/* roulang page: index */
:root{
    --ink:#15130F;
    --accent:#D9542B;
    --celadon:#2F6B5A;
    --paper:#F6F4F0;
    --card:#FFFFFF;
    --dark:#121110;
    --line:#E4DFD7;
    --muted:#6B655C;
    --r-card:16px;
    --r-btn:10px;
    --r-input:12px;
    --sh-1:0 1px 2px rgba(21,19,15,.04);
    --sh-2:0 8px 24px -12px rgba(21,19,15,.18);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  hr{border:0;border-top:1px solid var(--line);}
  :focus-visible{outline:2px solid rgba(217,84,43,.55);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:28px;padding-right:28px;}}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section{padding-top:80px;padding-bottom:80px;}}
  @media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.14em;text-transform:uppercase;
    color:var(--celadon);font-weight:700;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:block;border-radius:2px;}

  .h-sec{font-size:26px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
  @media (min-width:768px){.h-sec{font-size:32px;}}
  .sub-sec{color:var(--muted);font-size:15px;max-width:640px;margin-top:10px;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,240,.92);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(140%) blur(0px);
    transition:background .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
  }
  .site-header.is-scrolled{
    background:rgba(246,244,240,.86);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom-color:#D8D2C7;
    box-shadow:0 6px 22px -18px rgba(21,19,15,.45);
  }
  .nav-inner{display:flex;align-items:center;gap:16px;height:56px;}
  @media (min-width:1024px){.nav-inner{height:64px;gap:24px;}}

  .brand{display:flex;align-items:center;gap:8px;flex-shrink:0;}
  .brand-mark{font-size:18px;font-weight:800;letter-spacing:-.02em;line-height:1;}
  .brand-mark span{color:var(--accent);}
  .brand-sub{
    font-size:11px;font-weight:600;color:var(--muted);
    border-left:1px solid var(--line);padding-left:8px;line-height:1.2;
  }
  .brand-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0;}

  .nav-links{display:none;}
  @media (min-width:1024px){
    .nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
  }
  .nav-link{
    position:relative;display:block;padding:8px 12px;font-size:14px;font-weight:600;
    color:#3B362E;border-radius:8px;transition:color .16s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left;
    transition:transform .18s ease-out;border-radius:2px;
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink);}
  .nav-link.active::after{transform:scaleX(1);}

  .nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;}

  .cmd-search{
    display:none;align-items:center;gap:8px;
    width:250px;height:44px;padding:0 12px;
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-input);
    box-shadow:var(--sh-1);transition:border-color .16s ease-out, box-shadow .16s ease-out;
  }
  @media (min-width:1024px){.cmd-search{display:flex;}}
  .cmd-search:focus-within{border-color:rgba(217,84,43,.45);box-shadow:0 0 0 3px rgba(217,84,43,.14);}
  .cmd-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink);}
  .cmd-search input::placeholder{color:#9A9389;font-size:13px;}
  .kbd{
    font-size:11px;font-weight:700;color:var(--muted);
    background:var(--paper);border:1px solid var(--line);border-radius:6px;
    padding:2px 5px;line-height:1.2;white-space:nowrap;
  }

  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:#FFFFFF;color:#3B362E;transition:background .16s ease-out,border-color .16s ease-out,transform .16s ease-out;
  }
  .icon-btn:hover{background:var(--paper);border-color:#D6CFC3;transform:translateY(-1px);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 18px;border-radius:var(--r-btn);
    font-size:14px;font-weight:700;letter-spacing:.01em;
    transition:transform .16s ease-out, background .16s ease-out, box-shadow .16s ease-out, border-color .16s ease-out, color .16s ease-out;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px -12px rgba(217,84,43,.9);}
  .btn-primary:hover{background:#C64A24;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(217,84,43,.95);}
  .btn-ghost{border:1px solid rgba(21,19,15,.18);color:var(--ink);background:transparent;}
  .btn-ghost:hover{background:#FFFFFF;border-color:rgba(21,19,15,.32);transform:translateY(-1px);}
  .btn-lg{height:50px;padding:0 24px;font-size:15px;}
  .btn-sm{height:38px;padding:0 14px;font-size:13px;}

  .menu-toggle{display:inline-flex;}
  @media (min-width:1024px){.menu-toggle{display:none;}}

  .mobile-drawer{
    display:none;border-top:1px solid var(--line);background:rgba(246,244,240,.98);
  }
  .mobile-drawer.open{display:block;}
  @media (min-width:1024px){.mobile-drawer{display:none !important;}}
  .drawer-inner{padding:16px 20px 24px;display:flex;flex-direction:column;gap:6px;}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;
    background:#FFFFFF;border:1px solid var(--line);
  }
  .drawer-link.active{border-color:rgba(217,84,43,.4);color:var(--accent);}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-input);margin-bottom:8px;
  }
  .drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;padding-top:40px;padding-bottom:48px;}
  @media (min-width:768px){.hero{padding-top:56px;padding-bottom:72px;}}
  .hero::before{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(900px 420px at 88% -8%, rgba(47,107,90,.10), transparent 62%),
      radial-gradient(700px 380px at 4% 8%, rgba(217,84,43,.09), transparent 60%);
    pointer-events:none;
  }
  .hero-grid{position:relative;display:grid;gap:36px;}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:7fr 5fr;align-items:center;gap:48px;}
  }
  .hero-title{
    font-size:clamp(32px,5vw,56px);
    font-weight:800;letter-spacing:-.02em;line-height:1.15;
  }
  .hero-title .hl{
    background:linear-gradient(180deg, transparent 62%, rgba(217,84,43,.22) 62%);
    padding:0 2px;
  }
  .hero-sub{margin-top:16px;font-size:16px;color:#4C463D;max-width:520px;line-height:1.8;}
  .hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
  .trust-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;color:var(--muted);}
  .trust-item{display:inline-flex;align-items:center;gap:7px;}
  .trust-dot{width:6px;height:6px;border-radius:50%;background:var(--celadon);}

  .vertical-frame{
    position:relative;width:100%;max-width:330px;margin:0 auto;
    aspect-ratio:9/16;border-radius:20px;overflow:hidden;
    box-shadow:0 24px 60px -32px rgba(21,19,15,.55);
    border:1px solid rgba(21,19,15,.08);
  }
  .vertical-frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
  .vertical-frame:hover img{transform:scale(1.03);}
  .vf-mask{position:absolute;inset:0;background:linear-gradient(180deg, rgba(18,17,16,.42) 0%, rgba(18,17,16,.12) 34%, rgba(18,17,16,.72) 100%);}
  .vf-badge{
    position:absolute;top:14px;left:14px;
    font-size:12px;font-weight:700;padding:5px 10px;border-radius:999px;
    background:rgba(246,244,240,.94);color:var(--ink);
  }
  .vf-time{
    position:absolute;right:14px;bottom:14px;
    font-size:12px;font-weight:700;color:#fff;background:rgba(18,17,16,.68);
    padding:4px 9px;border-radius:999px;letter-spacing:.02em;
  }
  .vf-caption{position:absolute;left:16px;right:16px;bottom:46px;color:#fff;font-size:14px;font-weight:600;line-height:1.5;}
  .play-btn{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    width:62px;height:62px;border-radius:50%;
    background:rgba(18,17,16,.42);border:2px solid rgba(255,255,255,.9);
    display:flex;align-items:center;justify-content:center;
    transition:background .18s ease-out, transform .18s ease-out;
  }
  .play-btn:hover{background:rgba(217,84,43,.85);transform:translate(-50%,-50%) scale(1.05);}

  .float-card{
    position:absolute;right:-14px;bottom:-18px;
    width:196px;background:#FFFFFF;border:1px solid var(--line);border-radius:14px;
    padding:12px 14px;box-shadow:var(--sh-2);
  }
  @media (max-width:520px){.float-card{right:0;bottom:-14px;width:170px;}}
  .float-card .fc-k{font-size:11px;color:var(--muted);letter-spacing:.08em;}
  .float-card .fc-v{font-size:14px;font-weight:700;margin-top:2px;}
  .float-card .fc-bar{margin-top:8px;height:5px;border-radius:999px;background:#EDE9E2;overflow:hidden;}
  .float-card .fc-bar i{display:block;height:100%;width:72%;background:var(--celadon);border-radius:999px;}

  /* ---------- 指标条 ---------- */
  .metric-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#FFFFFF;}
  .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);}
  @media (min-width:768px){.metric-grid{grid-template-columns:repeat(4,1fr);}}
  .metric{padding:20px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
  @media (min-width:768px){.metric{border-bottom:0;}}
  .metric:last-child{border-right:0;}
  .metric-v{font-size:26px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
  .metric-v small{font-size:13px;font-weight:700;color:var(--muted);margin-left:4px;letter-spacing:0;}
  .metric-k{font-size:13px;color:var(--muted);margin-top:2px;}

  /* ---------- 横向轨道 ---------- */
  .rail-wrap{position:relative;}
  .rail{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:6px 20px 22px;margin:0 -20px;
    scrollbar-width:none;-ms-overflow-style:none;
    -webkit-overflow-scrolling:touch;
  }
  .rail::-webkit-scrollbar{display:none;}
  @media (min-width:768px){.rail{padding-left:32px;padding-right:32px;margin:0 -32px;}}
  .rail-mask{
    -webkit-mask-image:linear-gradient(90deg, transparent 0, #000 26px, #000 calc(100% - 26px), transparent 100%);
    mask-image:linear-gradient(90deg, transparent 0, #000 26px, #000 calc(100% - 26px), transparent 100%);
  }
  .clip-card{
    flex:0 0 74%;max-width:250px;scroll-snap-align:start;
    position:relative;aspect-ratio:9/16;border-radius:20px;overflow:hidden;
    border:1px solid rgba(21,19,15,.08);background:#111;
    box-shadow:var(--sh-1);transition:transform .18s ease-out, box-shadow .18s ease-out;
  }
  @media (min-width:640px){.clip-card{flex:0 0 42%;}}
  @media (min-width:1024px){.clip-card{flex:0 0 22%;}}
  .clip-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
  .clip-card img{width:100%;height:100%;object-fit:cover;}
  .clip-card .clip-grad{position:absolute;inset:0;background:linear-gradient(180deg, rgba(18,17,16,0) 42%, rgba(18,17,16,.82) 100%);}
  .clip-card .clip-txt{position:absolute;left:14px;right:14px;bottom:14px;color:#fff;}
  .clip-card .clip-txt h3{font-size:14px;font-weight:700;line-height:1.4;}
  .clip-card .clip-txt span{display:block;font-size:11px;opacity:.82;margin-top:4px;letter-spacing:.04em;}
  .clip-tag{
    position:absolute;top:12px;left:12px;font-size:11px;font-weight:700;
    padding:4px 9px;border-radius:999px;background:rgba(246,244,240,.94);color:var(--ink);
  }
  .rail-nav{display:none;}
  @media (min-width:1024px){.rail-nav{display:flex;gap:8px;}}

  /* ---------- 编号清单 ---------- */
  .check-list{border-top:1px solid var(--line);}
  .check-row{
    display:flex;gap:18px;padding:20px 8px 20px 0;border-bottom:1px solid var(--line);
    position:relative;transition:background .16s ease-out;
  }
  .check-row::before{
    content:"";position:absolute;left:-12px;top:12px;bottom:12px;width:3px;border-radius:3px;
    background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .18s ease-out;
  }
  .check-row:hover{background:#FFFFFF;}
  .check-row:hover::before{transform:scaleY(1);}
  .check-num{
    font-size:40px;font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--accent);
    font-variant-numeric:tabular-nums;min-width:58px;
  }
  .check-body h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
  .check-body p{color:var(--muted);font-size:14px;margin-top:6px;line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;
    background:var(--paper);color:var(--ink);border:1px solid var(--line);
  }
  .badge-celadon{background:rgba(47,107,90,.10);color:var(--celadon);border-color:rgba(47,107,90,.22);}
  .badge-accent{background:rgba(217,84,43,.10);color:#B8431F;border-color:rgba(217,84,43,.24);}

  /* ---------- 通用卡片 ---------- */
  .card{
    display:block;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
    padding:18px;box-shadow:var(--sh-1);
    transition:transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(217,84,43,.32);}
  .card-media{
    position:relative;border-radius:12px;overflow:hidden;background:#EDE9E2;
    aspect-ratio:16/9;margin-bottom:14px;
  }
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
  .card:hover .card-media img{transform:scale(1.03);}
  .card-title{
    font-size:16px;font-weight:700;line-height:1.5;margin-top:10px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-desc{
    color:var(--muted);font-size:14px;margin-top:8px;line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-meta{margin-top:12px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
  .card-lg .card-media{aspect-ratio:16/10;}
  @media (min-width:768px){.card-lg .card-media{aspect-ratio:21/9;}}
  .card-lg .card-title{font-size:20px;}

  /* ---------- 分类入口 ---------- */
  .cat-card{
    display:flex;flex-direction:column;gap:10px;
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--sh-1);height:100%;
    transition:transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
  }
  .cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(47,107,90,.35);}
  .cat-ico{
    width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(47,107,90,.10);color:var(--celadon);font-weight:800;font-size:15px;
  }
  .cat-card h3{font-size:17px;font-weight:700;}
  .cat-card p{font-size:14px;color:var(--muted);line-height:1.7;}
  .cat-more{margin-top:auto;font-size:13px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}

  /* ---------- 暗底口碑带 ---------- */
  .dark-band{background:var(--dark);color:#F2EFE9;}
  .dark-band .eyebrow{color:#9FC7B7;}
  .quote-rail{
    display:flex;gap:14px;overflow-x:auto;padding:4px 4px 18px;
    scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
  }
  .quote-rail::-webkit-scrollbar{display:none;}
  .quote-card{
    flex:0 0 82%;max-width:360px;scroll-snap-align:start;
    background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
    border-radius:14px;padding:16px;
  }
  @media (min-width:768px){.quote-card{flex:0 0 32%;}}
  .quote-card p{font-size:14px;line-height:1.75;color:#E8E4DC;}
  .quote-user{display:flex;align-items:center;gap:10px;margin-top:14px;}
  .quote-avatar{
    width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    background:rgba(217,84,43,.22);color:#F4C9B7;font-size:13px;font-weight:700;
  }
  .quote-user span{font-size:12px;color:#A9A399;}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    background:linear-gradient(120deg, #1A1815 0%, #211D18 55%, #2A211A 100%);
    color:#F5F2EC;border-radius:20px;padding:28px;position:relative;overflow:hidden;
  }
  @media (min-width:768px){.cta-band{padding:40px;}}
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
    background:radial-gradient(circle, rgba(217,84,43,.34), transparent 68%);
  }
  .cta-inner{position:relative;display:flex;flex-direction:column;gap:22px;}
  @media (min-width:768px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}}
  .cta-inner h2{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.3;}
  @media (min-width:768px){.cta-inner h2{font-size:30px;}}
  .cta-inner p{color:#B9B2A7;font-size:14px;margin-top:8px;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:820px;margin:0 auto;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:18px 2px;text-align:left;font-size:16px;font-weight:600;
    transition:color .16s ease-out;
  }
  .faq-q:hover{color:var(--accent);}
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;color:var(--muted);
    transition:transform .2s ease-out, color .2s ease-out, border-color .2s ease-out;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);color:var(--accent);border-color:rgba(217,84,43,.4);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
  .faq-a p{font-size:14px;line-height:1.85;color:var(--muted);padding:0 2px 20px;max-width:700px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#FFFFFF;border-top:1px solid var(--line);padding-top:48px;margin-top:16px;}
  .footer-grid{display:grid;gap:28px;grid-template-columns:1fr;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}}
  .footer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink);text-transform:uppercase;}
  .footer-list{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
  .footer-list a{font-size:13px;color:var(--muted);transition:color .16s ease-out;}
  .footer-list a:hover{color:var(--accent);}
  .footer-note{font-size:13px;color:var(--muted);line-height:1.8;}
  .footer-bottom{
    margin-top:36px;border-top:1px solid var(--line);padding:18px 0 26px;
    display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--muted);
  }
  .footer-bottom a{color:var(--ink);font-weight:600;border-bottom:1px solid rgba(217,84,43,.4);}
  .footer-bottom a:hover{color:var(--accent);}

  .link-underline{
    color:var(--accent);font-weight:700;text-decoration:underline;
    text-underline-offset:4px;text-decoration-thickness:1px;
  }

  /* ---------- 滚动出现 ---------- */
  .reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease-out, transform .5s ease-out;}
  .reveal.in{opacity:1;transform:none;}

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

/* roulang page: article */
:root{
  --ink:#15130F;
  --ink-soft:#3A352D;
  --ink-deep:#121110;
  --accent:#D9542B;
  --accent-dark:#C2481F;
  --celadon:#2F6B5A;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --line:#E4DFD7;
  --muted:#6B655C;
  --radius:16px;
  --radius-lg:20px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(21,19,15,.04);
  --shadow-2:0 8px 24px -12px rgba(21,19,15,.18);
  --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
:focus-visible{outline:2px solid rgba(217,84,43,.55);outline-offset:2px;border-radius:6px}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{
  box-shadow:0 8px 22px -18px rgba(21,19,15,.55);
  border-bottom-color:#D8D2C7;
}
.header-inner{display:flex;align-items:center;gap:18px;height:56px}
@media (min-width:1024px){.header-inner{height:64px;gap:26px}}
.brand{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font-weight:800;letter-spacing:-.01em}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.brand-mark{font-size:17px;font-weight:800;color:var(--ink)}
.brand-mark > span{font-size:12px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}

.nav-links{display:none;align-items:center;gap:2px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;padding:8px 10px;font-size:14px;color:var(--ink-soft);
  border-radius:8px;transition:color .15s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:600}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.command-search{
  display:none;align-items:center;gap:8px;height:40px;padding:0 10px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;width:258px;
  transition:border-color .15s ease-out,box-shadow .15s ease-out;
}
@media (min-width:1280px){.command-search{display:flex}}
.command-search i{color:var(--muted);font-size:13px}
.command-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:14px}
.command-search input::placeholder{color:#A39C90}
.command-search .kbd{
  font-family:var(--font-num);font-size:11px;color:var(--muted);
  background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.command-search:focus-within{border-color:rgba(217,84,43,.5);box-shadow:0 0 0 2px rgba(217,84,43,.15)}
.header-cta{display:none}
@media (min-width:768px){.header-cta{display:inline-flex}}
.menu-toggle{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink-soft);
  transition:border-color .15s ease-out,color .15s ease-out;
}
.menu-toggle:hover{border-color:rgba(217,84,43,.35);color:var(--accent)}
@media (min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--paper)}
.mobile-drawer.open{display:block}
.drawer-nav{display:flex;flex-direction:column;gap:2px;padding-top:10px;padding-bottom:22px}
.drawer-nav .nav-link{padding:13px 10px;font-size:15px;border-bottom:1px solid var(--line);border-radius:0}
.drawer-nav .nav-link::after{display:none}
.drawer-nav .btn{margin-top:16px}

/* ---------- Buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .15s ease-out,background-color .15s ease-out,box-shadow .15s ease-out,border-color .15s ease-out,color .15s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(217,84,43,.85)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(21,19,15,.2)}
.btn-ghost:hover{background:var(--card);border-color:rgba(21,19,15,.38);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:6px 11px;border-radius:999px;background:var(--paper);
  color:var(--ink);border:1px solid var(--line);white-space:nowrap;
}
.badge-celadon{background:rgba(47,107,90,.1);color:var(--celadon);border-color:rgba(47,107,90,.22)}
.badge-accent{background:rgba(217,84,43,.1);color:var(--accent);border-color:rgba(217,84,43,.24)}

/* ---------- Article head ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--muted);padding:22px 0 0;
}
.breadcrumb a{transition:color .15s ease-out}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:#C3BCB0}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{padding:18px 0 26px;border-bottom:1px solid var(--line)}
.head-badges{display:flex;flex-wrap:wrap;gap:8px}
.article-title{
  font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.2;
  letter-spacing:-.02em;margin-top:16px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:16px;font-size:13px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center}
.article-meta i{color:var(--accent);margin-right:6px;font-size:12px}

.article-cover{
  margin-top:26px;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow-1);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease-out}
.article-cover:hover img{transform:scale(1.03)}

/* ---------- Layout ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;padding:36px 0 0}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:52px;padding:56px 0 0;align-items:start}
}

.article-body{max-width:760px;font-size:17px;line-height:1.85;color:#241F19;word-wrap:break-word}
.article-body p{margin:0 0 1.25em}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;
  letter-spacing:-.01em;margin:2em 0 .75em;padding-left:15px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:1.7em 0 .6em;scroll-margin-top:96px}
.article-body a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.article-body a:hover{color:var(--accent-dark)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--card);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink-soft);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em 0 .7em}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-bottom:1.6em}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:0;list-style:none}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.74em;width:10px;height:2px;border-radius:2px;background:var(--accent);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item;position:relative;padding-left:34px;margin-bottom:.6em}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:.24em;
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.02em;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th{
  background:var(--paper);text-align:left;font-weight:600;
  padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

.empty-state{
  text-align:center;padding:60px 24px;background:var(--card);
  border:1px dashed var(--line);border-radius:var(--radius);
}
.empty-state i{font-size:44px;color:#C3BCB0}
.empty-title{font-size:22px;font-weight:700;margin:18px 0 8px}
.empty-text{font-size:15px;color:var(--muted);margin-bottom:22px}

/* ---------- Sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;min-width:0}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1)}
@media (min-width:1024px){.side-sticky{position:sticky;top:88px}}
.side-block + .side-block{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.side-title{
  font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--muted);
  margin-bottom:14px;text-transform:uppercase;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:286px;overflow:auto}
.toc-list a{
  font-size:14px;line-height:1.55;color:var(--ink-soft);padding:8px 10px;
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:background-color .15s ease-out,color .15s ease-out,border-color .15s ease-out;
}
.toc-list a:hover{background:var(--paper);color:var(--ink);border-left-color:var(--accent)}
.toc-list a.is-active{background:var(--paper);color:var(--accent);border-left-color:var(--accent);font-weight:600}
.mini-post{
  display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);
  transition:transform .15s ease-out;
}
.mini-post:last-of-type{border-bottom:0;padding-bottom:2px}
.mini-post:hover{transform:translateX(2px)}
.mini-post img{width:74px;height:54px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.mini-post h4{
  font-size:14px;font-weight:600;line-height:1.5;margin-bottom:4px;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-post:hover h4{color:var(--accent)}
.mini-time{font-size:12px;color:var(--muted)}

/* ---------- Related ---------- */
.related-section{padding:64px 0 8px}
.section-head{margin-bottom:26px}
.section-title{font-size:clamp(22px,2.6vw,28px);font-weight:700;letter-spacing:-.01em}
.section-sub{font-size:14px;color:var(--muted);margin-top:8px}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:1fr 1fr}}
.rcard{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(217,84,43,.3)}
.rcard-thumb{overflow:hidden}
.rcard-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out}
.rcard:hover .rcard-thumb img{transform:scale(1.03)}
.rcard-body{padding:18px 20px 20px}
.rcard-body h3{
  font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rcard-body p{
  font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rcard-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}

.back-strip{
  margin-top:44px;padding:28px 24px;background:var(--ink-deep);border-radius:var(--radius-lg);
  display:flex;flex-direction:column;gap:18px;align-items:center;text-align:center;
}
@media (min-width:768px){.back-strip{flex-direction:row;justify-content:space-between;text-align:left;padding:30px 36px}}
.back-strip h3{color:#fff;font-size:20px;font-weight:700}
.back-strip p{color:#9C958A;font-size:14px;margin-top:6px}
.back-strip .strip-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.back-strip .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.back-strip .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:#CFC9BF;margin-top:76px;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px}}
.site-footer .brand-mark{color:#fff}
.site-footer .brand-mark > span{color:#8C857A}
.footer-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:#8C857A;margin-bottom:14px;text-transform:uppercase}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:#CFC9BF;transition:color .15s ease-out}
.footer-list a:hover{color:#fff}
.footer-note{font-size:13px;line-height:1.85;color:#8C857A;margin:0}
.site-footer .badge{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);color:#CFC9BF}
.site-footer .badge-celadon{background:rgba(47,107,90,.26);border-color:rgba(47,107,90,.5);color:#9FD3C2}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:#8C857A;
}
.footer-bottom a{color:#CFC9BF}
.footer-bottom a:hover{color:#fff}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
    --ink:#15130F;
    --ink-soft:#3D382F;
    --ink-band:#121110;
    --accent:#D9542B;
    --accent-dark:#C24A24;
    --celadon:#2F6B5A;
    --paper:#F6F4F0;
    --card:#FFFFFF;
    --line:#E4DFD7;
    --muted:#6B655C;
    --radius-card:16px;
    --radius-media:20px;
    --radius-btn:10px;
    --radius-field:12px;
    --shadow-1:0 1px 2px rgba(21,19,15,.04);
    --shadow-2:0 8px 24px -12px rgba(21,19,15,.18);
    --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-num:"Inter",ui-sans-serif,system-ui,"Segoe UI",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  html body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none;transition:color .16s ease-out}
  button,input{font:inherit;color:inherit}
  button{cursor:pointer;border:0;background:none}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid rgba(217,84,43,.55);outline-offset:2px;border-radius:4px}

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

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(246,244,240,.96);
    border-bottom:1px solid var(--line);
    transition:box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out;
  }
  .site-header.is-scrolled{
    background:rgba(246,244,240,.86);
    -webkit-backdrop-filter:saturate(150%) blur(10px);
    backdrop-filter:saturate(150%) blur(10px);
    border-bottom-color:#D8D2C8;
    box-shadow:0 10px 24px -18px rgba(21,19,15,.35);
  }
  .header-inner{display:flex;align-items:center;gap:16px;height:56px}
  @media (min-width:1024px){.header-inner{height:64px;gap:24px}}

  .brand{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto}
  .brand-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}
  .brand-mark{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;line-height:1}
  .brand-mark span{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:0;margin-left:4px;vertical-align:1px}

  .nav-links{display:none;align-items:center;gap:2px;margin-left:8px}
  @media (min-width:1024px){.nav-links{display:flex}}
  .nav-link{position:relative;display:inline-block;padding:8px 10px;font-size:14px;color:var(--ink-soft);border-radius:8px;white-space:nowrap}
  .nav-link::after{
    content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;border-radius:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left center;
    transition:transform .18s ease-out;
  }
  .nav-link:hover{color:var(--ink)}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
  .nav-link.active{color:var(--ink);font-weight:600}

  .header-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
  .command-search{
    display:none;align-items:center;gap:8px;height:40px;width:250px;padding:0 10px;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-field);
    transition:border-color .16s ease-out,box-shadow .16s ease-out;
  }
  @media (min-width:1024px){.command-search{display:flex}}
  .command-search:focus-within{border-color:rgba(217,84,43,.5);box-shadow:0 0 0 2px rgba(217,84,43,.14)}
  .command-search svg{width:15px;height:15px;color:var(--muted);flex:0 0 auto}
  .command-search input{flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;font-size:13px}
  .command-search input::placeholder{color:#9A9388}
  .kbd{
    flex:0 0 auto;font-family:var(--font-num);font-size:11px;line-height:1;
    color:var(--muted);background:var(--paper);border:1px solid var(--line);
    border-radius:6px;padding:3px 5px;
  }
  .icon-btn{
    display:none;width:40px;height:40px;align-items:center;justify-content:center;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-btn);
    color:var(--ink-soft);transition:border-color .16s ease-out,color .16s ease-out,transform .16s ease-out;
  }
  @media (min-width:768px){.icon-btn{display:inline-flex}}
  .icon-btn:hover{border-color:rgba(217,84,43,.45);color:var(--accent);transform:translateY(-1px)}
  .icon-btn svg{width:17px;height:17px}

  .menu-toggle{
    display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--ink-soft);
  }
  @media (min-width:1024px){.menu-toggle{display:none}}
  .menu-toggle svg{width:18px;height:18px}

  .mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:6px 0 14px}
  .mobile-drawer.open{display:block}
  @media (min-width:1024px){.mobile-drawer{display:none!important}}
  .mobile-drawer a{display:block;padding:12px 20px;font-size:14px;color:var(--ink-soft);border-bottom:1px solid rgba(228,223,215,.72)}
  .mobile-drawer a:last-child{border-bottom:0}
  .mobile-drawer a.active{color:var(--accent);font-weight:600}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
    transition:background .16s ease-out,color .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out,border-color .16s ease-out;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(21,19,15,.2)}
  .btn-ghost:hover{background:var(--card);border-color:rgba(21,19,15,.34);transform:translateY(-1px)}
  .btn-light{background:#fff;color:var(--ink)}
  .btn-light:hover{background:#F1EEE8;transform:translateY(-1px)}
  .btn-sm{height:38px;padding:0 14px;font-size:13px}
  .btn-lg{height:48px;padding:0 28px;font-size:15px}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    background:var(--paper);border:1px solid var(--line);font-size:12px;line-height:1;color:var(--ink-soft);
  }
  .badge-celadon{background:rgba(47,107,90,.1);border-color:rgba(47,107,90,.22);color:var(--celadon)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;
    text-transform:uppercase;color:var(--accent);margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--accent)}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6}
  .breadcrumb .sep{opacity:.5}
  .breadcrumb a{color:rgba(255,255,255,.72)}
  .breadcrumb a:hover{color:#fff}
  .breadcrumb .current{color:rgba(255,255,255,.95)}

  /* ---------- 分类页 Hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--ink-band)}
  .page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(155deg,rgba(21,19,15,.86) 8%,rgba(18,17,16,.62) 58%,rgba(18,17,16,.88) 100%);
  }
  .page-hero-inner{position:relative;z-index:2;padding-top:48px;padding-bottom:52px}
  @media (min-width:768px){.page-hero-inner{padding-top:64px;padding-bottom:72px}}
  @media (min-width:1024px){.page-hero-inner{padding-top:76px;padding-bottom:88px}}
  .page-hero h1{
    color:#fff;font-size:clamp(28px,4.6vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.18;
    margin:16px 0 14px;max-width:20em;
  }
  .page-hero p.lead{color:rgba(255,255,255,.76);font-size:15px;line-height:1.8;max-width:38em}
  @media (min-width:768px){.page-hero p.lead{font-size:17px}}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

  /* ---------- 数据条 ---------- */
  .stat-band{background:var(--card);border-bottom:1px solid var(--line)}
  .stat-grid{display:grid;grid-template-columns:1fr;gap:2px}
  @media (min-width:640px){.stat-grid{grid-template-columns:repeat(3,1fr)}}
  .stat-item{padding:22px 4px}
  @media (min-width:640px){.stat-item{padding:26px 20px;border-left:1px solid var(--line)}.stat-item:first-child{border-left:0}}
  .stat-num{font-family:var(--font-num);font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
  .stat-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);margin-left:6px}
  .stat-label{font-size:13px;color:var(--muted);margin-top:2px}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:84px 0}}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:720px;margin-bottom:32px}
  @media (min-width:1024px){.section-head{margin-bottom:44px}}
  .section-title{font-size:clamp(22px,3.1vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.32}
  .section-desc{margin-top:12px;font-size:15px;line-height:1.8;color:var(--muted)}

  /* ---------- 竖屏卡片网格 ---------- */
  .vgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  @media (min-width:768px){.vgrid{grid-template-columns:repeat(3,1fr);gap:20px}}
  .vcard{
    position:relative;display:block;overflow:hidden;border-radius:var(--radius-media);
    background:#0E0D0C;aspect-ratio:9/16;box-shadow:var(--shadow-1);
    transition:transform .18s ease-out,box-shadow .18s ease-out;
  }
  .vcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .vcard img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
  .vcard:hover img{transform:scale(1.03)}
  .vcard-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.06) 34%,rgba(0,0,0,.8) 100%)}
  .vcard-index{
    position:absolute;top:12px;left:12px;font-family:var(--font-num);font-size:12px;font-weight:700;
    color:#fff;background:rgba(21,19,15,.55);border:1px solid rgba(255,255,255,.28);
    border-radius:999px;padding:3px 9px;line-height:1.3;
  }
  .vcard-body{position:absolute;left:0;right:0;bottom:0;padding:14px;display:flex;flex-direction:column;gap:4px}
  .vcard-body strong{color:#fff;font-size:15px;font-weight:700;line-height:1.4}
  .vcard-body em{font-style:normal;font-size:12px;line-height:1.55;color:rgba(255,255,255,.74)}

  /* ---------- 步骤清单 ---------- */
  .step-list{border-top:1px solid var(--line)}
  .step-row{
    display:flex;gap:14px;padding:20px 12px;border-bottom:1px solid var(--line);
    transition:background .16s ease-out;position:relative;
  }
  @media (min-width:768px){.step-row{gap:24px;padding:24px 16px}}
  .step-row::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
    transform:scaleY(0);transform-origin:center;transition:transform .18s ease-out;border-radius:2px;
  }
  .step-row:hover{background:var(--card)}
  .step-row:hover::before{transform:scaleY(1)}
  .step-num{
    font-family:var(--font-num);font-size:32px;font-weight:800;color:var(--accent);
    line-height:1;letter-spacing:-.03em;min-width:52px;flex:0 0 auto;
  }
  @media (min-width:768px){.step-num{font-size:40px;min-width:68px}}
  .step-main{flex:1 1 auto;min-width:0}
  .step-title{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:16px;font-weight:600;line-height:1.5}
  .step-text{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted)}

  /* ---------- 对照面板 ---------- */
  .compare{display:grid;gap:16px}
  @media (min-width:768px){.compare{grid-template-columns:1fr 1fr;gap:20px}}
  .compare-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;
    transition:border-color .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out;
  }
  .compare-card:hover{border-color:rgba(217,84,43,.3);transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .compare-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
  .compare-head h3{font-size:18px;font-weight:700;letter-spacing:-.01em}
  .tick-list{display:flex;flex-direction:column;gap:12px}
  .tick-list li{position:relative;padding-left:20px;font-size:14px;line-height:1.8;color:var(--ink-soft)}
  .tick-list li::before{
    content:"";position:absolute;left:0;top:.66em;width:10px;height:2px;border-radius:2px;background:var(--accent);
  }

  /* ---------- FAQ ---------- */
  .faq-list{max-width:800px;margin:0 auto;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
    text-align:left;padding:18px 4px;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);
    transition:color .16s ease-out;
  }
  .faq-q:hover{color:var(--accent)}
  .faq-icon{
    flex:0 0 auto;width:22px;height:22px;color:var(--accent);
    transition:transform .2s ease-out;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
  .faq-a p{padding:0 4px 18px;font-size:14px;line-height:1.8;color:var(--muted);max-width:52em}

  /* ---------- 转化带 ---------- */
  .cta-band{
    background:var(--ink-band);border-radius:var(--radius-media);
    padding:28px 24px;display:flex;flex-direction:column;gap:20px;
    position:relative;overflow:hidden;
  }
  @media (min-width:768px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;gap:32px;padding:34px 40px}
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
    background:radial-gradient(circle,rgba(217,84,43,.32),transparent 68%);pointer-events:none;
  }
  .cta-band h2{color:#fff;font-size:clamp(20px,2.6vw,28px);font-weight:700;letter-spacing:-.01em;line-height:1.35}
  .cta-band p{color:rgba(255,255,255,.7);font-size:14px;line-height:1.75;margin-top:8px;max-width:38em}
  .cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}

  /* ---------- 页脚 ---------- */
  .site-footer{margin-top:64px;background:var(--card);border-top:1px solid var(--line);padding-top:48px}
  @media (min-width:1024px){.site-footer{margin-top:88px;padding-top:64px}}
  .footer-grid{display:grid;gap:32px}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}}
  .footer-title{font-size:13px;font-weight:700;letter-spacing:.03em;margin-bottom:14px;color:var(--ink)}
  .footer-list{display:flex;flex-direction:column;gap:10px}
  .footer-list a{font-size:13px;color:var(--muted)}
  .footer-list a:hover{color:var(--accent)}
  .footer-note{font-size:13px;line-height:1.75;color:var(--muted);max-width:36em}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center;
    border-top:1px solid var(--line);margin-top:40px;padding:18px 0 26px;font-size:13px;color:var(--muted);
  }
  .footer-bottom a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
  .footer-bottom a:hover{color:var(--accent)}

  /* ---------- 动效 ---------- */
  .js-ready .reveal{opacity:0;transform:translateY(8px)}
  .js-ready .reveal.in{opacity:1;transform:none;transition:opacity .5s ease-out,transform .5s ease-out}
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
    .js-ready .reveal{opacity:1;transform:none}
  }

/* roulang page: category2 */
:root{
    --ink:#15130F;
    --accent:#D9542B;
    --celadon:#2F6B5A;
    --paper:#F6F4F0;
    --card:#FFFFFF;
    --dark:#121110;
    --line:#E4DFD7;
    --muted:#6B655C;
    --radius:16px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(21,19,15,.04);
    --shadow-2:0 8px 24px -12px rgba(21,19,15,.18);
    --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    --font-num:"Inter",system-ui,"HarmonyOS Sans","PingFang SC",sans-serif;
  }

  *{box-sizing:border-box;}

  html{scroll-behavior:smooth;}

  .site-body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
  }

  img{max-width:100%;height:auto;display:block;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(246,244,240,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(160%) blur(10px);
    transition:box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .site-header.scrolled{
    border-color:#D8D2C8;
    box-shadow:0 6px 20px -16px rgba(21,19,15,.35);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:56px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    text-decoration:none;
    color:var(--ink);
    flex:none;
  }
  .brand-dot{
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--accent);
    flex:none;
  }
  .brand-mark{
    font-weight:800;
    font-size:17px;
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .brand-mark span{
    font-size:12px;
    font-weight:600;
    color:var(--muted);
    margin-left:4px;
    letter-spacing:0;
  }

  .nav-links{
    display:none;
    align-items:center;
    gap:2px;
    margin-left:6px;
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:8px 10px;
    font-size:14px;
    color:var(--muted);
    text-decoration:none;
    border-radius:8px;
    transition:color .16s ease-out;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:10px;
    right:10px;
    bottom:3px;
    height:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .18s ease-out;
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-link:focus-visible{
    outline:2px solid rgba(217,84,43,.5);
    outline-offset:2px;
  }

  .header-actions{
    margin-left:auto;
    display:flex;
    align-items:center;
    gap:10px;
  }

  .command-search{
    display:none;
    align-items:center;
    gap:8px;
    width:250px;
    height:40px;
    padding:0 10px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:12px;
    transition:border-color .16s ease-out,box-shadow .16s ease-out;
  }
  .command-search:focus-within{
    border-color:rgba(217,84,43,.55);
    box-shadow:0 0 0 3px rgba(217,84,43,.16);
  }
  .command-search .search-input{
    border:0;
    outline:0;
    background:transparent;
    width:100%;
    font-size:14px;
    font-family:inherit;
    color:var(--ink);
  }
  .command-search .search-input::placeholder{color:#A39C92;}
  .kbd{
    flex:none;
    font-family:var(--font-num);
    font-size:11px;
    color:var(--muted);
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:6px;
    padding:1px 6px;
    line-height:1.6;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 20px;
    border-radius:var(--radius-btn);
    font-family:inherit;
    font-size:14px;
    font-weight:600;
    text-decoration:none;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .16s ease-out,box-shadow .16s ease-out,background-color .16s ease-out,color .16s ease-out,border-color .16s ease-out;
  }
  .btn-primary{
    background:var(--accent);
    color:#fff;
    box-shadow:0 6px 16px -12px rgba(217,84,43,.9);
  }
  .btn-primary:hover{
    background:#C64A24;
    transform:translateY(-1px);
    box-shadow:0 10px 22px -14px rgba(217,84,43,.95);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    border-color:rgba(21,19,15,.2);
    color:var(--ink);
    background:transparent;
  }
  .btn-ghost:hover{
    background:#fff;
    border-color:rgba(21,19,15,.35);
    transform:translateY(-1px);
  }
  .btn-sm{height:40px;padding:0 16px;font-size:13px;}
  .btn-lg{height:48px;padding:0 26px;font-size:15px;}
  .btn:focus-visible{
    outline:2px solid rgba(217,84,43,.55);
    outline-offset:2px;
  }
  .header-cta{display:none;}

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
    color:var(--ink);
    cursor:pointer;
    transition:border-color .16s ease-out,color .16s ease-out;
  }
  .menu-toggle:hover{border-color:rgba(217,84,43,.5);color:var(--accent);}
  .menu-toggle:focus-visible{outline:2px solid rgba(217,84,43,.5);outline-offset:2px;}

  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:16px 0 22px;
  }
  .mobile-drawer.open{display:block;}
  .drawer-link{
    display:block;
    padding:12px 14px;
    border-radius:10px;
    font-size:15px;
    color:var(--ink);
    text-decoration:none;
    border:1px solid transparent;
    transition:background-color .16s ease-out,border-color .16s ease-out,color .16s ease-out;
  }
  .drawer-link:hover{background:var(--paper);border-color:var(--line);}
  .drawer-link.active{
    color:var(--accent);
    font-weight:600;
    background:var(--paper);
    border-color:var(--line);
  }

  /* ---------- Breadcrumb & page head ---------- */
  .crumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:6px;
    padding-top:26px;
    font-size:13px;
    color:var(--muted);
  }
  .crumb a{
    color:var(--muted);
    text-decoration:none;
    transition:color .16s ease-out;
  }
  .crumb a:hover{color:var(--accent);}
  .crumb .sep{color:#C3BCB1;}
  .crumb .current{color:var(--ink);}

  .page-head{
    padding:20px 0 44px;
    border-bottom:1px solid var(--line);
  }
  .page-head h1{
    margin:14px 0 0;
    max-width:940px;
    font-size:clamp(30px,4.4vw,50px);
    font-weight:800;
    line-height:1.16;
    letter-spacing:-.02em;
  }
  .page-head .lede{
    margin:16px 0 0;
    max-width:720px;
    font-size:16px;
    color:var(--muted);
  }
  .meta-row{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:20px;
  }

  .badge{
    display:inline-flex;
    align-items:center;
    font-size:12px;
    padding:3px 10px;
    border-radius:999px;
    background:var(--paper);
    border:1px solid var(--line);
    color:var(--ink);
    white-space:nowrap;
  }
  .badge-celadon{
    background:rgba(47,107,90,.10);
    border-color:rgba(47,107,90,.26);
    color:var(--celadon);
  }

  /* ---------- Sections ---------- */
  .section{padding:56px 0;}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
    margin-bottom:28px;
  }
  .eyebrow{
    font-family:var(--font-num);
    font-size:12px;
    font-weight:700;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--accent);
  }
  .section-head h2{
    margin:8px 0 0;
    font-size:clamp(23px,3vw,32px);
    font-weight:700;
    letter-spacing:-.01em;
    line-height:1.3;
  }
  .section-head p{
    margin:0;
    max-width:520px;
    font-size:15px;
    color:var(--muted);
  }

  /* ---------- Editorial numbered list ---------- */
  .editorial-list{
    display:flex;
    flex-direction:column;
    border-top:1px solid var(--line);
  }
  .editorial-item{
    position:relative;
    display:grid;
    grid-template-columns:52px 1fr;
    gap:16px;
    padding:24px 4px;
    border-bottom:1px solid var(--line);
    text-decoration:none;
    color:inherit;
    transition:background-color .18s ease-out,padding-left .18s ease-out;
  }
  .editorial-item::before{
    content:"";
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    width:3px;
    background:var(--accent);
    transform:scaleY(0);
    transform-origin:top center;
    transition:transform .18s ease-out;
  }
  .editorial-item:hover{background:#fff;padding-left:18px;}
  .editorial-item:hover::before{transform:scaleY(1);}
  .editorial-item:focus-visible{
    outline:2px solid rgba(217,84,43,.5);
    outline-offset:-2px;
  }
  .editorial-num{
    font-family:var(--font-num);
    font-size:40px;
    font-weight:800;
    line-height:1;
    letter-spacing:-.04em;
    color:var(--ink);
    padding-top:4px;
  }
  .editorial-body h3{
    margin:0 0 8px;
    font-size:19px;
    font-weight:600;
    letter-spacing:-.005em;
    line-height:1.45;
  }
  .editorial-body p{
    margin:0;
    font-size:15px;
    color:var(--muted);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .editorial-tags{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:12px;
  }

  /* ---------- Compare rows ---------- */
  .rows{border-top:1px solid var(--line);}
  .row-item{
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .row-key{
    font-size:16px;
    font-weight:600;
    letter-spacing:-.005em;
  }
  .row-val{
    font-size:15px;
    color:var(--muted);
  }
  .row-tag{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap;}

  /* ---------- Path / steps ---------- */
  .path{
    position:relative;
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    border-top:1px solid var(--line);
  }
  .path-step{
    position:relative;
    padding:30px 0 8px;
  }
  .path-step::before{
    content:"";
    position:absolute;
    top:-6px;
    left:0;
    width:11px;
    height:11px;
    border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 0 4px var(--paper);
  }
  .path-index{
    font-family:var(--font-num);
    font-size:13px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--accent);
  }
  .path-step h3{
    margin:8px 0 8px;
    font-size:18px;
    font-weight:600;
  }
  .path-step p{
    margin:0;
    font-size:15px;
    color:var(--muted);
    max-width:420px;
  }

  /* ---------- FAQ ---------- */
  .faq{
    max-width:820px;
    display:flex;
    flex-direction:column;
    gap:12px;
  }
  .faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    overflow:hidden;
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .faq-item:hover{border-color:rgba(217,84,43,.35);box-shadow:var(--shadow-1);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 20px;
    background:none;
    border:0;
    text-align:left;
    font-family:inherit;
    font-size:16px;
    font-weight:600;
    line-height:1.55;
    color:var(--ink);
    cursor:pointer;
    transition:color .16s ease-out;
  }
  .faq-q:hover{color:var(--accent);}
  .faq-q:focus-visible{outline:2px solid rgba(217,84,43,.5);outline-offset:-2px;}
  .faq-icon{
    flex:none;
    font-family:var(--font-num);
    font-size:20px;
    line-height:1;
    color:var(--accent);
    transition:transform .2s ease-out;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .2s ease-out;
  }
  .faq-a-inner{
    padding:0 20px 18px;
    font-size:14px;
    line-height:1.8;
    color:var(--muted);
  }

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:20px;
    padding:40px 24px;
    background:
      linear-gradient(120deg,rgba(18,17,16,.88),rgba(18,17,16,.72)),
      url('/assets/images/coverpic/cover-5.webp') center/cover no-repeat;
    color:#fff;
    display:flex;
    flex-direction:column;
    gap:24px;
  }
  .cta-band h2{
    margin:0;
    font-size:clamp(22px,3vw,32px);
    font-weight:800;
    letter-spacing:-.01em;
    line-height:1.3;
  }
  .cta-band p{
    margin:12px 0 0;
    font-size:15px;
    color:rgba(255,255,255,.74);
    max-width:520px;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-band .btn-ghost{
    border-color:rgba(255,255,255,.34);
    color:#fff;
  }
  .cta-band .btn-ghost:hover{
    background:rgba(255,255,255,.12);
    border-color:rgba(255,255,255,.6);
  }

  /* ---------- Footer ---------- */
  .site-footer{
    margin-top:24px;
    background:#fff;
    border-top:1px solid var(--line);
    padding:52px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-title{
    font-size:13px;
    font-weight:700;
    letter-spacing:.06em;
    color:var(--ink);
    margin-bottom:12px;
  }
  .footer-list{
    display:flex;
    flex-direction:column;
    gap:9px;
    font-size:13px;
  }
  .footer-list a{
    color:var(--muted);
    text-decoration:none;
    transition:color .16s ease-out;
  }
  .footer-list a:hover{color:var(--accent);}
  .footer-list a:focus-visible{outline:2px solid rgba(217,84,43,.5);outline-offset:2px;}
  .footer-note{
    margin:0;
    font-size:13px;
    line-height:1.85;
    color:var(--muted);
  }
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    margin-top:40px;
    padding:18px 0 22px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }
  .footer-bottom a{color:var(--muted);text-decoration:none;}
  .footer-bottom a:hover{color:var(--accent);}

  /* ---------- Reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(8px);
    transition:opacity .5s ease-out,transform .5s ease-out;
  }
  .reveal.visible{opacity:1;transform:none;}

  /* ---------- Breakpoints ---------- */
  @media (min-width:640px){
    .container{padding:0 24px;}
    .editorial-item{grid-template-columns:64px 1fr;gap:22px;padding:28px 6px;}
    .editorial-num{font-size:48px;}
    .row-item{grid-template-columns:200px 1fr;gap:24px;align-items:start;}
    .cta-band{padding:48px 36px;}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (min-width:768px){
    .container{padding:0 32px;}
    .header-inner{height:64px;}
    .section{padding:76px 0;}
    .page-head{padding:24px 0 52px;}
    .path{grid-template-columns:repeat(3,1fr);}
    .path-step{padding:32px 28px 8px 0;}
    .path-step::before{left:0;}
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;}
  }
  @media (min-width:1024px){
    .nav-links{display:flex;}
    .command-search{display:flex;}
    .header-cta{display:inline-flex;}
    .menu-toggle{display:none;}
    .section{padding:88px 0;}
    .editorial-item{grid-template-columns:76px 1fr;gap:26px;padding:32px 8px;}
  }

  @media (max-width:639px){
    .cta-actions .btn{width:100%;}
    .page-head h1{max-width:100%;}
  }

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

/* roulang page: category3 */
:root{
    --ink:#15130F;
    --ink-soft:#2A2620;
    --accent:#D9542B;
    --accent-dark:#C04620;
    --celadon:#2F6B5A;
    --celadon-soft:#E4EFEA;
    --paper:#F6F4F0;
    --card:#FFFFFF;
    --dark:#121110;
    --line:#E4DFD7;
    --muted:#6B655C;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-input:12px;
    --shadow-1:0 1px 2px rgba(21,19,15,.04);
    --shadow-2:0 8px 24px -12px rgba(21,19,15,.18);
  }

  *,*::before,*::after{ box-sizing:border-box; }

  html{ -webkit-text-size-adjust:100%; }

  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }

  img{ display:block; max-width:100%; height:auto; }

  a{ color:inherit; text-decoration:none; }

  button{ font-family:inherit; }

  h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }

  ul,ol{ padding:0; list-style:none; }

  :focus-visible{
    outline:2px solid rgba(217,84,43,.75);
    outline-offset:2px;
    border-radius:6px;
  }

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

  /* ---------- 顶部命令栏 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(246,244,240,.94);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease-out, border-color .2s ease-out;
  }
  .site-header.is-scrolled{
    box-shadow:0 10px 28px -24px rgba(21,19,15,.55);
    border-bottom-color:#D8D1C6;
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:18px;
    height:64px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    flex:0 0 auto;
  }
  .brand-dot{
    width:8px;height:8px;border-radius:50%;
    background:var(--accent);
    display:inline-block;
    flex:0 0 auto;
  }
  .brand-mark{
    font-weight:800;
    font-size:17px;
    letter-spacing:-.01em;
    color:var(--ink);
    line-height:1;
    white-space:nowrap;
  }
  .brand-mark span{
    font-weight:600;
    font-size:13px;
    color:var(--muted);
    margin-left:3px;
    letter-spacing:0;
  }

  .nav-links{
    display:flex;
    align-items:center;
    gap:2px;
    margin-left:10px;
  }
  .nav-link{
    position:relative;
    font-size:14px;
    color:var(--ink-soft);
    padding:8px 11px;
    border-radius:8px;
    transition:color .16s ease-out, background .16s ease-out;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:11px;right:11px;bottom:3px;
    height:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .18s ease-out;
  }
  .nav-link:hover{ color:var(--ink); }
  .nav-link:hover::after{ transform:scaleX(1); }
  .nav-link.active{
    color:var(--accent);
    font-weight:700;
  }
  .nav-link.active::after{ transform:scaleX(1); }

  .header-actions{
    margin-left:auto;
    display:flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
  }
  .search-box{
    display:flex;
    align-items:center;
    gap:8px;
    height:40px;
    width:248px;
    padding:0 10px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-input);
    transition:border-color .16s ease-out, box-shadow .16s ease-out;
  }
  .search-box i{ font-size:13px; color:#A9A29A; }
  .search-box input{
    flex:1 1 auto;
    min-width:0;
    border:0;
    outline:0;
    background:transparent;
    font-size:13.5px;
    color:var(--ink);
    font-family:inherit;
  }
  .search-box input::placeholder{ color:#A9A29A; }
  .search-box:focus-within{
    border-color:rgba(217,84,43,.6);
    box-shadow:0 0 0 3px rgba(217,84,43,.14);
  }
  .kbd{
    font-size:11px;
    line-height:1;
    padding:4px 6px;
    border-radius:6px;
    background:var(--paper);
    border:1px solid var(--line);
    color:var(--muted);
    flex:0 0 auto;
  }
  .icon-btn{
    width:40px;height:40px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    color:var(--ink-soft);
    cursor:pointer;
    transition:border-color .16s ease-out, color .16s ease-out, transform .16s ease-out;
  }
  .icon-btn:hover{ border-color:rgba(217,84,43,.45); color:var(--accent); transform:translateY(-1px); }

  .menu-btn{
    display:none;
    width:40px;height:40px;
    align-items:center;justify-content:center;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    color:var(--ink);
    font-size:15px;
    cursor:pointer;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:14.5px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:background .16s ease-out, color .16s ease-out, border-color .16s ease-out, transform .16s ease-out, box-shadow .16s ease-out;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--accent);
    color:#fff;
    box-shadow:0 1px 2px rgba(217,84,43,.28);
  }
  .btn-primary:hover{
    background:var(--accent-dark);
    transform:translateY(-1px);
    box-shadow:0 10px 22px -12px rgba(217,84,43,.65);
  }
  .btn-primary:active{ transform:translateY(0); }
  .btn-ghost{
    background:transparent;
    border-color:rgba(21,19,15,.18);
    color:var(--ink);
  }
  .btn-ghost:hover{
    background:#fff;
    border-color:rgba(21,19,15,.32);
    transform:translateY(-1px);
  }
  .btn-sm{ height:38px; padding:0 15px; font-size:13.5px; border-radius:9px; }
  .btn-block{ width:100%; }

  .link-text{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13.5px;
    font-weight:600;
    color:var(--accent);
    text-underline-offset:4px;
  }
  .link-text:hover{ text-decoration:underline; }

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:12px;
    line-height:1;
    padding:6px 11px;
    border-radius:999px;
    background:var(--paper);
    border:1px solid var(--line);
    color:var(--ink-soft);
    white-space:nowrap;
  }
  .badge-celadon{
    background:var(--celadon-soft);
    border-color:#CFE2DA;
    color:var(--celadon);
  }
  .badge-accent{
    background:rgba(217,84,43,.1);
    border-color:rgba(217,84,43,.28);
    color:var(--accent);
  }
  .eyebrow{
    display:inline-block;
    font-size:12px;
    font-weight:700;
    letter-spacing:.08em;
    color:var(--celadon);
    text-transform:uppercase;
    margin-bottom:12px;
  }

  /* ---------- 移动端抽屉 ---------- */
  .mobile-drawer{
    position:fixed;
    left:0;right:0;top:56px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 32px -26px rgba(21,19,15,.6);
    padding:14px 0 20px;
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .18s ease-out, transform .18s ease-out;
    z-index:55;
  }
  .mobile-drawer.open{ opacity:1; transform:translateY(0); pointer-events:auto; }
  .drawer-nav{ display:flex; flex-direction:column; }
  .drawer-nav a{
    padding:13px 2px;
    font-size:15px;
    color:var(--ink-soft);
    border-bottom:1px solid var(--line);
  }
  .drawer-nav a.active{ color:var(--accent); font-weight:700; }
  .drawer-foot{ margin-top:16px; }

  /* ---------- 面包屑 & 页头 ---------- */
  .crumb{
    display:flex;
    align-items:center;
    gap:8px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--muted);
    padding-top:24px;
  }
  .crumb a{ color:var(--muted); transition:color .16s ease-out; }
  .crumb a:hover{ color:var(--accent); }
  .crumb .sep{ color:#C9C3B8; }
  .crumb .current{ color:var(--ink); font-weight:600; }

  .page-hero{
    padding-bottom:44px;
    border-bottom:1px solid var(--line);
  }
  .hero-grid{
    display:grid;
    grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);
    gap:40px;
    align-items:end;
    padding-top:22px;
  }
  .page-title{
    font-size:clamp(30px,4.4vw,48px);
    font-weight:800;
    letter-spacing:-.02em;
    line-height:1.16;
    color:var(--ink);
  }
  .page-sub{
    margin-top:14px;
    font-size:16px;
    color:var(--muted);
    max-width:56ch;
  }
  .hero-actions{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
    margin-top:24px;
  }

  .stat-board{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
    padding:20px;
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:14px;
  }
  .stat-item{ text-align:left; }
  .stat-num{
    font-family:"Inter",system-ui,sans-serif;
    font-size:30px;
    font-weight:800;
    letter-spacing:-.03em;
    color:var(--accent);
    line-height:1.1;
  }
  .stat-label{
    font-size:12.5px;
    color:var(--muted);
    margin-top:6px;
    line-height:1.5;
  }

  /* ---------- 板块 ---------- */
  .section{ padding:52px 0; }
  @media (min-width:1024px){ .section{ padding:80px 0; } }
  .section-tight{ padding-top:0; }

  .section-head{ max-width:720px; margin-bottom:28px; }
  .section-title{
    font-size:clamp(23px,2.6vw,32px);
    font-weight:700;
    letter-spacing:-.015em;
    line-height:1.25;
    color:var(--ink);
  }
  .section-desc{
    margin-top:10px;
    font-size:15px;
    color:var(--muted);
  }

  /* ---------- 双栏布局 ---------- */
  .layout-2col{
    display:grid;
    grid-template-columns:minmax(0,2fr) minmax(0,1fr);
    gap:32px;
    align-items:start;
  }
  @media (max-width:1023px){
    .layout-2col{ grid-template-columns:1fr; gap:36px; }
  }
  .side-col{ display:flex; flex-direction:column; gap:18px; }
  @media (min-width:1024px){
    .side-col{ position:sticky; top:88px; }
  }

  /* ---------- 情形卡片 ---------- */
  .scene-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:16px;
  }
  @media (max-width:639px){
    .scene-grid{ grid-template-columns:1fr; }
  }
  .scene-card{
    display:flex;
    flex-direction:column;
    gap:10px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px;
    box-shadow:var(--shadow-1);
    transition:transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
  }
  .scene-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-2);
    border-color:rgba(217,84,43,.3);
  }
  .scene-icon{
    width:40px;height:40px;
    border-radius:12px;
    background:var(--paper);
    border:1px solid var(--line);
    color:var(--accent);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:15px;
  }
  .scene-title{
    font-size:16.5px;
    font-weight:700;
    line-height:1.4;
    color:var(--ink);
  }
  .scene-text{
    font-size:14px;
    line-height:1.75;
    color:var(--muted);
  }
  .scene-foot{
    margin-top:auto;
    padding-top:8px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
  }

  /* ---------- 侧栏卡片 ---------- */
  .side-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px;
    box-shadow:var(--shadow-1);
  }
  .side-title{
    font-size:14px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:14px;
    display:flex;
    align-items:center;
    gap:8px;
  }
  .side-title::before{
    content:"";
    width:3px;height:14px;
    border-radius:2px;
    background:var(--accent);
    display:inline-block;
  }
  .side-links{ display:flex; flex-direction:column; }
  .side-links a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    font-size:14px;
    color:var(--ink-soft);
    padding:9px 2px;
    border-bottom:1px dashed var(--line);
    transition:color .16s ease-out, padding-left .16s ease-out;
  }
  .side-links a:last-child{ border-bottom:0; }
  .side-links a:hover{ color:var(--accent); padding-left:6px; }
  .side-links a i{ font-size:11px; color:#B9B2A8; }

  .order-list{ display:flex; flex-direction:column; gap:12px; }
  .order-item{
    display:flex;
    gap:12px;
    align-items:flex-start;
  }
  .order-num{
    font-family:"Inter",system-ui,sans-serif;
    font-size:13px;
    font-weight:800;
    color:var(--accent);
    background:rgba(217,84,43,.09);
    border-radius:8px;
    padding:3px 8px;
    flex:0 0 auto;
    line-height:1.5;
  }
  .order-text{ font-size:13.5px; color:var(--ink-soft); line-height:1.6; }

  .side-cta{
    position:relative;
    overflow:hidden;
    border:0;
    background:var(--dark);
    color:#F6F4F0;
    padding:24px 22px;
  }
  .side-cta::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:.26;
    z-index:0;
  }
  .side-cta > *{ position:relative; z-index:1; }
  .side-cta h3{
    font-size:17px;
    font-weight:700;
    line-height:1.45;
    margin-bottom:8px;
    color:#fff;
  }
  .side-cta p{
    font-size:13.5px;
    line-height:1.7;
    color:#CBC5BD;
    margin-bottom:16px;
  }
  .side-cta .btn-primary{ height:42px; font-size:13.5px; }

  /* ---------- 图文模块 ---------- */
  .media-block{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:36px;
    align-items:center;
  }
  @media (max-width:899px){
    .media-block{ grid-template-columns:1fr; gap:26px; }
  }
  .media-figure{
    border-radius:20px;
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-2);
    background:#fff;
  }
  .media-figure img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    transition:transform .4s ease-out;
  }
  .media-figure:hover img{ transform:scale(1.03); }
  .check-list{ display:flex; flex-direction:column; gap:14px; margin-top:22px; }
  .check-item{
    display:flex;
    gap:12px;
    align-items:flex-start;
  }
  .check-icon{
    width:24px;height:24px;
    border-radius:8px;
    background:var(--celadon-soft);
    color:var(--celadon);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:11px;
    flex:0 0 auto;
    margin-top:2px;
  }
  .check-item strong{
    display:block;
    font-size:15px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:2px;
  }
  .check-item span{ font-size:14px; color:var(--muted); line-height:1.7; }

  /* ---------- 深色 HUD 面板 ---------- */
  .hud-panel{
    background:var(--dark);
    border-radius:20px;
    padding:36px 28px;
    color:#EDE9E3;
  }
  @media (min-width:768px){
    .hud-panel{ padding:48px 44px; }
  }
  .hud-head{ max-width:660px; margin-bottom:30px; }
  .hud-head h2{
    font-size:clamp(22px,2.5vw,30px);
    font-weight:700;
    letter-spacing:-.015em;
    color:#fff;
    line-height:1.3;
  }
  .hud-head p{
    margin-top:12px;
    font-size:14.5px;
    color:#A9A29A;
    line-height:1.75;
  }
  .hud-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:16px;
  }
  @media (max-width:899px){
    .hud-grid{ grid-template-columns:1fr; }
  }
  .hud-card{
    background:rgba(255,255,255,.035);
    border:1px solid rgba(246,244,240,.13);
    border-radius:14px;
    padding:20px;
    transition:border-color .18s ease-out, background .18s ease-out, transform .18s ease-out;
  }
  .hud-card:hover{
    background:rgba(255,255,255,.06);
    border-color:rgba(217,84,43,.55);
    transform:translateY(-2px);
  }
  .hud-idx{
    font-family:"Inter",system-ui,sans-serif;
    font-size:26px;
    font-weight:800;
    letter-spacing:-.03em;
    color:var(--accent);
    line-height:1;
    margin-bottom:14px;
  }
  .hud-card h3{
    font-size:16px;
    font-weight:700;
    color:#fff;
    margin-bottom:8px;
  }
  .hud-card p{
    font-size:13.5px;
    line-height:1.75;
    color:#A9A29A;
  }
  .hud-tag{
    display:inline-block;
    margin-top:14px;
    font-size:11.5px;
    line-height:1;
    padding:5px 9px;
    border-radius:999px;
    border:1px solid rgba(47,107,90,.9);
    background:rgba(47,107,90,.22);
    color:#9FD3C2;
  }

  /* ---------- 提示信息对照 ---------- */
  .compare-list{
    display:flex;
    flex-direction:column;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:#fff;
    overflow:hidden;
    box-shadow:var(--shadow-1);
  }
  .compare-row{
    display:grid;
    grid-template-columns:minmax(0,1fr) 40px minmax(0,1.3fr);
    align-items:center;
    gap:16px;
    padding:20px;
    border-bottom:1px solid var(--line);
    transition:background .16s ease-out;
  }
  .compare-row:last-child{ border-bottom:0; }
  .compare-row:hover{ background:var(--paper); }
  .compare-key{
    font-family:"Inter",system-ui,sans-serif;
    font-size:14.5px;
    font-weight:700;
    color:var(--ink);
    letter-spacing:.01em;
  }
  .compare-key small{
    display:block;
    font-family:inherit;
    font-size:12.5px;
    font-weight:400;
    color:var(--muted);
    margin-top:4px;
    letter-spacing:0;
  }
  .compare-arrow{
    width:32px;height:32px;
    border-radius:50%;
    background:var(--paper);
    border:1px solid var(--line);
    color:var(--accent);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:12px;
    justify-self:center;
  }
  .compare-val{ font-size:14px; color:var(--ink-soft); line-height:1.7; }
  @media (max-width:767px){
    .compare-row{ grid-template-columns:1fr; gap:10px; }
    .compare-arrow{ justify-self:start; transform:rotate(90deg); }
  }

  /* ---------- FAQ ---------- */
  .faq-wrap{ max-width:820px; }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item:first-child{ border-top:1px solid var(--line); }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:20px 2px;
    background:none;
    border:0;
    cursor:pointer;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    transition:color .16s ease-out;
  }
  .faq-q:hover{ color:var(--accent); }
  .faq-q i{
    color:var(--accent);
    font-size:14px;
    flex:0 0 auto;
    transition:transform .2s ease-out;
  }
  .faq-item.open .faq-q i{ transform:rotate(45deg); }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .2s ease-out;
  }
  .faq-a p{
    font-size:14.5px;
    line-height:1.85;
    color:var(--muted);
    padding:0 2px 22px;
    max-width:70ch;
  }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
    background:#fff;
    border:1px solid var(--line);
    border-left:4px solid var(--accent);
    border-radius:18px;
    padding:30px 28px;
    box-shadow:var(--shadow-1);
  }
  .cta-band h2{
    font-size:clamp(20px,2.2vw,26px);
    font-weight:700;
    letter-spacing:-.015em;
    line-height:1.35;
    color:var(--ink);
  }
  .cta-band p{
    margin-top:8px;
    font-size:14.5px;
    color:var(--muted);
    max-width:60ch;
  }
  .cta-actions{ display:flex; gap:12px; flex-wrap:wrap; }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--dark);
    color:#CBC5BD;
    margin-top:20px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.7fr 1fr 1fr 1.2fr;
    gap:34px;
    padding:56px 0 34px;
  }
  @media (max-width:960px){
    .footer-grid{ grid-template-columns:1fr 1fr; gap:30px; }
  }
  @media (max-width:560px){
    .footer-grid{ grid-template-columns:1fr; padding:42px 0 28px; }
  }
  .site-footer .brand-mark{ color:#fff; }
  .site-footer .brand-mark span{ color:#9C958C; }
  .footer-title{
    font-size:14px;
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-list{ display:flex; flex-direction:column; }
  .footer-list a{
    font-size:13px;
    color:#A9A29A;
    padding:5px 0;
    transition:color .16s ease-out;
  }
  .footer-list a:hover{ color:var(--accent); }
  .footer-note{
    font-size:13px;
    line-height:1.8;
    color:#A9A29A;
    max-width:44ch;
  }
  .site-footer .badge{
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.13);
    color:#D8D3CB;
  }
  .site-footer .badge-celadon{
    background:rgba(47,107,90,.25);
    border-color:rgba(47,107,90,.6);
    color:#9FD3C2;
  }
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
    padding:18px 0 26px;
    border-top:1px solid rgba(246,244,240,.12);
    font-size:13px;
    color:#8E877F;
  }
  .footer-bottom a{ color:#CBC5BD; }
  .footer-bottom a:hover{ color:var(--accent); }

  /* ---------- 进场动画 ---------- */
  .js .reveal{
    opacity:0;
    transform:translateY(8px);
    transition:opacity .5s ease-out, transform .5s ease-out;
  }
  .js .reveal.in-view{
    opacity:1;
    transform:translateY(0);
  }

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    .js .reveal{ opacity:1; transform:none; }
  }

  @media (max-width:1000px){
    .nav-links, .search-box, .icon-btn{ display:none; }
    .menu-btn{ display:inline-flex; }
    .header-inner{ height:56px; gap:12px; }
    .brand-mark{ font-size:16px; }
  }
  @media (max-width:1023px){
    .hero-grid{ grid-template-columns:1fr; gap:26px; align-items:start; }
    .stat-board{ max-width:520px; }
  }
  @media (max-width:520px){
    .stat-board{ grid-template-columns:1fr 1fr; }
    .hero-actions .btn{ width:100%; }
    .page-title{ font-size:27px; }
  }

/* roulang page: category4 */
:root{
  --ink:#15130F;
  --ink-soft:#3A3530;
  --muted:#6B655C;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --dark:#121110;
  --line:#E4DFD7;
  --accent:#D9542B;
  --celadon:#2F6B5A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-1:0 1px 2px rgba(21,19,15,.04);
  --shadow-2:0 8px 24px -12px rgba(21,19,15,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num,.kbd,.tl-time{font-family:"Inter",system-ui,-apple-system,sans-serif;font-variant-numeric:tabular-nums}

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

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.94);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out,box-shadow .2s ease-out;
}
.site-header.scrolled{
  background:rgba(246,244,240,.84);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(21,19,15,.07);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
@media(max-width:767px){.header-inner{height:56px;gap:12px}}

.brand{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
.brand-mark{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.brand-mark span{font-size:12px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}

.nav-links{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{
  position:relative;padding:8px 12px;font-size:14px;color:var(--ink-soft);
  border-radius:8px;transition:color .16s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:250px;height:40px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-input);
  transition:box-shadow .16s ease-out,border-color .16s ease-out;
}
.command-search:focus-within{border-color:rgba(217,84,43,.5);box-shadow:0 0 0 3px rgba(217,84,43,.16)}
.command-search i{font-size:13px;color:var(--muted)}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13px;color:var(--ink);font-family:inherit;
}
.command-search input::placeholder{color:#9C968C}
.kbd{
  font-size:11px;padding:2px 6px;border-radius:6px;background:#EFEBE4;
  border:1px solid var(--line);color:var(--muted);
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-soft);
  transition:color .16s ease-out,border-color .16s ease-out,transform .16s ease-out;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(217,84,43,.35);transform:translateY(-1px)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border:0;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;letter-spacing:0;
  transition:transform .16s ease-out,filter .16s ease-out,box-shadow .16s ease-out,background .16s ease-out,color .16s ease-out;
}
.btn-sm{height:40px;padding:0 16px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:transparent;color:var(--ink);border:1px solid rgba(21,19,15,.2)}
.btn-outline:hover{background:#fff;transform:translateY(-1px);border-color:rgba(21,19,15,.35)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,a:focus-visible{
  outline:2px solid rgba(217,84,43,.55);outline-offset:2px;border-radius:8px;
}

.menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;color:var(--ink)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:16px 0 20px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:14px}
.mobile-drawer .drawer-links a{
  padding:11px 4px;font-size:15px;color:var(--ink-soft);border-radius:8px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-links a.active{color:var(--accent);font-weight:700}
.mobile-drawer .btn{width:100%}

@media(max-width:1023px){
  .nav-links{display:none}
  .command-search{display:none}
  .menu-toggle{display:inline-flex}
  .header-actions{gap:8px}
}

/* ---------- 面包屑与页面头部 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--dark);color:#fff}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(18,17,16,.78),rgba(18,17,16,.9)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-inner{position:relative;z-index:2;padding:40px 20px 56px}
@media(min-width:768px){.hero-inner{padding:56px 32px 72px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.62);transition:color .16s ease-out}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.35)}
.breadcrumb [aria-current]{color:#fff}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  padding:5px 12px;border-radius:999px;
  background:rgba(217,84,43,.16);color:#F2A88C;border:1px solid rgba(217,84,43,.35);
  margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(30px,5vw,50px);font-weight:800;max-width:900px;
  letter-spacing:-.02em;line-height:1.16;
}
.hero-sub{margin-top:16px;max-width:680px;font-size:16px;color:rgba(255,255,255,.76);line-height:1.75}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:26px;font-size:13px;color:rgba(255,255,255,.72)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{color:#E08A6A}

/* ---------- 板块 ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:720px;margin-bottom:36px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--celadon);background:rgba(47,107,90,.1);
  border:1px solid rgba(47,107,90,.22);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3.4vw,34px);font-weight:700}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}

/* ---------- 类型卡片 ---------- */
.type-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.type-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.type-grid{grid-template-columns:repeat(3,1fr)}}
.type-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.type-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(217,84,43,.3)}
.type-icon{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:#EFEBE4;color:var(--ink);font-size:16px;margin-bottom:16px;
}
.type-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.type-card p{font-size:14px;color:var(--muted);line-height:1.75}
.type-card .num{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.06em}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:32px}
.timeline::before{
  content:"";position:absolute;left:7px;top:14px;bottom:14px;width:1px;background:var(--line);
}
.tl-item{position:relative;margin-bottom:22px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:-32px;top:26px;width:15px;height:15px;border-radius:50%;
  background:var(--accent);border:3px solid var(--paper);
  box-shadow:0 0 0 1px rgba(217,84,43,.4);
}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(217,84,43,.3)}
.tl-card.has-media{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){
  .tl-card.has-media{grid-template-columns:190px 1fr;gap:22px;align-items:start}
}
.tl-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.tl-thumb img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .2s ease-out}
.tl-card:hover .tl-thumb img{transform:scale(1.03)}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.tl-time{font-size:13px;color:var(--muted)}
.tl-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.tl-card p{font-size:14px;color:var(--muted);line-height:1.75}
.tl-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13px;font-weight:600;color:var(--accent);
  border-bottom:1px dashed rgba(217,84,43,.45);padding-bottom:2px;
  transition:gap .16s ease-out;
}
.tl-link:hover{gap:10px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  background:#EFEBE4;color:var(--ink);border:1px solid var(--line);
}
.badge-celadon{background:rgba(47,107,90,.1);color:var(--celadon);border-color:rgba(47,107,90,.22)}
.badge-accent{background:rgba(217,84,43,.1);color:#B8421F;border-color:rgba(217,84,43,.26)}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}

/* ---------- 图文说明块 ---------- */
.split{display:grid;gap:28px;grid-template-columns:1fr;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1.05fr 1fr;gap:48px}}
.split-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.check-item{display:flex;gap:12px;align-items:flex-start}
.check-mark{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;margin-top:3px;
  background:rgba(47,107,90,.12);color:var(--celadon);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;
}
.check-item strong{display:block;font-size:15px;font-weight:700;margin-bottom:2px}
.check-item span{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--accent);background:rgba(217,84,43,.1);
  font-size:12px;transition:transform .2s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-a p{font-size:14px;line-height:1.85;color:var(--muted);padding:0 46px 20px 0}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;color:#fff;
  background-image:linear-gradient(rgba(18,17,16,.9),rgba(18,17,16,.94)),url('/assets/images/coverpic/cover-7.png');
  background-size:cover;background-position:center;
  padding:40px 26px;
}
@media(min-width:768px){.cta-band{padding:52px 48px}}
.cta-band .cta-inner{display:flex;flex-direction:column;gap:24px;align-items:flex-start}
@media(min-width:900px){
  .cta-band .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}
}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:800;color:#fff}
.cta-band p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 36px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}}
.footer-title{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-list a{font-size:13px;color:var(--muted);transition:color .16s ease-out}
.footer-list a:hover{color:var(--accent)}
.footer-note{font-size:13px;color:var(--muted);line-height:1.8}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--ink-soft);border-bottom:1px solid var(--line)}
.footer-bottom a:hover{color:var(--accent);border-color:rgba(217,84,43,.5)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}

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