/* roulang page: index */
:root{
  --coral:#E8663D;
  --coral-dark:#D4552F;
  --teal:#1F6F6B;
  --teal-dark:#175552;
  --sand:#F6C56B;
  --paper:#FBF7F0;
  --surface:#FFFFFF;
  --ink:#25302E;
  --muted:#6B7674;
  --line:#E8DED2;
  --peach:#FDE7DC;
  --mint:#DDF1EA;
  --radius:20px;
  --radius-sm:12px;
  --radius-xs:999px;
  --shadow-sm:0 8px 24px rgba(37,48,46,.06);
  --shadow-lg:0 16px 40px rgba(37,48,46,.10);
  --container:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);
  font-weight:800;
  letter-spacing:.01em;
  line-height:1.35;
  margin:0 0 .6em;
}
h1{font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.28;}
h2{font-size:clamp(24px,2.6vw,31px);}
h3{font-size:22px;font-weight:700;}
p{margin:0 0 1em;}
a{color:var(--teal);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--coral);text-decoration:underline;}
img{max-width:100%;height:auto;display:block;border-radius:16px;object-fit:cover;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(232,102,61,.35);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.bg-white{background:var(--surface);}
.bg-mint{background:var(--mint);}
.bg-peach{background:var(--peach);}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center;}
.section-head.left{text-align:left;margin-left:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--teal);background:var(--mint);
  padding:6px 14px;border-radius:var(--radius-xs);
  margin-bottom:18px;
}
.section-desc{color:var(--muted);font-size:16px;margin:0;}
.chip{
  display:inline-block;font-size:13px;line-height:1.6;font-weight:600;
  padding:4px 12px;border-radius:var(--radius-xs);
  background:var(--peach);color:var(--coral-dark);
}
.chip--mint{background:var(--mint);color:var(--teal);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:all var(--ease);text-align:center;
  line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--coral);color:#fff;border-color:var(--coral);}
.btn-primary:hover{background:var(--coral-dark);border-color:var(--coral-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);background:var(--coral-dark);}
.btn-ghost{background:transparent;color:var(--teal);border-color:var(--teal);}
.btn-ghost:hover{background:rgba(31,111,107,.06);color:var(--teal);}
.btn-ghost:active{background:rgba(31,111,107,.12);}
.btn-light{background:#fff;color:var(--teal);border-color:#fff;}
.btn-light:hover{background:var(--paper);color:var(--coral-dark);border-color:var(--paper);}
.btn-block{width:100%;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,247,240,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(37,48,46,.08);}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--coral);display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;box-shadow:0 6px 14px rgba(232,102,61,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.04em;}
.brand-text em{font-size:12px;font-style:normal;color:var(--teal);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;}
.main-nav a{
  font-size:15px;font-weight:600;color:var(--ink);position:relative;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--coral);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform var(--ease);
}
.main-nav a:hover{color:var(--coral);text-decoration:none;}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--coral);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-cta .btn{min-height:42px;font-size:14px;padding:0 18px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:72px 0 88px;
  background:
    radial-gradient(1200px 420px at 85% -10%, rgba(246,197,107,.28), transparent 60%),
    linear-gradient(180deg,#FBF7F0 0%, #FDF4EC 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.hero-sub{
  font-size:19px;font-weight:700;color:var(--teal);
  margin:0 0 16px;line-height:1.6;
}
.hero-lead{color:var(--muted);font-size:16px;max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.hero-note{
  font-size:13.5px;color:var(--muted);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:10px 16px;display:inline-block;
}
.check-strip{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;
}
.check-item{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;font-weight:600;color:var(--teal-dark);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:7px 14px;
}
.check-item svg{width:15px;height:15px;flex:0 0 auto;color:var(--coral);}
.hero-visual{position:relative;padding-bottom:26px;}
.hero-main{
  width:100%;aspect-ratio:16/10;border-radius:24px;overflow:hidden;
  box-shadow:var(--shadow-lg);border:1px solid rgba(232,222,210,.9);
}
.hero-main img{width:100%;height:100%;border-radius:24px;}
.hero-thumb{
  position:absolute;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:10px 14px;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;gap:10px;max-width:250px;
}
.hero-thumb img{width:44px;height:44px;border-radius:12px;flex:0 0 auto;}
.hero-thumb b{display:block;font-size:13.5px;color:var(--ink);line-height:1.4;}
.hero-thumb span{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.hero-thumb-1{left:-18px;top:22%;}
.hero-thumb-2{right:-10px;bottom:6%;}
.pin{color:var(--coral);}

/* ---------- scene mosaic ---------- */
.mosaic{
  display:grid;grid-template-columns:repeat(4,1fr);
  grid-auto-rows:minmax(180px,auto);gap:22px;
}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.scene-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
  border-color:rgba(232,102,61,.3);
}
.scene-card--lg{grid-column:span 2;grid-row:span 1;padding:0;overflow:hidden;position:relative;}
.scene-card--lg .scene-media{position:relative;height:100%;min-height:230px;}
.scene-card--lg .scene-media img{width:100%;height:100%;border-radius:0;position:absolute;inset:0;}
.scene-card--lg .scene-body{
  position:relative;z-index:2;padding:26px;
  background:linear-gradient(180deg,rgba(37,48,46,0) 0%,rgba(37,48,46,.82) 62%);
  color:#fff;height:100%;display:flex;flex-direction:column;justify-content:flex-end;
}
.scene-card--lg .scene-body h3{color:#fff;margin-bottom:8px;}
.scene-card--lg .scene-body p{color:rgba(255,255,255,.86);font-size:14px;margin-bottom:12px;}
.scene-card--lg .scene-link{color:var(--sand);}
.scene-icon{
  width:46px;height:46px;border-radius:14px;background:var(--mint);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--teal);
}
.scene-icon svg{width:24px;height:24px;}
.scene-card h3{font-size:19px;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px;}
.scene-link{font-size:14px;font-weight:700;color:var(--teal);margin-top:auto;}
.scene-link:hover{color:var(--coral);}
.scene-card--lg .scene-link:hover{color:#fff;}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow-sm);transition:all var(--ease);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.metric-num{font-size:38px;font-weight:800;color:var(--coral);line-height:1.1;margin-bottom:6px;}
.metric-num small{font-size:15px;font-weight:700;color:var(--muted);margin-left:4px;}
.metric-card h3{font-size:17px;margin:10px 0 8px;}
.metric-card p{font-size:14px;color:var(--muted);margin:0;}
.metric-tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--teal);
  background:var(--mint);padding:3px 10px;border-radius:var(--radius-xs);
}

/* ---------- flow ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;
}
.flow::before{
  content:"";position:absolute;top:30px;left:8%;right:8%;height:0;
  border-top:2px dashed rgba(31,111,107,.28);z-index:0;
}
.flow-step{position:relative;z-index:1;background:transparent;}
.flow-dot{
  width:60px;height:60px;border-radius:50%;background:#fff;border:2px solid var(--teal);
  color:var(--teal);font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.flow-step.active .flow-dot{background:var(--coral);border-color:var(--coral);color:#fff;}
.flow-step h3{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:14.5px;color:var(--muted);margin-bottom:10px;}
.flow-step a{font-size:14px;font-weight:700;}

/* ---------- cases ---------- */
.case-row{margin-left:-11px;margin-right:-11px;}
.case-row .column{padding-left:11px;padding-right:11px;margin-bottom:22px;display:flex;}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--ease);
  display:flex;flex-direction:column;width:100%;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.case-media{aspect-ratio:4/3;overflow:hidden;}
.case-media img{width:100%;height:100%;border-radius:0;transition:transform 400ms ease;}
.case-card:hover .case-media img{transform:scale(1.04);}
.case-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.case-body h3{font-size:17.5px;margin:0;}
.case-body p{font-size:14px;color:var(--muted);margin:0;}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:start;}
.news-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;height:100%;
}
.news-feature h3{font-size:23px;margin:0;line-height:1.45;}
.news-feature h3 a{color:var(--ink);}
.news-feature h3 a:hover{color:var(--coral);text-decoration:none;}
.news-feature p{font-size:14.5px;color:var(--muted);margin:0;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);margin-top:auto;}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:18px 20px;box-shadow:var(--shadow-sm);transition:all var(--ease);
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.news-item h4{font-size:16px;margin:0 0 6px;font-weight:700;line-height:1.5;}
.news-item h4 a{color:var(--ink);}
.news-item h4 a:hover{color:var(--coral);text-decoration:none;}
.news-item p{font-size:13.5px;color:var(--muted);margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .news-meta{margin-top:0;font-size:12.5px;}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:48px 24px;text-align:center;color:var(--muted);font-size:15px;
}

/* ---------- scene types strip ---------- */
.type-strip{
  display:grid;grid-template-columns:repeat(6,1fr);gap:16px;
}
.type-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px 12px;text-align:center;transition:all var(--ease);
}
.type-item:hover{border-color:rgba(31,111,107,.4);transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.type-item svg{width:28px;height:28px;color:var(--teal);margin:0 auto 10px;display:block;}
.type-item span{font-size:14px;font-weight:600;color:var(--ink);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-wrap .accordion{border:none;background:transparent;}
.faq-wrap .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  margin-bottom:14px;overflow:hidden;transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-wrap .accordion-item:hover{border-color:rgba(232,102,61,.3);box-shadow:var(--shadow-sm);}
.faq-wrap .accordion-title{
  font-size:16.5px;font-weight:700;color:var(--ink);padding:20px 54px 20px 22px;
  border:none;background-image:none;position:relative;transition:background var(--ease);
}
.faq-wrap .accordion-title:hover{background:#FDFAF5;}
.faq-wrap .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--coral);line-height:1;
}
.faq-wrap .accordion-item.is-active .accordion-title{background:var(--peach);color:var(--coral-dark);}
.faq-wrap .accordion-item.is-active .accordion-title::before{content:"–";}
.faq-wrap .accordion-content{padding:0 22px 22px;color:var(--muted);font-size:15px;background:#fff;}
.faq-wrap .accordion-content p:last-child{margin-bottom:0;}

/* ---------- safety bar ---------- */
.safety-bar{background:var(--teal);color:#fff;padding:60px 0;}
.safety-bar h2{color:#fff;font-size:26px;margin-bottom:12px;}
.safety-bar .safety-lead{color:rgba(255,255,255,.78);font-size:15px;max-width:720px;margin:0 auto 36px;text-align:center;}
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.safety-item{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:16px;padding:22px;transition:background var(--ease);
}
.safety-item:hover{background:rgba(255,255,255,.14);}
.safety-item svg{width:24px;height:24px;color:var(--sand);margin-bottom:12px;display:block;}
.safety-item h3{color:#fff;font-size:17px;margin-bottom:6px;}
.safety-item p{color:rgba(255,255,255,.78);font-size:13.5px;margin:0;}

/* ---------- download ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 26px;text-align:center;box-shadow:var(--shadow-sm);
  transition:all var(--ease);display:flex;flex-direction:column;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.dl-icon{
  width:56px;height:56px;border-radius:18px;background:var(--peach);color:var(--coral);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.dl-icon svg{width:28px;height:28px;}
.dl-card h3{font-size:19px;margin-bottom:8px;}
.dl-card p{font-size:14px;color:var(--muted);margin-bottom:22px;}
.dl-card .btn{margin-top:auto;}
.dl-note{
  text-align:center;font-size:13.5px;color:var(--muted);margin-top:26px;
}

/* ---------- people ---------- */
.people-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.people-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);transition:all var(--ease);
  display:flex;flex-direction:column;
}
.people-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.people-card h3{font-size:18px;margin:12px 0 10px;}
.people-card p{font-size:14px;color:var(--muted);margin-bottom:10px;}
.people-card .act{
  font-size:14px;color:var(--ink);background:var(--paper);
  border-radius:var(--radius-sm);padding:10px 14px;margin-bottom:16px;
}
.people-card a{margin-top:auto;font-size:14px;font-weight:700;}

/* ---------- tips ---------- */
.tips-list{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.tip-item{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px dashed var(--line);
}
.tip-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;background:var(--mint);
  color:var(--teal);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.tip-item h3{font-size:16.5px;margin:0 0 6px;}
.tip-item p{font-size:14px;color:var(--muted);margin:0 0 8px;}
.tip-item a{font-size:13.5px;font-weight:700;}

/* ---------- week ---------- */
.week-bar{display:grid;grid-template-columns:repeat(7,1fr);gap:14px;}
.week-day{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 16px;
  transition:all var(--ease);
}
.week-day:hover{border-color:rgba(31,111,107,.4);transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.week-day strong{display:block;font-size:13px;color:var(--coral);letter-spacing:.1em;margin-bottom:8px;}
.week-day p{font-size:13.5px;color:var(--ink);margin:0;line-height:1.7;}

/* ---------- topics ---------- */
.topic-tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.tag{
  display:inline-block;font-size:14px;font-weight:600;color:var(--teal);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:10px 20px;transition:all var(--ease);
}
.tag:hover{background:var(--mint);border-color:rgba(31,111,107,.35);color:var(--teal-dark);text-decoration:none;transform:translateY(-2px);}

/* ---------- final cta ---------- */
.cta-final{
  background:linear-gradient(135deg,#1F6F6B 0%,#175552 60%,#123F3D 100%);
  border-radius:28px;padding:64px 48px;text-align:center;color:#fff;
}
.cta-final h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-final p{color:rgba(255,255,255,.8);font-size:15.5px;max-width:640px;margin:0 auto 28px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--teal);color:rgba(255,255,255,.82);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:17px;letter-spacing:.04em;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:var(--sand);letter-spacing:.14em;}
.site-footer p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.72);margin:0 0 10px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.04em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.8);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}

/* ---------- mobile dock ---------- */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:none;align-items:center;gap:12px;
  background:#fff;border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(37,48,46,.10);
}
.mobile-dock.is-visible{display:flex;}
.mobile-dock .btn{flex:1;}
.dock-close{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--muted);font-size:18px;line-height:1;cursor:pointer;flex:0 0 auto;
}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{order:-1;max-width:620px;}
  .mosaic{grid-template-columns:repeat(2,1fr);}
  .scene-card--lg{grid-column:span 2;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px;}
  .flow::before{display:none;}
  .safety-grid{grid-template-columns:repeat(2,1fr);}
  .dl-grid{grid-template-columns:repeat(3,1fr);}
  .people-grid{grid-template-columns:repeat(2,1fr);}
  .type-strip{grid-template-columns:repeat(3,1fr);}
  .news-layout{grid-template-columns:1fr;}
  .week-bar{grid-template-columns:repeat(4,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:900px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .site-header.nav-open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    width:100%;padding:8px 0 4px;
  }
  .site-header.nav-open .main-nav a{
    padding:13px 4px;border-bottom:1px solid var(--line);font-size:15.5px;
  }
  .site-header.nav-open .main-nav a::after{display:none;}
  .site-header.nav-open .nav-cta{
    display:flex;flex-direction:column;gap:10px;width:100%;padding:16px 0 20px;
  }
  .site-header.nav-open .nav-cta .btn{width:100%;min-height:46px;}
  .nav-wrap{flex-wrap:wrap;padding-bottom:0;}
  .site-header.nav-open .nav-wrap{padding-bottom:0;}
}
@media screen and (max-width:768px){
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .hero{padding:48px 0 56px;}
  .mosaic{grid-template-columns:1fr;}
  .scene-card--lg{grid-column:span 1;}
  .metric-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-dot{width:52px;height:52px;font-size:17px;}
  .safety-grid{grid-template-columns:1fr;}
  .dl-grid{grid-template-columns:1fr;}
  .people-grid{grid-template-columns:1fr;}
  .type-strip{grid-template-columns:repeat(2,1fr);}
  .tips-list{grid-template-columns:1fr;gap:0;}
  .week-bar{grid-template-columns:repeat(2,1fr);}
  .cta-final{padding:44px 24px;border-radius:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-thumb-1{left:0;top:auto;bottom:44%;}
  .hero-thumb-2{right:0;bottom:0;}
  .hero-thumb{max-width:210px;padding:8px 12px;}
  .hero-thumb img{width:38px;height:38px;}
  .news-feature{padding:24px;}
}
@media screen and (max-width:520px){
  .container{padding:0 18px;}
  .hero-actions .btn{width:100%;}
  .hero-sub{font-size:17px;}
  .week-bar{grid-template-columns:1fr;}
  .type-strip{grid-template-columns:1fr 1fr;}
  .hero-thumb{max-width:170px;}
  .hero-thumb b{font-size:12.5px;}
  .hero-thumb span{font-size:11px;}
  .tip-item{gap:14px;}
}

/* roulang page: article */
:root{
  --coral:#E8663D;
  --coral-dark:#D4552F;
  --teal:#1F6F6B;
  --teal-dark:#175552;
  --sand:#F6C56B;
  --paper:#FBF7F0;
  --surface:#FFFFFF;
  --ink:#25302E;
  --muted:#6B7674;
  --line:#E8DED2;
  --peach:#FDE7DC;
  --mint:#DDF1EA;
  --radius:20px;
  --radius-sm:12px;
  --radius-xs:999px;
  --shadow-sm:0 8px 24px rgba(37,48,46,.06);
  --shadow-lg:0 16px 40px rgba(37,48,46,.10);
  --container:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 16px;line-height:1.35;letter-spacing:.01em;color:var(--ink);font-weight:800;}
h1{font-size:clamp(28px,3.6vw,42px);}
h2{font-size:clamp(23px,2.4vw,30px);}
h3{font-size:20px;font-weight:700;}
p{margin:0 0 18px;}
a{color:var(--teal);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--coral);text-decoration:underline;}
img{max-width:100%;height:auto;display:block;border-radius:16px;object-fit:cover;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0 0 18px;padding-left:1.2em;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--mint{background:var(--mint);}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center;}
.section-head.left{text-align:left;margin-left:0;}
.section-head h2{margin-bottom:12px;}
.section-desc{color:var(--muted);font-size:16px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--teal);background:var(--mint);
  padding:6px 14px;border-radius:var(--radius-xs);
  margin-bottom:16px;
}
.chip{
  display:inline-block;font-size:13px;line-height:1.6;font-weight:600;
  padding:4px 12px;border-radius:var(--radius-xs);
  background:var(--peach);color:var(--coral-dark);
}
.chip--mint{background:var(--mint);color:var(--teal);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:all var(--ease);text-align:center;line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(232,102,61,.35);}
.btn-primary{background:var(--coral);color:#fff;border-color:var(--coral);}
.btn-primary:hover{background:var(--coral-dark);border-color:var(--coral-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);background:var(--coral-dark);}
.btn-ghost{background:transparent;color:var(--teal);border-color:var(--teal);}
.btn-ghost:hover{background:rgba(31,111,107,.06);color:var(--teal);}
.btn-ghost:active{background:rgba(31,111,107,.12);}
.btn-block{width:100%;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,247,240,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(37,48,46,.08);}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--coral);display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;box-shadow:0 6px 14px rgba(232,102,61,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.04em;}
.brand-text em{font-size:12px;font-style:normal;color:var(--teal);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;}
.main-nav a{font-size:15px;font-weight:600;color:var(--ink);position:relative;padding:6px 0;}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--coral);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform var(--ease);
}
.main-nav a:hover{color:var(--coral);text-decoration:none;}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--coral);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-cta .btn{min-height:42px;font-size:14px;padding:0 18px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);padding:26px 0 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--coral);text-decoration:none;}
.breadcrumb .sep{color:#CBBFB1;}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
/* ---------- 文章头部 ---------- */
.article-hero{
  padding:22px 0 44px;
  background:linear-gradient(180deg,#FDF4EC 0%, var(--paper) 100%);
  border-bottom:1px solid var(--line);
}
.article-hero h1{margin:14px 0 18px;max-width:900px;}
.article-lead{font-size:16.5px;color:var(--muted);max-width:780px;margin:0 0 22px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC3B5;display:inline-block;}
/* ---------- 封面 ---------- */
.cover-block{padding:40px 0 0;}
.cover-figure{margin:0;border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-lg);background:#fff;}
.cover-figure img{width:100%;aspect-ratio:16/10;border-radius:0;}
.cover-caption{font-size:13.5px;color:var(--muted);padding:12px 4px 0;}
/* ---------- 主体布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,720px) 300px;gap:48px;
  align-items:start;padding:52px 0 96px;
}
.article-main{min-width:0;}
/* ---------- 要点速览 ---------- */
.takeaways{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 30px;box-shadow:var(--shadow-sm);margin-bottom:40px;
}
.takeaways h2{font-size:19px;margin:0 0 16px;display:flex;align-items:center;gap:10px;}
.takeaways h2::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);}
.takeaways ul{list-style:none;margin:0;padding:0;}
.takeaways li{
  position:relative;padding-left:26px;margin-bottom:12px;
  font-size:15.5px;line-height:1.8;color:#37423F;
}
.takeaways li:last-child{margin-bottom:0;}
.takeaways li::before{
  content:"";position:absolute;left:4px;top:10px;width:9px;height:9px;
  border-radius:50%;background:var(--mint);border:2px solid var(--teal);
}
/* ---------- 正文 ---------- */
.article-body{font-size:17px;line-height:1.9;color:#26312F;overflow-wrap:break-word;}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);margin:44px 0 18px;padding-top:22px;
  border-top:1px solid var(--line);
}
.article-body h2:first-child{margin-top:0;padding-top:0;border-top:0;}
.article-body h3{font-size:21px;margin:32px 0 14px;color:var(--teal-dark);}
.article-body p{margin:0 0 20px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:1.3em;}
.article-body li{margin-bottom:10px;}
.article-body strong{color:var(--teal-dark);font-weight:700;}
.article-body blockquote{
  margin:0 0 26px;padding:18px 24px;background:var(--peach);
  border-left:4px solid var(--coral);border-radius:var(--radius-sm);
  color:#6B4A38;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body figure{margin:0 0 26px;}
.article-body figcaption{font-size:13.5px;color:var(--muted);padding-top:10px;}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;margin:0 0 26px;border:1px solid var(--line);border-radius:var(--radius-sm);
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.article-body th{background:var(--mint);color:var(--teal-dark);font-weight:700;}
.article-body tr:last-child td{border-bottom:0;}
.article-body a{text-decoration:underline;text-decoration-color:rgba(31,111,107,.35);}
.article-body a:hover{text-decoration-color:var(--coral);}
/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:48px 32px;text-align:center;box-shadow:var(--shadow-sm);
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--muted);margin-bottom:24px;}
/* ---------- 安全提示 ---------- */
.safety-note{
  display:flex;gap:16px;background:var(--peach);
  border-left:5px solid var(--coral);border-radius:var(--radius-sm);
  padding:22px 26px;margin:44px 0 0;
}
.safety-note .icon{flex:0 0 auto;width:26px;height:26px;color:var(--coral-dark);}
.safety-note h3{font-size:17px;margin:0 0 8px;color:#7A3F27;}
.safety-note p{margin:0;font-size:15px;line-height:1.8;color:#6B4A38;}
/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px;box-shadow:var(--shadow-sm);
}
.aside-card h3{font-size:16px;margin:0 0 14px;color:var(--teal-dark);}
.aside-card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 12px;}
.aside-card p:last-child{margin-bottom:0;}
.dl-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.dl-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:44px;padding:0 16px;border-radius:12px;font-size:14.5px;font-weight:700;
  background:var(--mint);color:var(--teal-dark);transition:all var(--ease);
}
.dl-list a:hover{background:var(--teal);color:#fff;text-decoration:none;transform:translateY(-2px);}
.dl-list a span.arrow{opacity:.6;}
.aside-tags{display:flex;flex-wrap:wrap;gap:8px;}
.aside-tags span{
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:var(--radius-xs);
  background:var(--paper);border:1px solid var(--line);color:var(--muted);
}
/* ---------- 相关推荐 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);transition:all var(--ease);color:var(--ink);
}
.rel-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
  border-color:rgba(232,102,61,.3);text-decoration:none;color:var(--ink);
}
.rel-card h3{font-size:17px;line-height:1.55;margin:0;}
.rel-card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;flex:1;}
.rel-time{font-size:12.5px;color:#9AA3A0;}
.rel-empty{
  grid-column:1/-1;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius);padding:32px;text-align:center;color:var(--muted);font-size:14.5px;
}
/* ---------- 下载迷你条 ---------- */
.dl-strip{
  background:var(--teal);border-radius:24px;padding:32px 34px;color:#F4FFFC;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.dl-strip h3{color:#fff;font-size:20px;margin:0 0 6px;}
.dl-strip p{color:rgba(244,255,252,.78);font-size:14px;margin:0;}
.dl-strip-actions{display:flex;flex-wrap:wrap;gap:10px;}
.dl-strip-actions .btn{background:#fff;color:var(--teal-dark);border-color:#fff;font-size:14px;padding:0 18px;}
.dl-strip-actions .btn:hover{background:var(--paper);color:var(--coral-dark);border-color:var(--paper);transform:translateY(-1px);}
/* ---------- 返回 ---------- */
.back-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;}
.back-row .back-links{display:flex;flex-wrap:wrap;gap:12px;}
/* ---------- footer ---------- */
.site-footer{background:var(--teal);color:#EAF6F3;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{display:block;font-size:17px;color:#fff;letter-spacing:.04em;}
.footer-brand em{display:block;font-size:12px;font-style:normal;color:var(--sand);letter-spacing:.12em;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(234,246,243,.78);margin:0 0 12px;}
.site-footer h4{font-size:15px;color:#fff;margin:0 0 16px;letter-spacing:.04em;}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(234,246,243,.82);}
.footer-links a:hover{color:var(--sand);text-decoration:none;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.16);padding:22px 0 28px;
  font-size:13px;color:rgba(234,246,243,.62);
}
/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;padding:40px 0 80px;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-aside .aside-card{flex:1 1 260px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .site-header.nav-open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 24px 20px;box-shadow:var(--shadow-lg);
  }
  .site-header.nav-open .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15.5px;}
  .site-header.nav-open .main-nav a::after{display:none;}
  .site-header.nav-open .nav-cta{
    display:flex;flex-direction:column;align-items:stretch;gap:10px;
    position:absolute;left:0;right:0;top:100%;margin-top:calc(8px + 6 * 51px);
    background:#fff;padding:0 24px 24px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg);
  }
  .site-header.nav-open .nav-cta .btn{width:100%;min-height:44px;}
}
@media screen and (max-width:768px){
  .section{padding:56px 0;}
  .container{padding:0 20px;}
  .article-hero{padding:14px 0 36px;}
  .cover-block{padding:28px 0 0;}
  .takeaways{padding:22px 20px;}
  .safety-note{flex-direction:column;gap:10px;padding:20px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .dl-strip{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .dl-strip-actions{width:100%;}
  .dl-strip-actions .btn{flex:1 1 140px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .article-body{font-size:16.5px;}
  .article-body h2{margin-top:36px;}
}
@media screen and (max-width:520px){
  .nav-wrap{min-height:64px;gap:12px;}
  .brand-text em{display:none;}
  .breadcrumb{font-size:12.5px;padding-top:18px;}
  .back-row{flex-direction:column;align-items:stretch;}
  .back-row .btn{width:100%;}
  .back-row .back-links{flex-direction:column;}
  .article-aside{flex-direction:column;}
  .takeaways li{font-size:15px;}
  .article-body table{font-size:14px;}
}

/* roulang page: category1 */
:root{
  --coral:#E8663D;
  --coral-dark:#D4552F;
  --teal:#1F6F6B;
  --teal-dark:#175552;
  --sand:#F6C56B;
  --paper:#FBF7F0;
  --surface:#FFFFFF;
  --ink:#25302E;
  --muted:#6B7674;
  --line:#E8DED2;
  --peach:#FDE7DC;
  --mint:#DDF1EA;
  --radius:20px;
  --radius-sm:12px;
  --radius-xs:999px;
  --shadow-sm:0 8px 24px rgba(37,48,46,.06);
  --shadow-lg:0 16px 40px rgba(37,48,46,.10);
  --container:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 14px;font-weight:800;line-height:1.35;letter-spacing:.01em;}
h1{font-size:clamp(30px,4.2vw,50px);}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:22px;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 14px;padding-left:1.2em;}
img{max-width:100%;height:auto;display:block;border-radius:16px;object-fit:cover;}
a{color:var(--teal);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--coral);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(232,102,61,.35);outline-offset:2px;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
section[id]{scroll-margin-top:92px;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:all var(--ease);text-align:center;line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--coral);color:#fff;border-color:var(--coral);}
.btn-primary:hover{background:var(--coral-dark);border-color:var(--coral-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);background:var(--coral-dark);}
.btn-ghost{background:transparent;color:var(--teal);border-color:var(--teal);}
.btn-ghost:hover{background:rgba(31,111,107,.06);color:var(--teal);}
.btn-ghost:active{background:rgba(31,111,107,.12);}
.btn-light{background:#fff;color:var(--teal);border-color:#fff;}
.btn-light:hover{background:var(--paper);color:var(--coral-dark);border-color:var(--paper);}
.btn-block{width:100%;}
.chip{
  display:inline-block;font-size:13px;line-height:1.6;font-weight:600;
  padding:4px 12px;border-radius:var(--radius-xs);
  background:var(--peach);color:var(--coral-dark);
}
.chip--mint{background:var(--mint);color:var(--teal);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--teal);background:var(--mint);
  padding:6px 14px;border-radius:var(--radius-xs);margin-bottom:16px;
}
.section{padding:88px 0;}
.section--paper{background:var(--paper);}
.section--white{background:var(--surface);}
.section--mint{background:linear-gradient(180deg,#F3FAF6 0%, #EAF6F1 100%);}
.section-head{max-width:760px;margin:0 0 40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-desc{color:var(--muted);font-size:16px;margin:0;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,247,240,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(37,48,46,.08);}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;position:relative;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--coral);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:0 6px 14px rgba(232,102,61,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.04em;}
.brand-text em{font-size:12px;font-style:normal;color:var(--teal);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;}
.main-nav a{font-size:15px;font-weight:600;color:var(--ink);position:relative;padding:6px 0;}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--coral);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform var(--ease);
}
.main-nav a:hover{color:var(--coral);text-decoration:none;}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--coral);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-cta .btn{min-height:42px;font-size:14px;padding:0 18px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 分类头部 ---------- */
.cat-hero{
  position:relative;
  padding:44px 0 52px;
  background:
    radial-gradient(900px 320px at 88% -30%, rgba(246,197,107,.26), transparent 65%),
    linear-gradient(180deg,#FBF7F0 0%, #FDF4EC 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;right:24px;top:38px;width:180px;height:120px;
  background-image:radial-gradient(var(--line) 1.6px, transparent 1.6px);
  background-size:14px 14px;opacity:.75;pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:18px;
}
.breadcrumb a{color:var(--teal);font-weight:600;}
.breadcrumb span[aria-current]{color:var(--muted);}
.cat-hero h1{max-width:900px;margin-bottom:18px;}
.cat-lead{max-width:780px;color:var(--muted);font-size:16.5px;margin-bottom:22px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0;}
.tag-row li{
  font-size:13.5px;font-weight:600;color:var(--teal);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:7px 15px;
}

/* ---------- 精选条目 ---------- */
.featured-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch;}
.featured-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.card-media{overflow:hidden;}
.card-media img{width:100%;height:100%;border-radius:0;}
.card-media--wide{aspect-ratio:16/10;}
.card-media--small{aspect-ratio:16/7;}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;margin:0;}
.card-body p{color:var(--muted);font-size:15px;margin:0;flex:1;}
.card-link{
  font-weight:700;font-size:14.5px;color:var(--teal);
  display:inline-flex;align-items:center;gap:6px;
}
.card-link::after{content:"→";transition:transform var(--ease);}
.card-link:hover{color:var(--coral);text-decoration:none;}
.card-link:hover::after{transform:translateX(4px);}
.card--wide .card-body{padding:26px 28px 28px;}
.card--wide .card-body h3{font-size:24px;}

/* ---------- 列表主体 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.list-foot{display:flex;justify-content:center;margin-top:40px;}

/* ---------- 主题聚类 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.topic-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 28px 24px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.topic-block:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(31,111,107,.28);}
.topic-block h3{font-size:20px;display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.topic-dot{width:10px;height:10px;border-radius:50%;background:var(--coral);flex:0 0 auto;}
.topic-block p{color:var(--muted);font-size:15px;margin-bottom:16px;}
.topic-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.topic-links a{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink);
  padding-bottom:10px;border-bottom:1px dashed var(--line);transition:color var(--ease);
}
.topic-links li:last-child a{border-bottom:0;padding-bottom:0;}
.topic-links a::before{content:"›";color:var(--coral);font-weight:800;line-height:1.5;}
.topic-links a:hover{color:var(--coral);text-decoration:none;}

/* ---------- 自测清单 ---------- */
.check-wrap{
  display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:center;
}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow-sm);
}
.check-list{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  transition:border-color var(--ease),background var(--ease);
}
.check-list li:hover{border-color:rgba(232,102,61,.35);background:#FFFCF8;}
.check-list input[type=checkbox]{
  width:20px;height:20px;accent-color:var(--coral);margin:4px 0 0;flex:0 0 auto;cursor:pointer;
}
.check-list span{font-size:15.5px;}
.check-note{font-size:13px;color:var(--muted);margin:14px 0 0;}

/* ---------- 阅读路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.path-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;gap:10px;
}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(232,102,61,.3);}
.path-num{
  width:40px;height:40px;border-radius:12px;background:var(--mint);color:var(--teal);
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;
}
.path-card h3{font-size:19px;margin:0;}
.path-card p{color:var(--muted);font-size:15px;margin:0;flex:1;}

/* ---------- 下载条 ---------- */
.dl-band{
  background:linear-gradient(135deg,var(--teal-dark) 0%, #1F6F6B 100%);
  border-radius:24px;padding:40px;color:#fff;
  display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;
  box-shadow:var(--shadow-lg);
}
.dl-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.dl-band p{color:rgba(240,245,242,.82);font-size:15px;margin:0;}
.dl-actions{display:grid;gap:12px;}
.dl-actions .btn{justify-content:flex-start;padding:0 20px;min-height:50px;}
.dl-actions .btn span{font-weight:800;}
.dl-tip{font-size:12.5px;color:rgba(240,245,242,.66);margin-top:10px;}

/* ---------- FAQ ---------- */
.faq-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);cursor:pointer;
  min-height:56px;transition:background var(--ease),color var(--ease);
}
.faq-q:hover{background:var(--paper);}
.faq-item.open .faq-q{background:var(--peach);color:var(--coral-dark);}
.faq-icon{width:18px;height:18px;position:relative;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;
  transform:translate(-50%,-50%);border-radius:2px;transition:transform var(--ease);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{padding:4px 24px 22px;color:var(--muted);font-size:15.5px;}
.faq-a[hidden]{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--teal-dark);color:#EFE9DF;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px;font-weight:800;}
.site-footer p{color:rgba(240,235,226,.78);font-size:14.5px;line-height:1.85;margin-bottom:12px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{color:#fff;font-size:17px;letter-spacing:.04em;}
.footer-brand em{display:block;font-style:normal;font-size:12.5px;color:var(--sand);letter-spacing:.08em;}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}
.footer-links a{color:rgba(240,235,226,.85);font-size:14.5px;}
.footer-links a:hover{color:var(--sand);text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding-top:18px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(240,235,226,.65);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .main-nav{gap:16px;}
  .main-nav a{font-size:14.5px;}
}
@media (max-width:1024px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{flex-wrap:wrap;min-height:64px;}
  .site-header.nav-open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    width:100%;order:3;margin-top:8px;padding:6px 0 10px;
    border-top:1px solid var(--line);
  }
  .site-header.nav-open .main-nav a{
    padding:12px 4px;font-size:16px;border-bottom:1px dashed var(--line);
  }
  .site-header.nav-open .main-nav a::after{display:none;}
  .site-header.nav-open .nav-cta{
    display:flex;flex-direction:column;gap:10px;width:100%;order:4;padding-bottom:16px;
  }
  .site-header.nav-open .nav-cta .btn{width:100%;min-height:46px;}
  .featured-grid{grid-template-columns:1fr;}
  .featured-side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .check-wrap{grid-template-columns:1fr;gap:28px;}
  .path-grid{grid-template-columns:1fr;}
  .dl-band{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  .topic-grid{grid-template-columns:1fr;}
  .cat-hero::after{display:none;}
  .cat-lead{font-size:15.5px;}
  .card--wide .card-body h3{font-size:21px;}
  .faq-q{font-size:15.5px;padding:18px 18px;}
  .faq-a{padding:4px 18px 20px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .featured-side{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .dl-actions .btn{justify-content:center;}
  .dl-band{padding:26px 22px;border-radius:20px;}
  .check-card,.topic-block,.path-card{padding:22px;}
  .footer-bottom{flex-direction:column;}
  .section-head{margin-bottom:30px;}
}