/* roulang page: index */
:root{
  --c-primary:#2F6B5E;
  --c-primary-deep:#1F4A41;
  --c-primary-soft:#7FC3B0;
  --c-accent:#BF5B2E;
  --c-sand:#E9E1D5;
  --c-bg:#F7F6F3;
  --c-panel:#FFFFFF;
  --c-dark:#12171A;
  --t1:#1B1F1E;
  --t2:#5C6663;
  --line:#E2DED6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-block:20px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(18,23,26,.04), 0 8px 24px -12px rgba(18,23,26,.10);
  --sh-hover:0 12px 32px -14px rgba(18,23,26,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
  --gutter:24px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-serif:"Songti SC","Noto Serif SC","Source Han Serif SC",serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
@media (min-width:1440px){ :root{ --maxw:1240px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; height:auto; }
a{ color:inherit; text-decoration:none; }
button,input,textarea,select{ font:inherit; color:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p,figure{ margin:0; }
h1,h2,h3,h4{ font-weight:700; }
:focus-visible{ outline:2px solid var(--c-primary); outline-offset:2px; border-radius:4px; }
::selection{ background:var(--c-sand); color:var(--t1); }

.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter); }

/* ---------- 排版 ---------- */
.h1,.hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
  letter-spacing:.02em;
  font-weight:700;
}
h2,.h2{ font-size:clamp(24px,2.4vw,34px); line-height:1.25; letter-spacing:.01em; }
h3,.h3{ font-size:20px; line-height:1.5; }
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-sand);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:16px;
}
.lead{ font-size:16px; color:var(--t2); line-height:1.9; }
.muted{ color:var(--t2); font-size:14px; line-height:1.7; }

/* ---------- 通用板块 ---------- */
.section{ padding:96px 0; }
.section--tight{ padding:64px 0; }
.section--sand{ background:var(--c-sand); }
.section-head{ max-width:760px; margin-bottom:48px; }
.section-head p{ margin-top:14px; color:var(--t2); font-size:16px; }
.section-head--split{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}

/* ---------- 顶部粘性区 ---------- */
.site-top{ position:sticky; top:0; z-index:200; }

.countdown-bar{
  background:var(--c-dark);
  color:#D9D4CB;
  height:44px;
  display:flex;
  align-items:center;
  font-size:13px;
}
.countdown-inner{ display:flex; align-items:center; gap:18px; width:100%; }
.cd-label{
  display:inline-flex; align-items:center; gap:8px;
  letter-spacing:.06em; font-size:12px; color:#9FA8A4; white-space:nowrap;
}
.cd-label i{ width:6px; height:6px; border-radius:50%; background:var(--c-primary-soft); display:inline-block; }
.cd-group{ display:flex; align-items:center; gap:10px; margin-left:auto; }
.cd-cell{ display:flex; align-items:baseline; gap:4px; }
.cd-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:600;
  color:#FFFFFF;
  min-width:2ch;
  text-align:center;
  transition:opacity .18s var(--ease);
}
.cd-unit{ font-size:11px; color:#8A938F; }
.cd-sep{ width:1px; height:14px; background:rgba(255,255,255,.14); }
.cd-link{
  color:var(--c-primary-soft);
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.cd-link:hover{ color:#FFFFFF; }
.cd-link i{ transition:transform .2s var(--ease); }
.cd-link:hover i{ transform:translateX(4px); }

/* ---------- 头部 ---------- */
.brand-row{
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease), background .25s var(--ease);
}
.brand-inner{
  display:flex;
  align-items:center;
  gap:16px;
  height:74px;
  transition:height .25s var(--ease);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--t1);
  white-space:nowrap;
}
.logo-mark{
  width:10px; height:10px; border-radius:3px;
  background:var(--c-primary);
  box-shadow:0 0 0 4px rgba(47,107,94,.12);
  flex:0 0 auto;
}
.brand-sub{
  font-size:13px; color:var(--t2);
  padding-left:16px;
  border-left:1px solid var(--line);
  white-space:nowrap;
}
.brand-actions{ margin-left:auto; display:flex; align-items:center; gap:12px; }
.brand-link{
  font-size:14px; color:var(--t2);
  display:inline-flex; align-items:center; gap:6px;
  transition:color .2s var(--ease);
}
.brand-link:hover{ color:var(--c-primary); }
.brand-link i{ transition:transform .2s var(--ease); }
.brand-link:hover i{ transform:translateX(3px); }

.channel-row{
  background:var(--c-bg);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease);
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:32px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  transition:height .25s var(--ease);
}
.channel-inner::-webkit-scrollbar{ display:none; }
.channel{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:8px 0;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.channel::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  height:2px; width:0;
  background:var(--c-primary);
  transition:width .22s var(--ease);
}
.channel:hover{ color:var(--c-primary); }
.channel:hover::after{ width:100%; }
.channel.is-active{ color:var(--t1); font-weight:600; }
.channel.is-active::after{ width:100%; }

.site-top.is-scrolled .brand-row{ background:#FFFFFF; border-bottom-color:var(--line); }
.site-top.is-scrolled .brand-inner{ height:62px; }
.site-top.is-scrolled .channel-row{ background:#FFFFFF; }
.site-top.is-scrolled .channel-inner{ height:44px; }

.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px; height:44px;
  align-items:center; justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#FFFFFF;
  cursor:pointer;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover{ border-color:var(--c-primary); color:var(--c-primary); }
.nav-toggle span{
  display:block; width:18px; height:2px; background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:currentColor;
}
.nav-toggle span::before{ top:-6px; }
.nav-toggle span::after{ top:6px; }

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  background:var(--c-dark);
  color:#EDEAE4;
  z-index:400;
  transform:translateY(-100%);
  transition:transform .32s var(--ease);
  display:flex;
  flex-direction:column;
  padding:24px;
  visibility:hidden;
}
.drawer.is-open{ transform:none; visibility:visible; }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; padding-bottom:20px; border-bottom:1px solid rgba(255,255,255,.12); }
.drawer-logo{ font-size:17px; font-weight:800; color:#fff; }
.drawer-close{
  width:44px; height:44px; border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);
  background:transparent; color:#fff;
  cursor:pointer; font-size:20px; line-height:1;
}
.drawer-nav{ padding-top:28px; display:flex; flex-direction:column; }
.drawer-nav a{
  font-family:var(--font-serif);
  font-size:24px;
  line-height:1.4;
  color:#EDEAE4;
  padding:16px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:color .2s var(--ease), padding-left .2s var(--ease);
}
.drawer-nav a:hover{ color:var(--c-primary-soft); padding-left:6px; }
.drawer-foot{ margin-top:auto; padding-top:24px; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}
.btn i{ transition:transform .22s var(--ease); }
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--c-primary); color:#FFFFFF; }
.btn-primary:hover{ background:var(--c-primary-deep); transform:translateY(-2px); box-shadow:0 10px 24px -12px rgba(31,74,65,.55); }
.btn-outline{ border-color:var(--c-primary); color:var(--c-primary); background:transparent; }
.btn-outline:hover{ background:var(--c-sand); transform:translateY(-2px); }
.btn-accent{ background:var(--c-accent); color:#FFFFFF; }
.btn-accent:hover{ background:#A54B22; transform:translateY(-2px); box-shadow:0 10px 24px -12px rgba(191,91,46,.55); }
.btn-ghost{ color:var(--c-primary); padding:0 4px; height:auto; }
.btn-ghost:hover i{ transform:translateX(4px); }
.btn-on-dark{ border-color:rgba(255,255,255,.3); color:#FFFFFF; }
.btn-on-dark:hover{ background:rgba(255,255,255,.1); }
.btn-sm{ height:38px; font-size:14px; padding:0 16px; }
.btn-block{ width:100%; }

/* ---------- 标签 ---------- */
.tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--c-sand);
  color:#4C5754;
  white-space:nowrap;
}
.tag--primary{ background:rgba(47,107,94,.12); color:var(--c-primary-deep); }
.tag--accent{ background:rgba(191,91,46,.12); color:var(--c-accent); }
.tag--ghost{ background:rgba(255,255,255,.12); color:#E4E0D8; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 88px;
  background:var(--c-bg);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
}
.hero-copy{ grid-column:1 / span 6; position:relative; z-index:2; }
.hero-kicker{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; letter-spacing:.08em; color:var(--c-primary);
  background:rgba(47,107,94,.09);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:20px;
}
.hero h1{ color:var(--t1); }
.hero h1 em{ font-style:normal; color:var(--c-primary); }
.hero-sub{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:var(--t2);
  max-width:520px;
}
.hero-actions{ margin-top:32px; display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.hero-chips{ margin-top:32px; display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; color:var(--t2);
  background:var(--c-panel);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.chip i{ color:var(--c-primary); font-size:11px; }
.hero-media{
  grid-column:6 / span 7;
  position:relative;
  margin-top:56px;
  border-radius:var(--r-block);
  overflow:hidden;
  box-shadow:var(--sh);
  aspect-ratio:16/10;
  background:var(--c-sand);
}
.hero-media img{ width:100%; height:100%; object-fit:cover; }
.hero-media::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(18,23,26,.08) 0%, rgba(18,23,26,.38) 100%);
}
.hero-float{
  position:absolute;
  left:20px; bottom:20px;
  z-index:2;
  background:rgba(255,255,255,.95);
  border-radius:12px;
  padding:14px 18px;
  box-shadow:0 10px 28px -14px rgba(18,23,26,.35);
  max-width:260px;
}
.hero-float strong{
  display:block;
  font-family:var(--font-mono);
  font-size:24px;
  line-height:1.2;
  color:var(--c-primary);
}
.hero-float span{ font-size:12px; color:var(--t2); }

/* ---------- 卡片基础 ---------- */
.card{
  background:var(--c-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  overflow:hidden;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-hover);
  border-color:var(--c-primary);
}
.card-pad{ padding:24px; }

/* ---------- 要点卡（非对称栅格） ---------- */
.promo-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.promo-main{ grid-column:1 / span 6; display:flex; flex-direction:column; }
.promo-side{ grid-column:7 / span 6; display:grid; grid-template-rows:1fr 1fr; gap:24px; }
.promo-media{ aspect-ratio:16/10; overflow:hidden; background:var(--c-sand); }
.promo-media img{ width:100%; height:100%; object-fit:cover; transition:transform .45s var(--ease); }
.promo-main:hover .promo-media img{ transform:scale(1.03); }
.promo-body{ padding:28px; display:flex; flex-direction:column; gap:14px; flex:1; }
.num{
  font-family:var(--font-mono);
  font-size:40px;
  line-height:1;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--c-primary);
  opacity:.3;
}
.promo-body h3{ font-size:21px; }
.promo-body p{ color:var(--t2); font-size:15px; }
.point-list{ display:flex; flex-direction:column; gap:10px; margin-top:4px; }
.point-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--t2);
  line-height:1.8;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0; top:11px;
  width:6px; height:6px;
  border-radius:2px;
  background:var(--c-primary);
  opacity:.55;
}
.promo-side .card{ display:flex; flex-direction:column; }
.promo-side .card-pad{ display:flex; gap:18px; align-items:flex-start; padding:26px; }
.promo-side .num{ font-size:32px; flex:0 0 auto; }

/* ---------- 图墙 ---------- */
.gallery{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.g-item{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-img);
  height:300px;
  background:var(--c-sand);
}
.g-1{ grid-column:span 3; height:320px; }
.g-2{ grid-column:span 4; height:320px; }
.g-3{ grid-column:span 5; height:320px; }
.g-4{ grid-column:span 5; height:280px; }
.g-5{ grid-column:span 7; height:280px; }
.g-item img{
  width:100%; height:100%;
  object-fit:cover;
  transition:transform .45s var(--ease), filter .3s var(--ease);
}
.g-item::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(18,23,26,0) 40%, rgba(18,23,26,.72) 100%);
  transition:opacity .3s var(--ease);
  opacity:.85;
}
.g-item:hover img{ transform:scale(1.03); }
.g-item:hover::after{ opacity:1; }
.g-cap{
  position:absolute;
  left:0; right:0; bottom:0;
  z-index:2;
  padding:18px 20px;
  color:#FFFFFF;
  transform:translateY(6px);
  transition:transform .28s var(--ease);
}
.g-item:hover .g-cap{ transform:none; }
.g-cap strong{ display:block; font-size:16px; font-weight:700; }
.g-cap span{ font-size:12px; color:rgba(255,255,255,.78); }
.g-fill{
  display:flex; align-items:center; justify-content:center;
  background:var(--c-sand);
  color:#7A827F;
  font-size:13px;
  border-radius:var(--r-img);
}

/* ---------- 数据带 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  background:var(--c-sand);
  border-radius:var(--r-block);
  padding:36px 32px;
}
.metric strong{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(26px,3vw,36px);
  line-height:1.2;
  color:var(--c-primary-deep);
  letter-spacing:.01em;
}
.metric span{ display:block; margin-top:6px; font-size:13px; color:#5F6A66; }

/* ---------- CTA 深色带 ---------- */
.cta-band{
  background:var(--c-dark);
  border-radius:var(--r-block);
  padding:56px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  color:#E6E2DA;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-80px; top:-80px;
  width:280px; height:280px;
  border-radius:50%;
  background:rgba(47,107,94,.22);
  pointer-events:none;
}
.cta-copy{ position:relative; z-index:1; }
.cta-copy h2{ color:#FFFFFF; }
.cta-copy p{ margin-top:16px; color:#A9B2AE; font-size:15px; line-height:1.9; }
.cta-points{ margin-top:28px; display:flex; flex-direction:column; gap:12px; }
.cta-points li{
  display:flex; align-items:flex-start; gap:10px;
  font-size:14px; color:#B9C2BE;
}
.cta-points i{ color:var(--c-primary-soft); margin-top:6px; font-size:11px; }
.cta-form{ position:relative; z-index:1; }
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom:18px; }
.field label{ font-size:13px; letter-spacing:.06em; color:#98A19D; }
.field input,
.field textarea{
  width:100%;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-btn);
  padding:12px 14px;
  color:#FFFFFF;
  font-size:15px;
  min-height:46px;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.field textarea{ min-height:100px; resize:vertical; line-height:1.7; }
.field input::placeholder,
.field textarea::placeholder{ color:#7E8884; }
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--c-primary-soft);
  background:rgba(255,255,255,.09);
}
.field.has-error input,
.field.has-error textarea{ border-color:var(--c-accent); }
.form-note{ margin-top:14px; font-size:12px; color:#8A938F; line-height:1.7; }
.form-msg{
  margin-top:14px;
  font-size:13px;
  color:var(--c-primary-soft);
  min-height:20px;
}

/* ---------- FAQ ---------- */
.faq{ border-top:1px solid var(--line); }
.faq details{ border-bottom:1px solid var(--line); }
.faq summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 0;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--t1);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary:hover{ color:var(--c-primary); }
.faq details[open] summary{ color:var(--c-primary); }
.faq .chev{
  flex:0 0 auto;
  color:var(--t2);
  transition:transform .26s var(--ease), color .2s var(--ease);
}
.faq details[open] .chev{ transform:rotate(90deg); color:var(--c-primary); }
.faq-body{
  padding:0 0 26px;
  max-width:840px;
  font-size:15px;
  color:var(--t2);
  line-height:1.9;
}

/* ---------- 最新信息 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{ display:flex; flex-direction:column; height:100%; }
.news-thumb{ aspect-ratio:16/10; overflow:hidden; background:var(--c-sand); }
.news-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .45s var(--ease); }
.news-card:hover .news-thumb img{ transform:scale(1.03); }
.news-body{ padding:22px; display:flex; flex-direction:column; gap:12px; flex:1; }
.news-title{
  font-size:17px;
  font-weight:700;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s var(--ease);
}
.news-card:hover .news-title{ color:var(--c-primary); }
.news-excerpt{
  font-size:14px;
  color:var(--t2);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t2);
}
.news-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-primary);
  font-weight:600;
}
.news-more i{ transition:transform .2s var(--ease); }
.news-card:hover .news-more i{ transform:translateX(4px); }

.empty{
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  background:var(--c-panel);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  color:var(--t2);
  text-align:center;
  padding:32px;
}
.empty-icon{
  width:52px; height:52px;
  border-radius:50%;
  background:var(--c-sand);
  display:flex; align-items:center; justify-content:center;
  color:var(--c-primary);
  font-size:20px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);
  color:#A9B2AE;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1fr;
  gap:40px;
  padding:72px 0 48px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:800;
  color:#FFFFFF;
  margin-bottom:16px;
}
.footer-brand .logo-mark{ background:var(--c-primary-soft); box-shadow:none; }
.footer-col h4{
  color:#FFFFFF;
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:#A9B2AE;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.footer-col a:hover{ color:var(--c-primary-soft); }
.footer-desc{ font-size:14px; line-height:1.9; color:#8E9793; max-width:320px; }
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:26px 0 34px;
  font-size:13px;
  color:#7E8884;
}
.footer-bottom a{ color:#9AA39F; transition:color .2s var(--ease); }
.footer-bottom a:hover{ color:var(--c-primary-soft); }

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{ padding:72px 0; }
  .hero{ padding:56px 0 72px; }
  .hero-grid{ grid-template-columns:repeat(12,1fr); }
  .hero-copy{ grid-column:1 / span 12; }
  .hero-media{ grid-column:1 / span 12; margin-top:36px; aspect-ratio:16/10; }
  .promo-main{ grid-column:1 / span 12; }
  .promo-side{ grid-column:1 / span 12; grid-template-rows:auto auto; }
  .g-1,.g-2,.g-3,.g-4,.g-5{ grid-column:span 6; height:240px; }
  .news-grid{ grid-template-columns:repeat(2,1fr); }
  .cta-band{ grid-template-columns:1fr; gap:40px; padding:44px; }
  .footer-grid{ grid-template-columns:repeat(2,1fr); gap:32px; padding:56px 0 40px; }
  .metrics{ grid-template-columns:repeat(2,1fr); gap:20px; padding:28px 24px; }
}

@media (max-width:768px){
  :root{ --gutter:20px; }
  body{ font-size:15px; }
  .section{ padding:56px 0; }
  .section-head{ margin-bottom:32px; }
  .channel-row{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .brand-sub{ display:none; }
  .brand-inner{ height:64px; }
  .brand-link{ display:none; }
  .hero{ padding:44px 0 56px; }
  .hero-sub{ font-size:16px; }
  .hero-actions .btn{ width:100%; }
  .hero-actions{ gap:10px; }
  .hero-media{ aspect-ratio:4/3; margin-top:28px; }
  .cd-group .cd-cell[data-hide-sm]{ display:none; }
  .cd-group .cd-sep[data-hide-sm]{ display:none; }
  .countdown-bar{ height:40px; }
  .cd-label span{ display:none; }
  .promo-body{ padding:22px; }
  .promo-side .card-pad{ padding:22px; }
  .g-1,.g-2,.g-3,.g-4,.g-5{ grid-column:span 12; height:220px; }
  .news-grid{ grid-template-columns:1fr; }
  .cta-band{ padding:32px 22px; border-radius:16px; }
  .metrics{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr; gap:8px; padding:44px 0 24px; }
  .footer-col{ border-bottom:1px solid rgba(255,255,255,.08); }
  .footer-col h4{ margin:0; padding:16px 0; cursor:default; }
  .footer-col a{ padding:8px 0; }
  .footer-brand{ margin-bottom:12px; }
  .footer-desc{ margin-bottom:12px; }
  .faq summary{ font-size:16px; padding:20px 0; }
  .btn{ min-height:48px; }
  .btn-sm{ min-height:40px; }
}

@media (max-width:520px){
  .metrics{ grid-template-columns:1fr; }
  .hero-float{ left:12px; right:12px; bottom:12px; max-width:none; }
  .g-cap{ padding:14px 16px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; gap:8px; }
}

@media (max-width:380px){
  body{ font-size:14px; }
  .logo{ font-size:17px; }
  .hero h1{ font-size:26px; }
  h2,.h2{ font-size:22px; }
  .btn{ width:100%; }
}

/* roulang page: article */
:root{
  --c-primary:#2F6B5E;
  --c-primary-deep:#1F4A41;
  --c-primary-soft:#E4EEEB;
  --c-accent:#BF5B2E;
  --c-sand:#E9E1D5;
  --c-bg:#F7F6F3;
  --c-panel:#FFFFFF;
  --c-dark:#12171A;
  --c-text:#1B1F1E;
  --c-muted:#5C6663;
  --c-line:#E2DED6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-dark:20px;
  --sh-1:0 1px 2px rgba(18,23,26,.04),0 8px 24px -12px rgba(18,23,26,.10);
  --sh-2:0 12px 32px -14px rgba(18,23,26,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms var(--ease);
  --w:1200px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-mono:"Inter","JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-text);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t)}
a:hover{color:var(--c-primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--w:1240px}}

/* ============ 顶部品牌行 ============ */
.topbar{
  background:var(--c-panel);
  border-bottom:1px solid var(--c-line);
}
.topbar-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;left:9px;top:11px;width:16px;height:12px;
  border:2px solid #fff;border-radius:0 0 8px 8px;border-top:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:12px;color:var(--c-muted);letter-spacing:.08em}
.topbar-note{
  font-size:13px;color:var(--c-muted);letter-spacing:.04em;
  padding-left:20px;border-left:1px solid var(--c-line);
}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-muted);border:1px solid transparent;
}
.icon-btn:hover{color:var(--c-primary);background:var(--c-sand);border-color:var(--c-line)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--t),background-color var(--t),border-color var(--t),color var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-sand);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#a94e26;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{color:var(--c-primary);padding:0 4px}
.btn-ghost i{transition:transform var(--t)}
.btn-ghost:hover i{transform:translateX(4px)}
.nav-toggle{display:none}

/* ============ 频道行 ============ */
.channel-row{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.channel-row.is-stuck{box-shadow:0 6px 18px -14px rgba(18,23,26,.4)}
.channel-inner{
  display:flex;align-items:center;gap:6px;
  overflow-x:auto;scrollbar-width:none;
  min-height:54px;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;
  padding:15px 14px;font-size:15px;color:var(--c-muted);
  white-space:nowrap;letter-spacing:.02em;
}
.channel::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.channel:hover{color:var(--c-primary)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--c-text);font-weight:600}
.channel.is-active::after{transform:scaleX(1)}
.channel.is-active{background:linear-gradient(to top,var(--c-sand) 0 3px,transparent 3px)}

/* ============ 抽屉导航 ============ */
.drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--c-dark);color:#fff;
  display:flex;flex-direction:column;
  padding:24px;transform:translateX(100%);
  transition:transform 260ms var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer .brand-name{color:#fff}
.drawer .brand-sub{color:rgba(255,255,255,.6)}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;border:1px solid rgba(255,255,255,.22);
}
.drawer-links{margin:36px 0 24px;display:flex;flex-direction:column}
.drawer-links a{
  color:#fff;font-size:20px;font-weight:600;letter-spacing:.04em;
  padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a span{font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.1em;font-family:var(--font-mono)}
.drawer-links a:hover,.drawer-links a.is-active{color:#8FD3C1}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-foot .btn{width:100%;height:48px}
.drawer-foot p{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5);line-height:1.7}
body.no-scroll{overflow:hidden}

/* ============ 文章头部 ============ */
.article-head{
  background:var(--c-panel);
  border-bottom:1px solid var(--c-line);
  padding:28px 0 44px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb i{font-size:10px;opacity:.6}
.breadcrumb .current{color:var(--c-text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:end}
.cat-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-sand);color:var(--c-primary-deep);
  border-radius:var(--r-pill);padding:5px 14px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
h1.article-title{
  font-family:var(--font-serif);
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;letter-spacing:.02em;
  margin:18px 0 0;max-width:820px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:22px;font-size:13px;color:var(--c-muted);
}
.meta-row .dot{opacity:.5}
.meta-row a{color:var(--c-primary);border-bottom:1px solid transparent}
.meta-row a:hover{border-bottom-color:var(--c-primary)}
.head-figure{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-sand);
}
.head-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ============ 文章正文 ============ */
.article-main{padding:64px 0 80px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article-content{
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:44px 48px;
  max-width:820px;
  font-size:16px;line-height:1.9;color:#232826;
  overflow-wrap:break-word;
}
.article-content>*:first-child{margin-top:0}
.article-content p{margin:0 0 1.6em}
.article-content h2{
  position:relative;
  font-family:var(--font-serif);
  font-size:clamp(20px,2vw,26px);
  line-height:1.4;letter-spacing:.02em;
  margin:40px 0 16px;padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.35em;bottom:.2em;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.article-content h3{font-size:19px;font-weight:700;margin:30px 0 12px;color:var(--c-primary-deep)}
.article-content h4{font-size:17px;font-weight:700;margin:24px 0 10px}
.article-content ul,.article-content ol{margin:0 0 1.6em;padding-left:1.3em}
.article-content ul li{list-style:none;position:relative;padding-left:16px;margin-bottom:.6em}
.article-content ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--c-primary);
}
.article-content ol{list-style:decimal}
.article-content ol li{margin-bottom:.6em;padding-left:4px}
.article-content ol li::marker{color:var(--c-primary);font-family:var(--font-mono);font-weight:600}
.article-content blockquote{
  margin:0 0 1.6em;padding:18px 22px;
  background:var(--c-sand);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-img) var(--r-img) 0;color:#3A423F;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-img);margin:8px 0 12px;width:100%}
.article-content figure{margin:0 0 1.6em}
.article-content figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-content a{color:var(--c-primary);border-bottom:1px solid rgba(47,107,94,.35)}
.article-content a:hover{border-bottom-color:var(--c-primary)}
.article-content table{
  width:100%;border-collapse:collapse;margin:0 0 1.6em;
  font-size:14px;border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden;
}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-content th{background:var(--c-primary-soft);font-weight:600;color:var(--c-primary-deep)}
.article-content tbody tr:nth-child(even){background:rgba(233,225,213,.35)}
.article-content tbody tr:last-child td{border-bottom:0}
.article-content code{
  font-family:var(--font-mono);font-size:14px;background:var(--c-sand);
  padding:2px 6px;border-radius:6px;
}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--c-primary);opacity:.7}
.empty-state p{font-size:15px;color:var(--c-muted);margin:0}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:80px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;
}
.side-card h3{font-size:15px;letter-spacing:.06em;margin-bottom:14px;color:var(--c-primary-deep)}
.side-list li{border-bottom:1px dashed var(--c-line);padding:11px 0}
.side-list li:last-child{border-bottom:0}
.side-list a{font-size:14px;color:var(--c-muted);display:flex;gap:10px;align-items:baseline}
.side-list a:hover{color:var(--c-primary)}
.side-list .idx{font-family:var(--font-mono);font-size:12px;color:var(--c-primary);opacity:.8}
.side-cta{background:var(--c-dark);border:0;color:#fff}
.side-cta h3{color:#fff}
.side-cta p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ============ 标签 / 上下篇 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--c-sand);
  color:var(--c-primary-deep);font-size:13px;letter-spacing:.02em;
  transition:background-color var(--t),color var(--t);
}
.tag:hover{background:var(--c-primary);color:#fff}
.post-nav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;
  margin-top:36px;
}
.post-nav a{
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:18px 20px;
  display:flex;flex-direction:column;gap:6px;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.post-nav a:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.post-nav .label{font-size:12px;letter-spacing:.1em;color:var(--c-muted)}
.post-nav .title{font-size:15px;font-weight:600;line-height:1.6}

/* ============ 相关推荐 ============ */
.section{padding:72px 0}
.section-sand{background:var(--c-sand)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.2vw,30px);letter-spacing:.02em;line-height:1.3}
.section-head p{font-size:14px;color:var(--c-muted);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary)}
.post-card .thumb{overflow:hidden;background:var(--c-sand)}
.post-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 320ms var(--ease)}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-size:17px;line-height:1.55;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:14px;color:var(--c-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .foot{margin-top:auto;padding-top:12px;border-top:1px dashed var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.post-card .foot a{color:var(--c-primary);font-weight:600}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--c-dark);color:#fff;border-radius:var(--r-dark);
  padding:48px;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);letter-spacing:.02em;line-height:1.35}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:14px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-band .panel-note{
  border-left:1px solid rgba(255,255,255,.18);padding-left:28px;
  font-size:14px;color:rgba(255,255,255,.7);line-height:1.9;
}
.cta-band .panel-note strong{color:#fff;display:block;font-size:18px;margin-bottom:8px;letter-spacing:.02em}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-list details{border-bottom:1px solid var(--c-line)}
.faq-list summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:16px;font-weight:600;
  transition:color var(--t),background-color var(--t);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary i{font-size:13px;color:var(--c-primary);transition:transform var(--t)}
.faq-list details[open] summary{color:var(--c-primary)}
.faq-list details[open] summary i{transform:rotate(90deg)}
.faq-list .answer{padding:0 4px 22px;font-size:15px;color:var(--c-muted);line-height:1.9;max-width:820px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em}
.footer-brand .logo-mark{width:28px;height:28px;border-radius:8px}
.footer-brand .logo-mark::after{left:7px;top:9px;width:14px;height:10px}
.footer-desc{font-size:14px;line-height:1.85;margin-top:16px;max-width:340px;color:rgba(255,255,255,.6)}
.footer-col h4{color:#fff;font-size:15px;letter-spacing:.06em;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.66);padding:6px 0}
.footer-col a:hover{color:#8FD3C1}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:24px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:#8FD3C1}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .head-grid{grid-template-columns:1fr;gap:28px;align-items:start}
  .head-figure{max-width:520px}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 260px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:40px}
  .cta-band .panel-note{border-left:0;border-top:1px solid rgba(255,255,255,.18);padding:24px 0 0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .topbar-note{display:none}
  .topbar-actions .btn{display:none}
  .nav-toggle{
    display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;
    border:1px solid var(--c-line);border-radius:var(--r-btn);color:var(--c-text);
  }
  .channel-row{display:none}
  .article-head{padding:20px 0 32px}
  .breadcrumb{margin-bottom:18px}
  .article-main{padding:40px 0 56px}
  .article-content{padding:26px 20px;border-radius:var(--r-card)}
  .post-nav{grid-template-columns:1fr}
  .section{padding:52px 0}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  h1.article-title{font-size:26px}
  .meta-row{font-size:12.5px;gap:8px}
  .article-content{font-size:15.5px}
  .side-col{flex-direction:column}
  .head-figure{max-width:100%}
}
@media (max-width:380px){
  .brand-sub{display:none}
  .btn{width:100%}
  .meta-row .dot{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --c-primary:#2F6B5E;
  --c-primary-deep:#1F4A41;
  --c-primary-soft:#E4EEE9;
  --c-accent:#BF5B2E;
  --c-sand:#E9E1D5;
  --c-bg:#F7F6F3;
  --c-panel:#FFFFFF;
  --c-dark:#12171A;
  --c-ink:#1B1F1E;
  --c-muted:#5C6663;
  --c-line:#E2DED6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-block:20px;
  --sh-1:0 1px 2px rgba(18,23,26,.04), 0 8px 24px -12px rgba(18,23,26,.10);
  --sh-2:0 12px 32px -14px rgba(18,23,26,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"Inter","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:130px}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-sand);color:var(--c-ink)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:relative;z-index:80;background:var(--c-bg)}
.brand-row{border-bottom:1px solid transparent}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:var(--c-ink)}
.logo:hover{color:var(--c-primary)}
.logo-mark{
  position:relative;width:28px;height:28px;border-radius:9px;background:var(--c-primary);display:inline-block;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;left:6px;top:10px;width:16px;height:9px;border-radius:8px 8px 5px 5px;background:var(--c-bg);
}
.logo-mark::before{
  content:"";position:absolute;left:10px;top:6px;width:9px;height:9px;border-radius:50%;background:var(--c-bg);
}
.brand-sub{font-size:13px;color:var(--c-muted);letter-spacing:.06em}
.brand-actions{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--c-line);display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-muted);background:var(--c-panel);transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-1px)}
.icon-btn svg{width:17px;height:17px}
.lang-chip{font-size:13px;color:var(--c-muted);padding:6px 12px;border-radius:var(--r-pill);background:var(--c-sand)}
.search-pop{display:none;padding:0 24px 16px}
.search-pop.is-open{display:block}
.search-pop input{
  width:100%;max-width:520px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-panel);
  padding:0 16px;font-size:14px;outline:none;transition:border-color .2s var(--ease);
}
.search-pop input::placeholder{color:var(--c-muted)}
.search-pop input:focus{border-color:var(--c-primary)}

/* ---------- 频道导航 ---------- */
.channel-row{
  position:sticky;top:0;z-index:70;background:rgba(247,246,243,.94);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.channel-row.is-stuck{background:rgba(255,255,255,.97);box-shadow:0 6px 18px -14px rgba(18,23,26,.35)}
.channel-inner{display:flex;align-items:center;gap:30px;overflow-x:auto;scrollbar-width:none;padding-top:2px;padding-bottom:2px}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;display:inline-block;padding:14px 0;font-size:15px;color:var(--c-muted);white-space:nowrap;
  transition:color .22s var(--ease);
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:9px;height:2px;background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.channel:hover{color:var(--c-primary)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--c-ink);font-weight:600}
.channel.is-active::after{transform:scaleX(1)}
.channel-row.is-stuck .channel{padding:11px 0}
.channel-row.is-stuck .channel::after{bottom:6px}
.menu-btn{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);color:var(--c-ink);background:var(--c-panel);align-items:center;justify-content:center}
.menu-btn svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-sand);transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:#A94E25;border-color:#A94E25;transform:translateY(-2px)}
.btn-ghost{color:var(--c-primary);padding:0 6px}
.btn-ghost svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-primary);
  background:var(--c-sand);padding:7px 15px;border-radius:var(--r-pill);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.18;letter-spacing:.02em;font-weight:700;
  margin:20px 0 18px;max-width:15em;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--c-muted);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px}
.stat-chip{
  display:inline-flex;align-items:baseline;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  background:var(--c-panel);border:1px solid var(--c-line);font-size:13.5px;color:var(--c-muted);
}
.stat-chip b{font-family:var(--font-mono);font-size:16px;color:var(--c-primary);font-weight:600}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-block);background:var(--c-sand);
  box-shadow:var(--sh-1);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-block);
  background:linear-gradient(200deg,rgba(18,23,26,.05),rgba(18,23,26,.28));pointer-events:none;
}
.hero-badge{
  position:absolute;left:20px;bottom:20px;right:20px;z-index:2;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.94);border-radius:var(--r-pill);padding:11px 18px;font-size:13.5px;color:var(--c-ink);
  box-shadow:var(--sh-1);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}

/* ---------- 主体文档布局 ---------- */
.section{padding:0 0 96px}
.doc-grid{display:grid;grid-template-columns:236px 1fr;gap:52px;align-items:start}
.toc{position:sticky;top:96px}
.toc-title{font-size:12px;letter-spacing:.14em;color:var(--c-muted);margin-bottom:14px}
.toc-link{
  display:block;padding:9px 0 9px 16px;font-size:14px;color:var(--c-muted);border-left:2px solid var(--c-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.toc-link:hover{color:var(--c-primary);padding-left:20px}
.toc-link.is-current{color:var(--c-ink);font-weight:600;border-left-color:var(--c-primary)}

.doc-block{margin-bottom:64px;scroll-margin-top:120px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.sec-head h2{
  position:relative;font-size:clamp(22px,2.2vw,30px);line-height:1.3;letter-spacing:.01em;padding-left:16px;font-weight:700;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;background:var(--c-primary);
}
.sec-head p{font-size:14px;color:var(--c-muted);max-width:460px}
.lead{font-size:16px;color:var(--c-muted);margin:-8px 0 26px;max-width:720px}

/* ---------- 卡片 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CBD8D3}
.card .num{
  font-family:var(--font-mono);font-size:26px;font-weight:600;color:rgba(47,107,94,.45);letter-spacing:.02em;display:block;margin-bottom:12px;
}
.card h3{font-size:19px;line-height:1.5;margin-bottom:10px;font-weight:600}
.card p{font-size:15px;color:var(--c-muted);line-height:1.85}
.card .tag-row{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;font-size:12.5px;letter-spacing:.04em;color:var(--c-ink);background:var(--c-sand);
  border-radius:var(--r-pill);padding:5px 12px;
}
.tag-line{display:inline-block;font-size:12.5px;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:5px 12px}

/* ---------- 步骤 ---------- */
.steps{counter-reset:step;margin-top:6px}
.step{
  position:relative;counter-increment:step;padding:2px 0 30px 56px;border-left:1px solid var(--c-line);
}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step::before{
  content:counter(step,decimal-leading-zero);position:absolute;left:-19px;top:0;width:38px;height:38px;border-radius:50%;
  background:var(--c-panel);border:1px solid var(--c-line);color:var(--c-primary);font-family:var(--font-mono);font-size:13px;
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{font-size:15px;color:var(--c-muted);max-width:680px}
.step-dur{display:inline-block;margin-top:10px;font-size:12.5px;font-family:var(--font-mono);color:var(--c-accent);letter-spacing:.04em}

/* ---------- 提示处理 ---------- */
.issue{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--c-line)}
.issue:last-child{border-bottom:0;padding-bottom:0}
.issue .idx{font-family:var(--font-mono);font-size:14px;color:var(--c-accent);padding-top:3px}
.issue h3{font-size:17px;font-weight:600;margin-bottom:6px}
.issue p{font-size:15px;color:var(--c-muted);max-width:700px}

/* ---------- 图墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.wall-item{position:relative;overflow:hidden;border-radius:var(--r-img);background:var(--c-sand)}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.wall-item:hover img{transform:scale(1.03)}
.wall-item .cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;color:#fff;font-size:14px;
  background:linear-gradient(0deg,rgba(18,23,26,.72),rgba(18,23,26,0));
}
.w-5{grid-column:span 5}
.w-4{grid-column:span 4}
.w-3{grid-column:span 3}
.ratio-45{aspect-ratio:4/5}
.ratio-11{aspect-ratio:1/1}
.ratio-169{aspect-ratio:16/9}
.sand-block{
  grid-column:span 3;border-radius:var(--r-img);background:var(--c-sand);padding:22px;display:flex;flex-direction:column;justify-content:space-between;min-height:180px;
}
.sand-block strong{font-family:var(--font-mono);font-size:24px;color:var(--c-primary);display:block;margin-bottom:6px}
.sand-block span{font-size:14px;color:var(--c-muted)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--c-line)}
.faq details{border-bottom:1px solid var(--c-line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-primary)}
.faq summary .arrow{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--c-sand);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq details[open] summary{color:var(--c-primary)}
.faq details[open] summary .arrow{transform:rotate(90deg);background:var(--c-primary-soft)}
.faq .answer{padding:0 44px 22px 0;font-size:15px;color:var(--c-muted);max-width:720px}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-dark);color:#EDEFEE;border-radius:var(--r-block);padding:46px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;scroll-margin-top:120px;
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);line-height:1.32;color:#fff;margin-bottom:14px;font-weight:700}
.cta-band p{font-size:15px;color:#A7B0AC;max-width:440px}
.cta-list{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-list li{font-size:14px;color:#9BA5A1;padding-left:18px;position:relative}
.cta-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-accent)}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:#9BA5A1;margin-bottom:8px;letter-spacing:.04em}
.form-field input,.form-field textarea{
  width:100%;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
  color:#fff;padding:12px 14px;font-size:15px;outline:none;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.7}
.form-field input::placeholder,.form-field textarea::placeholder{color:#6F7975}
.form-field input:focus,.form-field textarea:focus{border-color:var(--c-accent);background:rgba(255,255,255,.08)}
.form-note{font-size:12.5px;color:#7D8783;margin-top:12px}
.form-done{
  border:1px solid rgba(127,187,169,.45);background:rgba(47,107,94,.18);color:#D7E6E0;border-radius:var(--r-card);
  padding:22px;font-size:15px;line-height:1.85;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ---------- 相关阅读横滑 ---------- */
.rail{display:flex;gap:20px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.rail-item{
  flex:0 0 320px;scroll-snap-align:start;background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rail-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.rail-item img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-sand)}
.rail-body{padding:20px}
.rail-body h3{font-size:17px;line-height:1.55;margin:10px 0 8px;font-weight:600}
.rail-body p{font-size:14px;color:var(--c-muted);line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#B9C0BD;padding:64px 0 28px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .logo-mark{width:24px;height:24px;border-radius:8px;background:#3E8A78}
.footer-brand .logo-mark::after{left:5px;top:9px;width:14px;height:8px;background:var(--c-dark)}
.footer-brand .logo-mark::before{left:9px;top:5px;width:8px;height:8px;background:var(--c-dark)}
.footer-desc{font-size:13.5px;line-height:1.9;color:#8E9895;margin:0;max-width:340px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.08em;margin:0 0 16px;font-weight:600}
.footer-col a{display:block;font-size:14px;color:#9BA5A1;padding:6px 0}
.footer-col a:hover{color:#7FBBA9}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:46px;padding-top:20px;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#7D8783;
}
.footer-bottom a{color:#9BA5A1}
.footer-bottom a:hover{color:#7FBBA9}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);color:#fff;padding:24px;
  transform:translateY(-100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:#fff}
.drawer-brand .logo-mark{background:#3E8A78}
.drawer-brand .logo-mark::after,.drawer-brand .logo-mark::before{background:var(--c-dark)}
.drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);color:#fff;display:flex;align-items:center;justify-content:center}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{font-size:19px;padding:14px 0;color:#D6DCD9;border-bottom:1px solid rgba(255,255,255,.08)}
.drawer-nav a.is-active{color:#7FBBA9;font-weight:600}
.drawer-cta{margin-top:20px}
.drawer-cta .btn{width:100%;height:48px}
body.no-scroll{overflow:hidden}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .doc-grid{grid-template-columns:1fr;gap:28px}
  .toc{position:static;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
  .toc::-webkit-scrollbar{display:none}
  .toc-title{display:none}
  .toc-link{
    white-space:nowrap;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:9px 16px;background:var(--c-panel);
    font-size:13.5px;
  }
  .toc-link:hover{padding-left:16px}
  .toc-link.is-current{border-color:var(--c-primary);background:var(--c-primary-soft)}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .wall{grid-template-columns:repeat(6,1fr)}
  .w-5,.w-4,.w-3,.sand-block{grid-column:span 3}
  .ratio-45{aspect-ratio:4/3}
}
@media (max-width:768px){
  .brand-sub,.lang-chip{display:none}
  .menu-btn{display:inline-flex}
  .brand-actions .btn-primary{display:none}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .wall{grid-template-columns:1fr;gap:16px}
  .w-5,.w-4,.w-3,.sand-block{grid-column:span 1}
  .ratio-45,.ratio-11,.ratio-169{aspect-ratio:4/3}
  .section{padding-bottom:60px}
  .doc-block{margin-bottom:48px}
  .card{padding:22px}
  .cta-band{padding:28px;border-radius:16px}
  .hero-media img{aspect-ratio:4/3}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-col a{padding:5px 0}
  .rail-item{flex:0 0 84%}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-sub{font-size:15.5px}
  .btn{width:100%}
  .hero-cta .btn,.cta-actions .btn{width:100%}
  .stat-chip{width:100%;justify-content:space-between}
  .step{padding-left:48px}
  .faq summary{font-size:16px}
  .logo{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
*,*::before,*::after{box-sizing:border-box}
:root{
  --c-primary:#2F6B5E;
  --c-primary-deep:#1F4A41;
  --c-primary-soft:#E4EEE9;
  --c-accent:#BF5B2E;
  --c-sand:#E9E1D5;
  --c-bg:#F7F6F3;
  --c-panel:#FFFFFF;
  --c-dark:#12171A;
  --c-text:#1B1F1E;
  --c-muted:#5C6663;
  --c-line:#E2DED6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-dark:20px;
  --sh-1:0 1px 2px rgba(18,23,26,.04),0 8px 24px -12px rgba(18,23,26,.10);
  --sh-2:0 12px 32px -14px rgba(18,23,26,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gap:24px;
  --sec:96px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-mono:"Inter","JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;text-underline-offset:4px}
a:hover{color:var(--c-primary)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.15em}
h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
  letter-spacing:.02em;
  font-weight:600;
}
h2{
  font-size:clamp(24px,2.4vw,34px);
  line-height:1.25;
  font-weight:600;
  letter-spacing:.01em;
}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{color:var(--c-text)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:5px 12px;
  line-height:1.6;
}
.muted{color:var(--c-muted)}
.lead{font-size:17px;color:var(--c-muted);line-height:1.9}
section{scroll-margin-top:120px}
.sec{padding:var(--sec) 0}
.sec-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head p{max-width:640px;color:var(--c-muted);margin-top:10px}
.text-link{color:var(--c-primary);font-size:14px;display:inline-flex;align-items:center;gap:6px}
.text-link::after{content:"→";transition:transform .2s var(--ease)}
.text-link:hover::after{transform:translateX(4px)}

/* 顶部提示条 */
.notice-bar{background:var(--c-dark);color:#EDEAE4}
.notice-inner{display:flex;align-items:center;gap:16px;height:46px;font-size:13px}
.notice-tag{
  font-size:11px;letter-spacing:.1em;color:#EFE7DB;
  border:1px solid rgba(233,225,213,.32);border-radius:var(--r-pill);
  padding:3px 10px;white-space:nowrap;
}
.notice-inner .notice-text{color:#C9CFCB;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.notice-link{color:#E9E1D5;font-size:13px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.notice-link:hover{color:#fff}
.notice-link::after{content:"›";font-size:16px;line-height:1}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-bg);transition:box-shadow .22s var(--ease),background .22s var(--ease)}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--c-line),0 10px 24px -22px rgba(18,23,26,.5)}
.brand-row{border-bottom:1px solid transparent}
.site-header.is-scrolled .brand-row{border-bottom-color:var(--c-line)}
.brand-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .22s var(--ease)}
.site-header.is-scrolled .brand-inner{height:64px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--c-text)}
.brand-logo:hover{color:var(--c-text)}
.logo-mark{
  position:relative;width:24px;height:24px;border-radius:7px;background:var(--c-primary);flex:none;
}
.logo-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:#fff;opacity:.92}
.brand-sub{font-size:13px;color:var(--c-muted);border-left:1px solid var(--c-line);padding-left:20px;line-height:1.5}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-muted);border:1px solid transparent;transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);background:var(--c-primary-soft);border-color:var(--c-primary-soft)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-sand);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#A94E25;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{color:var(--c-primary);padding:0 4px;height:auto}
.btn-ghost::after{content:"→";transition:transform .2s var(--ease)}
.btn-ghost:hover::after{transform:translateX(4px)}
.nav-toggle{display:none}

/* 频道行 */
.channel-row{background:transparent}
.site-header.is-scrolled .channel-row{border-top:1px solid var(--c-line)}
.channel-inner{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;flex:none;padding:8px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--c-muted);transition:color .2s var(--ease),background .2s var(--ease);
}
.channel::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);border-radius:2px;
}
.channel:hover{color:var(--c-primary)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--c-primary-deep);background:var(--c-sand);font-weight:600}
.channel.is-active::after{transform:scaleX(1);background:var(--c-primary-deep)}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;background:var(--c-dark);color:#F2EFEA;z-index:90;
  display:flex;flex-direction:column;padding:28px 24px 32px;
  transform:translateY(-100%);transition:transform .3s var(--ease);visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff}
.drawer-brand .logo-mark{background:#E9E1D5}
.drawer-brand .logo-mark::after{background:var(--c-dark)}
.drawer-close{width:44px;height:44px;border-radius:var(--r-btn);color:#E9E1D5;display:inline-flex;align-items:center;justify-content:center;font-size:22px;line-height:1}
.drawer-close:hover{background:rgba(233,225,213,.12);color:#fff}
.drawer-links{display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.drawer-links a{font-size:22px;padding:14px 0;border-bottom:1px solid rgba(233,225,213,.12);color:#E7E4DE;font-weight:600}
.drawer-links a:hover,.drawer-links a.is-active{color:#8FC6B6}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-foot span{font-size:13px;color:#9AA39F}
body.no-scroll{overflow:hidden}

/* Hero */
.hero{padding:72px 0 96px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{margin:18px 0 20px;max-width:16em}
.hero .lead{max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;align-items:center}
.stat-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text);
  background:var(--c-sand);border-radius:var(--r-pill);padding:7px 14px;line-height:1.5;
}
.tag b{font-family:var(--font-mono);color:var(--c-primary-deep);font-weight:600}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);background:var(--c-sand)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(18,23,26,.22)}
.hero-media figcaption{
  position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;font-size:13px;letter-spacing:.02em;
}
.breadcrumb{font-size:13px;color:var(--c-muted);display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span[aria-current]{color:var(--c-text)}

/* 图墙 */
.wall{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);align-items:start}
.wall figure{
  position:relative;overflow:hidden;border-radius:var(--r-img);background:var(--c-sand);
  box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.wall figure:nth-child(1) img{aspect-ratio:4/5}
.wall figure:nth-child(2){margin-top:56px}
.wall figure:nth-child(2) img{aspect-ratio:1/1}
.wall figure:nth-child(3) img{aspect-ratio:16/10}
.wall figure:nth-child(4){margin-top:56px}
.wall figure:nth-child(4) img{aspect-ratio:4/3}
.wall figure img{width:100%;object-fit:cover;transition:transform .3s var(--ease)}
.wall figure:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.wall figure:hover img{transform:scale(1.03)}
.wall figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:36px 20px 18px;color:#fff;font-size:14px;
  background:linear-gradient(to top,rgba(18,23,26,.72),rgba(18,23,26,0));
}
.wall figure::after{content:"";position:absolute;inset:0;background:rgba(18,23,26,.06);transition:background .22s var(--ease)}
.wall figure:hover::after{background:rgba(18,23,26,.16)}

/* 要点条 */
.points{background:var(--c-sand);border-radius:var(--r-dark);padding:40px}
.points-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.points-head h2{font-size:24px}
.points-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.point{background:#fff;border-radius:var(--r-card);padding:22px;border:1px solid var(--c-line);transition:all .22s var(--ease)}
.point:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1)}
.point .num{font-family:var(--font-mono);font-size:13px;color:var(--c-accent);letter-spacing:.08em}
.point h3{font-size:16px;margin:8px 0 6px}
.point p{font-size:14px;color:var(--c-muted);line-height:1.75;margin:0}

/* 安全条目区 */
.split{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.split-aside{position:sticky;top:130px}
.split-aside h2{margin:14px 0 16px}
.split-aside .lead{font-size:15px}
.checklist{display:grid;gap:16px}
.check-item{
  display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;transition:all .22s var(--ease);
}
.check-item:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.check-item .idx{
  font-family:var(--font-mono);font-size:26px;line-height:1;color:var(--c-primary);
  letter-spacing:.02em;padding-top:4px;
}
.check-item h3{font-size:17px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--c-muted);line-height:1.8;margin:0}
.check-item .meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px}
.chip{font-size:12px;color:var(--c-primary-deep);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 10px}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;
  position:relative;overflow:hidden;transition:all .22s var(--ease);
}
.step:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1)}
.step .num{
  font-family:var(--font-mono);font-size:34px;line-height:1;color:var(--c-sand);font-weight:600;
  position:absolute;right:18px;top:14px;
}
.step h3{font-size:17px;margin-bottom:8px;position:relative}
.step p{font-size:14px;color:var(--c-muted);margin:0;line-height:1.8;position:relative}

/* 动态时间线 */
.timeline{border-top:1px solid var(--c-line)}
.tl-item{
  display:grid;grid-template-columns:150px 1fr auto;gap:24px;align-items:center;
  padding:22px 4px;border-bottom:1px solid var(--c-line);transition:background .2s var(--ease);
}
.tl-item:hover{background:#fff}
.tl-date{font-family:var(--font-mono);font-size:13px;color:var(--c-muted);letter-spacing:.04em}
.tl-item h3{font-size:16px;margin-bottom:4px}
.tl-item p{font-size:14px;color:var(--c-muted);margin:0}
.tl-link{font-size:13px;color:var(--c-primary);white-space:nowrap}
.tl-link:hover{text-decoration:underline}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--c-text);transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";width:20px;height:2px;background:var(--c-primary);flex:none;transition:transform .22s var(--ease);
}
.faq-item summary::after{
  content:"→";margin-left:auto;color:var(--c-muted);font-size:16px;transition:transform .22s var(--ease);
}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item[open] summary{color:var(--c-primary)}
.faq-item[open] summary::after{transform:rotate(90deg);color:var(--c-primary)}
.faq-body{padding:0 4px 26px 40px;color:var(--c-muted);font-size:15px;line-height:1.9;background:transparent;max-width:820px}
.faq-item[open] .faq-body{background:var(--c-sand);border-radius:0 0 var(--r-card) var(--r-card);padding:18px 24px 22px 40px}

/* CTA */
.cta-band{border:1px solid var(--c-primary);border-radius:var(--r-dark);padding:48px;background:#fff}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-grid h2{margin:14px 0 14px}
.cta-list{display:grid;gap:10px;margin-top:22px}
.cta-list li{font-size:14px;color:var(--c-muted)}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:var(--c-muted);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:12px 14px;font-size:15px;line-height:1.6;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.form-field textarea{min-height:110px;resize:vertical}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--c-muted);opacity:.75}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--c-primary);background:#fff}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--c-accent)}
.form-note{font-size:13px;color:var(--c-muted);margin-top:12px}
.form-msg{font-size:13px;color:var(--c-primary);margin-top:10px;min-height:20px}

/* 相关阅读 */
.rail{display:flex;gap:24px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:10px}
.rail-card{
  flex:0 0 340px;scroll-snap-align:start;background:var(--c-panel);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;transition:all .22s var(--ease);
}
.rail-card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rail-card .rail-body{padding:20px}
.rail-card .rail-body h3{font-size:16px;margin:10px 0 8px}
.rail-card .rail-body p{font-size:14px;color:var(--c-muted);margin:0}
.rail-meta{margin-top:14px;font-size:13px;color:var(--c-muted);display:flex;justify-content:space-between;gap:12px}

/* 页脚 */
.site-footer{background:var(--c-dark);color:#C9CFCB;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .logo-mark{background:#E9E1D5}
.footer-brand .logo-mark::after{background:var(--c-dark)}
.footer-desc{font-size:14px;color:#9AA39F;line-height:1.85;max-width:34em}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#9AA39F;padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:#8FC6B6}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(233,225,213,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8B9491;
}
.footer-bottom a{color:#C9CFCB}
.footer-bottom a:hover{color:#8FC6B6}

/* 响应式 */
@media (max-width:1024px){
  :root{--sec:72px;--container:100%;}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:48px 0 72px}
  .split{grid-template-columns:1fr;gap:32px}
  .split-aside{position:static}
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sec:56px;--gap:16px}
  body{font-size:15.5px}
  .container{padding:0 20px}
  .brand-sub{display:none}
  .brand-inner{height:64px}
  .site-header.is-scrolled .brand-inner{height:60px}
  .channel-row{display:none}
  .brand-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .notice-inner{height:42px}
  .notice-inner .notice-text{display:none}
  .hero-media img{aspect-ratio:4/3}
  .wall{grid-template-columns:1fr}
  .wall figure:nth-child(n){margin-top:0}
  .wall figure:nth-child(n) img{aspect-ratio:16/10}
  .points{padding:24px}
  .points-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .check-item{grid-template-columns:48px 1fr;gap:14px;padding:20px}
  .check-item .idx{font-size:22px}
  .tl-item{grid-template-columns:1fr;gap:8px;padding:18px 2px}
  .faq-item[open] .faq-body{padding:16px 18px 20px 18px}
  .faq-body{padding:0 2px 22px 36px}
  .cta-band{padding:28px 22px}
  .btn{height:48px}
  .rail-card{flex:0 0 82%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-actions .btn{width:100%}
}
@media (max-width:380px){
  body{font-size:15px}
  .hero h1{font-size:25px}
  h2{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .wall figure:hover img{transform:none}
}