/* roulang page: index */
:root{
    --ink:#0E2B26;
    --lime:#C6F24E;
    --orange:#F0653A;
    --bg:#F7F5EF;
    --card:#FFFFFF;
    --text:#14201D;
    --muted:#5A6A66;
    --inverse:#F2F6F1;
    --line:#E3E1D8;
    --hover:#F0EEE5;
    --radius-card:14px;
    --radius-img:12px;
    --shadow-sm:0 1px 2px rgba(14,43,38,.06), 0 8px 24px -12px rgba(14,43,38,.18);
    --shadow-lg:0 2px 4px rgba(14,43,38,.08), 0 18px 40px -16px rgba(14,43,38,.28);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  ::selection{background:var(--lime);color:var(--ink)}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

  .num{font-variant-numeric:tabular-nums}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;line-height:1.6;font-weight:600;letter-spacing:.08em;
    text-transform:uppercase;color:var(--muted);
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);border-radius:2px}
  .eyebrow.on-dark{color:rgba(242,246,241,.72)}
  .eyebrow.on-dark::before{background:var(--lime)}

  h1,h2,h3,h4{letter-spacing:-.01em;margin:0}
  .h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800}
  .h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700}
  .h3{font-size:19px;line-height:1.45;font-weight:600}
  .lead{font-size:17px;line-height:1.85;color:var(--muted)}
  .small{font-size:13px;line-height:1.6;color:var(--muted)}

  .section{padding-top:56px;padding-bottom:56px}
  @media (min-width:1024px){.section{padding-top:88px;padding-bottom:88px}}
  .section-dark{background:var(--ink);color:var(--inverse)}
  .divide-1{border-top:1px solid var(--line)}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;padding:12px 22px;font-weight:600;font-size:15px;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
    white-space:nowrap;
  }
  .btn:hover{transform:translateY(-2px)}
  .btn:active{transform:translateY(0)}
  .btn-primary{background:var(--lime);color:var(--ink)}
  .btn-primary:hover{background:#d5f878}
  .btn-outline{border-color:rgba(242,246,241,.4);color:var(--inverse);background:transparent}
  .btn-outline:hover{border-color:var(--lime);color:var(--lime)}
  .btn-dark{background:var(--ink);color:var(--inverse)}
  .btn-dark:hover{background:#164039}
  .btn-ghost{border-color:var(--line);color:var(--text);background:#fff}
  .btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
  :focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

  /* 卡片 */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#d6d3c7}
  .card-media{overflow:hidden;border-radius:var(--radius-img);aspect-ratio:16/9;background:#E9E6DC}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
  .card:hover .card-media img{transform:scale(1.03)}

  .badge{
    display:inline-flex;align-items:center;gap:5px;border-radius:999px;
    padding:3px 10px;font-size:12px;line-height:1.6;font-weight:600;
    background:rgba(240,101,58,.1);color:#B8431F;border:1px solid rgba(240,101,58,.22);
  }
  .badge-lime{background:rgba(198,242,78,.18);color:#3F5A0E;border-color:rgba(198,242,78,.5)}
  .badge-dark{background:rgba(14,43,38,.06);color:var(--ink);border-color:var(--line)}

  .link-underline{
    text-decoration:none;transition:color .2s ease-out;
  }
  .link-underline:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);text-decoration-thickness:2px}

  /* 频道滚动条 */
  .channel-scroll{
    display:flex;gap:8px;align-items:center;
    overflow-x:auto;scroll-snap-type:x proximity;
    scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch;
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
    mask-image:linear-gradient(to right,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  }
  .channel-scroll::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;scroll-snap-align:start;
    display:inline-flex;align-items:center;gap:6px;
    height:34px;padding:0 15px;border-radius:999px;
    font-size:13.5px;font-weight:600;color:rgba(242,246,241,.78);
    border:1px solid rgba(242,246,241,.22);background:rgba(255,255,255,.04);
    transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
    white-space:nowrap;
  }
  .chip:hover{color:var(--lime);border-color:rgba(198,242,78,.6)}
  .chip.active{background:var(--lime);color:var(--ink);border-color:var(--lime)}

  .topic-pill{
    flex:0 0 auto;scroll-snap-align:start;
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border-radius:999px;font-size:14px;font-weight:600;
    background:#fff;border:1px solid var(--line);color:#3C4A46;
    transition:all .2s ease-out;white-space:nowrap;
  }
  .topic-pill:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
  .topic-pill.active{background:var(--lime);border-color:var(--lime);color:var(--ink)}

  /* 合集目录行 */
  .rowline{
    display:flex;align-items:center;gap:18px;
    padding:20px 16px;border-bottom:1px solid var(--line);
    transition:background-color .2s ease-out;
  }
  .rowline:hover{background:var(--hover)}
  .rowline .idx{
    font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.06em;
    font-variant-numeric:tabular-nums;min-width:38px;
  }

  /* FAQ */
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    display:flex;align-items:flex-start;gap:12px;width:100%;
    padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
    font-size:16.5px;font-weight:600;color:var(--text);
  }
  .faq-q::before{content:"";flex:0 0 auto;width:2px;height:20px;margin-top:5px;background:var(--lime);border-radius:2px}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;color:var(--muted);font-size:15px}
  .faq-a-inner{padding:0 0 20px 14px}
  .faq-icon{margin-left:auto;flex:0 0 auto;color:var(--muted);transition:transform .3s ease}
  .faq-item.open .faq-icon{transform:rotate(45deg);color:var(--ink)}

  /* 横向滚动推荐 */
  .rail{
    display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:8px;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .rail::-webkit-scrollbar{display:none}
  .rail > *{flex:0 0 260px;scroll-snap-align:start}

  /* 导航 */
  .site-header{position:sticky;top:0;z-index:50}
  .nav-top{background:var(--ink);border-bottom:1px solid rgba(198,242,78,.28)}
  .nav-link{
    font-size:14.5px;font-weight:600;color:rgba(242,246,241,.82);
    padding:8px 12px;border-radius:8px;transition:color .2s ease-out,background-color .2s ease-out;
  }
  .nav-link:hover{color:var(--lime);background:rgba(255,255,255,.06)}
  .nav-link.active{color:var(--lime)}
  .channel-bar{
    background:#0B231F;border-bottom:1px solid rgba(255,255,255,.07);
    transition:height .25s ease,padding .25s ease;
  }
  .brand-mark{
    width:34px;height:34px;border-radius:9px;background:var(--lime);
    display:grid;place-items:center;flex:0 0 auto;
  }
  .brand-mark span{
    display:block;width:16px;height:3px;border-radius:2px;background:var(--ink);
    box-shadow:0 6px 0 var(--ink);
  }
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);
    background:var(--ink);z-index:80;transform:translateX(100%);
    transition:transform .3s ease;overflow-y:auto;padding:24px 22px 40px;
  }
  .drawer.open{transform:translateX(0)}
  .drawer a{display:flex;align-items:center;min-height:48px;color:rgba(242,246,241,.86);font-weight:600;border-bottom:1px solid rgba(255,255,255,.08)}
  .drawer a:hover{color:var(--lime)}
  .backdrop{
    position:fixed;inset:0;background:rgba(14,43,38,.55);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .3s ease;
  }
  .backdrop.open{opacity:1;visibility:visible}

  .hero{
    position:relative;background:var(--ink);color:var(--inverse);overflow:hidden;
  }
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center right;
    opacity:.55;
  }
  .hero-mask{
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(14,43,38,.96) 0%,rgba(14,43,38,.86) 42%,rgba(14,43,38,.34) 100%);
  }
  .hero-arc{
    position:absolute;right:-60px;bottom:-90px;width:420px;height:420px;
    border:1.5px solid rgba(198,242,78,.35);border-radius:50%;
    pointer-events:none;
  }
  .hero-arc::after{
    content:"";position:absolute;inset:52px;border:1.5px solid rgba(198,242,78,.18);border-radius:50%;
  }

  .stat-block{border-left:2px solid rgba(198,242,78,.45);padding-left:14px}
  .stat-block .v{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--lime);line-height:1.2}
  .stat-block .k{font-size:13px;color:rgba(242,246,241,.7);line-height:1.6}

  .sub-input{
    width:100%;height:48px;border-radius:999px;padding:0 18px;
    background:rgba(255,255,255,.08);border:1px solid rgba(242,246,241,.3);
    color:var(--inverse);transition:border-color .2s ease,box-shadow .2s ease;
  }
  .sub-input::placeholder{color:rgba(242,246,241,.5)}
  .sub-input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.25)}

  .empty-box{
    border:1.5px dashed #CFCBBE;background:#FBF9F3;border-radius:14px;
    padding:38px 24px;text-align:center;color:var(--muted);
  }

  .footer{background:#0B231F;color:rgba(242,246,241,.72)}
  .footer a{color:rgba(242,246,241,.72);transition:color .2s ease}
  .footer a:hover{color:var(--lime)}

  .bento-lg{grid-column:span 2}
  @media (max-width:1023px){.bento-lg{grid-column:span 1}}

/* roulang page: category1 */
:root{
  --ink:#0E2B26;
  --ink-2:#0A211D;
  --ink-3:#123830;
  --lime:#C6F24E;
  --orange:#F0653A;
  --bg:#F7F5EF;
  --bg-soft:#F0EEE5;
  --card:#FFFFFF;
  --text:#14201D;
  --muted:#5A6A66;
  --invert:#F2F6F1;
  --line:#E3E1D8;
  --r-card:14px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(14,43,38,.06), 0 8px 24px -12px rgba(14,43,38,.18);
  --shadow-lg:0 2px 4px rgba(14,43,38,.08), 0 18px 40px -16px rgba(14,43,38,.26);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:-0.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
.tnum{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;}
}
.section{padding:56px 0;}
@media (min-width:1024px){
  .section{padding:88px 0;}
}
.section-head{max-width:760px;margin-bottom:32px;}
@media (min-width:1024px){
  .section-head{margin-bottom:44px;}
}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.section-desc{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--ink);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";display:block;width:22px;height:2px;background:var(--lime);border-radius:2px;
}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;}
.nav-top{
  background:var(--ink);
  border-bottom:1px solid rgba(242,246,241,.10);
}
.brand-mark{
  position:relative;display:inline-block;width:28px;height:28px;flex:none;
  border-radius:9px;
  background:linear-gradient(135deg,var(--lime) 0%,#9CD838 100%);
  overflow:hidden;
}
.brand-mark span{
  position:absolute;left:5px;top:5px;width:18px;height:18px;
  border:2px solid rgba(14,43,38,.75);
  border-right-color:transparent;border-bottom-color:transparent;
  border-radius:50%;
}
.brand-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;width:9px;height:9px;
  border-right:2.5px solid rgba(14,43,38,.85);
  border-bottom:2.5px solid rgba(14,43,38,.85);
  border-radius:0 0 4px 0;
}
.nav-link{
  display:inline-flex;align-items:center;height:36px;padding:0 13px;
  border-radius:9px;font-size:14px;font-weight:600;
  color:rgba(242,246,241,.82);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--lime);background:rgba(242,246,241,.07);}
.nav-link.active{color:var(--lime);background:rgba(198,242,78,.10);}

.channel-bar{
  background:var(--ink-2);
  border-bottom:1px solid rgba(242,246,241,.08);
  position:relative;
}
.channel-bar::before,
.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:26px;pointer-events:none;z-index:2;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,var(--ink-2),rgba(10,33,29,0));}
.channel-bar::after{right:0;background:linear-gradient(270deg,var(--ink-2),rgba(10,33,29,0));}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.chip{
  flex:none;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;font-size:14px;font-weight:600;
  color:rgba(242,246,241,.80);
  border:1px solid rgba(242,246,241,.20);
  transition:all .18s ease;
  white-space:nowrap;
}
.chip:hover{color:var(--lime);border-color:rgba(198,242,78,.55);}
.chip.active{
  background:var(--lime);color:var(--ink);border-color:var(--lime);font-weight:700;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:0;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-primary{
  background:var(--lime);color:var(--ink);
  box-shadow:0 1px 2px rgba(14,43,38,.06), 0 10px 24px -14px rgba(14,43,38,.5);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-outline-dark{
  border:1px solid rgba(242,246,241,.32);color:var(--invert);
}
.btn-outline-dark:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
.btn-outline{
  border:1px solid var(--line);color:var(--ink);background:var(--card);
}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-lime{background:rgba(198,242,78,.22);color:#3B5A12;}
.badge-orange{background:rgba(240,101,58,.14);color:#B33F1C;}
.badge-ink{background:var(--ink);color:var(--lime);}
.badge-ghost{border:1px solid var(--line);color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--bg-soft);color:var(--muted);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--muted);
  padding-top:20px;
}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);}
.breadcrumb .sep{opacity:.6;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  background:var(--ink);
  color:var(--invert);
  padding:40px 0 56px;
  overflow:hidden;
}
@media (min-width:1024px){
  .cat-hero{padding:56px 0 88px;}
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border:1px solid rgba(198,242,78,.18);border-radius:50%;pointer-events:none;
}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.25;font-weight:800;
  margin-top:18px;
  color:#fff;
}
.cat-hero .lede{
  margin-top:18px;font-size:16px;line-height:1.9;
  color:rgba(242,246,241,.78);
  max-width:560px;
}
.hero-media{
  position:relative;border-radius:16px;overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid rgba(242,246,241,.14);
  box-shadow:0 24px 60px -28px rgba(0,0,0,.7);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,43,38,.15) 0%,rgba(14,43,38,.72) 100%);
}
.hero-facts{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  margin-top:34px;padding-top:26px;
  border-top:1px solid rgba(242,246,241,.14);
}
.hero-facts .num{
  font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--lime);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-facts .txt{margin-top:4px;font-size:13px;color:rgba(242,246,241,.62);line-height:1.6;}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.thumb{
  border-radius:var(--r-img);overflow:hidden;background:#E8E5DB;aspect-ratio:16/9;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.card:hover .thumb img{transform:scale(1.03);}

/* ---------- 时间轴 ---------- */
.tl{position:relative;}
.tl::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--lime) 0%,rgba(198,242,78,.12) 100%);
  border-radius:2px;
}
.tl-group{padding-bottom:12px;}
.tl-group-head{
  position:relative;padding-left:40px;
  display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;
  margin-bottom:18px;
}
.tl-group-head::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:5px;
  background:var(--lime);border:3px solid var(--bg);box-shadow:0 0 0 1px rgba(14,43,38,.14);
}
.tl-group-time{font-size:17px;font-weight:800;color:var(--ink);}
.tl-group-note{font-size:13px;color:var(--muted);}
.tl-item{position:relative;padding-left:40px;padding-bottom:18px;}
.tl-dot{
  position:absolute;left:1px;top:22px;width:14px;height:14px;border-radius:50%;
  background:var(--lime);border:3px solid var(--bg);
  box-shadow:0 0 0 1px rgba(14,43,38,.16);
}
.tl-card{padding:20px 22px;}
.tl-card h3{font-size:17px;font-weight:700;margin-top:12px;line-height:1.5;}
.tl-card p{margin-top:8px;font-size:14.5px;line-height:1.85;color:var(--muted);}
.tl-meta{margin-top:12px;font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 术语解释 ---------- */
.glossary{
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 22px 20px;
  height:100%;
}
.glossary h3{font-size:16px;font-weight:700;}
.glossary p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted);}

/* ---------- 流程 ---------- */
.flow-step{
  position:relative;padding-top:26px;
  border-top:2px solid var(--line);
}
.flow-step::before{
  content:"";position:absolute;left:0;top:-2px;width:52px;height:2px;background:var(--lime);
}
.flow-step .idx{
  font-size:13px;font-weight:800;color:var(--orange);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.flow-step h3{margin-top:10px;font-size:17px;font-weight:700;}
.flow-step p{margin-top:8px;font-size:14.5px;line-height:1.85;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item + .faq-item{margin-top:12px;}
.faq-item.open{border-color:rgba(14,43,38,.35);box-shadow:var(--shadow);}
.faq-q{
  width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px 18px 22px;font-size:16px;font-weight:700;color:var(--ink);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:8px;top:50%;transform:translateY(-50%);
  width:2px;height:18px;background:var(--lime);border-radius:2px;
}
.faq-q .ico{
  flex:none;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  transition:transform .25s ease,background-color .25s ease,border-color .25s ease;
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--lime);border-color:var(--lime);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 22px 20px 22px;font-size:14.5px;line-height:1.85;color:var(--muted);
}

/* ---------- 横向滚动卡片 ---------- */
.scroll-x{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:8px;
  scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.scroll-x::-webkit-scrollbar{display:none;}
.scroll-x > *{flex:0 0 260px;scroll-snap-align:start;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:var(--invert);
  border-radius:20px;
  padding:36px 26px;
  position:relative;overflow:hidden;
}
@media (min-width:1024px){
  .cta-band{padding:52px 48px;}
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-140px;width:340px;height:340px;
  border:1px solid rgba(198,242,78,.18);border-radius:50%;
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);line-height:1.4;color:#fff;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(242,246,241,.75);max-width:520px;}
.subscribe{
  display:flex;gap:10px;flex-wrap:wrap;margin-top:22px;max-width:520px;
}
.subscribe input{
  flex:1 1 220px;height:46px;padding:0 18px;border-radius:999px;
  background:rgba(242,246,241,.08);
  border:1px solid rgba(242,246,241,.22);
  color:#fff;font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input::placeholder{color:rgba(242,246,241,.45);}
.subscribe input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.28);}

/* ---------- 页脚 ---------- */
.footer{
  background:var(--ink);
  color:rgba(242,246,241,.70);
  margin-top:0;
}
.footer h3{color:var(--invert);}
.footer a{transition:color .18s ease;}
.footer a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);}

/* ---------- 抽屉与搜索 ---------- */
.drawer{position:fixed;inset:0;z-index:80;pointer-events:none;}
.drawer-mask{
  position:absolute;inset:0;background:rgba(10,33,29,.55);
  opacity:0;transition:opacity .28s ease;
}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(88vw,360px);
  background:var(--ink);
  padding:22px 20px 32px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .3s ease-out;
  border-left:1px solid rgba(242,246,241,.12);
}
.drawer.open{pointer-events:auto;}
.drawer.open .drawer-mask{opacity:1;}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:rgba(242,246,241,.86);
  transition:background-color .18s ease,color .18s ease;
}
.drawer-link:hover,.drawer-link.active{background:rgba(198,242,78,.12);color:var(--lime);}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}

.search-layer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(10,33,29,.72);
  padding:90px 20px 20px;
  backdrop-filter:blur(3px);
}
.search-layer.open{display:block;}
.search-box{
  max-width:640px;margin:0 auto;background:var(--card);
  border-radius:16px;padding:18px;box-shadow:var(--shadow-lg);
}
.search-box input{
  width:100%;height:48px;border-radius:10px;border:1px solid var(--line);
  padding:0 16px;font-size:15px;background:var(--bg);
}
.search-box input:focus{outline:none;border-color:var(--ink);}

@media (max-width:639px){
  .hero-facts{grid-template-columns:1fr;gap:14px;}
  .btn{width:100%;}
  .subscribe .btn{width:100%;}
}

/* roulang page: article */
:root{
  --deep:#0E2B26;
  --deep-soft:#143830;
  --deep-line:rgba(242,246,241,.14);
  --lime:#C6F24E;
  --lime-soft:rgba(198,242,78,.14);
  --orange:#F0653A;
  --bg:#F7F5EF;
  --bg-soft:#F0EEE5;
  --card:#FFFFFF;
  --ink:#14201D;
  --ink-2:#5A6A66;
  --line:#E3E1D8;
  --r-card:14px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(14,43,38,.06), 0 8px 24px -12px rgba(14,43,38,.18);
  --shadow-hover:0 2px 4px rgba(14,43,38,.08), 0 16px 36px -14px rgba(14,43,38,.26);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

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

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;}
.nav-top{background:var(--deep);border-bottom:1px solid rgba(198,242,78,.16);}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--lime);
  display:grid;place-items:center;position:relative;flex:0 0 auto;
}
.brand-mark span{
  display:block;width:15px;height:15px;border-radius:50%;
  border:2.5px solid var(--deep);position:relative;
}
.brand-mark span::after{
  content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;
  transform:translate(-50%,-50%);border-radius:50%;background:var(--deep);
}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:rgba(242,246,241,.8);
  transition:color .18s ease-out, background-color .18s ease-out;
}
.nav-link:hover{color:var(--lime);background:rgba(198,242,78,.08);}
.nav-link.active{color:var(--lime);background:rgba(198,242,78,.13);font-weight:600;}
.channel-bar{
  background:rgba(14,43,38,.98);
  border-bottom:1px solid rgba(242,246,241,.09);
  transition:height .2s ease;
}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;scroll-snap-align:center;
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  font-size:14px;white-space:nowrap;
  color:rgba(242,246,241,.78);
  border:1px solid rgba(242,246,241,.2);
  transition:color .18s ease-out, border-color .18s ease-out, background-color .18s ease-out;
}
.chip:hover{color:var(--lime);border-color:rgba(198,242,78,.6);}
.chip.active{background:var(--lime);border-color:var(--lime);color:var(--deep);font-weight:700;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;padding:12px 24px;
  transition:transform .2s ease-out, filter .2s ease-out, background-color .2s ease-out, color .2s ease-out, border-color .2s ease-out;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.06);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--lime);color:var(--deep);}
.btn-dark{background:var(--deep);color:#F2F6F1;}
.btn-dark:hover{background:var(--deep-soft);}
.btn-outline{border-color:rgba(242,246,241,.32);color:#F2F6F1;}
.btn-outline:hover{border-color:var(--lime);color:var(--lime);}
.btn-outline-dark{border-color:var(--line);color:var(--ink);background:#fff;}
.btn-outline-dark:hover{border-color:var(--deep);color:var(--deep);}

/* ---------- 通用组件 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow);
  transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out;
}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6D3C6;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(240,101,58,.12);color:var(--orange);
  font-size:12.5px;font-weight:700;letter-spacing:.01em;
}
.badge-lime{background:var(--lime-soft);color:#3D5B12;}
.pill{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:13px;
  transition:color .18s, border-color .18s, background-color .18s;
}
.pill:hover{color:var(--deep);border-color:var(--lime);background:#FBFAF3;}
.dot-sep{width:4px;height:4px;border-radius:50%;background:#C6C3B7;display:inline-block;}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(9,26,23,.6);
  opacity:0;visibility:hidden;transition:opacity .28s ease, visibility .28s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;width:min(86vw,340px);
  background:var(--deep);color:#F2F6F1;padding:22px 20px 40px;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.22,.7,.3,1);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-item{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  color:rgba(242,246,241,.86);font-size:15px;
  transition:background-color .18s, color .18s;
}
.drawer-item:hover,.drawer-item.active{background:rgba(198,242,78,.14);color:var(--lime);}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--ink-2);}
.crumb a{transition:color .18s;}
.crumb a:hover{color:var(--deep);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);}
.crumb .sep{margin:0 8px;color:#B9B6AA;}

/* ---------- 文章排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--ink);}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.5vw,27px);font-weight:700;line-height:1.4;
  margin:40px 0 16px;padding-left:15px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  border-radius:3px;background:var(--lime);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body a{color:var(--deep);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;}
.article-body a:hover{color:var(--orange);}
.article-body ul{list-style:disc;padding-left:1.35em;margin:0 0 1.15em;}
.article-body ol{list-style:decimal;padding-left:1.45em;margin:0 0 1.15em;}
.article-body li{margin:.42em 0;}
.article-body img{border-radius:var(--r-img);margin:22px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-2);margin-top:10px;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--bg-soft);
  border-left:3px solid var(--deep);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left;}
.article-body thead th{background:var(--bg-soft);font-weight:700;}
.article-body tbody tr:nth-child(even) td{background:#FBFAF6;}
.article-body pre{
  background:var(--deep);color:#E8F2E4;border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:22px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.empty-box{
  border:1px dashed #CFCCBE;border-radius:var(--r-card);
  background:#FBFAF6;padding:34px 24px;text-align:center;
}
.empty-box strong{display:block;font-size:19px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.empty-box p{color:var(--ink-2);font-size:14.5px;margin:0;}

/* ---------- 侧栏 ---------- */
.sidebar-title{
  font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;
  padding-left:11px;position:relative;
}
.sidebar-title::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  border-radius:3px;background:var(--lime);
}
.sidebar-list li+li{margin-top:10px;}
.sidebar-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--ink-2);padding:6px 0;
  border-bottom:1px dashed #EAE7DC;transition:color .18s, padding-left .18s;
}
.sidebar-list a:hover{color:var(--deep);padding-left:5px;}
.sidebar-list li:last-child a{border-bottom:0;}

.field{
  width:100%;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:14px;color:var(--ink);
  transition:border-color .18s, box-shadow .18s;
}
.field::placeholder{color:#9C9A90;}
.field:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.35);}

/* ---------- 深色区块 ---------- */
.dark-panel{
  background:var(--deep);color:rgba(242,246,241,.82);
  border-radius:var(--r-card);
}
.dark-panel h2,.dark-panel h3{color:#F2F6F1;}

/* ---------- 阅读进度 & 图片 ---------- */
.progress-track{height:3px;background:rgba(242,246,241,.12);overflow:hidden;}
.progress-bar{height:100%;width:0;background:var(--lime);transition:width .12s linear;}
.ratio{position:relative;overflow:hidden;border-radius:var(--r-img);background:#EDEBE2;}
.ratio img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card-hover:hover .ratio img{transform:scale(1.03);}

/* ---------- 页脚 ---------- */
.footer{background:var(--deep);color:rgba(242,246,241,.76);}
.footer h3{color:#F2F6F1;}
.footer a{color:rgba(242,246,241,.76);transition:color .18s ease-out;}
.footer a:hover{color:var(--lime);}

@media (max-width:1023px){
  .article-body{font-size:16px;}
}
@media (max-width:639px){
  .article-body{font-size:15.5px;line-height:1.88;}
  .btn{padding:11px 20px;font-size:14.5px;}
}

/* roulang page: category2 */
:root{
    --ink:#0E2B26;
    --flash:#C6F24E;
    --clay:#F0653A;
    --cream:#F7F5EF;
    --card:#FFFFFF;
    --text:#14201D;
    --muted:#5A6A66;
    --line:#E3E1D8;
    --inverse:#F2F6F1;
    --radius:14px;
    --radius-sm:12px;
    --radius-pill:999px;
    --shadow:0 1px 2px rgba(14,43,38,.06), 0 8px 24px -12px rgba(14,43,38,.18);
    --shadow-hover:0 2px 6px rgba(14,43,38,.08), 0 20px 40px -16px rgba(14,43,38,.28);
    --section:56px;
  }
  @media (min-width:1024px){ :root{ --section:88px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
  body{
    margin:0;
    background:var(--cream);
    color:var(--text);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; transition:color .2s ease, border-color .2s ease, background-color .2s ease; }
  button,input{ font:inherit; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4,h5,p{ margin:0; }
  :focus-visible{ outline:2px solid var(--flash); outline-offset:2px; border-radius:4px; }

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

  .title-xl{ font-size:clamp(28px,4.2vw,44px); line-height:1.25; font-weight:800; letter-spacing:-.01em; }
  .title-lg{ font-size:clamp(22px,2.6vw,30px); line-height:1.35; font-weight:700; letter-spacing:-.01em; }
  .title-md{ font-size:19px; line-height:1.45; font-weight:600; }
  .title-sm{ font-size:16px; line-height:1.5; font-weight:600; }
  .lead{ font-size:16px; line-height:1.85; color:var(--muted); }
  .num{ font-variant-numeric:tabular-nums; }

  /* 品牌标记 */
  .brand-mark{
    position:relative; display:inline-block; width:28px; height:28px; flex:none;
    border-radius:9px; background:linear-gradient(135deg,#C6F24E 0%,#8FD21C 100%);
    box-shadow:0 4px 14px -6px rgba(198,242,78,.9);
  }
  .brand-mark::before,
  .brand-mark::after{
    content:""; position:absolute; top:6px; width:3px; height:16px; border-radius:2px;
    background:#0E2B26; transform:skewX(-12deg);
  }
  .brand-mark::before{ left:8px; }
  .brand-mark::after{ right:8px; }
  .brand-mark span{
    position:absolute; left:50%; top:50%; width:4px; height:4px; margin:-2px 0 0 -2px;
    border-radius:50%; background:#0E2B26; opacity:.55;
  }

  /* 顶部导航 */
  .site-header{ position:relative; z-index:50; }
  .nav-top{
    position:sticky; top:0; z-index:60;
    background:rgba(14,43,38,.98);
    border-bottom:1px solid rgba(242,246,241,.14);
    backdrop-filter:saturate(150%) blur(8px);
  }
  .nav-link{
    display:inline-flex; align-items:center; height:36px; padding:0 14px;
    border-radius:var(--radius-pill); color:rgba(242,246,241,.78);
    font-size:14px; font-weight:600; letter-spacing:.01em;
  }
  .nav-link:hover{ color:#F2F6F1; background:rgba(242,246,241,.09); }
  .nav-link.active{ color:var(--flash); background:rgba(198,242,78,.12); }

  .channel-bar{
    background:#0B221E;
    border-bottom:1px solid rgba(242,246,241,.1);
    position:relative;
  }
  .channel-bar::after{
    content:""; position:absolute; right:0; top:0; bottom:0; width:36px; pointer-events:none;
    background:linear-gradient(90deg, rgba(11,34,30,0), #0B221E);
  }
  @media (min-width:1024px){ .channel-bar::after{ display:none; } }
  .channel-scroll{
    display:flex; align-items:center; gap:8px;
    overflow-x:auto; -webkit-overflow-scrolling:touch;
    scroll-snap-type:x proximity;
    scrollbar-width:none; -ms-overflow-style:none;
  }
  .channel-scroll::-webkit-scrollbar{ display:none; }
  .channel-scroll > *{ flex:none; scroll-snap-align:start; }

  .chip{
    display:inline-flex; align-items:center; height:34px; padding:0 16px;
    border-radius:var(--radius-pill); border:1px solid rgba(242,246,241,.22);
    color:rgba(242,246,241,.82); font-size:13.5px; font-weight:600; white-space:nowrap;
  }
  .chip:hover{ border-color:var(--flash); color:var(--flash); }
  .chip.active{ background:var(--flash); border-color:var(--flash); color:var(--ink); }

  /* 按钮 */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:12px 22px; border-radius:var(--radius-pill); border:1px solid transparent;
    font-size:15px; font-weight:700; letter-spacing:.01em; cursor:pointer;
    transition:transform .2s ease-out, filter .2s ease-out, box-shadow .2s ease-out, background-color .2s ease, color .2s ease, border-color .2s ease;
  }
  .btn:active{ transform:translateY(0); }
  .btn-primary{ background:var(--flash); color:#0E2B26; box-shadow:0 10px 24px -12px rgba(198,242,78,.95); }
  .btn-primary:hover{ filter:brightness(1.06); transform:translateY(-2px); box-shadow:0 14px 28px -12px rgba(198,242,78,1); }
  .btn-ghost{ background:transparent; color:var(--inverse); border-color:rgba(242,246,241,.38); }
  .btn-ghost:hover{ background:rgba(242,246,241,.1); border-color:var(--flash); color:var(--flash); transform:translateY(-2px); }
  .btn-outline{ background:#fff; color:var(--text); border-color:var(--line); }
  .btn-outline:hover{ border-color:var(--ink); transform:translateY(-2px); box-shadow:var(--shadow); }

  /* 徽章与标签 */
  .badge{
    display:inline-flex; align-items:center; gap:6px; height:26px; padding:0 11px;
    border-radius:var(--radius-pill); font-size:12px; font-weight:700; letter-spacing:.02em;
  }
  .badge-flash{ background:rgba(198,242,78,.16); color:#7CB712; }
  .badge-clay{ background:rgba(240,101,58,.13); color:#C8481D; }
  .badge-dark{ background:rgba(14,43,38,.08); color:#2C4A43; }
  .badge-onDark{ background:rgba(198,242,78,.16); color:var(--flash); }

  /* 卡片 */
  .card{
    background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
    box-shadow:var(--shadow); overflow:hidden;
    transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease;
  }
  .card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:#D5D2C6; }
  .card-media{ overflow:hidden; border-radius:var(--radius-sm); background:#EDEBE2; }
  .card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .2s ease-out; }
  .card:hover .card-media img{ transform:scale(1.03); }

  .ratio-16-10{ aspect-ratio:16/10; }
  .ratio-16-9{ aspect-ratio:16/9; }
  .ratio-4-3{ aspect-ratio:4/3; }
  .ratio-1-1{ aspect-ratio:1/1; }

  /* 面包屑 */
  .crumb{ font-size:13px; color:var(--muted); display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
  .crumb a:hover{ color:var(--ink); text-decoration:underline; text-underline-offset:4px; }
  .crumb .sep{ color:#B6B3A6; }
  .crumb .now{ color:var(--ink); font-weight:600; }

  /* Hero */
  .cat-hero{
    position:relative; overflow:hidden; color:var(--inverse);
    background:#0E2B26 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  }
  .cat-hero::before{
    content:""; position:absolute; inset:0;
    background:linear-gradient(100deg, rgba(14,43,38,.97) 0%, rgba(14,43,38,.88) 46%, rgba(14,43,38,.66) 100%);
  }
  .cat-hero::after{
    content:""; position:absolute; right:-120px; bottom:-160px; width:420px; height:420px;
    border:1px solid rgba(198,242,78,.28); border-radius:50%; pointer-events:none;
  }
  .hero-media{
    border-radius:var(--radius-sm); overflow:hidden;
    border:1px solid rgba(242,246,241,.18);
    box-shadow:0 24px 60px -28px rgba(0,0,0,.75);
  }
  .hero-media img{ width:100%; height:100%; object-fit:cover; }
  .stat-num{ font-size:clamp(24px,3vw,32px); font-weight:800; line-height:1.1; color:var(--flash); font-variant-numeric:tabular-nums; }
  .stat-label{ font-size:13px; color:rgba(242,246,241,.72); margin-top:6px; }

  /* Bento */
  .bento-card{ display:flex; flex-direction:column; height:100%; }
  .bento-pad{ padding:20px; }
  @media (min-width:1024px){ .bento-pad{ padding:24px; } }
  .meta-line{ font-size:13px; color:var(--muted); display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
  .meta-dot{ width:4px; height:4px; border-radius:50%; background:#C6C3B6; display:inline-block; }

  .stripe{
    background:linear-gradient(90deg, rgba(198,242,78,.14) 0%, rgba(198,242,78,0) 62%);
  }

  /* 术语卡 */
  .term-card{
    background:#fff; border:1px solid var(--line); border-radius:var(--radius);
    padding:20px; box-shadow:var(--shadow); transition:transform .2s ease-out, box-shadow .2s ease-out;
  }
  .term-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); }
  .term-key{ display:flex; align-items:baseline; gap:8px; }
  .term-en{ font-size:12px; color:var(--clay); font-weight:700; letter-spacing:.02em; }

  /* 流程 */
  .step{
    position:relative; padding:22px 20px; border-radius:var(--radius);
    background:#fff; border:1px solid var(--line); box-shadow:var(--shadow); height:100%;
  }
  .step-num{
    display:inline-flex; align-items:center; justify-content:center;
    width:34px; height:34px; border-radius:10px; background:var(--ink); color:var(--flash);
    font-size:14px; font-weight:800; font-variant-numeric:tabular-nums;
  }

  /* FAQ */
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item:first-child{ border-top:1px solid var(--line); }
  .faq-q{
    width:100%; background:transparent; border:0; cursor:pointer; text-align:left;
    display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
    padding:20px 0 20px 16px; position:relative; color:var(--text);
    font-size:16px; font-weight:600; line-height:1.6;
  }
  .faq-q::before{
    content:""; position:absolute; left:0; top:22px; width:2px; height:20px;
    background:var(--flash); border-radius:2px; transition:height .2s ease-out, top .2s ease-out;
  }
  .faq-item.open .faq-q::before{ height:26px; top:19px; }
  .faq-q:hover{ color:#0B3B32; }
  .faq-icon{
    flex:none; width:22px; height:22px; border-radius:50%; border:1px solid var(--line);
    display:grid; place-items:center; color:var(--muted); margin-top:2px;
    transition:transform .25s ease-out, background-color .25s ease, color .25s ease, border-color .25s ease;
  }
  .faq-item.open .faq-icon{ transform:rotate(45deg); background:var(--flash); border-color:var(--flash); color:var(--ink); }
  .faq-a{ max-height:0; overflow:hidden; transition:max-height .32s ease; }
  .faq-a p{ padding:0 40px 22px 16px; font-size:15px; line-height:1.9; color:var(--muted); }

  /* 横滚推荐 */
  .rail{
    display:flex; gap:20px; overflow-x:auto; padding-bottom:8px;
    scroll-snap-type:x mandatory; scrollbar-width:none; -ms-overflow-style:none;
  }
  .rail::-webkit-scrollbar{ display:none; }
  .rail > *{ flex:0 0 260px; scroll-snap-align:start; }

  /* CTA */
  .cta-panel{
    position:relative; overflow:hidden; border-radius:18px; color:var(--inverse);
    background:#0E2B26 url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  }
  .cta-panel::before{
    content:""; position:absolute; inset:0;
    background:linear-gradient(110deg, rgba(14,43,38,.96), rgba(14,43,38,.78));
  }
  .field{
    width:100%; height:48px; padding:0 18px; border-radius:var(--radius-pill);
    background:rgba(255,255,255,.08); border:1px solid rgba(242,246,241,.28);
    color:var(--inverse); font-size:15px; transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  }
  .field::placeholder{ color:rgba(242,246,241,.55); }
  .field:focus{ outline:none; border-color:var(--flash); background:rgba(255,255,255,.12); box-shadow:0 0 0 4px rgba(198,242,78,.2); }

  /* 页脚 */
  .footer{ background:#0E2B26; color:rgba(242,246,241,.72); border-top:1px solid rgba(242,246,241,.12); }
  .footer a:hover{ color:var(--flash); text-decoration:underline; text-underline-offset:4px; }

  /* 抽屉与搜索 */
  .drawer{ position:fixed; inset:0; z-index:80; pointer-events:none; }
  .drawer .drawer-backdrop{
    position:absolute; inset:0; background:rgba(9,26,23,.62);
    opacity:0; transition:opacity .25s ease;
  }
  .drawer-panel{
    position:absolute; top:0; right:0; bottom:0; width:min(86vw,340px);
    background:#0B221E; padding:22px 20px; overflow-y:auto;
    transform:translateX(100%); transition:transform .28s ease-out;
    box-shadow:-24px 0 60px -30px rgba(0,0,0,.9);
  }
  .drawer.open{ pointer-events:auto; }
  .drawer.open .drawer-backdrop{ opacity:1; }
  .drawer.open .drawer-panel{ transform:translateX(0); }
  .drawer-link{
    display:flex; align-items:center; height:48px; padding:0 14px; border-radius:12px;
    color:rgba(242,246,241,.86); font-size:15px; font-weight:600;
  }
  .drawer-link:hover{ background:rgba(242,246,241,.08); color:var(--flash); }
  .drawer-link.active{ background:rgba(198,242,78,.14); color:var(--flash); }

  .search-panel{
    position:fixed; inset:0; z-index:70; display:none;
    background:rgba(9,26,23,.6); backdrop-filter:blur(4px);
  }
  .search-panel.open{ display:block; }
  .search-box{
    max-width:640px; margin:120px auto 0; background:#fff; border-radius:16px; padding:22px;
    box-shadow:0 30px 70px -30px rgba(0,0,0,.5);
  }

  @media (max-width:639px){
    body{ font-size:15px; }
    .faq-a p{ padding-right:20px; }
    .search-box{ margin:80px 16px 0; }
  }

/* roulang page: category3 */
:root{
  --ink:#0E2B26;
  --ink-2:#0B231F;
  --lime:#C6F24E;
  --orange:#F0653A;
  --bg:#F7F5EF;
  --card:#FFFFFF;
  --text:#14201D;
  --muted:#5A6A66;
  --line:#E3E1D8;
  --inv:#F2F6F1;
  --r-card:14px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(14,43,38,.06),0 8px 24px -12px rgba(14,43,38,.18);
  --sh-hover:0 2px 4px rgba(14,43,38,.08),0 18px 38px -16px rgba(14,43,38,.28);
  --sec:56px;
  --gap:20px;
}
@media (min-width:1024px){:root{--sec:88px;--gap:28px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
::selection{background:var(--lime);color:var(--ink)}

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

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50}
.nav-top{background:var(--ink);border-bottom:1px solid rgba(242,246,241,.10)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--lime),#93C41E);
  display:grid;place-items:center;position:relative;
  box-shadow:0 4px 14px -6px rgba(198,242,78,.7);
}
.brand-mark span{display:block;width:16px;height:3px;border-radius:2px;background:var(--ink);box-shadow:0 6px 0 var(--ink),0 -6px 0 var(--ink)}
.nav-link{
  padding:8px 14px;border-radius:10px;color:#CFDCD6;font-size:15px;font-weight:500;
  white-space:nowrap;transition:background .2s,color .2s;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);text-decoration:none}
.nav-link.active{color:var(--lime);font-weight:700;background:rgba(198,242,78,.12)}
.channel-bar{background:var(--ink-2);border-bottom:1px solid rgba(242,246,241,.12)}
.channel-scroll{
  display:flex;align-items:center;gap:8px;overflow-x:auto;white-space:nowrap;
  scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid rgba(242,246,241,.18);
  color:#C9D7D1;font-size:14px;scroll-snap-align:start;
  transition:color .2s,border-color .2s,background .2s;
}
.chip:hover{color:var(--lime);border-color:rgba(198,242,78,.55);text-decoration:none}
.chip.active{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700}
.search-panel{
  display:none;background:var(--ink-2);border-bottom:1px solid rgba(242,246,241,.12);
}
.search-panel.open{display:block}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:12px 24px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,filter .2s ease,box-shadow .2s ease,background .2s,color .2s;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.06);text-decoration:none}
.btn:active{transform:translateY(0);filter:brightness(.98)}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 10px 24px -14px rgba(198,242,78,.9)}
.btn-ghost{background:transparent;border-color:rgba(242,246,241,.34);color:var(--inv)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-dark{background:var(--ink);color:var(--inv)}
.btn-outline{background:var(--card);border-color:var(--line);color:var(--text)}
.btn-outline:hover{border-color:var(--ink)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- common type ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--orange);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--orange)}
.hero-title{
  margin:14px 0 0;font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800;
  letter-spacing:-.01em;
}
.sec-title{
  margin:8px 0 0;font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;
  letter-spacing:-.01em;color:var(--text);
}
.sec-sub{margin:12px 0 0;color:var(--muted);font-size:15px;max-width:660px}
.lead{font-size:17px;line-height:1.9;color:var(--muted)}
.section{padding-block:var(--sec)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb span.dot{color:#B9B6AA}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;background:var(--ink) center/cover no-repeat;
  background-image:linear-gradient(90deg,rgba(14,43,38,.94) 0%,rgba(14,43,38,.78) 45%,rgba(14,43,38,.42) 100%),url('/assets/images/backpic/back-1.webp');
  color:var(--inv);overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;left:-60px;bottom:-90px;width:320px;height:320px;
  border:1px solid rgba(198,242,78,.30);border-radius:50%;
}
.cat-hero-inner{padding-block:56px;position:relative;z-index:2}
@media (min-width:1024px){.cat-hero-inner{padding-block:80px}}
.hero-stat{
  border:1px solid rgba(242,246,241,.16);border-radius:12px;padding:14px 16px;
  background:rgba(242,246,241,.05);
}
.hero-stat b{display:block;font-size:22px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums}

/* ---------- cover card ---------- */
.cover-card{
  position:relative;border-radius:18px;overflow:hidden;min-height:320px;
  display:flex;align-items:flex-end;box-shadow:var(--sh);
}
.cover-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(14,43,38,.92) 6%,rgba(14,43,38,.42) 52%,rgba(14,43,38,.06) 100%);
}
.cover-body{position:relative;z-index:2;padding:26px;color:var(--inv)}
@media (min-width:768px){.cover-body{padding:36px}}
.cover-title{margin:12px 0 10px;font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:800;color:#fff}
.cover-text{margin:0;color:#D6E2DC;font-size:15px;max-width:640px}

/* ---------- badges & chips ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;background:rgba(240,101,58,.14);color:#C0431B;
}
.badge-lime{background:rgba(198,242,78,.30);color:#3E4C08}
.badge-dark{background:rgba(242,246,241,.16);color:#E9F1EC}
.badge-outline{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ---------- split rows ---------- */
.split-row{display:grid;grid-template-columns:1fr;gap:22px;align-items:center}
@media (min-width:768px){
  .split-row{grid-template-columns:1.05fr 1fr;gap:40px}
  .split-row.reverse .split-media{order:2}
}
.img-frame{
  aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-img);background:#E9E6DC;
}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.split-row:hover .img-frame img{transform:scale(1.03)}
.item-title{margin:12px 0 8px;font-size:20px;line-height:1.45;font-weight:600}
.item-text{margin:0;color:var(--muted);font-size:15px}
.dot-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.dot-list li{position:relative;padding-left:18px;font-size:14px;color:var(--muted)}
.dot-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--lime)}
.meta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:16px;font-size:13px;color:var(--muted)}
.meta-time{color:var(--orange);font-weight:700;font-variant-numeric:tabular-nums}
.link-more{font-weight:700;font-size:14px;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:2px}
.link-more:hover{text-decoration:none;color:var(--orange);border-color:var(--orange)}

/* ---------- terms ---------- */
.term-grid{display:grid;grid-template-columns:1fr;gap:var(--gap)}
@media (min-width:640px){.term-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.term-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease,border-color .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.term-card{padding:22px;border-left:3px solid rgba(198,242,78,.0)}
.term-card:hover{border-left-color:var(--lime)}
.term-card h3{margin:0 0 8px;font-size:17px;font-weight:700}
.term-card p{margin:0;color:var(--muted);font-size:14px}

/* ---------- faq ---------- */
.faq-wrap{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:20px 0;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.5;color:var(--text);
}
.faq-q::before{content:"";width:2px;height:18px;border-radius:2px;background:var(--lime);flex:0 0 auto}
.faq-q .faq-icon{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s ease;
}
.faq-q .faq-icon::before,
.faq-q .faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .faq-icon::before{width:12px;height:2px}
.faq-q .faq-icon::after{width:2px;height:12px;transition:opacity .25s ease}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-panel-inner{padding:0 34px 22px 16px;color:var(--muted);font-size:15px}
.faq-panel-inner p{margin:0 0 8px}

/* ---------- dark band ---------- */
.band{background:var(--ink);color:#D8E4DE}
.band .sec-title{color:var(--inv)}
.band .sec-sub{color:#B7C6BF}
.band .eyebrow{color:var(--lime)}
.band .eyebrow::before{background:var(--lime)}
.stat-cell{padding:22px 0}
.stat-cell b{
  display:block;font-size:clamp(26px,3.4vw,36px);font-weight:800;color:var(--lime);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-cell span{display:block;margin-top:6px;font-size:14px;color:#B7C6BF}

/* ---------- horizontal scroll ---------- */
.h-scroll{
  display:flex;gap:var(--gap);overflow-x:auto;padding:6px 4px 16px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.h-scroll::-webkit-scrollbar{display:none}
.h-card{
  flex:0 0 260px;scroll-snap-align:start;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);
  padding:18px;transition:transform .2s ease-out,box-shadow .2s ease;
}
.h-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);text-decoration:none}
.h-card h3{margin:10px 0 6px;font-size:16px;font-weight:700;line-height:1.5}
.h-card p{margin:0;font-size:13px;color:var(--muted)}

/* ---------- cta ---------- */
.cta-box{
  background:var(--ink);border-radius:20px;padding:36px 26px;color:var(--inv);
  position:relative;overflow:hidden;
}
@media (min-width:1024px){.cta-box{padding:52px 48px}}
.cta-box::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;
  border-radius:50%;border:1px solid rgba(198,242,78,.28);
}
.cta-title{margin:0;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;line-height:1.35}
.cta-text{margin:12px 0 0;color:#C3D2CB;font-size:15px;max-width:520px}
.subscribe-form{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.subscribe-form input{
  flex:1 1 220px;min-width:0;height:48px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(242,246,241,.24);background:rgba(242,246,241,.06);
  color:var(--inv);font-size:15px;
}
.subscribe-form input::placeholder{color:#9FB0A9}
.subscribe-form input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.28)}
.form-note{margin:10px 0 0;font-size:13px;color:#9FB0A9}

/* ---------- footer ---------- */
.footer{background:var(--ink-2);color:#B9C7C1;margin-top:var(--sec)}
.footer a{color:#B9C7C1}
.footer a:hover{color:var(--lime);text-decoration:none}
.footer h3{color:var(--inv)}

/* ---------- drawer & search ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(14,43,38,.58);
  backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer.open{opacity:1;pointer-events:auto}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(360px,86vw);
  background:var(--ink);padding:22px 20px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease-out;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:#DCE6E1;font-size:15px;border:1px solid transparent;
}
.drawer-link:hover{background:rgba(255,255,255,.06);text-decoration:none}
.drawer-link.active{background:rgba(198,242,78,.14);color:var(--lime);font-weight:700}
.icon-btn{
  display:grid;place-items:center;width:40px;height:40px;border-radius:50%;
  border:1px solid rgba(242,246,241,.22);color:var(--inv);background:transparent;cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{border-color:var(--lime);color:var(--lime)}

/* roulang page: category4 */
:root{
  --brand:#0E2B26;
  --brand-deep:#0A211D;
  --accent:#C6F24E;
  --orange:#F0653A;
  --bg:#F7F5EF;
  --card:#FFFFFF;
  --ink:#14201D;
  --muted:#5A6A66;
  --inv:#F2F6F1;
  --line:#E3E1D8;
  --radius:14px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(14,43,38,.06),0 8px 24px -12px rgba(14,43,38,.18);
  --shadow-hover:0 2px 6px rgba(14,43,38,.08),0 20px 42px -18px rgba(14,43,38,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.link-u{text-decoration:none;transition:color .2s}
.link-u:hover{text-decoration:underline;text-underline-offset:4px;color:var(--brand)}

/* ============ Header ============ */
.site-header{position:sticky;top:0;z-index:60}
.nav-top{background:var(--brand);border-bottom:1px solid rgba(242,246,241,.12)}
.site-header.is-scrolled .nav-top{box-shadow:0 12px 28px -20px rgba(10,33,29,.9)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,#D8FA75,#A9DE33);
  display:grid;place-items:center;
  box-shadow:0 6px 16px -8px rgba(198,242,78,.85);
}
.brand-mark span{
  display:block;width:15px;height:15px;border:2.5px solid #0E2B26;
  border-radius:50%;border-top-color:transparent;transform:rotate(35deg);
}
.nav-link{
  color:rgba(242,246,241,.78);font-size:14.5px;font-weight:500;
  padding:8px 14px;border-radius:999px;transition:color .2s,background-color .2s;
}
.nav-link:hover{color:var(--accent);background:rgba(242,246,241,.07)}
.nav-link.active{color:var(--accent);background:rgba(198,242,78,.14);font-weight:700}
.channel-bar{background:var(--brand-deep);border-bottom:1px solid rgba(242,246,241,.08);position:relative}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:26px;pointer-events:none;z-index:2;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,var(--brand-deep),rgba(10,33,29,0))}
.channel-bar::after{right:0;background:linear-gradient(270deg,var(--brand-deep),rgba(10,33,29,0))}
.channel-scroll{
  display:flex;align-items:center;gap:10px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;scroll-snap-align:start;
  height:34px;display:inline-flex;align-items:center;padding:0 15px;
  border-radius:999px;border:1px solid rgba(242,246,241,.2);
  color:rgba(242,246,241,.8);font-size:13.5px;white-space:nowrap;
  transition:color .2s,border-color .2s,background-color .2s;
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.active{background:var(--accent);border-color:var(--accent);color:#0E2B26;font-weight:700}
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--brand-deep);border-bottom:1px solid rgba(242,246,241,.12);
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.search-panel.open{max-height:120px}
.search-input{
  width:100%;height:44px;border-radius:999px;padding:0 20px;
  background:rgba(242,246,241,.08);border:1px solid rgba(242,246,241,.2);
  color:var(--inv);font-size:14px;transition:border-color .2s,box-shadow .2s;
}
.search-input::placeholder{color:rgba(242,246,241,.45)}
.search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.28)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;padding:12px 24px;font-size:15px;
  border:1px solid transparent;text-align:center;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s,box-shadow .2s,border-color .2s,color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--accent);color:#0E2B26;box-shadow:0 12px 26px -14px rgba(198,242,78,.95)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:transparent;border-color:rgba(242,246,241,.32);color:var(--inv)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);box-shadow:var(--shadow)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ Cards ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s;
}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CDD6C8}
.thumb{aspect-ratio:4/3;overflow:hidden;border-radius:var(--radius-img);background:#EAE8DF}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card-hover:hover .thumb img{transform:scale(1.03)}
.thumb-wide{aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-img);background:#EAE8DF}
.thumb-wide img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card-hover:hover .thumb-wide img{transform:scale(1.03)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(14,43,38,.07);color:var(--brand);white-space:nowrap;
}
.badge-lime{background:rgba(198,242,78,.4);color:#3E5A0F}
.badge-orange{background:rgba(240,101,58,.13);color:#C0401A}

/* ============ Breadcrumb & Hero ============ */
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.crumb .sep{color:#BCC3B7}
.cat-hero{position:relative;overflow:hidden;background:var(--brand)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,43,38,.96) 0%,rgba(14,43,38,.82) 46%,rgba(14,43,38,.4) 100%);
}
.hero-ring{
  position:absolute;right:-90px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  border:1px dashed rgba(198,242,78,.4);pointer-events:none;
}
.hero-ring::after{
  content:"";position:absolute;inset:44px;border-radius:50%;
  border:1px solid rgba(198,242,78,.22);
}

/* ============ Sidebar ============ */
.side-list li a{
  display:flex;align-items:center;gap:10px;padding:9px 0;
  font-size:14px;color:var(--muted);border-bottom:1px solid var(--line);
  transition:color .2s,padding-left .2s;
}
.side-list li:last-child a{border-bottom:0}
.side-list li a:hover{color:var(--brand);padding-left:5px}
.side-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.rank-list li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.rank-list li:last-child{border-bottom:0;padding-bottom:0}
.rank-num{
  font-size:13px;font-weight:800;color:var(--orange);font-variant-numeric:tabular-nums;
  flex:0 0 auto;width:22px;padding-top:2px;
}
.sub-input{
  width:100%;height:44px;border-radius:10px;padding:0 14px;
  background:rgba(242,246,241,.08);border:1px solid rgba(242,246,241,.22);
  color:var(--inv);font-size:14px;transition:border-color .2s,box-shadow .2s;
}
.sub-input::placeholder{color:rgba(242,246,241,.45)}
.sub-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.3)}

/* ============ Term / Step ============ */
.term-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:640px){.term-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.term-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.step-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:640px){.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.step-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step-num{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(198,242,78,.35);color:#37510B;font-weight:800;font-size:15px;
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item.open{border-color:#C9D2C3;box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 20px 18px 24px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:2px;background:var(--accent);
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--brand);font-weight:700;font-size:15px;line-height:1;
  transition:transform .25s ease,background-color .25s,border-color .25s;
}
.faq-item.open .faq-icon{background:var(--accent);border-color:var(--accent);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{padding:0 24px 20px;color:var(--muted);font-size:15px;line-height:1.8}

/* ============ Horizontal scroll ============ */
.hscroll{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 14px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.hscroll::-webkit-scrollbar{display:none}
.hscroll > *{flex:0 0 260px;scroll-snap-align:start}

/* ============ CTA ============ */
.cta-band{background:var(--brand);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-140px;width:360px;height:360px;
  border-radius:50%;border:1px dashed rgba(198,242,78,.28);pointer-events:none;
}

/* ============ Drawer ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,33,29,.58);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:90;
  background:var(--brand-deep);padding:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
}
.drawer.open{transform:translateX(0)}
.drawer a,.drawer button{min-height:48px}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:rgba(242,246,241,.82);font-size:15px;transition:background-color .2s,color .2s;
}
.drawer-link:hover,.drawer-link.active{background:rgba(198,242,78,.14);color:var(--accent)}

/* ============ Footer ============ */
.footer{background:var(--brand);color:rgba(242,246,241,.72)}
.footer a{color:rgba(242,246,241,.72);transition:color .2s}
.footer a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}

/* ============ Toast ============ */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,18px);
  background:var(--brand-deep);color:var(--inv);font-size:14px;
  padding:11px 20px;border-radius:999px;border:1px solid rgba(198,242,78,.4);
  opacity:0;visibility:hidden;transition:opacity .25s,transform .25s,visibility .25s;z-index:120;
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}