/* roulang page: index */
:root{
  --ink:#14181A;
  --paper:#F6F4EE;
  --paper-2:#ECE8DE;
  --card:#FFFFFF;
  --line:#D9D3C6;
  --primary:#1E4034;
  --accent:#C8F24D;
  --warm:#FF5C36;
  --muted:#5C6159;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.10);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:50;padding:0}
.nav-card{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
  backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:14px;letter-spacing:-.01em;line-height:1.3;flex-shrink:0}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(200,242,77,.3);flex-shrink:0}
.brand-sub{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14px;font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-item:hover{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.nav-item.active{background:var(--accent);color:var(--ink);border-color:transparent}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;
  border:1px solid var(--ink);flex-shrink:0;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-cta:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--card);
  margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:10px;box-shadow:var(--shadow-2);
    display:none;
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:11px 14px}
  .brand{font-size:12.5px}
}

/* ============ 通用板块 ============ */
.section{padding:72px 0;position:relative}
.section--alt{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}
.section--dark{background:var(--primary);color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark .sec-desc{color:rgba(255,255,255,.72)}
.sec-head{max-width:780px;margin-bottom:38px}
.sec-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:24px;padding:0 8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.06em;
  background:var(--ink);color:var(--accent);border-radius:6px;
  margin-bottom:14px;
}
.section--dark .sec-index{background:var(--accent);color:var(--ink)}
.sec-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;font-weight:700;letter-spacing:-.02em;
  margin-bottom:14px;
}
.sec-desc{color:var(--muted);font-size:15.5px;line-height:1.85;max-width:70ch}
@media (max-width:768px){
  .section{padding:48px 0}
  .sec-head{margin-bottom:28px}
}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2);color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.hero .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--paper-2);color:var(--primary);
}
.badge--lime{background:var(--accent);color:var(--ink)}
.badge--warm{background:rgba(255,92,54,.12);color:var(--warm)}
.badge--ghost{background:rgba(255,255,255,.14);color:#fff}

/* ============ Hero ============ */
.hero{padding-top:28px;padding-bottom:0}
.hero-panel{
  position:relative;overflow:hidden;
  border-radius:20px;
  background:var(--primary);
  color:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,24,26,.62) 0%,rgba(30,64,52,.86) 62%,rgba(20,24,26,.94) 100%);
}
.hero-inner{position:relative;z-index:2;padding:56px 32px 44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);margin-bottom:18px;
}
.eyebrow i{width:16px;height:2px;background:var(--accent);display:inline-block;border-radius:2px}
.hero h1{
  font-size:clamp(30px,4.6vw,58px);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;
  max-width:20ch;margin-bottom:20px;color:#fff;
}
.hero-lead{
  font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);
  max-width:68ch;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.progress-box{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);
  padding:20px 22px;
  max-width:640px;
  margin-bottom:26px;
  backdrop-filter:blur(4px);
}
.progress-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78);margin-bottom:12px}
.progress-head strong{font-family:var(--font-mono);font-size:15px;color:var(--accent)}
.progress-track{height:10px;border-radius:999px;background:rgba(255,255,255,.16);overflow:hidden}
.progress-track span{display:block;height:100%;border-radius:999px;background:var(--accent);transition:width .6s ease}
.progress-note{font-size:13px;color:rgba(255,255,255,.66);margin-top:10px}
.reward-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:820px}
.reward-item{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:12px;
  padding:16px 16px 14px;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.reward-item:hover{background:rgba(255,255,255,.12);border-color:rgba(200,242,77,.5);transform:translateY(-2px)}
.reward-item .rw-num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1.2}
.reward-item .rw-label{font-size:13px;color:rgba(255,255,255,.72);margin-top:4px}
@media (max-width:860px){
  .hero-inner{padding:40px 20px 34px}
  .reward-row{grid-template-columns:1fr}
  .hero h1{max-width:100%}
}

/* ============ 网格工具 ============ */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

/* ============ 卡片 ============ */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  position:relative;
}
.card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.card h3{font-size:18px;font-weight:600;line-height:1.4;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.card-num{
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  color:var(--primary);background:var(--paper-2);
  display:inline-flex;align-items:center;justify-content:center;
  min-width:30px;height:22px;border-radius:6px;margin-bottom:12px;letter-spacing:.05em;
}
.card-icon{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--paper-2);border:1px solid var(--line);
  margin-bottom:14px;color:var(--primary);
}
.card-icon svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.card-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--primary);margin-top:14px;
  border-bottom:1px solid var(--line);padding-bottom:2px;
}
.card-arrow svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease}
.card:hover .card-arrow svg{transform:translateX(3px)}

/* ============ 指标看板 ============ */
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.stat-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.stat-num{
  font-family:var(--font-mono);font-size:clamp(30px,3.4vw,42px);
  font-weight:700;line-height:1.1;letter-spacing:-.03em;color:var(--ink);
}
.stat-num em{font-style:normal;color:var(--primary);font-size:.5em;margin-left:3px}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px}
.stat-delta{
  display:inline-flex;align-items:center;gap:4px;margin-top:10px;
  font-size:12px;font-weight:600;color:var(--warm);
}

/* ============ 对比块 ============ */
.compare{display:grid;grid-template-columns:1fr 56px 1fr;gap:0;align-items:stretch}
.compare-col{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.compare-col.is-after{background:var(--primary);color:#fff;border-color:var(--primary)}
.compare-col.is-after h3{color:#fff}
.compare-col h3{font-size:17px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;line-height:1.75;padding:11px 0;border-bottom:1px dashed var(--line);
}
.compare-col.is-after .compare-list li{border-bottom-color:rgba(255,255,255,.16);color:rgba(255,255,255,.86)}
.compare-list li:last-child{border-bottom:0}
.dot{width:7px;height:7px;border-radius:50%;background:var(--warm);flex-shrink:0;margin-top:9px}
.is-after .dot{background:var(--accent)}
.compare-mid{display:flex;align-items:center;justify-content:center}
.compare-mid svg{width:24px;height:24px;stroke:var(--primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
@media (max-width:860px){
  .compare{grid-template-columns:1fr;gap:16px}
  .compare-mid{height:32px;transform:rotate(90deg)}
}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:1px;background:var(--line)}
.tl-item{position:relative;margin-bottom:18px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:20px;
  width:11px;height:11px;border-radius:50%;background:var(--accent);
  border:2px solid var(--card);box-shadow:0 0 0 1px var(--line);
}
.tl-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;transition:border-color .22s ease,transform .22s ease}
.tl-card:hover{border-color:var(--ink);transform:translateY(-2px)}
.tl-year{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--primary);letter-spacing:.06em}
.tl-card h3{font-size:16px;font-weight:600;margin:4px 0 6px}
.tl-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ 日程列表 ============ */
.schedule{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.sch-row{
  display:grid;grid-template-columns:76px 1fr auto auto;gap:16px;align-items:center;
  padding:16px 22px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.sch-row:last-child{border-bottom:0}
.sch-row:hover{background:var(--paper-2)}
.sch-date{
  font-family:var(--font-mono);font-size:13px;font-weight:700;line-height:1.3;color:var(--primary);
  border-left:3px solid var(--accent);padding-left:10px;
}
.sch-name{font-size:15px;font-weight:600}
.sch-city{font-size:13px;color:var(--muted)}
.sch-count{font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:6px;background:var(--paper-2);color:var(--primary);white-space:nowrap}
@media (max-width:720px){
  .sch-row{grid-template-columns:64px 1fr;gap:8px 12px;padding:14px 16px}
  .sch-city{grid-column:2;font-size:12.5px}
  .sch-count{grid-column:2;justify-self:start;margin-top:2px}
}

/* ============ 分类入口 ============ */
.channel-card{
  display:flex;flex-direction:column;justify-content:space-between;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;min-height:180px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.channel-card:hover{transform:translateY(-3px);border-color:var(--ink);box-shadow:var(--shadow-2);background:var(--card)}
.channel-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.channel-card p{font-size:14px;color:var(--muted);line-height:1.75}
.channel-meta{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:14px;border-top:1px solid var(--line)}
.channel-meta span{font-size:12.5px;color:var(--muted)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}

/* ============ 口碑 ============ */
.quote-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.quote-card:nth-child(2){transform:translateY(14px)}
.quote-card:nth-child(4){transform:translateY(10px)}
.quote-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.quote-card:nth-child(2):hover,.quote-card:nth-child(4):hover{transform:translateY(0)}
.quote-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--primary);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0}
.quote-name{font-size:14px;font-weight:600;line-height:1.3}
.quote-city{font-size:12px;color:var(--muted)}
.quote-text{font-size:14px;color:var(--muted);line-height:1.8}
.stars{display:flex;gap:2px;margin-top:12px;color:var(--warm)}
.stars svg{width:13px;height:13px;fill:currentColor}
@media (max-width:900px){
  .quote-card:nth-child(2),.quote-card:nth-child(4){transform:none}
}

/* ============ 资讯列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.post-thumb{display:block;aspect-ratio:16/10;background:var(--paper-2);position:relative;overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-cat{font-size:11.5px;font-weight:600;letter-spacing:.04em;color:var(--primary);background:var(--paper-2);padding:2px 8px;border-radius:6px;align-self:flex-start}
.post-title{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-excerpt{font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.post-foot svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease}
.post-card:hover .post-foot svg{transform:translateX(3px)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 20px;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);
}
.empty-state svg{width:44px;height:44px;stroke:var(--line);fill:none;stroke-width:1.4;margin:0 auto 14px}
.empty-state p{font-size:14.5px;color:var(--muted)}
@media (max-width:1024px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:680px){.post-grid{grid-template-columns:1fr}}

/* ============ 保障卡 ============ */
.guard-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.guard-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.guard-card::after{content:"";position:absolute;left:24px;right:24px;bottom:0;height:1px;background:var(--line)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line);background:var(--card);
  transition:transform .25s ease,background .25s ease,border-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:opacity .2s ease,background .2s ease;
}
.faq-icon::before{width:9px;height:1.5px}
.faq-icon::after{width:1.5px;height:9px}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--accent);border-color:var(--accent)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s cubic-bezier(.2,.7,.3,1)}
.faq-a-inner{overflow:hidden;font-size:14.5px;color:var(--muted);line-height:1.85;max-width:76ch}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-item.open .faq-a-inner{padding-bottom:20px}

/* ============ 词条卡 ============ */
.wiki-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.wiki-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.wiki-card h3{font-size:15.5px;font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.wiki-card h3::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:2px;flex-shrink:0}
.wiki-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.wiki-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}

/* ============ 表单 ============ */
.dl-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.dl-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;color:rgba(255,255,255,.86);padding:10px 0}
.dl-points svg{width:18px;height:18px;stroke:var(--accent);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;margin-top:4px}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow-2)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:10px;
  border:1px solid var(--line);background:#fff;font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,242,77,.5);
}
.field input::placeholder{color:#9AA096}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.6;margin:16px 0 20px}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--primary);flex-shrink:0}
.form-note{font-size:13px;color:var(--primary);font-weight:600;margin-top:12px;min-height:20px}
@media (max-width:900px){
  .dl-wrap{grid-template-columns:1fr;gap:28px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.site-footer h3{font-size:13px;font-weight:700;letter-spacing:.1em;color:#fff;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:800;color:#fff;margin-bottom:12px}
.footer-brand .brand-dot{box-shadow:0 0 0 3px rgba(200,242,77,.22)}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:32ch}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:13.5px;color:rgba(255,255,255,.68);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-list a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-desc{max-width:none}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .card:hover,.stat-card:hover,.channel-card:hover,.quote-card:hover,.post-card:hover,.wiki-card:hover,.guard-card:hover{transform:none}
  .btn:hover{transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#14181A;
  --paper:#F6F4EE;
  --paper-2:#ECE8DE;
  --card:#FFFFFF;
  --line:#D9D3C6;
  --primary:#1E4034;
  --accent:#C8F24D;
  --warm:#FF5C36;
  --muted:#5C6159;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.10);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:50;padding:0}
.nav-card{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
  backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:14px;letter-spacing:-.01em;line-height:1.3;flex-shrink:0}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(200,242,77,.3);flex-shrink:0}
.brand-sub{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14px;font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-item:hover{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.nav-item.active{background:var(--accent);color:var(--ink);border-color:transparent}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;
  border:1px solid var(--ink);flex-shrink:0;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-cta:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--card);
  margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:10px;box-shadow:var(--shadow-2);
    display:none;margin-left:0;
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:11px 14px}
  .brand{font-size:12.5px}
}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2);color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--paper-2);color:var(--primary);
}
.badge--lime{background:var(--accent);color:var(--ink)}
.badge--warm{background:rgba(255,92,54,.12);color:var(--warm)}
.badge--ghost{background:rgba(255,255,255,.14);color:#fff}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 11px;border-radius:6px;
  font-size:12.5px;font-weight:600;
  background:var(--paper-2);color:var(--primary);
  border:1px solid var(--line);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.tag:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}

/* ============ 文章头 ============ */
.article-hero{padding:34px 0 0}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumb a{color:var(--muted);border-bottom:1px solid transparent}
.crumb a:hover{color:var(--primary);border-color:var(--primary)}
.crumb span.sep{color:#B4AE9F}
.article-head{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-1);
  padding:34px 28px 30px;
}
@media (min-width:768px){.article-head{padding:44px 44px 36px}}
.article-head .kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.article-head h1{
  font-size:clamp(27px,3.6vw,44px);
  line-height:1.22;font-weight:800;letter-spacing:-.02em;
  max-width:25ch;margin-bottom:18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding-top:18px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.meta-row strong{color:var(--ink);font-weight:700}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--line);display:inline-block}

/* ============ 正文布局 ============ */
.article-wrap{padding:44px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
@media (min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:48px}}
.article-main{min-width:0}
.paper-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:26px;
  box-shadow:var(--shadow-1);
}
@media (min-width:768px){.paper-card{padding:34px}}
.speed-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:14px;
  padding:22px 22px 18px;
  margin-bottom:28px;
}
.speed-card .label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--primary);text-transform:uppercase;margin-bottom:12px;
}
.speed-card .label i{display:inline-block;width:14px;height:2px;background:var(--primary);border-radius:2px}
.speed-list{list-style:none;display:grid;gap:9px}
.speed-list li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75;color:#2C3A33}
.speed-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--accent);border:1px solid rgba(20,24,26,.16);
}

/* ============ 正文排版 ============ */
.article-body{max-width:70ch;font-size:16px;line-height:1.9;color:#20272A}
.article-body > * + *{margin-top:1.1em}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.4vw,26px);
  font-weight:700;line-height:1.35;letter-spacing:-.01em;
  margin-top:34px;padding-left:16px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--accent);
}
.article-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-top:26px;color:var(--ink)}
.article-body p{margin-bottom:0}
.article-body a{color:var(--primary);border-bottom:1px solid var(--line);font-weight:600}
.article-body a:hover{border-color:var(--primary);color:var(--ink)}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:22px}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:.5em;line-height:1.9}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.article-body ol li{margin-bottom:.5em;line-height:1.9}
.article-body ol{list-style:decimal}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  margin:1.4em 0;padding:16px 22px;
  background:var(--paper-2);
  border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;
  color:#2C3A33;font-size:15.5px;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:1.4em 0 .6em}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--muted);line-height:1.7}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--paper-2);font-weight:700;color:var(--ink)}
.article-body tbody tr:nth-child(even){background:#FAF8F3}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
@media (max-width:640px){
  .article-body table,.article-body thead,.article-body tbody,.article-body th,.article-body td,.article-body tr{display:block;width:100%}
  .article-body thead{display:none}
  .article-body tr{border-bottom:1px solid var(--line);padding:8px 0}
  .article-body td{border:0;padding:4px 14px}
}

/* ============ 文内目录 ============ */
.toc{display:none}
@media (min-width:1024px){
  .toc{
    display:block;position:sticky;top:110px;align-self:start;
    border-left:1px solid var(--line);padding-left:18px;
  }
}
.toc h3{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.toc-list{list-style:none;display:grid;gap:2px;max-height:60vh;overflow:auto}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--muted);
  padding:6px 10px;border-left:2px solid transparent;border-radius:0 6px 6px 0;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-list a:hover{color:var(--ink);background:var(--paper-2)}
.toc-list a.current{color:var(--primary);font-weight:700;border-left-color:var(--primary);background:rgba(200,242,77,.18)}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7}

/* ============ 提示条 ============ */
.notice-bar{
  display:flex;gap:14px;align-items:flex-start;
  background:#FFFDF6;border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;margin:26px 0;
}
.notice-bar .ic{
  flex-shrink:0;width:34px;height:34px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent);color:var(--ink);
}
.notice-bar strong{display:block;font-size:14.5px;font-weight:700;margin-bottom:2px}
.notice-bar p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ 作者卡 ============ */
.author-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;margin-top:30px;
}
.avatar{
  flex-shrink:0;width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:var(--accent);
  font-weight:800;font-size:16px;letter-spacing:.02em;
}
.author-card .name{font-size:15px;font-weight:700;margin-bottom:2px}
.author-card .desc{font-size:13.5px;color:var(--muted);line-height:1.7}
.author-card .time{font-size:12.5px;color:var(--muted);margin-top:6px;font-family:var(--font-mono)}

/* ============ 标签区 ============ */
.tag-section{padding:0 0 8px}
.tag-head{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}

/* ============ 相关推荐 ============ */
.related{padding:56px 0;background:var(--paper-2);border-top:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.sec-title{font-size:clamp(21px,2.6vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.sec-title em{font-style:normal;color:var(--primary)}
.sec-sub{font-size:14px;color:var(--muted)}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:700px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.post-thumb{position:relative;aspect-ratio:16/10;background:var(--paper-2);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.post-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-title{font-size:16.5px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-desc{font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);font-family:var(--font-mono)}
.post-foot .arrow{transition:transform .2s ease;color:var(--primary)}
.post-card:hover .post-foot .arrow{transform:translateX(3px)}
.empty-note{
  grid-column:1/-1;text-align:center;padding:36px 20px;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);
  color:var(--muted);font-size:14px;
}

/* ============ 上下篇 ============ */
.pager{padding:44px 0}
.pager-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.pager-grid{grid-template-columns:1fr 1fr}}
.pager-link{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px 22px;transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.pager-link:hover{transform:translateY(-2px);border-color:var(--ink);background:#FFFDF6}
.pager-link .arrow{font-family:var(--font-mono);font-size:18px;color:var(--primary);flex-shrink:0}
.pager-link .txt{font-size:14.5px;font-weight:700;line-height:1.5}
.pager-link .hint{display:block;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.08em;margin-bottom:2px}
.pager-link.next{justify-content:flex-end;text-align:right}

/* ============ 返回入口 ============ */
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;padding:0 0 56px}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-color:var(--primary);color:var(--primary)}
.text-link:hover .arrow{transform:translateX(3px)}
.text-link .arrow{transition:transform .2s ease}
#toTop{
  position:fixed;right:20px;bottom:24px;z-index:40;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;border:1px solid var(--ink);
  box-shadow:var(--shadow-2);opacity:0;pointer-events:none;
  transition:opacity .25s ease,background .2s ease,color .2s ease,transform .2s ease;
}
#toTop.show{opacity:1;pointer-events:auto}
#toTop:hover{background:var(--accent);color:var(--ink);transform:translateY(-2px)}

/* ============ 底部转化条 ============ */
.cta-band{background:var(--primary);color:#fff;padding:52px 0}
.cta-band .inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:800;line-height:1.3;letter-spacing:-.01em;color:#fff;margin-bottom:8px}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.76);line-height:1.8;max-width:62ch}
.cta-band .btn-accent:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--card);border:1px dashed var(--line);border-radius:18px;
}
.empty-state .glyph{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper-2);color:var(--primary);
}
.empty-state h2{font-size:22px;font-weight:800;margin-bottom:8px}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:20px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.74);padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:700px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:800;color:#fff;margin-bottom:12px;line-height:1.4}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34ch}
.site-footer h3{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:14px}
.footer-list{list-style:none;display:grid;gap:9px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.76);border-bottom:1px solid transparent;padding-bottom:1px}
.footer-list a:hover{color:var(--accent);border-color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom span{line-height:1.7}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#14181A;
  --paper:#F6F4EE;
  --paper-2:#ECE8DE;
  --card:#FFFFFF;
  --line:#D9D3C6;
  --primary:#1E4034;
  --accent:#C8F24D;
  --warm:#FF5C36;
  --muted:#5C6159;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.10);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1200px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:50;padding:0}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
  backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:13px;letter-spacing:-.01em;line-height:1.3;flex-shrink:0}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(200,242,77,.3);flex-shrink:0}
.brand-sub{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14px;font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-item:hover{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.nav-item.active{background:var(--accent);color:var(--ink);border-color:transparent}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;
  border:1px solid var(--ink);flex-shrink:0;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.nav-cta:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--card);
  margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media(max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:10px;box-shadow:var(--shadow-2);
    display:none;margin-left:0;
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:11px 14px}
  .brand{font-size:12.5px}
}

/* ============ 通用板块 ============ */
.section{padding:72px 0;position:relative}
.section--alt{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}
.section--dark{background:var(--primary);color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
@media(max-width:767px){.section{padding:46px 0}}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.sec-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.sec-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:26px;height:22px;padding:0 7px;border-radius:6px;
  background:var(--paper-2);color:var(--primary);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:0;
}
.sec-title{font-size:clamp(22px,2.4vw,32px);line-height:1.28;font-weight:700;letter-spacing:-.01em}
.sec-desc{color:var(--muted);font-size:15px;max-width:70ch;margin-top:10px}
@media(max-width:767px){.sec-title{font-size:22px}}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2);color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--paper-2);color:var(--primary);
}
.badge--lime{background:var(--accent);color:var(--ink)}
.badge--warm{background:rgba(255,92,54,.12);color:var(--warm)}
.badge--ghost{background:rgba(255,255,255,.14);color:#fff}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ============ 分类页头部 ============ */
.page-head{padding:32px 0 54px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumb a{border-bottom:1px solid transparent;padding-bottom:1px}
.crumb a:hover{border-color:var(--primary)}
.crumb span{color:var(--line)}
.page-head-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start}
.page-h1{
  font-size:clamp(28px,3.6vw,46px);line-height:1.14;font-weight:800;letter-spacing:-.02em;
  max-width:22ch;margin-bottom:18px;
}
.page-lead{color:var(--muted);font-size:16px;max-width:66ch}
.page-lead + .page-lead{margin-top:12px}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.stat-strip{
  border:1px solid var(--line);background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow-1);padding:6px 18px;
}
.stat-strip dl{margin:0}
.stat-strip .stat{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.stat-strip .stat:last-child{border-bottom:0}
.stat-strip dt{font-size:13px;color:var(--muted);font-weight:600}
.stat-strip dd{margin:0;font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--primary);letter-spacing:-.02em}
@media(max-width:1023px){.page-head-grid{grid-template-columns:1fr}}
@media(max-width:767px){
  .page-head{padding:22px 0 36px}
  .page-h1{font-size:26px}
  .page-lead{font-size:15px}
}

/* ============ 筛选标签条 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  padding:12px;border:1px solid var(--line);background:var(--card);
  border-radius:12px;margin-bottom:6px;
}
.filter-bar .filter-cap{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);padding:0 8px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper);color:var(--muted);
  font-size:13px;font-weight:600;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--paper-2);color:var(--ink)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff}

/* ============ 词条行列表 ============ */
.entry-list{border-top:1px solid var(--line);margin-top:20px}
.entry-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) 168px 24px;
  gap:20px;align-items:start;
  padding:22px 10px;border-bottom:1px solid var(--line);
  transition:background .2s ease,transform .2s ease;
}
.entry-row:hover{background:var(--paper-2)}
.entry-row:hover .entry-arrow{transform:translateX(3px);color:var(--primary)}
.entry-num{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.04em;padding-top:3px}
.entry-title{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:6px}
.entry-text{font-size:14.5px;color:var(--muted);line-height:1.8;max-width:62ch}
.entry-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.entry-meta{display:flex;flex-direction:column;gap:6px;padding-top:2px}
.entry-meta em{font-style:normal;font-size:12.5px;color:var(--muted)}
.entry-arrow{color:var(--line);transition:transform .22s ease,color .22s ease;padding-top:6px}
@media(max-width:900px){
  .entry-row{grid-template-columns:40px minmax(0,1fr) 20px;gap:14px}
  .entry-meta{grid-column:2;flex-direction:row;flex-wrap:wrap;gap:8px;padding-top:0}
  .entry-arrow{grid-row:1;grid-column:3}
}
@media(max-width:560px){
  .entry-row{grid-template-columns:32px minmax(0,1fr);padding:18px 6px}
  .entry-arrow{display:none}
  .entry-title{font-size:16.5px}
}

/* ============ 迷你属性表 ============ */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);overflow:hidden;box-shadow:var(--shadow-1)}
.mini-table{width:100%;border-collapse:collapse;font-size:14.5px}
.mini-table thead th{
  background:var(--paper-2);color:var(--primary);text-align:left;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  padding:14px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.mini-table td{padding:15px 20px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top}
.mini-table td:first-child{color:var(--ink);font-weight:700}
.mini-table tbody tr:nth-child(even){background:#FBFAF6}
.mini-table tbody tr:last-child td{border-bottom:0}
.mini-table tbody tr:hover{background:var(--paper-2)}
@media(max-width:640px){
  .mini-table thead{display:none}
  .mini-table,.mini-table tbody,.mini-table tr,.mini-table td{display:block;width:100%}
  .table-wrap{border:0;background:transparent;box-shadow:none}
  .mini-table tr{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:12px;padding:6px 16px}
  .mini-table td{border:0;padding:8px 0}
  .mini-table td::before{content:attr(data-label);display:block;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:2px}
}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.scene-figure{aspect-ratio:16/10;background:var(--paper-2);overflow:hidden}
.scene-figure img{width:100%;height:100%;object-fit:cover}
.scene-body{padding:18px 18px 22px}
.scene-body h3{font-size:17px;font-weight:700;line-height:1.45}
.scene-body p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75}
@media(max-width:1023px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.scene-grid{grid-template-columns:1fr}}

/* ============ 步骤卡 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.step-card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  padding:26px 24px 28px;position:relative;overflow:hidden;
  transition:transform .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-2px);border-color:var(--ink)}
.step-num{font-family:var(--font-mono);font-size:44px;line-height:1;font-weight:700;color:var(--paper-2);letter-spacing:-.04em}
.step-card h3{font-size:17.5px;font-weight:700;margin-top:12px}
.step-card p{font-size:14.5px;color:var(--muted);margin-top:8px;line-height:1.8}
.step-card::after{content:"";position:absolute;top:0;left:0;width:38px;height:3px;background:var(--accent)}
@media(max-width:900px){.step-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:opacity .2s ease,background .2s ease;
}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item.open .faq-icon{background:var(--accent);border-color:var(--accent);transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--muted);line-height:1.85;max-width:70ch}

/* ============ 分类入口 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cat-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:22px;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  padding:26px 24px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.cat-card h3{font-size:19px;font-weight:700;line-height:1.4}
.cat-card p{font-size:14.5px;color:var(--muted);margin-top:10px;line-height:1.8}
.cat-card .cat-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:16px;border-top:1px solid var(--line)}
.cat-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;border-bottom:1px solid var(--line);padding-bottom:2px}
.cat-link:hover{border-color:var(--primary)}
.cat-link svg{transition:transform .22s ease}
.cat-link:hover svg{transform:translateX(3px)}
@media(max-width:767px){.cat-grid{grid-template-columns:1fr}}

/* ============ 底部转化条 ============ */
.cta-band{background:var(--primary);color:#fff;border-radius:18px;padding:38px 32px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.2vw,27px);font-weight:700;line-height:1.35;letter-spacing:-.01em;color:#fff}
.cta-band p{color:rgba(255,255,255,.72);font-size:14.5px;margin-top:10px;max-width:56ch}
.cta-band .btn-primary{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.cta-band .btn-primary:hover{background:#fff;color:var(--ink);border-color:#fff}
@media(max-width:767px){.cta-band{padding:28px 22px}}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#EDEAE2;margin-top:72px;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:15px;line-height:1.4;color:#fff}
.footer-desc{color:rgba(237,234,226,.66);font-size:14px;line-height:1.85;margin-top:14px;max-width:38ch}
.site-footer h3{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin:0 0 14px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(237,234,226,.72);font-size:14px;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-list a:hover{color:var(--accent);border-color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;justify-content:space-between;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(237,234,226,.16);
  font-size:12.5px;color:rgba(237,234,226,.55);
}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:40px 0 22px;margin-top:48px}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14181A;
  --paper:#F6F4EE;
  --paper-2:#ECE8DE;
  --card:#FFFFFF;
  --line:#D9D3C6;
  --primary:#1E4034;
  --accent:#C8F24D;
  --warm:#FF5C36;
  --muted:#5C6159;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.10);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1200px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:50;padding:0}
.nav-card{
  position:relative;display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,.97);border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow-2);
  padding:10px 14px;backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:13px;letter-spacing:-.01em;line-height:1.3;flex-shrink:0;max-width:44vw}
.brand:hover{color:var(--ink)}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(200,242,77,.3);flex-shrink:0}
.brand-sub{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;padding:8px 13px;border-radius:10px;
  font-size:14px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.nav-item:hover{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.nav-item.active{background:var(--accent);color:var(--ink);border-color:transparent}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;
  border-radius:999px;background:var(--ink);color:#fff;font-size:13.5px;font-weight:700;
  border:1px solid var(--ink);flex-shrink:0;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.nav-cta:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:10px;border:1px solid var(--line);background:var(--card);margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-card.open .nav-toggle span{background:transparent}
.nav-card.open .nav-toggle span::before{transform:translateY(5px) rotate(45deg)}
.nav-card.open .nav-toggle span::after{transform:translateY(-5px) rotate(-45deg)}
@media(max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-cta{padding:0 14px;font-size:13px;height:38px}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:10px;box-shadow:var(--shadow-2);display:none;
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:11px 14px;background:var(--paper);border-color:var(--line)}
  .nav-item.active{background:var(--accent);border-color:var(--accent)}
}
@media(max-width:520px){
  .brand{font-size:11.5px;max-width:40vw}
  .brand-sub{font-size:9px;letter-spacing:.1em}
  .nav-cta{padding:0 12px;font-size:12.5px;height:36px}
}

/* ============ 通用板块 ============ */
.section{padding:56px 0;position:relative}
@media(min-width:768px){.section{padding:72px 0}}
.section--alt{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}
.section--dark{background:var(--primary);color:#fff}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head--row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;max-width:none}
.sec-index{
  display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:24px;
  padding:0 8px;border-radius:6px;background:var(--primary);color:#fff;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.04em;margin-right:10px;
}
.sec-kicker{font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.section--dark .sec-kicker{color:rgba(255,255,255,.6)}
.sec-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.015em;display:flex;align-items:center;flex-wrap:wrap}
.sec-desc{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;max-width:70ch}
.section--dark .sec-desc{color:rgba(255,255,255,.74)}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2);color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.03em;
  background:var(--paper-2);color:var(--primary);border:1px solid transparent;
}
.badge--lime{background:var(--accent);color:var(--ink)}
.badge--warm{background:rgba(255,92,54,.12);color:var(--warm)}
.badge--outline{background:transparent;border-color:var(--line);color:var(--muted)}
.badge--ghost{background:rgba(255,255,255,.14);color:#fff}

/* ============ 分类页头部 ============ */
.cat-head{padding:32px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:1px}
.crumbs a:hover{color:var(--primary);border-color:var(--primary)}
.crumbs span.sep{color:var(--line)}
.crumbs .current{color:var(--ink);font-weight:600}
.cat-head-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media(min-width:1024px){.cat-head-grid{grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);gap:40px}}
.cat-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);margin-bottom:14px}
.cat-eyebrow i{display:inline-block;width:18px;height:2px;background:var(--accent);border-radius:2px}
.cat-head h1{
  font-size:clamp(28px,4.2vw,50px);line-height:1.14;font-weight:800;letter-spacing:-.02em;
  margin-bottom:16px;max-width:22ch;
}
.cat-head h1 em{font-style:normal;background:linear-gradient(transparent 62%,rgba(200,242,77,.85) 62%,rgba(200,242,77,.85) 92%,transparent 92%)}
.cat-lead{font-size:15.5px;line-height:1.95;color:var(--muted);max-width:66ch}
.cat-lead + .cat-lead{margin-top:10px}
.city-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.city-tags .badge{font-size:12.5px;padding:5px 11px;background:var(--card);border-color:var(--line);color:var(--ink);transition:background .2s ease,border-color .2s ease}
.city-tags .badge:hover{background:var(--paper-2);border-color:var(--ink)}
.cat-side{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-1);
}
.cat-side h2{font-size:15px;font-weight:800;letter-spacing:-.01em;margin-bottom:14px}
.side-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-top:1px solid var(--line);font-size:14px;
}
.side-list li:first-child{border-top:none;padding-top:0}
.side-list .val{font-family:var(--font-mono);font-weight:700;font-size:15px;color:var(--primary)}
.side-note{margin-top:16px;font-size:12.5px;color:var(--muted);line-height:1.8;border-top:1px dashed var(--line);padding-top:14px}

/* ============ 城市频道网格 ============ */
.city-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.city-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.city-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.city-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.city-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.city-thumb{position:relative;aspect-ratio:16/9;background:var(--paper-2);overflow:hidden}
.city-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.city-card:hover .city-thumb img{transform:scale(1.04)}
.city-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(20,24,26,.82);color:#fff;backdrop-filter:blur(4px)}
.city-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.city-name{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.city-name h3{font-size:19px;font-weight:800;letter-spacing:-.01em}
.city-name .tagline{font-size:12px;color:var(--muted)}
.city-stats{display:flex;gap:18px;border-top:1px solid var(--line);padding-top:12px}
.city-stats div{display:flex;flex-direction:column;gap:2px}
.city-stats .num{font-family:var(--font-mono);font-size:17px;font-weight:700;color:var(--primary);letter-spacing:-.02em}
.city-stats .lbl{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.city-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;align-self:flex-start;
}
.city-more svg{transition:transform .22s ease}
.city-more:hover{color:var(--primary);border-color:var(--primary)}
.city-more:hover svg{transform:translateX(3px)}

/* ============ 场景分组列表 ============ */
.scene-list{border-top:1px solid var(--line)}
.scene-row{
  display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;
  padding:20px 14px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
@media(min-width:768px){.scene-row{grid-template-columns:56px minmax(0,1.1fr) minmax(0,1.4fr) auto;gap:20px;align-items:center;padding:22px 18px}}
.scene-row:hover{background:var(--card)}
.scene-num{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--muted);padding-top:2px}
.scene-name{font-size:17px;font-weight:700;letter-spacing:-.01em}
.scene-desc{font-size:14px;color:var(--muted);line-height:1.85;margin-top:4px}
@media(min-width:768px){.scene-desc{margin-top:0}}
.scene-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
@media(min-width:768px){.scene-tags{margin-top:0;justify-content:flex-end;max-width:220px}}

/* ============ 破冰词条 ============ */
.topic-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.topic-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-1);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease;
}
.topic-card:hover{transform:translateY(-2px);border-color:var(--ink)}
.topic-card .idx{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.06em}
.topic-card h3{font-size:16.5px;font-weight:800;margin:8px 0 6px;letter-spacing:-.01em}
.topic-card p{font-size:14px;color:var(--muted);line-height:1.85}

/* ============ 数据看板 ============ */
.board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media(min-width:900px){.board{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}}
.board-cell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 18px;box-shadow:var(--shadow-1);
}
.board-cell .num{
  font-family:var(--font-mono);font-size:clamp(26px,3.4vw,36px);font-weight:700;
  letter-spacing:-.03em;color:var(--primary);line-height:1.1;
}
.board-cell .num i{font-style:normal;font-size:.5em;margin-left:2px;color:var(--muted)}
.board-cell .lbl{font-size:13px;color:var(--muted);margin-top:6px}
.board-cell .delta{display:inline-flex;margin-top:8px;font-size:12px;font-weight:700;color:var(--warm)}

/* ============ 安全说明 ============ */
.safety-wrap{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.safety-wrap{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:40px;align-items:start}}
.safety-list{display:grid;gap:14px}
.safety-item{
  display:flex;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:18px;
}
.safety-item .ic{
  width:36px;height:36px;border-radius:10px;background:var(--accent);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.safety-item h3{font-size:16px;font-weight:800;margin-bottom:4px}
.safety-item p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.76)}
.safety-aside{
  border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);padding:22px;
  background:rgba(20,24,26,.28);
}
.safety-aside h3{font-size:16px;font-weight:800;margin-bottom:10px}
.safety-aside p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.76)}
.safety-aside .rule{display:flex;gap:10px;padding:10px 0;border-top:1px dashed rgba(255,255,255,.2);font-size:13.5px;color:rgba(255,255,255,.82)}
.safety-aside .rule:first-of-type{margin-top:6px}
.safety-aside .rule b{color:var(--accent);font-weight:700}

/* ============ 相关分类入口 ============ */
.rel-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.rel-card{
  display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-1);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.rel-card .kicker{font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}
.rel-card h3{font-size:20px;font-weight:800;letter-spacing:-.015em}
.rel-card p{font-size:14px;color:var(--muted);line-height:1.85}
.rel-card .go{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;margin-top:4px}
.rel-card .go svg{transition:transform .22s ease}
.rel-card:hover .go svg{transform:translateX(3px)}

/* ============ 底部转化条 ============ */
.cta-bar{
  background:var(--primary);border-radius:20px;padding:32px 24px;color:#fff;
  display:flex;flex-direction:column;gap:20px;align-items:flex-start;
  border:1px solid rgba(255,255,255,.14);
}
@media(min-width:900px){.cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 36px}}
.cta-bar h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;line-height:1.35;letter-spacing:-.015em;max-width:24ch}
.cta-bar p{font-size:14px;color:rgba(255,255,255,.74);margin-top:8px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:56px;padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:800;color:#fff;margin-bottom:12px;line-height:1.4}
.footer-desc{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:38ch}
.site-footer h3{font-size:13px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:14px}
.footer-list li{padding:6px 0;font-size:13.5px}
.footer-list a{color:rgba(255,255,255,.66);border-bottom:1px solid transparent;padding-bottom:1px}
.footer-list a:hover{color:var(--accent);border-color:var(--accent)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:8px 24px;font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#14181A;
  --paper:#F6F4EE;
  --paper-2:#ECE8DE;
  --card:#FFFFFF;
  --line:#D9D3C6;
  --primary:#1E4034;
  --accent:#C8F24D;
  --warm:#FF5C36;
  --muted:#5C6159;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.10);
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--accent);color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:50;padding:0}
.nav-card{
  position:relative;display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-2);padding:10px 14px;
  backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:14px;letter-spacing:-.01em;line-height:1.3;flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(200,242,77,.3);flex-shrink:0;display:inline-block}
.brand-sub{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:10px;
  font-size:14px;font-weight:600;border:1px solid transparent;
  white-space:nowrap;transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.nav-item:hover{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.nav-item.active{background:var(--accent);color:var(--ink);border-color:transparent}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;
  border:1px solid var(--ink);flex-shrink:0;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.nav-cta:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--card);
  margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media (max-width:920px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    display:none;position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:10px;box-shadow:var(--shadow-2);
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:11px 14px}
  .brand{font-size:12.5px}
}

/* ============ 通用板块 ============ */
.section{padding:64px 0;position:relative}
@media (min-width:900px){.section{padding:76px 0}}
.section--alt{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}
.section--dark{background:var(--primary);color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:34px;max-width:780px}
.sec-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:22px;padding:0 8px;border-radius:6px;
  background:var(--accent);color:var(--ink);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.sec-kicker{display:flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.sec-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.015em}
.sec-desc{color:var(--muted);font-size:15.5px;max-width:70ch}
.section--dark .sec-desc{color:rgba(255,255,255,.72)}
.section--dark .sec-kicker{color:rgba(255,255,255,.6)}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2);color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--paper-2);color:var(--primary);
}
.badge--lime{background:var(--accent);color:var(--ink)}
.badge--warm{background:rgba(255,92,54,.12);color:var(--warm)}
.badge--ghost{background:rgba(255,255,255,.14);color:#fff}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ============ 分类页头 ============ */
.page-head{padding:26px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted);border-bottom:1px solid transparent}
.crumb a:hover{color:var(--primary);border-bottom-color:var(--line)}
.crumb .sep{color:var(--line)}
.crumb .now{color:var(--ink);font-weight:600}
.head-card{
  display:grid;grid-template-columns:1fr;gap:26px;
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-1);padding:28px 22px;overflow:hidden;
}
@media (min-width:960px){
  .head-card{grid-template-columns:1.15fr .85fr;gap:40px;padding:40px 38px;align-items:center}
}
.head-kicker{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.head-kicker i{display:inline-block;width:16px;height:2px;background:var(--primary);border-radius:2px}
.page-head h1{
  font-size:clamp(28px,3.9vw,48px);line-height:1.16;font-weight:800;
  letter-spacing:-.02em;margin-bottom:16px;max-width:22ch;
}
.page-head h1 em{font-style:normal;background:linear-gradient(transparent 64%,var(--accent) 64%);padding:0 2px}
.head-lead{color:var(--muted);font-size:15.5px;line-height:1.9;max-width:62ch;margin-bottom:22px}
.head-stats{display:flex;flex-wrap:wrap;gap:10px}
.stat-chip{
  display:inline-flex;flex-direction:column;gap:2px;
  padding:10px 14px;border:1px solid var(--line);border-radius:10px;
  background:var(--paper);min-width:104px;
}
.stat-chip b{font-family:var(--font-mono);font-size:19px;line-height:1.2;letter-spacing:-.02em}
.stat-chip span{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.head-media{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--paper-2)}
.head-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.head-media figcaption{
  position:absolute;left:10px;bottom:10px;
  background:rgba(20,24,26,.82);color:#fff;
  font-size:11.5px;padding:4px 9px;border-radius:6px;letter-spacing:.03em;
}

/* ============ 指南布局 + 目录 ============ */
.guide-shell{display:grid;grid-template-columns:1fr;gap:30px;align-items:start}
@media (min-width:1024px){.guide-shell{grid-template-columns:minmax(0,1fr) 258px;gap:44px}}
.guide-toc{
  order:-1;border:1px solid var(--line);border-radius:14px;background:var(--card);
  padding:14px;
}
@media (min-width:1024px){.guide-toc{order:0;position:sticky;top:104px;padding:18px}}
.toc-title{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);margin-bottom:10px;text-transform:uppercase}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
@media (min-width:1024px){.toc-list{flex-direction:column;overflow:visible;gap:2px;padding-bottom:0}}
.toc-list a{
  display:block;white-space:nowrap;font-size:13.5px;font-weight:600;
  padding:8px 11px;border-radius:8px;border-left:2px solid transparent;color:var(--muted);
}
@media (min-width:1024px){.toc-list a{white-space:normal}}
.toc-list a:hover{background:var(--paper-2);color:var(--ink)}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);line-height:1.75}
.toc-note b{display:block;color:var(--ink);font-size:13px;margin-bottom:4px}

/* ============ 步骤时间线 ============ */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line)}
.step{position:relative;padding:0 0 18px 0}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-25px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--accent);border:2px solid var(--card);box-shadow:0 0 0 1px var(--line);
}
.step-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.step-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.step-no{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.08em}
.step-card h3{font-size:17px;font-weight:700;margin:2px 0 6px}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ 攻略条目列表 ============ */
.group-band{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:10px;
  padding:9px 14px;margin:26px 0 6px;
}
.group-band:first-of-type{margin-top:0}
.group-band h3{font-size:14px;font-weight:700;letter-spacing:.02em}
.group-band span{font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.entry-list{border-top:1px solid var(--line)}
.entry{
  display:grid;grid-template-columns:34px 1fr;gap:12px;
  padding:16px 10px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.entry:hover{background:var(--paper-2)}
.entry-no{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--muted);padding-top:2px}
.entry-body h4{font-size:16px;font-weight:700;line-height:1.5;margin-bottom:4px}
.entry-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.entry-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}
.entry-tag{font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:6px;background:var(--card);border:1px solid var(--line);color:var(--muted)}
@media (min-width:760px){
  .entry{grid-template-columns:44px 1fr 22px;align-items:start;padding:18px 12px}
  .entry-arrow{align-self:center;color:var(--muted);transition:transform .2s ease,color .2s ease}
  .entry:hover .entry-arrow{transform:translateX(3px);color:var(--ink)}
}

/* ============ 速查数据卡 ============ */
.spec-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:640px){.spec-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.spec-grid{grid-template-columns:repeat(4,1fr);gap:18px}}
.spec-card{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease;
}
.spec-card:hover{border-color:var(--ink);transform:translateY(-2px)}
.spec-num{font-family:var(--font-mono);font-size:26px;font-weight:700;line-height:1.2;letter-spacing:-.02em;color:var(--primary)}
.spec-card small{display:block;font-size:12px;color:var(--muted);margin-top:2px;letter-spacing:.03em}
.spec-card p{font-size:13.5px;color:var(--muted);line-height:1.75;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}

/* ============ 误区对照 ============ */
.compare{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:820px){.compare{grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--card)}}
.compare-col{padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
@media (min-width:820px){.compare-col{border:0;border-radius:0}}
.compare-col--warn{background:rgba(255,92,54,.05)}
@media (min-width:820px){.compare-col--warn{border-right:1px solid var(--line)}}
.compare-col h3{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;letter-spacing:.03em;margin-bottom:12px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot--warn{background:var(--warm)}
.dot--ok{background:var(--primary)}
.compare-row{padding:11px 0;border-top:1px solid var(--line);font-size:14.5px;line-height:1.8;color:var(--muted)}
.compare-row:first-of-type{border-top:0;padding-top:0}
.compare-row b{color:var(--ink);font-weight:700}

/* ============ 名词表 ============ */
.glossary{border-top:1px solid var(--line)}
.gloss{display:grid;grid-template-columns:1fr;gap:4px;padding:15px 4px;border-bottom:1px solid var(--line)}
@media (min-width:768px){.gloss{grid-template-columns:180px 1fr;gap:20px;align-items:baseline}}
.gloss dt{font-size:15.5px;font-weight:700}
.gloss dd{margin:0;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 4px;font-size:15.5px;font-weight:600;cursor:pointer;list-style:none;
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--primary)}
.faq .sign{
  position:relative;flex-shrink:0;width:20px;height:20px;border:1px solid var(--line);border-radius:6px;
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq .sign::before,.faq .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%);
}
.faq .sign::before{width:9px;height:1.5px}
.faq .sign::after{width:1.5px;height:9px;transition:transform .2s ease}
.faq details[open] .sign{background:var(--accent);border-color:var(--accent);transform:rotate(180deg)}
.faq details[open] .sign::after{transform:translate(-50%,-50%) scaleY(0)}
.faq .answer{padding:0 4px 18px;color:var(--muted);font-size:14.8px;line-height:1.9;max-width:70ch}

/* ============ 分类入口 ============ */
.cat-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:760px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
.cat-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:22px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.cat-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.cat-card .cat-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.cat-card h3{font-size:18px;font-weight:700}
.cat-card p{font-size:14.5px;color:var(--muted);line-height:1.85}
.cat-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:6px;
  font-size:13.5px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;align-self:flex-start;
}
.cat-more:hover{border-bottom-color:var(--ink)}
.cat-more svg{transition:transform .2s ease}
.cat-card:hover .cat-more svg{transform:translateX(3px)}
.back-home{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:2px}
.back-home:hover{color:var(--ink);border-bottom-color:var(--ink)}

/* ============ 底部转化 ============ */
.cta-band{background:var(--primary);color:#fff;border-radius:20px;padding:32px 24px;position:relative;overflow:hidden}
@media (min-width:900px){.cta-band{padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px}}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-bottom:10px;max-width:26ch}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.75);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
@media (min-width:900px){.cta-actions{margin-top:0;flex-shrink:0}}
.cta-band .btn-accent:hover{background:#fff;color:var(--ink);border-color:#fff}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 26px;margin-top:72px}
.site-footer h3{color:#fff;font-size:13px;font-weight:700;letter-spacing:.1em;margin-bottom:14px;text-transform:uppercase}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:15px;line-height:1.4;margin-bottom:12px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:38ch}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:13.5px}
.footer-list a{color:rgba(255,255,255,.7);border-bottom:1px solid transparent;padding-bottom:1px;align-self:flex-start}
.footer-list a:hover{color:var(--accent);border-bottom-color:rgba(200,242,77,.5)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:space-between;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}