/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand:#1B5FA8;
  --brand-d:#134274;
  --brand-l:#E8F1FB;
  --accent:#E8863A;
  --accent-l:#FDF1E6;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --line:#E3ECF6;
  --text:#1C2A3A;
  --text-2:#5B6B7C;
  --ok:#2E9E6B;
  --warn:#D9A11B;
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 6px 20px rgba(19,66,116,.07);
  --shadow-h:0 16px 36px rgba(19,66,116,.13);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:var(--font);
  font-size:16px;line-height:1.75;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-d);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ============ 布局容器 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
@media (max-width:991px){.wrap{padding:0 24px;}}
@media (max-width:520px){.wrap{padding:0 18px;}}

.grid-2,.grid-3,.grid-4{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
@media (max-width:991px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr);}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(170%) blur(10px);
  -webkit-backdrop-filter:saturate(170%) blur(10px);
  box-shadow:0 8px 24px rgba(19,66,116,.09);
}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
  box-shadow:0 6px 14px rgba(27,95,168,.28);
}
.brand-mark svg{width:21px;height:21px;display:block;}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:var(--brand-l);}
.main-nav a.active{color:var(--brand);font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;
  height:3px;border-radius:3px;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  font-size:18px;line-height:1;
}
.nav-toggle:hover{background:var(--brand-l);}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:14px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .wrap{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer a{
  padding:12px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;
}
.mobile-drawer a:hover,.mobile-drawer a.active{
  color:var(--brand);background:var(--brand-l);border-color:#d6e6f8;
}
.mobile-drawer .btn{margin-top:10px;}

@media (max-width:991px){
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;text-align:center;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(27,95,168,.22);}
.btn-primary:hover{background:var(--brand-d);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(19,66,116,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-l);color:var(--brand-d);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(232,134,58,.26);}
.btn-accent:hover{background:#d1762d;color:#fff;transform:translateY(-2px);}
.btn-block{width:100%;}
.btn.is-done{background:var(--ok);border-color:var(--ok);color:#fff;box-shadow:none;transform:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;white-space:nowrap;}
.link-more i{transition:transform .2s var(--ease);}
.link-more:hover i{transform:translateX(4px);}
.link-read{font-size:14px;font-weight:600;text-decoration:underline;text-decoration-color:transparent;text-underline-offset:4px;}
.link-read:hover{text-decoration-color:currentColor;}

/* ============ 徽章 / 标签 ============ */
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-l);color:var(--brand);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-l);color:var(--brand);
}
.badge-accent{background:var(--accent-l);color:#b9631f;}
.badge-ok{background:rgba(46,158,107,.12);color:var(--ok);}
.badge-warn{background:rgba(217,161,27,.14);color:#9a7312;}
.chip{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:500;
  background:#fff;border:1px solid var(--line);color:var(--text-2);
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l);transform:translateY(-2px);}

/* ============ 板块骨架 ============ */
.section{padding:92px 0;position:relative;}
.section--alt{background:#fff;}
.section--tight{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px;}
.sec-head > div{max-width:760px;}
.sec-title{position:relative;padding-left:18px;font-size:30px;letter-spacing:.01em;}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:var(--brand);
}
.sec-title::after{
  content:"";position:absolute;left:-3px;top:4px;width:9px;height:9px;
  border-radius:2px;background:var(--accent);
}
.sec-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);}
@media (max-width:768px){
  .section{padding:58px 0;}
  .section--tight{padding:46px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .sec-title{font-size:23px;}
}

/* ============ 卡片 ============ */
.card{
  position:relative;overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:26px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;right:0;
  width:3px;height:28px;border-radius:0 0 0 3px;
  background:var(--brand);
}
.card--accent::before{background:var(--accent);}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#d3e4f6;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:14px;line-height:1.75;color:var(--text-2);}
.dot-row{display:flex;gap:5px;margin-top:18px;}
.dot-row i{width:6px;height:6px;border-radius:50%;background:var(--brand-l);display:block;}
.dot-row i:nth-child(2){background:#cfe2f7;}
.dot-row i:nth-child(3){background:var(--accent-l);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:76px 0 84px;background:linear-gradient(180deg,#EAF2FC 0%,#F6F9FD 100%);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.jpg");
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(120deg,rgba(246,249,253,.96) 0%,rgba(246,249,253,.86) 48%,rgba(246,249,253,.55) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:52px;align-items:center;}
.hero-copy h1{font-size:clamp(27px,3.4vw,44px);line-height:1.24;margin:20px 0 18px;letter-spacing:.01em;}
.hero-lead{font-size:15.5px;line-height:1.9;color:var(--text-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:600;color:var(--brand-d);
}
.hero-points span i{color:var(--accent);}

.hero-live{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:0 18px 44px rgba(19,66,116,.13);
  overflow:hidden;
}
.live-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dce8f6;}
.live-cover img{width:100%;height:100%;object-fit:cover;}
.live-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(19,66,116,0) 45%,rgba(19,66,116,.55) 100%);
}
.live-tag{
  position:absolute;top:14px;left:14px;z-index:3;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;letter-spacing:.04em;
}
.live-len{
  position:absolute;right:14px;bottom:12px;z-index:3;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
  color:#fff;background:rgba(19,66,116,.6);border-radius:6px;padding:3px 9px;
}
.live-body{padding:20px 22px 24px;}
.live-title{font-size:18px;margin-bottom:8px;}
.live-desc{font-size:13.5px;line-height:1.7;color:var(--text-2);margin-bottom:16px;}
.countdown{display:flex;align-items:center;gap:8px;margin-bottom:16px;}
.cd-cell{
  flex:1;text-align:center;background:var(--bg);
  border:1px solid var(--line);border-radius:10px;
  padding:8px 4px 6px;
}
.cd-num{display:block;font-family:var(--mono);font-size:22px;font-weight:700;color:var(--brand-d);letter-spacing:.04em;}
.cd-label{display:block;font-size:11px;color:var(--text-2);letter-spacing:.06em;}
.cd-sep{font-family:var(--mono);font-size:20px;font-weight:700;color:#b9cbe0;}
.form-note{font-size:12px;line-height:1.7;color:var(--text-2);margin-top:12px;}

@media (max-width:991px){
  .hero{padding:56px 0 62px;}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:34px;}
  .hero-live{max-width:520px;}
}
@media (max-width:480px){
  .hero-copy h1{font-size:25px;}
  .btn{padding:12px 20px;font-size:14.5px;}
}

/* ============ 检索条 ============ */
.search-panel{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);padding:30px 32px;
}
.search-title{font-size:20px;margin-bottom:18px;}
.search-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;}
.search-box{
  display:flex;align-items:center;gap:12px;
  height:50px;padding:0 18px;
  border:1.5px solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(27,95,168,.12);}
.search-box i{color:var(--text-2);font-size:15px;}
.search-box input{flex:1;border:0;background:transparent;outline:none;font-size:15px;height:100%;}
.search-box input::placeholder{color:#9aabbb;}
.hot-keys{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;}
.hot-keys-label{font-size:13px;font-weight:600;color:var(--text-2);margin-right:2px;}
@media (max-width:640px){
  .search-panel{padding:22px 18px;}
  .search-form{grid-template-columns:minmax(0,1fr);}
  .search-form .btn{width:100%;}
}

/* ============ 分类矩阵 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.cat-card{
  position:relative;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-left:5px solid var(--brand);
  border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px 24px;color:var(--text);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);color:var(--text);border-left-color:var(--accent);}
.cat-card h3{font-size:18px;margin-bottom:10px;}
.cat-card p{font-size:13.5px;line-height:1.75;color:var(--text-2);flex:1;}
.cat-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);}
.cat-card--main{
  grid-column:span 1;
  background:linear-gradient(160deg,#ffffff 0%,#eef5fd 100%);
}
.cat-card--main .cat-badge{
  align-self:flex-start;margin-bottom:14px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:var(--accent);color:#fff;
}
.cat-count{display:block;margin-top:10px;font-family:var(--mono);font-size:12px;color:var(--text-2);letter-spacing:.04em;}
@media (max-width:991px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.cat-grid{grid-template-columns:minmax(0,1fr);}}

/* ============ 痛点卡 ============ */
.pain{padding-top:30px;}
.pain .badge{margin-bottom:14px;}
.pain h3{font-size:18px;}

/* ============ 能力总览 ============ */
.solution{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start;}
.solution-copy p{font-size:15px;line-height:1.9;color:var(--text-2);margin-top:16px;}
.tick-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.tick-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.tick-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;font-size:12px;color:var(--ok);
}
.solution-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.solution-grid .card h3{font-size:17px;}
@media (max-width:991px){
  .solution{grid-template-columns:minmax(0,1fr);gap:30px;}
}
@media (max-width:520px){
  .solution-grid{grid-template-columns:minmax(0,1fr);}
}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;position:relative;}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:64px;height:4px;border-radius:999px;
  background:linear-gradient(90deg,var(--brand) 0%,var(--accent) 100%);
  opacity:.22;
}
.step{
  position:relative;z-index:1;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 22px 26px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  font-family:var(--mono);font-size:17px;font-weight:700;
  background:var(--brand-l);color:var(--brand);
  margin-bottom:16px;
}
.step:nth-child(even) .step-num{background:var(--accent-l);color:#b9631f;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:13.5px;line-height:1.75;color:var(--text-2);}
@media (max-width:991px){
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps::before{display:none;}
}
@media (max-width:560px){
  .steps{grid-template-columns:minmax(0,1fr);}
}

/* ============ 内容卡片 ============ */
.item-card{padding:0;display:flex;flex-direction:column;}
.item-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#dce8f6;}
.item-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.item-card:hover .item-thumb img{transform:scale(1.05);}
.thumb-tag{
  position:absolute;left:12px;top:12px;
  padding:4px 11px;border-radius:6px;
  font-size:12px;font-weight:600;
  background:var(--brand-l);color:var(--brand);
  box-shadow:0 2px 8px rgba(19,66,116,.12);
}
.item-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.item-body h3{font-size:17.5px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.item-body p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.item-meta{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
}
.item-meta .date{font-size:12.5px;color:var(--text-2);letter-spacing:.03em;}

/* ============ 更新列表 ============ */
.update-list{display:flex;flex-direction:column;gap:14px;}
.update-list li{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;
  gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px 24px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.update-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);}
.update-list .date{font-size:13px;color:var(--text-2);letter-spacing:.04em;}
.update-list h3{font-size:16.5px;margin-bottom:6px;}
.update-list p{font-size:13.5px;color:var(--text-2);line-height:1.7;}
@media (max-width:768px){
  .update-list li{grid-template-columns:minmax(0,1fr);gap:12px;}
}

/* ============ 排行 ============ */
.rank-list{display:flex;flex-direction:column;gap:12px;}
.rank-list li{
  display:grid;grid-template-columns:56px minmax(0,1fr) 74px;
  gap:18px;align-items:center;
  padding:18px 22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  box-shadow:var(--shadow);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.rank-list li:hover{transform:translateX(4px);border-color:#cfe2f7;}
.rank-num{font-size:17px;font-weight:700;color:var(--brand);letter-spacing:.05em;}
.rank-list li:nth-child(-n+3) .rank-num{color:var(--accent);}
.rank-body h4{font-size:16px;margin-bottom:4px;}
.rank-body p{font-size:13.5px;color:var(--text-2);line-height:1.65;}
.rank-score{font-size:15px;font-weight:700;color:var(--brand-d);text-align:right;}
@media (max-width:560px){
  .rank-list li{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .rank-score{display:none;}
}

/* ============ 数据卡 ============ */
.stat-card{text-align:left;padding:30px 28px;}
.stat-num{font-size:34px;font-weight:700;color:var(--brand-d);line-height:1.1;letter-spacing:.01em;}
.stat-unit{font-size:14px;font-weight:600;color:var(--text-2);margin-left:8px;}
.stat-card p{margin-top:12px;}
.disclaimer{margin-top:20px;font-size:12.5px;color:#8a9aab;letter-spacing:.02em;}

/* ============ 证言 ============ */
.quote-card{display:flex;flex-direction:column;gap:20px;}
.quote-card blockquote{
  margin:0;font-size:14.5px;line-height:1.85;color:var(--text);
  padding-left:16px;border-left:3px solid var(--brand-l);
}
.quote-card figcaption{display:flex;align-items:center;gap:12px;margin-top:auto;}
.avatar{
  width:40px;height:40px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:var(--brand-l);color:var(--brand);
  font-weight:700;font-size:15px;
}
.quote-card figcaption strong{display:block;font-size:14px;}
.quote-card figcaption em{display:block;font-style:normal;font-size:12.5px;color:var(--text-2);}

/* ============ 人群 ============ */
.aud-card{display:flex;gap:16px;align-items:flex-start;padding:22px;}
.aud-icon{
  width:44px;height:44px;flex:none;border-radius:12px;
  display:grid;place-items:center;
  background:var(--brand-l);color:var(--brand);font-size:17px;
}
.aud-card:nth-child(2n) .aud-icon{background:var(--accent-l);color:#b9631f;}
.aud-card h3{font-size:16.5px;margin-bottom:6px;}
.aud-card p{font-size:13.5px;}

/* ============ 指标条 ============ */
.metrics{background:rgba(27,95,168,.06);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0;}
.metrics-inner{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;}
.metric{text-align:center;}
.metric-num{display:block;font-family:var(--mono);font-size:24px;font-weight:700;color:var(--brand-d);letter-spacing:.02em;}
.metric-label{display:block;margin-top:6px;font-size:13px;color:var(--text-2);}
@media (max-width:991px){
  .metrics-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 16px;}
}
@media (max-width:480px){
  .metrics-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metric-num{font-size:20px;}
}

/* ============ 资源中心 ============ */
.res-card{display:flex;flex-direction:column;gap:14px;}
.res-icon{
  width:46px;height:46px;border-radius:12px;
  display:grid;place-items:center;font-size:18px;
  background:var(--brand-l);color:var(--brand);
}
.res-card h3{font-size:17.5px;}
.res-card p{flex:1;}
.res-card .link-read{align-self:flex-start;}

/* ============ 订阅 ============ */
.subscribe{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);
  padding:40px 44px;
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:40px;align-items:center;
  background-image:url("/assets/images/backpic/back-3.jpg");
  background-size:cover;background-position:center;
  position:relative;overflow:hidden;
}
.subscribe::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 55%,rgba(232,241,251,.82) 100%);
}
.subscribe > *{position:relative;z-index:2;}
.subscribe h2{font-size:26px;margin-bottom:12px;}
.subscribe p{font-size:14.5px;line-height:1.85;color:var(--text-2);}
.sub-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;}
.sub-form input{
  height:50px;border-radius:var(--radius-sm);
  border:1.5px solid var(--line);background:#fff;
  padding:0 16px;font-size:15px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.12);}
@media (max-width:991px){
  .subscribe{grid-template-columns:minmax(0,1fr);gap:24px;padding:28px 22px;}
}
@media (max-width:560px){
  .sub-form{grid-template-columns:minmax(0,1fr);}
  .sub-form .btn{width:100%;}
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.faq-item .faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;
  font-size:16px;font-weight:600;color:var(--text);text-align:left;
  transition:background .2s var(--ease);
}
.faq-item .faq-q:hover{background:var(--brand-l);}
.faq-item .faq-q i{color:var(--brand);transition:transform .25s var(--ease);font-size:14px;}
.faq-item.is-open .faq-q{background:var(--brand-l);color:var(--brand-d);}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{display:none;padding:4px 24px 22px;background:var(--bg);font-size:14.5px;line-height:1.85;color:var(--text-2);}
.faq-item.is-open .faq-a{display:block;}

/* ============ CTA 收尾 ============ */
.cta-band{
  background:linear-gradient(120deg,var(--brand-l) 0%,#dceafa 100%);
  border:1px solid #cfe2f7;border-radius:20px;
  padding:56px 48px;text-align:center;
}
.cta-band h2{font-size:29px;margin-bottom:14px;}
.cta-band p{font-size:15px;line-height:1.85;color:var(--text-2);max-width:640px;margin:0 auto;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:28px;}
@media (max-width:640px){
  .cta-band{padding:36px 22px;}
  .cta-band h2{font-size:22px;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-d);color:#c8dbf0;padding:66px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.4fr) minmax(0,3.2fr);gap:40px;}
.footer-logo{display:inline-block;font-size:20px;font-weight:700;color:#fff;letter-spacing:.08em;margin-bottom:16px;}
.footer-col p{font-size:13.5px;line-height:1.85;color:#a9c4e0;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:13.5px;color:#a9c4e0;}
.footer-col ul a:hover{color:#fff;}
.footer-form{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;margin-top:6px;}
.footer-form input{
  height:44px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;
  padding:0 14px;font-size:14px;outline:none;
}
.footer-form input::placeholder{color:#8fb0d2;}
.footer-form input:focus{border-color:#7fb0e2;background:rgba(255,255,255,.14);}
.footer-form .btn{padding:11px 20px;font-size:14px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:#93b3d4;}
.footer-links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-links a{font-size:12.5px;color:#93b3d4;}
.footer-links a:hover{color:#fff;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* ============ 移动端常驻 CTA ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;gap:14px;
  height:64px;padding:0 18px;
  background:rgba(255,255,255,.96);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,66,116,.1);
  transform:translateY(100%);
  opacity:0;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.sticky-cta.is-visible{transform:translateY(0);opacity:1;}
.sticky-cta span{font-size:13px;color:var(--text-2);flex:1;line-height:1.4;}
.sticky-cta .btn{padding:11px 18px;font-size:14px;}
@media (max-width:991px){
  .sticky-cta{display:flex;}
  body{padding-bottom:64px;}
}

/* roulang page: category1 */
:root{
 --brand:#1B5FA8;
 --brand-d:#134274;
 --brand-l:#E8F1FB;
 --accent:#E8863A;
 --accent-l:#FDF1E6;
 --bg:#F6F9FD;
 --surface:#FFFFFF;
 --line:#E3ECF6;
 --text:#1C2A3A;
 --text-2:#5B6B7C;
 --ok:#2E9E6B;
 --warn:#D9A11B;
 --radius:14px;
 --radius-sm:10px;
 --radius-pill:999px;
 --shadow:0 6px 20px rgba(19,66,116,.07);
 --shadow-h:0 16px 36px rgba(19,66,116,.13);
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
 --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
 --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;padding:0;
 font-family:var(--font);
 font-size:16px;line-height:1.75;
 color:var(--text);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-d);}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.32;font-weight:700;color:var(--text);}
p{margin:0 0 12px;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
 outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 容器 ============ */
.grid-container{max-width:1200px;padding-left:40px;padding-right:40px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px;}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.97);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{
 background:rgba(255,255,255,.88);
 backdrop-filter:saturate(170%) blur(10px);
 -webkit-backdrop-filter:saturate(170%) blur(10px);
 box-shadow:0 8px 24px rgba(19,66,116,.09);
}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
 width:36px;height:36px;flex:none;display:grid;place-items:center;
 border-radius:10px;
 background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
 box-shadow:0 6px 14px rgba(27,95,168,.28);
}
.brand-mark svg{width:21px;height:21px;display:block;}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
 position:relative;display:inline-block;
 padding:8px 14px;border-radius:8px;
 font-size:15px;font-weight:500;color:var(--text-2);
 transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:var(--brand-l);}
.main-nav a.active{color:var(--brand);font-weight:700;}
.main-nav a.active::after{
 content:"";position:absolute;left:14px;right:14px;bottom:1px;
 height:3px;border-radius:3px;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;
 border:1px solid var(--line);background:#fff;color:var(--brand);
 font-size:17px;line-height:1;
}
.nav-toggle:hover{background:var(--brand-l);}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 22px;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .wrap{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer a{
 padding:12px 14px;border-radius:10px;
 font-size:15px;font-weight:500;color:var(--text-2);
 border:1px solid transparent;
}
.mobile-drawer a:hover,.mobile-drawer a.active{
 color:var(--brand);background:var(--brand-l);border-color:#d6e6f8;
}
.mobile-drawer .btn{margin:10px 0 0;color:#fff;text-align:center;}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:13px 26px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;line-height:1.2;
 border:1.5px solid transparent;text-align:center;
 transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(27,95,168,.22);}
.btn-primary:hover{background:var(--brand-d);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(19,66,116,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-l);color:var(--brand-d);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
 display:inline-flex;align-items:center;gap:6px;
 padding:4px 12px;border-radius:var(--radius-pill);
 font-size:12px;font-weight:600;letter-spacing:.02em;
 background:var(--brand-l);color:var(--brand);
}
.badge-accent{background:var(--accent-l);color:#b9631f;}
.chip{
 display:inline-flex;align-items:center;
 padding:7px 15px;border-radius:var(--radius-pill);
 font-size:13px;font-weight:500;
 background:#fff;border:1px solid var(--line);color:var(--text-2);
 transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l);transform:translateY(-2px);}

/* ============ 板块骨架 ============ */
.section{padding:88px 0;position:relative;}
.section--alt{background:#fff;}
.section--tight{padding:60px 0;}
.sec-head{margin-bottom:38px;}
.sec-title{position:relative;padding-left:22px;font-size:29px;letter-spacing:.01em;margin-bottom:12px;}
.sec-title::before{
 content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
 background:linear-gradient(180deg,var(--brand) 0%,var(--accent) 100%);
}
.sec-title::after{
 content:"";position:absolute;left:7px;top:50%;transform:translateY(-50%);
 width:6px;height:6px;border-radius:1px;background:var(--accent);
}
.sec-desc{font-size:15px;color:var(--text-2);max-width:760px;margin:0;}

/* ============ 分类页头 ============ */
.page-head{
 background:linear-gradient(180deg,#EFF7FF 0%,var(--bg) 100%);
 border-bottom:1px solid var(--line);
 padding:40px 0 38px;
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:16px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#B9C7D6;}
.crumb-cur{color:var(--brand);font-weight:600;}
.page-title{font-size:40px;line-height:1.25;letter-spacing:.01em;margin-bottom:14px;}
.page-sub{font-size:16px;color:var(--text-2);max-width:860px;margin:0;}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}

/* ============ 筛选排序条 ============ */
.filter-bar{
 background:#fff;border-bottom:1px solid var(--line);
 position:sticky;top:70px;z-index:60;
 transition:box-shadow .25s var(--ease);
}
.filter-bar.is-stuck{box-shadow:0 8px 20px rgba(19,66,116,.08);}
.filter-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;flex-wrap:wrap;}
.filter-pills{display:flex;gap:8px;flex-wrap:wrap;}
.pill-chip{
 display:inline-flex;align-items:center;
 padding:7px 16px;border-radius:var(--radius-pill);
 border:1px solid var(--line);background:#fff;
 font-size:13px;font-weight:500;color:var(--text-2);
 transition:all .2s var(--ease);
}
.pill-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l);}
.pill-chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.filter-sort{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);white-space:nowrap;}
.filter-sort select{
 height:40px;border-radius:var(--radius-sm);
 border:1px solid var(--line);background-color:#fff;
 padding:0 36px 0 13px;font-size:14px;color:var(--text);
 -webkit-appearance:none;appearance:none;
 background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235B6B7C' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
 background-repeat:no-repeat;background-position:right 13px center;background-size:12px 8px;
 transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.filter-sort select:hover{border-color:#C6DBF1;}
.filter-sort select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.12);}

/* ============ 卡片 ============ */
.card{
 position:relative;display:flex;flex-direction:column;height:100%;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow);overflow:hidden;
 transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#D5E5F6;}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E8EEF7;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-tag{
 position:absolute;left:12px;top:12px;
 padding:4px 10px;border-radius:6px;
 background:rgba(232,241,251,.94);color:var(--brand);
 font-size:12px;font-weight:600;letter-spacing:.02em;
}
.card-rarity{position:absolute;right:0;top:14px;width:3px;height:28px;background:var(--accent);border-radius:3px 0 0 3px;}
.card-body{padding:20px 22px 20px;display:flex;flex-direction:column;flex:1;}
.card-title{
 font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-title a{color:var(--text);}
.card-title a:hover{color:var(--brand);}
.card-desc{
 font-size:14px;line-height:1.7;color:var(--text-2);margin:0 0 16px;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
 margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 font-size:13px;color:var(--text-2);
}
.card-foot .date{font-family:var(--mono);letter-spacing:.02em;}
.read-link{font-weight:600;font-size:13px;}
.read-link:hover{text-decoration:underline;text-underline-offset:4px;}
.list-more{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:44px;}
.list-more small{font-size:12.5px;color:var(--text-2);}

/* ============ 分类导读 ============ */
.intro-block{display:grid;grid-template-columns:230px minmax(0,1fr);gap:44px;align-items:start;}
.intro-label{
 background:linear-gradient(145deg,var(--brand) 0%,var(--brand-d) 100%);
 color:#fff;border-radius:var(--radius);padding:24px 22px;
 box-shadow:0 12px 26px rgba(19,66,116,.18);
}
.intro-label strong{display:block;font-size:17px;font-weight:700;letter-spacing:.08em;}
.intro-label span{display:block;margin-top:10px;font-size:12px;letter-spacing:.06em;color:#BBD4EF;font-family:var(--mono);}
.intro-text h3{font-size:21px;margin-bottom:14px;}
.intro-text p{font-size:15.5px;line-height:1.95;color:var(--text-2);margin:0;}

/* ============ 热门排行 ============ */
.rank-list{border-top:1px solid var(--line);}
.rank-item{
 display:flex;gap:18px;align-items:flex-start;
 padding:18px 6px;border-bottom:1px solid var(--line);
 border-radius:8px;
 transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.rank-item:hover{background:#fff;padding-left:14px;}
.rank-no{
 flex:none;width:38px;
 font-family:var(--mono);font-size:18px;font-weight:700;line-height:1.6;
 color:#A6BED9;letter-spacing:.04em;
}
.rank-item:nth-child(-n+3) .rank-no{color:var(--accent);}
.rank-main{min-width:0;}
.rank-title{font-size:16px;font-weight:600;color:var(--text);display:inline-block;}
.rank-title:hover{color:var(--brand);}
.rank-sum{font-size:13.5px;color:var(--text-2);margin:4px 0 0;}

/* ============ 标签云 ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ FAQ ============ */
.faq-accordion{margin:0;border:0;background:transparent;}
.faq-accordion .accordion-item{
 border:1px solid var(--line);border-radius:12px;background:#fff;
 box-shadow:var(--shadow);margin-bottom:12px;overflow:hidden;
 transition:box-shadow .2s var(--ease);
}
.faq-accordion .accordion-item:hover{box-shadow:var(--shadow-h);}
.faq-accordion .accordion-title{
 display:block;border:0;background:#fff;
 padding:19px 56px 19px 22px;
 font-size:16px;font-weight:600;color:var(--text);position:relative;
 transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-accordion .accordion-title:hover{background:var(--brand-l);color:var(--brand-d);}
.faq-accordion .accordion-title::before{
 content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
 position:absolute;right:22px;top:50%;transform:translateY(-50%);
 font-size:13px;color:var(--brand);margin:0;
 transition:transform .25s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);}
.faq-accordion .accordion-content{
 border:0;background:var(--bg);padding:0 22px 20px;
 color:var(--text-2);font-size:14.5px;line-height:1.85;
}
.faq-accordion .accordion-content p{margin:0;}

/* ============ 专题宽卡 ============ */
.topic-card{
 display:flex;align-items:center;justify-content:space-between;gap:26px;
 padding:26px 30px;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);
 clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,0 100%);
 transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.topic-card:hover{transform:translateY(-3px);border-color:#CFE1F5;}
.topic-text h3{font-size:18px;margin-bottom:8px;}
.topic-text h3 a{color:var(--text);}
.topic-text h3 a:hover{color:var(--brand);}
.topic-text p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75;}
.topic-meta{flex:none;text-align:right;font-size:12.5px;color:var(--text-2);}
.topic-meta .num{display:block;font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand);}

/* ============ CTA 通栏 ============ */
.cta-band{
 background:var(--brand-l);
 border-top:1px solid #D6E6F8;
 border-bottom:1px solid #D6E6F8;
 padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-copy h2{font-size:27px;margin-bottom:12px;}
.cta-copy p{font-size:15px;color:var(--text-2);margin:0;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
.cta-actions small{font-size:12.5px;color:var(--text-2);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-d);color:#C7DBF2;padding:62px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:40px;}
.footer-logo{display:inline-block;font-size:20px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:12px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col p{font-size:13.5px;line-height:1.85;color:#A8C4E4;margin:0;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:13.5px;color:#C7DBF2;}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-form{display:flex;gap:8px;margin-top:14px;}
.footer-form input{
 flex:1;min-width:0;height:44px;border-radius:10px;
 border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);
 color:#fff;padding:0 12px;font-size:14px;
 transition:border-color .2s var(--ease),background .2s var(--ease);
}
.footer-form input::placeholder{color:#8FB0D6;}
.footer-form input:focus{outline:none;border-color:#7FB4E8;background:rgba(255,255,255,.14);}
.footer-form .btn{
 padding:0 18px;height:44px;font-size:14px;
 background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:none;
}
.footer-form .btn:hover{background:#d1762d;color:#fff;transform:translateY(-1px);}
.footer-bottom{
 margin-top:50px;border-top:1px solid rgba(255,255,255,.12);
 padding:22px 0 26px;
 display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:#9DBBDF;}
.footer-links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-links a{font-size:13px;color:#9DBBDF;}
.footer-links a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .grid-container,.wrap{padding-left:28px;padding-right:28px;}
 .page-title{font-size:32px;}
 .sec-title{font-size:25px;}
 .section{padding:72px 0;}
 .intro-block{grid-template-columns:1fr;gap:26px;}
 .intro-label{display:flex;align-items:center;justify-content:space-between;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:920px){
 .main-nav{display:none;}
 .header-actions .btn{display:none;}
 .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
 .filter-bar{top:70px;}
}
@media (max-width:768px){
 .grid-container,.wrap{padding-left:20px;padding-right:20px;}
 .topbar{height:64px;}
 .brand-name{font-size:18px;}
 .brand-mark{width:32px;height:32px;}
 .page-head{padding:28px 0 30px;}
 .page-title{font-size:26px;}
 .page-sub{font-size:14.5px;}
 .sec-title{font-size:22px;}
 .section{padding:56px 0;}
 .section--tight{padding:44px 0;}
 .filter-inner{padding:12px 0;}
 .filter-sort{width:100%;justify-content:space-between;}
 .filter-sort select{flex:1;}
 .cta-band{padding:48px 0;}
 .cta-inner{flex-direction:column;align-items:flex-start;gap:22px;}
 .cta-copy h2{font-size:22px;}
 .cta-actions{width:100%;}
 .cta-actions .btn{width:100%;}
 .footer-grid{grid-template-columns:1fr;gap:30px;}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
 .topic-card{flex-direction:column;align-items:flex-start;gap:14px;padding:22px 22px;}
 .topic-meta{text-align:left;}
}
@media (max-width:520px){
 .page-title{font-size:23px;}
 .card-body{padding:18px;}
 .card-title{font-size:16px;}
 .rank-item{gap:12px;}
 .rank-no{width:30px;font-size:16px;}
 .footer-form{flex-direction:column;}
 .footer-form .btn{width:100%;}
}