/* roulang page: index */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --lime:#BEF264;
  --lime-dark:#A3E635;
  --lime-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --txt-1:#17191C;
  --txt-2:#4B5057;
  --txt-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --r-card:16px;
  --r-img:14px;
  --r-band:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.04);
  --sh-2:0 12px 32px -12px rgba(16,18,20,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--txt-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,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:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,select{font:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 40px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
@media (max-width:767px){.nav-wrap{height:60px}}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:12px;font-weight:800;letter-spacing:.04em;flex:none;
}
.nav-links{display:none;align-items:center;gap:32px;margin-left:12px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;padding:4px 0;font-size:16px;font-weight:500;letter-spacing:.02em;color:var(--txt-2);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--lime);
  transition:width .18s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink)}
.nav-link:hover::after,.nav-link:focus-visible::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:none;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--r-pill);background:var(--paper);border:1px solid var(--line);
  transition:border-color .18s var(--ease);
}
@media (min-width:1024px){.search-box{display:flex}}
.search-box i{color:var(--txt-3);font-size:13px}
.search-box input{border:0;background:transparent;outline:none;width:130px;font-size:14px;color:var(--txt-1)}
.search-box input::placeholder{color:var(--txt-3)}
.search-box:focus-within{border-color:var(--lime)}
.nav-cta{display:none}
@media (min-width:768px){.nav-cta{display:inline-flex}}
.menu-btn{
  display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:var(--white);color:var(--ink);
  transition:background .18s var(--ease);
}
.menu-btn:hover{background:var(--paper)}
@media (min-width:1024px){.menu-btn{display:none}}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--white);display:none;flex-direction:column;
  padding:20px 20px 28px;
}
.mobile-drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-nav{margin-top:16px;flex:1;overflow-y:auto}
.drawer-nav a{
  display:block;font-size:22px;font-weight:600;padding:18px 0;border-bottom:1px solid var(--line);
  color:var(--ink);transition:color .18s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--ink)}
.drawer-nav a.active{padding-left:12px;box-shadow:inset 3px 0 0 var(--lime)}
.drawer-foot{margin-top:20px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-outline:hover{background:var(--paper)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.btn-outline-light:focus-visible{outline-color:var(--lime)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.ghost-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  transition:color .18s var(--ease);
}
.ghost-link span{transition:transform .18s var(--ease)}
.ghost-link:hover span{transform:translateX(3px)}
.ghost-link:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--graphite)}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.5;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,18,20,.72) 0%,rgba(16,18,20,.86) 58%,rgba(16,18,20,.96) 100%);
}
.hero-inner{
  position:relative;z-index:2;display:grid;gap:40px;padding-top:56px;padding-bottom:64px;
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:640px;padding-top:72px;padding-bottom:80px}
}
.badge-live{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,74,28,.14);border:1px solid rgba(255,74,28,.4);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.pulse{position:relative;width:8px;height:8px;border-radius:50%;background:var(--live);flex:none}
.pulse::after{
  content:"";position:absolute;inset:0;border-radius:50%;background:var(--live);
  animation:pulseRing 1.6s var(--ease) infinite;
}
@keyframes pulseRing{0%{transform:scale(1);opacity:.65}100%{transform:scale(2.4);opacity:0}}
.hero h1{
  margin-top:24px;color:#fff;font-size:clamp(40px,7vw,84px);line-height:1.04;
  font-weight:800;letter-spacing:-.03em;max-width:14ch;
}
.hero-sub{margin-top:20px;color:rgba(255,255,255,.72);font-size:17px;line-height:1.85;max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16)}
.hero-meta div{
  padding:0 18px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:13px;color:rgba(255,255,255,.62);line-height:1.7;
}
.hero-meta div:first-child{padding-left:0}
.hero-meta div + div{border-left:1px solid rgba(255,255,255,.16)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid rgba(255,255,255,.14);
}
@media (min-width:1024px){.hero-media img{aspect-ratio:16/11}}
.hero-tagline{
  position:absolute;left:16px;bottom:16px;right:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:12px 16px;border-radius:var(--r-img);
  background:rgba(16,18,20,.68);backdrop-filter:blur(6px);color:#fff;font-size:13px;
}
.hero-float{
  position:absolute;right:16px;top:-16px;background:var(--white);border-radius:var(--r-img);
  padding:14px 18px;box-shadow:var(--sh-2);border:1px solid var(--line);
}
.hero-float strong{display:block;font-size:20px;font-weight:700;font-family:ui-monospace,Menlo,monospace;line-height:1.4}
.hero-float span{font-size:12px;color:var(--txt-3);letter-spacing:.06em}

/* ============ 倒计时带 ============ */
.countdown-band{background:var(--graphite);padding:48px 0}
.countdown-inner{display:grid;gap:32px}
@media (min-width:1024px){.countdown-inner{grid-template-columns:1fr auto;align-items:center;gap:48px}}
.eyebrow-light{
  display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:rgba(255,255,255,.6);text-transform:uppercase;
}
.countdown-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:20px}
@media (min-width:768px){.countdown-grid{gap:24px;max-width:620px}}
.cd-cell{min-width:0}
.cd-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:28px;font-weight:700;line-height:1.1;color:var(--lime);letter-spacing:-.02em;
}
@media (min-width:768px){.cd-num{font-size:clamp(40px,6vw,72px)}}
.cd-num.tick{animation:tickUp .12s var(--ease)}
@keyframes tickUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.cd-label{margin-top:8px;font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.5)}
.countdown-note{margin-top:20px;font-size:14px;color:rgba(255,255,255,.6)}
.countdown-cta p{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5)}

/* ============ 区块通用 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
@media (min-width:1024px){.section-head{margin-bottom:56px}}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--txt-3);text-transform:uppercase}
.section-head h2{
  margin-top:12px;font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.01em;max-width:22ch;
}
.section-lead{margin-top:16px;color:var(--txt-2);font-size:16px;max-width:60ch}
.band-dark{background:var(--graphite);color:#fff}
.band-dark .eyebrow,.band-dark .section-lead{color:rgba(255,255,255,.6)}
.band-dark .section-head h2{color:#fff}

/* ============ 编号看点列表 ============ */
.point-list{border-bottom:1px solid var(--line)}
.point-row{
  display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start;
  padding:24px 0;border-top:1px solid var(--line);min-height:88px;
  transition:background .18s var(--ease);
}
@media (min-width:768px){
  .point-row{grid-template-columns:72px 1fr auto;gap:24px;align-items:center;padding:28px 0}
}
.point-row:hover{background:rgba(255,255,255,.6)}
.point-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:28px;font-weight:700;line-height:1.2;
  color:rgba(16,18,20,.2);transition:color .18s var(--ease);
}
@media (min-width:768px){.point-num{font-size:32px}}
.point-row:hover .point-num{color:var(--ink)}
.point-title{font-size:20px;font-weight:600;line-height:1.4}
@media (min-width:768px){.point-title{font-size:22px}}
.point-desc{margin-top:6px;font-size:15px;color:var(--txt-2);line-height:1.8}
.point-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
@media (min-width:768px){.point-tags{margin-top:0;justify-content:flex-end}}

/* 标签 / 徽章 */
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--lime-soft);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.chip-muted{background:var(--paper);color:var(--txt-2);border:1px solid var(--line)}
.chip-live{background:rgba(255,74,28,.12);color:#C4290A}

/* ============ 数据条 ============ */
.stats{
  display:grid;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
@media (min-width:640px){.stats{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--white);padding:28px 24px}
.stat strong{
  display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:700;line-height:1.2;letter-spacing:-.02em;
}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--txt-2)}

/* ============ 订阅板块 ============ */
.subscribe-band{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-band);
  padding:32px 24px;display:grid;gap:32px;
}
@media (min-width:1024px){.subscribe-band{grid-template-columns:5fr 6fr;gap:48px;padding:56px 48px}}
.subscribe-band h2{font-size:clamp(24px,3vw,32px);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.bullet-list{margin-top:28px;display:grid;gap:16px}
.bullet-list li{display:flex;gap:12px;font-size:15px;color:var(--txt-2);line-height:1.8}
.bullet-list li::before{
  content:"";flex:none;width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--lime);
}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
@media (min-width:768px){.form-card{padding:32px}}
.field{display:grid;gap:8px;margin-bottom:20px}
.field label{font-size:14px;font-weight:600}
.field input,.field select{
  height:48px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--paper);
  color:var(--txt-1);font-size:15px;outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input::placeholder{color:var(--txt-3)}
.field input:focus,.field select:focus{border-color:var(--ink);box-shadow:0 0 0 2px rgba(190,242,100,.75)}
.field .hint{font-size:12px;color:var(--txt-3)}
.form-note{margin-top:16px;font-size:13px;color:var(--txt-3)}
.form-success{
  display:none;background:var(--lime-soft);border:1px solid var(--lime);border-radius:var(--r-card);
  padding:20px 22px;font-size:15px;color:var(--ink);
}
.form-success.show{display:block}

/* ============ 回放非对称网格 ============ */
.replay-main{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.replay-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,18,20,.2)}
.replay-cover{position:relative;overflow:hidden}
.replay-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .18s var(--ease)}
.replay-main:hover .replay-cover img{transform:scale(1.03)}
.play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:20px;box-shadow:var(--sh-2);
  transition:transform .18s var(--ease);
}
.replay-main:hover .play-btn{transform:translate(-50%,-50%) scale(1.08)}
.duration{
  position:absolute;right:14px;bottom:14px;padding:4px 10px;border-radius:8px;
  background:rgba(16,18,20,.75);color:#fff;font-size:12px;
  font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
}
.replay-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.replay-body h3{font-size:22px;font-weight:600;line-height:1.4}
.replay-body p{font-size:15px;color:var(--txt-2)}
.small-card{
  display:flex;gap:16px;align-items:center;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.small-card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.small-card img{width:96px;height:64px;object-fit:cover;border-radius:10px;flex:none}
.small-card h3{font-size:16px;font-weight:600;line-height:1.45}
.small-card span{
  display:block;margin-top:6px;font-size:12px;color:var(--txt-3);
  font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
}

/* ============ 卡片网格（CMS） ============ */
.card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.card-cover{display:block;overflow:hidden}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .18s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a:hover{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:3px;text-underline-offset:4px}
.card-desc{
  font-size:15px;color:var(--txt-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-time{
  margin-top:auto;font-size:13px;color:var(--txt-3);
  font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-band);padding:56px 24px;text-align:center;background:var(--white);
}
.empty-state i{font-size:28px;color:var(--txt-3)}
.empty-state p{margin:14px 0 20px;color:var(--txt-2);font-size:15px}

/* ============ 分类入口错落贴片 ============ */
.cat-tile{
  display:flex;flex-direction:column;gap:14px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;height:100%;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cat-tile:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.cat-tile .cat-index{
  font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--txt-3);letter-spacing:.08em;
}
.cat-tile h3{font-size:22px;font-weight:700;line-height:1.35}
.cat-tile p{font-size:15px;color:var(--txt-2);line-height:1.8}
.cat-tile .cat-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px;
}
.cat-count{font-size:13px;color:var(--txt-3);font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums}
.cat-arrow{font-size:16px;transition:transform .18s var(--ease)}
.cat-tile:hover .cat-arrow{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:box-shadow .18s var(--ease)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:19px;font-weight:600;line-height:1.5;color:var(--ink);
  transition:color .18s var(--ease);
}
@media (min-width:768px){.faq-q{font-size:20px;padding:24px 0}}
.faq-q:hover{color:var(--ink)}
.faq-q:focus-visible{outline:2px solid var(--ink);outline-offset:4px;border-radius:6px}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:14px;color:var(--txt-2);
  transition:transform .24s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--lime);color:var(--ink);border-color:var(--lime)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--txt-2);max-width:76ch}
.faq-item.open{box-shadow:inset 3px 0 0 var(--lime)}
.faq-item.open .faq-q{padding-left:16px}
.faq-item.open .faq-a p{padding-left:16px}

/* ============ 底部 CTA ============ */
.cta-band{
  background:var(--graphite);border-radius:var(--r-band);padding:36px 28px;
  display:grid;gap:24px;
}
@media (min-width:1024px){.cta-band{grid-template-columns:1fr auto;align-items:center;gap:48px;padding:56px 48px}}
.cta-band h2{color:#fff;font-size:clamp(24px,3.4vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em;max-width:24ch}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.62);font-size:15px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--graphite);color:rgba(255,255,255,.7);margin-top:56px;padding-top:72px}
@media (min-width:1024px){.site-footer{margin-top:104px;padding-top:88px}}
.footer-grid{display:grid;gap:40px;padding-bottom:56px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px}}
.footer-brand .brand{color:#fff}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:34ch}
.social-row{display:flex;gap:12px;margin-top:22px}
.social-row a{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  display:grid;place-items:center;color:#fff;font-size:14px;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.social-row a:hover{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-sub{display:flex;gap:8px;margin-top:16px}
.footer-sub input{
  flex:1;height:44px;padding:0 14px;border-radius:10px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);color:#fff;font-size:14px;outline:none;
  transition:border-color .18s var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4)}
.footer-sub input:focus{border-color:var(--lime)}
.footer-sub button{
  height:44px;padding:0 18px;border-radius:10px;background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:600;transition:background .18s var(--ease);
}
.footer-sub button:hover{background:var(--lime-dark)}
.footer-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--lime)}

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

/* roulang page: article */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --lime:#BEF264;
  --lime-dark:#A3E635;
  --lime-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --text:#17191C;
  --text-2:#4B5057;
  --text-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --radius-card:16px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(16,18,20,.04);
  --shadow-2:0 12px 32px -12px rgba(16,18,20,.10);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime-dark);outline-offset:3px;}
body.no-scroll{overflow:hidden;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 40px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s cubic-bezier(.2,.7,.3,1);
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(16,18,20,.06);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;flex:none;
}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:16px;}
.nav-link{position:relative;padding:6px 0;font-size:16px;font-weight:500;letter-spacing:.02em;color:var(--text-2);transition:color .18s cubic-bezier(.2,.7,.3,1);}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--lime);transition:width .18s cubic-bezier(.2,.7,.3,1);}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{width:100%;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:var(--paper);border:1px solid var(--line);border-radius:999px;
  transition:border-color .18s,box-shadow .18s;
}
.search-box i{font-size:14px;color:var(--text-3);}
.search-box input{border:0;background:transparent;outline:0;width:150px;font-size:14px;}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(190,242,100,.35);}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--white);color:var(--ink);font-size:18px;
}
.menu-btn:hover{background:var(--paper);}

.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:68px;bottom:0;z-index:55;
  background:var(--white);padding:20px 20px 32px;overflow-y:auto;
  flex-direction:column;
}
.mobile-drawer.open{display:flex;}
.drawer-link{
  font-size:22px;font-weight:600;color:var(--ink);
  padding:16px 0;border-bottom:1px solid var(--line);min-height:44px;display:flex;align-items:center;
}
.drawer-link:hover{color:var(--lime-dark);}
.drawer-cta{margin-top:24px;justify-content:center;}

@media (max-width:1023px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-cta{display:none;}
  .menu-btn{display:inline-flex;}
  .nav-wrap{height:60px;}
  .mobile-drawer{top:60px;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),background-color .18s,border-color .18s,color .18s;
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--white);border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--paper);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);}
.link-arrow i{transition:transform .18s cubic-bezier(.2,.7,.3,1);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- Badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em;
}
.badge-lime{background:var(--lime-soft);color:#3F6212;}
.badge-muted{background:var(--paper);color:var(--text-2);}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);padding:20px 0 0;
}
.breadcrumb a{color:var(--text-3);transition:color .18s;}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .crumb-current{color:var(--ink);font-weight:500;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article head ---------- */
.article-head{background:var(--white);border-bottom:1px solid var(--line);padding-bottom:40px;}
.head-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:start;margin-top:20px;}
.article-title{
  font-size:clamp(28px,4.2vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);margin:16px 0 18px;
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.share-col{display:flex;flex-direction:column;align-items:flex-end;gap:10px;padding-top:6px;}
.share-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);}
.share-row{display:flex;gap:10px;}
.share-row button{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--white);
  color:var(--text-2);display:grid;place-items:center;transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.share-row button:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px);}
.share-row button.copied{background:var(--lime-soft);border-color:var(--lime-dark);color:#3F6212;}

/* ---------- Feature image ---------- */
.feature-figure{margin-top:32px;}
.feature-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);
}
.feature-figure figcaption{margin-top:12px;font-size:13px;color:var(--text-3);text-align:center;}

/* ---------- Layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:56px;padding-top:56px;padding-bottom:88px;align-items:start;
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:40px;padding-top:40px;padding-bottom:64px;}
}

/* ---------- Prose ---------- */
.prose{max-width:760px;font-size:17px;line-height:1.9;color:var(--text-2);}
.prose>*:first-child{margin-top:0;}
.prose p{margin:0 0 20px;}
.prose h2{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);
  margin:48px 0 16px;padding-left:14px;border-left:4px solid var(--lime);
}
.prose h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);margin:32px 0 12px;}
.prose h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px;}
.prose ul{margin:0 0 20px;}
.prose ul>li{position:relative;padding-left:20px;margin-bottom:10px;}
.prose ul>li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;
  background:var(--lime);border-radius:2px;
}
.prose ol{counter-reset:proseol;margin:0 0 20px;}
.prose ol>li{position:relative;padding-left:36px;margin-bottom:12px;counter-increment:proseol;}
.prose ol>li::before{
  content:counter(proseol,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--font-mono);font-size:15px;
  font-weight:700;color:var(--lime-dark);
}
.prose blockquote{
  margin:28px 0;padding:20px 24px;background:var(--paper);
  border-left:3px solid var(--lime);border-radius:0 12px 12px 0;
  font-size:18px;line-height:1.8;color:var(--ink);
}
.prose img{border-radius:12px;margin:26px 0 10px;width:100%;height:auto;}
.prose figure{margin:26px 0;}
.prose figcaption{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center;}
.prose a{color:var(--ink);border-bottom:2px solid var(--lime);transition:background-color .18s;}
.prose a:hover{background:var(--lime-soft);}
.prose strong{background:var(--lime-soft);color:var(--ink);font-weight:600;padding:1px 4px;border-radius:4px;}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.prose code{
  font-family:var(--font-mono);font-size:15px;background:var(--paper);
  padding:2px 6px;border-radius:6px;color:var(--ink);
}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;display:block;overflow-x:auto;}
.prose th{background:var(--paper);text-align:left;font-weight:600;color:var(--ink);}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:24px;background:var(--white);
  padding:56px 32px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
  max-width:760px;
}
.empty-state i{font-size:28px;color:var(--text-3);}
.empty-state h2{font-size:22px;font-weight:700;color:var(--ink);}
.empty-state p{font-size:15px;color:var(--text-2);max-width:460px;line-height:1.8;}

/* ---------- Article footer bits ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);font-size:13px;color:var(--text-2);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.tag:hover{border-color:var(--ink);color:var(--ink);}
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px;
}
.pn-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .18s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;gap:6px;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--shadow-2);}
.pn-card span{font-size:12px;letter-spacing:.08em;color:var(--text-3);}
.pn-card strong{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.pn-card.next{align-items:flex-end;text-align:right;}
.back-link{margin-top:24px;}

/* ---------- Sidebar ---------- */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:24px;}
@media (max-width:1023px){.article-side{position:static;}}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.side-card h2{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.toc-item{
  display:block;width:100%;text-align:left;padding:9px 0 9px 14px;position:relative;
  font-size:15px;color:var(--text-2);transition:color .18s;
}
.toc-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:transparent;border-radius:2px;transition:background-color .18s;
}
.toc-item:hover{color:var(--ink);}
.toc-item.is-active{color:var(--ink);font-weight:600;}
.toc-item.is-active::before{background:var(--lime);}
.side-sub{background:var(--lime-soft);border-color:var(--lime-soft);}
.side-sub h2{color:#3F6212;}
.side-sub p{font-size:14px;color:#4D6B18;line-height:1.75;margin-bottom:16px;}
.sub-form{display:flex;flex-direction:column;gap:10px;}
.sub-form input{
  height:48px;padding:0 16px;border:1px solid var(--line);border-radius:10px;
  background:var(--white);font-size:15px;outline:0;transition:border-color .18s,box-shadow .18s;
}
.sub-form input:focus{border-color:var(--ink);box-shadow:0 0 0 2px rgba(190,242,100,.8);}
.sub-form button{
  height:48px;border-radius:10px;background:var(--ink);color:var(--white);
  font-size:15px;font-weight:600;transition:background-color .18s,transform .18s;
}
.sub-form button:hover{background:#000;transform:translateY(-1px);}
.sub-success{
  background:var(--white);border:1px solid var(--lime-dark);border-radius:10px;
  padding:14px 16px;font-size:14px;color:#3F6212;line-height:1.7;
}
.recent-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);}
.recent-item:last-child{border-bottom:0;padding-bottom:0;}
.recent-item img{width:88px;height:60px;object-fit:cover;border-radius:10px;flex:none;}
.recent-item h3{font-size:15px;font-weight:600;line-height:1.55;color:var(--ink);transition:color .18s;}
.recent-item:hover h3{color:var(--lime-dark);}
.recent-item span{display:block;margin-top:6px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}

/* ---------- Related ---------- */
.related{padding-bottom:88px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;color:var(--ink);}
.section-head p{font-size:15px;color:var(--text-2);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.card-grid{grid-template-columns:1fr;}}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s,box-shadow .18s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--shadow-2);}
.card-media{overflow:hidden;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .18s cubic-bezier(.2,.7,.3,1);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);}
.card-desc{
  font-size:15px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;padding-top:8px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}

/* ---------- CTA band ---------- */
.cta-band{padding-bottom:96px;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:24px;background:var(--graphite);
  padding:56px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:32px;align-items:center;border:1px solid rgba(255,255,255,.08);
}
.cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22;}
.cta-content{position:relative;z-index:2;}
.cta-content h2{
  font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:700;
  color:var(--white);margin-bottom:12px;
}
.cta-content p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.72);max-width:620px;}
.cta-inner .btn{position:relative;z-index:2;}
@media (max-width:767px){
  .cta-inner{grid-template-columns:1fr;padding:36px 24px;gap:24px;}
}

/* ---------- Footer ---------- */
.site-footer{background:var(--graphite);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand .brand{color:var(--white);margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;}
.social-row{display:flex;gap:12px;margin-top:20px;}
.social-row a{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  display:grid;place-items:center;color:rgba(255,255,255,.74);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.social-row a:hover{background:var(--lime);border-color:var(--lime);color:var(--ink);transform:translateY(-2px);}
.footer-col h3{font-size:15px;font-weight:600;color:var(--white);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.62);transition:color .18s;}
.footer-col ul li a:hover{color:var(--lime);}
.footer-sub{display:flex;gap:8px;margin-top:14px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:var(--white);font-size:14px;outline:0;transition:border-color .18s;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4);}
.footer-sub input:focus{border-color:var(--lime);}
.footer-sub button{
  height:44px;padding:0 20px;border-radius:10px;background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:600;transition:background-color .18s,transform .18s;
}
.footer-sub button:hover{background:var(--lime-dark);transform:translateY(-1px);}
.footer-note{font-size:13px;color:rgba(255,255,255,.42);margin-top:12px;line-height:1.7;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
}

/* roulang page: category1 */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --lime:#BEF264;
  --lime-dark:#A3E635;
  --lime-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --text:#17191C;
  --text-2:#4B5057;
  --text-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --r-card:16px;
  --r-img:14px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(16,18,20,.04);
  --sh-2:0 12px 32px -12px rgba(16,18,20,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime-dark);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 40px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .18s var(--ease)}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);flex-shrink:0}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--lime);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{position:relative;padding:6px 0;font-size:16px;font-weight:500;letter-spacing:.02em;color:var(--text-2);transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--lime);transition:width .18s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;background:var(--paper);border:1px solid var(--line);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.search-box i{font-size:13px;color:var(--text-3)}
.search-box input{width:170px;border:0;background:transparent;font-size:14px;outline:none}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(190,242,100,.35)}
.menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;font-size:18px;color:var(--ink);transition:background-color .18s var(--ease)}
.menu-btn:hover{background:var(--paper)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:14px 28px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease)}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(16,18,20,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-dark-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-dark-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink)}
.link-arrow i{transition:transform .18s var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- badges / chips ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;background:var(--lime-soft);color:#3F6212}
.badge-live{background:rgba(255,74,28,.12);color:var(--live)}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--live);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,74,28,.5)}70%{box-shadow:0 0 0 6px rgba(255,74,28,0)}100%{box-shadow:0 0 0 0 rgba(255,74,28,0)}}
.chip{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;font-size:13px;color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.05)}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 16px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-3);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{margin:0 8px;color:var(--line)}
.crumb .now{color:var(--ink);font-weight:500}

/* ---------- hero ---------- */
.cat-hero{position:relative;border-radius:var(--r-block);overflow:hidden;background:var(--ink) url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.cat-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(16,18,20,.94) 0%,rgba(16,18,20,.76) 52%,rgba(16,18,20,.48) 100%)}
.cat-hero-inner{position:relative;padding:36px 32px}
.cat-hero h1{color:#fff;font-size:clamp(30px,4.6vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.1;max-width:760px}
.cat-hero .lead{margin-top:14px;font-size:15px;color:rgba(255,255,255,.72);max-width:660px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:24px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16)}
.hero-stat{padding-right:28px;margin-right:28px;border-right:1px solid rgba(255,255,255,.16)}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stat .v{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums}
.hero-stat .k{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.55)}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em}
.section-head .sub{margin-top:12px;font-size:15px;color:var(--text-2);max-width:660px}

/* ---------- features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.feature{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--sh-1);transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease)}
.feature:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.feature .f-ico{width:44px;height:44px;border-radius:12px;background:var(--lime-soft);color:#3F6212;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:18px}
.feature h3{font-size:18px;font-weight:600;margin-bottom:10px}
.feature p{font-size:15px;color:var(--text-2)}

/* ---------- show cards ---------- */
.show-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.show-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease)}
.show-card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.show-card-link{display:flex;flex-direction:column;height:100%}
.show-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.show-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.show-card:hover .show-thumb img{transform:scale(1.03)}
.show-thumb .badge{position:absolute;left:14px;top:14px}
.show-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.show-body h3{font-size:20px;font-weight:600;line-height:1.4}
.show-body p{font-size:15px;color:var(--text-2)}
.show-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.show-meta i{margin-right:6px}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- dark panel ---------- */
.dark-panel{background:var(--graphite);border-radius:var(--r-block);padding:48px;color:#fff;border:1px solid rgba(255,255,255,.06)}
.dark-panel h2{color:#fff;font-size:clamp(24px,3vw,34px)}
.dark-panel .sub{margin-top:14px;font-size:15px;color:rgba(255,255,255,.62);max-width:620px}
.dark-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12)}
.dark-stat .v{font-family:var(--mono);font-size:clamp(28px,4vw,42px);font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums;line-height:1.1}
.dark-stat .k{margin-top:8px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.55)}
.dark-note{margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.6)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{padding-top:22px;border-top:2px solid var(--line);transition:border-color .18s var(--ease)}
.step:hover{border-color:var(--lime)}
.step .num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em}
.step h3{font-size:18px;font-weight:600;margin:10px 0 8px}
.step p{font-size:15px;color:var(--text-2)}

/* ---------- subscribe card ---------- */
.sub-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center}
.sub-card .points li{display:flex;gap:12px;font-size:15px;color:var(--text-2);margin-bottom:14px}
.sub-card .points i{color:var(--lime-dark);margin-top:6px;font-size:11px}
.field{display:flex;flex-direction:column;gap:14px}
.field input,.field select{height:48px;border-radius:10px;border:1px solid var(--line);background:var(--paper);padding:0 16px;font-size:15px;outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease)}
.field input:focus,.field select:focus{border-color:var(--ink);background:var(--white);box-shadow:0 0 0 3px rgba(190,242,100,.45)}
.sub-ok{background:var(--lime-soft);border:1px solid var(--lime-dark);color:#3F6212;border-radius:12px;padding:16px;font-size:15px;font-weight:600}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);margin-top:8px}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0 24px 18px;text-align:left;font-size:20px;font-weight:600;color:var(--ink);transition:color .18s var(--ease)}
.faq-q:hover{color:#3F6212}
.faq-q::before{content:"";position:absolute;left:0;top:26px;width:3px;height:22px;background:var(--lime);opacity:0;transition:opacity .18s var(--ease)}
.faq-item.open .faq-q::before{opacity:1}
.faq-q .ico{flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--text-3);transition:transform .24s var(--ease),color .18s var(--ease)}
.faq-item.open .faq-q .ico{transform:rotate(45deg);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 0 24px 18px;font-size:16px;color:var(--text-2);max-width:900px}

/* ---------- cta band ---------- */
.cta-band{background:var(--graphite);border-radius:var(--r-block);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;border:1px solid rgba(255,255,255,.06)}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);max-width:620px}
.cta-band p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.62);max-width:600px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.back-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:32px}

/* ---------- footer ---------- */
.site-footer{background:var(--graphite);color:#fff;padding:72px 0 32px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.6);max-width:330px}
.social-row{display:flex;gap:12px;margin-top:20px}
.social-row a{width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.75);transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease)}
.social-row a:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5);margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:15px;color:rgba(255,255,255,.78);transition:color .18s var(--ease)}
.footer-col ul a:hover{color:var(--lime)}
.footer-sub{display:flex;gap:8px;margin-top:14px}
.footer-sub input{flex:1;min-width:0;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;outline:none;transition:border-color .18s var(--ease)}
.footer-sub input::placeholder{color:rgba(255,255,255,.4)}
.footer-sub input:focus{border-color:var(--lime)}
.footer-sub button{height:44px;padding:0 20px;border-radius:10px;background:var(--lime);color:var(--ink);font-weight:600;font-size:14px;transition:background-color .18s var(--ease)}
.footer-sub button:hover{background:var(--lime-dark)}
.footer-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom{margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:var(--white);transform:translateY(-100%);transition:transform .3s var(--ease);padding:20px;overflow-y:auto;display:flex;flex-direction:column}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px}
.drawer-nav{margin-top:24px;display:flex;flex-direction:column;gap:6px}
.drawer-nav a{font-size:22px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink);transition:color .18s var(--ease)}
.drawer-nav a:hover{color:#3F6212}
.drawer-nav a.active{color:#3F6212}
.drawer-cta{margin-top:auto;padding-top:24px}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .search-box{display:none}
  .menu-btn{display:flex}
  .nav-right{margin-left:auto}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sub-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .cat-hero-inner{padding:28px 22px}
  .cat-hero .lead{font-size:14.5px}
  .hero-stat{padding-right:20px;margin-right:20px;margin-bottom:12px}
  .hero-stat .v{font-size:17px}
  .show-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .dark-stats{grid-template-columns:1fr}
  .dark-panel,.cta-band{padding:28px}
  .section-head{margin-bottom:28px}
  .faq-q{font-size:18px;padding:20px 0 20px 16px}
  .faq-a p{padding:0 0 20px 16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .sub-card{padding:24px}
}
@media (max-width:520px){
  .hero-stats{flex-direction:column;gap:12px}
  .hero-stat{border-right:0;padding-right:0;margin-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --volt:#BEF264;
  --volt-deep:#A3E635;
  --volt-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --text:#17191C;
  --text-2:#4B5057;
  --text-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --r-card:16px;
  --r-img:14px;
  --r-block:24px;
  --shadow-1:0 1px 2px rgba(16,18,20,.04);
  --shadow-2:0 12px 32px -12px rgba(16,18,20,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  padding:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;height:auto}
button{font-family:inherit}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 40px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -14px rgba(16,18,20,.28)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);text-decoration:none;letter-spacing:.01em;white-space:nowrap}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--volt);color:var(--ink);display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:16px;font-weight:500;color:var(--text-2);text-decoration:none;letter-spacing:.02em;transition:color var(--dur) var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--volt);transition:width var(--dur) var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;min-width:220px;padding:0 14px;border-radius:999px;background:var(--paper);border:1px solid var(--line);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.search-box:focus-within{border-color:var(--volt);box-shadow:0 0 0 3px rgba(190,242,100,.35)}
.search-box i{font-size:13px;color:var(--text-3)}
.search-box input{width:100%;border:0;outline:none;background:transparent;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.menu-btn{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:17px;cursor:pointer;transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease)}
.menu-btn:hover{border-color:var(--ink);background:var(--paper)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  text-decoration:none;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--volt);color:var(--ink)}
.btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--paper);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:focus-visible,.nav-link:focus-visible,.link-arrow:focus-visible,.tl-item:focus-visible,.menu-btn:focus-visible,input:focus-visible{outline:2px solid var(--volt-deep);outline-offset:2px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);text-decoration:none}
.link-arrow i{transition:transform var(--dur) var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  padding:88px 0 40px;display:none;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-link{display:block;padding:20px 0;font-size:22px;font-weight:600;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--ink)}
.drawer-link.is-active::before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;background:var(--volt);margin-right:12px;vertical-align:middle}
.drawer-cta{width:100%;margin-top:28px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:20px 0 0}
.breadcrumb a{color:var(--text-3);text-decoration:none}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb span.sep{color:#C9C9C2}
.breadcrumb .current{color:var(--ink);font-weight:500}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  background-color:var(--paper);
  background-image:linear-gradient(180deg,rgba(246,246,242,.94),rgba(246,246,242,1)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding-bottom:36px;
}
.cat-hero-inner{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;padding-top:22px}
.cat-hero-main{max-width:720px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--volt-soft);color:#3F6212;font-size:12px;font-weight:600;letter-spacing:.06em}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--volt-deep);display:inline-block}
.cat-title{font-size:clamp(32px,5vw,52px);line-height:1.1;font-weight:800;letter-spacing:-.02em;margin:16px 0 12px;color:var(--ink)}
.cat-lead{font-size:15px;color:var(--text-2);max-width:640px}
.cat-stats{display:flex;gap:32px;padding:16px 20px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--shadow-1)}
.stat-item{display:flex;flex-direction:column;gap:2px}
.stat-num{font-size:22px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.stat-label{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--text-2)}
.chip.is-key{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- 区块 ---------- */
.section{padding:clamp(56px,8vw,104px) 0}
.section-tight{padding:clamp(40px,5vw,64px) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.eyebrow{display:block;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3);margin-bottom:10px}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.section-sub{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-block);padding:40px;box-shadow:var(--shadow-1)}
@media (max-width:767px){.panel{padding:24px}}

/* ---------- 时间线 ---------- */
.timeline{position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:12px;bottom:12px;width:1px;background:var(--line)}
.tl-group{position:relative;padding-left:32px;margin-bottom:44px}
.tl-group:last-child{margin-bottom:0}
.tl-group-head{position:relative;display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:10px}
.tl-dot{position:absolute;left:-32px;top:6px;width:15px;height:15px;border-radius:50%;background:var(--volt);border:4px solid #fff;box-shadow:0 0 0 1px var(--line)}
.tl-group-head h2{font-size:20px;font-weight:700;color:var(--ink);line-height:1.5}
.tl-count{font-size:12px;color:var(--text-3);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.tl-list li{position:relative}
.tl-list li::before{
  content:"";position:absolute;left:-28px;top:24px;width:7px;height:7px;border-radius:50%;
  background:#D8D8D1;transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.tl-list li:hover::before{background:var(--volt-deep);transform:scale(1.5)}
.tl-item{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:16px 8px 16px 0;border-bottom:1px solid var(--line);
  text-decoration:none;transition:transform var(--dur) var(--ease);
}
.tl-list li:last-child .tl-item{border-bottom:0;padding-bottom:4px}
.tl-item:hover{transform:translateX(4px)}
.tl-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.tl-item:hover .tl-title{text-decoration:underline;text-decoration-color:var(--volt);text-decoration-thickness:2px;text-underline-offset:4px}
.tl-meta{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--text-3);white-space:nowrap}
.tl-meta span{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.tl-meta .tl-tag{font-family:inherit;padding:3px 10px;border-radius:999px;background:var(--paper);color:var(--text-2);font-size:12px}
@media (max-width:767px){
  .tl-item{flex-direction:column;align-items:flex-start;gap:6px;padding:14px 0}
  .tl-meta{flex-wrap:wrap;gap:10px;white-space:normal}
  .tl-list li::before{top:20px}
}

/* ---------- 精选图文 ---------- */
.feature-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
@media (max-width:1023px){.feature-grid{grid-template-columns:1fr;gap:32px}}
.feature-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-2)}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;border-radius:0}
.feature-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;font-size:13px;color:rgba(255,255,255,.9);background:linear-gradient(180deg,rgba(16,18,20,0),rgba(16,18,20,.82))}
.point-list{display:flex;flex-direction:column;gap:20px;margin:24px 0 32px}
.point-list li{display:flex;gap:14px;align-items:flex-start}
.point-mark{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--volt);color:var(--ink);display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:4px}
.point-body h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:4px;line-height:1.5}
.point-body p{font-size:15px;color:var(--text-2)}

/* ---------- 三栏卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--shadow-2)}
.card-icon{width:44px;height:44px;border-radius:12px;background:var(--volt-soft);color:#3F6212;display:grid;place-items:center;font-size:17px;margin-bottom:18px}
.card h3{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:10px;line-height:1.4}
.card p{font-size:15px;color:var(--text-2)}
.card .card-step{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-variant-numeric:tabular-nums;display:block;margin-bottom:8px}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-block);overflow:hidden}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--volt);transform:scaleY(0);transform-origin:top;transition:transform var(--dur) var(--ease)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 28px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:20px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-q:hover{background:#FCFCFA}
.faq-icon{flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;color:var(--ink);font-size:15px;transition:transform 240ms var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a p{padding:0 28px 26px;font-size:16px;color:var(--text-2);line-height:1.85;max-width:840px}
@media (max-width:640px){
  .faq-q{padding:20px;font-size:17px}
  .faq-a p{padding:0 20px 22px;font-size:15px}
}

/* ---------- CTA 带 ---------- */
.cta-band{padding:0 0 clamp(56px,8vw,96px)}
.cta-inner{
  background:var(--graphite);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-block);padding:48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);line-height:1.25;font-weight:700;color:#fff;letter-spacing:-.01em}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.66);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:640px){.cta-inner{padding:28px}}

/* ---------- 返回行 ---------- */
.back-row{display:flex;flex-wrap:wrap;gap:12px;padding:0 0 clamp(40px,5vw,64px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--graphite);color:#fff;padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:56px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .brand{color:#fff}
.footer-brand p{margin-top:18px;font-size:14px;color:rgba(255,255,255,.62);max-width:320px}
.social-row{display:flex;gap:10px;margin-top:22px}
.social-row a{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;color:rgba(255,255,255,.78);text-decoration:none;transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease)}
.social-row a:hover{border-color:var(--volt);color:var(--volt);background:rgba(190,242,100,.08)}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.55);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.78);text-decoration:none;transition:color var(--dur) var(--ease)}
.footer-col ul a:hover{color:var(--volt)}
.footer-sub{display:flex;gap:8px;margin-top:14px}
.footer-sub input{flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px;outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.footer-sub input::placeholder{color:rgba(255,255,255,.42)}
.footer-sub input:focus{border-color:var(--volt);box-shadow:0 0 0 3px rgba(190,242,100,.2)}
.footer-sub button{height:44px;padding:0 20px;border-radius:10px;border:0;background:var(--volt);color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:background var(--dur) var(--ease),transform var(--dur) var(--ease)}
.footer-sub button:hover{background:var(--volt-deep);transform:translateY(-1px)}
.footer-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .search-box{display:none}
  .menu-btn{display:inline-flex}
  .nav-wrap{height:60px}
}
@media (max-width:520px){
  .nav-cta{display:none}
  .cat-stats{width:100%;justify-content:space-between;gap:16px}
  .brand{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --lime:#BEF264;
  --lime-dark:#A3E635;
  --lime-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --text:#17191C;
  --text-2:#4B5057;
  --text-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --r-card:16px;
  --r-img:14px;
  --r-dark:24px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.04);
  --sh-2:0 12px 32px -12px rgba(16,18,20,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0}
p{margin:0}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 40px}}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
::selection{background:var(--lime-soft);color:var(--ink)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow var(--dur) var(--ease)}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;flex:none}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:16px;font-weight:500;color:var(--text-2);letter-spacing:.02em;padding:6px 0;transition:color var(--dur) var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);color:var(--text-3);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(190,242,100,.35)}
.search-box input{border:0;background:transparent;outline:none;width:160px;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.menu-btn{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--white);color:var(--ink);align-items:center;justify-content:center;cursor:pointer;font-size:16px;transition:background-color var(--dur) var(--ease)}
.menu-btn:hover{background:var(--paper)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-btn);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease)}
.btn-sm{height:40px;padding:0 20px;font-size:15px}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper)}
.btn-ghost:active{transform:translateY(1px)}
.btn-dark-ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,.35)}
.btn-dark-ghost:hover{border-color:var(--white);background:rgba(255,255,255,.08)}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--ink);background:none;border:0;padding:0;cursor:pointer}
.btn-link i{transition:transform var(--dur) var(--ease)}
.btn-link:hover i{transform:translateX(3px)}

/* badges & chips */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-btn);font-size:12px;font-weight:600;letter-spacing:.08em;background:var(--lime-soft);color:var(--ink)}
.badge-live{background:rgba(255,74,28,.12);color:var(--live)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--live);animation:pulse 1.8s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--white);font-size:13px;color:var(--text-2)}
.chip-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.22);color:rgba(255,255,255,.86)}

/* hero */
.cat-hero{position:relative;overflow:hidden;background:var(--graphite);color:var(--white)}
.cat-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.40}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,18,20,.94) 0%,rgba(16,18,20,.76) 52%,rgba(16,18,20,.44) 100%)}
.cat-hero-inner{position:relative;z-index:2;padding:28px 0 44px;min-height:260px;max-width:900px}
.cat-hero h1{font-size:clamp(32px,4.6vw,48px);line-height:1.1;font-weight:800;letter-spacing:-.02em;margin:18px 0 14px}
.cat-hero-lead{font-size:16px;line-height:1.8;color:rgba(255,255,255,.76);max-width:640px;margin-bottom:22px}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:22px}
.cat-meta .sep{width:1px;height:12px;background:rgba(255,255,255,.22)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:inherit;transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--lime-dark)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--ink);font-weight:500}
.breadcrumb-light{color:rgba(255,255,255,.62)}
.breadcrumb-light .current{color:rgba(255,255,255,.92)}

/* sections */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700}
.section-sub{margin-top:12px;font-size:15px;color:var(--text-2);max-width:680px}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3);margin-bottom:12px}

/* highlight rows */
.hlist-wrap{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:8px}
.hrow{display:grid;grid-template-columns:200px minmax(0,1fr) 24px;gap:24px;align-items:center;padding:20px 16px;border-radius:12px;transition:background-color var(--dur) var(--ease)}
.hrow+.hrow{border-top:1px solid var(--line)}
.hrow:hover{background:var(--paper)}
.hrow-thumb{position:relative;width:200px;height:130px;border-radius:var(--r-img);overflow:hidden;background:var(--paper);flex:none}
.hrow-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.hrow:hover .hrow-thumb img{transform:scale(1.03)}
.hrow-title{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:8px}
.hrow-desc{font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hrow-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:13px;color:var(--text-3)}
.hrow-meta .tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-btn);background:var(--lime-soft);color:var(--ink);font-size:12px;font-weight:600}
.hrow-arrow{color:var(--text-3);font-size:18px;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.hrow:hover .hrow-arrow{transform:translateX(3px);color:var(--ink)}

/* reason list */
.reason-list{border-top:1px solid var(--line)}
.reason{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:24px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}
.reason-num{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:28px;font-weight:700;color:rgba(16,18,20,.16);transition:color var(--dur) var(--ease);line-height:1}
.reason:hover .reason-num{color:var(--ink)}
.reason h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:6px}
.reason p{font-size:15px;color:var(--text-2);max-width:760px}

/* cards grid */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;height:100%;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.card:hover{transform:translateY(-4px);border-color:rgba(16,18,20,.2);box-shadow:var(--sh-2)}
.card-icon{width:44px;height:44px;border-radius:12px;background:var(--lime-soft);color:var(--ink);display:grid;place-items:center;font-size:18px}
.card h3{font-size:20px;font-weight:600;margin:18px 0 8px;line-height:1.4}
.card p{font-size:15px;color:var(--text-2)}
.card-foot{margin-top:auto;padding-top:18px;font-size:13px;color:var(--text-3)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-num{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-btn);background:var(--lime);color:var(--ink);font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;font-weight:700}
.step h3{font-size:18px;font-weight:600;margin:16px 0 8px}
.step p{font-size:14.5px;color:var(--text-2)}

/* subscribe */
.subscribe{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-dark);padding:48px;display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:start}
.subscribe h2{font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;margin-bottom:14px}
.subscribe p.lead{font-size:15px;color:var(--text-2);margin-bottom:24px}
.point-list{display:grid;gap:14px}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2)}
.point-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--lime)}
.form-grid{display:grid;gap:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select{width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:var(--white);padding:0 16px;font-size:15px;outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.field input:focus,.field select:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(190,242,100,.55)}
.fields-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-success{display:none;background:var(--lime-soft);border:1px solid var(--lime);border-radius:12px;padding:20px 22px;font-size:15px;color:var(--ink)}
.form-success.show{display:block}
.form-note{font-size:13px;color:var(--text-3)}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:var(--lime);opacity:0;transition:opacity var(--dur) var(--ease)}
.faq-item.open::before{opacity:1}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;background:none;border:0;padding:24px 0 24px 16px;font-size:20px;font-weight:600;line-height:1.5;text-align:left;color:var(--ink);cursor:pointer;transition:color var(--dur) var(--ease)}
.faq-q:hover{color:var(--text-2)}
.faq-icon{flex:none;width:20px;height:20px;color:var(--text-3);transition:transform .24s var(--ease),color var(--dur) var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 0 24px 16px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:860px}

/* cta band */
.cta-band{background:var(--graphite);color:var(--white);border-radius:var(--r-dark);padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;border:1px solid rgba(255,255,255,.08)}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;margin-bottom:12px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.72);max-width:580px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px}

/* footer */
.site-footer{background:var(--graphite);color:var(--white);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:var(--white);margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:330px;margin-bottom:20px}
.social-row{display:flex;gap:12px}
.social-row a{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.18);display:grid;place-items:center;color:rgba(255,255,255,.75);transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.social-row a:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:15px;color:rgba(255,255,255,.78);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-sub{display:flex;gap:8px;margin:16px 0 12px}
.footer-sub input{flex:1;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);padding:0 14px;font-size:14px;color:var(--white);outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.footer-sub input::placeholder{color:rgba(255,255,255,.4)}
.footer-sub input:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(190,242,100,.25)}
.footer-sub button{height:44px;padding:0 20px;border-radius:10px;border:0;background:var(--lime);color:var(--ink);font-weight:600;cursor:pointer;transition:background-color var(--dur) var(--ease)}
.footer-sub button:hover{background:var(--lime-dark)}
.footer-note{font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5)}

/* responsive */
@media(max-width:1023px){
  .nav-links{position:fixed;left:0;right:0;top:68px;bottom:0;z-index:70;background:var(--white);flex-direction:column;align-items:flex-start;gap:6px;padding:28px 20px 40px;overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease)}
  .nav-links.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{font-size:22px;font-weight:600;padding:14px 0;width:100%;color:var(--ink)}
  .nav-link::after{bottom:6px}
  .menu-btn{display:inline-flex}
  .search-box{display:none}
  .subscribe{grid-template-columns:1fr;padding:32px;gap:32px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-band{padding:40px 32px}
}
@media(max-width:767px){
  .nav-wrap{height:60px}
  .nav-links{top:60px}
  .brand{font-size:16px}
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .section-head{margin-bottom:28px}
  .hrow{grid-template-columns:112px minmax(0,1fr);gap:16px;padding:16px 12px}
  .hrow-thumb{width:112px;height:80px}
  .hrow-title{font-size:17px}
  .hrow-desc{font-size:14px}
  .hrow-arrow{display:none}
  .reason{grid-template-columns:44px minmax(0,1fr);gap:16px;padding:22px 0}
  .reason-num{font-size:20px}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .fields-2{grid-template-columns:1fr}
  .subscribe{padding:24px}
  .cta-band{padding:32px 24px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .faq-q{font-size:17px;padding:20px 0 20px 14px}
  .faq-a-inner{padding-left:14px;font-size:15px}
  .cat-hero-inner{padding:22px 0 32px;min-height:auto}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --ink:#101214;
  --graphite:#17191C;
  --lime:#BEF264;
  --lime-dark:#A3E635;
  --lime-soft:#ECFCCB;
  --paper:#F6F6F2;
  --white:#FFFFFF;
  --text:#17191C;
  --text-2:#4B5057;
  --text-3:#8B9099;
  --line:#E6E6E0;
  --live:#FF4A1C;
  --radius-card:16px;
  --radius-img:14px;
  --radius-dark:24px;
  --shadow-1:0 1px 2px rgba(16,18,20,.04);
  --shadow-2:0 12px 32px -12px rgba(16,18,20,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime-dark);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 40px;}}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-first{padding-top:44px;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(16,18,20,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;padding:6px 0;font-size:16px;font-weight:500;letter-spacing:.02em;color:var(--text-2);
  transition:color 180ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--lime-dark);
  transition:width 180ms var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:16px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:var(--paper);border:1px solid var(--line);border-radius:999px;color:var(--text-3);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.search-box input{
  width:150px;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(190,242,100,.4);}
.menu-btn{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);
  font-size:18px;transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.menu-btn:hover{border-color:var(--ink);}
@media (max-width:1023px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .menu-btn{display:inline-flex;}
}
@media (max-width:639px){
  .nav-cta{display:none;}
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:14px 28px;border-radius:999px;border:1px solid transparent;
  transition:transform 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:var(--white);border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--paper);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.ghost-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);
  transition:color 180ms var(--ease);
}
.ghost-link i{transition:transform 180ms var(--ease);}
.ghost-link:hover i{transform:translateX(3px);}

/* Breadcrumb */
.breadcrumb-row{padding-top:24px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);transition:color 180ms var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:#C9C9C2;}
.breadcrumb .current{color:var(--ink);font-weight:500;}

/* Category hero */
.cat-hero{
  background:var(--white);border-bottom:1px solid var(--line);
  padding:32px 0 40px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--lime-soft);color:var(--text-2);font-size:12px;font-weight:600;letter-spacing:.08em;
}
.cat-hero h1{
  margin:16px 0 12px;font-size:clamp(32px,5vw,52px);line-height:1.1;font-weight:800;letter-spacing:-.03em;
}
.cat-lead{max-width:640px;margin:0;font-size:15px;color:var(--text-2);}
.meta-row{
  display:flex;flex-wrap:wrap;gap:24px;margin:20px 0 18px;
  font-size:14px;color:var(--text-2);font-variant-numeric:tabular-nums;
}
.meta-row b{font-size:18px;font-weight:700;color:var(--ink);margin-right:4px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper);
  font-size:12px;font-weight:600;color:var(--text-2);
}

/* Section head */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:28px;
}
.section-head h2{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.02em;}
.section-sub{margin:8px 0 0;font-size:15px;color:var(--text-2);max-width:620px;}

/* Feature card */
.feature-card{
  position:relative;display:block;overflow:hidden;border-radius:var(--radius-dark);
  border:1px solid var(--line);background:var(--graphite);min-height:360px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.feature-card img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;
  transition:transform 420ms var(--ease);
}
.feature-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,18,20,.20) 10%,rgba(16,18,20,.90) 100%);
}
.feature-body{
  position:relative;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;
  min-height:360px;padding:32px;color:#fff;
}
.feature-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
.feature-body h3{
  margin:0 0 12px;font-size:clamp(22px,3vw,34px);line-height:1.25;font-weight:800;letter-spacing:-.02em;max-width:820px;
}
.feature-body p{margin:0 0 16px;max-width:680px;font-size:15px;color:rgba(255,255,255,.72);}
.feature-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:13px;color:rgba(255,255,255,.6);font-variant-numeric:tabular-nums;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(190,242,100,.5);}
.feature-card:hover img{transform:scale(1.03);}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper);font-size:12px;font-weight:600;color:var(--text-2);
}
.badge-lime{background:var(--lime);border-color:transparent;color:var(--ink);}
.badge-dark{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.24);color:#fff;}

/* Compact columns */
.compact-cols{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.compact-cols{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.compact-cols{grid-template-columns:repeat(3,1fr);gap:48px;}}
.compact-col h4{
  margin:0 0 12px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-3);
}
.compact-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.compact-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.compact-list a{
  font-size:16px;font-weight:500;color:var(--ink);
  background-image:linear-gradient(var(--lime),var(--lime));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 6px;
  transition:background-size 200ms var(--ease),color 180ms var(--ease);
}
.compact-list a:hover{background-size:100% 6px;}
.compact-list time{
  flex:0 0 auto;font-size:13px;color:var(--text-3);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;
}

/* Method cards */
.method-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.method-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.method-grid{grid-template-columns:repeat(3,1fr);}}
.method-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.method-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,18,20,.2);}
.method-card h3{margin:14px 0 6px;font-size:20px;line-height:1.4;font-weight:600;}
.method-card .method-note{margin:0 0 16px;font-size:14px;color:var(--text-2);}
.method-card dl{margin:0;}
.method-card dl div{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:12px 0;border-top:1px dashed var(--line);
}
.method-card dt{font-size:13px;color:var(--text-3);flex:0 0 auto;}
.method-card dd{margin:0;font-size:14px;font-weight:500;color:var(--ink);text-align:right;}

/* Step list */
.step-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.step-list li{
  display:flex;align-items:center;gap:24px;padding:24px 8px;border-bottom:1px solid var(--line);
  transition:background 180ms var(--ease);
}
.step-list li:hover{background:var(--white);}
.step-no{
  flex:0 0 auto;min-width:64px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:32px;font-weight:700;line-height:1;color:rgba(16,18,20,.2);
  transition:color 180ms var(--ease);
}
.step-list li:hover .step-no{color:var(--ink);}
.step-body{flex:1 1 auto;}
.step-body h3{margin:0 0 4px;font-size:20px;line-height:1.4;font-weight:600;}
.step-body p{margin:0;font-size:15px;color:var(--text-2);max-width:720px;}
.step-time{flex:0 0 auto;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
@media (max-width:639px){
  .step-list li{flex-wrap:wrap;gap:12px;}
  .step-time{width:100%;}
}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{position:relative;border-bottom:1px solid var(--line);}
.faq-item::before{
  content:"";position:absolute;left:-14px;top:22px;bottom:22px;width:3px;border-radius:2px;
  background:var(--lime-dark);transform:scaleY(0);transform-origin:top;
  transition:transform 240ms var(--ease);
}
.faq-item.open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;background:none;border:0;text-align:left;
  font-size:20px;font-weight:600;color:var(--ink);line-height:1.5;
}
.faq-icon{flex:0 0 auto;color:var(--text-3);transition:transform 240ms var(--ease),color 180ms var(--ease);}
.faq-q:hover .faq-icon{color:var(--ink);}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--ink);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);}
.faq-a p{margin:0 0 22px;max-width:820px;font-size:16px;line-height:1.85;color:var(--text-2);}

/* Back row */
.back-row{display:flex;flex-wrap:wrap;gap:12px;padding-bottom:8px;}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-dark);
  background:var(--graphite);border:1px solid rgba(255,255,255,.08);
  padding:40px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.14;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{margin:0 0 8px;font-size:clamp(22px,3vw,32px);line-height:1.2;font-weight:700;letter-spacing:-.02em;}
.cta-band p{margin:0;max-width:560px;font-size:15px;color:rgba(255,255,255,.68);}

/* Footer */
.site-footer{background:var(--graphite);color:#fff;margin-top:64px;padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-bottom:48px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.5fr;gap:48px;}}
.footer-brand .brand{color:#fff;}
.footer-brand p{margin:16px 0;max-width:320px;font-size:14px;color:rgba(255,255,255,.62);}
.social-row{display:flex;gap:12px;}
.social-row a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);color:rgba(255,255,255,.78);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.social-row a:hover{background:var(--lime);color:var(--ink);}
.footer-col h3{
  margin:0 0 16px;font-size:12px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5);
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.8);transition:color 180ms var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-sub{display:flex;gap:8px;margin-top:12px;}
.footer-sub input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;border-radius:10px;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
  color:#fff;font-size:14px;outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4);}
.footer-sub input:focus{border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(190,242,100,.25);}
.footer-sub button{
  flex:0 0 auto;height:44px;padding:0 20px;border:0;border-radius:10px;
  background:var(--lime);color:var(--ink);font-size:15px;font-weight:600;
  transition:background 180ms var(--ease);
}
.footer-sub button:hover{background:var(--lime-dark);}
.footer-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.45);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);padding:24px 0;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* Mobile drawer */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  display:flex;flex-direction:column;
  opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity 180ms var(--ease),transform 180ms var(--ease);
}
.mobile-drawer.open{opacity:1;transform:none;pointer-events:auto;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);
  border-radius:10px;background:#fff;color:var(--ink);font-size:18px;
}
.drawer-nav{padding:24px 20px;display:grid;gap:6px;}
.drawer-nav a{
  display:block;padding:14px 0;font-size:22px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--ink);box-shadow:inset 0 -6px 0 var(--lime);}
.drawer-foot{padding:20px;border-top:1px solid var(--line);margin-top:auto;}

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