/* roulang page: index */
:root{
    --c-ink:#0E1214;
    --c-ink-soft:#1A2026;
    --c-lime:#B5F23C;
    --c-lime-deep:#8CCB1B;
    --c-mint:#E8F7CE;
    --c-coral:#FF5B2E;
    --c-paper:#F5F4EF;
    --c-surface:#FFFFFF;
    --c-line:#E2E0D8;
    --c-muted:#5C6670;
    --sh-1:0 1px 2px rgba(14,18,20,.04), 0 8px 24px -12px rgba(14,18,20,.10);
    --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
    --r-card:18px;
    --r-media:22px;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    background:var(--c-paper);
    color:var(--c-ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-ink);outline-offset:2px;border-radius:4px}
  section[id],div[id]{scroll-margin-top:96px}
  .container-x{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.container-x{padding-left:32px;padding-right:32px}}

  .nav-shell{background:rgba(14,18,20,.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.10);transition:background .25s ease, box-shadow .25s ease}
  .nav-shell.scrolled{background:rgba(14,18,20,.92);box-shadow:0 18px 40px -22px rgba(0,0,0,.55)}
  .nav-link{color:rgba(255,255,255,.78);position:relative;padding:6px 2px;transition:color .18s ease}
  .nav-link:hover{color:#fff}
  .nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--c-lime);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:#fff}
  .nav-link.active::after{transform:scaleX(1)}
  .nav-dot{width:4px;height:4px;border-radius:999px;background:var(--c-lime);display:inline-block;margin-right:6px;vertical-align:middle}

  .hero-bg{
    background-image:
      linear-gradient(100deg, rgba(14,18,20,.92) 0%, rgba(14,18,20,.72) 55%, rgba(14,18,20,.35) 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    position:relative;
    overflow:hidden;
  }
  .hero-bg::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(115deg, rgba(255,255,255,.04) 0 2px, transparent 2px 14px);
  }
  .hero-inner{position:relative;z-index:2}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:var(--c-lime);color:var(--c-ink);font-weight:600;
    padding:12px 24px;border-radius:999px;border:none;cursor:pointer;
    transition:background .18s ease, transform .18s ease, box-shadow .18s ease;
  }
  .btn-primary:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0) scale(.99)}
  .btn-ghost-light{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:transparent;color:#fff;font-weight:600;
    padding:12px 24px;border-radius:999px;border:1.5px solid rgba(255,255,255,.75);cursor:pointer;
    transition:background .18s ease, transform .18s ease;
  }
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
  .btn-ghost-dark{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:transparent;color:var(--c-ink);font-weight:600;
    padding:12px 24px;border-radius:999px;border:1.5px solid var(--c-ink);cursor:pointer;
    transition:background .18s ease, transform .18s ease;
  }
  .btn-ghost-dark:hover{background:rgba(14,18,20,.06);transform:translateY(-1px)}
  .text-link{color:var(--c-ink);font-weight:600;text-decoration:underline;text-decoration-color:var(--c-lime);text-decoration-thickness:2px;text-underline-offset:3px;transition:color .18s ease}
  .text-link:hover{color:var(--c-lime-deep)}

  .badge{display:inline-flex;align-items:center;gap:6px;background:var(--c-mint);color:var(--c-ink);font-size:12px;font-weight:600;letter-spacing:.02em;padding:4px 12px;border-radius:999px}
  .badge-outline{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--c-line);color:var(--c-muted);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;background:var(--c-surface)}
  .badge-dark{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.10);color:rgba(255,255,255,.86);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.14)}

  .card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease}
  .card-hover:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6D3C8}
  .card-hover:hover .card-title{color:var(--c-lime-deep)}
  .card-title{transition:color .18s ease}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  .field-label{display:block;font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:6px}
  .field{
    width:100%;background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;
    padding:11px 14px;font-size:15px;transition:border-color .18s ease, box-shadow .18s ease;
  }
  .field:focus{outline:none;border-color:var(--c-lime);box-shadow:0 0 0 2px var(--c-lime)}
  .field::placeholder{color:#9AA2A9}

  details.faq{border-bottom:1px solid var(--c-line)}
  details.faq summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:18px 0;font-size:18px;font-weight:600;line-height:1.45}
  details.faq summary::-webkit-details-marker{display:none}
  details.faq summary:hover{color:var(--c-lime-deep)}
  .faq-mark{flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;background:var(--c-surface);transition:transform .2s ease, border-color .2s ease}
  details.faq[open] .faq-mark{transform:rotate(45deg);border-color:var(--c-lime);background:var(--c-mint)}
  .faq-body{padding:0 0 20px 0;border-left:3px solid transparent;transition:border-color .2s ease}
  details.faq[open] .faq-body{border-left:3px solid var(--c-lime);padding-left:16px;animation:faqIn .2s ease}
  @keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  .dash-line{position:relative}
  .dash-line::after{content:"";position:absolute;top:26px;right:-14px;width:28px;border-top:1px dashed #C9C6BB;display:none}
  @media (min-width:1024px){.dash-line::after{display:block}}
  .step-card:last-child .dash-line::after{display:none}

  .mobile-menu{max-height:0;overflow:hidden;transition:max-height .28s ease}
  .mobile-menu.open{max-height:460px}
  .mobile-link{display:flex;align-items:center;min-height:48px;border-bottom:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.86);font-size:15px}
  .mobile-link:last-child{border-bottom:none}

  @media (max-width:767px){
    body{font-size:15px}
    .hero-bg{min-height:auto}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto}
  }

/* roulang page: article */
:root{
    --c-ink:#0E1214;
    --c-ink-soft:#1A2026;
    --c-lime:#B5F23C;
    --c-lime-deep:#8CCB1B;
    --c-mint:#E8F7CE;
    --c-coral:#FF5B2E;
    --c-paper:#F5F4EF;
    --c-surface:#FFFFFF;
    --c-line:#E2E0D8;
    --c-muted:#5C6670;
    --r-card:18px;
    --r-media:22px;
    --sh-1:0 1px 2px rgba(14,18,20,.04), 0 8px 24px -12px rgba(14,18,20,.10);
    --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
    --font-sans:-apple-system, BlinkMacSystemFont, "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;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    color:#20272D;
    background:var(--c-paper);
    background-image:radial-gradient(circle at 12% -6%, rgba(181,242,60,.14), transparent 42%);
    background-repeat:no-repeat;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,dl,figure,blockquote{margin:0;}
  ul,ol{padding:0;list-style:none;}
  [id]{scroll-margin-top:96px;}
  :focus-visible{outline:2px solid var(--c-ink);outline-offset:2px;border-radius:6px;}
  .dark-zone :focus-visible,.site-footer :focus-visible,.article-hero :focus-visible{outline-color:var(--c-lime);}
  .skip-link{
    position:absolute;left:16px;top:-60px;z-index:100;
    background:var(--c-lime);color:var(--c-ink);font-weight:600;
    padding:10px 18px;border-radius:999px;transition:top .2s ease;
  }
  .skip-link:focus{top:16px;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

  /* ============ 悬浮胶囊导航 ============ */
  .nav-wrap{position:sticky;top:16px;z-index:50;}
  .nav-shell{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 12px;border-radius:999px;
    background:rgba(14,18,20,.78);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.10);
    box-shadow:0 12px 30px -18px rgba(14,18,20,.55);
    transition:background .25s ease, box-shadow .25s ease;
  }
  .nav-shell.nav-scrolled{background:rgba(14,18,20,.92);box-shadow:0 16px 36px -16px rgba(14,18,20,.65);}
  .brand{display:flex;align-items:center;gap:10px;padding-left:8px;}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;flex:0 0 32px;
    background:linear-gradient(135deg,var(--c-lime) 0%,var(--c-lime-deep) 100%);
    display:flex;align-items:center;justify-content:center;
    color:var(--c-ink);font-weight:800;font-size:14px;letter-spacing:-.02em;
  }
  .brand-text{color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    color:rgba(255,255,255,.78);padding:8px 2px;
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
    background:var(--c-lime);transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:#fff;}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-dot{display:none;width:4px;height:4px;border-radius:999px;background:var(--c-lime);flex:0 0 4px;}
  .nav-link.active{color:#fff;}
  .nav-link.active .nav-dot{display:inline-block;}
  .nav-cta{
    display:inline-flex;align-items:center;justify-content:center;
    min-height:40px;padding:0 20px;border-radius:999px;
    background:var(--c-lime);color:var(--c-ink);font-weight:600;font-size:14px;
    transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
  }
  .nav-cta:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .nav-cta:active{transform:translateY(0) scale(.99);}
  .menu-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:48px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.14);
    background:rgba(255,255,255,.06);color:#fff;cursor:pointer;
  }
  .menu-btn:hover{background:rgba(255,255,255,.14);}
  .mobile-panel{
    margin:10px 16px 0;border-radius:24px;background:rgba(14,18,20,.97);
    border:1px solid rgba(255,255,255,.10);overflow:hidden;
  }
  .mobile-panel a{
    display:flex;align-items:center;min-height:48px;padding:0 20px;
    color:rgba(255,255,255,.82);font-size:15px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .mobile-panel a:last-child{border-bottom:0;}
  .mobile-panel a:hover,.mobile-panel a.active{color:#fff;background:rgba(181,242,60,.10);}

  /* ============ 文章头 ============ */
  .article-hero{
    position:relative;
    padding:120px 0 108px;
    color:#fff;
    background:
      linear-gradient(100deg, rgba(14,18,20,.94) 0%, rgba(14,18,20,.78) 55%, rgba(14,18,20,.48) 100%),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  }
  .article-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(115deg, rgba(255,255,255,.035) 0 1px, transparent 1px 9px);
  }
  .article-hero .container{position:relative;z-index:1;}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);}
  .breadcrumb a{color:rgba(255,255,255,.72);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--c-lime);}
  .breadcrumb .sep{color:rgba(255,255,255,.32);}
  .breadcrumb [aria-current="page"]{color:rgba(255,255,255,.9);}
  .hero-title{
    margin-top:22px;max-width:900px;
    font-size:clamp(24px,3.4vw,34px);line-height:1.35;font-weight:800;letter-spacing:-.01em;
    color:#fff;
  }
  .meta-row{
    margin-top:20px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
    font-size:14px;color:rgba(255,255,255,.72);
  }
  .meta-row .divider{width:1px;height:14px;background:rgba(255,255,255,.24);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    background:var(--c-mint);color:var(--c-ink);
  }
  .badge-outline{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:12px;font-weight:600;
    border:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.86);
    background:rgba(255,255,255,.06);
  }
  .num{font-variant-numeric:tabular-nums;}

  /* ============ 封面 ============ */
  .cover-wrap{position:relative;z-index:2;margin-top:-72px;}
  .cover-frame{
    border-radius:var(--r-media);overflow:hidden;background:var(--c-surface);
    border:1px solid var(--c-line);box-shadow:var(--sh-2);
    aspect-ratio:16/9;
  }
  .cover-frame img{width:100%;height:100%;object-fit:cover;}

  /* ============ 正文 ============ */
  .article-main{padding:64px 0 24px;}
  .article-col{max-width:720px;margin:0 auto;}
  .notice{
    display:flex;gap:12px;align-items:flex-start;
    background:var(--c-mint);border-radius:14px;padding:16px 20px;
    font-size:14px;line-height:1.75;color:#22301A;margin-bottom:36px;
  }
  .notice svg{flex:0 0 20px;margin-top:3px;color:var(--c-lime-deep);}
  .article-body{font-size:17px;line-height:1.9;color:#20272D;}
  .article-body > * + *{margin-top:1.5em;}
  .article-body p{color:#2A3238;}
  .article-body h2{
    font-size:clamp(20px,2.2vw,22px);font-weight:700;line-height:1.4;
    color:var(--c-ink);margin-top:40px;margin-bottom:16px;
    padding-left:12px;border-left:4px solid var(--c-lime);
  }
  .article-body h3{font-size:18px;font-weight:600;line-height:1.45;color:var(--c-ink);margin-top:28px;margin-bottom:12px;}
  .article-body h4{font-size:16px;font-weight:600;color:var(--c-ink);margin-top:22px;margin-bottom:8px;}
  .article-body ul,.article-body ol{margin-top:1.2em;}
  .article-body li{position:relative;padding-left:20px;margin-bottom:8px;line-height:1.85;}
  .article-body ul li::before{
    content:"";position:absolute;left:2px;top:.75em;
    width:7px;height:7px;border-radius:2px;background:var(--c-lime);
  }
  .article-body ol{counter-reset:listcount;}
  .article-body ol li{counter-increment:listcount;padding-left:26px;}
  .article-body ol li::before{
    content:counter(listcount) ".";
    position:absolute;left:0;top:0;font-weight:700;font-size:15px;
    color:var(--c-lime-deep);font-variant-numeric:tabular-nums;
  }
  .article-body blockquote{
    background:var(--c-mint);border-left:4px solid var(--c-lime);
    padding:20px 24px;border-radius:0 12px 12px 0;color:#22301A;font-size:16px;
  }
  .article-body blockquote p{color:#22301A;margin:0;}
  .article-body figure{margin:32px 0;}
  .article-body figure img{border-radius:16px;width:100%;}
  .article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
  .article-body a{color:var(--c-ink);text-decoration:underline;text-decoration-color:var(--c-lime);text-underline-offset:3px;transition:color .2s ease;}
  .article-body a:hover{color:var(--c-lime-deep);}
  .article-body img{border-radius:16px;}
  .article-body strong{font-weight:700;color:var(--c-ink);}
  .article-body code{
    background:#EDEBE3;border-radius:6px;padding:2px 6px;font-size:14px;
    font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  }
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;}
  .article-body th,.article-body td{border-bottom:1px solid var(--c-line);padding:10px 12px;text-align:left;}
  .article-body th{background:#FAF9F5;font-weight:600;color:var(--c-ink);}

  /* 标签 */
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line);}
  .tag{
    display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
    font-size:13px;font-weight:600;color:var(--c-ink);
    background:var(--c-surface);border:1px solid var(--c-line);
    transition:border-color .2s ease,color .2s ease,transform .2s ease;
  }
  .tag:hover{border-color:var(--c-lime);color:var(--c-lime-deep);transform:translateY(-1px);}

  /* 上下篇 */
  .pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
  .pager-card{
    display:block;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .pager-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFCEC4;}
  .pager-card .kicker{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-muted);text-transform:uppercase;}
  .pager-card .label{display:block;margin-top:8px;font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.55;}
  .pager-card:hover .label{color:var(--c-lime-deep);}
  .back-link{
    display:inline-flex;align-items:center;gap:8px;margin-top:28px;
    font-size:14px;font-weight:600;color:var(--c-ink);
    text-decoration:underline;text-decoration-color:var(--c-lime);text-underline-offset:4px;
  }
  .back-link:hover{color:var(--c-lime-deep);}

  /* ============ 通用区块 ============ */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
  .sec-title{font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:-.01em;}
  .sec-sub{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:620px;}
  .text-link{
    font-size:14px;font-weight:600;color:var(--c-ink);
    text-decoration:underline;text-decoration-color:var(--c-lime);text-underline-offset:4px;
    transition:color .2s ease;
  }
  .text-link:hover{color:var(--c-lime-deep);}

  .card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);overflow:hidden;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFCEC4;}
  .card-media{aspect-ratio:16/9;overflow:hidden;background:#EDEBE3;}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
  .card:hover .card-media img{transform:scale(1.03);}
  .card-body{padding:22px 24px 26px;}
  .card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--c-ink);transition:color .2s ease;}
  .card:hover .card-title{color:var(--c-lime-deep);}
  .card-text{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-muted);}
  .card-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);}

  .rel-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-top:36px;}
  .rel-side{display:grid;gap:24px;align-content:start;}
  .rel-item{display:grid;grid-template-columns:96px 1fr;gap:16px;padding:16px;align-items:center;}
  .rel-item .thumb{width:96px;height:96px;border-radius:14px;overflow:hidden;background:#EDEBE3;}
  .rel-item .thumb img{width:100%;height:100%;object-fit:cover;}

  .empty-state{
    margin-top:32px;border:1px dashed rgba(14,18,20,.18);border-radius:var(--r-card);
    padding:48px 24px;text-align:center;background:rgba(255,255,255,.6);
  }
  .empty-state p{font-size:15px;color:var(--c-muted);}
  .empty-state .btn-ghost{margin-top:18px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 24px;border-radius:999px;
    font-weight:600;font-size:15px;cursor:pointer;border:1.5px solid transparent;
    transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .btn-lime{background:var(--c-lime);color:var(--c-ink);}
  .btn-lime:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-lime:active{transform:translateY(0) scale(.99);}
  .btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
  .btn-ghost:hover{background:rgba(14,18,20,.06);}
  .btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);}

  /* ============ FAQ ============ */
  .faq-item{
    border-left:3px solid transparent;padding:20px 0 20px 18px;
    border-bottom:1px solid var(--c-line);
    transition:border-color .2s ease,background .2s ease;
  }
  .faq-item[open]{border-left-color:var(--c-lime);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
    font-size:17px;font-weight:600;line-height:1.6;color:var(--c-ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .sign{
    flex:0 0 22px;width:22px;height:22px;border-radius:999px;margin-top:2px;
    border:1.5px solid var(--c-line);display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;color:var(--c-muted);transition:.2s ease;
  }
  .faq-item[open] summary .sign{background:var(--c-lime);border-color:var(--c-lime);color:var(--c-ink);}
  .faq-body{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-muted);animation:faqIn .2s ease-out;}
  @keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

  /* ============ CTA ============ */
  .cta-band{
    background:var(--c-ink);color:#fff;border-radius:26px;padding:52px 44px;
    display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center;
  }
  .cta-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:#fff;}
  .cta-desc{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);}
  .check-list{margin-top:22px;display:grid;gap:10px;}
  .check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.86);}
  .check-list svg{flex:0 0 18px;margin-top:4px;color:var(--c-lime);}
  .cta-card{
    background:var(--c-surface);border-radius:var(--r-media);padding:28px;
    box-shadow:0 30px 60px -30px rgba(0,0,0,.6);
  }
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
  .field input,.field select,.field textarea{
    width:100%;background:#fff;border:1px solid var(--c-line);border-radius:12px;
    padding:12px 14px;font-size:15px;color:#20272D;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--c-lime);box-shadow:0 0 0 2px rgba(181,242,60,.55);
  }
  .field textarea{min-height:88px;resize:vertical;}
  .form-note{font-size:12px;color:var(--c-muted);line-height:1.7;margin-top:12px;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 28px;}
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-brand .brand-text{font-size:18px;color:#fff;}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;max-width:260px;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
  .footer-grid h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:16px;}
  .footer-grid ul li{margin-bottom:10px;}
  .footer-grid a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease;}
  .footer-grid a:hover{color:var(--c-lime);}
  .footer-info li{font-size:14px;line-height:1.8;margin-bottom:8px;}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);
  }

  @media (max-width:1023px){
    .rel-grid{grid-template-columns:1fr;}
    .cta-band{grid-template-columns:1fr;padding:40px 28px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  }
  @media (max-width:767px){
    body{font-size:15px;}
    .article-hero{padding:108px 0 88px;}
    .cover-wrap{margin-top:-52px;}
    .article-main{padding:48px 0 16px;}
    .article-body{font-size:16px;}
    .section{padding:64px 0;}
    .pager{grid-template-columns:1fr;}
    .cta-band{padding:32px 22px;border-radius:22px;}
    .cta-card{padding:22px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-grid > div{padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.08);}
    .footer-grid > div:last-child{border-bottom:0;padding-bottom:0;}
  }
  @media (max-width:519px){
    .brand-text{font-size:15px;}
    .container{padding-left:16px;padding-right:16px;}
    .meta-row{font-size:13px;gap:9px;}
    .rel-item{grid-template-columns:1fr;}
    .rel-item .thumb{width:100%;height:150px;}
  }

/* roulang page: category1 */
:root{
  --c-ink:#0E1214;
  --c-ink-soft:#1A2026;
  --c-lime:#B5F23C;
  --c-lime-deep:#8CCB1B;
  --c-mint:#E8F7CE;
  --c-coral:#FF5B2E;
  --c-paper:#F5F4EF;
  --c-surface:#FFFFFF;
  --c-line:#E2E0D8;
  --c-muted:#5C6670;
  --r-card:18px;
  --r-media:22px;
  --r-pill:999px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(14,18,20,.04), 0 8px 24px -12px rgba(14,18,20,.10);
  --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
  --font-stack:-apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-stack);background:var(--c-paper);color:var(--c-ink);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
[id]{scroll-margin-top:96px}
:focus-visible{outline:2px solid var(--c-ink);outline-offset:2px;border-radius:6px}
.nav-shell :focus-visible,.footer-area :focus-visible{outline-color:var(--c-lime)}

/* 基础容器 */
.container-site{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container-site{padding-left:32px;padding-right:32px}}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--c-lime);color:var(--c-ink);padding:12px 18px;font-weight:600;border-radius:0 0 12px 0}
.skip-link:focus{left:0}

/* 悬浮胶囊导航 */
.nav-shell{
  border-radius:var(--r-pill);
  background:rgba(14,18,20,.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 12px 34px -20px rgba(0,0,0,.65);
  transition:background .25s ease, box-shadow .25s ease;
}
.nav-shell.is-scrolled{background:rgba(14,18,20,.92);box-shadow:0 18px 44px -22px rgba(0,0,0,.8)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-lime),#7FC70F);
  display:grid;place-items:center;color:var(--c-ink);
  font-weight:800;font-size:16px;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.78);padding:6px 2px;transition:color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:var(--c-lime);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff}
.nav-link.active::after{transform:scaleX(0)}
.nav-dot{width:4px;height:4px;border-radius:50%;background:var(--c-lime);display:inline-block;flex:0 0 auto}
.nav-toggle{width:48px;height:48px;display:grid;place-items:center;border-radius:var(--r-pill);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#fff;cursor:pointer;transition:background .2s ease}
.nav-toggle:hover{background:rgba(255,255,255,.16)}
.mobile-menu{display:none;margin-top:10px;border-radius:24px;background:rgba(14,18,20,.97);border:1px solid rgba(255,255,255,.10);padding:6px 20px;backdrop-filter:blur(12px);box-shadow:0 22px 48px -24px rgba(0,0,0,.8)}
.mobile-menu.is-open{display:block}
.mobile-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;color:rgba(255,255,255,.82);font-size:15px;border-bottom:1px solid rgba(255,255,255,.08);transition:color .2s ease}
.mobile-link:last-child{border-bottom:none}
.mobile-link:hover,.mobile-link.active{color:#fff}
.mobile-link.active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-lime);margin-right:8px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);padding:12px 24px;font-weight:600;font-size:15px;line-height:1.2;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--c-lime);color:var(--c-ink)}
.btn-primary:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-ghost:hover{background:rgba(14,18,20,.06);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* 文字链接 */
.link-lime{color:var(--c-ink);text-decoration:underline;text-decoration-color:var(--c-lime);text-decoration-thickness:2px;text-underline-offset:3px;transition:color .18s ease}
.link-lime:hover{color:var(--c-lime-deep)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.02em;background:var(--c-mint);color:#2F3A12}
.badge-dark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.20);color:#fff}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}

/* 卡片 */
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease}
.card-hover:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}

/* 页头带 */
.page-hero{position:relative;overflow:hidden;background:var(--c-ink)}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-hero-veil{position:absolute;inset:0;background:linear-gradient(100deg, rgba(14,18,20,.94) 0%, rgba(14,18,20,.78) 55%, rgba(14,18,20,.42) 100%)}
.stat-chip{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:14px 16px;transition:background .2s ease,transform .2s ease}
.stat-chip:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
.stat-chip strong{display:block;font-size:15px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums}
.stat-chip span{display:block;font-size:12px;color:rgba(255,255,255,.66);line-height:1.6;margin-top:2px}

/* 目录 */
.toc-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-muted);margin-bottom:10px}
.toc-link{position:relative;display:block;padding:9px 0 9px 16px;font-size:14px;color:var(--c-muted);transition:color .18s ease}
.toc-link::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:0;border-radius:2px;background:var(--c-lime);transition:height .2s ease}
.toc-link:hover{color:var(--c-ink)}
.toc-link.is-active{color:var(--c-ink);font-weight:600}
.toc-link.is-active::before{height:20px}

/* 步骤卡 */
.step-stack{display:grid;gap:20px}
.step-card{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-media);padding:20px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease}
@media(min-width:640px){.step-card{grid-template-columns:200px minmax(0,1fr);gap:24px;padding:24px}}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step-media{border-radius:16px;overflow:hidden;aspect-ratio:4/3;background:var(--c-paper)}
.step-media img{width:100%;height:100%;object-fit:cover}
.step-num{width:40px;height:40px;flex:0 0 auto;border-radius:var(--r-pill);border:1.5px solid var(--c-lime);background:var(--c-mint);display:grid;place-items:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums}
.step-tip{margin-top:14px;padding:12px 16px;background:var(--c-mint);border-left:3px solid var(--c-lime);border-radius:0 12px 12px 0;font-size:13.5px;line-height:1.75;color:#3A4415}

/* 清单 */
.check-list li{position:relative;padding-left:30px;margin-bottom:12px;font-size:15px;line-height:1.8}
.check-list li::before{content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;background:var(--c-lime)}
.check-list li::after{content:"";position:absolute;left:5px;top:12px;width:6px;height:9px;border-right:2px solid var(--c-ink);border-bottom:2px solid var(--c-ink);transform:rotate(42deg)}
.mint-block{background:var(--c-mint);border-left:4px solid var(--c-lime);border-radius:0 14px 14px 0;padding:20px 24px;font-size:15px;line-height:1.85;color:#333D12}

/* 提示行 */
.notice-row{display:grid;gap:8px;padding:20px 0;border-bottom:1px solid var(--c-line)}
@media(min-width:768px){.notice-row{grid-template-columns:220px minmax(0,1fr);gap:24px;align-items:start}}
.notice-row:last-child{border-bottom:none}

/* 引导卡 */
.guide-card{background:var(--c-ink);border-radius:var(--r-media);padding:28px;color:#fff;display:grid;gap:22px;align-items:center}
@media(min-width:768px){.guide-card{grid-template-columns:minmax(0,1fr) auto;padding:34px 38px}}

/* FAQ */
.faq-item{border-bottom:1px solid var(--c-line)}
.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;line-height:1.5;transition:color .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-lime-deep)}
.faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--c-line);transition:transform .2s ease,border-color .2s ease,background-color .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-ink);border-radius:2px}
.faq-icon::before{left:50%;top:5px;width:1.5px;height:10px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:5px;height:1.5px;width:10px;transform:translateY(-50%)}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--c-lime);border-color:var(--c-lime)}
.faq-body{padding:0 0 22px 16px;border-left:3px solid var(--c-lime);font-size:15px;line-height:1.85;color:#3B444C;animation:faqIn .2s ease}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* 表单 */
.field{display:block;margin-bottom:16px}
.field-label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}
.field-input{width:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-input);padding:12px 14px;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease}
.field-input:focus{outline:none;border-color:var(--c-lime);box-shadow:0 0 0 2px var(--c-lime)}
.field-input::placeholder{color:#9AA2A9}
.field-hint{font-size:12px;color:var(--c-muted);margin-top:10px;line-height:1.7}

/* 页脚 */
.footer-area{background:var(--c-ink);color:#fff}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:rgba(255,255,255,.55);margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;transition:color .18s ease}
.footer-link:hover{color:var(--c-lime)}
@media(max-width:767px){.footer-col + .footer-col{border-top:1px solid rgba(255,255,255,.08);padding-top:24px}}

/* 响应式字号 */
.h1-clamp{font-size:clamp(28px,4.6vw,46px);line-height:1.24;font-weight:800;letter-spacing:-.01em}
.h2-clamp{font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:700}
@media(max-width:639px){body{font-size:15px}}

/* roulang page: category2 */
:root{
    --c-ink:#0E1214;
    --c-ink-soft:#1A2026;
    --c-lime:#B5F23C;
    --c-lime-deep:#8CCB1B;
    --c-mint:#E8F7CE;
    --c-coral:#FF5B2E;
    --c-paper:#F5F4EF;
    --c-surface:#FFFFFF;
    --c-line:#E2E0D8;
    --c-muted:#5C6670;
    --sh-1:0 1px 2px rgba(14,18,20,.04),0 8px 24px -12px rgba(14,18,20,.10);
    --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
    --r-card:18px;
    --r-media:22px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--c-paper);
    color:var(--c-ink);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  body.no-scroll{overflow:hidden}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font-family:inherit;font-size:inherit}
  h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-ink);outline-offset:2px}
  .dark-input:focus-visible{outline-color:var(--c-lime)}

  .skip-link{
    position:absolute;left:-9999px;top:0;z-index:200;
    background:var(--c-ink);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;font-size:14px;
  }
  .skip-link:focus{left:0}

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

  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

  /* ---------- 悬浮胶囊导航 ---------- */
  .site-header{
    position:sticky;top:16px;z-index:60;
    margin-bottom:8px;
  }
  .site-header::before{
    content:"";position:absolute;left:0;right:0;top:-24px;height:110px;
    background:linear-gradient(to bottom,rgba(245,244,239,.95) 0%,rgba(245,244,239,.55) 60%,rgba(245,244,239,0) 100%);
    pointer-events:none;z-index:-1;
  }
  .nav-shell{
    background:rgba(14,18,20,.78);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.10);
    border-radius:999px;
    box-shadow:0 10px 30px -18px rgba(14,18,20,.55);
    transition:background .25s ease,box-shadow .25s ease;
  }
  .site-header.is-scrolled .nav-shell{
    background:rgba(14,18,20,.92);
    box-shadow:0 16px 38px -20px rgba(14,18,20,.72);
  }
  .brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
  .brand-mark{
    width:28px;height:28px;border-radius:9px;background:var(--c-lime);
    display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;
  }
  .brand-mark svg{width:16px;height:16px}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:7px;
    color:rgba(255,255,255,.78);padding:8px 2px;transition:color .18s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--c-lime);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:#fff}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:#fff}
  .nav-dot{width:4px;height:4px;border-radius:50%;background:var(--c-lime);display:none;flex:0 0 4px}
  .nav-link.active .nav-dot{display:inline-block}
  .menu-btn{
    width:48px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.16);
    background:rgba(255,255,255,.06);display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;transition:background .2s ease;
  }
  .menu-btn:hover{background:rgba(255,255,255,.14)}
  .menu-btn span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
  .menu-btn span::before,.menu-btn span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .22s ease;
  }
  .menu-btn span::before{top:-6px}
  .menu-btn span::after{top:6px}
  .menu-btn[aria-expanded="true"] span{background:transparent}
  .menu-btn[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
  .menu-btn[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
  .mobile-panel{
    display:none;margin-top:12px;background:rgba(14,18,20,.96);
    border:1px solid rgba(255,255,255,.10);border-radius:26px;padding:8px 20px 16px;
    backdrop-filter:blur(12px);
  }
  .mobile-panel.open{display:block}
  .mobile-panel a{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;color:rgba(255,255,255,.82);font-size:15px;font-weight:500;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .mobile-panel a:last-of-type{border-bottom:0}
  .mobile-panel a.active{color:#fff}
  .mobile-panel a.active::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-lime)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-weight:600;font-size:15px;line-height:1;
    padding:14px 26px;border:1.5px solid transparent;cursor:pointer;
    transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn-lime{background:var(--c-lime);color:var(--c-ink)}
  .btn-lime:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-lime:active{transform:translateY(0) scale(.99)}
  .btn-ghost{border-color:var(--c-ink);color:var(--c-ink);background:transparent}
  .btn-ghost:hover{background:rgba(14,18,20,.06);transform:translateY(-1px)}
  .btn-ghost-invert{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
  .btn-ghost-invert:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
  .btn-sm{padding:10px 18px;font-size:13.5px}
  .link-underline{
    color:var(--c-ink);font-weight:600;
    text-decoration:underline;text-decoration-color:var(--c-lime);text-decoration-thickness:2px;text-underline-offset:3px;
    transition:color .18s ease;
  }
  .link-underline:hover{color:var(--c-lime-deep)}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;border-radius:999px;
    background:var(--c-mint);color:#233318;font-size:12px;font-weight:600;
    letter-spacing:.02em;padding:6px 13px;
  }
  .badge-line{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}
  .badge-dark{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.14)}

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
  }
  .card-hover:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
  .media-frame{border-radius:var(--r-media);overflow:hidden;background:#E7E5DE;position:relative}
  .media-frame img{width:100%;height:100%;object-fit:cover}
  .ar-16-9{aspect-ratio:16/9}
  .ar-4-3{aspect-ratio:4/3}
  .ar-1-1{aspect-ratio:1/1}

  /* ---------- 面包屑 ---------- */
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
  .breadcrumb li{display:inline-flex;align-items:center;gap:8px}
  .breadcrumb li + li::before{content:"/";color:#B9B7AE}
  .breadcrumb a:hover{color:var(--c-ink)}
  .breadcrumb [aria-current="page"]{color:var(--c-ink);font-weight:600}

  /* ---------- 页头 ---------- */
  .page-title{font-size:clamp(27px,4.2vw,42px);line-height:1.26;font-weight:800;letter-spacing:-.01em}
  .lead{font-size:16px;line-height:1.9;color:#3B444C;max-width:640px}

  /* ---------- 指标 ---------- */
  .stat-pill{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
    padding:16px 18px;box-shadow:var(--sh-1);
  }
  .stat-figure{font-size:26px;font-weight:800;line-height:1.1;letter-spacing:-.02em}
  .stat-figure em{font-style:normal;font-size:14px;font-weight:700;margin-left:3px;color:var(--c-muted)}

  /* ---------- 清单 ---------- */
  .check-list li{
    display:flex;gap:12px;align-items:flex-start;
    padding:12px 0;border-bottom:1px dashed var(--c-line);font-size:15px;color:#26302F;
  }
  .check-list li:last-child{border-bottom:0}
  .check-mark{
    flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--c-lime);
    display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
  }
  .check-mark svg{width:12px;height:12px}

  /* ---------- 对照卡 ---------- */
  .compare-col{border-radius:16px;padding:22px 22px 18px;height:100%}
  .compare-do{background:var(--c-mint);border:1px solid #D3EBAE}
  .compare-dont{background:#fff;border:1px solid var(--c-line)}
  .compare-col h3{font-size:16px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px}
  .compare-col li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.8;color:#2C3634}
  .compare-col li + li{margin-top:8px}
  .compare-do li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-lime-deep)}
  .compare-dont li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:#C6C3B9}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--c-line)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:22px 0;font-size:17px;font-weight:600;line-height:1.6;transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--c-lime-deep)}
  .faq-item summary:focus-visible{outline:2px solid var(--c-ink);outline-offset:3px;border-radius:8px}
  .faq-plus{
    flex:0 0 24px;width:24px;height:24px;border-radius:50%;border:1px solid var(--c-line);
    position:relative;margin-top:3px;transition:background .2s ease,border-color .2s ease;
  }
  .faq-plus::before,.faq-plus::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--c-ink);border-radius:2px;
    transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
  }
  .faq-plus::before{width:10px;height:2px}
  .faq-plus::after{width:2px;height:10px}
  .faq-item[open] .faq-plus{background:var(--c-lime);border-color:var(--c-lime)}
  .faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-body{
    padding:0 0 22px 15px;border-left:3px solid var(--c-lime);
    font-size:15px;line-height:1.9;color:#39424A;max-width:680px;
    animation:faqIn .2s ease;
  }
  @keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- CTA ---------- */
  .cta-band{
    background-color:var(--c-ink);
    background-image:linear-gradient(100deg,rgba(14,18,20,.95) 0%,rgba(14,18,20,.82) 55%,rgba(14,18,20,.60) 100%),url('/assets/images/backpic/back-3.webp');
    background-size:cover;
    background-position:center;
    border-radius:26px;
  }
  .cta-dot{width:18px;height:18px;border-radius:50%;background:rgba(181,242,60,.16);display:inline-flex;align-items:center;justify-content:center;flex:0 0 18px}
  .cta-dot i{display:block;width:7px;height:7px;border-radius:50%;background:var(--c-lime)}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--c-ink);color:rgba(255,255,255,.72);
    border-radius:28px 28px 0 0;margin-top:72px;
  }
  .footer-title{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px}
  .footer-link{display:block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease,transform .18s ease}
  .footer-link:hover{color:var(--c-lime)}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.08)}
  .foot-brand{color:#fff;font-size:17px;font-weight:700;display:inline-flex;align-items:center;gap:10px}

  @media (max-width:767px){
    .site-footer{border-radius:22px 22px 0 0}
    .page-title{letter-spacing:0}
    .faq-item summary{font-size:16px;padding:18px 0}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important}
    html{scroll-behavior:auto}
  }

/* roulang page: category3 */
:root{
    --c-ink:#0E1214;
    --c-ink-soft:#1A2026;
    --c-lime:#B5F23C;
    --c-lime-deep:#8CCB1B;
    --c-mint:#E8F7CE;
    --c-coral:#FF5B2E;
    --c-paper:#F5F4EF;
    --c-surface:#FFFFFF;
    --c-line:#E2E0D8;
    --c-muted:#5C6670;
    --sh-1:0 1px 2px rgba(14,18,20,.04),0 8px 24px -12px rgba(14,18,20,.10);
    --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
    --r-card:18px;
    --r-media:22px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  h1,h2,h3,h4,p,ul,ol,figure,dl,dd,dt{margin:0}
  ul,ol{padding:0;list-style:none}
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--c-ink);outline-offset:2px;border-radius:6px}
  [id]{scroll-margin-top:96px}

  .site-body{
    background:var(--c-paper);
    color:var(--c-ink);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  .skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--c-ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:14px}
  .skip-link:focus{left:16px;top:12px}

  /* ---------- 导航 ---------- */
  .nav-shell{
    background:rgba(14,18,20,.78);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.10);
    box-shadow:0 14px 34px -22px rgba(14,18,20,.75);
    transition:background .25s ease, box-shadow .25s ease;
  }
  .nav-shell.is-scrolled{background:rgba(14,18,20,.94);box-shadow:0 18px 40px -20px rgba(14,18,20,.85)}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;background:var(--c-lime);
    display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  }
  .brand-mark svg{width:18px;height:18px;display:block}
  .brand-text{color:#fff;font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:7px;
    color:rgba(255,255,255,.78);padding:6px 2px;transition:color .18s ease;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
    background:var(--c-lime);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:#fff}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:#fff;font-weight:600}
  .nav-link.active::after{transform:scaleX(0)}
  .nav-dot{width:4px;height:4px;border-radius:999px;background:var(--c-lime);display:none;flex:0 0 auto}
  .nav-link.active .nav-dot{display:inline-block}

  .btn-lime{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    background:var(--c-lime);color:var(--c-ink);font-weight:600;font-size:14px;
    padding:10px 20px;border-radius:999px;border:1px solid transparent;
    transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn-lime:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-lime:active{transform:translateY(0) scale(.99)}

  .btn-wire{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    background:transparent;color:#fff;font-weight:600;font-size:14px;
    padding:10px 20px;border-radius:999px;border:1.5px solid rgba(255,255,255,.7);
    transition:background .18s ease,border-color .18s ease,transform .18s ease;
  }
  .btn-wire:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px)}

  .btn-outline{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    background:transparent;color:var(--c-ink);font-weight:600;font-size:14px;
    padding:11px 22px;border-radius:999px;border:1.5px solid var(--c-ink);
    transition:background .18s ease,transform .18s ease;
  }
  .btn-outline:hover{background:rgba(14,18,20,.06);transform:translateY(-1px)}

  .btn-icon{
    width:48px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;
    color:#fff;transition:background .18s ease;
  }
  .btn-icon:hover{background:rgba(255,255,255,.14)}

  .mobile-panel{
    background:rgba(14,18,20,.97);
    border:1px solid rgba(255,255,255,.10);
    border-radius:24px;
    box-shadow:0 24px 50px -24px rgba(14,18,20,.8);
    padding:8px 18px 14px;
  }
  .m-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;color:rgba(255,255,255,.86);font-size:15px;font-weight:500;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .m-link:last-child{border-bottom:0}
  .m-link.active{color:var(--c-lime)}
  .m-link span.arrow{color:rgba(255,255,255,.35);font-size:13px}

  /* ---------- 通用 ---------- */
  .section{padding:56px 0}
  .section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
  @media (min-width:768px){.section{padding:88px 0}}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-muted);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--c-lime);border-radius:2px;display:inline-block}

  .h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
  .h2{font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:700}
  .h3{font-size:19px;line-height:1.45;font-weight:600}
  .lead{font-size:16px;color:var(--c-muted);line-height:1.85}
  .meta{font-size:13px;font-weight:500;letter-spacing:.02em;color:var(--c-muted)}

  .card{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);box-shadow:var(--sh-1);
  }
  .card-hover{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
  .card-hover:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6D3C8}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--c-mint);color:#33430F;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    padding:5px 12px;border-radius:999px;line-height:1.6;
  }
  .badge-line{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}
  .badge-coral{background:rgba(255,91,46,.10);color:#A8330F}

  .tag{
    display:inline-flex;align-items:center;
    padding:7px 15px;border-radius:999px;background:var(--c-mint);color:#33430F;
    font-size:13px;font-weight:600;transition:background .18s ease,transform .18s ease;
  }
  .tag:hover{background:var(--c-lime);transform:translateY(-1px)}
  .tag-quiet{background:#fff;border:1px solid var(--c-line);color:var(--c-muted)}
  .tag-quiet:hover{background:#fff;border-color:var(--c-ink);color:var(--c-ink)}

  .link-underline{
    color:var(--c-ink);font-weight:600;
    text-decoration:underline;text-decoration-color:var(--c-lime);
    text-decoration-thickness:2px;text-underline-offset:3px;
    transition:color .18s ease;
  }
  .link-underline:hover{color:var(--c-lime-deep)}

  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
  .crumbs a{transition:color .18s ease}
  .crumbs a:hover{color:var(--c-ink)}
  .crumbs .sep{color:#B9B5A9}
  .crumbs .now{color:var(--c-ink);font-weight:600}

  /* ---------- 页头带 ---------- */
  .page-head{padding:32px 0 8px}
  .head-figure{
    border-radius:var(--r-media);overflow:hidden;border:1px solid var(--c-line);
    box-shadow:var(--sh-1);background:#fff;
  }
  .head-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .stat-strip{display:flex;flex-wrap:wrap;gap:10px}
  .stat-chip{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--c-line);border-radius:999px;
    padding:8px 14px;font-size:13px;font-weight:600;color:var(--c-ink);
  }
  .stat-chip b{font-size:15px;color:var(--c-ink)}
  .stat-chip .dot{width:7px;height:7px;border-radius:999px;background:var(--c-lime);display:inline-block}

  /* ---------- 时间线 ---------- */
  .timeline{position:relative}
  .tl-item{display:grid;grid-template-columns:92px 22px minmax(0,1fr);column-gap:14px;padding-bottom:26px}
  .tl-item:last-child{padding-bottom:0}
  .tl-date{
    padding-top:16px;text-align:right;font-size:13px;font-weight:600;
    letter-spacing:.02em;color:var(--c-muted);font-variant-numeric:tabular-nums;
  }
  .tl-node{position:relative;display:flex;justify-content:center;padding-top:22px}
  .tl-node::before{
    content:"";position:absolute;left:50%;top:0;height:100%;width:1px;
    background:var(--c-line);transform:translateX(-50%);
  }
  .tl-item:first-child .tl-node::before{top:26px;height:calc(100% - 26px)}
  .tl-item:last-child .tl-node::before{height:26px}
  .tl-dot{
    position:relative;z-index:1;width:11px;height:11px;border-radius:999px;
    background:var(--c-lime);border:2px solid #fff;
    box-shadow:0 0 0 3px rgba(181,242,60,.28);
  }
  .tl-card{padding:20px 22px}
  .tl-title{font-size:17px;font-weight:600;line-height:1.5;margin-top:10px}
  .tl-card:hover .tl-title{color:#6EA50F}
  .tl-desc{font-size:14px;color:var(--c-muted);line-height:1.8;margin-top:6px}
  .tl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--c-muted)}

  @media (max-width:639px){
    .tl-item{grid-template-columns:minmax(0,1fr);column-gap:0}
    .tl-node{display:none}
    .tl-date{text-align:left;padding-top:0;margin-bottom:6px}
    .tl-card{padding:18px}
  }

  /* ---------- 侧栏 ---------- */
  .side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
  .side-title{font-size:15px;font-weight:700;letter-spacing:.02em}
  .side-link{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:13px 0;border-bottom:1px dashed var(--c-line);
    font-size:14px;font-weight:500;transition:color .18s ease;
  }
  .side-link:last-child{border-bottom:0;padding-bottom:0}
  .side-link:hover{color:#6EA50F}
  .side-link .arrow{color:#B9B5A9;transition:transform .18s ease}
  .side-link:hover .arrow{transform:translateX(3px)}

  /* ---------- 深色提醒区 ---------- */
  .dark-band{
    position:relative;background-color:var(--c-ink);color:#fff;overflow:hidden;
    background-image:linear-gradient(100deg,rgba(14,18,20,.94) 0%,rgba(14,18,20,.78) 60%,rgba(14,18,20,.58) 100%),url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
  }
  .dark-band .lead{color:rgba(255,255,255,.72)}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86);line-height:1.8}
  .check-list li + li{margin-top:12px}
  .check-mark{
    flex:0 0 auto;width:20px;height:20px;border-radius:999px;background:var(--c-lime);
    display:flex;align-items:center;justify-content:center;margin-top:5px;
  }
  .check-mark svg{width:12px;height:12px}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;gap:32px}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:1fr 2fr;gap:48px}}
  .faq-item{
    background:#fff;border:1px solid var(--c-line);border-radius:16px;
    overflow:hidden;margin-bottom:12px;transition:box-shadow .2s ease;
  }
  .faq-item[open]{box-shadow:inset 3px 0 0 var(--c-lime),var(--sh-1)}
  .faq-item summary{
    cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;font-size:17px;font-weight:600;color:var(--c-ink);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-mark{position:relative;flex:0 0 auto;width:24px;height:24px;border-radius:999px;background:var(--c-mint)}
  .faq-mark::before,.faq-mark::after{
    content:"";position:absolute;background:var(--c-ink);border-radius:2px;transition:opacity .2s ease,transform .2s ease;
  }
  .faq-mark::before{left:6px;right:6px;top:11px;height:2px}
  .faq-mark::after{top:6px;bottom:6px;left:11px;width:2px}
  .faq-item[open] .faq-mark::after{opacity:0;transform:scaleY(.4)}
  .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-muted);animation:fadeUp .2s ease}
  @keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--c-ink);color:#fff}
  .cta-card{
    background:#fff;color:var(--c-ink);border-radius:var(--r-media);
    padding:26px;box-shadow:0 24px 50px -28px rgba(0,0,0,.6);
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:8px}
  .footer-brand{color:#fff;font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px}
  .footer-title{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:14px}
  .footer-link{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
  .footer-link:hover{color:var(--c-lime)}
  .footer-bottom{
    margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
  }
  @media (max-width:767px){
    .site-footer .footer-col{border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:22px}
    .site-footer .footer-col:last-child{border-bottom:0}
  }

  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px}

/* roulang page: category4 */
:root{
    --c-ink:#0E1214;
    --c-ink-soft:#1A2026;
    --c-lime:#B5F23C;
    --c-lime-deep:#8CCB1B;
    --c-mint:#E8F7CE;
    --c-coral:#FF5B2E;
    --c-paper:#F5F4EF;
    --c-surface:#FFFFFF;
    --c-line:#E2E0D8;
    --c-muted:#5C6670;
    --r-card:18px;
    --r-media:22px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(14,18,20,.04), 0 8px 24px -12px rgba(14,18,20,.10);
    --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--c-paper);
    color:var(--c-ink);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4,p,dl,dd,dt,figure,blockquote{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  [id]{scroll-margin-top:96px}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  .skip-link{
    position:absolute;left:16px;top:-60px;z-index:100;
    background:var(--c-ink);color:#fff;padding:10px 18px;border-radius:var(--r-pill);
    font-size:14px;transition:top .2s;
  }
  .skip-link:focus{top:16px}

  /* 悬浮胶囊导航 */
  .site-header{position:sticky;top:16px;z-index:50}
  .nav-shell{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 12px;border-radius:var(--r-pill);
    background:rgba(14,18,20,.78);
    border:1px solid rgba(255,255,255,.10);
    box-shadow:0 12px 32px -18px rgba(14,18,20,.55);
    backdrop-filter:blur(12px);
    transition:background .25s ease;
  }
  @media (min-width:768px){.nav-shell{padding:0 20px}}
  .nav-shell.is-solid{background:rgba(14,18,20,.94)}
  .brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.01em}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;flex:0 0 auto;
    background:linear-gradient(140deg,var(--c-lime) 0%,var(--c-lime-deep) 100%);
    display:grid;place-items:center;color:var(--c-ink);font-size:13px;font-weight:800;
  }
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    padding:6px 2px;color:rgba(255,255,255,.78);
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
    background:var(--c-lime);transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:#fff}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:#fff}
  .nav-link.active::after{transform:scaleX(1);opacity:.5}
  .nav-dot{width:4px;height:4px;border-radius:50%;background:var(--c-lime);display:none}
  .nav-link.active .nav-dot{display:inline-block}
  .nav-toggle{
    width:48px;height:48px;border-radius:14px;border:1px solid rgba(255,255,255,.16);
    background:rgba(255,255,255,.06);display:grid;place-items:center;gap:4px;cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px}
  .mobile-panel{
    margin-top:10px;border-radius:24px;background:rgba(14,18,20,.97);
    border:1px solid rgba(255,255,255,.10);padding:8px 18px 18px;
  }
  .mobile-panel a{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;color:rgba(255,255,255,.82);font-size:15px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .mobile-panel a:last-child{border-bottom:0}
  .mobile-panel a.active{color:#fff}
  .mobile-panel a.active .nav-dot{display:inline-block}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-pill);padding:12px 24px;min-height:44px;
    font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
    transition:transform .18s ease, background .18s ease, box-shadow .18s ease, color .18s ease;
  }
  .btn-primary{background:var(--c-lime);color:var(--c-ink)}
  .btn-primary:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0) scale(.99)}
  .btn-ghost{border-color:var(--c-ink);color:var(--c-ink);background:transparent}
  .btn-ghost:hover{background:rgba(14,18,20,.06)}
  .btn-light{border-color:rgba(255,255,255,.72);color:#fff;background:transparent}
  .btn-light:hover{background:rgba(255,255,255,.12)}
  .btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--c-ink);outline-offset:2px;
  }
  .btn-primary:focus-visible{outline-color:var(--c-ink)}
  .text-link{color:var(--c-ink);font-weight:600;text-decoration:underline;text-decoration-color:var(--c-lime);text-decoration-thickness:2px;text-underline-offset:3px}
  .text-link:hover{color:var(--c-lime-deep)}
  .link-quiet{color:var(--c-muted);font-size:14px;font-weight:500}
  .link-quiet:hover{color:var(--c-ink)}

  /* 徽章 */
  .badge{
    display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
    padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.02em;
    background:var(--c-mint);color:var(--c-ink);
  }
  .badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}
  .badge-light{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.16)}

  /* 页头带 */
  .page-hero{position:relative;overflow:hidden;background:var(--c-ink);color:#fff}
  .page-hero-bg{
    position:absolute;inset:0;
    background-image:linear-gradient(100deg, rgba(14,18,20,.94) 0%, rgba(14,18,20,.82) 52%, rgba(14,18,20,.55) 100%), url("/assets/images/backpic/back-3.webp");
    background-size:cover;background-position:center;
  }
  .page-hero-inner{position:relative;padding:44px 0 56px}
  @media (min-width:1024px){.page-hero-inner{padding:56px 0 72px}}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66)}
  .crumb a:hover{color:#fff}
  .crumb .sep{opacity:.5}
  .crumb [aria-current]{color:#fff}
  .hero-title{
    font-size:clamp(26px,4.2vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.01em;
    margin-top:18px;color:#fff;
  }
  .hero-lead{margin-top:14px;max-width:640px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.76)}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-pill);
    padding:8px 14px;font-size:13px;font-weight:600;
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#fff;
  }
  .hero-badge b{font-variant-numeric:tabular-nums;color:var(--c-lime);font-weight:800}

  .section{padding:64px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
  .section-title{font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.005em}
  .section-desc{margin-top:12px;max-width:720px;color:var(--c-muted);font-size:15px;line-height:1.85}
  .hairline{height:1px;background:var(--c-line);border:0;margin:28px 0}

  /* 筛选条 */
  .filter-bar{
    display:flex;flex-wrap:wrap;gap:10px;padding:14px;border-radius:var(--r-pill);
    background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--sh-1);
  }
  .chip{
    border-radius:var(--r-pill);padding:9px 16px;font-size:13px;font-weight:600;
    background:var(--c-paper);color:var(--c-muted);border:1px solid transparent;cursor:pointer;
    transition:all .18s ease;min-height:38px;
  }
  .chip:hover{color:var(--c-ink);border-color:var(--c-line)}
  .chip.is-on{background:var(--c-ink);color:#fff}

  /* 三段式排查卡 */
  .fix-list{display:grid;gap:20px;margin-top:28px}
  .fix-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .2s ease, transform .2s ease;
  }
  .fix-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
  .fix-head{display:flex;align-items:center;gap:12px;padding:16px 22px;border-bottom:1px solid var(--c-line);flex-wrap:wrap}
  .fix-num{
    font-variant-numeric:tabular-nums;font-size:13px;font-weight:800;letter-spacing:.06em;
    color:var(--c-ink);background:var(--c-mint);border-radius:var(--r-pill);padding:4px 12px;
  }
  .fix-head h3{font-size:18px;font-weight:600;line-height:1.45}
  .fix-grid{display:grid;grid-template-columns:1fr}
  .fix-cell{padding:18px 22px;font-size:15px;line-height:1.85;color:var(--c-muted)}
  .fix-cell + .fix-cell{border-top:1px solid var(--c-line)}
  .fix-label{display:block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-muted);margin-bottom:8px}
  .fix-cell.act{background:var(--c-mint);color:var(--c-ink)}
  .fix-cell.act .fix-label{color:#5A7A16}
  @media (min-width:900px){
    .fix-grid{grid-template-columns:1fr 1fr 1fr}
    .fix-cell + .fix-cell{border-top:0;border-left:1px solid var(--c-line)}
  }

  /* 深色区块 */
  .dark-band{background:var(--c-ink);color:#fff;padding:64px 0}
  @media (min-width:1024px){.dark-band{padding:88px 0}}
  .dark-band .section-desc{color:rgba(255,255,255,.72)}
  .step-list{display:grid;gap:18px;margin-top:32px}
  @media (min-width:900px){.step-list{grid-template-columns:repeat(3,1fr);gap:24px}}
  .step-card{
    background:var(--c-ink-soft);border:1px solid rgba(255,255,255,.10);
    border-radius:var(--r-card);padding:24px;transition:transform .2s ease,border-color .2s ease;
  }
  .step-card:hover{transform:translateY(-2px);border-color:rgba(181,242,60,.35)}
  .step-num{
    font-variant-numeric:tabular-nums;font-size:30px;font-weight:800;color:var(--c-lime);
    line-height:1;letter-spacing:-.02em;
  }
  .step-card h3{margin-top:14px;font-size:18px;font-weight:600;color:#fff}
  .step-card p{margin-top:8px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72)}
  .note-row{display:flex;align-items:flex-start;gap:10px;margin-top:14px;font-size:14px;color:rgba(255,255,255,.72)}
  .tick{width:16px;height:16px;flex:0 0 auto;margin-top:5px;border-radius:4px;background:var(--c-lime);position:relative}
  .tick::after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border-right:2px solid var(--c-ink);border-bottom:2px solid var(--c-ink);transform:rotate(40deg)}

  /* 记录清单 */
  .check-grid{display:grid;gap:16px;margin-top:28px}
  @media (min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr)}}
  .check-item{
    display:flex;gap:14px;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  }
  .check-item .tick{margin-top:6px}
  .check-item h3{font-size:16px;font-weight:600}
  .check-item p{margin-top:6px;font-size:14px;color:var(--c-muted);line-height:1.8}

  /* FAQ */
  .faq-wrap{display:grid;gap:32px;margin-top:32px}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:1fr 2fr;gap:48px;align-items:start}}
  .faq-aside{position:relative}
  @media (min-width:1024px){.faq-aside{position:sticky;top:112px}}
  .faq-item{border-bottom:1px solid var(--c-line)}
  .faq-item summary{
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:20px 0;font-size:17px;font-weight:600;line-height:1.55;cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    border:1px solid var(--c-line);display:grid;place-items:center;
    font-size:15px;font-weight:600;color:var(--c-muted);transition:all .2s ease;
  }
  .faq-item[open] summary::after{content:"−";background:var(--c-lime);border-color:var(--c-lime);color:var(--c-ink)}
  .faq-body{
    padding:0 0 22px 15px;border-left:3px solid var(--c-lime);
    font-size:15px;line-height:1.9;color:var(--c-muted);
    animation:fadeIn .2s ease;
  }
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* CTA */
  .cta-band{background:var(--c-ink);color:#fff;padding:64px 0}
  @media (min-width:1024px){.cta-band{padding:88px 0}}
  .cta-grid{display:grid;gap:32px}
  @media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:center}}
  .form-card{
    background:var(--c-surface);color:var(--c-ink);border-radius:var(--r-media);
    padding:26px;box-shadow:var(--sh-2);
  }
  @media (min-width:768px){.form-card{padding:32px}}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:8px}
  .field input,.field select,.field textarea{
    width:100%;background:#fff;border:1px solid var(--c-line);border-radius:12px;
    padding:12px 14px;font-size:15px;line-height:1.6;transition:border-color .18s ease, box-shadow .18s ease;
  }
  .field textarea{min-height:96px;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--c-lime);box-shadow:0 0 0 2px rgba(181,242,60,.45);
  }
  .field-hint{font-size:12px;color:var(--c-muted);margin-top:10px}

  /* 页脚 */
  .site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:56px 0 0;font-size:14px}
  .footer-grid{display:grid;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a{color:rgba(255,255,255,.72);transition:color .18s ease}
  .footer-col a:hover{color:var(--c-lime)}
  .footer-note{margin-top:14px;line-height:1.85;color:rgba(255,255,255,.62)}
  .footer-bottom{
    margin-top:40px;border-top:1px solid rgba(255,255,255,.08);
    padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);
  }
  @media (max-width:767px){
    .footer-col{border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:24px}
    .footer-col:last-child{border-bottom:0;padding-bottom:0}
  }

/* roulang page: category5 */
:root{
  --c-ink:#0E1214;
  --c-ink-soft:#1A2026;
  --c-lime:#B5F23C;
  --c-lime-deep:#8CCB1B;
  --c-mint:#E8F7CE;
  --c-coral:#FF5B2E;
  --c-paper:#F5F4EF;
  --c-surface:#FFFFFF;
  --c-line:#E2E0D8;
  --c-muted:#5C6670;
  --r-card:18px;
  --r-media:22px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(14,18,20,.04), 0 8px 24px -12px rgba(14,18,20,.10);
  --sh-2:0 18px 40px -18px rgba(14,18,20,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-paper);color:var(--c-ink);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
section{scroll-margin-top:96px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;background:var(--c-lime);color:var(--c-ink);
  padding:10px 18px;border-radius:0 0 12px 0;font-weight:600;font-size:14px;
}
.skip-link:focus{left:0}
:focus-visible{outline:2px solid var(--c-ink);outline-offset:2px;border-radius:6px}
.on-dark :focus-visible{outline-color:#ffffff}

/* 布局容器 */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

/* 排版 */
.h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;margin:0}
.h2{font-size:clamp(22px,2.8vw,30px);line-height:1.3;font-weight:700;margin:0}
.h3{font-size:19px;line-height:1.45;font-weight:600;margin:0}
.h4{font-size:16px;line-height:1.5;font-weight:600;margin:0}
.lead{font-size:17px;line-height:1.85;color:var(--c-muted);margin:0}
.p{font-size:16px;line-height:1.85;color:#3A4148;margin:0}
.small{font-size:13px;line-height:1.6;letter-spacing:.02em;color:var(--c-muted)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* 导航 */
.site-header{position:sticky;top:16px;z-index:50;margin-bottom:-84px}
.nav-pill{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;padding:0 12px;border-radius:var(--r-btn);
  background:rgba(14,18,20,.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 12px 34px -20px rgba(14,18,20,.75);
  transition:background .25s ease, box-shadow .25s ease;
}
.nav-pill.is-solid{background:rgba(14,18,20,.92)}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.01em;padding:4px 6px;border-radius:12px}
.brand-mark{
  width:34px;height:34px;border-radius:12px;background:var(--c-lime);color:var(--c-ink);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;flex:0 0 auto;
}
.brand-text{white-space:nowrap}
.desktop-nav{display:none}
@media (min-width:768px){
  .desktop-nav{display:flex}
}
.nav-link{position:relative;color:rgba(255,255,255,.78);padding:6px 2px;transition:color .2s ease;display:inline-flex;align-items:center}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-lime);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff}
.nav-link.active::after{display:none}
.nav-dot{width:4px;height:4px;border-radius:50%;background:var(--c-lime);display:none;margin-right:6px}
.nav-link.active .nav-dot{display:inline-block}
.nav-actions{display:flex;align-items:center;gap:10px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 24px;
  border:1.5px solid transparent;cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .18s ease, background .2s ease, box-shadow .2s ease, color .2s ease, border-color .2s ease;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--c-lime);color:var(--c-ink)}
.btn-primary:hover{background:var(--c-lime-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink)}
.btn-ghost:hover{background:rgba(14,18,20,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-1px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{
  color:var(--c-ink);font-weight:600;font-size:14px;text-decoration:underline;
  text-decoration-color:var(--c-lime);text-underline-offset:3px;transition:color .2s ease;
}
.link-more:hover{color:var(--c-lime-deep)}

/* 汉堡与移动面板 */
.hamburger{
  width:48px;height:48px;border-radius:999px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:768px){.hamburger{display:none}}
.mobile-panel{
  display:none;margin-top:10px;border-radius:24px;padding:10px 12px;
  background:rgba(14,18,20,.96);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 20px 40px -22px rgba(14,18,20,.8);
}
.mobile-panel.open{display:block}
.mobile-panel .m-link{
  display:flex;align-items:center;min-height:48px;padding:0 8px;color:rgba(255,255,255,.86);
  font-size:15px;font-weight:500;border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-panel .m-link:last-child{border-bottom:0}
.mobile-panel .m-link.active{color:#fff}
.mobile-panel .m-link.active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-lime);margin-right:8px}
@media (min-width:768px){.mobile-panel{display:none !important}}

/* Hero */
.hero{position:relative;overflow:hidden;padding:150px 0 64px;min-height:520px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg, rgba(14,18,20,.94) 0%, rgba(14,18,20,.76) 55%, rgba(14,18,20,.42) 100%);
}
.hero-inner{position:relative;z-index:2;color:#fff;max-width:760px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.72);transition:color .2s ease}
.crumbs a:hover{color:var(--c-lime)}
.crumbs .sep{opacity:.5}
.crumbs .current{color:rgba(255,255,255,.92)}
.hero .h1{color:#fff;max-width:720px}
.hero .lead{color:rgba(255,255,255,.78);max-width:620px;margin-top:16px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-btn);
  padding:6px 13px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--c-mint);color:#25330B;border:1px solid rgba(140,203,27,.4);
}
.badge-outline{background:transparent;color:var(--c-muted);border:1px solid var(--c-line)}
.badge-on-dark{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.18)}
.badge-on-dark i{color:var(--c-lime)}

/* 卡片 */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-flat:hover{transform:none;box-shadow:var(--sh-1)}
.card-dark{background:var(--c-ink-soft);border-color:rgba(255,255,255,.10);color:#fff}
.media{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-media);background:#E7E5DE}
.media-wide{aspect-ratio:16/9}
.media-thumb{width:96px;height:96px;object-fit:cover;border-radius:14px;background:#E7E5DE}

/* 表单 */
.field{display:block;margin-bottom:16px}
.field .label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#2A3138}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--c-line);border-radius:12px;
  padding:12px 14px;font-size:15px;line-height:1.6;transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{min-height:110px;resize:vertical}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CFCCC2}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-lime-deep);box-shadow:0 0 0 3px rgba(181,242,60,.35);
}
.field .hint{display:block;font-size:12px;color:var(--c-muted);margin-top:6px}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-media);
  box-shadow:var(--sh-1);padding:26px;
}
@media (min-width:1024px){.form-card.sticky{position:sticky;top:112px}}

/* 服务说明 dl */
.dl-card{display:grid;grid-template-columns:1fr;gap:14px;margin:0}
@media (min-width:640px){.dl-card{grid-template-columns:1fr 1fr}}
.dl-card > div{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:16px 18px}
.dl-card dt{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-muted);margin-bottom:6px}
.dl-card dd{margin:0;font-size:15px;font-weight:600;line-height:1.6}

/* 列表 */
.check-list{display:grid;gap:10px}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:#3A4148}
.check-list i{color:var(--c-lime-deep);margin-top:5px;font-size:13px}
.check-list.on-dark li{color:rgba(255,255,255,.82)}
.check-list.on-dark i{color:var(--c-lime)}

/* FAQ */
.faq-item{position:relative;border-bottom:1px solid var(--c-line);padding-left:0;transition:padding-left .2s ease}
.faq-item[open]{padding-left:16px}
.faq-item[open]::before{content:"";position:absolute;left:0;top:10px;bottom:22px;width:3px;border-radius:2px;background:var(--c-lime)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:18px;font-weight:600;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-item summary:hover{color:var(--c-lime-deep)}
.faq-item .chev{margin-top:3px;color:var(--c-muted);transition:transform .2s ease;font-size:14px}
.faq-item[open] .chev{transform:rotate(180deg);color:var(--c-lime-deep)}
.faq-body{padding:0 0 20px;font-size:15px;line-height:1.9;color:var(--c-muted);max-width:760px}

/* 区块 */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
.section-warm{background:var(--c-paper)}
.section-white{background:#FBFBF8;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--c-muted);margin-bottom:10px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* CTA 墨底 */
.dark-band{background:var(--c-ink);color:#fff;border-radius:0}
.cta-box{
  background:var(--c-ink);color:#fff;border-radius:26px;padding:34px;
  display:grid;gap:26px;
}
@media (min-width:1024px){
  .cta-box{grid-template-columns:1.15fr .85fr;align-items:center;padding:46px}
}
.cta-box .h2{color:#fff}
.cta-box .p{color:rgba(255,255,255,.72)}
.cta-mini{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:22px;
}

/* 页脚 */
.footer{background:var(--c-ink);color:#fff;padding:60px 0 26px;margin-top:64px}
.footer .fgrid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer .fgrid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer h4{font-size:13px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.55);margin:0 0 14px}
.footer a{display:inline-block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.74);transition:color .2s ease}
.footer a:hover{color:var(--c-lime)}
.footer .fbrand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;font-weight:700;font-size:17px}
.footer .fdesc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:290px}
.footer .fnote{font-size:13px;color:rgba(255,255,255,.62);margin-top:12px}
.footer .fcell{font-size:14px;color:rgba(255,255,255,.84);padding:5px 0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
@media (max-width:767px){
  .footer .fgrid > div{border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:22px}
  .footer .fgrid > div:last-child{border-bottom:0}
}