/* roulang page: index */
:root{
  --c-primary:#2F6BB0;
  --c-primary-deep:#245A97;
  --c-primary-soft:#E8F0FA;
  --c-accent:#17A07A;
  --c-accent-soft:#E4F5EF;
  --c-warm:#D97742;
  --c-warm-soft:#FBEDE4;
  --c-bg:#F6F8FB;
  --c-board:#EEF3FA;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F1;
  --c-text:#101B2B;
  --c-text-2:#55637A;
  --c-text-3:#8A97AB;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(16,27,43,.05);
  --sh-2:0 10px 26px rgba(16,27,43,.08);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-deep);}
img{display:block;max-width:100%;border-radius:var(--r-md);border:1px solid var(--c-line);object-fit:cover;background:rgba(47,107,176,.06);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(140%) blur(8px);
}
.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),#4b86c8);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 4px 12px rgba(47,107,176,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.6px;}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-link{font-size:14px;font-weight:600;color:var(--c-text-2);}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-md);font-size:15px;font-weight:600;
  border:1px solid transparent;background:var(--c-primary);color:#fff;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,90,151,.2);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#C8D6E6;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:#B7C9DE;box-shadow:none;}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:8px;}
.btn-warm{background:var(--c-warm);}
.btn-warm:hover{background:#c4652f;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
  border-bottom:2px solid transparent;padding-bottom:1px;
}
.btn-link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-deep);}

/* ============ badges & tags ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:600;line-height:1.5;
  padding:3px 9px;border-radius:6px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.badge-accent{background:var(--c-accent-soft);color:#0f7a5d;}
.badge-warm{background:var(--c-warm-soft);color:#b05e2c;}
.badge-line{background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}

/* ============ sections ============ */
.sec{padding:56px 0;}
.sec-alt{background:var(--c-bg);}
.sec-board{background:var(--c-board);}
.sec + .sec{border-top:1px solid var(--c-line);}
.sec-head{margin-bottom:30px;}
.sec-head h2{
  font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;letter-spacing:-.2px;
}
.sec-head p{margin-top:12px;max-width:820px;color:var(--c-text-2);font-size:15px;}
.sec-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ============ hero ============ */
.hero{
  position:relative;
  padding:44px 0 56px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(47,107,176,.12),transparent 70%),
    radial-gradient(700px 380px at 0% 0%,rgba(23,160,122,.10),transparent 65%),
    #fff;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);font-size:12.5px;font-weight:600;letter-spacing:.3px;
}
.hero h1{
  margin-top:18px;
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;font-weight:700;letter-spacing:-.6px;
}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{
  margin-top:18px;font-size:16px;color:var(--c-text-2);max-width:600px;
}
.hero-lead p + p{margin-top:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.mini-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:32px;padding-top:24px;border-top:1px dashed var(--c-line);}
.mini-stat b{display:block;font-size:24px;font-weight:700;color:var(--c-text);line-height:1.2;}
.mini-stat span{font-size:13px;color:var(--c-text-3);}
.hero-media{position:relative;padding-bottom:26px;}
.hero-media img{width:100%;aspect-ratio:16/10;border-radius:var(--r-xl);box-shadow:var(--sh-2);}
.float-card{
  position:absolute;right:14px;bottom:6px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.float-card .pulse{
  width:8px;height:8px;border-radius:50%;background:var(--c-accent);
  box-shadow:0 0 0 4px rgba(23,160,122,.16);
}
.float-card b{font-size:13.5px;display:block;line-height:1.3;}
.float-card small{font-size:11.5px;color:var(--c-text-3);}

/* ============ update strip ============ */
.strip{
  background:rgba(47,107,176,.06);
  border-bottom:1px solid var(--c-line);
}
.strip-inner{display:flex;align-items:center;gap:22px;min-height:80px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap;}
.strip-time{font-size:12.5px;color:var(--c-text-3);margin-top:4px;}
.strip-list{display:flex;gap:26px;flex-wrap:wrap;flex:1;}
.strip-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.strip-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-primary);flex:0 0 5px;}
.strip .btn-link{margin-left:auto;}

/* ============ city matrix ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.city-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  position:relative;overflow:hidden;
}
.city-card::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:4px;border-radius:0 4px 4px 0;background:var(--c-primary);
}
.city-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDDEC;}
.city-card h3{font-size:18px;font-weight:600;}
.city-card .meta{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:13px;color:var(--c-text-3);}
.city-card .count{color:var(--c-accent);font-weight:700;}

/* ============ dimension cards ============ */
.dim-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .18s ease,transform .18s ease;}
.dim-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.dim-icon{
  width:42px;height:42px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;margin-bottom:16px;
}
.dim-card h3{font-size:17px;font-weight:600;}
.dim-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);}
.bar{height:6px;border-radius:999px;background:var(--c-line);margin-top:16px;overflow:hidden;}
.bar > i{display:block;height:100%;border-radius:999px;background:var(--c-accent);}
.bar-label{display:flex;justify-content:space-between;font-size:12px;color:var(--c-text-3);margin-top:8px;}

/* ============ data board ============ */
.board-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px;}
.board-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);}
.board-num{font-size:30px;font-weight:700;color:var(--c-accent);line-height:1.15;}
.board-num small{font-size:14px;color:var(--c-text-3);font-weight:600;margin-left:4px;}
.board-card p{font-size:13.5px;color:var(--c-text-2);margin-top:8px;}
.spark{display:flex;align-items:flex-end;gap:5px;height:44px;margin-top:16px;}
.spark i{flex:1;background:var(--c-primary-soft);border-radius:3px 3px 0 0;display:block;}
.spark i.on{background:var(--c-primary);}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.step{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);position:relative;}
.step-num{
  width:30px;height:30px;border-radius:50%;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:16.5px;font-weight:600;}
.step p{margin-top:8px;font-size:13.5px;color:var(--c-text-2);}

/* ============ topic wall ============ */
.topic-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.topic-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;
  display:flex;flex-direction:column;
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.topic-card img{width:100%;border:none;border-radius:0;aspect-ratio:16/9;}
.topic-card.tall img{aspect-ratio:16/12;}
.topic-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.topic-body h3{font-size:16.5px;font-weight:600;}
.topic-body p{font-size:13.5px;color:var(--c-text-2);}
.topic-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:12.5px;color:var(--c-text-3);}
.topic-card:hover .more{color:var(--c-primary);}
.more{transition:color .18s ease;font-weight:600;}

/* ============ reports ============ */
.report-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:20px;}
.report-main{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-1);}
.report-main img{width:100%;border:none;border-radius:0;aspect-ratio:4/3;}
.report-side{display:grid;gap:20px;}
.report-mini{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);}
.report-mini h3{font-size:16px;font-weight:600;margin-top:10px;}
.report-mini p{font-size:13.5px;color:var(--c-text-2);margin-top:8px;}
.report-body{padding:22px 24px 24px;}
.report-body h3{font-size:19px;font-weight:600;margin-top:10px;}
.report-body p{font-size:14px;color:var(--c-text-2);margin-top:10px;}
.report-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px;font-size:12.5px;color:var(--c-text-3);}

/* ============ scenes ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:26px 0;}
.scene + .scene{border-top:1px dashed var(--c-line);}
.scene.rev .scene-media{order:2;}
.scene-media img{width:100%;aspect-ratio:16/10;border-radius:var(--r-lg);box-shadow:var(--sh-1);}
.scene h3{font-size:20px;font-weight:700;}
.scene p{margin-top:12px;font-size:14.5px;color:var(--c-text-2);}
.check-list{margin-top:16px;display:grid;gap:10px;}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);}
.check-list li::before{
  content:"✓";flex:0 0 20px;width:20px;height:20px;border-radius:50%;
  background:var(--c-accent-soft);color:#0f7a5d;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}

/* ============ CMS posts ============ */
.posts-layout{display:grid;grid-template-columns:2.1fr 1fr;gap:28px;align-items:start;}
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  color:var(--c-text);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDDEC;color:var(--c-text);}
.post-card img{width:100%;border:none;border-radius:0;aspect-ratio:16/9;}
.post-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:15.5px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-desc{
  font-size:13.5px;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-text-3);margin-top:auto;}
.side-panel{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:20px;}
.side-panel h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;}
.side-list{margin-top:14px;display:grid;gap:14px;}
.side-item{display:flex;gap:12px;align-items:flex-start;color:var(--c-text);}
.side-item:hover .side-title{color:var(--c-primary);}
.side-item img{width:74px;height:56px;flex:0 0 74px;border-radius:8px;}
.side-title{font-size:13.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-time{font-size:12px;color:var(--c-text-3);margin-top:5px;}
.empty-state{
  grid-column:1/-1;background:#fff;border:1px dashed #C8D6E6;border-radius:var(--r-lg);
  padding:48px 20px;text-align:center;color:var(--c-text-3);font-size:14px;
}
.empty-state .empty-mark{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  margin:0 auto 14px;display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:18px;
}

/* ============ tag cloud ============ */
.tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);
  font-size:13.5px;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:#C8D6E6;}

/* ============ form ============ */
.form-layout{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);padding:26px;box-shadow:var(--sh-1);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--c-text-2);}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--c-line);border-radius:var(--r-md);
  background:#FBFCFE;font-size:14px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(47,107,176,.14);
}
.form-note{font-size:12.5px;color:var(--c-text-3);margin-top:12px;line-height:1.7;}
.mini-flow{display:grid;gap:14px;margin-top:22px;}
.mini-flow li{display:flex;gap:12px;font-size:14px;color:var(--c-text-2);}
.mini-flow li b{color:var(--c-primary);font-weight:700;}

/* ============ partners ============ */
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.partner{
  height:70px;border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;
  display:flex;align-items:center;justify-content:center;
  color:#9AA7B8;font-size:13.5px;font-weight:600;letter-spacing:.4px;
  filter:grayscale(1);transition:filter .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.partner:hover{filter:grayscale(0);color:var(--c-primary);border-color:#C8D6E6;transform:translateY(-2px);}

/* ============ faq ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;
  font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;transition:background .18s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--c-accent-soft);color:#0f7a5d;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-answer{padding:0 20px 18px;font-size:14px;color:var(--c-text-2);}

/* ============ assure bar ============ */
.assure{background:#F0F5FB;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.assure-inner{display:flex;align-items:center;gap:22px;padding:18px 0;flex-wrap:wrap;}
.shield{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:15px;font-weight:700;
}
.assure-list{display:flex;gap:24px;flex-wrap:wrap;flex:1;font-size:13.5px;color:var(--c-text-2);}
.assure-list li{position:relative;padding-left:0;}
.assure-list li + li{padding-left:24px;border-left:1px solid #D8E3F0;}

/* ============ cta subscribe ============ */
.cta-band{
  background-image:linear-gradient(115deg,rgba(36,90,151,.94),rgba(47,107,176,.86)),url('/assets/images/4e8002e7579428d0.jpg');
  background-size:cover;background-position:center;color:#fff;
}
.cta-inner{padding:56px 0;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35;}
.cta-inner p{margin-top:12px;font-size:14.5px;color:rgba(255,255,255,.86);}
.subscribe{display:flex;gap:10px;flex-wrap:wrap;}
.subscribe input{
  flex:1;min-width:200px;padding:12px 16px;border-radius:var(--r-md);border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.14);color:#fff;font-size:14px;
}
.subscribe input::placeholder{color:rgba(255,255,255,.7);}
.subscribe input:focus{outline:none;background:rgba(255,255,255,.22);border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.2);}
.subscribe .btn{background:#fff;color:var(--c-primary-deep);}
.subscribe .btn:hover{background:#EAF2FB;color:var(--c-primary-deep);}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.trust-row span{
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
}

/* ============ footer ============ */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);}
.footer-note{
  background:#EEF3FA;border-bottom:1px solid var(--c-line);
  font-size:12.5px;color:var(--c-text-3);padding:10px 0;
}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:44px 0 36px;}
.footer-brand p{font-size:13.5px;color:var(--c-text-2);margin-top:14px;max-width:320px;}
.footer-col h4{font-size:13.5px;font-weight:700;color:var(--c-text);letter-spacing:.4px;margin-bottom:14px;}
.footer-col li + li{margin-top:9px;}
.footer-col a{font-size:13.5px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:18px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ============ responsive ============ */
@media (max-width:1100px){
  .partners{grid-template-columns:repeat(3,1fr);}
  .footer-main{grid-template-columns:1.2fr 1fr 1fr;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-media{padding-bottom:20px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .board-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .topic-wall{grid-template-columns:repeat(2,1fr);}
  .report-grid{grid-template-columns:1fr;}
  .posts-layout{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .form-layout{grid-template-columns:1fr;gap:24px;}
  .cta-inner{grid-template-columns:1fr;gap:22px;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1.2fr 1fr 1fr;gap:24px;}
}
@media (max-width:768px){
  .sec{padding:44px 0;}
  .hero{padding:32px 0 44px;}
  .scene{grid-template-columns:1fr;gap:20px;}
  .scene.rev .scene-media{order:0;}
  .steps{grid-template-columns:1fr;}
  .strip-inner{gap:14px;}
  .strip-list{gap:14px;flex-direction:column;align-items:flex-start;}
  .strip .btn-link{margin-left:0;}
  .assure-list{flex-direction:column;gap:10px;}
  .assure-list li + li{padding-left:0;border-left:none;}
  .mini-stats{gap:22px;}
  .mini-stat b{font-size:20px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:24px;}
  .partner{height:60px;font-size:12.5px;}
  .post-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-sub{display:none;}
  .brand-name{font-size:13.5px;}
  .header-actions .nav-link{display:none;}
  .btn{padding:11px 18px;font-size:14px;}
  .grid-4,.board-grid,.topic-wall{grid-template-columns:1fr;}
  .partners{grid-template-columns:repeat(2,1fr);}
  .footer-main{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .subscribe input,.subscribe .btn{width:100%;flex:1 1 100%;}
}

/* roulang page: article */
:root{
  --c-primary:#2F6BB0;
  --c-primary-deep:#245A97;
  --c-primary-soft:#E8F0FA;
  --c-accent:#17A07A;
  --c-accent-soft:#E4F5EF;
  --c-warm:#D97742;
  --c-warm-soft:#FBEDE4;
  --c-bg:#F6F8FB;
  --c-board:#EEF3FA;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F1;
  --c-text:#101B2B;
  --c-text-2:#55637A;
  --c-text-3:#8A97AB;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(16,27,43,.05);
  --sh-2:0 10px 26px rgba(16,27,43,.08);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-deep);}
img{display:block;max-width:100%;border-radius:var(--r-md);border:1px solid var(--c-line);object-fit:cover;background:rgba(47,107,176,.06);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(140%) blur(8px);
}
.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),#4b86c8);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 4px 12px rgba(47,107,176,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.6px;}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-link{font-size:14px;font-weight:600;color:var(--c-text-2);}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-md);font-size:15px;font-weight:600;
  border:1px solid transparent;background:var(--c-primary);color:#fff;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,90,151,.2);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#C8D6E6;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:#B7C9DE;box-shadow:none;}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:8px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
  border-bottom:2px solid transparent;padding-bottom:1px;
}
.btn-link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-deep);}

/* ============ badges ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:600;line-height:1.5;
  padding:3px 9px;border-radius:6px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.badge-accent{background:var(--c-accent-soft);color:#0f7a5d;}
.badge-warm{background:var(--c-warm-soft);color:#b05e2c;}
.badge-line{background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-bg);border-bottom:1px solid var(--c-line);padding:13px 0;}
.crumb-bar .container{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-text-3);}
.crumb-bar a{color:var(--c-text-2);font-weight:500;}
.crumb-bar a:hover{color:var(--c-primary);}
.crumb-sep{color:#B7C4D6;}
.crumb-current{color:var(--c-text-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-head{padding:34px 0 0;background:var(--c-surface);}
.article-head-inner{max-width:820px;margin:0 auto;}
.head-flagline{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.article-head h1{
  font-size:clamp(24px,3.2vw,36px);
  line-height:1.32;font-weight:700;letter-spacing:-.4px;color:var(--c-text);
}
.head-desc{margin-top:14px;font-size:15.5px;color:var(--c-text-2);line-height:1.8;}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:20px;padding-bottom:20px;border-bottom:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CEE0;}
.meta-strong{color:var(--c-text-2);font-weight:600;}
.cover-wrap{margin-top:24px;}
.cover-wrap img{width:100%;aspect-ratio:16/9;border-radius:var(--r-lg);box-shadow:var(--sh-1);}
.cover-caption{margin-top:10px;font-size:12.5px;color:var(--c-text-3);text-align:center;}

/* ============ 正文 ============ */
.article-zone{max-width:820px;margin:0 auto;padding:30px 0 6px;}
.article-body{font-size:16px;line-height:1.85;color:#1B2739;overflow-wrap:break-word;word-break:break-word;}
.article-body h2{
  position:relative;font-size:23px;line-height:1.45;font-weight:700;
  margin:34px 0 16px;padding-left:14px;color:var(--c-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18px;line-height:1.55;font-weight:600;margin:26px 0 12px;color:var(--c-text);}
.article-body h4{font-size:16px;font-weight:600;margin:20px 0 10px;color:var(--c-text);}
.article-body p{margin:0 0 16px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:6px 0;}
.article-body li::marker{color:var(--c-primary);}
.article-body blockquote{
  margin:22px 0;padding:14px 18px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:#2C4364;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;margin:22px 0;border-radius:12px;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-deep);}
.article-body strong{font-weight:700;color:var(--c-text);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:28px 0;}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:20px 0;font-size:14.5px;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;}
.article-body thead th{background:var(--c-board);font-weight:600;color:var(--c-text);}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.empty-state{
  border:1px dashed #C8D6E6;background:var(--c-bg);border-radius:var(--r-lg);
  padding:40px 24px;text-align:center;
}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--c-text-2);font-size:14.5px;margin-bottom:18px;}

/* ============ 标签与分享 ============ */
.tag-share{
  max-width:820px;margin:0 auto;padding:22px 0 0;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag-pill{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  background:var(--c-board);color:var(--c-text-2);font-size:12.5px;font-weight:600;
  border:1px solid var(--c-line);transition:background .18s ease,color .18s ease;
}
.tag-pill:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.share-group{display:flex;align-items:center;gap:8px;}
.share-label{font-size:13px;color:var(--c-text-3);margin-right:2px;}
.share-btn{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.share-btn:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:#BFD3EA;transform:translateY(-1px);}
.share-btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.share-btn svg{width:16px;height:16px;}

/* ============ 相关推荐 ============ */
.sec{padding:56px 0;}
.sec-alt{background:var(--c-bg);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.sec-head{max-width:820px;margin:0 auto 26px;}
.sec-head-wide{max-width:var(--max);}
.sec-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;letter-spacing:-.2px;}
.sec-head p{margin-top:8px;font-size:14.5px;color:var(--c-text-2);}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);color:var(--c-text);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDDEC;color:var(--c-text);}
.rel-thumb{overflow:hidden;}
.rel-thumb img{width:100%;aspect-ratio:16/9;border:0;border-radius:0;}
.rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1;}
.rel-body h3{font-size:15.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-time{font-size:12.5px;color:var(--c-text-3);margin-top:auto;display:flex;align-items:center;gap:6px;}
.rel-empty{
  max-width:820px;margin:0 auto;padding:30px 22px;text-align:center;
  background:#fff;border:1px dashed #C8D6E6;border-radius:var(--r-lg);color:var(--c-text-2);font-size:14.5px;
}

/* ============ 上下篇 ============ */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:820px;margin:0 auto;}
.pn-card{
  display:flex;align-items:center;gap:14px;padding:18px 20px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFDDEC;}
.pn-icon{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;
}
.pn-icon svg{width:16px;height:16px;}
.pn-card small{display:block;font-size:12px;color:var(--c-text-3);letter-spacing:.4px;}
.pn-card b{display:block;font-size:14.5px;font-weight:600;color:var(--c-text);line-height:1.5;}
.pn-card.is-right{text-align:right;justify-content:flex-end;}
.back-home{max-width:820px;margin:20px auto 0;text-align:center;}

/* ============ 提示条 ============ */
.tip-bar{background:#F0F5FB;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:16px 0;}
.tip-bar .container{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.tip-bar .tip-icon{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:#fff;border:1px solid #D3E0EF;
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.tip-bar .tip-icon svg{width:16px;height:16px;}
.tip-items{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--c-text-2);}
.tip-items span{display:inline-flex;align-items:center;gap:8px;}
.tip-items span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-accent);}

/* ============ 订阅 CTA ============ */
.sub-cta{
  background:linear-gradient(135deg,#EAF1FB 0%,#F4F8FD 55%,#EAF6F1 100%);
  border-top:1px solid var(--c-line);
  padding:52px 0;
}
.sub-inner{
  max-width:760px;margin:0 auto;text-align:center;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-xl);padding:34px 26px;box-shadow:var(--sh-1);
}
.sub-inner h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;}
.sub-inner p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);}
.sub-form{display:flex;gap:10px;max-width:480px;margin:22px auto 0;}
.sub-form input{
  flex:1;min-width:0;padding:12px 14px;border-radius:var(--r-md);
  border:1px solid #CDDBEA;background:#FBFDFF;font-size:14.5px;color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.sub-form input::placeholder{color:var(--c-text-3);}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,107,176,.14);}
.sub-trust{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:18px;font-size:12.5px;color:var(--c-text-3);}
.sub-trust span{display:inline-flex;align-items:center;gap:6px;}
.sub-trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

/* ============ footer ============ */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding-top:0;}
.footer-note{
  background:#EDF3FA;border-bottom:1px solid var(--c-line);
  padding:10px 0;font-size:12.5px;color:var(--c-text-3);
}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:42px 0 30px;}
.footer-brand p{margin-top:14px;font-size:13.5px;color:var(--c-text-2);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.5px;color:var(--c-text-2);}
.footer-col ul li a:hover{color:var(--c-primary);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding:18px 0 24px;font-size:12.5px;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-main{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:768px){
  .sec{padding:44px 0;}
  .article-head{padding:26px 0 0;}
  .header-inner{height:60px;}
  .brand-name{font-size:13.5px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .brand-sub{display:none;}
  .header-actions .nav-link{display:none;}
  .btn-sm{padding:8px 14px;font-size:12.5px;}
  .pn-grid{grid-template-columns:1fr;}
  .pn-card.is-right{text-align:left;justify-content:flex-start;}
  .sub-inner{padding:26px 18px;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr;gap:22px;padding:32px 0 22px;}
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
  .tag-share{flex-direction:column;align-items:flex-start;}
  .tip-bar .container{gap:12px;}
  .crumb-current{max-width:180px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#2F6BB0;
  --c-primary-deep:#245A97;
  --c-primary-soft:#E8F0FA;
  --c-accent:#17A07A;
  --c-accent-soft:#E4F5EF;
  --c-warm:#D97742;
  --c-warm-soft:#FBEDE4;
  --c-bg:#F6F8FB;
  --c-board:#EEF3FA;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F1;
  --c-text:#101B2B;
  --c-text-2:#55637A;
  --c-text-3:#8A97AB;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(16,27,43,.05);
  --sh-2:0 10px 26px rgba(16,27,43,.08);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);background:var(--c-surface);
  font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-deep);}
img{display:block;max-width:100%;border-radius:var(--r-md);border:1px solid var(--c-line);object-fit:cover;background:rgba(47,107,176,.06);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px;}
/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--c-line);backdrop-filter:saturate(140%) blur(8px);}
.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:linear-gradient(140deg,var(--c-primary),#4b86c8);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.5px;box-shadow:0 4px 12px rgba(47,107,176,.25);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.6px;}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-link{font-size:14px;font-weight:600;color:var(--c-text-2);}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);}
/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-md);font-size:15px;font-weight:600;border:1px solid transparent;background:var(--c-primary);color:#fff;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap;}
.btn:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,90,151,.2);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#C8D6E6;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:#B7C9DE;box-shadow:none;}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:8px;}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:2px solid transparent;padding-bottom:1px;}
.btn-link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-deep);}
/* ===== badges ===== */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;line-height:1.5;padding:3px 9px;border-radius:6px;background:var(--c-primary-soft);color:var(--c-primary-deep);}
.badge-accent{background:var(--c-accent-soft);color:#0f7a5d;}
.badge-warm{background:var(--c-warm-soft);color:#b05e2c;}
.badge-line{background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);}
/* ===== section base ===== */
.sec{padding:64px 0;border-top:1px solid var(--c-line);}
.sec-head{max-width:760px;margin-bottom:30px;}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;letter-spacing:-.3px;}
.sec-head p{margin-top:12px;color:var(--c-text-2);font-size:15px;}
.sec-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:1.2px;color:var(--c-primary);margin-bottom:10px;text-transform:uppercase;}
/* ===== 1 分类头区 ===== */
.page-head{
  padding:34px 0 38px;
  background:
    radial-gradient(760px 320px at 92% -30%,rgba(47,107,176,.14),transparent 70%),
    radial-gradient(560px 300px at 2% 0%,rgba(23,160,122,.10),transparent 68%),
    var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.page-head-inner{display:grid;grid-template-columns:1.35fr .65fr;gap:36px;align-items:center;}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-2);font-weight:600;}
.crumb .current{color:var(--c-primary);font-weight:700;}
.page-head h1{margin-top:14px;font-size:clamp(26px,3.2vw,36px);line-height:1.3;font-weight:700;letter-spacing:-.5px;}
.page-head h1 em{font-style:normal;color:var(--c-primary);}
.page-head-desc{margin-top:14px;font-size:15px;color:var(--c-text-2);max-width:640px;}
.head-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.page-head-side{display:flex;flex-direction:column;gap:14px;}
.stat-stack{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.stat{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:12px 10px;text-align:center;box-shadow:var(--sh-1);}
.stat b{display:block;font-size:19px;font-weight:700;color:var(--c-primary);line-height:1.3;}
.stat span{display:block;font-size:11.5px;color:var(--c-text-3);margin-top:2px;}
.head-thumb{width:100%;aspect-ratio:16/9;border-radius:var(--r-lg);box-shadow:var(--sh-2);}
/* ===== 2 筛选条 ===== */
.filter-sec{background:#fff;border-bottom:1px solid var(--c-line);padding:16px 0;}
.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);
  font-size:13px;font-weight:600;padding:7px 15px;border-radius:999px;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{border-color:#B7C9DE;color:var(--c-primary);}
.chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 6px 14px rgba(47,107,176,.22);}
.sort-wrap{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);}
.sort-select{border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);padding:7px 12px;font-size:13px;color:var(--c-text-2);}
/* ===== 3 列表 ===== */
.list-sec{background:var(--c-bg);}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);color:var(--c-text);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CBDCEB;color:var(--c-text);}
.post-thumb{margin:0;}
.post-thumb img{width:100%;aspect-ratio:16/9;border:0;border-radius:0;}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card h3{font-size:16.5px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover h3{color:var(--c-primary-deep);}
.post-excerpt{font-size:13.8px;color:var(--c-text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--c-line);font-size:12.5px;color:var(--c-text-3);}
.post-meta .arrow{color:var(--c-primary);font-weight:700;}
.list-more{display:flex;justify-content:center;margin-top:34px;}
.empty-state{background:#fff;border:1px dashed #C8D6E6;border-radius:var(--r-lg);padding:56px 24px;text-align:center;color:var(--c-text-3);font-size:14.5px;}
/* ===== 4 收录说明 ===== */
.intro-sec{background:#fff;}
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;}
.intro-text p{font-size:15px;color:var(--c-text-2);line-height:1.85;}
.intro-text p + p{margin-top:16px;}
.intro-panel{background:var(--c-board);border:1px solid var(--c-line);border-radius:var(--r-xl);padding:26px;}
.intro-panel h3{font-size:16px;font-weight:700;margin-bottom:14px;color:var(--c-text);}
.num-list{counter-reset:step;}
.num-list li{position:relative;padding-left:38px;font-size:14px;color:var(--c-text-2);line-height:1.7;padding-bottom:14px;margin-bottom:14px;border-bottom:1px dashed #D8E4F0;}
.num-list li:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
.num-list li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:1px;width:24px;height:24px;border-radius:8px;background:#fff;border:1px solid #C8D6E6;color:var(--c-primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.num-list li b{color:var(--c-text);}
/* ===== 5 FAQ ===== */
.faq-sec{background:var(--c-bg);}
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;}
.faq-item[open]{border-color:#C6D8EA;box-shadow:var(--sh-2);}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 20px;font-size:15px;font-weight:600;color:var(--c-text);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:18px;font-weight:700;color:var(--c-primary);line-height:1;flex:0 0 auto;}
.faq-item[open] summary::after{content:"−";}
.faq-item p{padding:0 20px 18px;font-size:14px;color:var(--c-text-2);line-height:1.85;}
/* ===== 6 精选专题 ===== */
.topics-sec{background:#fff;}
.topic-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.topic-card{display:flex;gap:14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:14px;box-shadow:var(--sh-1);color:var(--c-text);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CBDCEB;color:var(--c-text);}
.topic-card img{width:96px;height:96px;flex:0 0 96px;border-radius:var(--r-md);}
.topic-body{display:flex;flex-direction:column;gap:6px;min-width:0;}
.topic-body h3{font-size:14.5px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.topic-body span{font-size:12px;color:var(--c-text-3);}
.topic-body .more{margin-top:auto;font-size:12.5px;font-weight:700;color:var(--c-primary);}
/* ===== 7 订阅 CTA ===== */
.cta-sec{background:var(--c-board);}
.cta-card{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);box-shadow:var(--sh-2);padding:34px 32px;text-align:center;}
.cta-card h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;}
.cta-card p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);}
.subscribe-form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px;}
.subscribe-form input{flex:1 1 280px;max-width:360px;border:1px solid #C8D6E6;border-radius:var(--r-md);padding:11px 14px;font-size:14px;background:#fff;}
.subscribe-form input::placeholder{color:var(--c-text-3);}
.subscribe-form input:focus{border-color:var(--c-primary);outline:none;box-shadow:0 0 0 3px rgba(47,107,176,.14);}
/* ===== 8 分类入口 ===== */
.channel-sec{background:#fff;}
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.channel-card{display:flex;flex-direction:column;gap:8px;padding:20px;border:1px solid var(--c-line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--sh-1);color:var(--c-text);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CBDCEB;color:var(--c-text);}
.channel-card .ch-top{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.channel-card h3{font-size:15px;font-weight:700;}
.channel-card p{font-size:13px;color:var(--c-text-2);line-height:1.7;}
.channel-card .ch-link{font-size:12.5px;font-weight:700;color:var(--c-primary);margin-top:auto;}
/* ===== footer ===== */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding-top:0;}
.footer-note{background:#F0F5FB;border-bottom:1px solid var(--c-line);font-size:12.5px;color:var(--c-text-3);padding:10px 0;line-height:1.7;}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:44px 0 34px;}
.footer-brand p{font-size:13px;color:var(--c-text-2);line-height:1.8;margin-top:14px;max-width:360px;}
.footer-col h4{font-size:13.5px;font-weight:700;color:var(--c-text);margin-bottom:12px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col ul li a{font-size:13px;color:var(--c-text-2);}
.footer-col ul li a:hover{color:var(--c-primary);}
.footer-bottom{border-top:1px solid var(--c-line);padding:16px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:var(--c-text-3);}
/* ===== responsive ===== */
@media (max-width:1024px){
  .page-head-inner{grid-template-columns:1fr;gap:26px;}
  .page-head-side{flex-direction:row;align-items:center;gap:16px;}
  .stat-stack{flex:1;}
  .head-thumb{width:260px;flex:0 0 260px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .topic-list{grid-template-columns:1fr;}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-main{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .sec{padding:46px 0;}
  .hero,.page-head{padding-top:26px;}
  .header-actions{gap:10px;}
  .nav-link{display:none;}
  .page-head-side{flex-direction:column;align-items:stretch;}
  .head-thumb{width:100%;flex:none;}
  .post-grid{grid-template-columns:1fr;}
  .channel-grid{grid-template-columns:1fr;}
  .cta-card{padding:26px 20px;}
  .footer-main{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .brand-name{font-size:13.5px;}
  .brand-sub{font-size:10px;}
  .btn-sm{padding:8px 12px;font-size:12.5px;}
  .stat-stack{grid-template-columns:repeat(3,1fr);gap:8px;}
  .stat b{font-size:16px;}
  .subscribe-form input{max-width:none;}
  .subscribe-form .btn{width:100%;}
}