/* roulang page: index */
:root{
    --pine:#103C34;
    --pine-600:#1C5549;
    --coral:#D95A3A;
    --coral-600:#BF4528;
    --paper:#F6F2EA;
    --paper-2:#FCFAF6;
    --ink:#1B1F1D;
    --muted:#66706B;
    --line:#E4DED3;
    --sand:#C9A86A;
    --night:#101815;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-card:0 8px 24px rgba(16,60,52,.06);
    --shadow-lift:0 14px 36px rgba(16,60,52,.10);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--paper-2);
    -webkit-font-smoothing:antialiased;
    padding-bottom:0;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  input,textarea,select{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;font-weight:700;letter-spacing:-.02em;color:var(--pine);}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--coral);outline-offset:2px;border-radius:6px;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.95);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(10px);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,60,52,.07);}
  .nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;
    display:grid;place-items:center;
    background:rgba(16,60,52,.07);color:var(--pine);
    flex-shrink:0;
  }
  .brand-text{font-size:17px;font-weight:700;color:var(--pine);letter-spacing:-.01em;white-space:nowrap;}
  .nav-links{display:flex;align-items:center;gap:28px;flex:1;margin-left:8px;}
  .nav-link{position:relative;font-size:15px;font-weight:500;color:var(--muted);padding:6px 0;transition:color .2s ease;white-space:nowrap;}
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--coral);border-radius:2px;
    transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover,.nav-link.is-active{color:var(--pine);}
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
  .nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .nav-search{position:relative;display:flex;align-items:center;}
  .nav-search svg{position:absolute;left:14px;width:16px;height:16px;color:var(--muted);pointer-events:none;}
  .nav-search input{
    width:220px;height:40px;border-radius:999px;border:1px solid var(--line);
    background:var(--paper);padding:0 16px 0 38px;font-size:14px;
    transition:background .2s,border-color .2s,box-shadow .2s;
  }
  .nav-search input::placeholder{color:#9AA39E;}
  .nav-search input:focus{
    outline:none;background:#fff;border-color:var(--coral);
    box-shadow:0 0 0 3px rgba(217,90,58,.15);
  }
  .hamburger{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);background:#fff;
    align-items:center;justify-content:center;color:var(--pine);
  }
  .hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
  .hamburger span::before,.hamburger span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
  }
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:52px;padding:0 28px;border-radius:var(--radius-md);
    font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;
    transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
    white-space:nowrap;
  }
  .btn svg{width:16px;height:16px;transition:transform .2s ease;}
  .btn-primary{background:var(--coral-600);color:#fff;box-shadow:0 6px 16px rgba(191,69,40,.22);}
  .btn-primary:hover{background:#A83A20;transform:translateY(-1px);box-shadow:var(--shadow-lift);}
  .btn-primary:active{transform:translateY(0) scale(.99);box-shadow:none;}
  .btn-ghost{background:transparent;color:var(--pine);border-color:var(--pine);}
  .btn-ghost:hover{background:var(--pine);color:#fff;transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0) scale(.99);}
  .btn-sm{height:40px;padding:0 20px;border-radius:999px;font-size:14px;}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--pine);
    transition:color .2s ease;
  }
  .btn-text svg{width:14px;height:14px;transition:transform .2s ease;}
  .btn-text:hover{color:var(--coral-600);}
  .btn-text:hover svg{transform:translateX(4px);}
  .btn[disabled]{opacity:.5;cursor:not-allowed;}

  /* ---------- hero ---------- */
  .hero{
    position:relative;
    padding:64px 0 92px;
    background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
    color:var(--pine-600);background:rgba(16,60,52,.07);
    padding:6px 14px;border-radius:999px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--coral);}
  h1.hero-title{
    margin:20px 0 0;
    font-size:clamp(38px,4.6vw,60px);
    line-height:1.1;
    font-weight:700;
  }
  .hero-title .u-mark{
    background:linear-gradient(transparent 66%,rgba(217,90,58,.28) 66%);
    padding:0 2px;
  }
  .hero-sub{margin:22px 0 0;font-size:18px;line-height:1.7;color:var(--muted);max-width:560px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .hero-note{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:24px;font-size:13px;color:var(--muted);}
  .hero-note span{display:inline-flex;align-items:center;gap:6px;}
  .hero-note span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--sand);}

  .hero-visual{
    position:relative;height:520px;border-radius:var(--radius-lg);overflow:hidden;
    background:var(--pine);box-shadow:var(--shadow-lift);
  }
  .hero-visual-bg{
    position:absolute;inset:0;background-size:cover;background-position:center;
    opacity:.5;
  }
  .hero-visual::after{
    content:"";position:absolute;inset:0;
    background:
      linear-gradient(155deg,rgba(16,60,52,.78),rgba(16,24,21,.9)),
      repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 40px),
      repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 40px);
  }
  .device{
    position:absolute;z-index:2;border-radius:16px;overflow:hidden;
    border:1px solid rgba(255,255,255,.2);
    box-shadow:0 24px 60px rgba(0,0,0,.38);
    background:#0B1210;
  }
  .device img{width:100%;height:100%;object-fit:cover;}
  .device-phone{width:164px;height:330px;left:32px;bottom:-22px;}
  .device-tablet{width:246px;height:320px;right:-10px;top:72px;}
  .float-tag{
    position:absolute;z-index:3;
    font-size:12px;font-weight:600;color:var(--pine);
    background:rgba(255,255,255,.94);
    padding:7px 13px;border-radius:999px;
    box-shadow:0 8px 20px rgba(0,0,0,.2);
    animation:floatY 6s ease-in-out infinite alternate;
  }
  .tag-a{left:16px;top:64px;}
  .tag-b{right:22px;bottom:56px;animation-delay:1.4s;}
  @keyframes floatY{from{transform:translateY(0);}to{transform:translateY(-10px);}}

  /* ---------- section shells ---------- */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .section-head{max-width:720px;}
  .section-label{
    display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
    color:var(--coral-600);text-transform:uppercase;
  }
  .section-title{margin:12px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.22;}
  .section-desc{margin:16px 0 0;font-size:16px;line-height:1.8;color:var(--muted);}

  /* ---------- bento ---------- */
  .bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-top:48px;}
  .bento-card{
    position:relative;
    background:var(--paper-2);border:1px solid var(--line);
    border-radius:var(--radius-lg);padding:28px;
    transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
    min-height:200px;
    display:flex;flex-direction:column;
  }
  .bento-card:hover{border-color:rgba(217,90,58,.35);box-shadow:var(--shadow-lift);transform:translateY(-3px);}
  .bento-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
  .bento-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:rgba(16,60,52,.08);color:var(--pine);
    transition:background .22s ease,color .22s ease;
  }
  .bento-icon svg{width:22px;height:22px;}
  .bento-card:hover .bento-icon{background:rgba(217,90,58,.12);color:var(--coral-600);}
  .bento-idx{font-family:"Noto Serif SC",serif;font-size:14px;color:var(--sand);letter-spacing:.06em;}
  .bento-card h3{margin:22px 0 0;font-size:20px;line-height:1.35;}
  .bento-card p{margin:10px 0 0;font-size:14px;line-height:1.75;color:var(--muted);}
  .span-7{grid-column:span 7;}
  .span-5{grid-column:span 5;}
  .span-4{grid-column:span 4;}
  .span-3{grid-column:span 3;}

  /* ---------- shots ---------- */
  .shots-band{background:#EFEAE0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .shots-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
  .shots-nav{display:flex;gap:10px;}
  .round-btn{
    width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
    display:grid;place-items:center;color:var(--pine);
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .round-btn svg{width:18px;height:18px;}
  .round-btn:hover{background:var(--pine);color:#fff;border-color:var(--pine);transform:translateY(-1px);}
  .shots{
    display:flex;gap:20px;margin-top:36px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:14px;scrollbar-width:thin;
  }
  .shots::-webkit-scrollbar{height:6px;}
  .shots::-webkit-scrollbar-thumb{background:rgba(16,60,52,.2);border-radius:999px;}
  .shot{
    flex:0 0 340px;scroll-snap-align:start;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    overflow:hidden;transition:box-shadow .22s ease,transform .22s ease;
  }
  .shot:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
  .shot-frame{aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
  .shot-frame img{width:100%;height:100%;object-fit:cover;}
  .shot-cap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;}
  .shot-cap strong{font-size:15px;font-weight:600;color:var(--ink);}
  .shot-cap span{font-size:12px;color:var(--muted);background:var(--paper);padding:3px 10px;border-radius:999px;}

  /* ---------- requirements ---------- */
  .req-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
  .req-sticky{position:sticky;top:104px;}
  .req-list dl{margin:0;}
  .req-row{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    padding:18px 4px;border-bottom:1px solid var(--line);
  }
  .req-row:first-child{border-top:1px solid var(--line);}
  .req-row dt{font-size:14px;color:var(--muted);flex-shrink:0;}
  .req-row dd{margin:0;font-size:15px;color:var(--ink);font-weight:500;text-align:right;}
  .badge{
    display:inline-flex;align-items:center;gap:5px;
    font-size:12px;font-weight:600;padding:2px 10px;border-radius:999px;
    background:rgba(217,90,58,.12);color:var(--coral-600);margin-left:8px;
  }
  .badge-pine{background:rgba(16,60,52,.1);color:var(--pine-600);}

  /* ---------- reviews ---------- */
  .reviews{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .review-wall{columns:3;column-gap:24px;margin-top:48px;}
  .review-card{
    break-inside:avoid;margin-bottom:24px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:24px;transition:transform .2s ease,box-shadow .2s ease;
  }
  .review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card);}
  .review-quote{font-family:"Noto Serif SC",serif;font-size:44px;line-height:.7;color:rgba(217,90,58,.24);}
  .review-card p{margin:12px 0 0;font-size:15px;line-height:1.8;color:#3A423F;}
  .review-foot{display:flex;align-items:center;gap:12px;margin-top:20px;}
  .avatar{
    width:36px;height:36px;border-radius:50%;flex-shrink:0;
    display:grid;place-items:center;font-size:14px;font-weight:600;
    background:rgba(16,60,52,.1);color:var(--pine-600);
  }
  .review-name{font-size:13px;font-weight:600;color:var(--ink);}
  .review-role{font-size:12px;color:var(--muted);}
  .review-tag{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:1px 8px;border-radius:999px;margin-left:auto;}

  /* ---------- download band ---------- */
  .download-band{background:var(--night);color:#fff;padding:96px 0;}
  .download-band h2{color:#fff;}
  .download-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
  .download-note{color:#C9D2CD;font-size:15px;line-height:1.8;margin-top:16px;max-width:400px;}
  .download-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:22px;
    font-size:14px;font-weight:600;color:#fff;border-bottom:1px solid rgba(255,255,255,.35);
    padding-bottom:3px;transition:color .2s ease,border-color .2s ease;
  }
  .download-link:hover{color:#F0B8A6;border-color:#F0B8A6;}
  .dl-rows{display:flex;flex-direction:column;gap:12px;}
  .dl-row{
    display:flex;align-items:center;gap:16px;
    min-height:68px;padding:12px 20px;border-radius:var(--radius-md);
    border:1px solid rgba(255,255,255,.18);
    transition:transform .2s ease,background .2s ease,border-color .2s ease;
  }
  .dl-row:hover{transform:translateX(4px);background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.34);}
  .dl-row.is-primary{background:var(--coral-600);border-color:var(--coral-600);}
  .dl-row.is-primary:hover{background:#A83A20;}
  .dl-icon{
    width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
    background:rgba(255,255,255,.12);flex-shrink:0;
  }
  .dl-icon svg{width:20px;height:20px;}
  .dl-main{flex:1;min-width:0;}
  .dl-name{font-size:15px;font-weight:600;line-height:1.4;}
  .dl-meta{font-size:12px;color:#B9C4BE;margin-top:2px;}
  .dl-row.is-primary .dl-meta{color:rgba(255,255,255,.82);}
  .dl-arrow{width:20px;height:20px;flex-shrink:0;transition:transform .2s ease;}
  .dl-row:hover .dl-arrow{transform:translateX(4px);}

  /* ---------- news ---------- */
  .news-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;margin-top:44px;align-items:start;}
  .news-feature{
    display:block;background:var(--paper-2);border:1px solid var(--line);
    border-radius:var(--radius-lg);overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  }
  .news-feature:hover{border-color:rgba(217,90,58,.35);box-shadow:var(--shadow-lift);transform:translateY(-3px);}
  .news-feature-img{aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
  .news-feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .news-feature:hover .news-feature-img img{transform:scale(1.04);}
  .news-feature-body{padding:24px;}
  .news-feature-body h3{margin:12px 0 0;font-size:22px;line-height:1.4;}
  .news-feature-body p{margin:10px 0 0;font-size:14px;color:var(--muted);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);margin-top:16px;}
  .news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
  .news-list{border-top:1px solid var(--line);}
  .news-item{
    display:block;padding:20px 4px;border-bottom:1px solid var(--line);
    transition:padding-left .2s ease;
  }
  .news-item:hover{padding-left:10px;}
  .news-item h4{margin:0;font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;letter-spacing:0;
    transition:color .2s ease;
    display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
  .news-item:hover h4{color:var(--coral-600);}
  .news-item p{margin:6px 0 0;font-size:14px;color:var(--muted);line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
  .news-empty{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    min-height:240px;border:1px dashed var(--line);border-radius:var(--radius-lg);
    background:var(--paper-2);text-align:center;gap:8px;padding:24px;
  }
  .news-empty svg{width:44px;height:44px;color:var(--line);}
  .news-empty strong{font-size:18px;font-weight:600;color:var(--ink);}
  .news-empty span{font-size:14px;color:var(--muted);}
  .news-all{display:flex;justify-content:flex-end;margin-top:20px;}

  /* ---------- faq ---------- */
  .faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
  .faq-sticky{position:sticky;top:104px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
    cursor:pointer;list-style:none;transition:color .2s ease,padding .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--coral-600);}
  .faq-icon{
    width:20px;height:20px;flex-shrink:0;position:relative;color:var(--pine-600);
    transition:transform .3s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-icon::before{width:14px;height:2px;}
  .faq-icon::after{width:2px;height:14px;transition:opacity .3s ease;}
  .faq-item[open] .faq-icon::after{opacity:0;}
  .faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--coral-600);}
  .faq-item[open] summary{color:var(--pine);}
  .faq-answer{
    font-size:15px;line-height:1.85;color:var(--muted);
    padding:0 0 22px 0;
    border-left:2px solid var(--coral);
    margin:0 0 6px 0;padding-left:16px;
    background:#FBF8F2;border-radius:0 12px 12px 0;
    padding-top:14px;padding-right:16px;
  }

  /* ---------- footer ---------- */
  .site-footer{background:var(--night);color:#C9D2CD;padding:72px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#F0B8A6;}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:#9BA8A2;max-width:320px;}
  .footer-contact{margin-top:20px;font-size:14px;line-height:2;color:#9BA8A2;}
  .footer-contact strong{color:#E6EBE8;font-weight:500;}
  .footer-col h3{font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    font-size:13px;font-weight:600;color:#fff;letter-spacing:0;margin:0 0 16px;}
  .footer-col a{display:block;font-size:14px;color:#C9D2CD;padding:6px 0;transition:color .2s ease;}
  .footer-col a:hover{color:var(--coral);}
  .footer-bottom{
    margin-top:56px;border-top:1px solid rgba(255,255,255,.1);
    padding:24px 0 32px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#889590;
  }
  .footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
  .footer-bottom-links a:hover{color:var(--coral);}

  /* ---------- drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(16,24,21,.5);z-index:70;
    opacity:0;pointer-events:none;transition:opacity .28s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:290px;z-index:80;
    background:#fff;padding:22px;display:flex;flex-direction:column;gap:20px;
    transform:translateX(100%);transition:transform .28s ease;
    box-shadow:-16px 0 40px rgba(0,0,0,.16);
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    display:grid;place-items:center;color:var(--pine);font-size:20px;line-height:1;
  }
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-nav a{
    font-size:17px;font-weight:500;color:var(--ink);padding:14px 4px;
    border-bottom:1px solid var(--line);transition:color .2s ease;
  }
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--coral-600);}
  .drawer-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:0 14px;background:var(--paper);}
  .drawer-search input{flex:1;height:42px;border:none;background:transparent;font-size:14px;outline:none;}

  /* ---------- sticky mobile cta ---------- */
  .mobile-cta{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:55;
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    box-shadow:0 -8px 24px rgba(16,60,52,.08);
  }
  .mobile-cta .btn{width:100%;height:46px;}

  .to-top{
    position:fixed;right:20px;bottom:24px;z-index:54;
    width:44px;height:44px;border-radius:50%;
    background:#fff;border:1px solid var(--line);color:var(--pine);
    display:grid;place-items:center;box-shadow:var(--shadow-card);
    opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;
  }
  .to-top.is-show{opacity:1;pointer-events:auto;}
  .to-top:hover{transform:translateY(-2px);background:var(--pine);color:#fff;}
  .to-top svg{width:18px;height:18px;}

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .container{padding:0 22px;}
    .nav-links{gap:22px;}
    .nav-search input{width:180px;}
  }
  @media (max-width:1023px){
    .nav-links,.nav-search{display:none;}
    .hamburger{display:flex;}
    .hero{padding:48px 0 72px;}
    .hero-grid{grid-template-columns:1fr;gap:44px;}
    .hero-visual{height:440px;}
    .device-phone{width:140px;height:280px;left:24px;}
    .device-tablet{width:210px;height:272px;right:0;top:60px;}
    .section{padding:72px 0;}
    .section-tight{padding:60px 0;}
    .bento{grid-template-columns:repeat(6,1fr);}
    .span-7,.span-5,.span-4,.span-3{grid-column:span 6;}
    .req-grid,.faq-grid,.download-grid,.news-grid{grid-template-columns:1fr;gap:36px;}
    .req-sticky,.faq-sticky{position:static;}
    .review-wall{columns:2;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .download-band{padding:72px 0;}
  }
  @media (max-width:767px){
    .nav-wrap{height:64px;gap:12px;}
    .brand-text{font-size:14px;}
    .nav-tools .btn{display:none;}
    h1.hero-title{font-size:36px;}
    .hero-sub{font-size:16px;}
    .hero-visual{height:380px;}
    .device-phone{width:124px;height:248px;left:18px;bottom:-16px;}
    .device-tablet{width:180px;height:232px;right:-6px;top:52px;}
    .tag-b{display:none;}
    .bento{grid-template-columns:1fr;}
    .span-7,.span-5,.span-4,.span-3{grid-column:span 1;}
    .shot{flex:0 0 280px;}
    .review-wall{columns:1;}
    .req-row{align-items:flex-start;flex-direction:column;gap:4px;}
    .req-row dd{text-align:left;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .mobile-cta{display:block;}
    body{padding-bottom:74px;}
    .to-top{bottom:86px;right:16px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  }

/* roulang page: article */
:root{
  --pine:#103C34;
  --pine-600:#1C5549;
  --coral:#D95A3A;
  --coral-600:#BF4528;
  --paper:#F6F2EA;
  --paper-2:#FCFAF6;
  --ink:#1B1F1D;
  --muted:#66706B;
  --line:#E4DED3;
  --sand:#C9A86A;
  --night:#101815;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --shadow-card:0 8px 24px rgba(16,60,52,.06);
  --shadow-lift:0 14px 36px rgba(16,60,52,.10);
  --container:1200px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper-2);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img,svg{display:block}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.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}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,60,52,.07)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--serif);
  font-size:18px;font-weight:700;letter-spacing:-.01em;
  color:var(--pine);white-space:nowrap;
}
.brand-mark{
  display:grid;place-items:center;
  width:32px;height:32px;border-radius:10px;
  background:var(--pine);color:#F4EFE5;flex:none;
}
.brand:hover .brand-mark{background:var(--pine-600)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;color:#3C4642;
  padding:6px 0;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--coral);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--pine)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--pine);font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  border-radius:999px;background:var(--paper);
  border:1px solid transparent;
  transition:background .2s,border-color .2s,box-shadow .2s;
}
.search-box:focus-within{background:#fff;border-color:var(--coral);box-shadow:0 0 0 3px rgba(217,90,58,.12)}
.search-box svg{flex:none;color:var(--muted)}
.search-box input{
  width:100%;border:0;background:transparent;outline:0;
  font-size:14px;color:var(--ink);line-height:1;
}
.search-box input::placeholder{color:#98A19C}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-md);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--coral-600);color:#fff;box-shadow:0 6px 16px rgba(191,69,40,.18)}
.btn-primary:hover{background:#A93A20;transform:translateY(-1px);box-shadow:var(--shadow-lift)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:var(--pine);border-color:rgba(16,60,52,.35)}
.btn-ghost:hover{background:var(--pine);color:#fff;border-color:var(--pine);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--pine);border-color:transparent}
.btn-light:hover{background:#F4EFE5;transform:translateY(-1px)}
.btn-pill{border-radius:999px;height:40px;padding:0 20px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-md);background:#fff;color:var(--pine);
}
.nav-toggle:hover{background:var(--paper)}

/* ============ Article ============ */
.page-wrap{padding:0 0 96px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:28px 0 0;font-size:13px;color:var(--muted);
}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--coral-600)}
.breadcrumb .sep{color:#C7C0B4}
.breadcrumb .current{color:var(--ink)}
.article-layout{max-width:860px;margin:0 auto}
.article-head{margin-top:22px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(16,60,52,.08);
  color:var(--pine);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-coral{background:rgba(217,90,58,.12);color:var(--coral-600)}
.article-head h1{
  font-family:var(--serif);
  font-size:clamp(28px,4vw,44px);
  line-height:1.22;letter-spacing:-.015em;
  color:var(--pine);margin:18px 0 0;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:20px;padding-bottom:24px;
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C7C0B4}
.article-meta strong{color:var(--ink);font-weight:600}
.article-cover{
  margin:32px 0 0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--paper);box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{
  max-width:760px;margin:44px auto 0;
  font-size:17px;line-height:1.9;color:#232826;
  overflow-wrap:break-word;
}
.article-body > * + *{margin-top:1.1em}
.article-body p{margin:0}
.article-body h2{
  font-family:var(--serif);
  font-size:clamp(22px,2.4vw,28px);line-height:1.4;
  color:var(--pine);font-weight:700;letter-spacing:-.01em;
  margin:2em 0 .7em;padding-left:14px;border-left:3px solid var(--coral);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--pine);margin:1.6em 0 .5em}
.article-body h4{font-size:17px;font-weight:600;color:var(--pine-600);margin:1.4em 0 .4em}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0}
.article-body li{margin:.4em 0}
.article-body a{color:var(--coral-600);border-bottom:1px solid rgba(191,69,40,.32);transition:border-color .2s}
.article-body a:hover{border-bottom-color:var(--coral-600)}
.article-body strong{font-weight:600;color:var(--pine)}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;
  background:#FBF8F2;border-left:3px solid var(--sand);
  border-radius:0 var(--radius-md) var(--radius-md) 0;color:#3C4642;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--radius-md);margin:1.5em auto;border:1px solid var(--line)}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;max-width:100%;border-collapse:collapse;
  font-size:15px;margin:1.5em 0;
}
.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(--paper);font-weight:600;color:var(--pine)}
.article-body tr:nth-child(even) td{background:#FDFBF7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{
  background:var(--paper);padding:2px 6px;border-radius:6px;
  font-size:.9em;color:var(--pine-600);
}
.article-body pre{
  background:var(--night);color:#E7EDEA;padding:18px 20px;
  border-radius:var(--radius-md);overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body iframe,.article-body video{max-width:100%;border-radius:var(--radius-md)}
.article-body .table-scroll{overflow-x:auto}

.article-foot{
  max-width:760px;margin:56px auto 0;padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;background:var(--paper);border:1px solid var(--line);
  font-size:12px;color:var(--muted);
}

/* empty */
.empty-state{
  max-width:640px;margin:64px auto 0;padding:56px 32px;text-align:center;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
  display:grid;place-items:center;background:var(--paper);color:var(--pine);
}
.empty-state h1{font-family:var(--serif);font-size:26px;color:var(--pine);margin:0 0 12px}
.empty-state p{font-size:15px;color:var(--muted);margin:0 0 26px}

/* ============ Related ============ */
.section-block{margin-top:88px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{font-family:var(--serif);font-size:clamp(24px,2.6vw,32px);color:var(--pine);letter-spacing:-.01em}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--coral-600)}
.link-more svg{transition:transform .2s}
.link-more:hover svg{transform:translateX(4px)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(217,90,58,.32)}
.entry-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--paper)}
.entry-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-card-body h3{font-size:18px;line-height:1.45;color:var(--pine);font-weight:600}
.entry-card-body p{font-size:14px;line-height:1.7;color:var(--muted)}
.entry-card:hover h3{color:var(--coral-600)}

/* ============ Download strip ============ */
.download-strip{
  margin-top:72px;padding:44px 44px;
  background:var(--pine);border-radius:20px;color:#fff;
  display:grid;grid-template-columns:1.25fr .9fr;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.download-strip::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 12%,rgba(201,168,106,.22),transparent 46%);
  pointer-events:none;
}
.download-strip h2{font-family:var(--serif);font-size:clamp(22px,2.4vw,30px);line-height:1.35;letter-spacing:-.01em}
.download-strip p{margin-top:12px;font-size:14px;line-height:1.8;color:#C9D2CD;max-width:460px}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:1}

/* ============ Footer ============ */
.site-footer{background:var(--night);color:#C9D2CD;padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px 32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:-.01em}
.footer-brand .brand-mark{background:rgba(255,255,255,.09);color:#F4EFE5}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#9FA9A4;max-width:320px}
.footer-contact{margin-top:20px;font-size:13px;line-height:2.05;color:#9FA9A4}
.footer-contact strong{color:#E4E9E6;font-weight:500}
.footer-col h3{font-size:13px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;font-size:14px;color:#C9D2CD;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--coral)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:14px 24px;justify-content:space-between;
  font-size:13px;color:#8B9591;
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom-links a:hover{color:var(--coral)}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .header-inner{height:64px;gap:14px}
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 24px 26px;background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 32px rgba(16,60,52,.10);
    z-index:55;max-height:calc(100vh - 64px);overflow-y:auto;
  }
  .nav-links.is-open{display:flex}
  .nav-link{width:100%;font-size:17px;padding:15px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--coral-600)}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 28px}
  .download-strip{grid-template-columns:1fr;padding:36px 28px}
  .download-actions{justify-content:flex-start}
}
@media (max-width:760px){
  .container{padding:0 20px}
  .breadcrumb{padding-top:20px}
  .article-head h1{font-size:clamp(26px,6.4vw,34px)}
  .article-body{font-size:16.5px;line-height:1.9;margin-top:34px}
  .article-cover{margin-top:24px;border-radius:var(--radius-md)}
  .section-block{margin-top:64px}
  .card-grid{grid-template-columns:1fr}
  .article-foot{margin-top:44px}
  .site-footer{padding:56px 0 24px;margin-top:72px}
}
@media (max-width:640px){
  .header-cta{display:none}
  .brand{font-size:15px}
  .brand-mark{width:30px;height:30px;border-radius:9px}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .download-strip{padding:30px 22px}
  .download-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .empty-state{padding:40px 22px;margin-top:44px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --pine:#103C34;
  --pine-600:#1C5549;
  --coral:#D95A3A;
  --coral-600:#BF4528;
  --paper:#F6F2EA;
  --paper-2:#FCFAF6;
  --paper-3:#EFEAE0;
  --ink:#1B1F1D;
  --muted:#66706B;
  --line:#E4DED3;
  --sand:#C9A86A;
  --night:#101815;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --shadow-card:0 8px 24px rgba(16,60,52,.06);
  --shadow-lift:0 14px 36px rgba(16,60,52,.10);
  --container:1200px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::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:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--coral-600);color:#fff;box-shadow:0 6px 18px rgba(191,69,40,.20);}
.btn-primary:hover{background:var(--coral);transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--pine);border:1px solid var(--pine);}
.btn-ghost:hover{background:var(--pine);color:#fff;}
.btn-ghost:active{transform:scale(.99);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:999px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--pine);
  transition:color .2s ease;
}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover{color:var(--coral);}
.link-arrow:hover span{transform:translateX(4px);}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-coral{background:rgba(217,90,58,.12);color:var(--coral-600);}
.badge-pine{background:rgba(16,60,52,.08);color:var(--pine);}
.badge-sand{background:rgba(201,168,106,.16);color:#8a6f36;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-card);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--pine);white-space:nowrap;letter-spacing:-0.01em;}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(16,60,52,.07);color:var(--pine);
}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{
  position:relative;padding:6px 0;
  font-size:15px;font-weight:500;color:#3B4642;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:var(--coral);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--pine);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--pine);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  border-radius:999px;background:var(--paper);
  border:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--coral);box-shadow:0 0 0 3px rgba(217,90,58,.14);}
.search-box svg{flex:0 0 16px;color:var(--muted);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:#98A19C;}
.header-cta{height:40px;padding:0 20px;border-radius:999px;font-size:15px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-md);
  align-items:center;justify-content:center;color:var(--pine);
  border:1px solid var(--line);background:#fff;
}
.nav-toggle:hover{background:var(--paper);}

/* 移动端抽屉 */
.mobile-overlay{
  position:fixed;inset:0;background:rgba(16,24,21,.42);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:70;
}
.mobile-overlay.is-open{opacity:1;pointer-events:auto;}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:#fff;z-index:80;padding:22px 22px 32px;
  transform:translateX(104%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(16,24,21,.14);
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.mobile-panel .brand{font-size:15px;}
.mobile-close{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:var(--pine);border:1px solid var(--line);
}
.mobile-panel a.m-link{
  padding:14px 4px;font-size:17px;font-weight:500;color:#2C3632;
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-link.is-active{color:var(--coral-600);font-weight:600;}
.mobile-panel .btn{margin-top:18px;width:100%;height:48px;border-radius:var(--radius-md);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
  padding:22px 0 72px;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  opacity:.09;pointer-events:none;
}
.hero-inner{position:relative;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding:0 0 28px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--coral-600);}
.breadcrumb .sep{color:#B6BDB9;}
.breadcrumb .current{color:var(--ink);}
.hero-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:52px;align-items:start;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--pine-600);
  padding:6px 14px;border-radius:999px;
  background:rgba(16,60,52,.06);border:1px solid rgba(16,60,52,.10);
}
.hero-copy h1{
  font-family:var(--font-serif);
  font-size:clamp(34px,4.4vw,54px);
  line-height:1.12;font-weight:700;letter-spacing:-0.02em;
  color:var(--pine);margin:20px 0 18px;
}
.hero-copy h1 .hl{
  position:relative;white-space:nowrap;
}
.hero-copy h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:6px;
  background:rgba(217,90,58,.28);border-radius:3px;z-index:-1;
}
.hero-lead{
  font-size:18px;line-height:1.7;color:#45514C;max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-actions .btn{height:52px;padding:0 28px;font-size:16px;}
.hero-note{
  margin-top:20px;font-size:13px;line-height:1.7;color:var(--muted);
  padding-top:16px;border-top:1px dashed var(--line);max-width:560px;
}

/* 下载卡 */
.download-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:24px;
  transition:box-shadow .25s ease,transform .25s ease;
}
.download-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);}
.download-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.version-num{
  font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--pine);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.download-cover{
  margin:18px 0;border-radius:var(--radius-md);overflow:hidden;
  border:1px solid var(--line);background:#fff;
}
.download-cover img{width:100%;height:auto;object-fit:cover;}
.download-facts{
  display:grid;grid-template-columns:1fr;gap:0;
  border-top:1px solid var(--line);margin-bottom:20px;
}
.download-facts > div{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 0;border-bottom:1px solid var(--line);
}
.download-facts dt{font-size:13px;color:var(--muted);}
.download-facts dd{font-size:14px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.download-card .link-arrow{margin-top:14px;font-size:13px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--paper{background:var(--paper-3);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:40px;
  margin-bottom:44px;flex-wrap:wrap;
}
.section-index{
  display:block;font-family:var(--font-serif);
  font-size:14px;font-weight:700;color:var(--sand);
  letter-spacing:.08em;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,2.8vw,36px);line-height:1.24;font-weight:700;
  letter-spacing:-0.02em;color:var(--pine);
}
.section-sub{
  max-width:420px;font-size:14px;line-height:1.8;color:var(--muted);
}

/* 平台卡 */
.platform-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:28px;align-items:stretch;}
.platform-card{
  display:flex;flex-direction:column;
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.platform-card:hover{border-color:rgba(217,90,58,.35);box-shadow:var(--shadow-lift);transform:translateY(-2px);}
.platform-card h3{
  font-family:var(--font-serif);font-size:22px;font-weight:700;
  color:var(--pine);margin:14px 0 8px;letter-spacing:-0.01em;
}
.platform-desc{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:20px;}
.spec-list{
  display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;
  padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-bottom:22px;
}
.spec-list > div{display:flex;flex-direction:column;gap:2px;}
.spec-list dt{font-size:12px;color:var(--muted);}
.spec-list dd{font-size:14px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.platform-card .btn{margin-top:auto;align-self:flex-start;}
.platform-card--primary{background:#fff;border-color:rgba(16,60,52,.16);}

/* 系统要求 */
.req-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.req-side{position:sticky;top:104px;}
.req-side h2{
  font-family:var(--font-serif);font-size:clamp(26px,2.6vw,34px);
  line-height:1.24;font-weight:700;color:var(--pine);letter-spacing:-0.02em;margin-bottom:14px;
}
.req-side p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:24px;}
.req-list{border-top:1px solid var(--line);}
.req-row{
  display:grid;grid-template-columns:150px 1fr auto;align-items:center;gap:20px;
  padding:18px 4px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease;
}
.req-row:hover{background:rgba(252,250,246,.9);}
.req-row dt{font-size:14px;color:var(--muted);}
.req-row dd{font-size:15px;color:var(--ink);line-height:1.7;}
.req-row .req-tag{font-size:12px;font-weight:600;color:var(--coral-600);background:rgba(217,90,58,.10);padding:3px 10px;border-radius:999px;white-space:nowrap;}

/* 更新日志时间线 */
.timeline-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:56px;align-items:start;}
.timeline-visual{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);background:#fff;
}
.timeline-visual img{width:100%;height:100%;object-fit:cover;}
.timeline{position:relative;padding-left:30px;}
.timeline::before{
  content:"";position:absolute;left:6px;top:10px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--line) 0%,rgba(228,222,211,0) 100%);
}
.timeline-item{position:relative;padding-bottom:32px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:14px;height:14px;
  border-radius:50%;background:#fff;border:2px solid var(--sand);
}
.timeline-item:first-child::before{background:var(--coral);border-color:var(--coral);}
.timeline-date{
  font-size:12px;font-weight:600;color:var(--sand);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.timeline-item h3{
  font-size:18px;font-weight:600;color:var(--pine);margin:6px 0 8px;
}
.timeline-item p{font-size:14px;line-height:1.8;color:var(--muted);}
.timeline-item ul{margin-top:10px;display:grid;gap:6px;}
.timeline-item li{
  position:relative;padding-left:16px;
  font-size:14px;line-height:1.75;color:#4C5752;
}
.timeline-item li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;
  border-radius:50%;background:var(--sand);
}

/* 下载前须知 */
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.tip-card{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.tip-card:hover{border-color:rgba(217,90,58,.32);box-shadow:var(--shadow-lift);transform:translateY(-2px);}
.tip-num{
  font-family:var(--font-serif);font-size:14px;font-weight:700;color:var(--sand);
  letter-spacing:.08em;font-variant-numeric:tabular-nums;
}
.tip-card h3{font-size:18px;font-weight:600;color:var(--pine);margin:10px 0 8px;}
.tip-card p{font-size:14px;line-height:1.8;color:var(--muted);}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-side{position:sticky;top:104px;}
.faq-side h2{
  font-family:var(--font-serif);font-size:clamp(26px,2.6vw,34px);
  line-height:1.24;font-weight:700;color:var(--pine);letter-spacing:-0.02em;margin-bottom:14px;
}
.faq-side p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:18px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:0 22px;
  transition:background-color .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.faq-item[open]{background:#FBF8F2;border-color:rgba(217,90,58,.30);border-left:2px solid var(--coral);box-shadow:var(--shadow-card);}
.faq-item summary{
  display:flex;align-items:center;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;margin-left:auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--pine);border-radius:2px;
  transition:transform .3s ease,background-color .3s ease;
}
.faq-icon::before{left:0;right:0;top:7px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-item[open] .faq-icon::before{background:var(--coral-600);}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-answer p + p{margin-top:10px;}

/* 深色下载 CTA */
.cta-band{background:var(--night);color:#fff;padding:88px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center;}
.cta-band h2{
  font-family:var(--font-serif);font-size:clamp(28px,3vw,40px);
  line-height:1.2;font-weight:700;letter-spacing:-0.02em;color:#fff;margin-bottom:16px;
}
.cta-band p{font-size:15px;line-height:1.85;color:#C9D2CD;max-width:420px;}
.cta-band .cta-links{margin-top:22px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;}
.cta-band .cta-links a.underline{
  font-size:14px;color:#C9D2CD;border-bottom:1px solid rgba(201,210,205,.5);
  padding-bottom:2px;transition:color .2s ease,border-color .2s ease;
}
.cta-band .cta-links a.underline:hover{color:var(--coral);border-color:var(--coral);}
.dl-rows{display:grid;gap:12px;}
.dl-row{
  display:flex;align-items:center;gap:16px;
  padding:16px 20px;border-radius:var(--radius-md);
  border:1px solid rgba(255,255,255,.16);
  transition:transform .2s ease,border-color .2s ease,background-color .2s ease;
}
.dl-row:hover{transform:translateX(4px);border-color:rgba(255,255,255,.36);background:rgba(255,255,255,.04);}
.dl-row.is-primary{background:var(--coral-600);border-color:var(--coral-600);}
.dl-row.is-primary:hover{background:var(--coral);border-color:var(--coral);}
.dl-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  display:grid;place-items:center;background:rgba(255,255,255,.10);color:#fff;
}
.dl-row.is-primary .dl-icon{background:rgba(255,255,255,.18);}
.dl-meta{display:flex;flex-direction:column;gap:2px;}
.dl-meta strong{font-size:15px;font-weight:600;color:#fff;}
.dl-meta span{font-size:12px;color:rgba(255,255,255,.72);font-variant-numeric:tabular-nums;}
.dl-arrow{margin-left:auto;color:#fff;transition:transform .2s ease;}
.dl-row:hover .dl-arrow{transform:translateX(4px);}

/* ---------- Footer ---------- */
.site-footer{background:var(--night);color:#C9D2CD;padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;white-space:nowrap;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.09);color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FA9A4;max-width:320px;margin-bottom:20px;}
.footer-contact div{font-size:13px;line-height:1.9;color:#8F9A95;}
.footer-contact strong{color:#E6EBE8;font-weight:600;}
.footer-col h3{font-size:13px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.01em;}
.footer-col a{
  display:block;font-size:14px;color:#C9D2CD;padding:6px 0;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--coral);}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A948F;
}
.footer-bottom-links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-bottom-links a{color:#8A948F;transition:color .2s ease;}
.footer-bottom-links a:hover{color:var(--coral);}

/* 移动端吸底下载条 */
.mobile-dl-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:55;
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 24px rgba(16,60,52,.08);
  align-items:center;gap:12px;
}
.mobile-dl-bar .m-info{display:flex;flex-direction:column;line-height:1.5;}
.mobile-dl-bar .m-info strong{font-size:13px;color:var(--pine);font-weight:600;}
.mobile-dl-bar .m-info span{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;}
.mobile-dl-bar .btn{margin-left:auto;height:42px;padding:0 20px;font-size:14px;border-radius:999px;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .header-inner{gap:20px;}
  .nav-links{gap:22px;}
  .search-box{width:180px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .download-card{max-width:520px;}
  .platform-grid{grid-template-columns:1fr;gap:20px;}
  .req-wrap,.faq-wrap{grid-template-columns:1fr;gap:32px;}
  .req-side,.faq-side{position:static;}
  .timeline-grid{grid-template-columns:1fr;gap:32px;}
  .tips-grid{grid-template-columns:1fr 1fr;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .header-cta{display:none;}
  .section{padding:56px 0;}
  .page-hero{padding:16px 0 52px;}
  .hero-copy h1{font-size:clamp(30px,7vw,40px);}
  .hero-lead{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .download-card{max-width:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .section-sub{max-width:none;}
  .req-row{grid-template-columns:1fr;gap:4px;padding:16px 2px;}
  .req-row .req-tag{justify-self:start;margin-top:4px;}
  .tips-grid{grid-template-columns:1fr;}
  .spec-list{grid-template-columns:1fr 1fr;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .mobile-dl-bar{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .brand{font-size:14px;}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;}
  .spec-list{grid-template-columns:1fr;}
  .faq-item{padding:0 16px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .dl-row{padding:14px 16px;gap:12px;}
  .dl-meta strong{font-size:14px;}
  .platform-card{padding:22px;}
  .download-card{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --pine:#103C34;
  --pine-600:#1C5549;
  --coral:#D95A3A;
  --coral-600:#BF4528;
  --paper:#F6F2EA;
  --paper-2:#FCFAF6;
  --ink:#1B1F1D;
  --muted:#66706B;
  --line:#E4DED3;
  --sand:#C9A86A;
  --night:#101815;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --shadow-card:0 8px 24px rgba(16,60,52,.06);
  --shadow-lift:0 14px 36px rgba(16,60,52,.10);
  --container:1200px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
p{margin:0}
[hidden]{display:none}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
h1,h2,h3{font-family:var(--font-serif);letter-spacing:-.015em;margin:0;line-height:1.2}
h1{font-size:clamp(34px,4.6vw,56px);font-weight:700;line-height:1.1}
h2{font-size:clamp(26px,3vw,38px);font-weight:700}
h3{font-size:20px;font-weight:600;line-height:1.4}
.lead{font-size:19px;line-height:1.7;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--pine-600);
  background:rgba(16,60,52,.07);
  border:1px solid rgba(16,60,52,.10);
  border-radius:999px;
  padding:5px 12px;
  line-height:1.4;
}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.8}
.muted{color:var(--muted)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(10px);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,60,52,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--pine);letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(16,60,52,.08);color:var(--pine);
}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--muted);
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  border-radius:2px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--pine)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--pine);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:10px}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:212px;padding:0 14px;
  background:#F4EFE6;border:1px solid transparent;border-radius:999px;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box svg{flex:0 0 16px;color:var(--muted)}
.search-box input{border:0;background:transparent;outline:none;font-size:14px;width:100%;color:var(--ink)}
.search-box input::placeholder{color:#9AA29D}
.search-box:focus-within{background:#fff;border-color:var(--coral);box-shadow:0 0 0 3px rgba(217,90,58,.15)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--pine)}
.mobile-drawer{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:55;
  background:#fff;border-top:1px solid var(--line);
  padding:20px 24px 32px;overflow-y:auto;
  display:flex;flex-direction:column;gap:4px;
}
.mobile-drawer[hidden]{display:none}
.mobile-drawer .d-link{
  display:block;font-size:17px;font-weight:600;color:var(--ink);
  padding:15px 4px;border-bottom:1px solid var(--line);
}
.mobile-drawer .d-link.is-active{color:var(--coral)}
.mobile-drawer .btn{margin-top:20px}
body.drawer-open{overflow:hidden}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-pill{border-radius:999px;height:40px;padding:0 20px}
.btn-primary{background:var(--coral-600);color:#fff;box-shadow:0 4px 14px rgba(191,69,40,.22)}
.btn-primary:hover{background:#A73A20;transform:translateY(-1px);box-shadow:var(--shadow-lift)}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:none}
.btn-ghost{background:transparent;color:var(--pine);border-color:rgba(16,60,52,.35)}
.btn-ghost:hover{background:var(--pine);color:#fff;border-color:var(--pine)}
.btn-ghost:active{transform:scale(.99)}
.btn-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:#fff;color:var(--pine);transform:translateY(-1px)}
.btn:focus-visible,.nav-link:focus-visible,.foot-link:focus-visible,
.search-box:focus-within,.faq-item summary:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.btn-lg{height:52px;padding:0 28px;font-size:15px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--coral-600);
}
.text-link svg{transition:transform .2s ease}
.text-link:hover svg{transform:translateX(4px)}
.text-link.pine{color:var(--pine)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  padding:64px 0 80px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(252,250,246,.97) 0%,rgba(252,250,246,.90) 48%,rgba(252,250,246,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  opacity:.98;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-copy .eyebrow{margin-bottom:20px}
.hero-copy h1{margin-bottom:20px;max-width:15em}
.hero-copy h1 .accent{color:var(--coral-600);box-shadow:inset 0 -8px 0 rgba(217,90,58,.16)}
.hero-copy .lead{max-width:34em;margin-bottom:14px}
.hero-note{font-size:13px;color:var(--muted);margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-lift);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-badge{
  position:absolute;display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 14px;font-size:13px;font-weight:600;color:var(--pine);
  box-shadow:var(--shadow-card);
}
.hero-badge.b1{left:-14px;top:26px;animation:floaty 6s ease-in-out infinite alternate}
.hero-badge.b2{right:-10px;bottom:34px;animation:floaty 6s ease-in-out .8s infinite alternate}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--coral)}
.hero-index{
  position:absolute;right:18px;top:-28px;
  font-family:var(--font-serif);font-size:76px;font-weight:700;
  color:rgba(16,60,52,.07);line-height:1;user-select:none;
}
@keyframes floaty{from{transform:translateY(0)}to{transform:translateY(-8px)}}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px;
  position:relative;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  min-height:190px;
  display:flex;flex-direction:column;
}
.bento-card:hover{border-color:rgba(217,90,58,.35);box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.bento-card .icon-wrap{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(16,60,52,.08);color:var(--pine-600);
  margin-bottom:18px;transition:background .2s ease,color .2s ease;
}
.bento-card:hover .icon-wrap{background:rgba(217,90,58,.12);color:var(--coral-600)}
.bento-card .num{
  position:absolute;right:26px;top:24px;
  font-family:var(--font-serif);font-size:14px;font-weight:700;
  color:var(--sand);letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
.bento-card h3{margin-bottom:10px;font-size:21px}
.bento-card p{font-size:14px;line-height:1.75;color:var(--muted)}
.span-7{grid-column:span 7}
.span-5{grid-column:span 5}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-12{grid-column:span 12}
.bento-card.feature{
  background:linear-gradient(180deg,#fff 0%,var(--paper-2) 100%);
  border-color:rgba(16,60,52,.14);
}
.bento-card.feature h3{font-size:24px}
.bento-card .inline-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:18px}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;line-height:1.4;
  padding:4px 10px;border-radius:999px;
  background:rgba(16,60,52,.07);color:var(--pine-600);
  border:1px solid rgba(16,60,52,.08);
}
.tag.coral{background:rgba(217,90,58,.10);color:var(--coral-600);border-color:rgba(217,90,58,.16)}

/* ---------- Carousel ---------- */
.shots{background:#EFEAE0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.shots-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.shots-head p{margin-top:12px;font-size:15px;color:var(--muted);max-width:36em}
.shot-nav{display:flex;gap:10px}
.shot-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(16,60,52,.25);background:#fff;color:var(--pine);
  display:grid;place-items:center;
  transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.shot-btn:hover{background:var(--pine);color:#fff;border-color:var(--pine);transform:translateY(-1px)}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 18px;
  scrollbar-width:thin;
}
.shot-card{
  flex:0 0 340px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.shot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-card .shot-body{padding:18px 20px 22px}
.shot-card h3{font-size:17px;margin-bottom:6px}
.shot-card p{font-size:13px;color:var(--muted);line-height:1.7}
.shot-dots{display:flex;align-items:center;gap:8px;margin-top:6px}
.shot-dot{
  width:6px;height:6px;border-radius:999px;background:rgba(16,60,52,.22);
  transition:width .25s ease,background .25s ease;padding:0;border:0;
}
.shot-dot.is-active{width:24px;background:var(--coral)}
.shot-foot{font-size:13px;color:var(--muted);margin-top:12px}

/* ---------- Scenes ---------- */
.scene-row{
  display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:center;
  padding:36px 0;border-top:1px solid var(--line);
}
.scene-row:last-child{border-bottom:1px solid var(--line)}
.scene-no{
  font-family:var(--font-serif);font-size:14px;font-weight:700;
  color:var(--sand);letter-spacing:.06em;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.scene-row h3{font-size:23px;margin-bottom:10px}
.scene-row p{font-size:15px;line-height:1.85;color:var(--muted);max-width:46em}
.scene-row ul{margin:14px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.scene-row ul li{font-size:13px;color:var(--pine-600);background:rgba(16,60,52,.07);border-radius:999px;padding:4px 12px}
.scene-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}

/* ---------- Stats ---------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:40px;
}
.stat-cell{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;
}
.stat-cell .stat-num{
  font-family:var(--font-serif);font-size:36px;font-weight:700;
  color:var(--pine);line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-cell .stat-num small{font-size:15px;font-weight:600;color:var(--coral-600);margin-left:4px}
.stat-cell p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside p{margin:16px 0 20px;font-size:14px;color:var(--muted);line-height:1.8}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:0 22px;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
  font-family:var(--font-serif);letter-spacing:-.01em;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .plus{
  flex:0 0 20px;width:20px;height:20px;position:relative;color:var(--pine-600);
  transition:transform .3s ease;
}
.faq-item .plus::before,.faq-item .plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-item .plus::before{left:0;right:0;top:9px;height:2px}
.faq-item .plus::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .3s ease}
.faq-item[open]{background:#FBF8F2;border-color:rgba(217,90,58,.28);box-shadow:var(--shadow-card)}
.faq-item[open] .plus{transform:rotate(180deg)}
.faq-item[open] .plus::after{opacity:0}
.faq-item .faq-answer{
  padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted);
  border-top:1px dashed var(--line);padding-top:16px;
}

/* ---------- CTA ---------- */
.cta-band{background:var(--pine);color:#fff;padding:88px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 20%,rgba(201,168,106,.16),transparent 46%),
                   radial-gradient(circle at 10% 90%,rgba(217,90,58,.18),transparent 42%);
}
.cta-band .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.cta-grid h2{color:#fff;margin-bottom:16px}
.cta-grid p{color:#C9D2CD;font-size:15px;line-height:1.85;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-list{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.cta-list li{
  list-style:none;display:flex;align-items:center;gap:10px;
  font-size:14px;color:#D5DDD8;
}
.cta-list li svg{flex:0 0 18px;color:var(--sand)}

/* ---------- Footer ---------- */
.site-footer{background:var(--night);color:#C9D2CD;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:#9AA8A2;max-width:330px;margin:0 0 20px}
.footer-contact{font-size:13px;line-height:2;color:#9AA8A2}
.footer-contact strong{color:#E6EDE9;font-weight:600}
.footer-col h3{font-size:13px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.02em;font-family:var(--font-sans)}
.footer-col a{display:block;font-size:14px;color:#C9D2CD;padding:6px 0;transition:color .2s ease}
.footer-col a:hover{color:var(--coral)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  margin-top:48px;padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8D9A94;
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{transition:color .2s ease}
.footer-bottom-links a:hover{color:var(--coral)}

/* ---------- Sticky mobile bar ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 18px;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(16,60,52,.08);
}
.mobile-cta span{font-size:13px;font-weight:600;color:var(--pine)}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .search-box{width:170px}
  .nav-links{gap:20px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-actions{margin-left:auto}
  .header-inner{height:64px}
  .page-hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2;max-width:520px}
  .bento{grid-template-columns:repeat(6,1fr)}
  .span-7,.span-5,.span-4,.span-6{grid-column:span 6}
  .scene-row{grid-template-columns:1fr;gap:22px}
  .scene-figure{max-width:420px}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  h1{font-size:clamp(28px,7.4vw,36px)}
  .lead{font-size:16px}
  .hero-badge{display:none}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{margin-bottom:32px}
  .bento{grid-template-columns:1fr;gap:18px}
  .span-7,.span-5,.span-4,.span-6{grid-column:span 1}
  .bento-card{min-height:0;padding:24px}
  .shot-card{flex:0 0 272px}
  .stats-strip{grid-template-columns:1fr;gap:16px}
  .hero-cta .btn{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding-top:52px}
  .cta-band{padding:60px 0}
  .mobile-cta{display:flex}
  body{padding-bottom:68px}
  .faq-item summary{font-size:16px;padding:18px 0}
}
@media (max-width:520px){
  .brand{font-size:14px;gap:8px}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:9px}
  .shot-card{flex:0 0 250px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category3 */
:root{
  --pine:#103C34;
  --pine-600:#1C5549;
  --pine-700:#0B2C26;
  --coral:#D95A3A;
  --coral-600:#BF4528;
  --coral-700:#A63A20;
  --paper:#F6F2EA;
  --paper-2:#FCFAF6;
  --paper-3:#EFEAE0;
  --ink:#1B1F1D;
  --muted:#66706B;
  --line:#E4DED3;
  --sand:#C9A86A;
  --night:#101815;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --shadow-card:0 8px 24px rgba(16,60,52,.06);
  --shadow-lift:0 14px 36px rgba(16,60,52,.10);
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.site-body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper-2);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.serif{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,60,52,.07);}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--pine);
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
  flex-shrink:0;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:10px;
  background:var(--pine);
  color:#F6F2EA;
  display:inline-grid;
  place-items:center;
  flex-shrink:0;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  padding:6px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:var(--coral);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--pine);}
.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--pine);font-weight:600;}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:40px;
  padding:0 14px;
  border-radius:999px;
  background:var(--paper);
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
  color:var(--muted);
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--coral);
  box-shadow:0 0 0 3px rgba(217,90,58,.14);
}
.search-box input{
  border:0;
  background:transparent;
  outline:none;
  width:100%;
  font-size:14px;
  color:var(--ink);
  font-family:inherit;
}
.search-box input::placeholder{color:#9AA49F;}
.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  color:var(--pine);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.menu-toggle:hover{border-color:var(--coral);background:var(--paper);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--coral-600);
  color:#fff;
  box-shadow:0 6px 16px rgba(191,69,40,.18);
}
.btn-primary:hover{background:var(--coral-700);transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:0 4px 10px rgba(191,69,40,.18);}
.btn-ghost{
  background:transparent;
  color:var(--pine);
  border-color:rgba(16,60,52,.35);
}
.btn-ghost:hover{background:var(--pine);color:#fff;border-color:var(--pine);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0) scale(.99);}
.btn-sm{height:40px;padding:0 20px;border-radius:999px;font-size:14px;}
.btn-light{
  background:#fff;
  color:var(--pine);
  border-color:transparent;
}
.btn-light:hover{background:var(--paper);transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-outline-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.35);
}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--coral-600);
  transition:color .2s ease;
}
.link-arrow svg{transition:transform .2s ease;}
.link-arrow:hover{color:var(--coral-700);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:72px 0 68px;
  background-image:linear-gradient(rgba(246,242,234,.94),rgba(246,242,234,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-120px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(16,60,52,.08);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(16,60,52,.08);
  color:var(--pine);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--coral);
}
.hero-title{
  margin-top:20px;
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  font-size:clamp(34px,4.4vw,52px);
  line-height:1.14;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--pine);
}
.hero-title .hl{
  background-image:linear-gradient(transparent 68%,rgba(217,90,58,.28) 68%);
  background-repeat:no-repeat;
  background-size:100% 100%;
}
.hero-lead{
  margin-top:20px;
  max-width:36em;
  font-size:18px;
  line-height:1.75;
  color:var(--muted);
}
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-meta{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--muted);
}
.hero-meta li{display:flex;align-items:center;gap:7px;}
.hero-meta svg{color:var(--pine-600);flex-shrink:0;}
.hero-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:18px;
}
.hero-card figure{margin:0;}
.hero-card img{
  width:100%;
  height:auto;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
}
.hero-card figcaption{
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
}
.hero-stats{
  margin-top:16px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.hero-stats dt{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.02em;
}
.hero-stats dd{
  margin:2px 0 0;
  font-size:19px;
  font-weight:700;
  color:var(--pine);
  font-variant-numeric:tabular-nums;
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
}

/* ---------- Section base ---------- */
.section{padding:88px 0;}
.section-tight{padding:72px 0;}
.section-band{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;}
.section-label{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--coral-600);
  letter-spacing:.08em;
  margin-bottom:12px;
}
.section-title{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  font-size:clamp(26px,3vw,36px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.015em;
  color:var(--pine);
}
.section-desc{
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

/* ---------- Guide layout ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:262px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.guide-index{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:20px 16px;
  box-shadow:var(--shadow-card);
}
.index-title{
  font-size:12px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.08em;
  padding:0 8px 12px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.index-link{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:11px 10px;
  border-radius:10px;
  font-size:14px;
  line-height:1.5;
  color:var(--muted);
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;
  border-left:2px solid transparent;
}
.index-link span{
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
  font-size:13px;
  color:var(--sand);
  font-variant-numeric:tabular-nums;
  padding-top:1px;
}
.index-link:hover{background:var(--paper-2);color:var(--pine);}
.index-link.is-active{
  background:var(--paper);
  color:var(--pine);
  font-weight:600;
  border-left-color:var(--coral);
}
.index-link.is-active span{color:var(--coral-600);}
.index-note{
  margin-top:16px;
  padding:14px;
  border-radius:10px;
  background:var(--paper-2);
  border:1px dashed var(--line);
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.index-note strong{color:var(--pine);font-weight:600;}

.step-stack{display:flex;flex-direction:column;gap:24px;}
.step-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:30px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,border-color .25s ease;
  scroll-margin-top:100px;
}
.step-card:hover{
  box-shadow:var(--shadow-lift);
  border-color:rgba(217,90,58,.28);
}
.step-head{
  display:flex;
  align-items:baseline;
  gap:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.step-num{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:32px;
  line-height:1;
  font-weight:700;
  color:var(--sand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.step-title{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:22px;
  line-height:1.35;
  font-weight:700;
  color:var(--pine);
  letter-spacing:-.01em;
}
.step-text{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:#39433F;
}
.step-list{
  margin-top:16px;
  display:grid;
  gap:9px;
}
.step-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}
.step-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:9px;
  width:8px;
  height:8px;
  border-radius:50%;
  border:1.5px solid var(--pine-600);
  opacity:.7;
}
.step-figure{margin-top:20px;}
.step-figure img{
  width:100%;
  height:auto;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:var(--paper-3);
}
.step-figure figcaption{
  margin-top:10px;
  font-size:12.5px;
  color:var(--muted);
}
.tip{
  margin-top:20px;
  display:flex;
  gap:12px;
  padding:15px 18px;
  border-radius:var(--radius-md);
  background:#FBF8F2;
  border-left:2px solid var(--coral);
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}
.tip strong{
  color:var(--pine);
  font-weight:600;
  flex-shrink:0;
}

/* ---------- Pitfalls ---------- */
.pitfall-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.pitfall-list{display:grid;gap:14px;}
.pitfall-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pitfall-item:hover{
  border-color:rgba(217,90,58,.3);
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.pitfall-icon{
  flex-shrink:0;
  width:32px;height:32px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(217,90,58,.1);
  color:var(--coral-600);
}
.pitfall-item h3{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:4px;
}
.pitfall-item p{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- Checklist ---------- */
.checklist-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
}
.checklist-grid{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px 28px;
}
.checklist-item{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  line-height:1.7;
  color:#39433F;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
}
.checklist-item svg{flex-shrink:0;color:var(--pine-600);margin-top:3px;}
.checklist-note{
  margin-top:22px;
  font-size:13.5px;
  color:var(--muted);
}
.checklist-note a{color:var(--coral-600);font-weight:600;border-bottom:1px solid rgba(217,90,58,.35);}
.checklist-note a:hover{color:var(--coral-700);}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.faq-aside{position:sticky;top:96px;}
.faq-aside .section-desc{margin-bottom:18px;}
.faq-list{
  display:grid;
  gap:12px;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:border-color .25s ease,background-color .25s ease,box-shadow .25s ease;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--pine);}
.faq-item summary:focus-visible{outline:2px solid var(--coral);outline-offset:-2px;}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex:0 0 18px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--pine);
  border-radius:2px;
  transition:transform .3s ease,opacity .3s ease,background-color .3s ease;
}
.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]{
  background:#FBF8F2;
  border-color:rgba(217,90,58,.28);
  box-shadow:var(--shadow-card);
}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] .faq-icon::before{background:var(--coral-600);}
.faq-answer{
  padding:0 22px 22px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}
.faq-answer p+p{margin-top:10px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--night);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-120px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.06);
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,6fr);
  gap:48px;
  align-items:center;
}
.cta-title{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:clamp(26px,3vw,36px);
  line-height:1.25;
  font-weight:700;
  color:#fff;
  letter-spacing:-.015em;
}
.cta-desc{
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:#C9D2CD;
  max-width:34em;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:flex-end;
}
.cta-footnote{
  margin-top:16px;
  font-size:13px;
  color:#8B9A94;
  text-align:right;
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--night);
  color:#C9D2CD;
  padding:72px 0 0;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.1);
  color:#F6F2EA;
}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:#9FAEA8;
  max-width:34ch;
}
.footer-contact{
  margin-top:18px;
  font-size:13px;
  line-height:1.95;
  color:#8B9A94;
}
.footer-contact strong{color:#E6ECE9;font-weight:500;}
.footer-col h3{
  color:#fff;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:#C9D2CD;
  padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--coral);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8B9A94;
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{transition:color .2s ease;}
.footer-bottom-links a:hover{color:var(--coral);}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(16,24,21,.45);
  z-index:80;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(320px,84vw);
  background:#fff;
  z-index:90;
  padding:22px 20px 32px;
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;
  flex-direction:column;
  gap:4px;
  overflow-y:auto;
  box-shadow:-16px 0 40px rgba(16,60,52,.12);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:14px;
}
.drawer-close{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  display:grid;place-items:center;
  color:var(--pine);
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--coral);}
.drawer-link{
  display:block;
  font-size:16.5px;
  font-weight:500;
  color:var(--ink);
  padding:13px 12px;
  border-radius:10px;
  transition:background-color .2s ease,color .2s ease;
}
.drawer-link:hover{background:var(--paper-2);color:var(--pine);}
.drawer-link.is-active{background:var(--paper);color:var(--coral-600);font-weight:600;}
.drawer-cta{margin-top:18px;width:100%;}
.drawer-note{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.8;
  color:var(--muted);
}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  width:44px;height:44px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  color:var(--pine);
  display:grid;
  place-items:center;
  box-shadow:var(--shadow-card);
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,background-color .2s ease;
  z-index:50;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--paper);border-color:var(--coral);}

/* ---------- Animations ---------- */
@keyframes riseIn{
  from{opacity:0;transform:translateY(12px);}
  to{opacity:1;transform:translateY(0);}
}
.reveal{animation:riseIn .6s ease both;}
.reveal-delay-1{animation-delay:.1s;}
.reveal-delay-2{animation-delay:.2s;}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-cta-desktop{display:none;}
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .guide-index{position:static;}
  .index-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;}
  .index-note{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-card{max-width:560px;}
  .pitfall-grid,.faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .cta-footnote{text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:820px){
  .search-box{display:none;}
  .section{padding:64px 0;}
  .page-hero{padding:52px 0 48px;}
  .checklist-grid{grid-template-columns:1fr;}
  .step-card{padding:24px;}
  .step-title{font-size:20px;}
  .step-num{font-size:26px;}
}
@media (max-width:560px){
  .container{padding-left:18px;padding-right:18px;}
  .header-inner{height:64px;gap:12px;}
  .brand{font-size:15px;}
  .brand-mark{width:30px;height:30px;}
  .hero-title{font-size:32px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .index-links{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .checklist-card{padding:22px;}
  .pitfall-item{padding:16px 18px;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;}
  .to-top{right:16px;bottom:20px;}
}
@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: category4 */
:root{
    --pine:#103C34;
    --pine-600:#1C5549;
    --coral:#D95A3A;
    --coral-600:#BF4528;
    --paper:#F6F2EA;
    --paper-2:#FCFAF6;
    --ink:#1B1F1D;
    --muted:#66706B;
    --line:#E4DED3;
    --sand:#C9A86A;
    --night:#101815;
    --radius-sm:8px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-card:0 8px 24px rgba(16,60,52,.06);
    --shadow-lift:0 14px 36px rgba(16,60,52,.10);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,p,ul,ol,dl,dd{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--coral);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.95);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(160%) blur(8px);
  }
  .site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,60,52,.07)}
  .header-inner{display:flex;align-items:center;gap:28px;height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:32px;height:32px;flex:none;border-radius:10px;
    color:var(--pine);background:rgba(16,60,52,.06);
    display:flex;align-items:center;justify-content:center;
  }
  .brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--pine);white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--muted);
    padding:6px 0;transition:color .18s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--coral);opacity:0;transform:scaleX(.4);
    transition:opacity .2s ease,transform .2s ease;
  }
  .nav-link:hover{color:var(--pine)}
  .nav-link:hover::after{opacity:.5;transform:scaleX(1)}
  .nav-link.is-active{color:var(--pine);font-weight:600}
  .nav-link.is-active::after{opacity:1;transform:scaleX(1)}
  .header-right{display:flex;align-items:center;gap:14px;margin-left:auto}
  .nav-search{
    display:flex;align-items:center;gap:8px;height:40px;width:220px;
    padding:0 14px;border-radius:999px;background:var(--paper);
    border:1px solid var(--line);transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
  }
  .nav-search svg{color:var(--muted);flex:none}
  .nav-search input{
    border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);
  }
  .nav-search input::placeholder{color:#98a09b}
  .nav-search:focus-within{background:#fff;border-color:var(--coral);box-shadow:0 0 0 3px rgba(217,90,58,.14)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;
    border-radius:var(--radius-md);padding:0 22px;height:46px;
    transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .btn-sm{height:40px;padding:0 20px;border-radius:999px;font-size:14px}
  .btn-primary{background:var(--coral-600);color:#fff;box-shadow:0 4px 14px rgba(191,69,40,.22)}
  .btn-primary:hover{background:var(--coral);transform:translateY(-1px);box-shadow:var(--shadow-lift)}
  .btn-primary:active{transform:translateY(0) scale(.99)}
  .btn-ghost{background:transparent;color:var(--pine);border:1px solid rgba(16,60,52,.35)}
  .btn-ghost:hover{background:var(--pine);color:#fff;border-color:var(--pine);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0) scale(.99)}
  .btn-dark{background:var(--night);color:#fff}
  .btn-dark:hover{background:#1b2723;transform:translateY(-1px);box-shadow:var(--shadow-lift)}
  .btn-block{width:100%}

  .nav-toggle{
    display:none;width:44px;height:44px;align-items:center;justify-content:center;
    border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--pine);
  }
  .nav-toggle:hover{background:var(--paper)}
  .mobile-drawer{
    border-top:1px solid var(--line);background:#fff;padding:16px 24px 24px;
  }
  .mobile-drawer[hidden]{display:none}
  .mobile-drawer .drawer-link{
    display:block;padding:13px 4px;font-size:17px;font-weight:500;color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .mobile-drawer .drawer-link.is-active{color:var(--coral-600);font-weight:600}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:46px;margin:18px 0 14px;padding:0 14px;
    border-radius:10px;background:var(--paper);border:1px solid var(--line);
  }
  .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}

  /* ---------- Hero ---------- */
  .faq-hero{position:relative;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden}
  .faq-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-1.png);
    background-size:cover;background-position:center right;opacity:.13;
  }
  .faq-hero::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(16,60,52,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(16,60,52,.05) 1px,transparent 1px);
    background-size:56px 56px;opacity:.5;pointer-events:none;
  }
  .faq-hero-inner{position:relative;z-index:1;padding:64px 0 72px;max-width:860px}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
  .crumb a:hover{color:var(--coral-600)}
  .crumb .sep{color:#b9b1a4}
  .crumb .current{color:var(--ink)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    color:var(--pine);background:rgba(16,60,52,.07);
    border-radius:999px;padding:6px 14px;margin-bottom:20px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:999px;background:var(--coral)}
  h1{
    font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
    font-size:clamp(34px,4.6vw,56px);line-height:1.1;font-weight:700;letter-spacing:-.02em;
    color:var(--pine);
  }
  h1 .accent{color:var(--coral-600);box-shadow:inset 0 -8px 0 rgba(217,90,58,.14)}
  .hero-lead{margin-top:20px;font-size:18px;line-height:1.75;color:var(--muted);max-width:720px}

  .search-wrap{margin-top:32px}
  .big-search{
    display:flex;align-items:center;gap:12px;height:60px;padding:0 8px 0 20px;
    background:#fff;border:1px solid var(--line);border-radius:999px;
    box-shadow:var(--shadow-card);transition:border-color .2s ease,box-shadow .2s ease;
  }
  .big-search:focus-within{border-color:var(--coral);box-shadow:0 0 0 4px rgba(217,90,58,.12)}
  .big-search svg{color:var(--muted);flex:none}
  .big-search input{
    flex:1;border:0;background:transparent;outline:none;font-size:16px;color:var(--ink);min-width:0;
  }
  .big-search input::placeholder{color:#9aa39e}
  .big-search .clear-btn{
    display:none;width:32px;height:32px;border-radius:999px;align-items:center;justify-content:center;
    color:var(--muted);flex:none;
  }
  .big-search .clear-btn:hover{background:var(--paper);color:var(--coral-600)}
  .big-search .clear-btn.is-visible{display:flex}
  .big-search .btn{border-radius:999px;height:46px;flex:none}
  .search-hint{margin-top:14px;font-size:13px;color:var(--muted)}
  .search-hint a{color:var(--pine);border-bottom:1px solid rgba(16,60,52,.25)}
  .search-hint a:hover{color:var(--coral-600);border-color:var(--coral)}

  .hero-stats{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
    margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
  }
  .stat-num{
    font-family:"Noto Serif SC","Songti SC",serif;font-size:30px;font-weight:700;
    color:var(--pine);line-height:1.1;font-variant-numeric:tabular-nums;
  }
  .stat-label{font-size:13px;color:var(--muted);margin-top:6px}

  /* ---------- Sections ---------- */
  .section{padding:88px 0}
  .section-tight{padding:64px 0}
  .section-head{max-width:720px;margin-bottom:36px}
  .section-kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
    color:var(--coral-600);margin-bottom:12px;letter-spacing:.04em;
  }
  .section-kicker::before{content:"";width:22px;height:1px;background:var(--coral)}
  h2{
    font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
    font-size:clamp(26px,2.8vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.015em;color:var(--pine);
  }
  .section-desc{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.8}

  /* tips strip */
  .tips-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .tip-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .tip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card);border-color:rgba(217,90,58,.3)}
  .tip-card .tip-index{
    font-family:"Noto Serif SC",serif;font-size:13px;font-weight:700;color:var(--sand);
    letter-spacing:.08em;font-variant-numeric:tabular-nums;
  }
  .tip-card h3{font-size:17px;font-weight:600;margin:10px 0 8px;color:var(--ink)}
  .tip-card p{font-size:14px;line-height:1.75;color:var(--muted)}

  /* chips */
  .filter-bar{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:8px;
  }
  .chip{
    display:inline-flex;align-items:center;gap:8px;
    height:38px;padding:0 18px;border-radius:999px;
    font-size:14px;font-weight:500;color:var(--muted);
    background:#fff;border:1px solid var(--line);
    transition:all .18s ease;
  }
  .chip:hover{color:var(--pine);border-color:rgba(16,60,52,.35)}
  .chip.is-active{background:var(--pine);color:#fff;border-color:var(--pine)}
  .chip .chip-count{font-size:12px;opacity:.7;font-variant-numeric:tabular-nums}
  .filter-note{margin-left:auto;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

  /* FAQ groups */
  .faq-group{padding:28px 0;border-bottom:1px solid var(--line)}
  .faq-group:last-child{border-bottom:0}
  .faq-group[hidden]{display:none}
  .faq-group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:8px}
  .faq-group-head .num{
    font-family:"Noto Serif SC",serif;font-size:14px;font-weight:700;color:var(--sand);
    font-variant-numeric:tabular-nums;letter-spacing:.06em;
  }
  .faq-group-head h2{font-size:22px;letter-spacing:-.01em}
  .faq-group-head .count{margin-left:auto;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

  .faq-item{
    border-bottom:1px solid rgba(228,222,211,.75);
    transition:background .25s ease;
  }
  .faq-item:last-child{border-bottom:0}
  .faq-item[hidden]{display:none}
  .faq-item summary{
    display:flex;align-items:flex-start;gap:16px;
    padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);
    cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";margin-left:auto;flex:none;
    font-family:"Noto Serif SC",serif;font-size:22px;line-height:1;font-weight:400;
    color:var(--pine);transition:transform .3s ease,color .2s ease;
  }
  .faq-item[open] summary::after{content:"−";color:var(--coral-600)}
  .faq-item summary:hover{color:var(--coral-600)}
  .faq-item summary:hover::after{color:var(--coral-600)}
  .faq-item[open] summary{color:var(--pine)}
  .faq-answer{padding:0 4px 22px 0;max-width:820px}
  .faq-answer p{font-size:15px;line-height:1.85;color:var(--muted)}
  .faq-answer p + p{margin-top:10px}
  .faq-answer strong{color:var(--ink);font-weight:600}
  .faq-answer ol{margin:10px 0 0;padding-left:20px;list-style:decimal}
  .faq-answer ol li{font-size:15px;line-height:1.85;color:var(--muted);margin-bottom:6px}
  .faq-answer .inline-note{
    display:inline-block;margin-top:12px;font-size:13px;color:var(--pine);
    background:rgba(16,60,52,.06);border-radius:999px;padding:5px 14px;
  }

  /* empty state */
  .faq-empty{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-lg);
    background:var(--paper-2);margin-top:28px;
  }
  .faq-empty[hidden]{display:none}
  .faq-empty svg{color:var(--muted);margin-bottom:16px}
  .faq-empty h3{font-size:18px;font-weight:600;color:var(--ink)}
  .faq-empty p{margin:8px 0 20px;font-size:14px;color:var(--muted);max-width:420px}

  /* ---------- Contact / feedback ---------- */
  .contact-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
  .contact-aside .aside-figure{
    border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
    box-shadow:var(--shadow-card);margin-top:28px;
  }
  .aside-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .contact-list{margin-top:26px;display:grid;gap:14px}
  .contact-list li{display:flex;gap:12px;font-size:14px;color:var(--muted);line-height:1.7}
  .contact-list .k{flex:none;width:74px;color:var(--pine);font-weight:600}

  .form-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:32px;box-shadow:var(--shadow-card);
  }
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .field{margin-bottom:18px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px}
  .field .req{color:var(--coral-600)}
  .field input[type="text"],
  .field input[type="email"],
  .field select,
  .field textarea{
    width:100%;border:1px solid var(--line);border-radius:10px;
    background:#fff;padding:0 14px;height:44px;font-size:15px;color:var(--ink);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
  .field select{
    appearance:none;
    background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2366706B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--coral);box-shadow:0 0 0 3px rgba(217,90,58,.14);
  }
  .field input::placeholder,.field textarea::placeholder{color:#a7afaa}
  .check-row{display:flex;align-items:flex-start;gap:10px;margin:4px 0 20px}
  .check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--coral-600);flex:none}
  .check-row label{font-size:13px;color:var(--muted);line-height:1.7}
  .check-row a{color:var(--pine);border-bottom:1px solid rgba(16,60,52,.3)}
  .check-row a:hover{color:var(--coral-600);border-color:var(--coral)}
  .form-msg{
    display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;line-height:1.7;
  }
  .form-msg.is-visible{display:block}
  .form-msg.ok{background:rgba(16,60,52,.07);color:var(--pine);border:1px solid rgba(16,60,52,.18)}
  .form-msg.err{background:rgba(217,90,58,.09);color:var(--coral-600);border:1px solid rgba(217,90,58,.28)}
  .form-foot{margin-top:14px;font-size:12px;color:var(--muted)}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--night);color:#fff}
  .cta-inner{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
    padding:80px 0;
  }
  .cta-inner h2{color:#fff;font-size:clamp(26px,2.8vw,36px)}
  .cta-inner p{margin-top:14px;font-size:15px;line-height:1.8;color:#C9D2CD;max-width:460px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
  .cta-actions .btn{height:52px;padding:0 28px}
  .btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42)}
  .btn-outline-light:hover{background:rgba(255,255,255,.1);transform:translateY(-1px)}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--night);color:#C9D2CD;padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.06)}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);color:#fff}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:#9aa8a2;max-width:320px}
  .footer-contact{margin-top:18px;display:grid;gap:8px;font-size:13px;color:#8f9d97}
  .footer-contact strong{color:#d7ded9;font-weight:600}
  .footer-col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.02em;margin-bottom:16px}
  .footer-col a{display:block;font-size:14px;color:#C9D2CD;padding:6px 0;transition:color .18s ease,transform .18s ease}
  .footer-col a:hover{color:var(--coral);transform:translateX(2px)}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
    display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
    font-size:13px;color:#8f9d97;
  }
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px}
  .footer-bottom-links a:hover{color:var(--coral)}

  /* sticky mobile download */
  .sticky-download{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
    padding:10px 16px;background:rgba(16,24,21,.96);border-top:1px solid rgba(255,255,255,.1);
    backdrop-filter:blur(6px);
  }
  .sticky-download .btn{width:100%;height:46px;border-radius:10px}

  .to-top{
    position:fixed;right:20px;bottom:96px;z-index:65;
    width:44px;height:44px;border-radius:999px;background:#fff;color:var(--pine);
    border:1px solid var(--line);box-shadow:var(--shadow-card);
    display:none;align-items:center;justify-content:center;
    transition:transform .18s ease,color .18s ease,box-shadow .18s ease;
  }
  .to-top:hover{transform:translateY(-2px);color:var(--coral-600);box-shadow:var(--shadow-lift)}
  .to-top.is-visible{display:flex}

  /* reveal */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
  .reveal.is-in{opacity:1;transform:none}

  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1080px){
    .nav-links{gap:20px}
    .nav-search{width:180px}
    .contact-grid{gap:40px}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
    .footer-col:last-child{grid-column:2 / span 2}
  }
  @media (max-width:900px){
    .nav-links{display:none}
    .nav-search{display:none}
    .nav-toggle{display:flex}
    .header-inner{height:64px;gap:16px}
    .brand-name{font-size:15px}
    .section{padding:68px 0}
    .section-tight{padding:52px 0}
    .faq-hero-inner{padding:48px 0 56px}
    .tips-strip{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .cta-inner{grid-template-columns:1fr;padding:64px 0;gap:28px}
    .cta-actions{justify-content:flex-start}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-col:last-child{grid-column:auto}
    .sticky-download{display:block}
    body{padding-bottom:76px}
    .to-top{bottom:86px}
    .filter-note{margin-left:0;width:100%}
  }
  @media (max-width:640px){
    .container{padding:0 18px}
    h1{font-size:clamp(30px,8vw,38px)}
    .hero-lead{font-size:16px}
    .big-search{height:54px;padding:0 6px 0 16px;gap:8px}
    .big-search .btn{height:42px;padding:0 16px;font-size:14px}
    .big-search input{font-size:15px}
    .hero-stats{grid-template-columns:1fr;gap:14px;margin-top:32px}
    .stat-num{font-size:26px}
    .form-row{grid-template-columns:1fr}
    .form-card{padding:24px}
    .faq-item summary{font-size:16px;padding:18px 2px}
    .faq-group-head h2{font-size:19px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .section{padding:56px 0}
  }