/* roulang page: index */
:root{
  --brand:#C9F73A;
  --brand-dark:#AEDC1F;
  --brand-soft:#F3FCDA;
  --ink:#111114;
  --text:#4A4A52;
  --muted:#8A8A93;
  --line:#E6E6E0;
  --paper:#F7F7F4;
  --card:#FFFFFF;
  --accent:#FF5A2B;
  --dark:#111114;
  --dark-text:#F2F2EE;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(17,17,20,.04), 0 8px 24px -14px rgba(17,17,20,.14);
  --shadow-2:0 2px 6px rgba(17,17,20,.06), 0 18px 42px -20px rgba(17,17,20,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{letter-spacing:-.02em;margin:0;font-weight:800;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand);color:var(--ink);}
:focus-visible{outline:2px solid var(--brand-dark);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-title{font-size:clamp(26px,3.2vw,38px);}
.section-sub{color:var(--text);font-size:15px;margin-top:12px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--ink);background:var(--brand);
  padding:6px 14px;border-radius:var(--r-pill);text-transform:uppercase;
}
.eyebrow.ghost{background:transparent;border:1px solid var(--line);color:var(--text);letter-spacing:.1em;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);
  display:grid;place-items:center;font-weight:900;font-size:16px;color:var(--ink);
  box-shadow:0 6px 16px -10px rgba(17,17,20,.5);
}
.brand-text strong{display:block;font-size:15px;font-weight:800;line-height:1.2;letter-spacing:-.01em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  position:relative;padding:9px 15px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--text);
  transition:color .2s var(--ease), background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{background:var(--brand);color:var(--ink);font-weight:700;}
.nav-links a.active::after{display:none;}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-input);background:#fff;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search i{font-size:13px;color:var(--muted);}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;}
.search input::placeholder{color:#B4B4BA;}
.search:focus-within{border-color:var(--brand-dark);box-shadow:0 0 0 3px rgba(201,247,58,.45);}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:12px;background:#fff;cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.hamburger:hover{border-color:var(--brand-dark);background:var(--brand-soft);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:var(--ink);box-shadow:0 10px 24px -14px rgba(17,17,20,.5);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;
  color:var(--ink);padding:6px 2px;border-bottom:2px solid transparent;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.btn-text i{transition:transform .22s var(--ease);}
.btn-text:hover{border-color:var(--brand);}
.btn-text:hover i{transform:translateX(3px);}
.btn-text.back:hover i{transform:translateX(-3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;font-weight:700;letter-spacing:.02em;
  padding:7px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--ink);border:1px solid #DDF2A8;
}
.badge.outline{background:transparent;border:1px solid var(--line);color:var(--text);}
.badge.accent{background:rgba(255,90,43,.1);border-color:rgba(255,90,43,.25);color:var(--accent);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 92px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-220px;right:-180px;width:620px;height:620px;
  background:radial-gradient(circle at center, rgba(201,247,58,.55), rgba(201,247,58,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;}
.hero h1{font-size:clamp(32px,5vw,58px);line-height:1.14;font-weight:900;margin:22px 0 20px;}
.hero h1 .hl{
  background:var(--brand);border-radius:8px;padding:0 10px;
  display:inline-block;transform:translateY(-2px);
}
.hero-lead{font-size:17px;color:var(--text);max-width:560px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:52px;border-top:1px solid var(--line);padding-top:24px;
}
.hero-stats .stat{padding-right:18px;border-right:1px solid var(--line);}
.hero-stats .stat:last-child{border-right:0;padding-right:0;}
.hero-stats .num{font-size:26px;font-weight:900;letter-spacing:-.03em;}
.hero-stats .num span{color:var(--accent);font-size:14px;font-weight:700;margin-left:2px;}
.hero-stats .lab{font-size:13px;color:var(--muted);line-height:1.6;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-card);background:var(--ink);
  box-shadow:var(--shadow-2);
}
.float-card{
  position:absolute;left:-20px;bottom:-24px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 18px;box-shadow:var(--shadow-2);max-width:262px;
}
.float-card .fc-title{font-size:13px;font-weight:800;letter-spacing:.04em;color:var(--ink);}
.float-card ul{margin-top:10px;display:grid;gap:8px;}
.float-card li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text);line-height:1.5;}
.float-card li i{color:var(--brand-dark);font-size:12px;}

/* ---------- 功能 / 服务 ---------- */
.grid-sticky{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.sticky-head{position:sticky;top:104px;}
.func-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.func-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.func-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DDF2A8;}
.func-card.wide{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;}
.func-num{
  font-size:13px;font-weight:900;color:var(--ink);background:var(--brand);
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;margin-bottom:18px;
}
.func-card h3{font-size:20px;margin-bottom:10px;}
.func-card p{font-size:15px;color:var(--text);}
.func-link{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--ink);
}
.func-link i{transition:transform .22s var(--ease);}
.func-link:hover i{transform:translateX(4px);}
.func-side-img{border-radius:14px;aspect-ratio:4/3;object-fit:cover;background:var(--ink);width:100%;}

/* ---------- 深色数据区 ---------- */
.section-dark{background:var(--dark);color:var(--dark-text);position:relative;overflow:hidden;}
.section-dark::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;
  background:radial-gradient(circle at center, rgba(201,247,58,.22), rgba(201,247,58,0) 70%);
}
.section-dark .section-title{color:#fff;}
.section-dark .section-sub{color:#A8A8B0;}
.data-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px;position:relative;z-index:2;
}
.data-cell{padding:8px 28px;border-right:1px solid rgba(255,255,255,.12);}
.data-cell:last-child{border-right:0;}
.data-cell .val{font-size:clamp(34px,4.4vw,52px);font-weight:900;color:var(--brand);letter-spacing:-.04em;line-height:1.05;}
.data-cell .name{font-size:15px;font-weight:700;color:#fff;margin-top:10px;}
.data-cell .desc{font-size:13.5px;color:#9C9CA6;line-height:1.7;margin-top:6px;}

/* ---------- 案例轨道 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;margin:0 -4px;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:#D8D8D2;border-radius:999px;}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DDF2A8;}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--ink);}
.rail-body{padding:20px 20px 22px;}
.rail-body h3{font-size:17px;margin:12px 0 8px;}
.rail-body p{font-size:14px;color:var(--text);}

/* ---------- 方案阶梯 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:end;}
.tier{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--shadow-1);position:relative;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease);
}
.tier:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.tier.focus{border-top:4px solid var(--brand);padding-top:36px;}
.tier .big-num{
  font-size:52px;font-weight:900;letter-spacing:-.05em;
  color:transparent;-webkit-text-stroke:1.6px var(--ink);line-height:1;opacity:.85;
}
.tier.focus .big-num{color:transparent;-webkit-text-stroke:1.6px var(--brand-dark);}
.tier h3{font-size:21px;margin:18px 0 10px;}
.tier p{font-size:15px;color:var(--text);min-height:84px;}
.tier ul{margin:18px 0 26px;display:grid;gap:10px;}
.tier li{display:flex;gap:10px;font-size:14.5px;color:var(--text);line-height:1.7;}
.tier li i{color:var(--brand-dark);margin-top:6px;font-size:12px;}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DDF2A8;}
.post-cover{display:block;background:var(--ink);}
.post-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-title{font-size:17.5px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-excerpt{
  font-size:14px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.post-meta .arrow-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--ink);font-size:13px;}
.post-meta .arrow-link i{transition:transform .22s var(--ease);}
.post-meta .arrow-link:hover i{transform:translateX(3px);}
.empty-state{
  border:1.5px dashed var(--line);border-radius:var(--r-card);background:#fff;
  padding:64px 24px;text-align:center;grid-column:1 / -1;
}
.empty-state i{font-size:28px;color:var(--brand-dark);}
.empty-state p{font-size:14.5px;color:var(--muted);margin-top:14px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:18px;align-items:flex-start;
  padding:24px 4px;font-size:17px;font-weight:600;position:relative;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:-14px;top:26px;bottom:26px;width:3px;
  background:var(--brand);border-radius:3px;opacity:0;transition:opacity .2s var(--ease);
}
.faq-item[open] summary::before{opacity:1;}
.faq-item .idx{font-size:13px;font-weight:900;color:var(--accent);padding-top:4px;min-width:26px;}
.faq-item summary:hover{color:var(--accent);}
.faq-answer{padding:0 4px 26px 44px;font-size:15px;color:var(--text);}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--shadow-1);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:15px;outline:0;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea{min-height:126px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:#B4B4BA;}
.field input:focus,.field textarea:focus{border-color:var(--brand-dark);box-shadow:0 0 0 3px rgba(201,247,58,.4);}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7;}
.info-card{background:var(--ink);color:var(--dark-text);border-radius:var(--r-card);padding:32px;}
.info-card h3{font-size:20px;color:#fff;margin-bottom:16px;}
.info-list{display:grid;gap:18px;margin-top:8px;}
.info-list li{display:flex;gap:14px;font-size:14.5px;color:#C8C8D0;line-height:1.75;}
.info-list i{color:var(--brand);margin-top:6px;}
.info-list strong{color:#fff;display:block;font-size:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B9C2;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;}
.footer-brand em{display:block;font-style:normal;font-size:11.5px;color:#8A8A93;letter-spacing:.05em;}
.site-footer p{font-size:14px;line-height:1.85;color:#9C9CA6;max-width:420px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14.5px;color:#B9B9C2;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8A8A93;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease), transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(17,17,20,.45);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease), visibility .25s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);background:#fff;
  z-index:95;transform:translateX(100%);transition:transform .28s var(--ease);
  padding:24px 22px;overflow-y:auto;
}
.drawer.open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;
}
.drawer-close:hover{background:var(--brand-soft);}
.drawer .search{width:100%;margin-bottom:22px;}
.drawer-links{display:grid;gap:6px;margin-bottom:24px;}
.drawer-links a{
  padding:13px 14px;border-radius:12px;font-size:15.5px;font-weight:600;color:var(--text);
  border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a.active{background:var(--brand-soft);color:var(--ink);border-color:#DDF2A8;}
.drawer-cta{display:grid;gap:12px;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .search{width:170px;}
}
@media (max-width:1024px){
  .nav-links,.search,.nav-tools .btn-text,.nav-tools .btn-primary{display:none;}
  .hamburger{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{order:-1;}
  .float-card{left:auto;right:12px;bottom:-18px;}
  .grid-sticky{grid-template-columns:1fr;gap:36px;}
  .sticky-head{position:static;}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .data-cell:nth-child(2){border-right:0;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .tier-grid{grid-template-columns:1fr;align-items:stretch;}
  .tier p{min-height:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:68px 0;}
  .section-sm{padding:56px 0;}
  .hero{padding:52px 0 72px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .hero-stats .stat:nth-child(2){border-right:0;}
  .func-grid{grid-template-columns:1fr;}
  .func-card.wide{grid-column:span 1;grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .hero h1{font-size:30px;}
  .float-card{position:static;margin-top:16px;max-width:none;}
  .data-grid{grid-template-columns:1fr;}
  .data-cell{border-right:0;padding:8px 0 20px;border-bottom:1px solid rgba(255,255,255,.1);}
  .data-cell:last-child{border-bottom:0;}
  .form-card,.info-card{padding:24px 20px;}
  .faq-item summary{font-size:16px;gap:12px;}
  .faq-answer{padding-left:38px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#111114;
  --ink-soft:#4A4A52;
  --muted:#8A8A93;
  --line:#E6E6E0;
  --paper:#F7F7F4;
  --card:#FFFFFF;
  --lime:#C9F73A;
  --lime-dark:#AEDC1F;
  --lime-soft:#F3FCDA;
  --flame:#FF5A2B;
  --radius-card:18px;
  --radius-input:12px;
  --shadow-sm:0 1px 2px rgba(17,17,20,.04), 0 8px 24px -14px rgba(17,17,20,.14);
  --shadow-md:0 2px 6px rgba(17,17,20,.06), 0 18px 40px -18px rgba(17,17,20,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
::selection{background:var(--lime);color:var(--ink);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-logo{
  width:38px;height:38px;
  border-radius:12px;
  background:var(--lime);
  color:var(--ink);
  display:grid;place-items:center;
  font-weight:900;font-size:19px;
  letter-spacing:-.04em;
}
.brand-text strong{
  display:block;
  font-size:15px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
  white-space:nowrap;
}
.brand-text em{
  display:block;
  font-style:normal;
  font-size:11px;
  color:var(--muted);
  letter-spacing:.02em;
  line-height:1.4;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-inline:auto;
}
.nav-links a{
  position:relative;
  padding:8px 14px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-soft);
  border-radius:999px;
  transition:color .22s var(--ease), background .22s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
  border-radius:2px;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{
  background:var(--lime);
  color:var(--ink);
  font-weight:800;
}
.nav-links a.active::after{display:none;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;
  width:210px;
  padding:0 14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search-box i{font-size:13px;color:var(--muted);}
.search-box input{
  border:0;outline:none;background:transparent;
  width:100%;font-size:13.5px;
}
.search-box input::placeholder{color:var(--muted);}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 2px rgba(201,247,58,.55);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.01em;
  transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;justify-content:center;
  font-size:17px;
}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(17,17,20,.4);
  opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease), visibility .26s var(--ease);
  z-index:60;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:308px;
  max-width:86vw;
  background:#fff;
  z-index:70;
  padding:22px 22px 32px;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head strong{font-size:15px;font-weight:800;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  display:grid;place-items:center;font-size:16px;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  background:var(--paper);
}
.drawer-search input{border:0;outline:none;background:transparent;width:100%;font-size:14px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  padding:12px 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-soft);
}
.drawer-nav a.active{background:var(--lime-soft);color:var(--ink);font-weight:800;}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-cta .btn{width:100%;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:22px 0 0;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-soft);border-bottom:1px solid transparent;transition:color .2s var(--ease), border-color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--lime);}
.breadcrumb span.sep{color:#C9C9C2;}
.breadcrumb em{font-style:normal;color:var(--muted);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article head ---------- */
.article-head{
  padding:26px 0 34px;
  border-bottom:1px solid var(--line);
}
.article-head h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.24;
  font-weight:900;
  letter-spacing:-.02em;
  margin:16px 0 18px;
  color:var(--ink);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 14px;
  border-radius:999px;
  background:var(--lime-soft);
  color:var(--ink);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
}
.badge-outline{
  background:transparent;
  border:1px solid var(--line);
  color:var(--ink-soft);
}
.meta-row{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--flame);font-size:12px;}

/* ---------- Layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px);
  justify-content:center;
  gap:52px;
  padding:44px 0 20px;
}
.article-main{min-width:0;}
.article-toc{display:none;}
@media (min-width:1180px){
  .article-layout{grid-template-columns:minmax(0,760px) 236px;}
  .article-toc{display:block;position:sticky;top:96px;align-self:start;}
}
.toc-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
}
.toc-card h2{
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--muted);
  font-weight:700;
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:8px 10px;
  font-size:13.5px;
  line-height:1.55;
  color:var(--ink-soft);
  border-radius:10px;
  border-left:2px solid transparent;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.toc-list a:hover{background:var(--lime-soft);color:var(--ink);}
.toc-list a.is-current{background:var(--lime-soft);color:var(--ink);font-weight:700;border-left-color:var(--lime);}
.toc-hint{font-size:12.5px;color:var(--muted);line-height:1.7;}

/* ---------- Article body ---------- */
.article-body{
  font-size:16px;
  line-height:1.85;
  color:var(--ink-soft);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 22px;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.4vw,27px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.4;
  color:var(--ink);
  margin:48px 0 20px;
  padding-left:18px;
  scroll-margin-top:92px;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.32em;
  width:4px;height:20px;
  border-radius:2px;
  background:var(--lime);
}
.article-body h3{
  font-size:18.5px;
  font-weight:800;
  color:var(--ink);
  margin:34px 0 14px;
  line-height:1.5;
  scroll-margin-top:92px;
}
.article-body h4{font-size:16px;font-weight:800;color:var(--ink);margin:26px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:10px;}
.article-body li::marker{color:var(--flame);font-weight:700;}
.article-body strong{color:var(--ink);font-weight:800;}
.article-body a{color:var(--ink);border-bottom:2px solid var(--lime);transition:background .2s var(--ease);}
.article-body a:hover{background:var(--lime-soft);}
.article-body blockquote{
  margin:28px 0;
  padding:16px 22px;
  border-left:3px solid var(--lime);
  background:var(--lime-soft);
  border-radius:0 12px 12px 0;
  color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:26px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14px;margin:26px 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--paper);font-weight:700;color:var(--ink);}
.article-body pre{
  background:var(--ink);color:#F2F2EE;padding:18px;border-radius:12px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;margin:24px 0;
}
.article-body code{background:var(--lime-soft);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--ink);}
.article-body pre code{background:transparent;padding:0;color:inherit;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- Tags / Nav / Related ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:44px;padding-top:26px;
  border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;align-items:center;
  height:32px;padding:0 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:13px;color:var(--ink-soft);
  transition:border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.tag:hover{border-color:var(--lime);color:var(--ink);transform:translateY(-1px);}

.back-row{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:2px solid var(--lime);
  padding-bottom:2px;
  transition:gap .2s var(--ease), background .2s var(--ease);
}
.text-link:hover{gap:12px;background:var(--lime-soft);}

.related{margin-top:56px;padding-top:38px;border-top:1px solid var(--line);}
.section-title{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--ink);
  line-height:1.35;
}
.section-sub{font-size:14px;color:var(--muted);margin-top:8px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  margin-top:24px;
}
.related-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,247,58,.9);}
.related-thumb{aspect-ratio:16/10;background:var(--ink);}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{
  font-size:15.5px;font-weight:800;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);
}
.related-foot i{font-size:12px;color:var(--flame);}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:64px 28px;
  text-align:center;
}
.empty-state .empty-icon{
  width:64px;height:64px;border-radius:20px;
  background:var(--lime-soft);
  color:var(--ink);
  display:grid;place-items:center;
  margin:0 auto 20px;
  font-size:24px;
}
.empty-state h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:24px;}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:72px;
  background:var(--ink);
  border-radius:24px;
  padding:52px 44px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
  color:#F2F2EE;
}
.cta-band h2{
  font-size:clamp(22px,3vw,32px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.32;
  color:#F2F2EE;
}
.cta-band p{font-size:14.5px;color:#B9B9B2;margin-top:12px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-ghost-light{border:1.5px solid rgba(242,242,238,.45);color:#F2F2EE;}
.btn-ghost-light:hover{background:#F2F2EE;color:var(--ink);border-color:#F2F2EE;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;
  background:var(--ink);
  color:#F2F2EE;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));
  gap:44px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;
  font-weight:900;font-size:20px;letter-spacing:-.04em;
}
.footer-brand strong{display:block;font-size:16px;font-weight:800;color:#F2F2EE;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8A8A93;margin-top:3px;}
.site-footer p{font-size:14px;line-height:1.9;color:#B9B9B2;max-width:420px;}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--lime);font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#D6D6CE;transition:color .2s var(--ease), padding-left .2s var(--ease);}
.footer-col a:hover{color:var(--lime);padding-left:4px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(242,242,238,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:#8A8A93;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-links,.search-box,.header-actions .btn-ghost,.header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{justify-content:space-between;}
  .nav-links{margin-inline:0;}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:44px 32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .article-layout{padding:34px 0 12px;gap:38px;}
  .article-head{padding:20px 0 26px;}
  .article-body{font-size:15.5px;}
  .article-body h2{margin-top:38px;}
  .brand-text em{display:none;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .site-footer{margin-top:72px;padding:52px 0 22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .cta-band{margin-top:56px;padding:36px 24px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .header-inner{height:62px;}
  .brand-logo{width:34px;height:34px;font-size:17px;border-radius:10px;}
  .brand-text strong{font-size:14px;max-width:190px;overflow:hidden;text-overflow:ellipsis;}
  .article-head h1{font-size:26px;}
  .breadcrumb em{max-width:150px;}
  .meta-row{gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --lime:#C9F73A;
  --lime-deep:#AEDC1F;
  --lime-soft:#F3FCDA;
  --ink:#111114;
  --ink-soft:#1B1B20;
  --text:#4A4A52;
  --muted:#8A8A93;
  --line:#E6E6E0;
  --paper:#F7F7F4;
  --card:#FFFFFF;
  --orange:#FF5A2B;
  --radius-card:18px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(17,17,20,.04), 0 8px 24px -14px rgba(17,17,20,.14);
  --shadow-2:0 2px 6px rgba(17,17,20,.06), 0 20px 44px -22px rgba(17,17,20,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.02em;margin:0;font-weight:800;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-weight:900;font-size:20px;line-height:1;
  box-shadow:inset 0 -2px 0 rgba(17,17,20,.12);
}
.brand-text strong{display:block;font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.brand-text em{display:block;font-size:11px;color:var(--muted);font-style:normal;letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-block;padding:8px 15px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--text);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:var(--lime-soft);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{background:var(--lime);color:var(--ink);}
.nav-links a.active::after{transform:scaleX(0);}
.nav-right{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-box i{color:var(--muted);font-size:13px;}
.search-box input{border:0;outline:0;width:170px;font-size:14px;color:var(--ink);background:transparent;}
.search-box input::placeholder{color:#B4B4BB;}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,247,58,.45);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:999px;font-weight:700;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);height:48px;padding:0 24px;font-size:15px;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--lime-deep);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-outline{background:transparent;color:var(--ink);border:1.5px solid var(--ink);height:48px;padding:0 24px;font-size:15px;}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;cursor:pointer;
  font-size:14px;font-weight:700;color:var(--ink);padding:8px 4px;position:relative;
}
.btn-text i{transition:transform .22s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.btn-text::after{content:"";position:absolute;left:4px;right:4px;bottom:2px;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
.btn-text:hover::after{transform:scaleX(1);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  color:var(--ink);cursor:pointer;place-items:center;font-size:16px;
}
@media (max-width:1023px){
  .nav-links{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 20px 20px;
    box-shadow:var(--shadow-2);display:none;
  }
  .site-header.open .nav-links{display:flex;}
  .nav-links a{padding:12px 16px;border-radius:12px;font-size:15px;}
  .nav-links a::after{display:none;}
  .search-box,.nav-right .btn-text{display:none;}
  .nav-toggle{display:grid;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .brand-text strong{font-size:13.5px;}
  .brand-text em{display:none;}
}

/* ---------- 页头横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:82px 0 58px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(17,17,20,.94) 0%,rgba(17,17,20,.78) 52%,rgba(17,17,20,.58) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(242,242,238,.6);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a:hover{color:var(--lime);}
.crumbs .sep{color:rgba(242,242,238,.35);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(201,247,58,.14);border:1px solid rgba(201,247,58,.45);
  color:var(--lime);font-size:12.5px;font-weight:700;letter-spacing:.04em;margin-bottom:20px;
}
.page-hero h1{
  color:#F5F5F1;font-size:clamp(30px,4.6vw,52px);font-weight:900;line-height:1.18;
  max-width:900px;
}
.page-hero h1 .hl{
  display:inline-block;background:var(--lime);color:var(--ink);
  padding:0 12px;border-radius:10px;margin-top:6px;
}
.hero-desc{
  margin-top:22px;max-width:720px;font-size:15.5px;line-height:1.9;color:rgba(242,242,238,.76);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-actions .btn-outline{border-color:rgba(242,242,238,.5);color:#F2F2EE;}
.hero-actions .btn-outline:hover{background:#F2F2EE;color:var(--ink);border-color:#F2F2EE;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.hero-chips span{
  font-size:12.5px;color:rgba(242,242,238,.72);
  padding:5px 13px;border-radius:999px;border:1px solid rgba(242,242,238,.2);
}
@media (max-width:767px){
  .page-hero{padding:58px 0 44px;}
  .hero-desc{font-size:14.5px;}
}

/* ---------- 主体：筛选条 + 大卡列表 ---------- */
.category-main{padding:72px 0 88px;}
.category-layout{display:grid;grid-template-columns:232px 1fr;gap:48px;align-items:start;}
.rail{position:sticky;top:96px;}
.rail-title{
  font-size:12.5px;font-weight:800;letter-spacing:.12em;color:var(--muted);
  text-transform:uppercase;margin-bottom:16px;
}
.rail-list{display:grid;gap:6px;}
.rail-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:12px;font-size:14.5px;font-weight:600;color:var(--text);
  border:1px solid transparent;transition:all .22s var(--ease);
}
.rail-list a i{font-size:11px;color:#C0C0C6;transition:transform .22s var(--ease);}
.rail-list a:hover{background:#fff;border-color:var(--line);color:var(--ink);}
.rail-list a:hover i{transform:translateX(3px);}
.rail-list a.is-current{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.rail-list a.is-current i{color:var(--ink);}
.rail-note{
  margin-top:26px;padding:20px;border-radius:var(--radius-card);background:#fff;border:1px solid var(--line);
}
.rail-note strong{display:block;font-size:14px;color:var(--ink);margin-bottom:8px;}
.rail-note p{font-size:13px;line-height:1.8;color:var(--muted);}
.rail-note .btn-text{margin-top:10px;font-size:13px;}

.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.list-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;}
.list-head p{font-size:13.5px;color:var(--muted);margin-top:6px;}
.list-count{
  font-size:12.5px;font-weight:800;color:var(--ink);background:var(--lime-soft);
  border:1px solid rgba(201,247,58,.9);padding:6px 14px;border-radius:999px;white-space:nowrap;
}
.entry-card{
  display:grid;grid-template-columns:320px 1fr;gap:28px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(201,247,58,.9);}
.entry-thumb{
  position:relative;display:block;border-radius:14px;overflow:hidden;background:var(--ink);aspect-ratio:16/10;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.entry-body{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:800;letter-spacing:.04em;
  background:var(--lime-soft);color:var(--ink);border:1px solid rgba(201,247,58,.85);
}
.badge.alt{background:#FFF1EC;border-color:#FFD5C6;color:#B33A14;}
.entry-body h3{font-size:19px;line-height:1.45;}
.entry-body h3 a:hover{color:#3F4A00;}
.entry-body p{font-size:14.5px;line-height:1.85;color:var(--text);}
.entry-meta{
  display:flex;align-items:center;gap:20px;margin-top:auto;padding-top:14px;
  border-top:1px dashed var(--line);width:100%;flex-wrap:wrap;
}
.entry-meta .time{font-size:12.5px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;}
.entry-meta .time i{color:var(--orange);}
.entry-meta .btn-text{margin-left:auto;font-size:13.5px;}
.entry-divider{height:1px;background:var(--line);border:0;margin:26px 0;}
.list-actions{display:flex;flex-direction:column;align-items:center;gap:18px;margin-top:40px;}
@media (max-width:1023px){
  .category-layout{grid-template-columns:1fr;gap:32px;}
  .rail{position:static;}
  .rail-list{display:flex;flex-wrap:wrap;gap:8px;}
  .rail-list a{border:1px solid var(--line);background:#fff;padding:9px 14px;font-size:13.5px;}
  .rail-list a i{display:none;}
  .rail-note{display:none;}
  .entry-card{grid-template-columns:260px 1fr;gap:20px;}
}
@media (max-width:767px){
  .category-main{padding:52px 0 64px;}
  .entry-card{grid-template-columns:1fr;padding:16px;}
  .entry-thumb{aspect-ratio:16/9;}
  .entry-body h3{font-size:17px;}
  .entry-meta .btn-text{margin-left:0;}
}

/* ---------- 三步检查（深色区块） ---------- */
.check-section{background:var(--ink);color:#F2F2EE;padding:88px 0;}
.check-section .kicker{
  font-size:12.5px;font-weight:800;letter-spacing:.14em;color:var(--lime);margin-bottom:14px;
}
.check-section h2{color:#F5F5F1;font-size:clamp(24px,3vw,36px);max-width:720px;}
.check-section .lead{margin-top:16px;max-width:680px;font-size:15px;color:rgba(242,242,238,.7);}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-top:52px;}
.step{position:relative;padding-top:26px;border-top:1px solid rgba(242,242,238,.16);}
.step-num{font-size:44px;font-weight:900;color:var(--lime);line-height:1;letter-spacing:-.03em;}
.step h3{color:#F5F5F1;font-size:19px;margin:16px 0 10px;}
.step p{font-size:14.5px;line-height:1.85;color:rgba(242,242,238,.68);}
@media (max-width:900px){
  .step-grid{grid-template-columns:1fr;gap:26px;}
  .check-section{padding:64px 0;}
}

/* ---------- FAQ ---------- */
.faq-section{padding:88px 0;}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px;}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head p{margin-top:14px;font-size:15px;color:var(--muted);}
.faq-list{max-width:760px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;gap:16px;align-items:flex-start;padding:22px 0;cursor:pointer;
  list-style:none;color:var(--ink);font-weight:600;font-size:16px;
  transition:padding-left .22s var(--ease),border-color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#3F4A00;}
.faq-num{
  font-size:13px;font-weight:900;color:var(--orange);min-width:26px;padding-top:5px;
  font-variant-numeric:tabular-nums;
}
.faq-item[open] summary{border-left:3px solid var(--lime);padding-left:14px;}
.faq-item[open] .faq-num{padding-left:2px;}
.faq-answer{padding:0 0 24px 42px;font-size:14.5px;line-height:1.9;color:var(--text);}
@media (max-width:640px){
  .faq-section{padding:60px 0;}
  .faq-answer{padding-left:42px;}
}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 96px;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:24px;
  background:var(--ink) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:60px 56px;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(17,17,20,.94) 0%,rgba(17,17,20,.76) 60%,rgba(17,17,20,.6) 100%);
}
.cta-inner > *{position:relative;z-index:2;}
.cta-inner h2{color:#F5F5F1;font-size:clamp(24px,3vw,34px);max-width:620px;}
.cta-inner p{margin-top:16px;max-width:620px;font-size:15px;color:rgba(242,242,238,.74);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-inner .btn-outline{border-color:rgba(242,242,238,.5);color:#F2F2EE;}
.cta-inner .btn-outline:hover{background:#F2F2EE;color:var(--ink);border-color:#F2F2EE;}
@media (max-width:767px){
  .cta-inner{padding:42px 24px;border-radius:18px;}
  .cta-band{padding:0 0 64px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#F2F2EE;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand strong{display:block;color:#fff;font-size:15px;font-weight:800;}
.footer-brand em{display:block;font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.02em;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(242,242,238,.64);max-width:430px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:rgba(242,242,238,.7);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .site-footer{padding:56px 0 24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --lime:#C9F73A;
  --lime-dark:#AEDC1F;
  --lime-soft:#F3FCDA;
  --ink:#111114;
  --ink-soft:#4A4A52;
  --meta:#8A8A93;
  --line:#E6E6E0;
  --paper:#F7F7F4;
  --card:#FFFFFF;
  --orange:#FF5A2B;
  --radius-card:18px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(17,17,20,.04),0 8px 24px -14px rgba(17,17,20,.14);
  --shadow-2:0 2px 6px rgba(17,17,20,.06),0 18px 44px -20px rgba(17,17,20,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-section:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.26}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:var(--space-section) 0}
.section-tight{padding:72px 0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;
  font-size:19px;font-weight:900;letter-spacing:-.04em;
  box-shadow:var(--shadow-1);
}
.brand-text strong{display:block;font-size:15.5px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--meta);letter-spacing:.14em;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:600;color:var(--ink-soft);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--lime-dark);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{background:var(--lime);color:var(--ink)}
.nav-links a.active::after{display:none}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search::before{
  content:"";position:absolute;left:13px;width:16px;height:16px;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A8A93' stroke-width='2' stroke-linecap='round'><circle cx='11' cy='11' r='7'/><path d='M20 20l-3.6-3.6'/></svg>") center/contain no-repeat;
  pointer-events:none;
}
.nav-search input{
  width:224px;height:40px;
  border:1px solid var(--line);border-radius:var(--radius-input);
  background:#fff;padding:0 14px 0 36px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:#B4B4BB}
.nav-search input:focus{outline:none;border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(201,247,58,.45)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-pill);
  border:1.5px solid transparent;font-weight:700;font-size:15px;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--lime-dark);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:rgba(17,17,20,.18);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-light{background:transparent;border-color:rgba(242,242,238,.4);color:#F2F2EE}
.btn-light:hover{background:#F2F2EE;border-color:#F2F2EE;color:var(--ink)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--ink);
  border-bottom:2px solid transparent;padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-link .arw{transition:transform .22s var(--ease)}
.btn-link:hover{border-color:var(--lime)}
.btn-link:hover .arw{transform:translateX(4px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-mask{
  position:fixed;inset:0;background:rgba(17,17,20,.4);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:90;
}
.nav-mask.open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:#fff;z-index:100;padding:24px 22px;
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:20px;overflow-y:auto;
  border-left:1px solid var(--line);
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:18px;line-height:1;display:grid;place-items:center}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-soft);background:var(--paper)}
.drawer-nav a.active{background:var(--lime);color:var(--ink)}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:4px}

/* ---------- Page hero ---------- */
.page-hero{position:relative;background:var(--ink);color:#F2F2EE;padding:64px 0 62px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  opacity:.22;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(17,17,20,.66) 0%,rgba(17,17,20,.9) 62%,rgba(17,17,20,.97) 100%);
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,242,238,.62);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:rgba(242,242,238,.78)}
.crumbs a:hover{color:var(--lime)}
.crumbs .sep{color:rgba(242,242,238,.34)}
.page-hero h1{
  font-size:clamp(32px,4.6vw,58px);
  font-weight:900;letter-spacing:-.03em;line-height:1.16;
  max-width:940px;margin-bottom:20px;
}
.page-hero h1 .hl{
  background:var(--lime);color:var(--ink);
  padding:0 10px;border-radius:10px;display:inline-block;
}
.page-hero .lede{
  max-width:760px;color:rgba(242,242,238,.78);font-size:16.5px;line-height:1.9;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(242,242,238,.24);color:rgba(242,242,238,.86);
  font-size:13px;font-weight:600;
}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--lime)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;margin-top:44px;border-top:1px solid rgba(242,242,238,.16);padding-top:26px;
}
.hero-stats li{padding:0 22px;border-left:1px solid rgba(242,242,238,.16)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats .num{
  display:block;font-size:clamp(26px,3.4vw,42px);font-weight:900;
  color:var(--lime);line-height:1.1;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
}
.hero-stats .lbl{display:block;font-size:13px;color:rgba(242,242,238,.66);margin-top:4px}

/* ---------- Section head ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:38px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.18em;color:var(--orange);
  margin-bottom:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,38px);max-width:620px}
.section-note{max-width:420px;font-size:14.5px;color:var(--ink-soft);line-height:1.8}

/* ---------- Channel layout ---------- */
.channel-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start}
.ch-list{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.ch-row{
  display:grid;grid-template-columns:48px minmax(0,1fr) 104px;
  gap:18px;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.ch-row:last-child{border-bottom:0}
.ch-row:hover{background:var(--lime-soft)}
.ch-index{
  width:40px;height:40px;border-radius:12px;
  background:var(--paper);border:1px solid var(--line);
  display:grid;place-items:center;
  font-size:14px;font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.ch-row:hover .ch-index{background:var(--lime);border-color:var(--lime)}
.ch-title{font-size:17px;font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--radius-pill);
  background:var(--lime-soft);color:#3C4A10;
  font-size:11.5px;font-weight:700;line-height:1.6;
}
.badge-outline{background:transparent;border:1px solid var(--line);color:var(--meta)}
.ch-desc{
  font-size:14px;color:var(--ink-soft);line-height:1.72;margin-top:3px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.ch-meta{font-size:12.5px;color:var(--meta);text-align:right;line-height:1.6}
.ch-meta strong{display:block;font-size:12.5px;color:var(--orange);font-weight:800;letter-spacing:.04em}

/* ---------- Sidebar ---------- */
.side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;margin-bottom:14px}
.side-list li+li{margin-top:10px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:14.5px;color:var(--ink-soft);font-weight:600;
  padding:8px 10px;border-radius:12px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-list a:hover{background:var(--lime-soft);color:var(--ink)}
.side-list .arw{color:var(--meta);font-size:13px}
.side-links a{
  display:block;padding:11px 12px;border-radius:12px;
  border:1px solid var(--line);font-size:14.5px;font-weight:600;color:var(--ink-soft);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.side-links a+a{margin-top:10px}
.side-links a:hover{border-color:var(--lime-dark);color:var(--ink);background:var(--lime-soft)}
.side-cta{
  position:relative;background:var(--ink);color:#F2F2EE;border-radius:var(--radius-card);
  padding:24px;overflow:hidden;
}
.side-cta::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/coverpic/cover-6.png") center/cover no-repeat;opacity:.2;
}
.side-cta > *{position:relative;z-index:1}
.side-cta h3{font-size:16.5px;color:#F2F2EE;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:rgba(242,242,238,.72);line-height:1.75;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- Flow ---------- */
.flow-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
.flow-steps{counter-reset:flow;display:flex;flex-direction:column;gap:0}
.flow-step{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;
  padding:22px 0;border-top:1px solid var(--line);
}
.flow-step:last-child{border-bottom:1px solid var(--line)}
.flow-num{
  width:44px;height:44px;border-radius:12px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-weight:900;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:18px;margin-bottom:6px}
.flow-step p{font-size:14.5px;color:var(--ink-soft);line-height:1.8}
.flow-figure{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  background:var(--ink);box-shadow:var(--shadow-2);
}
.flow-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.flow-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 20px;font-size:13px;color:#F2F2EE;
  background:linear-gradient(180deg,rgba(17,17,20,0),rgba(17,17,20,.85));
}

/* ---------- Pick cards ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.pick-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:grid;grid-template-columns:180px minmax(0,1fr);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(174,220,31,.7)}
.pick-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;background:var(--ink)}
.pick-body{padding:22px}
.pick-body h3{font-size:18px;margin-bottom:8px}
.pick-body p{font-size:14px;color:var(--ink-soft);line-height:1.78;margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq{max-width:800px}
.faq-item{border-bottom:1px solid var(--line);padding:24px 0}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;gap:16px;
  cursor:pointer;list-style:none;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-n{
  flex:0 0 auto;font-size:13px;font-weight:900;color:var(--orange);
  letter-spacing:.06em;padding-top:4px;font-variant-numeric:tabular-nums;
}
.faq-q{flex:1}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:4px;
  transition:transform .24s var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--ink-soft);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-ico::before{width:13px;height:2px}
.faq-ico::after{width:2px;height:13px;transition:opacity .24s var(--ease)}
.faq-item[open] .faq-ico::after{opacity:0}
.faq-item[open] .faq-ico{transform:rotate(180deg)}
.faq-a{
  font-size:15px;color:var(--ink-soft);line-height:1.85;
  padding:14px 0 0 32px;border-left:3px solid var(--lime);
  margin-top:14px;margin-left:0;
}
.faq-a{padding-left:18px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:#F2F2EE;padding:76px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-inner h2{font-size:clamp(22px,2.8vw,34px);max-width:560px;margin-bottom:12px}
.cta-inner p{font-size:15px;color:rgba(242,242,238,.74);max-width:560px;line-height:1.85}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#F2F2EE;padding:68px 0 26px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);
  gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(242,242,238,.14);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand strong{display:block;font-size:16px;font-weight:800;color:#F2F2EE}
.footer-brand em{display:block;font-style:normal;font-size:11.5px;color:rgba(242,242,238,.6);letter-spacing:.12em}
.site-footer p{font-size:14px;color:rgba(242,242,238,.7);line-height:1.85;max-width:420px}
.footer-col h4{font-size:15px;color:#F2F2EE;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(242,242,238,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:22px;font-size:13px;color:rgba(242,242,238,.55);flex-wrap:wrap;
}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .channel-layout{grid-template-columns:minmax(0,1fr) 312px;gap:32px}
}
@media (max-width:1024px){
  :root{--space-section:76px}
  .container{padding:0 24px}
  .nav-links,.nav-search,.nav-tools .btn-ghost{display:none}
  .nav-toggle{display:flex}
  .channel-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .flow-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .pick-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px}
  .site-footer p{max-width:none}
}
@media (max-width:768px){
  :root{--space-section:60px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 0}
  .hero-stats li{padding:0 18px}
  .hero-stats li:nth-child(odd){padding-left:0;border-left:0}
  .hero-stats li:nth-child(even){border-left:1px solid rgba(242,242,238,.16)}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .ch-row{grid-template-columns:44px minmax(0,1fr);padding:18px}
  .ch-meta{grid-column:2;text-align:left;display:flex;gap:12px;align-items:center}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .pick-card{grid-template-columns:minmax(0,1fr)}
  .pick-card img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand-text em{display:none}
  .page-hero{padding:48px 0 46px}
  .hero-stats .num{font-size:26px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .btn-sm{height:40px;padding:0 16px}
  .ch-title{font-size:16px}
  .faq-item summary{font-size:15.5px}
  .faq-a{font-size:14.5px;padding-left:14px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}