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
    }
  }

/* roulang page: category3 */
:root{
    --ink:#12140F;
    --ink-2:#3B4038;
    --ink-3:#6E736A;
    --paper:#F7F5EF;
    --surface:#FFFFFF;
    --surface-2:#EFF1E7;
    --primary:#0F2A22;
    --primary-hover:#174034;
    --accent:#C8F14B;
    --accent-2:#FF6B35;
    --line:#E2DED2;
    --line-strong:#C9C3B2;
    --success:#2E7D46;
    --warn:#B4432A;
    --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",monospace;
    --ease:cubic-bezier(.2,.7,.3,1);
    --space-section:56px;
  }
  @media (min-width:768px){ :root{ --space-section:72px; } }
  @media (min-width:1024px){ :root{ --space-section:96px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.85;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{ max-width:100%; height:auto; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; }
  h1,h2,h3,h4{ margin:0; font-weight:700; color:var(--ink); }
  p{ margin:0 0 1.1em; max-width:46rem; }
  p:last-child{ margin-bottom:0; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  .mono{ font-family:var(--font-mono); font-variant-numeric:tabular-nums; letter-spacing:.01em; }
  .wrap{ width:100%; max-width:1200px; margin:0 auto; padding:0 20px; }
  @media (min-width:768px){ .wrap{ padding:0 32px; } }
  @media (min-width:1024px){ .wrap{ padding:0 48px; } }

  :focus-visible{
    outline:2px solid var(--accent-2);
    outline-offset:2px;
    border-radius:4px;
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky; top:0; z-index:80;
    background:rgba(247,245,239,.86);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:border-color .22s var(--ease), background .22s var(--ease);
  }
  .site-header.is-scrolled{ border-bottom-color:var(--line); }
  .nav-wrap{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    height:72px;
    gap:16px;
  }
  .nav-left{ display:flex; align-items:center; gap:26px; justify-self:start; }
  .nav-right{ display:flex; align-items:center; gap:20px; justify-self:end; }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    transition:color .2s var(--ease);
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute; left:0; right:0; bottom:0;
    height:2px; background:var(--accent);
    transform:scaleX(0); transform-origin:left;
    transition:transform .22s var(--ease);
  }
  .nav-link:hover{ color:var(--ink); }
  .nav-link:hover::after{ transform:scaleX(1); }
  .nav-link.is-active{ color:var(--ink); font-weight:700; }
  .nav-link.is-active::after{ transform:scaleX(1); }

  .brand{
    display:flex; flex-direction:column; align-items:center;
    justify-self:center; line-height:1; color:var(--ink);
    padding:0 22px;
    border-left:1px solid var(--line);
    border-right:1px solid var(--line);
  }
  .brand-main{ font-size:19px; font-weight:800; letter-spacing:-.02em; }
  .brand-sub{ font-size:11px; letter-spacing:.28em; color:var(--ink-3); margin-top:5px; }

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    min-height:44px;
    padding:0 20px;
    border-radius:10px;
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .btn-primary{ background:var(--primary); color:var(--paper); }
  .btn-primary:hover{
    background:var(--accent); color:var(--ink);
    transform:translateY(-2px);
    box-shadow:0 4px 0 var(--primary);
  }
  .btn-primary:active{ transform:translateY(0); box-shadow:none; }
  .btn-ghost{ background:transparent; color:var(--ink); border-color:var(--ink); }
  .btn-ghost:hover{ background:var(--ink); color:var(--paper); transform:translateY(-2px); }
  .btn-accent{ background:var(--accent); color:var(--primary); }
  .btn-accent:hover{ background:var(--paper); color:var(--primary); transform:translateY(-2px); box-shadow:0 4px 0 var(--accent); }
  .btn-sm{ min-height:40px; padding:0 16px; font-size:14px; }
  .btn-link{
    display:inline-flex; align-items:center; gap:6px;
    font-size:15px; font-weight:600; color:var(--ink);
    border-bottom:1px solid var(--line-strong);
    padding-bottom:2px;
    transition:border-color .2s var(--ease), color .2s var(--ease);
  }
  .btn-link:hover{ border-bottom-color:var(--accent); color:var(--primary); }
  .btn-link .arrow{ transition:transform .2s var(--ease); }
  .btn-link:hover .arrow{ transform:translateX(4px); }

  .nav-toggle{
    display:none;
    width:44px; height:44px;
    align-items:center; justify-content:center;
    background:transparent; border:1px solid var(--line-strong);
    border-radius:10px; cursor:pointer;
    transition:border-color .2s var(--ease), background .2s var(--ease);
  }
  .nav-toggle:hover{ border-color:var(--ink); background:var(--surface); }
  .nav-toggle span{
    display:block; position:relative; width:18px; height:2px; background:var(--ink);
    transition:transform .22s var(--ease), background .22s var(--ease);
  }
  .nav-toggle span::before,.nav-toggle span::after{
    content:""; position:absolute; left:0; width:18px; height:2px; background:var(--ink);
    transition:transform .22s var(--ease), opacity .18s var(--ease);
  }
  .nav-toggle span::before{ top:-6px; }
  .nav-toggle span::after{ top:6px; }
  .nav-toggle[aria-expanded="true"] span{ background:transparent; }
  .nav-toggle[aria-expanded="true"] span::before{ transform:translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span::after{ transform:translateY(-6px) rotate(-45deg); }

  .drawer{
    position:fixed; inset:72px 0 0 0; z-index:75;
    background:var(--paper);
    padding:28px 20px 120px;
    overflow-y:auto;
    opacity:0; transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .22s var(--ease), transform .22s var(--ease);
    border-top:1px solid var(--line);
  }
  .drawer.is-open{ opacity:1; transform:none; pointer-events:auto; }
  .drawer-link{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 4px;
    font-size:20px; font-weight:700; color:var(--ink);
    border-bottom:1px solid var(--line);
    opacity:0;
  }
  .drawer-link small{ font-size:12px; font-weight:500; color:var(--ink-3); letter-spacing:.06em; }
  .drawer.is-open .drawer-link{ animation:riseIn .32s var(--ease) both; }
  .drawer.is-open .drawer-link:nth-child(1){ animation-delay:.02s; }
  .drawer.is-open .drawer-link:nth-child(2){ animation-delay:.06s; }
  .drawer.is-open .drawer-link:nth-child(3){ animation-delay:.10s; }
  .drawer.is-open .drawer-link:nth-child(4){ animation-delay:.14s; }
  .drawer.is-open .drawer-link:nth-child(5){ animation-delay:.18s; }
  @keyframes riseIn{ from{ opacity:0; transform:translateY(14px);} to{ opacity:1; transform:none;} }
  .drawer-cta{ position:fixed; left:0; right:0; bottom:0; padding:14px 20px 20px; background:var(--paper); border-top:1px solid var(--line); z-index:76; display:none; }
  .drawer-cta.is-open{ display:block; }
  .drawer-cta .btn{ width:100%; }
  body.no-scroll{ overflow:hidden; }

  @media (max-width:1023px){
    .nav-wrap{ grid-template-columns:1fr auto; }
    .nav-left{ display:none; }
    .brand{ grid-column:1; justify-self:start; align-items:flex-start; padding:0; border:0; }
    .nav-right{ grid-column:2; justify-self:end; }
    .nav-right .nav-link, .nav-right .btn{ display:none; }
    .nav-toggle{ display:inline-flex; }
  }
  @media (min-width:1024px){
    .drawer,.drawer-cta{ display:none !important; }
  }

  /* ---------- 通用板块 ---------- */
  .section{ padding:var(--space-section) 0; }
  .section-tight{ padding:calc(var(--space-section) * .62) 0; }
  .section-line{ border-top:1px solid var(--line); }
  .section-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:32px; }
  .h2{
    font-size:clamp(1.5rem,2.6vw,2.2rem);
    line-height:1.2;
    letter-spacing:-.02em;
    font-weight:800;
    position:relative;
  }
  .h2::before{
    content:""; display:block; width:20px; height:4px; background:var(--accent);
    margin-bottom:14px;
  }
  .h3{ font-size:1.2rem; font-weight:600; line-height:1.4; }
  .eyebrow{ font-size:13px; letter-spacing:.16em; color:var(--ink-3); font-weight:600; text-transform:uppercase; }
  .lede{ color:var(--ink-2); font-size:16.5px; line-height:1.85; }

  .badge{
    display:inline-flex; align-items:center; gap:6px;
    padding:4px 12px;
    border-radius:999px;
    font-size:13px; font-weight:600; letter-spacing:.02em;
    border:1px solid var(--line-strong);
    color:var(--ink-2);
    background:transparent;
    white-space:nowrap;
  }
  .badge-soft{ background:var(--surface-2); border-color:#D5DCC5; color:var(--primary); }
  .badge-data{ background:rgba(255,107,53,.08); border-color:rgba(255,107,53,.28); color:#B4432A; }

  /* ---------- Hero ---------- */
  .hero{ position:relative; padding:40px 0 48px; overflow:hidden; }
  @media (min-width:1024px){ .hero{ padding:80px 0 92px; } }
  .hero::before{
    content:""; position:absolute; inset:0; pointer-events:none;
    background-image:linear-gradient(to right, rgba(18,20,15,.035) 1px, transparent 1px),
                     linear-gradient(to bottom, rgba(18,20,15,.035) 1px, transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), transparent 78%);
    mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), transparent 78%);
  }
  .hero-grid{ position:relative; display:grid; gap:40px; }
  @media (min-width:1024px){
    .hero-grid{ grid-template-columns:7fr 5fr; gap:56px; align-items:center; }
  }
  .hero h1{
    font-size:clamp(1.95rem,4.4vw,3.4rem);
    line-height:1.12;
    letter-spacing:-.02em;
    font-weight:800;
    margin:18px 0 20px;
    max-width:19em;
  }
  .hero h1 em{ font-style:normal; color:var(--primary); position:relative; }
  .hero h1 em::after{
    content:""; position:absolute; left:0; right:0; bottom:.04em; height:.24em;
    background:var(--accent); opacity:.55; z-index:-1;
  }
  .hero-sub{ font-size:17px; color:var(--ink-2); max-width:34rem; margin-bottom:28px; }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-bottom:26px; }
  .hero-meta{
    display:flex; flex-wrap:wrap; gap:10px 26px;
    font-size:13px; color:var(--ink-3); letter-spacing:.02em;
    padding-top:18px; border-top:1px solid var(--line);
  }
  .hero-meta span{ display:inline-flex; align-items:center; gap:7px; }
  .hero-meta i{ width:6px; height:6px; background:var(--accent-2); display:inline-block; border-radius:1px; }

  .hero-figure{ position:relative; }
  .hero-figure img{
    width:100%; aspect-ratio:16/11; object-fit:cover;
    border-radius:20px; border:1px solid var(--line);
  }
  .spec-card{
    position:relative;
    margin-top:-34px; margin-left:auto;
    width:min(300px,88%);
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:14px;
    padding:18px 20px;
    transform:rotate(-2deg);
    box-shadow:0 4px 0 var(--primary);
  }
  .spec-card h3{ font-size:13px; letter-spacing:.1em; color:var(--ink-3); font-weight:600; margin-bottom:12px; }
  .spec-row{
    display:flex; justify-content:space-between; align-items:baseline; gap:12px;
    padding:8px 0; border-bottom:1px dashed var(--line);
    font-size:14px;
  }
  .spec-row:last-child{ border-bottom:0; padding-bottom:0; }
  .spec-row dt{ color:var(--ink-3); }
  .spec-row dd{ margin:0; font-family:var(--font-mono); font-variant-numeric:tabular-nums; font-weight:700; color:var(--ink); font-size:15px; }
  @media (max-width:1023px){
    .spec-card{ margin-top:14px; margin-left:0; transform:rotate(0); width:100%; box-shadow:0 3px 0 var(--accent); }
  }

  /* ---------- 场景锚点条 ---------- */
  .anchor-bar{
    display:flex; gap:10px; overflow-x:auto;
    padding:14px 0 18px;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    scrollbar-width:thin;
  }
  .anchor-pill{
    flex:0 0 auto;
    display:inline-flex; align-items:center; gap:9px;
    padding:9px 16px;
    border-radius:999px;
    border:1px solid var(--line-strong);
    background:transparent;
    font-size:14px; font-weight:600; color:var(--ink-2);
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .anchor-pill .num{ font-family:var(--font-mono); font-variant-numeric:tabular-nums; font-size:12px; color:var(--ink-3); transition:color .2s var(--ease); }
  .anchor-pill:hover{ border-color:var(--ink); color:var(--ink); transform:translateY(-2px); }
  .anchor-pill.is-on{ background:var(--primary); border-color:var(--primary); color:var(--paper); }
  .anchor-pill.is-on .num{ color:var(--accent); }

  /* ---------- 图文交替场景 ---------- */
  .scene-block{
    display:grid; gap:26px;
    padding:40px 0;
    border-top:1px solid var(--line);
  }
  .scene-block:first-of-type{ border-top:0; }
  @media (min-width:1024px){
    .scene-block{
      grid-template-columns:1fr 1fr;
      gap:64px;
      align-items:center;
      padding:60px 0;
    }
    .scene-block.is-reverse .scene-media{ order:2; }
  }
  .scene-media{ position:relative; }
  .scene-media img{
    width:100%; aspect-ratio:16/10; object-fit:cover;
    border-radius:14px; border:1px solid var(--line);
    transition:transform .24s var(--ease);
  }
  .scene-block:hover .scene-media img{ transform:scale(1.03); }
  .scene-num{
    position:absolute; top:14px; left:14px;
    display:inline-flex; align-items:center; justify-content:center;
    min-width:44px; height:34px; padding:0 10px;
    background:var(--primary); color:var(--accent);
    border-radius:8px;
    font-family:var(--font-mono); font-variant-numeric:tabular-nums;
    font-size:15px; font-weight:700; letter-spacing:.04em;
  }
  .scene-body h2{
    font-size:clamp(1.35rem,2.3vw,1.9rem);
    line-height:1.28; letter-spacing:-.02em; font-weight:800;
    margin:14px 0 18px;
  }
  .scene-body p{ color:var(--ink-2); font-size:16px; line-height:1.85; }
  .scene-points{ margin-top:24px; padding-top:20px; border-top:1px solid var(--line); }
  .scene-points h3{
    font-size:13px; letter-spacing:.12em; font-weight:700; color:var(--ink-3);
    margin-bottom:14px;
  }
  .marker-list li{
    position:relative;
    padding-left:20px;
    margin-bottom:12px;
    font-size:15px;
    color:var(--ink-2);
    line-height:1.7;
  }
  .marker-list li:last-child{ margin-bottom:0; }
  .marker-list li::before{
    content:""; position:absolute; left:0; top:.62em;
    width:6px; height:6px; background:var(--primary); border-radius:1px;
  }

  /* ---------- 引用卡 ---------- */
  .quote-card{
    margin:0;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:14px;
    padding:28px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease);
  }
  .quote-card:hover{ transform:translateY(-2px); box-shadow:0 4px 0 var(--primary); }
  @media (min-width:768px){ .quote-card{ padding:40px 44px; } }
  .quote-card blockquote{
    margin:0 0 26px;
    font-size:clamp(1.1rem,1.8vw,1.4rem);
    line-height:1.65;
    font-weight:600;
    color:var(--ink);
    max-width:44rem;
  }
  .quote-footer{
    display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between;
    gap:20px;
    padding-top:22px;
    border-top:1px solid var(--line);
  }
  .quote-name{ font-size:14px; font-weight:600; color:var(--ink-3); letter-spacing:.02em; }
  .quote-stats{ display:flex; flex-wrap:wrap; gap:14px 34px; }
  .quote-stats > div{ display:flex; flex-direction:column; gap:2px; }
  .quote-stats .mono{
    font-family:var(--font-mono); font-variant-numeric:tabular-nums;
    font-size:22px; font-weight:700; color:var(--accent-2); line-height:1.1;
  }
  .quote-stats small{ font-size:12.5px; color:var(--ink-3); letter-spacing:.02em; }

  /* ---------- FAQ ---------- */
  .faq-list{ max-width:46rem; border-top:1px solid var(--line); }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    position:relative;
    display:flex; align-items:flex-start; justify-content:space-between; gap:18px;
    padding:20px 0 20px 14px;
    font-size:16.5px; font-weight:600; color:var(--ink);
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary::before{
    content:""; position:absolute; left:0; top:22px; bottom:22px; width:3px;
    background:var(--accent); opacity:0;
    transition:opacity .2s var(--ease);
  }
  .faq-item[open] summary::before{ opacity:1; }
  .faq-item summary:hover{ color:var(--primary); }
  .faq-icon{
    flex:0 0 auto; position:relative;
    width:20px; height:20px; margin-top:4px;
    transition:transform .22s var(--ease);
  }
  .faq-icon::before,.faq-icon::after{
    content:""; position:absolute; left:50%; top:50%; background:var(--ink);
    transform:translate(-50%,-50%); border-radius:1px;
  }
  .faq-icon::before{ width:14px; height:2px; }
  .faq-icon::after{ width:2px; height:14px; }
  .faq-item[open] .faq-icon{ transform:rotate(45deg); }
  .faq-answer{ padding:0 0 22px 14px; color:var(--ink-2); font-size:15px; line-height:1.85; max-width:44rem; }
  .faq-answer p{ margin-bottom:.7em; }

  /* ---------- 相关链接区 ---------- */
  .rel-grid{ display:grid; gap:0; border-top:1px solid var(--line); }
  @media (min-width:768px){ .rel-grid{ grid-template-columns:1fr 1fr; column-gap:56px; } }
  .rel-link{
    display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:18px 0;
    border-bottom:1px solid var(--line);
    font-size:15.5px; font-weight:600; color:var(--ink);
    transition:color .2s var(--ease), padding-left .2s var(--ease);
  }
  .rel-link span.sub{ display:block; font-size:13px; font-weight:400; color:var(--ink-3); margin-top:2px; }
  .rel-link .arrow{ color:var(--ink-3); transition:transform .2s var(--ease), color .2s var(--ease); }
  .rel-link:hover{ color:var(--primary); padding-left:6px; }
  .rel-link:hover .arrow{ transform:translateX(4px); color:var(--accent-2); }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;
    background:var(--primary);
    color:var(--paper);
    padding:44px 0;
    overflow:hidden;
  }
  @media (min-width:1024px){ .cta-band{ padding:52px 0; } }
  .cta-band::before{
    content:""; position:absolute; inset:0; pointer-events:none;
    background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.045) 0 1px, transparent 1px 14px);
  }
  .cta-inner{ position:relative; display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:24px; }
  .cta-band h2{
    font-size:clamp(1.4rem,2.6vw,2rem);
    line-height:1.25; letter-spacing:-.02em; color:var(--paper); font-weight:800;
    margin-bottom:8px;
  }
  .cta-band p{ color:rgba(247,245,239,.74); font-size:15px; margin:0; }
  .cta-band .btn{ min-width:180px; }

  /* ---------- 页脚 ---------- */
  .site-footer{ background:var(--primary); color:var(--paper); padding:56px 0 0; }
  .footer-grid{
    display:grid; gap:36px;
    padding-bottom:40px;
  }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr .8fr .8fr 1fr; gap:48px; } }
  .footer-logo{ display:flex; flex-direction:column; line-height:1; margin-bottom:16px; }
  .footer-logo strong{ font-size:20px; font-weight:800; letter-spacing:-.02em; }
  .footer-logo span{ font-size:11px; letter-spacing:.28em; color:rgba(247,245,239,.6); margin-top:6px; }
  .footer-brand p{ color:rgba(247,245,239,.68); font-size:14.5px; line-height:1.8; max-width:24rem; }
  .footer-col h3{
    font-size:13px; letter-spacing:.14em; font-weight:700;
    color:rgba(247,245,239,.55);
    margin-bottom:16px;
  }
  .footer-col li{ margin-bottom:11px; }
  .footer-col a{
    font-size:14.5px; color:rgba(247,245,239,.86);
    border-bottom:1px solid transparent;
    transition:color .2s var(--ease), border-color .2s var(--ease);
  }
  .footer-col a:hover{ color:var(--accent); border-bottom-color:var(--accent); }
  .footer-note{ font-size:13.5px; color:rgba(247,245,239,.6); line-height:1.8; margin-bottom:16px; }
  .footer-bottom{
    display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px;
    padding:20px 0 26px;
    border-top:1px solid rgba(247,245,239,.16);
    font-size:12.5px;
    color:rgba(247,245,239,.55);
    letter-spacing:.02em;
  }

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    .scene-block:hover .scene-media img{ transform:none; }
  }

/* roulang page: category4 */
:root{
  --ink:#12140F;
  --ink-2:#3B4038;
  --ink-3:#6E736A;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --surface-2:#EFF1E7;
  --primary:#0F2A22;
  --primary-hover:#174034;
  --accent:#C8F14B;
  --accent-2:#FF6B35;
  --line:#E2DED2;
  --line-strong:#C9C3B2;
  --success:#2E7D46;
  --warn:#B4432A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-hero:20px;
  --shadow-hard:0 4px 0 var(--primary);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
a:focus-visible,
button:focus-visible,
summary:focus-visible{
  outline:2px solid var(--accent-2);
  outline-offset:2px;
  border-radius:4px;
}
::selection{background:var(--accent);color:var(--ink);}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
@media (min-width:1024px){ .container{padding-left:48px;padding-right:48px;} }

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,239,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(18,20,15,.04);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:72px;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .nav-wrap{padding:0 32px;} }
@media (min-width:1024px){ .nav-wrap{padding:0 48px;} }

.nav-left{display:flex;align-items:center;gap:26px;}
.nav-right{display:flex;align-items:center;gap:22px;justify-content:flex-end;}

.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  padding:6px 1px;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  line-height:1;
  padding:6px 18px;
  position:relative;
}
.brand::before,
.brand::after{
  content:"";
  position:absolute;
  top:8px;
  bottom:8px;
  width:1px;
  background:var(--line);
}
.brand::before{left:0;}
.brand::after{right:0;}
.brand-main{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--primary);
}
.brand-sub{
  font-size:11px;
  letter-spacing:.24em;
  color:var(--ink-3);
  padding-left:.24em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:var(--paper);}
.btn-primary:hover{
  background:var(--accent);
  color:var(--ink);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hard);
}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:var(--primary);}
.btn-accent:hover{background:var(--paper);color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 0 rgba(200,241,75,.5);}
.btn-nav{padding:9px 18px;font-size:14px;min-height:40px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
  position:relative;
  padding-bottom:2px;
}
.link-arrow::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow svg{transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line-strong);
  border-radius:10px;
  cursor:pointer;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);background:var(--surface-2);}
.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* 移动抽屉 */
.mobile-drawer{
  display:none;
  position:fixed;
  left:0;right:0;top:72px;bottom:0;
  z-index:70;
  background:rgba(247,245,239,.98);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  padding:20px 20px 32px;
  overflow-y:auto;
  flex-direction:column;
}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer a.drawer-link{
  font-size:20px;
  font-weight:700;
  letter-spacing:-.01em;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  opacity:0;
  transform:translateY(12px);
  animation:drawerRise .34s var(--ease) forwards;
}
.mobile-drawer a.drawer-link:nth-child(1){animation-delay:.04s;}
.mobile-drawer a.drawer-link:nth-child(2){animation-delay:.08s;}
.mobile-drawer a.drawer-link:nth-child(3){animation-delay:.12s;}
.mobile-drawer a.drawer-link:nth-child(4){animation-delay:.16s;}
.mobile-drawer a.drawer-link:nth-child(5){animation-delay:.2s;}
.drawer-cta{position:sticky;bottom:0;margin-top:auto;padding-top:18px;background:rgba(247,245,239,.98);}
@keyframes drawerRise{to{opacity:1;transform:translateY(0);}}

@media (max-width:1023px){
  .nav-wrap{grid-template-columns:auto 1fr auto;gap:12px;}
  .nav-left,.nav-right .nav-link,.nav-right .btn-nav{display:none;}
  .brand{align-items:flex-start;padding:0;}
  .brand::before,.brand::after{display:none;}
  .brand-main{font-size:18px;}
  .nav-right{justify-content:flex-end;gap:0;}
  .menu-toggle{display:inline-flex;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important;}
}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  padding:22px 0 0;
}
.crumbs a{color:var(--ink-3);transition:color .18s var(--ease);}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--ink-2);font-weight:500;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:8px 0 56px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(18,20,15,.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(18,20,15,.5) 1px, transparent 1px);
  background-size:56px 56px;
  opacity:.035;
  pointer-events:none;
}
.page-hero > .container{position:relative;z-index:1;}

.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:start;
  padding-top:36px;
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:32px;padding-top:28px;}
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--primary);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:22px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  background:var(--accent-2);
  border-radius:50%;
}

h1{
  font-size:clamp(1.9rem,4.4vw,3.4rem);
  line-height:1.12;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--ink);
  max-width:22ch;
}
.hero-lead{
  margin-top:22px;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:34rem;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.meta-pill{
  font-size:13px;
  color:var(--ink-2);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:6px 14px;
  background:transparent;
}
.meta-pill.mono{color:var(--accent-2);border-color:rgba(255,107,53,.35);background:rgba(255,107,53,.08);}

/* 目录卡 */
.toc-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px 18px;
  transition:box-shadow .22s var(--ease), transform .22s var(--ease), border-color .22s var(--ease);
}
.toc-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hard);
  border-color:var(--line-strong);
}
.toc-title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--ink-3);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  margin-bottom:6px;
}
.toc-list{counter-reset:toc;}
.toc-list li{counter-increment:toc;}
.toc-list a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 0 9px 12px;
  border-left:2px solid transparent;
  font-size:14.5px;
  line-height:1.5;
  color:var(--ink-2);
  transition:color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.toc-list a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--ink-3);
  flex:none;
}
.toc-list a:hover{color:var(--ink);border-left-color:var(--accent);background:var(--surface-2);}
.toc-list a.is-current{color:var(--primary);font-weight:700;border-left-color:var(--accent);}

/* ---------- 板块 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){ .section{padding:72px 0;} }
@media (min-width:1024px){ .section{padding:88px 0;} }
.section--tint{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--tight{padding-top:0;}

.sec-title{
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--ink);
  margin-bottom:14px;
}
.sec-title::before{
  content:"";
  display:block;
  width:20px;
  height:4px;
  border-radius:2px;
  background:var(--accent);
  margin-bottom:14px;
}
.sec-desc{font-size:15.5px;color:var(--ink-2);max-width:46rem;}
.section-head{margin-bottom:36px;}

/* ---------- FAQ 两列布局 ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:start;
}
@media (max-width:1023px){
  .faq-layout{grid-template-columns:1fr;gap:40px;}
}
.faq-main > .sec-title{margin-top:8px;}
.faq-main > .sec-title:not(:first-child){margin-top:44px;}

.faq-list{border-top:1px solid var(--line);}
.faq-item{
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:20px 0;
  cursor:pointer;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary-hover);}
.faq-num{
  flex:none;
  width:26px;
  font-size:12.5px;
  font-weight:700;
  color:var(--accent-2);
  padding-top:5px;
}
.faq-q{flex:1;line-height:1.55;}
.faq-icon{
  flex:none;
  position:relative;
  width:18px;
  height:18px;
  margin-top:4px;
  transition:transform .22s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-item[open] summary{color:var(--primary);}
.faq-body{
  position:relative;
  padding:0 0 22px 40px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq-body p + p{margin-top:10px;}
.faq-body::before{
  content:"";
  position:absolute;
  left:0;
  top:2px;
  bottom:22px;
  width:3px;
  border-radius:2px;
  background:var(--accent);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item[open] .faq-body::before{opacity:1;}
.faq-body strong{color:var(--ink);font-weight:600;}

/* ---------- 侧栏卡 ---------- */
.faq-aside{position:sticky;top:96px;}
@media (max-width:1023px){ .faq-aside{position:static;} }

.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  margin-bottom:20px;
  transition:border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}
.side-card:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hard);
}
.side-card img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:10px;
  margin-bottom:18px;
  transition:transform .24s var(--ease);
}
.side-card:hover img{transform:scale(1.03);}
.side-card h3{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:12px;
  color:var(--ink);
}
.side-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.side-card--dark{
  background:var(--primary);
  border-color:var(--primary);
  color:var(--paper);
}
.side-card--dark h3{color:var(--paper);}
.side-card--dark p{color:rgba(247,245,239,.78);margin-bottom:18px;}
.side-card--dark:hover{box-shadow:0 4px 0 var(--accent);}

.tick-list li{
  position:relative;
  padding-left:16px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-2);
  margin-bottom:8px;
}
.tick-list li:last-child{margin-bottom:0;}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:1px;
  background:var(--accent);
}
.tick-list li span{color:var(--ink);font-weight:600;}

.mini-dl > div{
  padding:11px 0;
  border-bottom:1px dashed var(--line);
}
.mini-dl > div:last-child{border-bottom:none;padding-bottom:0;}
.mini-dl dt{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;}
.mini-dl dd{margin:3px 0 0;font-size:13.5px;line-height:1.7;color:var(--ink-3);}

/* ---------- 引用卡 ---------- */
.quote-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:36px 32px 28px;
  position:relative;
  overflow:hidden;
}
.quote-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:var(--primary);
}
.quote-text{
  font-size:clamp(1.15rem,2vw,1.45rem);
  line-height:1.7;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink);
  max-width:40rem;
}
.quote-footer{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.quote-name{font-size:14px;color:var(--ink-3);}
.quote-stats{display:flex;flex-wrap:wrap;gap:36px;}
.quote-stats > div{display:flex;flex-direction:column;gap:2px;}
.quote-stats .mono{
  font-size:1.4rem;
  font-weight:700;
  color:var(--accent-2);
  letter-spacing:-.01em;
}
.quote-stats small{font-size:12.5px;color:var(--ink-3);letter-spacing:.02em;}
@media (max-width:639px){
  .quote-card{padding:26px 20px 22px;}
  .quote-stats{gap:22px;}
}

/* ---------- 名词说明 ---------- */
.glossary{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 56px;
}
@media (max-width:767px){ .glossary{grid-template-columns:1fr;} }
.glossary-item{
  padding:22px 0;
  border-top:1px solid var(--line-strong);
}
.glossary-item dt{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.01em;
  margin-bottom:6px;
  display:flex;
  align-items:baseline;
  gap:8px;
}
.glossary-item dt::before{
  content:"";
  width:6px;height:6px;
  border-radius:1px;
  background:var(--accent);
  flex:none;
  transform:translateY(-2px);
}
.glossary-item dd{
  margin:0 0 0 14px;
  font-size:15px;
  line-height:1.82;
  color:var(--ink-2);
}

/* ---------- 相关链接 ---------- */
.related-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:26px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.related-label{
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--ink-3);
}
.related-links{display:flex;flex-wrap:wrap;gap:10px;}
.related-links a{
  font-size:14px;
  padding:8px 16px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  color:var(--ink-2);
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.related-links a:hover{
  background:var(--primary);
  border-color:var(--primary);
  color:var(--paper);
  transform:translateY(-2px);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--primary);
  color:var(--paper);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg, rgba(247,245,239,.05) 0 2px, transparent 2px 14px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding-top:56px;
  padding-bottom:56px;
}
.cta-inner h2{
  font-size:clamp(1.4rem,2.4vw,2rem);
  line-height:1.25;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--paper);
  margin-bottom:10px;
}
.cta-inner p{
  font-size:15px;
  line-height:1.8;
  color:rgba(247,245,239,.76);
  max-width:34rem;
}
@media (max-width:639px){
  .cta-inner{padding-top:44px;padding-bottom:44px;}
  .cta-inner .btn{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary);
  color:rgba(247,245,239,.82);
  border-top:1px solid rgba(247,245,239,.14);
  padding-top:60px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
@media (max-width:1023px){ .footer-grid{grid-template-columns:1fr 1fr;gap:32px;} }
@media (max-width:639px){ .footer-grid{grid-template-columns:1fr;gap:28px;} }

.footer-logo{display:inline-flex;flex-direction:column;line-height:1.1;margin-bottom:16px;}
.footer-logo strong{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--paper);
}
.footer-logo span{
  font-size:11px;
  letter-spacing:.24em;
  color:rgba(247,245,239,.6);
  margin-top:5px;
}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(247,245,239,.7);max-width:24rem;}
.footer-col h3{
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:rgba(247,245,239,.55);
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  font-size:14.5px;
  padding:6px 0;
  color:rgba(247,245,239,.82);
  transition:color .18s var(--ease), transform .18s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-contact p{font-size:14px;line-height:1.8;color:rgba(247,245,239,.7);margin-bottom:16px;}
.footer-bottom{
  border-top:1px solid rgba(247,245,239,.14);
  padding:20px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:12.5px;
  color:rgba(247,245,239,.55);
  letter-spacing:.02em;
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

/* roulang page: category5 */
:root{
  --ink:#12140F;
  --ink-2:#3B4038;
  --ink-3:#6E736A;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --surface-2:#EFF1E7;
  --primary:#0F2A22;
  --primary-hover:#174034;
  --accent:#C8F14B;
  --accent-2:#FF6B35;
  --line:#E2DED2;
  --line-strong:#C9C3B2;
  --ok:#2E7D46;
  --warn:#B4432A;
  --font-sans:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Mono",monospace;
  --r-card:14px;
  --r-img:14px;
  --r-hero:20px;
  --r-btn:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-hard:0 4px 0 var(--primary);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,239,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 48px;
  height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
}
.nav-left{
  display:flex;align-items:center;gap:26px;justify-self:start;
  padding-right:26px;border-right:1px solid var(--line);
}
.nav-right{
  display:flex;align-items:center;gap:14px;justify-self:end;padding-left:26px;
}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{width:100%}
.brand{
  display:flex;flex-direction:column;align-items:center;line-height:1;
  padding:0 26px;transition:transform .18s var(--ease);
}
.brand:hover{transform:translateY(-1px)}
.brand-main{font-size:20px;font-weight:800;letter-spacing:-.02em}
.brand-sub{font-size:11px;letter-spacing:.3em;padding-left:.3em;color:var(--ink-3);margin-top:6px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:var(--paper);border-color:var(--primary)}
.btn-primary:hover{background:var(--accent);color:var(--ink);border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-hard)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);box-shadow:0 4px 0 var(--line-strong)}
.btn-secondary:active{transform:translateY(0);box-shadow:none}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:var(--paper);color:var(--primary);border-color:var(--paper);transform:translateY(-2px);box-shadow:0 4px 0 rgba(0,0,0,.28)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--primary);
  border-bottom:1px solid transparent;transition:border-color .18s var(--ease),gap .18s var(--ease);
}
.link-arrow:hover{border-bottom-color:var(--primary);gap:10px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:500;
  border:1px solid var(--line-strong);color:var(--ink-2);background:var(--surface);
}
.badge-green{background:var(--surface-2);border-color:#D8DCC7;color:var(--primary);font-weight:600}
.badge-orange{background:rgba(255,107,53,.08);border-color:rgba(255,107,53,.32);color:#B4432A;font-weight:600}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-divide{border-top:1px solid var(--line)}
.h2{
  position:relative;padding-top:22px;
  font-size:clamp(1.5rem,2.6vw,2.2rem);line-height:1.2;font-weight:800;
}
.h2::before{content:"";position:absolute;top:0;left:0;width:20px;height:4px;background:var(--accent)}
.h3{font-size:1.2rem;font-weight:600;line-height:1.5;letter-spacing:-.01em}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:46rem}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head .lead{margin-top:8px}
.section-head-right{flex-shrink:0;padding-bottom:6px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 0;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(18,20,15,.035) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(18,20,15,.035) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 70% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 70% 0%,#000 0%,transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px}
.hero-title{
  font-size:clamp(2.1rem,4.6vw,3.4rem);
  line-height:1.1;letter-spacing:-.02em;font-weight:800;margin-bottom:20px;
}
.hero-title em{font-style:normal;position:relative;white-space:nowrap}
.hero-title em::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.22em;
  background:var(--accent);opacity:.55;z-index:-1;
}
.hero-sub{font-size:18px;line-height:1.8;color:var(--ink-2);max-width:34rem;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--ink-3)}
.hero-meta .mono{color:var(--ink-2);font-weight:600}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block}
.hero-media{position:relative}
.hero-figure{position:relative;border-radius:var(--r-hero);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center 40%}
.hero-tag{
  position:absolute;left:16px;top:16px;
  background:rgba(15,42,34,.9);color:var(--paper);
  font-size:12px;letter-spacing:.08em;padding:6px 12px;border-radius:999px;
  font-family:var(--font-mono);
}
.hero-card{
  position:absolute;right:-8px;bottom:-26px;
  width:min(272px,82%);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-hard);
  transform:rotate(-2deg);
  padding:18px 20px;
  transition:transform .22s var(--ease);
}
.hero-card:hover{transform:rotate(0deg) translateY(-2px)}
.hero-card-title{font-size:12px;letter-spacing:.1em;color:var(--ink-3);margin-bottom:10px}
.hero-card-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line)}
.hero-card-row:last-child{border-bottom:0;padding-bottom:0}
.hero-card-row span{font-size:13px;color:var(--ink-3)}
.hero-card-row strong{font-family:var(--font-mono);font-size:15px;color:var(--ink);font-weight:600}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:76px}
.metric{padding:30px 0 28px;display:flex;align-items:baseline;gap:16px}
.metric + .metric{border-left:1px solid var(--line);padding-left:36px}
.metric-num{font-family:var(--font-mono);font-size:clamp(1.9rem,3.2vw,2.5rem);font-weight:700;line-height:1;color:var(--accent-2)}
.metric-label{font-size:14px;color:var(--ink-2);line-height:1.6;max-width:11rem}

/* ---------- 对照表 ---------- */
.compare-wrap{overflow-x:auto;border-radius:12px}
table.compare{width:100%;border-collapse:collapse;font-size:15.5px;min-width:660px}
.compare caption{text-align:left;padding-bottom:14px;font-size:13px;color:var(--ink-3);letter-spacing:.04em}
.compare thead th{
  text-align:left;padding:16px 20px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ink-3);border-bottom:1px solid var(--line-strong);white-space:nowrap;
}
.compare thead th.col-best{
  color:var(--primary);background:var(--surface-2);
  border-top:3px solid var(--accent);border-radius:10px 10px 0 0;
}
.compare tbody th{
  text-align:left;padding:18px 20px;font-weight:600;font-size:15.5px;color:var(--ink);
  border-bottom:1px solid var(--line);white-space:nowrap;width:22%;
}
.compare tbody td{
  padding:18px 20px;border-bottom:1px solid var(--line);color:var(--ink-2);line-height:1.7;
}
.compare tbody td.col-best{background:rgba(239,241,231,.78);color:var(--ink);font-weight:500}
.compare tbody tr:hover td{background:rgba(239,241,231,.45)}
.compare tbody tr:hover td.col-best{background:rgba(239,241,231,.95)}
.compare .yes{color:var(--ok);font-weight:600}
.compare .no{color:var(--warn);font-weight:600}

/* ---------- 案例卡 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:18px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hard);border-color:var(--line-strong)}
.case-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.case-title{font-size:1.15rem;font-weight:700;line-height:1.5;letter-spacing:-.01em}
.case-desc{font-size:15.5px;color:var(--ink-2);line-height:1.8}
.case-data{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.case-data .num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--accent-2);display:block;line-height:1.2}
.case-data .lbl{font-size:12.5px;color:var(--ink-3);line-height:1.5;display:block;margin-top:4px}
.case-foot{margin-top:auto}

/* ---------- 引用卡 ---------- */
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--r-card);padding:40px 44px;
}
.quote-mark{font-family:var(--font-mono);font-size:38px;line-height:1;color:var(--accent);margin-bottom:10px;display:block}
.quote-text{font-size:clamp(1.15rem,2vw,1.4rem);line-height:1.75;font-weight:600;color:var(--ink);max-width:46rem}
.quote-footer{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  margin-top:28px;padding-top:24px;border-top:1px solid var(--line);
}
.quote-name{font-weight:600;font-size:15px;color:var(--ink-2)}
.quote-stats{display:flex;flex-wrap:wrap;gap:40px}
.quote-stats .mono{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--accent-2);display:block;line-height:1.2}
.quote-stats small{font-size:12.5px;color:var(--ink-3);display:block;margin-top:2px}

/* ---------- 要点列表 ---------- */
.point-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.mark-list{display:grid;gap:20px}
.mark-list li{position:relative;padding-left:24px;font-size:16px;line-height:1.8;color:var(--ink-2)}
.mark-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;background:var(--accent);
}
.mark-list li strong{color:var(--ink);font-weight:600}
.note-box{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:24px 26px;background:rgba(239,241,231,.5);
}
.note-box .note-title{font-size:14px;font-weight:700;color:var(--primary);letter-spacing:.04em;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.note-box p{font-size:15px;color:var(--ink-2);line-height:1.8;margin:0}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--primary);color:var(--paper);
  border-radius:var(--r-hero);
  padding:48px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(247,245,239,.05) 0 2px,transparent 2px 12px);
}
.cta-band-text{position:relative;max-width:34rem}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.25;margin-bottom:10px;color:var(--paper)}
.cta-band p{font-size:15px;color:rgba(247,245,239,.78);margin:0}
.cta-band-actions{position:relative;flex-shrink:0}
.cta-band .btn-accent:hover{box-shadow:0 4px 0 rgba(0,0,0,.3)}

/* ---------- 相关内容 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:32px}
.related-link{
  display:flex;flex-direction:column;gap:8px;
  padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.related-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-hard);border-color:var(--line-strong)}
.related-link .idx{font-family:var(--font-mono);font-size:12px;color:var(--accent-2);font-weight:700;letter-spacing:.08em}
.related-link .name{font-size:16px;font-weight:600;color:var(--ink)}
.related-link .hint{font-size:13px;color:var(--ink-3);line-height:1.6}
.back-home{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--ink-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary);color:var(--paper);margin-top:96px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand .brand-main{font-size:22px;color:var(--paper);letter-spacing:-.02em}
.footer-brand .brand-sub{color:rgba(247,245,239,.6);font-size:11px;letter-spacing:.3em;margin-top:8px}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(247,245,239,.7);max-width:22rem}
.footer-title{font-size:13px;letter-spacing:.14em;color:rgba(247,245,239,.55);margin-bottom:16px}
.footer-list{display:grid;gap:11px}
.footer-list a{font-size:14.5px;color:rgba(247,245,239,.82);transition:color .18s var(--ease),padding-left .18s var(--ease)}
.footer-list a:hover{color:var(--accent);padding-left:4px}
.footer-block-note{font-size:14px;color:rgba(247,245,239,.7);line-height:1.8;margin-bottom:16px}
.footer-bottom{
  border-top:1px solid rgba(247,245,239,.16);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(247,245,239,.6);
}
.footer-bottom .mono{color:rgba(247,245,239,.75)}

/* ---------- 抽屉菜单 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .28s var(--ease),opacity .24s var(--ease),visibility .28s;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
  display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;
}
.drawer-nav{padding:28px 20px;display:grid;gap:4px;flex:1;overflow-y:auto}
.drawer-link{
  display:block;padding:14px 4px;font-size:20px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(14px);
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.drawer.is-open .drawer-link{opacity:1;transform:translateY(0)}
.drawer.is-open .drawer-link:nth-child(1){transition-delay:.04s}
.drawer.is-open .drawer-link:nth-child(2){transition-delay:.08s}
.drawer.is-open .drawer-link:nth-child(3){transition-delay:.12s}
.drawer.is-open .drawer-link:nth-child(4){transition-delay:.16s}
.drawer.is-open .drawer-link:nth-child(5){transition-delay:.2s}
.drawer-foot{padding:16px 20px 26px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
  .header-inner{padding:0 32px}
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .header-inner{display:flex;justify-content:space-between;gap:12px;padding:0 32px}
  .nav-left{display:none}
  .nav-right{padding-left:0;border-left:0}
  .nav-right .btn{display:none}
  .nav-toggle{display:flex}
  .brand{align-items:flex-start;padding:0}
  .section{padding:72px 0}
  .hero{padding-top:48px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-media{order:2;max-width:560px}
  .hero-sub{max-width:none}
  .metrics{margin-top:56px}
  .metric + .metric{padding-left:24px}
  .point-grid{grid-template-columns:1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .case-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .header-inner{padding:0 20px;height:64px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head-right{padding-bottom:0}
  .hero-title{font-size:clamp(1.9rem,7.4vw,2.5rem)}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-card{position:relative;right:auto;bottom:auto;width:100%;margin-top:16px;transform:none;box-shadow:none}
  .hero-card:hover{transform:none}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric{padding:20px 0;gap:10px;flex-direction:column;align-items:flex-start}
  .metric + .metric{border-left:0;padding-left:0}
  .metric:nth-child(even){border-left:1px solid var(--line);padding-left:20px}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}
  .compare-wrap{overflow:visible}
  table.compare{min-width:0}
  .compare thead{display:none}
  .compare,.compare tbody,.compare tr,.compare th,.compare td{display:block;width:100%}
  .compare tbody tr{
    border:1px solid var(--line);border-radius:14px;background:var(--surface);
    margin-bottom:16px;padding:6px 0;overflow:hidden;
  }
  .compare tbody th{padding:12px 18px 6px;border-bottom:0;white-space:normal;font-size:16px;width:auto}
  .compare tbody td{padding:10px 18px;border-bottom:0}
  .compare tbody td::before{
    content:attr(data-label);display:block;font-size:11.5px;letter-spacing:.08em;
    color:var(--ink-3);margin-bottom:4px;
  }
  .compare tbody td.col-best{background:var(--surface-2);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;margin:4px 12px;padding:12px 14px}
  .compare tbody tr:hover td{background:transparent}
  .compare tbody tr:hover td.col-best{background:var(--surface-2)}
  .case-card{padding:22px}
  .case-data{grid-template-columns:1fr;gap:14px;padding:16px 0}
  .quote-card{padding:26px 22px}
  .quote-stats{gap:24px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px}
  .site-footer{margin-top:56px;padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.case-card:hover,.related-link:hover,.hero-card:hover{transform:none !important}
}