/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --brand:#E1543A;
  --brand-dark:#C0412A;
  --brand-soft:rgba(225,84,58,.10);
  --brand-line:rgba(225,84,58,.30);
  --ink:#0F2F28;
  --cyan:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --text:#14161A;
  --muted:#5B6068;
  --disabled:#9AA0A6;
  --mono:ui-monospace,"IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:999px;
  --r-block:20px;
  --sh-1:0 1px 2px rgba(20,22,26,.06),0 12px 32px -12px rgba(20,22,26,.18);
  --sh-2:0 2px 4px rgba(20,22,26,.08),0 22px 46px -16px rgba(20,22,26,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --bs-primary:#E1543A;
  --bs-primary-rgb:225,84,58;
  --bs-body-bg:#F6F3EE;
  --bs-body-color:#14161A;
  --bs-border-color:#E6E0D6;
  --bs-link-color:#C0412A;
  --bs-link-hover-color:#E1543A;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-border-radius:14px;
}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:80px;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand-dark);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--text)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.mono{font-family:var(--mono);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:104px 0}
.section-sm{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  display:block;
  margin-bottom:12px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:800}
.section-desc{margin-top:12px;color:var(--muted);font-size:16px;max-width:640px}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand-line);background:#fff}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}
.btn-cyan{background:var(--cyan);color:#06302a}
.btn-cyan:hover{background:#25ab97;color:#04211d;transform:translateY(-2px)}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-dark)}
.link-more i{font-size:11px;transition:transform .22s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ================= 头部导航 ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:80px;display:flex;align-items:center;
  background:rgba(246,243,238,.92);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.compact{height:60px;background:rgba(255,255,255,.95);box-shadow:0 4px 18px -12px rgba(20,22,26,.45)}
.hd-inner{display:flex;align-items:center;gap:28px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.brand-mark i{color:var(--cyan)}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:0;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav .nav-link{
  display:inline-block;padding:9px 13px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.main-nav .nav-link.active{color:var(--ink);font-weight:700;background:rgba(15,47,40,.07)}
.hd-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;color:var(--muted);white-space:nowrap;
}
.status-badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.82)}}
.countdown{font-family:var(--mono);font-size:14px;color:var(--ink);letter-spacing:.06em}
.countdown .colon{animation:blink 1s steps(1) infinite}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:.25}}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:17px;
}
.drawer{
  position:fixed;inset:0;z-index:1050;background:var(--ink);color:#fff;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.22);background:transparent;color:#fff;font-size:17px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto}
.drawer-nav a{
  color:rgba(255,255,255,.86);font-size:19px;font-weight:600;
  padding:15px 6px;border-bottom:1px solid rgba(255,255,255,.1);
}
.drawer-nav a.active,.drawer-nav a:hover{color:var(--cyan)}
.drawer-cta{margin-top:20px}
.drawer-cta .btn{width:100%;height:48px}

/* ================= Hero ================= */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.3;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(15,47,40,.96) 0%,rgba(15,47,40,.86) 42%,rgba(15,47,40,.58) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
  min-height:660px;padding-top:64px;padding-bottom:64px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  color:var(--cyan);margin-bottom:20px;
}
.hero-eyebrow .tag-line{width:26px;height:1px;background:var(--cyan);display:inline-block}
.hero-title{
  font-size:clamp(2rem,5vw,4.25rem);
  line-height:1.15;letter-spacing:-.02em;font-weight:800;color:#fff;
  margin-bottom:20px;
}
.hero-title em{font-style:normal;color:var(--sand)}
.hero-sub{font-size:18px;color:rgba(255,255,255,.82);max-width:520px;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats li{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  font-size:12px;color:rgba(255,255,255,.8);
}
.hero-stats li .mono{font-size:15px;color:var(--cyan);font-weight:600}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 30px 70px -28px rgba(0,0,0,.75);
}
.hero-panel{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(255,255,255,.97);color:var(--text);
  border-radius:var(--r-img);padding:14px 18px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  box-shadow:var(--sh-2);
}
.hero-panel .pl{display:flex;flex-direction:column}
.hero-panel .pl span:first-child{font-size:12px;color:var(--muted)}
.hero-panel .pl span:last-child{font-family:var(--mono);font-size:19px;font-weight:600;color:var(--ink)}

/* ================= 合集目录 ================= */
.catalog-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 56px}
.cat-row{
  display:grid;grid-template-columns:54px 1fr 26px;gap:16px;align-items:center;
  padding:24px 10px;border-bottom:1px solid var(--line);
  color:inherit;transition:background-color .22s var(--ease),padding-left .22s var(--ease);
}
.cat-row:hover{background:var(--brand-soft);padding-left:20px;color:inherit}
.cat-num{font-family:var(--mono);font-size:22px;color:var(--brand);font-weight:500;line-height:1}
.cat-title{font-size:17px;font-weight:700;margin-bottom:4px}
.cat-sum{font-size:14px;color:var(--muted);line-height:1.7}
.cat-arrow{color:var(--disabled);font-size:13px;transition:transform .22s var(--ease),color .22s var(--ease)}
.cat-row:hover .cat-arrow{transform:translateX(4px);color:var(--brand)}

/* ================= 精选条目 ================= */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.feat-card:hover{border-color:var(--brand-line);box-shadow:var(--sh-2);transform:translateY(-2px)}
.feat-card.lead{grid-column:span 2}
.feat-media{overflow:hidden;background:#EFEAE1}
.feat-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .22s var(--ease);border-radius:0}
.feat-card.lead .feat-media img{aspect-ratio:16/9}
.feat-card:hover .feat-media img{transform:scale(1.03)}
.feat-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  align-self:flex-start;
  padding:4px 12px;border-radius:var(--r-btn);
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;font-weight:600;line-height:1.6;
}
.chip-ink{background:rgba(47,196,174,.14);color:#1d7d6f}
.feat-title{font-size:18px;font-weight:700;line-height:1.5}
.feat-card.lead .feat-title{font-size:22px}
.feat-title a{color:var(--text)}
.feat-card:hover .feat-title a{color:var(--brand)}
.feat-sum{font-size:14.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feat-meta{margin-top:auto;display:flex;align-items:center;gap:14px;font-family:var(--mono);font-size:12.5px;color:var(--muted)}

/* ================= 最新信息（CMS 区） ================= */
.cms-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{display:flex;flex-direction:column}
.tl-item{
  display:grid;grid-template-columns:64px 168px 1fr;gap:26px;align-items:flex-start;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.tl-item:last-child{border-bottom:0}
.tl-item:hover{background:#FCFAF7}
.tl-index{font-family:var(--mono);font-size:26px;color:var(--line);font-weight:600;line-height:1.1;padding-top:4px}
.tl-item:hover .tl-index{color:var(--brand)}
.tl-thumb{display:block;overflow:hidden;border-radius:var(--r-img);background:#EFEAE1}
.tl-thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .22s var(--ease);border-radius:0}
.tl-item:hover .tl-thumb img{transform:scale(1.03)}
.tl-body{display:flex;flex-direction:column;gap:9px}
.tl-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.tl-meta time{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.tl-title{font-size:19px;font-weight:700;line-height:1.5}
.tl-title a{color:var(--text)}
.tl-title a:hover{color:var(--brand)}
.tl-sum{font-size:14.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:34px 24px;text-align:center;background:#FCFAF7;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:16px}

/* ================= 相关推荐 ================= */
.reco-track{
  display:flex;gap:22px;overflow-x:auto;padding:6px 0 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.reco-track::-webkit-scrollbar{height:6px}
.reco-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.reco-card{
  flex:0 0 calc((100% - 44px) / 3);
  scroll-snap-align:start;
  border-left:3px solid var(--brand);
  padding:6px 0 6px 18px;
}
.reco-card .rc-cat{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.08em}
.reco-card h3{font-size:16.5px;font-weight:700;margin:8px 0 8px;line-height:1.55}
.reco-card h3 a{color:var(--text)}
.reco-card h3 a:hover{color:var(--brand)}
.reco-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin:0}
.scroll-hint{display:none;font-size:12.5px;color:var(--muted);margin-top:6px}

/* ================= 收藏 / 分享 CTA ================= */
.cta-bar{
  background:var(--ink);color:#fff;border-radius:var(--r-block);
  padding:48px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,196,174,.18),transparent 68%);
}
.cta-bar-inner{position:relative;z-index:2}
.cta-bar h2{color:#fff;font-size:clamp(1.4rem,2.3vw,2rem);margin-bottom:12px}
.cta-bar p{color:rgba(255,255,255,.74);font-size:15px;max-width:620px;margin:0}
.cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.icon-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);background:transparent;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.icon-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.qr-box{
  width:92px;height:92px;border-radius:var(--r-img);
  border:1px dashed rgba(255,255,255,.3);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:11px;color:rgba(255,255,255,.6);
}
.qr-box i{font-size:24px;color:rgba(255,255,255,.8)}

/* ================= FAQ ================= */
.faq-list{max-width:900px}
.faq-list .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-list .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-list .accordion-button{
  background:transparent;box-shadow:none;color:var(--text);
  font-size:16px;font-weight:700;padding:22px 44px 22px 4px;line-height:1.6;
}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-dark);background:transparent}
.faq-list .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--cyan);outline-offset:-2px}
.faq-list .accordion-button::after{
  content:"+";background-image:none;
  font-family:var(--mono);font-size:22px;line-height:1;font-weight:400;
  color:var(--brand);width:auto;height:auto;transform:none;
  transition:transform .22s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.faq-list .accordion-body{padding:0 60px 24px 4px;font-size:15px;color:var(--muted);line-height:1.85}

/* ================= 页脚 ================= */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:76px 0 0;margin-top:0}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.ft-brand .brand-mark{background:rgba(255,255,255,.1)}
.ft-brand span{color:#fff;font-size:17px;font-weight:800}
.ft-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.ft-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.ft-col ul{display:flex;flex-direction:column;gap:11px}
.ft-col a{font-size:14px;color:rgba(255,255,255,.66)}
.ft-col a:hover{color:var(--cyan)}
.ft-col p{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:10px}
.ft-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.ft-bottom .mono{color:rgba(255,255,255,.4)}

/* ================= 动效 ================= */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ================= 响应式 ================= */
@media (max-width:1199.98px){
  .main-nav{display:none}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .hd-right{gap:12px}
}
@media (max-width:991.98px){
  .section{padding:80px 0}
  .hero-inner{grid-template-columns:1fr;gap:40px;min-height:auto;padding-top:56px;padding-bottom:64px}
  .hero-title{font-size:clamp(1.9rem,6vw,2.8rem)}
  .hero-visual{order:2}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feat-card.lead{grid-column:span 2}
  .catalog-grid{grid-template-columns:1fr;gap:0}
  .tl-item{grid-template-columns:44px 132px 1fr;gap:18px}
  .cta-bar{grid-template-columns:1fr;gap:28px;padding:38px}
  .ft-grid{grid-template-columns:1fr 1fr;gap:36px}
  .reco-card{flex:0 0 calc((100% - 22px) / 2)}
}
@media (max-width:767.98px){
  body{padding-top:64px;font-size:16px}
  .site-header{height:64px}
  .countdown{display:none}
  .hero-inner{padding-top:44px;padding-bottom:52px}
  .hero-panel{position:static;margin-top:16px;left:auto;bottom:auto;right:auto}
  .feature-grid{grid-template-columns:1fr}
  .feat-card.lead{grid-column:span 1}
  .tl-item{grid-template-columns:1fr;gap:12px}
  .tl-index{font-size:18px;padding-top:0}
  .tl-thumb{max-width:280px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .scroll-hint{display:block}
  .reco-card{flex:0 0 82%}
  .cta-actions{width:100%;justify-content:flex-start}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:58px 0}
  .section-sm{padding:48px 0}
  .btn{height:48px}
  .hero-stats{gap:10px}
  .hero-stats li{padding:7px 12px}
  .cta-bar{padding:26px;border-radius:16px}
  .ft-grid{grid-template-columns:1fr;gap:30px}
  .ft-bottom{flex-direction:column;gap:8px}
  .faq-list .accordion-body{padding-right:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#E1543A;
  --brand-dark:#C0412A;
  --brand-soft:rgba(225,84,58,.10);
  --brand-line:rgba(225,84,58,.30);
  --ink-green:#0F2F28;
  --cyan:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --text:#14161A;
  --muted:#5B6068;
  --disabled:#9AA0A6;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-band:20px;
  --sh-1:0 1px 2px rgba(20,22,26,.06), 0 12px 32px -12px rgba(20,22,26,.18);
  --sh-2:0 1px 2px rgba(20,22,26,.08), 0 18px 44px -14px rgba(20,22,26,.26);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,"IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --bs-primary:#E1543A;
  --bs-body-bg:#F6F3EE;
  --bs-body-color:#14161A;
  --bs-border-color:#E6E0D6;
  --bs-link-color:#C0412A;
  --bs-link-hover-color:#E1543A;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;color:var(--text);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,243,238,.92);
  border-bottom:1px solid var(--line);
  transition:height var(--t),background-color var(--t),box-shadow var(--t);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  box-shadow:0 1px 0 var(--line),0 8px 24px -18px rgba(20,22,26,.4);
}
.hd-inner{
  display:flex;align-items:center;gap:24px;
  height:80px;
  transition:height var(--t);
}
.site-header.is-stuck .hd-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:15px;
  box-shadow:0 6px 16px -8px rgba(225,84,58,.9);
}
.brand-text{
  font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text);white-space:nowrap;
}
.brand:hover .brand-text{color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--muted);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--brand-soft);}
.nav-link.active{color:var(--brand);font-weight:700;background:var(--brand-soft);}
.hd-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:12px;color:var(--muted);white-space:nowrap;
}
.dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.35;transform:scale(.78);}}
.countdown{
  font-family:var(--mono);font-size:14px;letter-spacing:.04em;color:var(--ink-green);
  padding:4px 10px;border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn:disabled,.btn.disabled{opacity:.45;pointer-events:none;}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(225,84,58,.95);}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(192,65,42,.95);}
.btn-ghost{border-color:var(--line);color:var(--text);background:#fff;}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-ghost-light{border-color:rgba(255,255,255,.42);color:#fff;background:transparent;}
.btn-ghost-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.10);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);
  padding:0;height:auto;background:none;border:0;
}
.btn-text i{transition:transform var(--t);}
.btn-text:hover i{transform:translateX(3px);}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  align-items:center;justify-content:center;font-size:16px;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- breadcrumb + page head ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:#fff;}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:14px 0;font-size:13px;color:var(--muted);
}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--disabled);}
.crumb .now{color:var(--text);font-weight:500;}

.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-green);
  color:#fff;
  padding:76px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,47,40,.94) 8%,rgba(15,47,40,.62) 62%,rgba(15,47,40,.34) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.ph-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:#fff;
  border:1px solid rgba(255,255,255,.32);border-radius:var(--r-pill);
  padding:5px 13px;margin-bottom:22px;background:rgba(255,255,255,.06);
}
.ph-tag .dot{background:var(--cyan);}
.page-hero h1{
  color:#fff;
  font-size:clamp(2rem,4.4vw,3.35rem);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
  max-width:16em;
}
.ph-sub{
  margin-top:18px;max-width:34em;
  font-size:17px;color:rgba(255,255,255,.78);line-height:1.8;
}
.ph-stats{
  display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:34px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.18);
}
.ph-stat{display:flex;align-items:baseline;gap:10px;font-size:13px;color:rgba(255,255,255,.7);}
.ph-stat b{
  font-family:var(--mono);font-size:22px;font-weight:700;letter-spacing:.04em;color:#fff;
}
.ph-stat .num-sand{color:var(--sand);}
.ph-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}

/* ---------- section ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--brand);
  margin-bottom:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:800;letter-spacing:-.01em;
  max-width:22em;
}
.sec-sub{margin-top:12px;max-width:44em;color:var(--muted);font-size:16px;}

/* ---------- intro / split ---------- */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;}
.intro-text p{color:var(--muted);font-size:17px;}
.intro-text p strong{color:var(--text);font-weight:700;}
.split-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--sh-1);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.split-media figcaption{
  padding:14px 20px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.index-list{border-top:1px solid var(--line);margin-top:28px;}
.index-item{
  display:flex;align-items:flex-start;gap:18px;
  padding:18px 6px;border-bottom:1px solid var(--line);
  transition:background-color var(--t),padding-left var(--t);
}
.index-item:hover{background:#fff;padding-left:14px;}
.index-num{
  font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);flex:0 0 auto;padding-top:3px;
}
.index-body h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.index-body p{font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- steps timeline ---------- */
.steps{position:relative;margin-top:8px;}
.step{
  position:relative;
  display:grid;grid-template-columns:76px 1fr;gap:22px;
  padding:0 0 34px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:29px;top:44px;bottom:6px;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-num{
  width:58px;height:58px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:17px;font-weight:700;letter-spacing:.04em;
  background:#fff;border:1px solid var(--line);color:var(--brand);
  box-shadow:var(--sh-1);z-index:2;
}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.step-card:hover{border-color:var(--brand-line);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.step-card p{font-size:15px;color:var(--muted);}
.step-meta{
  display:inline-flex;align-items:center;gap:7px;margin-top:12px;
  font-family:var(--mono);font-size:12px;color:var(--muted);
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 11px;
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 32px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;transition:border-color var(--t),box-shadow var(--t);
}
.check-item:hover{border-color:var(--brand-line);box-shadow:var(--sh-1);}
.check-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:12px;margin-top:2px;
}
.check-item h3{font-size:16px;font-weight:700;margin-bottom:5px;}
.check-item p{font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:6px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;padding:22px 40px 22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;position:relative;transition:color var(--t);
}
.faq-q:hover{color:var(--brand);}
.faq-ico{
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--muted);transition:transform var(--t),border-color var(--t),color var(--t);
}
.faq-item.open .faq-ico{transform:translateY(-50%) rotate(180deg);border-color:var(--brand);color:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t);}
.faq-a-inner{padding:0 40px 22px 0;font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink-green);border-radius:var(--r-band);
  padding:48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,196,174,.22) 0%,rgba(47,196,174,0) 70%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;letter-spacing:-.01em;}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;margin-top:14px;}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.82);}
.cta-points i{color:var(--cyan);font-size:12px;}
.cta-form{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:16px;padding:26px;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.82);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.94);border:1px solid transparent;
  border-radius:var(--r-input);padding:11px 14px;font-size:15px;color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,196,174,.22);}
.form-note{font-size:13px;color:rgba(255,255,255,.66);margin-top:12px;}
.form-msg{font-size:13px;color:var(--cyan);margin-top:10px;display:none;}
.form-msg.show{display:block;}

/* ---------- related links ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.rel-card:hover{border-color:var(--brand-line);box-shadow:var(--sh-2);transform:translateY(-3px);}
.rel-card .rel-num{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--brand);display:block;margin-bottom:12px;
}
.rel-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--muted);line-height:1.7;}
.rel-card .rel-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13px;font-weight:600;color:var(--brand);
}
.rel-card:hover .rel-more i{transform:translateX(3px);}
.rel-more i{transition:transform var(--t);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-green);color:rgba(255,255,255,.76);padding:72px 0 28px;margin-top:24px;}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-weight:800;font-size:16px;}
.ft-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:32em;}
.ft-col h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.ft-col ul{margin:0;}
.ft-col li{margin-bottom:10px;}
.ft-col a{font-size:14px;color:rgba(255,255,255,.72);}
.ft-col a:hover{color:var(--cyan);}
.ft-col p{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;}
.ft-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 280ms ease,transform 280ms ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container{padding:0 20px;}
  .intro-grid{gap:40px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .hd-inner{height:64px;gap:12px;}
  .site-header.is-stuck .hd-inner{height:58px;}
  .brand-text{font-size:15px;}
  .burger{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:20px 24px 120px;margin:0;
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    z-index:999;
  }
  .main-nav.open{opacity:1;transform:none;pointer-events:auto;}
  .main-nav .nav-link{font-size:16px;padding:14px 16px;border-radius:12px;}
  .hd-right .btn-brand{display:none;}
  .main-nav::after{
    content:"立即进入";display:flex;align-items:center;justify-content:center;
    margin-top:16px;height:48px;border-radius:var(--r-pill);
    background:var(--brand);color:#fff;font-weight:600;font-size:15px;pointer-events:none;
  }
  .section{padding:64px 0;}
  .intro-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:34px;}
  .ft-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .check-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 16px;}
  .countdown{display:none;}
  .status-badge{padding:4px 10px;font-size:11px;}
  .page-hero{padding:52px 0 50px;}
  .ph-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .step{grid-template-columns:1fr;gap:14px;padding-bottom:26px;}
  .step::before{display:none;}
  .step-num{width:48px;height:48px;font-size:15px;border-radius:14px;}
  .rel-grid{grid-template-columns:1fr;}
  .ft-grid{grid-template-columns:1fr;}
  .ft-bottom{flex-direction:column;gap:8px;}
  .cta-band{padding:26px 20px;}
  .faq-q{font-size:15px;padding:18px 36px 18px 0;}
  .faq-a-inner{padding-right:0;font-size:14px;}
}
@media (max-width:575.98px){
  .brand-text{font-size:14px;max-width:9.5em;overflow:hidden;text-overflow:ellipsis;}
  .page-hero h1{font-size:1.85rem;}
  .ph-actions .btn{width:100%;}
  .cta-form{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand:#E1543A;
  --brand-dark:#C0412A;
  --brand-10:rgba(225,84,58,.10);
  --brand-30:rgba(225,84,58,.30);
  --ink:#0F2F28;
  --ink-2:#17423A;
  --cyan:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --line-soft:#EFEAE1;
  --text:#14161A;
  --text-2:#5B6068;
  --text-3:#9AA0A6;
  --radius-card:14px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --radius-cta:20px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 12px 32px -12px rgba(20,22,26,.18);
  --shadow-2h:0 18px 42px -14px rgba(20,22,26,.26);
  --font-sans:'Noto Sans SC','PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,'IBM Plex Mono','SFMono-Regular',Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#E1543A;
  --bs-body-bg:#F6F3EE;
  --bs-body-color:#14161A;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
.mono{font-family:var(--font-mono);letter-spacing:.04em;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all 220ms var(--ease);white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2h);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-light{background:#fff;color:var(--ink);border-color:rgba(255,255,255,.24);}
.btn-light:hover{background:#fff;color:var(--brand);}
.btn-outline-light2{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light2:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-text{padding:0;height:auto;border:0;background:none;color:var(--brand);font-weight:600;}
.btn-text i{transition:transform 220ms var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.btn:focus-visible,.burger:focus-visible,.nav-link:focus-visible,a:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;border-radius:8px;
}
.btn:disabled,.btn.disabled{opacity:.45;pointer-events:none;}
.btn-block{width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;height:80px;
  background:rgba(246,243,238,.92);
  border-bottom:1px solid transparent;
  transition:height 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{
  height:60px;background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,22,26,.06);
}
.hd-inner{display:flex;align-items:center;gap:20px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.brand:hover .brand-text{color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  padding:8px 12px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:500;
  color:var(--text-2);transition:all 200ms var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(20,22,26,.05);}
.nav-link.active{color:var(--brand);background:var(--brand-10);font-weight:700;}
.hd-right{display:flex;align-items:center;gap:14px;margin-left:6px;}
.status-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);
  padding:5px 10px;border:1px solid var(--line);border-radius:var(--radius-pill);background:#fff;
}
.status-badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:pulse 2.4s infinite ease-in-out;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.42;transform:scale(.82);}}
.countdown{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);padding:5px 12px;
}
.site-header .btn-brand{height:40px;padding:0 18px;font-size:14px;}
.site-header.is-scrolled .btn-brand{height:36px;}
.burger{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--text);align-items:center;justify-content:center;font-size:16px;
  transition:all 200ms var(--ease);
}
.burger:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:1050;background:var(--bg);
  display:flex;flex-direction:column;transform:translateX(100%);
  transition:transform 280ms var(--ease);visibility:hidden;
}
.drawer.open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--text);}
.drawer-nav{padding:12px 22px;display:flex;flex-direction:column;overflow-y:auto;}
.drawer-nav a{padding:16px 0;border-bottom:1px solid var(--line-soft);font-size:17px;font-weight:600;color:var(--text);}
.drawer-nav a.active{color:var(--brand);}
.drawer-foot{margin-top:auto;padding:22px;border-top:1px solid var(--line);}
.drawer-note{font-size:13px;color:var(--text-3);margin-bottom:14px;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--text-3);}
.crumb .cur{color:var(--text);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-hero{padding:28px 0 0;}
.hero-inner{max-width:760px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-10);border:1px solid var(--brand-30);
  padding:5px 12px;border-radius:var(--radius-pill);
}
.article-title{
  font-size:clamp(1.75rem,3.4vw,2.75rem);line-height:1.25;font-weight:800;
  letter-spacing:-.02em;margin:18px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--text-2);
}
.article-meta .sp{color:var(--line);}
.article-cover{margin:32px 0 0;max-width:760px;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-1);}

/* ============ 布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);justify-content:center;padding:44px 0 0;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px;gap:56px;align-items:start;}
}
.article-aside{display:none;}
@media (min-width:1200px){
  .article-aside{display:block;position:sticky;top:92px;}
}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.aside-title{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em;margin-bottom:14px;}
.aside-list li{border-bottom:1px solid var(--line-soft);}
.aside-list li:last-child{border-bottom:0;}
.aside-list a{display:flex;align-items:center;gap:10px;padding:11px 0;font-size:14.5px;color:var(--text-2);transition:color 200ms var(--ease);}
.aside-list a:hover{color:var(--brand);}
.aside-list i{font-size:6px;color:var(--cyan);}
.aside-divider{height:1px;background:var(--line);margin:20px 0;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.tag-mini{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);background:#fff;
  padding:4px 10px;border-radius:var(--radius-pill);transition:all 200ms var(--ease);
}
.tag-mini:hover{border-color:var(--brand-30);color:var(--brand);}

/* ============ 正文 ============ */
.article-main{max-width:760px;}
.article-body{font-size:17.5px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700;line-height:1.4;
  margin:2.2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:1.15rem;font-weight:700;margin:1.9em 0 .6em;
  padding-bottom:.5em;border-bottom:1px solid var(--line);
}
.article-body h4{font-size:1.02rem;font-weight:700;margin:1.6em 0 .5em;}
.article-body img{width:auto;max-width:100%;height:auto;border-radius:var(--radius-img);margin:1.6em auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:.6em;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--brand-10);border-radius:0 10px 10px 0;color:var(--text-2);
}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;}
.article-body a{color:var(--brand);border-bottom:1px solid var(--brand-30);}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-body strong{font-weight:700;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:#FBF9F6;font-weight:600;}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;background:#F1ECE4;
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--ink);color:#E8F3EF;padding:18px;border-radius:var(--radius-img);
  overflow:auto;font-family:var(--font-mono);font-size:14px;margin:1.6em 0;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

.empty-box{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
  padding:40px 24px;text-align:center;
}
.empty-box h2{font-size:20px;margin-bottom:10px;}
.empty-box p{color:var(--text-2);font-size:15px;margin-bottom:18px;}

/* ============ 标签 ============ */
.tag-section{margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-section .label{font-size:13px;color:var(--text-3);letter-spacing:.08em;font-weight:700;margin-bottom:14px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:#fff;padding:7px 14px;border-radius:var(--radius-pill);
  transition:all 200ms var(--ease);
}
.tag:hover{border-color:var(--brand-30);color:var(--brand);transform:translateY(-2px);}

/* ============ 收藏 / 分享条 ============ */
.share-bar{
  margin-top:36px;background:var(--ink);border-radius:var(--radius-cta);
  padding:30px 32px;color:#fff;box-shadow:var(--shadow-2);
}
.share-bar h3{font-size:clamp(1.15rem,2vw,1.5rem);margin-bottom:8px;color:#fff;}
.share-bar p{font-size:14.5px;color:rgba(255,255,255,.68);margin-bottom:20px;line-height:1.7;}
.share-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.icon-group{display:flex;gap:10px;margin-left:auto;}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-pill);display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.28);background:transparent;color:#fff;font-size:15px;
  transition:all 200ms var(--ease);cursor:pointer;
}
.icon-btn:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px);}
.qr-box{
  width:92px;height:92px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px dashed rgba(255,255,255,.3);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;font-size:11px;color:rgba(255,255,255,.6);
}
.qr-box i{font-size:22px;color:var(--cyan);}

/* ============ 相关推荐 ============ */
.related{margin-top:56px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.section-head h2{font-size:clamp(1.25rem,2.2vw,1.6rem);}
.section-head .sub{font-size:13px;color:var(--text-3);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-item{
  border-left:3px solid var(--brand);padding:4px 0 4px 16px;
  transition:all 200ms var(--ease);
}
.rel-item:hover{transform:translateX(4px);}
.rel-item .num{font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.08em;}
.rel-item h3{font-size:16px;font-weight:700;margin:6px 0 6px;line-height:1.5;}
.rel-item:hover h3{color:var(--brand);}
.rel-item p{font-size:13.5px;color:var(--text-2);line-height:1.75;}

.back-row{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between;}
.back-row .hint{font-size:13.5px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-section{margin-top:56px;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-border-radius:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;--bs-accordion-active-color:var(--brand);}
.faq-acc .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;padding:20px 0;font-size:16px;font-weight:600;color:var(--text);
  box-shadow:none;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);}
.faq-acc .accordion-button::after{
  width:14px;height:14px;background-size:14px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v12M2 8h12' stroke='%23E1543A' stroke-width='1.7' stroke-linecap='round'/%3E%3C/svg%3E");
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M2 8h12' stroke='%23E1543A' stroke-width='1.7' stroke-linecap='round'/%3E%3C/svg%3E");
  transform:rotate(180deg);
}
.faq-acc .accordion-body{padding:0 0 22px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:96px;padding:64px 0 28px;}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.ft-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;color:#fff;margin-bottom:16px;}
.ft-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:38ch;}
.ft-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.ft-col ul li{margin-bottom:11px;}
.ft-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color 200ms var(--ease);}
.ft-col a:hover{color:var(--brand);}
.ft-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:8px;}
.ft-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 260ms var(--ease),transform 260ms var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none!important;transition:none!important;}
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{padding:0 22px;}
}
@media (max-width:1100px){
  .main-nav{display:none;}
  .burger{display:inline-flex;}
  .hd-right{margin-left:auto;}
}
@media (max-width:992px){
  .ft-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rel-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .countdown{display:none;}
  .status-badge{display:none;}
  .site-header{height:64px;}
  .site-header.is-scrolled{height:58px;}
  .brand-text{font-size:15px;}
  .crumb-bar{padding:18px 0 0;}
  .crumb .cur{white-space:normal;max-width:100%;}
  .article-layout{padding:32px 0 0;}
  .article-body{font-size:17px;line-height:1.9;}
  .share-bar{padding:24px 22px;}
  .icon-group{margin-left:0;width:100%;}
  .qr-box{display:none;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
  .ft-grid{grid-template-columns:1fr;gap:28px;}
  .ft-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:576px){
  .container{padding:0 16px;}
  .article-title{font-size:1.6rem;}
  .btn{height:48px;width:100%;}
  .btn-text{height:auto;width:auto;}
  .share-actions .btn{width:100%;}
  .back-row{flex-direction:column;align-items:stretch;}
  .back-row .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand:#E1543A;
  --brand-dark:#C0412A;
  --brand-10:rgba(225,84,58,.10);
  --brand-30:rgba(225,84,58,.30);
  --ink-green:#0F2F28;
  --ink-green-2:#164036;
  --cyan:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --text:#14161A;
  --text-2:#5B6068;
  --text-3:#9AA0A6;
  --radius-card:14px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --radius-block:20px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 1px 2px rgba(20,22,26,.06), 0 12px 32px -12px rgba(20,22,26,.18);
  --shadow-3:0 1px 2px rgba(20,22,26,.08), 0 20px 44px -16px rgba(20,22,26,.26);
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#E1543A;
  --bs-primary-rgb:225,84,58;
  --bs-body-bg:#F6F3EE;
  --bs-body-color:#14161A;
  --bs-border-color:#E6E0D6;
  --bs-link-color:#14161A;
  --bs-link-hover-color:#E1543A;
  --bs-font-sans-serif:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --bs-body-font-size:17px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--text);letter-spacing:-0.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-10);color:var(--brand-dark)}

.container{width:100%;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media (min-width:576px){.container{max-width:560px}}
@media (min-width:768px){.container{max-width:740px}}
@media (min-width:992px){.container{max-width:980px}}
@media (min-width:1200px){.container{max-width:1240px}}
@media (min-width:1400px){.container{max-width:1240px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  height:80px;
  display:flex;align-items:center;
  background:rgba(246,243,238,.94);
  border-bottom:1px solid transparent;
  transition:height .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.compact{
  height:60px;
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,22,26,.07);
}
.hd-inner{display:flex;align-items:center;gap:24px;width:100%;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;flex:0 0 auto;
  box-shadow:0 6px 14px -8px rgba(225,84,58,.75);
}
.brand-text{font-size:16px;font-weight:800;color:var(--text);white-space:nowrap;letter-spacing:-0.01em}
.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.main-nav .nav-link{
  padding:8px 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:background .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.main-nav .nav-link:hover{color:var(--brand);background:var(--brand-10)}
.main-nav .nav-link.active{color:var(--brand);background:var(--brand-10);font-weight:700}
.hd-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.status-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--text-2);white-space:nowrap;
}
.status-badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(47,196,174,.45)}
  50%{opacity:.55;box-shadow:0 0 0 5px rgba(47,196,174,0)}
}
.countdown{
  font-family:var(--mono);font-size:13px;letter-spacing:.04em;
  color:var(--ink-green);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:5px 12px;white-space:nowrap;
}
.burger{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.burger:hover{border-color:var(--brand-30);color:var(--brand)}

/* 抽屉菜单 */
.drawer{
  position:fixed;inset:0;z-index:1200;
  background:var(--bg);
  padding:20px 20px 28px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.open{opacity:1;visibility:visible;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--text);font-size:16px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;flex:1 1 auto}
.drawer-nav a{
  padding:16px 4px;font-size:18px;font-weight:700;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand)}
.drawer-foot{display:flex;flex-direction:column;gap:14px;align-items:flex-start;padding-top:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  text-decoration:none;
}
.btn:disabled,.btn.disabled{opacity:.45;cursor:not-allowed;transform:none!important}
.btn.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 1px 2px rgba(20,22,26,.06)}
.btn.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn.btn-ghost:hover{color:var(--brand);border-color:var(--brand-30);transform:translateY(-2px)}
.btn.btn-on-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn.btn-on-dark:hover{background:#fff;color:var(--ink-green);border-color:#fff}
.btn.btn-solid-light{background:#fff;color:var(--ink-green);border-color:#fff}
.btn.btn-solid-light:hover{background:var(--sand);border-color:var(--sand);color:var(--ink-green);transform:translateY(-2px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
}
.btn-text i{transition:transform .22s var(--ease)}
.btn-text:hover i{transform:translateX(3px)}
.btn-block{width:100%}

/* ============ 区块通用 ============ */
.section{padding:104px 0}
.section-tight{padding:72px 0}
.sec-head{margin-bottom:44px;max-width:760px}
.sec-index{
  display:inline-block;font-size:12px;color:var(--brand);
  background:var(--brand-10);border-radius:var(--radius-pill);
  padding:3px 12px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.25;margin-bottom:14px}
.sec-desc{font-size:16px;color:var(--text-2);margin:0}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head-row .sec-head{margin-bottom:0}
.hr-line{height:1px;background:var(--line);border:0;margin:0}

/* ============ 内页页头 ============ */
.page-head{position:relative;overflow:hidden;background:var(--ink-green)}
.page-head .ph-bg{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:.30;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,47,40,.94) 8%,rgba(15,47,40,.62) 58%,rgba(15,47,40,.42) 100%);
}
.ph-inner{position:relative;z-index:2;padding:88px 0 76px;max-width:880px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.82)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.ph-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  color:var(--cyan);border:1px solid rgba(47,196,174,.4);
  border-radius:var(--radius-pill);padding:4px 14px;margin-bottom:20px;
}
.page-head h1{
  color:#fff;
  font-size:clamp(1.9rem,4vw,3.1rem);
  line-height:1.15;letter-spacing:-0.02em;
  margin-bottom:18px;
}
.ph-sub{font-size:17px;color:rgba(255,255,255,.78);margin-bottom:26px;max-width:620px}
.ph-tags{display:flex;flex-wrap:wrap;gap:10px}
.ph-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.22);border-radius:var(--radius-pill);
  padding:5px 13px;font-family:var(--mono);letter-spacing:.03em;
}
.ph-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:pulse 2.4s ease-in-out infinite}
.ph-tag em{font-style:normal;color:var(--sand)}

/* ============ 导语 + 数据卡 ============ */
.intro-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:48px;align-items:start}
.intro-body p{font-size:17.5px;color:var(--text);max-width:64ch}
.intro-body p.note{color:var(--text-2);font-size:16px}
.fact-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.fact-card h3{font-size:16px;margin-bottom:6px}
.fact-card .fc-hint{font-size:13px;color:var(--text-3);margin-bottom:18px}
.fact-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid var(--line)}
.fact-list li:first-child{border-top:0;padding-top:0}
.fact-list .fl-key{font-size:14px;color:var(--text-2)}
.fact-list .fl-val{font-family:var(--mono);font-size:19px;font-weight:600;color:var(--brand)}
.fact-card .btn{margin-top:20px}

/* ============ 图文构成区 ============ */
.compose-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.compose-media{border-radius:var(--radius-block);overflow:hidden;border:1px solid var(--line);background:#fff}
.compose-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.compose-text h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.28;margin-bottom:16px}
.compose-text p{color:var(--text-2);font-size:16.5px}
.compose-points{margin-top:26px;border-top:1px solid var(--line)}
.compose-points li{
  display:grid;grid-template-columns:44px 1fr;gap:14px;
  padding:16px 0;border-bottom:1px solid var(--line);align-items:start;
}
.compose-points .cp-no{font-family:var(--mono);font-size:13px;color:var(--sand);font-weight:600;letter-spacing:.04em;padding-top:3px}
.compose-points .cp-title{font-size:16px;font-weight:700;margin-bottom:4px}
.compose-points .cp-desc{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.75}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px;padding-left:36px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:14px;width:1px;background:var(--line)}
.tl-item{position:relative;padding:0 0 44px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-36px;top:9px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--brand);
}
.tl-item.is-now .tl-dot{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(47,196,174,.16)}
.tl-meta{font-size:12.5px;color:var(--text-3);margin-bottom:8px}
.tl-title{font-size:20px;line-height:1.4;margin-bottom:10px}
.tl-text{font-size:16px;color:var(--text-2);max-width:70ch;margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--text-2);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:4px 12px;
}
.tag i{color:var(--cyan);font-size:11px}

/* ============ 排行列表 ============ */
.rank-list{border-top:1px solid var(--line)}
.rank-row{
  display:grid;grid-template-columns:64px 1.5fr 1fr auto;gap:24px;align-items:center;
  padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.rank-row:hover{background:rgba(225,84,58,.05)}
.rank-no{font-family:var(--mono);font-size:22px;font-weight:600;color:var(--text-3);letter-spacing:.04em}
.rank-row.top .rank-no{color:var(--brand)}
.rank-title{font-size:17px;font-weight:700;margin-bottom:3px}
.rank-desc{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.7}
.rank-fit{font-size:14px;color:var(--text-2)}
.rank-badge{
  font-size:12px;padding:5px 13px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:#fff;color:var(--text-2);white-space:nowrap;
}
.rank-badge.b1{background:rgba(242,193,78,.16);border-color:rgba(242,193,78,.5);color:#8a6a12}
.rank-badge.b2{background:var(--brand-10);border-color:var(--brand-30);color:var(--brand-dark)}
.rank-badge.b3{background:rgba(47,196,174,.12);border-color:rgba(47,196,174,.4);color:#17796b}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;box-shadow:none!important;
  padding:20px 4px;font-size:16px;font-weight:700;color:var(--text);
  display:flex;justify-content:space-between;gap:20px;align-items:center;
}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent}
.accordion-button::after{
  background-image:none!important;
  content:"+";
  font-family:var(--mono);font-size:20px;line-height:1;
  width:24px;height:24px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.accordion-body{padding:0 4px 24px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:74ch}

/* ============ CTA 条 ============ */
.cta-block{
  background:var(--ink-green);border-radius:var(--radius-block);
  padding:52px 48px;color:#fff;position:relative;overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,196,174,.22),transparent 68%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:center}
.cta-head h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.3;margin-bottom:14px}
.cta-head p{color:rgba(255,255,255,.78);font-size:16px;max-width:46ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.cta-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px}
.cta-meta span{font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.66);letter-spacing:.03em}
.form-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  padding:26px;
}
.form-card h3{color:#fff;font-size:16px;margin-bottom:6px}
.form-card .fm-hint{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px}
.fm-field{margin-bottom:16px}
.fm-field label{display:block;font-size:13px;color:rgba(255,255,255,.82);margin-bottom:7px}
.fm-field input,.fm-field textarea{
  width:100%;background:#fff;border:1px solid rgba(255,255,255,.25);
  border-radius:var(--radius-input);padding:11px 14px;font-size:15px;color:var(--text);
  font-family:inherit;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.fm-field textarea{resize:vertical;min-height:84px;line-height:1.7}
.fm-field input:focus,.fm-field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,196,174,.25);
}
.fm-field.has-error input,.fm-field.has-error textarea{border-color:var(--brand);box-shadow:0 0 0 3px rgba(225,84,58,.2)}
.fm-error{display:none;font-size:13px;color:#F0A28F;margin-top:6px}
.fm-field.has-error .fm-error{display:block}
.fm-note{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:14px}
.fm-success{
  display:none;margin-top:16px;font-size:14px;color:#8FE3D6;
  border:1px dashed rgba(47,196,174,.5);border-radius:var(--radius-input);padding:12px 14px;
}
.fm-success.show{display:block}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{border-color:var(--brand-30);transform:translateY(-2px);box-shadow:var(--shadow-2);color:inherit}
.rel-card:hover .rel-title{color:var(--brand)}
.rel-no{font-family:var(--mono);font-size:12px;color:var(--text-3);letter-spacing:.06em;display:block;margin-bottom:12px}
.rel-title{font-size:17px;font-weight:700;margin-bottom:8px;transition:color .22s var(--ease)}
.rel-desc{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.rel-card.current{border-color:var(--brand);background:var(--brand-10)}
.rel-card.current .rel-no{color:var(--brand)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-green);color:rgba(255,255,255,.74);padding:72px 0 28px;margin-top:104px}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:44px}
.ft-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:18px}
.ft-about{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:40ch}
.ft-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.ft-col ul li{margin-bottom:11px}
.ft-col a,.ft-col p{font-size:14px;color:rgba(255,255,255,.66);margin:0 0 11px;transition:color .22s var(--ease)}
.ft-col a:hover{color:var(--sand)}
.ft-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1199px){
  .section{padding:88px 0}
  .intro-grid{grid-template-columns:1fr;gap:36px}
  .compose-grid{grid-template-columns:1fr;gap:36px}
  .rank-row{grid-template-columns:56px 1.4fr 1fr auto;gap:18px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .burger{display:inline-flex}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .cta-block{padding:40px 30px}
  .ft-grid{grid-template-columns:1fr 1fr;gap:36px}
  .ph-inner{padding:72px 0 60px}
}
@media (max-width:767px){
  body{font-size:16.5px}
  .countdown{display:none}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:16px}
  .brand-text{font-size:15px}
  .page-head h1{font-size:clamp(1.6rem,6.6vw,2.1rem)}
  .timeline{padding-left:28px}
  .tl-dot{left:-28px;width:13px;height:13px}
  .rank-row{grid-template-columns:1fr;gap:10px;padding:18px 6px}
  .rank-no{font-size:16px}
  .rank-badge{justify-self:start}
  .rel-grid{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr;gap:30px}
  .ft-bottom{flex-direction:column;gap:8px}
  .site-footer{padding:56px 0 24px;margin-top:64px}
  .btn{height:48px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .cta-block{padding:32px 20px;border-radius:16px}
  .fact-card,.form-card{padding:20px}
  .compose-points li{grid-template-columns:34px 1fr;gap:10px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#E1543A;
  --brand-dark:#C0412A;
  --brand-10:rgba(225,84,58,.10);
  --brand-30:rgba(225,84,58,.30);
  --ink-green:#0F2F28;
  --cyan:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --text:#14161A;
  --muted:#5B6068;
  --dim:#9AA0A6;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-band:20px;
  --shadow:0 1px 2px rgba(20,22,26,.06), 0 12px 32px -12px rgba(20,22,26,.18);
  --shadow-hover:0 1px 2px rgba(20,22,26,.08), 0 18px 42px -14px rgba(20,22,26,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:17px;line-height:1.85;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;line-height:1.28;letter-spacing:-.01em}
h1{font-weight:800}
p{margin:0 0 1.2em}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
img{max-width:100%;display:block}
button{font-family:inherit}
ul{margin:0 0 1.2em;padding-left:1.2em}
table{border-collapse:collapse;width:100%}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{max-width:1240px;padding-inline:24px;margin-inline:auto}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 4px 22px -14px rgba(20,22,26,.34);
}
.hd-inner{display:flex;align-items:center;gap:26px;height:80px;transition:height .22s var(--ease)}
.site-header.scrolled .hd-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 6px 16px -8px rgba(225,84,58,.9);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1 1 auto}
.nav-link{
  font-size:15px;font-weight:500;color:var(--muted);padding:9px 14px;border-radius:var(--r-pill);
  transition:color .22s var(--ease),background .22s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-10)}
.nav-link.active{color:var(--brand-dark);background:var(--brand-10);font-weight:600}
.hd-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:500;
  color:#0c4a3f;background:rgba(47,196,174,.13);border:1px solid rgba(47,196,174,.38);
  padding:5px 11px;border-radius:var(--r-pill);white-space:nowrap;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:breath 2.4s ease-in-out infinite}
@keyframes breath{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.3;transform:scale(.75)}}
.countdown{font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--muted)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(225,84,58,.95)}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink-green)}
.btn-light:hover{background:#fff;color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff;transform:translateY(-2px)}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-dark);font-weight:600;font-size:15px;
  background:none;border:0;padding:0;cursor:pointer;
}
.btn-text i{transition:transform .22s var(--ease)}
.btn-text:hover{color:var(--brand)}
.btn-text:hover i{transform:translateX(3px)}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  color:var(--text);align-items:center;justify-content:center;font-size:16px;cursor:pointer;
}
.burger:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;background:#fff;z-index:1040;transform:translateX(101%);
  transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:22px 24px 26px;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;font-size:16px;cursor:pointer}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer nav{display:flex;flex-direction:column;gap:2px}
.drawer nav a{
  font-size:17px;font-weight:600;padding:16px 4px;border-bottom:1px solid var(--line);color:var(--text);
}
.drawer nav a.active,.drawer nav a:hover{color:var(--brand)}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%;height:48px}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--ink-green);color:#fff;overflow:hidden;padding:78px 0 82px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(15,47,40,.95) 8%,rgba(15,47,40,.72) 55%,rgba(15,47,40,.5) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{font-size:13px;color:rgba(255,255,255,.68);margin-bottom:26px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:rgba(255,255,255,.35)}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--cyan);
  margin-bottom:16px;text-transform:uppercase;
}
.page-hero h1{font-size:clamp(1.9rem,4.2vw,3.1rem);line-height:1.16;color:#fff;max-width:19em;letter-spacing:-.02em}
.page-sub{font-size:18px;line-height:1.7;color:rgba(255,255,255,.82);max-width:42em;margin-bottom:26px}
.head-tags{display:flex;flex-wrap:wrap;gap:10px}
.head-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.28);border-radius:var(--r-pill);padding:7px 14px;
  font-family:var(--mono);letter-spacing:.04em;
}
.head-tag .tick{width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- section head ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  border-top:1px solid var(--line);padding-top:26px;margin-bottom:38px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.25rem);margin:0;letter-spacing:-.015em}
.section-title .idx{font-family:var(--mono);font-size:.55em;color:var(--brand);vertical-align:middle;margin-right:12px;letter-spacing:.06em}
.section-desc{font-size:15px;color:var(--muted);margin:8px 0 0;max-width:52em}

/* ---------- lead ---------- */
.lead-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:56px;align-items:start}
.lead-text p{font-size:17.5px;color:#2c3037}
.lead-text p:last-child{margin-bottom:0}
.fact-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--shadow);
}
.fact-card h3{font-size:15px;color:var(--muted);font-weight:600;letter-spacing:.02em;margin-bottom:18px}
.fact-row{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.fact-row:last-child{border-bottom:0;padding-bottom:0}
.fact-row .k{font-size:14px;color:var(--muted)}
.fact-row .v{font-family:var(--mono);font-size:18px;font-weight:600;color:var(--text);letter-spacing:.02em}
.fact-row .v.brand{color:var(--brand)}

/* ---------- cards 2 col ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.sec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.sec-card:hover{border-color:var(--brand-30);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.sec-card .thumb{aspect-ratio:3/2;overflow:hidden;background:#efeae2}
.sec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s var(--ease)}
.sec-card:hover .thumb img{transform:scale(1.03)}
.sec-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.chip{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-10);border-radius:var(--r-pill);padding:4px 11px;
}
.chip-sand{color:#7a5a06;background:rgba(242,193,78,.22)}
.num-code{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.1em}
.sec-card h3{font-size:20px;margin:0 0 10px;transition:color .22s var(--ease)}
.sec-card:hover h3{color:var(--brand)}
.sec-card p{font-size:15px;color:var(--muted);margin:0 0 18px}
.sec-card .meta{
  margin-top:auto;display:flex;align-items:center;gap:14px;font-family:var(--mono);
  font-size:12.5px;color:var(--dim);letter-spacing:.04em;border-top:1px solid var(--line);padding-top:14px;
}
.sec-card .meta i{color:var(--cyan)}

/* ---------- checklist ---------- */
.list-block{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.list-col h3{
  font-size:16px;font-weight:700;margin:0 0 6px;display:flex;align-items:center;gap:10px;
}
.list-col h3 .bar{width:4px;height:16px;border-radius:2px;background:var(--brand);display:inline-block}
.list-col > p{font-size:14.5px;color:var(--muted);margin-bottom:8px}
.chk{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.chk .idx{font-family:var(--mono);font-size:13px;color:var(--brand);min-width:26px;padding-top:4px;letter-spacing:.06em}
.chk .txt strong{display:block;font-size:16px;margin-bottom:4px}
.chk .txt span{font-size:14.5px;color:var(--muted)}

/* ---------- form ---------- */
.form-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:start}
.form-intro h2{font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:14px}
.form-intro p{color:var(--muted);font-size:16px}
.form-intro .point{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);font-size:15px}
.form-intro .point i{color:var(--cyan);margin-top:5px}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);background:#fff;
  padding:12px 14px;font-size:15px;color:var(--text);font-family:inherit;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,196,174,.16);
}
.field.has-error input,.field.has-error textarea{border-color:var(--brand)}
.err-text{display:none;font-size:13px;color:var(--brand);margin-top:6px}
.field.has-error .err-text{display:block}
.form-note{font-size:13px;color:var(--dim);margin:14px 0 0}
.form-ok{
  display:none;margin-top:18px;font-size:14px;color:#0c4a3f;background:rgba(47,196,174,.12);
  border:1px solid rgba(47,196,174,.4);border-radius:var(--r-input);padding:12px 16px;
}
.form-ok.show{display:block}

/* ---------- 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;
  background:none;border:0;padding:24px 2px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .sign{
  font-family:var(--mono);font-size:18px;color:var(--brand);flex:0 0 auto;
  transition:transform .22s var(--ease);
}
.faq-item.open .sign{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 2px 24px;margin:0;font-size:15px;color:var(--muted);max-width:76em}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;background:var(--ink-green);border-radius:var(--r-band);color:#fff;
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  overflow:hidden;box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,196,174,.28),transparent 68%);
}
.cta-band .cta-copy{position:relative;z-index:2;max-width:44em}
.cta-band h2{font-size:clamp(1.4rem,2.6vw,2.1rem);color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:16px}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- related links ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rel-card{
  display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 22px;transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{border-color:var(--brand-30);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.rel-card .num-code{color:var(--brand)}
.rel-card h3{font-size:16px;margin:0;transition:color .22s var(--ease)}
.rel-card:hover h3{color:var(--brand)}
.rel-card p{font-size:14px;color:var(--muted);margin:0}
.rel-card .arrow{font-size:13px;color:var(--dim);margin-top:auto;transition:transform .22s var(--ease),color .22s var(--ease)}
.rel-card:hover .arrow{transform:translateX(4px);color:var(--brand)}
.rel-card.current{border-color:var(--brand);background:#fff}
.rel-card.current .num-code{color:var(--ink-green)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-green);color:rgba(255,255,255,.72);padding:76px 0 26px;font-size:15px}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.14)}
.ft-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.ft-about{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:34em}
.ft-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.02em}
.ft-col ul{list-style:none;padding:0;margin:0}
.ft-col li{margin-bottom:11px}
.ft-col a{font-size:14.5px;color:rgba(255,255,255,.7)}
.ft-col a:hover{color:#fff}
.ft-col p{font-size:14.5px;color:rgba(255,255,255,.66);margin:0 0 10px}
.ft-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .lead-grid{gap:36px}
  .ft-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .ft-grid > div:last-child{grid-column:span 3}
}
@media (max-width:992px){
  .main-nav{display:none}
  .burger{display:inline-flex}
  .hd-right .countdown{display:none}
  .lead-grid{grid-template-columns:1fr;gap:32px}
  .grid-2{grid-template-columns:1fr}
  .list-block{grid-template-columns:1fr;gap:0}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:76px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .page-hero{padding:64px 0 68px}
}
@media (max-width:768px){
  body{font-size:16.5px}
  .brand-text{font-size:15px}
  .hd-inner{height:64px;gap:14px}
  .hd-right .btn-brand{display:none}
  .ft-grid{grid-template-columns:1fr;gap:26px}
  .ft-grid > div:last-child{grid-column:auto}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .page-hero h1{font-size:1.85rem}
  .page-sub{font-size:16.5px}
  .faq-q{font-size:15.5px;padding:20px 2px}
  .cta-band{padding:34px 24px;border-radius:16px}
}
@media (max-width:576px){
  .container{padding-inline:16px}
  .rel-grid{grid-template-columns:1fr}
  .sec-card .body{padding:20px}
  .form-card{padding:22px}
  .head-tag{font-size:11.5px;padding:6px 11px}
  .ft-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --primary:#E1543A;
  --primary-dark:#C0412A;
  --primary-soft:rgba(225,84,58,.10);
  --dark:#0F2F28;
  --dark-soft:rgba(15,47,40,.06);
  --accent:#2FC4AE;
  --sand:#F2C14E;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --line:#E6E0D6;
  --text:#14161A;
  --muted:#5B6068;
  --disabled:#9AA0A6;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-block:20px;
  --shadow:0 1px 2px rgba(20,22,26,.06),0 12px 32px -12px rgba(20,22,26,.18);
  --shadow-hover:0 1px 2px rgba(20,22,26,.08),0 22px 46px -14px rgba(20,22,26,.26);
  --mono:ui-monospace,"IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#E1543A;
  --bs-body-bg:#F6F3EE;
  --bs-body-color:#14161A;
  --bs-border-color:#E6E0D6;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease);}
a:hover{color:var(--primary);}
button,input,select,textarea{font:inherit;color:inherit;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{font-weight:800;line-height:1.25;letter-spacing:-0.01em;margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,243,238,.92);
  border-bottom:1px solid transparent;
  transition:height .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  height:80px;
  display:flex;align-items:center;
}
.site-header.scrolled{
  height:60px;
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -14px rgba(20,22,26,.4);
}
.hd-inner{display:flex;align-items:center;gap:24px;width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;
  box-shadow:0 6px 16px -8px rgba(225,84,58,.9);
  transition:transform .22s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-2px);}
.brand-text{font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--muted);
  white-space:nowrap;position:relative;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(20,22,26,.05);}
.nav-link.active{color:var(--primary);background:var(--primary-soft);font-weight:700;}
.hd-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;color:var(--muted);
  padding:6px 12px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--card);white-space:nowrap;
}
.status-badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  animation:breath 2.4s ease-in-out infinite;
}
@keyframes breath{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.35;transform:scale(.82);}}
.countdown{
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;
  color:var(--dark);padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(47,196,174,.10);border:1px solid rgba(47,196,174,.32);
  white-space:nowrap;
}
.countdown .colon{animation:blink 1s step-end infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.25;}}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--card);color:var(--text);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.burger:hover{border-color:var(--primary);color:var(--primary);}

/* buttons */
.btn-brand,.btn-ghost{
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .22s var(--ease);white-space:nowrap;
}
.btn-brand{background:var(--primary);color:#fff;box-shadow:0 10px 24px -14px rgba(225,84,58,.95);}
.btn-brand:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(192,65,42,.85);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;
  color:var(--primary);background:none;border:none;padding:6px 0;cursor:pointer;
}
.btn-text i{transition:transform .22s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.btn-brand:focus-visible,.btn-ghost:focus-visible,.btn-text:focus-visible,.burger:focus-visible,
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:1050;
  background:var(--bg);
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  padding:18px 24px 24px;
  visibility:hidden;
}
.drawer.open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--card);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow:auto;}
.drawer-nav a{
  font-size:18px;font-weight:600;padding:14px 4px;border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--primary);}
.drawer-foot{margin-top:18px;display:flex;flex-direction:column;gap:12px;}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;
  background-color:var(--dark);
  background-image:linear-gradient(105deg,rgba(15,47,40,.96) 0%,rgba(15,47,40,.86) 48%,rgba(15,47,40,.62) 100%),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:#fff;
  padding:64px 0 72px;
}
.page-head .crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.68);margin-bottom:22px;
}
.page-head .crumbs a{color:rgba(255,255,255,.68);}
.page-head .crumbs a:hover{color:var(--accent);}
.page-head .crumbs .sep{opacity:.5;}
.page-head .crumbs .cur{color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  color:var(--accent);text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}
.page-head h1{
  font-size:clamp(2rem,4.4vw,3.25rem);
  line-height:1.14;letter-spacing:-.02em;max-width:16em;
}
.page-head h1 .hl{color:var(--sand);}
.page-head .lead{
  margin-top:18px;max-width:44em;font-size:17px;
  color:rgba(255,255,255,.82);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.06);
}
.tag-badge .num{font-family:var(--mono);color:var(--accent);letter-spacing:.06em;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.sec-head .kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--primary);
  display:block;margin-bottom:12px;
}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);letter-spacing:-.015em;}
.sec-head p{margin-top:12px;color:var(--muted);max-width:46em;font-size:16px;}

/* intro */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:start;}
.intro-copy p{font-size:17.5px;color:#2b2f36;}
.intro-copy p strong{color:var(--text);font-weight:700;}
.stat-strip{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.stat-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;border-bottom:1px solid var(--line);
}
.stat-row:last-child{border-bottom:none;}
.stat-row .lab{font-size:14px;color:var(--muted);}
.stat-row .val{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--dark);letter-spacing:.03em;}
.stat-row .val small{font-size:12px;color:var(--muted);font-family:"Noto Sans SC",sans-serif;margin-left:4px;}

/* alternating rows */
.alt-row{
  display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:none;padding-top:0;}
.alt-row .alt-media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:var(--dark-soft);
}
.alt-row .alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.alt-row:hover .alt-media img{transform:scale(1.03);}
.alt-row.reverse .alt-media{order:2;}
.alt-row.reverse .alt-body{order:1;}
.alt-index{
  font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--primary);
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
}
.alt-index::after{content:"";flex:1 1 auto;height:1px;background:var(--line);max-width:90px;}
.alt-body h3{font-size:22px;margin-bottom:14px;}
.alt-body p{color:var(--muted);font-size:16.5px;}
.mini-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.mini-list li{display:flex;gap:10px;font-size:15px;color:#2b2f36;}
.mini-list li i{color:var(--accent);font-size:12px;margin-top:9px;}

/* rank table */
.rank-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}
.rank-head,.rank-line{
  display:grid;grid-template-columns:88px 1.1fr 1.4fr 1fr 120px;
  gap:16px;align-items:center;padding:18px 26px;
}
.rank-head{
  background:var(--dark);color:rgba(255,255,255,.72);
  font-size:12px;letter-spacing:.12em;font-family:var(--mono);
}
.rank-line{border-top:1px solid var(--line);transition:background .22s var(--ease);}
.rank-line:hover{background:var(--primary-soft);}
.rank-no{font-family:var(--mono);font-size:18px;font-weight:600;color:var(--sand);letter-spacing:.04em;}
.rank-line .tier{font-weight:700;font-size:16px;}
.rank-line .need,.rank-line .cycle{font-size:14.5px;color:var(--muted);}
.rank-line .cycle{font-family:var(--mono);letter-spacing:.04em;color:var(--dark);}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;
  padding:4px 11px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary-dark);font-weight:600;
  border:1px solid rgba(225,84,58,.22);
}
.chip.teal{background:rgba(47,196,174,.12);color:#127a6b;border-color:rgba(47,196,174,.3);}
.chip.sand{background:rgba(242,193,78,.18);color:#8a6410;border-color:rgba(242,193,78,.4);}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px;}
.steps::before{
  content:"";position:absolute;left:8%;right:8%;top:26px;height:1px;background:var(--line);
}
.step{position:relative;padding-top:0;}
.step .dot{
  width:52px;height:52px;border-radius:50%;background:var(--card);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:16px;color:var(--primary);font-weight:600;
  position:relative;z-index:1;transition:all .22s var(--ease);
}
.step:hover .dot{border-color:var(--primary);box-shadow:0 10px 22px -14px rgba(225,84,58,.9);}
.step h4{margin-top:20px;font-size:17px;}
.step p{margin-top:10px;font-size:15px;color:var(--muted);}

/* checklist */
.check-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 38px;box-shadow:var(--shadow);
}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 40px;}
.check-grid li{
  display:flex;gap:12px;font-size:16px;padding-bottom:16px;border-bottom:1px dashed var(--line);
}
.check-grid li i{color:var(--primary);font-size:13px;margin-top:9px;}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:none;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:16px;font-weight:700;color:var(--text);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-q .ic{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--muted);transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item.open .faq-q .ic{transform:rotate(180deg);color:var(--primary);border-color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 4px 24px;font-size:15px;color:var(--muted);max-width:64em;}

/* CTA + form */
.cta-block{
  background:var(--dark);color:#fff;border-radius:var(--r-block);
  padding:52px 56px;
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;
  box-shadow:var(--shadow);
}
.cta-block h2{font-size:clamp(1.5rem,2.4vw,2.1rem);color:#fff;}
.cta-block .cta-desc{color:rgba(255,255,255,.78);margin-top:16px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-block .btn-ghost{border-color:rgba(255,255,255,.3);color:#fff;}
.cta-block .btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.cta-points{margin-top:30px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:rgba(255,255,255,.8);}
.cta-points li i{color:var(--accent);font-size:12px;margin-top:9px;}
.form-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:28px;}
.form-card h3{font-size:17px;color:#fff;margin-bottom:6px;}
.form-card .form-note{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.82);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;padding:11px 14px;font-size:15px;
  transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.42);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(47,196,174,.18);
}
.field select option{color:#14161A;}
.field .err{display:none;font-size:13px;color:#FF8A72;margin-top:7px;}
.field.invalid input,.field.invalid select{border-color:var(--primary);}
.field.invalid .err{display:block;}
.form-card .btn-brand{width:100%;margin-top:6px;}
.form-tip{font-size:12px;color:rgba(255,255,255,.5);margin-top:14px;line-height:1.7;}

/* related categories */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:12px;
  transition:all .22s var(--ease);height:100%;
}
.rel-card:hover{border-color:rgba(225,84,58,.35);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.rel-card .rc-no{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--muted);}
.rel-card h4{font-size:17px;}
.rel-card:hover h4{color:var(--primary);}
.rel-card p{font-size:14.5px;color:var(--muted);margin:0;flex:1 1 auto;}
.rel-card .rc-more{font-size:13px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.rel-card:hover .rc-more i{transform:translateX(3px);}
.rel-card .rc-more i{transition:transform .22s var(--ease);}

/* footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:0;}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.ft-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:18px;}
.ft-about{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:32em;}
.ft-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:18px;font-weight:700;}
.ft-col ul{display:flex;flex-direction:column;gap:11px;}
.ft-col ul a{font-size:14.5px;color:rgba(255,255,255,.68);}
.ft-col ul a:hover{color:var(--accent);}
.ft-col p{font-size:14.5px;color:rgba(255,255,255,.68);margin-bottom:10px;}
.ft-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:26px;font-size:13px;color:rgba(255,255,255,.52);
}
.ft-bottom .mono{font-size:12.5px;}

/* breadcrumb inside body */
.mini-crumbs{font-size:13px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
.mini-crumbs a{color:var(--muted);}
.mini-crumbs a:hover{color:var(--primary);}
.mini-crumbs .cur{color:var(--text);}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}
.reveal.d2{transition-delay:.12s;}
.reveal.d3{transition-delay:.18s;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .main-nav{gap:0;}
  .nav-link{padding:8px 11px;font-size:14.5px;}
  .intro-grid{gap:40px;}
  .alt-row{gap:40px;}
}
@media (max-width:992px){
  .main-nav,.countdown,.hd-right .btn-brand{display:none;}
  .burger{display:inline-flex;}
  .section{padding:72px 0;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .alt-row{grid-template-columns:1fr;gap:26px;padding:36px 0;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-row.reverse .alt-body{order:0;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .steps::before{display:none;}
  .cta-block{grid-template-columns:1fr;gap:34px;padding:40px 32px;}
  .rank-head{display:none;}
  .rank-line{grid-template-columns:64px 1fr;grid-template-areas:"no tier" "no need" "no cycle";gap:6px 14px;padding:18px 20px;}
  .rank-line .rank-no{grid-area:no;align-self:start;padding-top:2px;}
  .rank-line .tier{grid-area:tier;}
  .rank-line .need{grid-area:need;}
  .rank-line .cycle{grid-area:cycle;}
  .check-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .ft-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:768px){
  body{font-size:16.5px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .page-head{padding:44px 0 56px;}
  .page-head .lead{font-size:16px;}
  .sec-head{margin-bottom:30px;}
  .stat-row{padding:15px 18px;}
  .stat-row .val{font-size:18px;}
  .check-panel{padding:26px 22px;}
  .cta-block{padding:32px 24px;border-radius:16px;}
  .form-card{padding:22px;}
  .faq-q{padding:18px 2px;font-size:15.5px;}
  .site-footer{padding:56px 0 28px;}
}
@media (max-width:576px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:15px;}
  .steps{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .ft-grid{grid-template-columns:1fr;}
  .ft-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .alt-body h3{font-size:19px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}