/* roulang page: index */
:root{
    --brand:#FF4B21;
    --brand-ink:#C7330F;
    --accent:#B8FF3C;
    --ink:#14161A;
    --ink-2:#3C4148;
    --ink-3:#6B7280;
    --paper:#F7F5F0;
    --surface:#FFFFFF;
    --line:#E6E1D8;
    --amber:#FFB020;
    --radius-card:16px;
    --radius-phone:18px;
    --radius-btn:12px;
    --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 8px 24px -12px rgba(20,22,26,.10);
    --shadow-float:0 12px 32px -8px rgba(20,22,26,.16);
  }

  *{box-sizing:border-box;}

  html{scroll-behavior:smooth;}

  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
    background:var(--paper);
    color:var(--ink-2);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  img{display:block;max-width:100%;}
  a{color:var(--ink-2);text-decoration:none;transition:color .18s ease;}
  a:hover{color:var(--brand);}
  button{font-family:inherit;cursor:pointer;border:none;background:none;}
  ul,ol{list-style:none;margin:0;padding:0;}
  h1,h2,h3,h4,p,dl,dd,figure{margin:0;}

  .num,time,.stat-num,.meta-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  .shell{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
    border-radius:6px;
  }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(20,22,26,.4);}

  .nav-main{
    height:64px;
    display:flex;
    align-items:center;
    transition:height .2s ease;
  }
  .site-header.is-scrolled .nav-main{height:52px;}

  .nav-inner{
    display:flex;
    align-items:center;
    gap:24px;
    width:100%;
  }

  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand:hover{color:var(--ink);}
  .brand-mark{
    width:28px;height:28px;
    border-radius:8px;
    background:var(--brand);
    display:flex;align-items:center;justify-content:center;
    flex:0 0 auto;
    box-shadow:0 6px 14px -8px rgba(255,75,33,.9);
  }
  .brand-mark svg{width:17px;height:17px;display:block;}
  .brand-text{display:flex;align-items:baseline;gap:8px;}
  .brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.4px;}
  .brand-sub{font-size:12px;color:var(--ink-3);}

  .nav-tabs{
    display:flex;
    align-items:center;
    gap:22px;
    overflow-x:auto;
    scrollbar-width:none;
    flex:1 1 auto;
    min-width:0;
  }
  .nav-tabs::-webkit-scrollbar{display:none;}
  .tab{
    position:relative;
    padding:8px 0;
    font-size:15px;
    color:var(--ink-2);
    white-space:nowrap;
    transition:color .18s ease;
  }
  .tab::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    border-radius:2px;
    background:transparent;
    transition:background-color .18s ease;
  }
  .tab:hover{color:var(--brand);}
  .tab.is-active{color:var(--brand);font-weight:600;}
  .tab.is-active::after{background:var(--brand);}

  .nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .search-form{
    display:flex;
    align-items:center;
    gap:8px;
    width:240px;
    height:40px;
    padding:0 14px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--surface);
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  .search-form:focus-within{
    border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(255,75,33,.15);
  }
  .search-form input{
    border:none;
    outline:none;
    background:transparent;
    font-size:14px;
    color:var(--ink);
    width:100%;
    min-width:0;
  }
  .search-form input::placeholder{color:var(--ink-3);}
  .search-form svg{width:16px;height:16px;flex:0 0 auto;color:var(--ink-3);}

  .icon-btn{
    width:44px;height:44px;
    display:none;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--surface);
    color:var(--ink-2);
    transition:border-color .18s ease,color .18s ease;
  }
  .icon-btn:hover{border-color:var(--brand);color:var(--brand);}
  .icon-btn svg{width:18px;height:18px;}

  .channel-row{
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    gap:16px;
    height:46px;
    overflow:hidden;
    transition:height .2s ease, opacity .2s ease;
  }
  .site-header.is-scrolled .channel-row{height:0;opacity:0;border-top-color:transparent;}

  .channel-list{
    display:flex;
    align-items:center;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
    flex:1 1 auto;
    min-width:0;
  }
  .channel-list::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    font-size:12.5px;
    color:var(--ink-2);
    background:rgba(184,255,60,.16);
    white-space:nowrap;
    transition:background-color .18s ease,color .18s ease;
  }
  .chip:hover{background:rgba(184,255,60,.34);color:var(--ink);}
  .chip.is-on{background:var(--brand);color:#fff;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    line-height:1;
    transition:transform .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease, color .18s ease;
  }
  .btn svg{width:16px;height:16px;}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:#ff5f3a;color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(255,75,33,.9);}
  .btn-primary:active{transform:translateY(0) scale(.98);background:var(--brand-ink);}
  .btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0) scale(.98);}
  .btn-onDark{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.22);}
  .btn-onDark:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.4);transform:translateY(-1px);}
  .btn-onDark:active{transform:translateY(0) scale(.98);}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    overflow:hidden;
    background:#14161A;
    color:#fff;
    padding:56px 0 64px;
  }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px);
    pointer-events:none;
  }
  .hero::after{
    content:"";
    position:absolute;
    width:420px;height:420px;
    right:-120px;top:-140px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(184,255,60,.16),transparent 68%);
    pointer-events:none;
  }
  .hero-grid{
    position:relative;
    z-index:1;
    display:grid;
    grid-template-columns:1.38fr 1fr;
    gap:56px;
    align-items:center;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12.5px;
    color:var(--accent);
    border:1px solid rgba(184,255,60,.34);
    background:rgba(184,255,60,.08);
    border-radius:999px;
    padding:5px 12px;
    letter-spacing:.6px;
  }
  .hero h1{
    margin-top:20px;
    font-size:34px;
    line-height:46px;
    font-weight:800;
    color:#fff;
    letter-spacing:.2px;
  }
  .hero-sub{
    margin-top:16px;
    font-size:16px;
    line-height:30px;
    color:rgba(255,255,255,.72);
    max-width:560px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-stats{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:0;
    margin-top:40px;
    border-top:1px solid rgba(255,255,255,.14);
    padding-top:22px;
  }
  .hero-stats > div{padding-right:18px;}
  .hero-stats > div + div{border-left:1px solid rgba(255,255,255,.14);padding-left:18px;}
  .stat-num{
    font-size:24px;
    font-weight:600;
    color:#fff;
    display:flex;
    align-items:baseline;
    gap:3px;
  }
  .stat-num span{font-size:13px;color:var(--accent);font-weight:600;}
  .stat-label{margin-top:6px;font-size:12px;color:rgba(255,255,255,.6);}

  .hero-visual{display:flex;justify-content:flex-end;}
  .phone-card{
    position:relative;
    width:100%;
    max-width:300px;
    aspect-ratio:9/16;
    border-radius:var(--radius-phone);
    overflow:hidden;
    background:#EDEAE3;
    box-shadow:0 30px 60px -30px rgba(0,0,0,.8);
    border:1px solid rgba(255,255,255,.10);
  }
  .phone-card img{
    width:100%;height:100%;object-fit:cover;
    opacity:0;transition:opacity .2s ease, transform .5s ease;
  }
  .phone-card img.is-loaded{opacity:1;}
  .phone-card:hover img{transform:scale(1.03);}
  .phone-card::after{
    content:"";
    position:absolute;left:0;right:0;bottom:0;height:52%;
    background:linear-gradient(to top,rgba(20,22,26,.86),rgba(20,22,26,.28) 52%,transparent);
  }
  .play-btn{
    position:absolute;
    top:50%;left:50%;
    transform:translate(-50%,-50%);
    width:44px;height:44px;
    border-radius:50%;
    background:rgba(255,255,255,.28);
    backdrop-filter:blur(6px);
    display:flex;align-items:center;justify-content:center;
    z-index:2;
    transition:background-color .18s ease, transform .18s ease;
  }
  .play-btn:hover{background:rgba(255,75,33,.9);transform:translate(-50%,-50%) scale(1.06);}
  .play-btn svg{width:15px;height:15px;margin-left:2px;}
  .duration{
    position:absolute;top:12px;right:12px;z-index:2;
    font-size:11.5px;
    background:rgba(20,22,26,.72);
    color:#fff;
    border-radius:999px;
    padding:3px 9px;
    font-variant-numeric:tabular-nums;
  }
  .phone-caption{
    position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
    color:#fff;
  }
  .phone-caption strong{display:block;font-size:14px;font-weight:600;line-height:22px;}
  .phone-caption em{display:block;font-style:normal;font-size:11.5px;color:rgba(255,255,255,.7);margin-top:4px;}

  /* ============ 板块通用 ============ */
  .section{padding:64px 0;}
  .section-tight{padding:44px 0;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:28px;
  }
  .section-title{
    font-size:24px;
    line-height:34px;
    font-weight:700;
    color:var(--ink);
    padding-left:12px;
    border-left:3px solid var(--brand);
  }
  .section-desc{margin-top:8px;font-size:13.5px;color:var(--ink-3);padding-left:15px;}
  .section-link{
    font-size:14px;
    color:var(--ink-2);
    display:inline-flex;
    align-items:center;
    gap:6px;
    white-space:nowrap;
  }
  .section-link:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
  .section-link svg{width:14px;height:14px;}

  /* ============ 横滑流 ============ */
  .snap-row{
    display:flex;
    gap:16px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding-bottom:10px;
    scrollbar-width:thin;
    scrollbar-color:rgba(20,22,26,.18) transparent;
  }
  .snap-row::-webkit-scrollbar{height:6px;}
  .snap-row::-webkit-scrollbar-thumb{background:rgba(20,22,26,.14);border-radius:999px;}
  .snap-row::-webkit-scrollbar-track{background:transparent;}

  .clip-card{
    flex:0 0 240px;
    scroll-snap-align:start;
    position:relative;
    border-radius:var(--radius-phone);
    overflow:hidden;
    aspect-ratio:9/16;
    background:#EDEAE3;
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .clip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-float);}
  .clip-card img{
    width:100%;height:100%;object-fit:cover;
    opacity:0;transition:opacity .2s ease, transform .5s ease;
  }
  .clip-card img.is-loaded{opacity:1;}
  .clip-card:hover img{transform:scale(1.04);}
  .clip-card::after{
    content:"";
    position:absolute;inset:auto 0 0 0;height:64%;
    background:linear-gradient(to top,rgba(20,22,26,.82),rgba(20,22,26,.2) 55%,transparent);
  }
  .clip-title{
    position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
    color:#fff;font-size:14px;line-height:22px;font-weight:600;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .clip-meta{
    position:absolute;left:14px;bottom:56px;z-index:2;
    font-size:11.5px;color:rgba(255,255,255,.78);
  }
  .clip-play{
    position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
    width:44px;height:44px;border-radius:50%;
    background:rgba(255,255,255,.22);
    backdrop-filter:blur(6px);
    display:flex;align-items:center;justify-content:center;z-index:2;
    transition:background-color .18s ease;
  }
  .clip-card:hover .clip-play{background:rgba(255,75,33,.9);}
  .clip-play svg{width:14px;height:14px;margin-left:2px;}
  .clip-tag{
    position:absolute;top:12px;left:12px;z-index:2;
    font-size:11.5px;color:#fff;
    background:rgba(255,75,33,.9);
    border-radius:999px;padding:3px 10px;
  }

  /* ============ 频道卡 ============ */
  .channel-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .channel-card{
    position:relative;
    display:block;
    border-radius:var(--radius-card);
    overflow:hidden;
    background:#fff;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .channel-card:hover{
    transform:translateY(-2px);
    border-color:rgba(255,75,33,.35);
    box-shadow:var(--shadow-float);
    color:inherit;
  }
  .channel-thumb{position:relative;aspect-ratio:16/10;background:#EDEAE3;overflow:hidden;}
  .channel-thumb img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s ease, transform .5s ease;}
  .channel-thumb img.is-loaded{opacity:1;}
  .channel-card:hover .channel-thumb img{transform:scale(1.05);}
  .channel-thumb::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(to top,rgba(20,22,26,.52),transparent 58%);
  }
  .channel-name{
    position:absolute;left:16px;bottom:14px;z-index:2;
    color:#fff;font-size:18px;font-weight:700;letter-spacing:.3px;
  }
  .channel-body{padding:18px 18px 20px;}
  .channel-body p{font-size:13.5px;line-height:24px;color:var(--ink-3);}
  .channel-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
  .tag-pill{
    font-size:12px;
    color:var(--ink-2);
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:999px;
    padding:3px 10px;
  }
  .channel-go{
    display:inline-flex;align-items:center;gap:6px;
    margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand);
  }
  .channel-go svg{width:14px;height:14px;transition:transform .18s ease;}
  .channel-card:hover .channel-go svg{transform:translateX(3px);}

  /* ============ 最新信息 CMS ============ */
  .filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
  .filter-chip{
    display:inline-flex;align-items:center;
    height:34px;padding:0 16px;
    border-radius:999px;
    font-size:13.5px;
    color:var(--ink-2);
    background:var(--paper);
    border:1px solid var(--line);
    transition:background-color .18s ease,color .18s ease,border-color .18s ease;
  }
  .filter-chip:hover{border-color:var(--brand);color:var(--brand);}
  .filter-chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}
  .filter-chip.is-on:hover{color:#fff;}

  .post-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .post-card{
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .post-card:hover{
    transform:translateY(-2px);
    border-color:rgba(255,75,33,.32);
    box-shadow:var(--shadow-float);
  }
  .post-grid .post-card:first-child{grid-column:span 2;}
  .post-cover{
    position:relative;
    aspect-ratio:16/9;
    background:#EDEAE3;
    overflow:hidden;
  }
  .post-grid .post-card:first-child .post-cover{aspect-ratio:21/9;}
  .post-cover img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s ease, transform .5s ease;}
  .post-cover img.is-loaded{opacity:1;}
  .post-card:hover .post-cover img{transform:scale(1.04);}
  .post-badge{
    position:absolute;top:12px;left:12px;z-index:2;
    font-size:12px;color:#fff;
    background:rgba(255,75,33,.9);
    border-radius:999px;
    padding:3px 10px;
  }
  .post-body{padding:18px;display:flex;flex-direction:column;flex:1 1 auto;}
  .post-title{
    font-size:17px;line-height:24px;font-weight:600;color:var(--ink);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    transition:color .18s ease;
  }
  .post-card:hover .post-title{color:var(--brand);}
  .post-grid .post-card:first-child .post-title{font-size:20px;line-height:30px;}
  .post-summary{
    margin-top:10px;
    font-size:13.5px;line-height:23px;color:var(--ink-3);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-meta{
    margin-top:auto;padding-top:16px;
    display:flex;align-items:center;flex-wrap:wrap;gap:12px;
    font-size:12.5px;color:var(--ink-3);
  }
  .post-meta span{display:inline-flex;align-items:center;gap:5px;}
  .post-meta svg{width:13px;height:13px;}

  .empty-state{
    grid-column:1/-1;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:14px;
    padding:56px 24px;
    background:var(--surface);
    border:1px dashed var(--line);
    border-radius:var(--radius-card);
    text-align:center;
  }
  .empty-state svg{width:40px;height:40px;color:var(--ink-3);}
  .empty-state p{font-size:14px;color:var(--ink-3);}

  /* ============ 种草清单 ============ */
  .pick-list{border-top:1px solid var(--line);}
  .pick-row{
    display:grid;
    grid-template-columns:64px 104px 1fr auto;
    align-items:center;
    gap:22px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
    transition:background-color .18s ease;
  }
  .pick-row:hover{background:rgba(255,255,255,.7);}
  .pick-num{
    width:56px;height:56px;
    border-radius:14px;
    background:var(--ink);
    color:var(--accent);
    font-size:20px;
    font-weight:800;
    display:flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
    letter-spacing:.5px;
  }
  .pick-thumb{
    width:104px;height:68px;
    border-radius:12px;
    overflow:hidden;
    background:#EDEAE3;
    flex:0 0 auto;
  }
  .pick-thumb img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s ease;}
  .pick-thumb img.is-loaded{opacity:1;}
  .pick-main h3{font-size:17px;line-height:24px;font-weight:600;color:var(--ink);}
  .pick-main p{margin-top:6px;font-size:13.5px;line-height:23px;color:var(--ink-3);}
  .pick-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end;}
  .pick-tags .tag-pill{background:rgba(184,255,60,.16);border-color:transparent;color:#3d4a15;}

  /* ============ 口碑条 ============ */
  .bubble-row{
    display:flex;
    gap:18px;
    overflow-x:auto;
    padding:16px 0 12px;
    scroll-snap-type:x proximity;
    scrollbar-width:thin;
    scrollbar-color:rgba(20,22,26,.18) transparent;
  }
  .bubble-row::-webkit-scrollbar{height:6px;}
  .bubble-row::-webkit-scrollbar-thumb{background:rgba(20,22,26,.14);border-radius:999px;}
  .bubble{
    position:relative;
    flex:0 0 292px;
    scroll-snap-align:start;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    padding:18px;
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, border-color .2s ease;
  }
  .bubble:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.28);}
  .bubble::before{
    content:"";
    position:absolute;
    top:-7px;left:22px;
    width:12px;height:12px;
    background:var(--surface);
    border-left:1px solid var(--line);
    border-top:1px solid var(--line);
    transform:rotate(45deg);
    border-top-left-radius:3px;
  }
  .bubble-head{display:flex;align-items:center;gap:10px;}
  .avatar{
    width:36px;height:36px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;color:#fff;
    flex:0 0 auto;
  }
  .bubble-name{font-size:14px;font-weight:600;color:var(--ink);}
  .stars{color:var(--amber);font-size:12.5px;letter-spacing:2px;line-height:1;}
  .bubble-text{margin-top:12px;font-size:13.5px;line-height:24px;color:var(--ink-2);}

  /* ============ CTA 大卡 ============ */
  .cta-band{padding:24px 0 8px;}
  .cta-card{
    position:relative;
    overflow:hidden;
    background:#14161A;
    border-radius:22px;
    padding:40px;
    display:grid;
    grid-template-columns:1.5fr 1fr;
    gap:40px;
    align-items:center;
    color:#fff;
  }
  .cta-card::before{
    content:"";
    position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:18px 18px;
    pointer-events:none;
  }
  .cta-card h2{
    position:relative;
    font-size:26px;line-height:38px;font-weight:700;color:#fff;
  }
  .cta-points{position:relative;margin-top:22px;display:flex;flex-direction:column;gap:12px;}
  .cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.78);}
  .cta-points svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;color:var(--accent);}
  .cta-side{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:16px;
  }
  .cta-thumb{
    width:150px;aspect-ratio:9/16;
    border-radius:16px;overflow:hidden;background:#EDEAE3;
    border:1px solid rgba(255,255,255,.12);
  }
  .cta-thumb img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s ease;}
  .cta-thumb img.is-loaded{opacity:1;}
  .cta-count{font-size:12.5px;color:rgba(255,255,255,.6);font-variant-numeric:tabular-nums;}

  /* ============ FAQ ============ */
  .faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:14px;
    overflow:hidden;
    transition:border-color .2s ease, background-color .2s ease;
  }
  .faq-item.is-open{background:rgba(184,255,60,.08);border-color:rgba(184,255,60,.5);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;
    font-size:16px;line-height:24px;font-weight:600;color:var(--ink);
    text-align:left;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-sign{
    position:relative;
    width:20px;height:20px;flex:0 0 auto;
  }
  .faq-sign::before,.faq-sign::after{
    content:"";position:absolute;left:50%;top:50%;
    background:var(--ink-3);
    transition:transform .25s ease, background-color .25s ease;
  }
  .faq-sign::before{width:14px;height:2px;transform:translate(-50%,-50%);}
  .faq-sign::after{width:2px;height:14px;transform:translate(-50%,-50%);}
  .faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);}
  .faq-item.is-open .faq-sign::before{background:var(--brand);}
  .faq-item.is-open .faq-sign::after{background:var(--brand);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .32s ease;
  }
  .faq-a p{
    padding:0 20px 20px;
    font-size:14px;
    line-height:26px;
    color:var(--ink-2);
    max-width:760px;
  }

  /* ============ 页脚 ============ */
  .site-footer{background:#14161A;color:#9AA0A6;margin-top:64px;}
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:40px;
    padding:56px 0 40px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{box-shadow:none;}
  .footer-brand-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.4px;}
  .footer-about{font-size:13.5px;line-height:26px;color:#9AA0A6;max-width:340px;}
  .footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:14px;color:#9AA0A6;}
  .footer-col a:hover{color:var(--accent);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:20px 0 28px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#7C838A;
  }
  .footer-bottom a{color:#9AA0A6;}
  .footer-bottom a:hover{color:var(--accent);}

  /* ============ 移动吸底条 ============ */
  .mobile-bar{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    display:none;
    align-items:center;
    gap:10px;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.96);
    backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
  }
  .mobile-bar .count{font-size:12px;color:var(--ink-3);white-space:nowrap;font-variant-numeric:tabular-nums;}
  .mobile-bar .btn{flex:1 1 auto;padding:0 14px;font-size:14px;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-visual{justify-content:flex-start;}
    .phone-card{max-width:260px;}
    .channel-grid{grid-template-columns:1fr 1fr;}
    .post-grid{grid-template-columns:1fr 1fr;}
    .post-grid .post-card:first-child{grid-column:span 2;}
    .post-grid .post-card:first-child .post-cover{aspect-ratio:16/9;}
    .cta-card{grid-template-columns:1fr;padding:32px;}
    .cta-side{flex-direction:row;justify-content:flex-start;align-items:flex-end;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .pick-row{grid-template-columns:56px 88px 1fr;gap:16px;}
    .pick-tags{grid-column:2 / -1;justify-content:flex-start;}
  }

  @media (max-width:767px){
    .nav-tools .search-form{display:none;}
    .nav-tools .icon-btn{display:flex;}
    .brand-sub{display:none;}
    .nav-inner{gap:14px;}
    .hero{padding:40px 0 48px;}
    .hero h1{font-size:30px;line-height:42px;}
    .hero-stats{grid-template-columns:1fr;gap:14px;border-top:none;padding-top:0;}
    .hero-stats > div{padding:0;border-left:none !important;padding-left:0 !important;}
    .hero-stats > div + div{border-top:1px solid rgba(255,255,255,.14);padding-top:14px;}
    .section{padding:44px 0;}
    .section-title{font-size:21px;line-height:32px;}
    .channel-grid{grid-template-columns:1fr;}
    .post-grid{grid-template-columns:1fr;}
    .post-grid .post-card:first-child{grid-column:span 1;}
    .post-grid .post-card:first-child .post-title{font-size:17px;line-height:24px;}
    .pick-row{grid-template-columns:48px 1fr;gap:14px;padding:18px 0;}
    .pick-thumb{display:none;}
    .pick-num{width:48px;height:48px;font-size:18px;border-radius:12px;}
    .pick-tags{grid-column:1 / -1;justify-content:flex-start;}
    .cta-side{flex-direction:column;align-items:flex-start;}
    .cta-card h2{font-size:22px;line-height:32px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding:40px 0 28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .mobile-bar{display:flex;}
    body{padding-bottom:76px;}
    .clip-card{flex-basis:220px;}
  }

  @media (max-width:520px){
    .shell{padding-left:16px;padding-right:16px;}
    .hero h1{font-size:26px;line-height:38px;}
    .bubble{flex-basis:262px;}
    .faq-q{font-size:15px;padding:16px;}
    .faq-a p{padding:0 16px 18px;}
  }

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

/* roulang page: category1 */
:root{
    --brand:#FF4B21;
    --brand-ink:#C7330F;
    --accent:#B8FF3C;
    --ink:#14161A;
    --ink-2:#3C4148;
    --ink-3:#6B7280;
    --paper:#F7F5F0;
    --surface:#FFFFFF;
    --line:#E6E1D8;
    --amber:#FFB020;
    --placeholder:#EDEAE3;
    --radius-card:16px;
    --radius-portrait:18px;
    --radius-btn:12px;
    --radius-pill:999px;
    --shadow-card:0 1px 2px rgba(20,22,26,.04),0 8px 24px -12px rgba(20,22,26,.10);
    --shadow-pop:0 12px 32px -8px rgba(20,22,26,.16);
    --shell:1240px;
    --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.75;
    color:var(--ink-2);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;background:var(--placeholder);}
  a{color:var(--ink-2);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
  a:hover{color:var(--brand);}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:.2px;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  .shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 2px #fff;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

  /* ============ header ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,245,240,.86);
    backdrop-filter:saturate(160%) blur(12px);
    -webkit-backdrop-filter:saturate(160%) blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.is-stuck{box-shadow:0 6px 24px -14px rgba(20,22,26,.28);}
  .nav-main{height:64px;display:flex;align-items:center;transition:height .2s ease;}
  .site-header.is-stuck .nav-main{height:52px;}
  .nav-inner{display:flex;align-items:center;gap:18px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:28px;height:28px;border-radius:8px;background:var(--brand);
    display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .brand-mark svg{width:18px;height:18px;display:block;}
  .brand-text{display:flex;flex-direction:column;line-height:1.1;}
  .brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.5px;}
  .brand-sub{font-size:12px;color:var(--ink-3);}
  .nav-tabs{display:flex;align-items:center;gap:6px;margin-left:8px;overflow-x:auto;scrollbar-width:none;}
  .nav-tabs::-webkit-scrollbar{display:none;}
  .nav-tabs .tab{
    position:relative;padding:8px 10px;font-size:15px;color:var(--ink-2);white-space:nowrap;
    border-radius:8px;
  }
  .nav-tabs .tab:hover{color:var(--brand);background:rgba(255,75,33,.06);}
  .nav-tabs .tab.is-active{color:var(--brand);font-weight:700;}
  .nav-tabs .tab.is-active::after{
    content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;border-radius:2px;background:var(--brand);
  }
  .nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto;}
  .search-form{
    display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 14px;
    border:1px solid var(--line);border-radius:var(--radius-pill);background:var(--surface);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .search-form svg{width:16px;height:16px;color:var(--ink-3);flex-shrink:0;}
  .search-form input{
    border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);width:100%;
    font-family:inherit;height:100%;
  }
  .search-form input::placeholder{color:var(--ink-3);}
  .search-form:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,75,33,.15);}
  .icon-btn{
    display:none;width:44px;height:44px;border-radius:var(--radius-pill);border:1px solid var(--line);
    background:var(--surface);color:var(--ink-2);align-items:center;justify-content:center;
  }
  .icon-btn svg{width:18px;height:18px;}
  .icon-btn:hover{color:var(--brand);border-color:rgba(255,75,33,.35);}
  .channel-row{border-top:1px solid var(--line);transition:max-height .2s ease,opacity .2s ease;}
  .site-header.is-stuck .channel-row{max-height:0;opacity:0;overflow:hidden;border-top-color:transparent;}
  .channel-list{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:8px 0;scrollbar-width:none;width:100%;}
  .channel-list::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--radius-pill);
    background:rgba(184,255,60,.18);color:var(--ink-2);font-size:13px;white-space:nowrap;
    border:1px solid transparent;
  }
  .chip:hover{background:rgba(184,255,60,.34);color:var(--ink);}
  .chip.is-active{background:var(--brand);color:#fff;border-color:var(--brand);}
  .chip.is-active:hover{background:var(--brand-ink);color:#fff;}

  /* ============ page hero ============ */
  .page-hero{
    position:relative;overflow:hidden;background:var(--ink);color:#fff;
    border-bottom:1px solid var(--line);
  }
  .page-hero__bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    opacity:.32;
  }
  .page-hero__veil{
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(20,22,26,.94) 0%,rgba(20,22,26,.78) 46%,rgba(20,22,26,.42) 100%);
  }
  .page-hero__dots{
    position:absolute;inset:0;opacity:.06;
    background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
    background-size:18px 18px;
  }
  .page-hero__inner{position:relative;padding:34px 0 40px;}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);}
  .crumb a{color:rgba(255,255,255,.78);}
  .crumb a:hover{color:var(--accent);}
  .crumb .sep{color:rgba(255,255,255,.4);}
  .crumb .current{color:rgba(255,255,255,.55);}
  .page-hero h1{
    color:#fff;font-size:30px;line-height:1.34;font-weight:800;margin-top:16px;max-width:820px;
  }
  .page-hero h1 .hl{color:var(--accent);}
  .page-hero__lead{
    margin-top:12px;max-width:760px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.76);
  }
  .hero-facts{
    display:flex;flex-wrap:wrap;gap:0;margin-top:24px;border-top:1px solid rgba(255,255,255,.14);
  }
  .hero-fact{
    flex:1 1 160px;padding:14px 20px 0 0;margin-right:20px;border-right:1px solid rgba(255,255,255,.14);
  }
  .hero-fact:last-child{border-right:0;margin-right:0;}
  .hero-fact b{display:block;font-size:24px;font-weight:600;color:#fff;line-height:1.2;}
  .hero-fact span{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.4px;}

  /* ============ sections ============ */
  .section{padding:56px 0;}
  .section--tight{padding:44px 0 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
  .section-head h2{font-size:24px;line-height:1.35;position:relative;padding-left:14px;}
  .section-head h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
  }
  .section-head p{margin-top:8px;font-size:14px;color:var(--ink-3);max-width:640px;}
  .link-more{font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
  .link-more:hover{color:var(--brand-ink);text-decoration:underline;text-underline-offset:4px;}

  .filter-bar{
    display:flex;align-items:center;gap:10px;overflow-x:auto;padding:18px 0 4px;scrollbar-width:none;
  }
  .filter-bar::-webkit-scrollbar{display:none;}
  .f-chip{
    display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--radius-pill);
    background:var(--paper);border:1px solid var(--line);color:var(--ink-2);font-size:14px;white-space:nowrap;
    transition:all .18s ease;
  }
  .f-chip:hover{border-color:rgba(255,75,33,.35);color:var(--brand);transform:translateY(-1px);}
  .f-chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
  .f-chip.is-active:hover{background:var(--brand-ink);color:#fff;}

  /* ============ portrait grid ============ */
  .portrait-grid{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px;
  }
  .v-card{display:flex;flex-direction:column;gap:10px;}
  .v-card__media{
    position:relative;display:block;aspect-ratio:9/16;border-radius:var(--radius-portrait);overflow:hidden;
    background:var(--placeholder);box-shadow:var(--shadow-card);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    border:1px solid var(--line);
  }
  .v-card__media img{
    width:100%;height:100%;object-fit:cover;transition:transform .35s ease,opacity .2s ease;
  }
  .v-card:hover .v-card__media{transform:translateY(-2px);border-color:rgba(255,75,33,.35);box-shadow:var(--shadow-pop);}
  .v-card:hover .v-card__media img{transform:scale(1.03);}
  .v-card__shade{
    position:absolute;left:0;right:0;bottom:0;height:56%;
    background:linear-gradient(to top,rgba(20,22,26,.86),rgba(20,22,26,0));
  }
  .v-card__duration{
    position:absolute;top:10px;right:10px;height:24px;padding:0 9px;border-radius:var(--radius-pill);
    background:rgba(20,22,26,.72);color:#fff;font-size:12px;display:inline-flex;align-items:center;
    font-variant-numeric:tabular-nums;
  }
  .v-card__badge{
    position:absolute;top:10px;left:10px;height:24px;padding:0 10px;border-radius:var(--radius-pill);
    background:rgba(255,75,33,.92);color:#fff;font-size:12px;display:inline-flex;align-items:center;font-weight:600;
  }
  .v-card__play{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.28);
    border:1px solid rgba(255,255,255,.55);display:flex;align-items:center;justify-content:center;
    transition:background .2s ease,transform .2s ease;
  }
  .v-card__play::after{
    content:"";margin-left:3px;border-left:12px solid #fff;border-top:8px solid transparent;border-bottom:8px solid transparent;
  }
  .v-card:hover .v-card__play{background:rgba(255,75,33,.86);transform:translate(-50%,-50%) scale(1.06);}
  .v-card__title{
    position:absolute;left:12px;right:12px;bottom:12px;color:#fff;font-size:15px;font-weight:600;line-height:1.45;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .v-card__meta{
    display:flex;align-items:center;gap:12px;font-size:12px;color:var(--ink-3);
  }
  .v-card__meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
  .v-card__name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .v-card__name a{color:var(--ink);}
  .v-card__name a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}

  /* ============ pagination ============ */
  .pager{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:36px;}
  .pager a,.pager span{
    min-width:42px;height:42px;padding:0 14px;border-radius:var(--radius-pill);border:1px solid var(--line);
    background:var(--surface);color:var(--ink-2);font-size:14px;display:inline-flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
  }
  .pager a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
  .pager .is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700;}
  .pager__note{margin-top:14px;text-align:center;font-size:13px;color:var(--ink-3);}

  /* ============ seo block ============ */
  .seo-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;box-shadow:var(--shadow-card);
  }
  .seo-panel h3{font-size:18px;margin-bottom:12px;}
  .seo-panel p{font-size:15px;color:var(--ink-2);margin-bottom:12px;}
  .seo-panel p:last-child{margin-bottom:0;}
  .seo-body{overflow:hidden;max-height:0;transition:max-height .3s ease;}
  .seo-body.is-open{max-height:1400px;}
  .seo-toggle{
    margin-top:16px;display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
    border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--paper);color:var(--ink-2);
    font-size:14px;font-weight:600;
  }
  .seo-toggle:hover{border-color:var(--brand);color:var(--brand);}
  .seo-toggle svg{width:14px;height:14px;transition:transform .25s ease;}
  .seo-toggle.is-open svg{transform:rotate(180deg);}

  /* ============ faq ============ */
  .faq-list{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
    transition:background .2s ease,border-color .2s ease;
  }
  .faq-item.is-open{background:rgba(184,255,60,.08);border-color:rgba(255,75,33,.28);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;background:transparent;border:0;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;min-height:44px;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
    display:inline-flex;align-items:center;justify-content:center;color:var(--brand);font-size:16px;line-height:1;
    transition:transform .25s ease,background .2s ease;
  }
  .faq-item.is-open .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff;transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
  .faq-item.is-open .faq-a{max-height:420px;}
  .faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.78;color:var(--ink-2);}

  /* ============ cta ============ */
  .cta-band{
    position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:20px;
    padding:34px;display:flex;gap:28px;align-items:center;justify-content:space-between;flex-wrap:wrap;
  }
  .cta-band__dots{
    position:absolute;inset:0;opacity:.06;
    background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:16px 16px;
  }
  .cta-band__text{position:relative;max-width:620px;}
  .cta-band h2{color:#fff;font-size:22px;line-height:1.4;}
  .cta-band p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.8;}
  .cta-band__acts{position:relative;display:flex;gap:12px;flex-wrap:wrap;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;
    border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .16s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn:active{transform:translateY(0) scale(.98);}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.36);}
  .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-1px);}
  .btn-outline{background:var(--surface);color:var(--ink-2);border-color:var(--line);}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}

  /* ============ footer ============ */
  .site-footer{background:var(--ink);color:#9AA0A6;margin-top:64px;padding:56px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-brand-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.4px;}
  .footer-about{margin-top:14px;font-size:14px;line-height:1.85;color:#9AA0A6;max-width:380px;}
  .footer-col h3{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700;}
  .footer-col li{margin-bottom:10px;}
  .footer-col a{font-size:14px;color:#9AA0A6;}
  .footer-col a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:13px;color:#7C838B;
  }
  .footer-bottom a{color:#9AA0A6;}
  .footer-bottom a:hover{color:var(--accent);}

  /* ============ mobile sticky bar ============ */
  .mobile-bar{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(247,245,240,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    gap:10px;
  }
  .mobile-bar .btn{flex:1;min-height:46px;font-size:14px;padding:0 12px;}

  /* ============ responsive ============ */
  @media (min-width:640px){
    .portrait-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
    .page-hero h1{font-size:32px;}
  }
  @media (min-width:1024px){
    .portrait-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
    .section{padding:80px 0;}
    .page-hero__inner{padding:48px 0 56px;}
    .page-hero h1{font-size:34px;line-height:1.35;}
    .seo-panel{padding:34px;}
  }
  @media (max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }
  @media (max-width:767px){
    .shell{padding:0 16px;}
    .brand-sub{display:none;}
    .search-form{display:none;}
    .icon-btn{display:inline-flex;}
    .nav-tabs{display:none;}
    .mobile-bar{display:flex;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .cta-band{padding:24px;}
    .hero-fact{flex:1 1 100%;border-right:0;margin-right:0;padding-right:0;}
    .hero-fact b{font-size:20px;}
    body{padding-bottom:78px;}
  }
  @media (max-width:520px){
    .page-hero h1{font-size:25px;}
    .portrait-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
    .v-card__title{font-size:13px;left:10px;right:10px;bottom:10px;}
    .pager a,.pager span{min-width:40px;height:40px;padding:0 11px;font-size:13px;}
  }

/* roulang page: article */
:root{
  --brand:#FF4B21;
  --brand-ink:#C7330F;
  --accent:#B8FF3C;
  --ink:#14161A;
  --ink-2:#3C4148;
  --ink-3:#6B7280;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E6E1D8;
  --amber:#FFB020;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 8px 24px -12px rgba(20,22,26,.10);
  --shadow-float:0 12px 32px -8px rgba(20,22,26,.16);
  --shell:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;background:#EDEAE3;}
a{color:var(--ink-2);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,255,255,.9);}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 16px;}
@media (min-width:768px){.shell{padding:0 24px;}}
.num{font-variant-numeric:tabular-nums;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.9);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:padding .2s ease;
}
.nav-main{padding:8px 0;}
.nav-inner{display:flex;align-items:center;gap:18px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(255,75,33,.75);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:12px;color:var(--ink-3);}
.nav-tabs{display:none;flex:1 1 auto;align-items:center;gap:4px;overflow-x:auto;}
.nav-tabs .tab{
  position:relative;white-space:nowrap;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.nav-tabs .tab:hover{color:var(--brand);background:rgba(255,75,33,.06);}
.nav-tabs .tab.is-active{color:var(--brand);}
.nav-tabs .tab.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-form{
  display:none;align-items:center;gap:8px;height:42px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-form:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,75,33,.15);}
.search-form svg{width:17px;height:17px;color:var(--ink-3);flex:0 0 auto;}
.search-form input{border:0;outline:none;background:transparent;width:180px;font-size:14px;}
.search-form input::placeholder{color:var(--ink-3);}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;background:var(--surface);color:var(--ink-2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.channel-row{border-top:1px solid var(--line);background:rgba(255,255,255,.6);}
.channel-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:9px;padding-bottom:9px;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(184,255,60,.16);color:var(--ink-2);white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.chip:hover{background:rgba(184,255,60,.34);color:var(--ink);}
@media (min-width:880px){
  .nav-tabs{display:flex;}
  .search-form{display:flex;}
}
@media (min-width:880px){ .icon-btn{display:none;} }

/* ============ article head ============ */
.article-head{
  background:
    radial-gradient(1200px 380px at 12% -30%, rgba(255,75,33,.30), transparent 62%),
    linear-gradient(160deg,#14161A 0%,#1D2026 100%);
  color:#EDEAE3;padding:34px 0 46px;position:relative;overflow:hidden;
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 12px);
}
.crumbs{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9AA0A6;margin-bottom:16px;}
.crumbs a{color:#C9CDD3;}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:#5C6169;}
.crumbs .now{color:#8A9099;}
.article-title{
  position:relative;z-index:1;color:#FFFFFF;font-size:30px;line-height:1.4;font-weight:800;
  max-width:940px;letter-spacing:.2px;
}
.meta-row{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;margin-top:18px;font-size:13px;color:#A7ADB5;}
.meta-row .pill{
  padding:4px 12px;border-radius:999px;background:rgba(255,75,33,.16);color:#FFB9A5;font-weight:600;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#4C525A;}
@media (min-width:1024px){ .article-title{font-size:34px;line-height:1.42;} }

/* ============ layout ============ */
.page-body{padding:32px 0 64px;}
.article-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr) 320px;gap:44px;}
}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);}

.hero-figure{margin:0 0 26px;}
.hero-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);opacity:0;animation:fadeIn .5s ease forwards;
}
.hero-figure figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);}
@keyframes fadeIn{to{opacity:1;}}

.article-main{min-width:0;}
.article-body{max-width:760px;font-size:16px;line-height:1.78;color:var(--ink-2);}
.article-body p{margin:0 0 .95em;}
.article-body h2{
  position:relative;margin:1.7em 0 .65em;padding-left:14px;font-size:24px;font-weight:700;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand);
}
.article-body h3{margin:1.3em 0 .5em;font-size:18px;font-weight:600;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1em;padding-left:1.25em;}
.article-body ul li{list-style:disc;margin:.35em 0;}
.article-body ol li{list-style:decimal;margin:.35em 0;}
.article-body img{border-radius:12px;margin:14px 0;border:1px solid var(--line);}
.article-body blockquote{
  margin:1.2em 0;padding:14px 18px;border-left:3px solid var(--brand);
  background:#FBF8F4;border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body thead th{background:#F1EDE5;font-weight:600;color:var(--ink);}
.article-body tbody tr:nth-child(even){background:#FAF8F4;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(255,75,33,.35);}
.article-body strong{color:var(--ink);}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:56px 20px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
}
.empty-state svg{width:42px;height:42px;color:var(--ink-3);}
.empty-state strong{font-size:17px;color:var(--ink);}
.empty-state span{font-size:14px;color:var(--ink-3);}

.tags-row{display:flex;flex-wrap:wrap;gap:9px;margin:34px 0 0;}
.tags-row .tag{
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:#F1EDE5;color:var(--ink-2);border:1px solid var(--line);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.tags-row .tag:hover{background:rgba(184,255,60,.28);border-color:rgba(184,255,60,.6);color:var(--ink);}

.author-card{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;padding:18px 20px;
}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#FF8A5C);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px;
}
.author-card .a-name{font-weight:700;color:var(--ink);font-size:15px;}
.author-card .a-desc{font-size:13px;color:var(--ink-3);}
.author-card .a-time{margin-left:auto;font-size:13px;color:var(--ink-3);}

/* ============ sidebar ============ */
.side-col{display:flex;flex-direction:column;gap:20px;}
@media (min-width:1024px){ .side-col{position:sticky;top:104px;align-self:start;} }
.side-card{padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);}
.side-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto;}
.toc-link{
  display:block;padding:7px 10px;border-radius:9px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;transition:all .18s ease;
}
.toc-link:hover{background:#F6F3EE;color:var(--brand);}
.toc-link.is-current{color:var(--brand);background:rgba(255,75,33,.07);border-left-color:var(--brand);font-weight:600;}
.toc-empty{font-size:13px;color:var(--ink-3);}
.hot-list{display:flex;flex-direction:column;gap:14px;}
.hot-item{display:flex;gap:12px;align-items:flex-start;}
.hot-item .idx{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:#F1EDE5;color:var(--ink-3);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.hot-item .idx.top{background:var(--brand);color:#fff;}
.hot-item a{font-size:14px;line-height:1.55;color:var(--ink-2);}
.hot-item a:hover{color:var(--brand);}

/* ============ sections ============ */
.section{padding:48px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px;margin-bottom:22px;}
.section-head h2{font-size:22px;font-weight:700;}
.section-head p{font-size:14px;color:var(--ink-3);}
.section-head .more{margin-left:auto;font-size:14px;font-weight:600;color:var(--brand);}

.card-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:640px){ .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:1024px){ .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));} }

.post-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.32);box-shadow:var(--shadow-float);}
.post-card .thumb{position:relative;}
.post-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-card .badge{
  position:absolute;left:12px;top:12px;padding:4px 11px;border-radius:999px;
  background:rgba(255,75,33,.92);color:#fff;font-size:12px;font-weight:600;
}
.post-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1;}
.post-card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card h3 a{color:var(--ink);}
.post-card h3 a:hover{color:var(--brand);}
.post-card .excerpt{font-size:14px;color:var(--ink-3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);}
.post-card .meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}

/* channel entry */
.channel-cards{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:768px){ .channel-cards{grid-template-columns:repeat(3,minmax(0,1fr));} }
.channel-card{
  position:relative;overflow:hidden;border-radius:18px;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.channel-card:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.32);box-shadow:var(--shadow-float);}
.channel-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.channel-card .c-body{padding:18px 20px 20px;}
.channel-card h3{font-size:18px;font-weight:700;}
.channel-card p{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.7;}
.channel-card .c-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand);}

/* prev next */
.pager{display:grid;grid-template-columns:1fr;gap:14px;margin-top:34px;}
@media (min-width:768px){ .pager{grid-template-columns:repeat(2,minmax(0,1fr));} }
.pager a{
  display:flex;flex-direction:column;gap:6px;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:var(--surface);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.pager a:hover{border-color:rgba(255,75,33,.32);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.pager .p-label{font-size:12.5px;color:var(--ink-3);font-weight:600;}
.pager .p-title{font-size:15px;font-weight:600;color:var(--ink);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{background:rgba(184,255,60,.09);border-color:rgba(184,255,60,.55);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;padding:16px 18px;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;min-height:44px;
}
.faq-q .ico{
  margin-left:auto;width:22px;height:22px;flex:0 0 auto;position:relative;transition:transform .22s ease;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-3);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .ico::before{width:12px;height:2px;}
.faq-q .ico::after{width:2px;height:12px;}
.faq-item.is-open .faq-q .ico{transform:rotate(135deg);}
.faq-item.is-open .faq-q .ico::before,.faq-item.is-open .faq-q .ico::after{background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 18px 18px;font-size:15px;line-height:1.78;color:var(--ink-2);}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;padding:34px 26px;
  background:radial-gradient(700px 300px at 88% -40%, rgba(255,75,33,.34), transparent 62%), linear-gradient(150deg,#14161A,#1E2128);
  color:#DCD8D2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:14px 14px;
}
.cta-band .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:900px){ .cta-band .cta-inner{grid-template-columns:1.5fr 1fr;align-items:center;} }
.cta-band h2{color:#fff;font-size:24px;font-weight:700;}
.cta-band .cta-sub{margin-top:10px;font-size:15px;color:#A7ADB5;max-width:560px;}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;}
.cta-points .tick{
  width:20px;height:20px;flex:0 0 auto;border-radius:50%;background:rgba(184,255,60,.2);
  display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:12px;font-weight:800;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .16s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(255,75,33,.9);}
.btn-primary:hover{background:#FF6134;color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0) scale(.98);background:var(--brand-ink);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0) scale(.98);}
.btn-on-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:#fff;}
.btn-on-dark:hover{background:rgba(184,255,60,.16);border-color:rgba(184,255,60,.5);color:var(--accent);}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#9AA0A6;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;padding:46px 0 30px;}
@media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;} }
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand-name{color:#fff;font-size:17px;font-weight:800;}
.footer-about{font-size:14px;line-height:1.8;color:#8B9199;max-width:360px;}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#9AA0A6;font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;font-size:13px;color:#7E848C;
}
.footer-bottom a{color:#9AA0A6;}
.footer-bottom a:hover{color:var(--accent);}

@media (max-width:519px){
  .article-title{font-size:26px;}
  .section{padding:36px 0;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --brand:#FF4B21;
  --brand-ink:#C7330F;
  --accent:#B8FF3C;
  --ink:#14161A;
  --ink-2:#3C4148;
  --ink-3:#6B7280;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E6E1D8;
  --amber:#FFB020;
  --r-card:16px;
  --r-video:18px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(20,22,26,.04),0 8px 24px -12px rgba(20,22,26,.10);
  --sh-pop:0 12px 32px -8px rgba(20,22,26,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",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:var(--ink-2);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease}
a:hover{color:var(--brand)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ol,ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.num{font-variant-numeric:tabular-nums}

/* 容器 */
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.shell{padding:0 16px}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.9);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-compact{box-shadow:0 10px 26px -20px rgba(20,22,26,.5)}
.nav-main{height:64px;display:flex;align-items:center;transition:height .2s ease}
.site-header.is-compact .nav-main{height:52px}
.nav-inner{display:flex;align-items:center;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:18px;height:18px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.2px}
.brand-sub{font-size:12px;color:var(--ink-3)}
.nav-tabs{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{position:relative;flex:0 0 auto;padding:8px 12px;font-size:15px;font-weight:600;color:var(--ink-2);border-radius:10px;white-space:nowrap}
.tab:hover{color:var(--brand);background:rgba(255,75,33,.07)}
.tab.is-active{color:var(--brand)}
.tab.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--brand)}
.nav-tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.search-form{position:relative;display:flex;align-items:center;width:240px}
.search-form svg{position:absolute;left:12px;width:16px;height:16px;color:var(--ink-3);pointer-events:none}
.search-form input{width:100%;height:40px;padding:0 14px 0 36px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:14px;transition:border-color .18s ease,box-shadow .18s ease}
.search-form input::placeholder{color:var(--ink-3)}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,75,33,.15)}
.icon-btn{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;color:var(--ink-2);border:1px solid var(--line);background:var(--surface)}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--brand);border-color:rgba(255,75,33,.4)}
.channel-row{border-top:1px solid var(--line);background:rgba(255,255,255,.55);max-height:64px;overflow:hidden;transition:max-height .2s ease,opacity .2s ease}
.site-header.is-compact .channel-row{max-height:0;opacity:0;border-top-color:transparent}
.channel-list{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px 0;flex:1 1 auto;min-width:0;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:rgba(184,255,60,.20);color:var(--ink-2);font-size:13px;font-weight:500;white-space:nowrap;min-height:32px}
.chip:hover{background:rgba(184,255,60,.45);color:var(--ink)}

/* 首屏 */
.page-hero{
  position:relative;
  background-image:linear-gradient(115deg,rgba(20,22,26,.96) 0%,rgba(20,22,26,.88) 44%,rgba(20,22,26,.68) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:18px 18px;
}
.hero-inner{position:relative;z-index:1;padding:48px 0 44px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9AA0A6;margin-bottom:18px}
.crumb a{color:#9AA0A6}
.crumb a:hover{color:var(--accent);text-decoration:underline}
.crumb .sep{color:#5B6169}
.crumb .now{color:#C9CDD3}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;background:rgba(184,255,60,.16);color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.4px;margin-bottom:16px}
.hero-kicker i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.page-hero h1{font-size:30px;line-height:40px;font-weight:800;color:#fff;letter-spacing:.3px;max-width:840px}
.hero-note{margin-top:14px;font-size:15px;line-height:1.8;color:#C4C9CF;max-width:760px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:28px;max-width:640px;border-top:1px solid rgba(255,255,255,.14)}
.hero-stat{padding:16px 18px 4px 0;border-right:1px solid rgba(255,255,255,.14)}
.hero-stat:last-child{border-right:0;padding-right:0}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{display:block;margin-top:4px;font-size:12px;color:#9AA0A6;letter-spacing:.3px}

/* 板块 */
.section{padding:56px 0}
.section-tight{padding:44px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.section-title{display:flex;align-items:center;gap:12px;font-size:24px;line-height:32px;font-weight:700;color:var(--ink)}
.section-title::before{content:"";width:3px;height:22px;border-radius:2px;background:var(--brand);flex:0 0 auto}
.section-sub{margin-top:8px;font-size:14px;color:var(--ink-3);max-width:760px}
.section-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);min-height:44px}
.section-link:hover{color:var(--brand-ink);text-decoration:underline}

/* 筛选 */
.filter-bar{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-bottom:4px;margin-bottom:18px;scrollbar-width:none}
.filter-bar::-webkit-scrollbar{display:none}
.filter-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0}
.filter-chips .chip{background:var(--surface);border:1px solid var(--line);color:var(--ink-2);height:36px;padding:0 16px;font-size:13.5px}
.filter-chips .chip:hover{border-color:rgba(255,75,33,.5);color:var(--brand);background:var(--surface)}
.filter-chips .chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.filter-chips .chip.is-active:hover{background:var(--brand-ink);border-color:var(--brand-ink);color:#fff}

/* 榜单主从布局 */
.rank-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:24px;align-items:start}
.rank-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 20px 12px}
.rank-list{border-top:1px solid var(--line)}
.rank-item{
  display:grid;grid-template-columns:56px 104px minmax(0,1fr) 112px;gap:16px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,transform .2s ease;
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:rgba(247,245,240,.85)}
.rank-no{font-size:28px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1;letter-spacing:.5px}
.rank-item:nth-child(-n+3) .rank-no{color:var(--brand)}
.rank-thumb{display:block;border-radius:12px;overflow:hidden;background:#EDEAE3;aspect-ratio:4/3}
.rank-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rank-item:hover .rank-thumb img{transform:scale(1.05)}
.rank-body{min-width:0}
.rank-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.tag{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:rgba(255,75,33,.09);color:var(--brand-ink);font-size:12px;font-weight:600}
.tag.tag-accent{background:rgba(184,255,60,.28);color:#3E5A00}
.rank-title{font-size:17px;line-height:24px;font-weight:600;color:var(--ink)}
.rank-title a{color:inherit}
.rank-title a:hover{color:var(--brand)}
.rank-desc{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rank-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:10px;font-size:12.5px;color:var(--ink-3)}
.rank-meta time{font-variant-numeric:tabular-nums}
.rank-stats{text-align:right}
.stat-num{display:block;font-size:22px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.25}
.stat-label{display:block;font-size:12px;color:var(--ink-3);margin-top:2px}
.stat-trend{display:inline-flex;align-items:center;gap:4px;margin-top:6px;font-size:12px;font-weight:600;color:#4B7A00}

/* 侧栏 */
.rank-side{position:sticky;top:96px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:20px}
.side-card+.side-card{margin-top:20px}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.side-head h3{font-size:17px;font-weight:700;color:var(--ink)}
.side-head span{font-size:12px;color:var(--ink-3)}
.top-item{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line)}
.top-item:last-child{border-bottom:0;padding-bottom:0}
.top-no{width:26px;height:26px;border-radius:8px;background:rgba(255,75,33,.10);color:var(--brand);font-size:13px;font-weight:700;display:grid;place-items:center;flex:0 0 auto;font-variant-numeric:tabular-nums}
.top-item a{font-size:14px;line-height:1.6;color:var(--ink-2);flex:1 1 auto;min-width:0}
.top-item a:hover{color:var(--brand)}
.top-score{font-size:14px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;flex:0 0 auto}
.side-note{font-size:13px;line-height:1.8;color:var(--ink-3)}
.side-note strong{color:var(--ink);font-weight:600}

/* 指标卡 */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.metric-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--sh-card);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.3);box-shadow:var(--sh-pop)}
.metric-idx{font-size:13px;font-weight:700;color:var(--accent);background:var(--ink);border-radius:8px;padding:3px 9px;display:inline-block;font-variant-numeric:tabular-nums}
.metric-card h3{margin-top:14px;font-size:17px;line-height:24px;font-weight:600;color:var(--ink)}
.metric-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-3)}
.metric-weight{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.metric-weight b{color:var(--brand-ink);font-size:16px;font-weight:700;font-variant-numeric:tabular-nums}

/* 对照表 */
.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card)}
.cmp-table{min-width:660px}
.cmp-table th,.cmp-table td{padding:15px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);vertical-align:top}
.cmp-table thead th{background:#F1EDE5;color:var(--ink);font-size:13.5px;font-weight:700;letter-spacing:.3px;white-space:nowrap}
.cmp-table tbody tr:nth-child(even){background:#FBF9F5}
.cmp-table tbody tr:hover{background:rgba(184,255,60,.14)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td:first-child{color:var(--ink);font-weight:600}
.cmp-table .num{font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink)}
.table-tip{margin-top:14px;font-size:13px;color:var(--ink-3)}

/* FAQ */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:rgba(255,75,33,.35)}
.faq-item.is-open{background:rgba(184,255,60,.08);border-color:rgba(255,75,33,.32);box-shadow:var(--sh-card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 20px;text-align:left;font-size:16px;line-height:24px;font-weight:600;color:var(--ink);min-height:44px}
.faq-sign{position:relative;width:20px;height:20px;flex:0 0 auto;border-radius:50%;background:rgba(255,75,33,.12);transition:transform .25s ease,background-color .25s ease}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%)}
.faq-sign::before{width:10px;height:2px}
.faq-sign::after{width:2px;height:10px;transition:transform .25s ease}
.faq-item.is-open .faq-sign{background:var(--brand);transform:rotate(180deg)}
.faq-item.is-open .faq-sign::before{background:#fff}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);background:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 20px 18px;font-size:15px;line-height:1.75;color:var(--ink-2)}

/* CTA 条 */
.cta-band{position:relative;overflow:hidden;background:var(--ink);border-radius:20px;padding:32px 34px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:16px 16px}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-copy h2{font-size:22px;line-height:32px;font-weight:700;color:#fff}
.cta-copy p{margin-top:10px;font-size:14px;line-height:1.8;color:#A9AFB6}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:transform .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px rgba(255,75,33,.9)}
.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-outline:hover{color:var(--brand);border-color:rgba(255,75,33,.45);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0) scale(.98)}
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* 页脚 */
.site-footer{background:var(--ink);color:#9AA0A6;margin-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:56px 0 32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand-name{color:#fff;font-size:17px;font-weight:800}
.footer-about{font-size:14px;line-height:1.85;color:#9AA0A6;max-width:360px}
.footer-col h3{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.3px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#9AA0A6}
.footer-col a:hover{color:var(--accent);text-decoration:none}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 34px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7C838A}
.footer-bottom a{color:#9AA0A6}
.footer-bottom a:hover{color:var(--accent)}

/* 响应式 */
@media (max-width:1180px){
  .rank-grid{grid-template-columns:minmax(0,1fr) 300px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .rank-grid{grid-template-columns:minmax(0,1fr)}
  .rank-side{position:static;margin-top:4px}
  .rank-side .side-card+.side-card{margin-top:16px}
}
@media (max-width:900px){
  .search-form{display:none}
  .icon-btn{display:inline-flex}
  .nav-tabs{gap:0}
  .tab{padding:8px 10px;font-size:14px}
}
@media (max-width:768px){
  .brand-sub{display:none}
  .page-hero h1{font-size:26px;line-height:36px}
  .section{padding:44px 0}
  .section-title{font-size:21px;line-height:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:44px 0 26px}
  .footer-about{max-width:none}
}
@media (max-width:640px){
  .rank-item{grid-template-columns:40px 76px minmax(0,1fr);gap:12px;align-items:start;padding:16px 0}
  .rank-no{font-size:24px}
  .rank-stats{grid-column:3;display:flex;align-items:baseline;gap:10px;text-align:left}
  .stat-num{font-size:18px;display:inline}
  .metric-grid{grid-template-columns:minmax(0,1fr)}
  .hero-stats{grid-template-columns:minmax(0,1fr);border-top:0}
  .hero-stat{border-right:0;border-top:1px solid rgba(255,255,255,.14);padding:14px 0 2px}
  .cta-band{padding:26px 22px;border-radius:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --brand:#FF4B21;
  --brand-ink:#C7330F;
  --accent:#B8FF3C;
  --ink:#14161A;
  --ink-2:#3C4148;
  --ink-3:#6B7280;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E6E1D8;
  --amber:#FFB020;
  --r-card:16px;
  --r-video:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 8px 24px -12px rgba(20,22,26,.10);
  --shadow-pop:0 12px 32px -8px rgba(20,22,26,.16);
  --shell:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
  background:var(--paper);
  color:var(--ink-2);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink-2);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--brand)}
button{font:inherit;color:inherit;background:none;border:0}
input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
.num,.n,.metric-value,.hero-stat .n,.footer-bottom{font-variant-numeric:tabular-nums}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px}
@media(max-width:640px){.shell{padding:0 16px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(20,22,26,.55)}
.nav-main{display:flex;align-items:center;height:64px;transition:height .2s ease}
.site-header.is-stuck .nav-main{height:52px}
.nav-inner{display:flex;align-items:center;gap:20px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:grid;place-items:center;flex:none}
.brand-mark svg{width:18px;height:18px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.brand-sub{font-size:12px;color:var(--ink-3)}
.nav-tabs{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{position:relative;padding:9px 12px;font-size:14.5px;color:var(--ink-2);white-space:nowrap;border-radius:8px;transition:color .18s ease,background-color .18s ease}
.tab:hover{color:var(--brand);background:rgba(255,75,33,.06)}
.tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.tab.is-active{color:var(--brand);font-weight:600}
.tab.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand)}
.nav-tools{display:flex;align-items:center;gap:10px;flex:none}
.search-form{position:relative;display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);transition:border-color .18s ease,box-shadow .18s ease}
.search-form svg{width:16px;height:16px;color:var(--ink-3);flex:none}
.search-form input{width:100%;border:0;outline:0;background:transparent;font-size:14px}
.search-form input::placeholder{color:var(--ink-3)}
.search-form:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,75,33,.15)}
.icon-btn{width:44px;height:44px;display:none;place-items:center;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);color:var(--ink-2);cursor:pointer}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--brand);border-color:rgba(255,75,33,.35)}
.icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.channel-row{max-height:54px;overflow:hidden;border-top:1px solid rgba(230,225,216,.75);transition:max-height .2s ease,opacity .2s ease}
.site-header.is-stuck .channel-row{max-height:0;opacity:0}
.channel-row .shell{display:flex;align-items:center;gap:16px;padding-top:8px;padding-bottom:8px;overflow-x:auto;scrollbar-width:none}
.channel-row .shell::-webkit-scrollbar{display:none}
.channel-list{display:flex;align-items:center;gap:10px}
.chip{
  flex:none;display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(184,255,60,.22);border:1px solid rgba(184,255,60,.55);
  color:var(--ink-2);font-size:13px;line-height:1.4;white-space:nowrap;transition:background-color .18s ease,color .18s ease;
}
.chip:hover{background:rgba(184,255,60,.45);color:var(--ink)}
.chip:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@media(max-width:1023px){
  .search-form{display:none}
  .icon-btn{display:grid}
  .nav-inner{gap:12px}
}
@media(max-width:767px){
  .nav-main{height:auto;min-height:56px;padding:6px 0}
  .nav-inner{flex-wrap:wrap;gap:6px 12px}
  .brand-sub{display:none}
  .nav-tabs{order:3;flex:1 0 100%;padding-bottom:2px}
  .tab{padding:8px 10px;font-size:14px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-outline-light{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.3);color:#fff}
.btn-outline-light:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-outline-light:active{transform:translateY(0) scale(.98)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;background:#14161A;color:#fff;overflow:hidden;padding:44px 0 0}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(115deg,rgba(20,22,26,.94) 0%,rgba(20,22,26,.76) 58%,rgba(20,22,26,.92) 100%),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(184,255,60,.16) 1px,transparent 1px);background-size:22px 22px;opacity:.45}
.hero-inner{position:relative;display:grid;gap:32px;padding-bottom:36px}
@media(min-width:1024px){.hero-inner{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);align-items:center;gap:48px;padding-bottom:44px}}
.hero-copy{position:relative;display:grid;gap:16px;align-content:start}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.62)}
.crumb a{color:rgba(255,255,255,.76)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.45}
.crumb .cur{color:rgba(255,255,255,.58)}
.page-title{font-size:30px;line-height:1.33;font-weight:800;color:#fff;letter-spacing:-.01em}
@media(min-width:1024px){.page-title{font-size:34px;line-height:1.35}}
.hero-lead{font-size:15px;line-height:1.8;color:rgba(255,255,255,.78);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}
.hero-media{position:relative;border-radius:var(--r-video);overflow:hidden;border:1px solid rgba(255,255,255,.14);max-width:420px}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EDEAE3}
.hero-media-tag{position:absolute;left:12px;bottom:12px;padding:6px 12px;border-radius:var(--r-pill);background:rgba(20,22,26,.78);border:1px solid rgba(255,255,255,.18);color:#fff;font-size:12px;line-height:1.4}
.hero-stats{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.14)}
.hero-stat{display:flex;flex-direction:column;gap:2px;padding:16px 0}
.hero-stat + .hero-stat{border-left:1px solid rgba(255,255,255,.14);padding-left:16px}
.hero-stat .n{font-size:24px;line-height:1.2;font-weight:600;color:#fff}
.hero-stat .l{font-size:12px;color:rgba(255,255,255,.62)}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:80px 0}}
.section + .section{padding-top:0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 24px;margin-bottom:28px}
.section-title{position:relative;padding-left:14px;font-size:24px;line-height:1.33;font-weight:700;color:var(--ink)}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand)}
.section-sub{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink-3);max-width:52em}
.section-link{font-size:14px;color:var(--ink-2);border-bottom:1px solid var(--line);padding-bottom:2px}
.section-link:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;border-radius:2px;background:linear-gradient(180deg,rgba(184,255,60,.95),rgba(230,225,216,.95))}
.tl-item{position:relative;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-28px;top:4px;width:16px;height:16px;border-radius:50%;background:var(--accent);border:3px solid var(--paper);box-shadow:0 0 0 1px rgba(20,22,26,.08)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.tl-tag{display:inline-flex;align-items:center;padding:6px 12px;border-radius:var(--r-pill);background:rgba(184,255,60,.34);color:var(--ink);font-size:12px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.tl-title{font-size:18px;line-height:1.4;font-weight:600;color:var(--ink)}
.tl-grid{display:grid;gap:16px}
@media(min-width:768px){.tl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.topic-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.topic-card:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.3);box-shadow:var(--shadow-pop)}
.topic-cover{position:relative;aspect-ratio:16/9;background:#EDEAE3;overflow:hidden}
.topic-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.topic-card:hover .topic-cover img{transform:scale(1.03)}
.topic-badge{position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:var(--r-pill);background:rgba(255,75,33,.92);color:#fff;font-size:12px;line-height:1.4}
.topic-body{padding:18px 18px 16px;display:grid;gap:8px}
.topic-title{font-size:17px;line-height:1.42;font-weight:600}
.topic-title a{color:var(--ink)}
.topic-title a:hover{color:var(--brand)}
.topic-desc{font-size:14px;line-height:1.7;color:var(--ink-3)}
.topic-links{list-style:none;margin:auto 0 0;padding:0;border-top:1px dashed var(--line);margin-top:4px}
.topic-links li + li{border-top:1px dashed var(--line)}
.topic-links a{display:flex;align-items:center;gap:10px;padding:11px 18px;font-size:14px;line-height:1.55;color:var(--ink-2)}
.topic-links a::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.topic-links a:hover{background:rgba(184,255,60,.14);color:var(--brand)}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;gap:16px}
@media(min-width:640px){.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.metric-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.metric-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(255,75,33,.28);box-shadow:var(--shadow-pop)}
.metric-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.metric-name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.metric-value{font-size:26px;font-weight:600;line-height:1.2;color:var(--brand)}
.metric-bar{margin-top:14px;height:6px;border-radius:var(--r-pill);background:#EDEAE3;overflow:hidden}
.metric-bar span{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand),var(--accent))}
.metric-note{margin-top:12px;font-size:13px;line-height:1.7;color:var(--ink-3)}

/* ---------- 索引 + 阅读顺序 ---------- */
.index-layout{display:grid;gap:24px}
@media(min-width:1024px){.index-layout{grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:32px;align-items:start}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-card)}
.panel-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:16px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{
  padding:8px 16px;border-radius:var(--r-pill);background:var(--paper);border:1px solid var(--line);
  font-size:14px;line-height:1.5;color:var(--ink-2);
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.tag-cloud a:hover{background:rgba(184,255,60,.24);border-color:rgba(184,255,60,.7);color:var(--ink);transform:translateY(-1px)}
.tag-cloud a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.reading-steps{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.step-item{display:grid;grid-template-columns:40px 1fr;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.step-item:last-child{padding-bottom:0;border-bottom:0}
.step-num{font-size:22px;font-weight:600;line-height:1.2;color:var(--brand);font-variant-numeric:tabular-nums}
.step-title{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.step-text{margin-top:4px;font-size:13px;line-height:1.7;color:var(--ink-3)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  transition:background-color .18s ease,border-color .18s ease;
}
.faq-item.is-open{background:rgba(184,255,60,.1);border-color:rgba(184,255,60,.7)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;cursor:pointer;
  font-size:16px;line-height:1.5;font-weight:600;color:var(--ink);
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;border-radius:14px}
.faq-icon{position:relative;flex:none;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:0 20px 20px;font-size:15px;line-height:1.75;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;border-radius:20px;background:#14161A;color:#fff;
  display:grid;gap:24px;padding:32px 24px;
}
.cta-card::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px);pointer-events:none}
@media(min-width:768px){.cta-card{padding:40px}}
@media(min-width:1024px){.cta-card{grid-template-columns:minmax(0,1fr) 280px;align-items:center;gap:48px;padding:48px}}
.cta-copy{position:relative;display:grid;gap:14px;align-content:start}
.cta-tag{display:inline-flex;align-items:center;align-self:start;padding:6px 12px;border-radius:var(--r-pill);background:rgba(184,255,60,.16);border:1px solid rgba(184,255,60,.4);color:var(--accent);font-size:12px;line-height:1.4}
.cta-title{font-size:24px;line-height:1.35;font-weight:700;color:#fff}
.cta-text{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.cta-media{position:relative;border-radius:var(--r-video);overflow:hidden;border:1px solid rgba(255,255,255,.14);max-width:280px}
.cta-media img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EDEAE3}

/* ---------- 页脚 ---------- */
.site-footer{background:#14161A;color:#9AA0A6;padding:56px 0 28px;margin-top:24px}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff}
.footer-about{margin:0;max-width:360px;font-size:14px;line-height:1.75;color:#9AA0A6}
.footer-col h3{margin:0 0 14px;font-size:14px;font-weight:700;color:#fff}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#9AA0A6}
.footer-col a:hover{color:var(--accent)}
.footer-col a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  font-size:13px;color:#6B7280;
}
.footer-bottom a{color:#9AA0A6}
.footer-bottom a:hover{color:var(--accent)}