/* roulang page: index */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-300:#4C7BF0;
  --brand-100:#E6EDFD;
  --mint:#12B3A0;
  --amber:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-700:#26364B;
  --ink-500:#5A6B80;
  --ink-400:#8593A6;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --panel:#F1F5FD;
  --line:#E4EAF2;
  --line-strong:#D8E1EE;
  --img-bg:#EEF2F8;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05),0 6px 20px rgba(14,26,43,.06);
  --shadow-md:0 2px 4px rgba(14,26,43,.06),0 14px 32px rgba(14,26,43,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-600);}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-title{font-size:24px;line-height:1.25;}
@media(min-width:1024px){.section-title{font-size:32px;}}
.section-desc{margin-top:12px;color:var(--ink-500);font-size:15px;max-width:560px;}
.link-arrow{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.link-arrow span{transition:transform .16s ease;}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink-700);border:1px solid var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:#EAF0FF;color:var(--ink-900);transform:translateY(-1px);}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:500;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(14,26,43,.06);}
.nav-inner{max-width:var(--container);margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:24px;}
@media(min-width:768px){.nav-inner{padding:0 32px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.brand-divider{width:1px;height:14px;background:var(--line-strong);}
.brand-sub{font-size:12px;color:var(--ink-400);}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px;}
@media(min-width:1024px){.nav-links{display:flex;}}
.nav-link{position:relative;padding:8px 12px;font-size:14px;font-weight:500;color:var(--ink-700);border-radius:8px;}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand-600);opacity:0;transition:opacity .16s ease;}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{opacity:.5;}
.nav-link.is-active{color:var(--brand-600);}
.nav-link.is-active::after{opacity:1;}
.nav-right{display:none;align-items:center;gap:12px;margin-left:auto;}
@media(min-width:1024px){.nav-right{display:flex;}}
.nav-search{display:flex;align-items:center;gap:8px;width:224px;height:38px;padding:0 10px;border-radius:10px;background:#F2F5FA;border:1.5px solid transparent;transition:background .16s ease,border-color .16s ease,box-shadow .16s ease;}
.nav-search:focus-within{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(42,92,223,.12);}
.nav-search svg{width:16px;height:16px;color:var(--ink-400);flex-shrink:0;}
.nav-search input{width:100%;border:none;background:transparent;outline:none;font-size:13px;color:var(--ink-700);}
.nav-search input::placeholder{color:var(--ink-400);}
.kbd{font-size:11px;color:var(--ink-400);border:1px solid var(--line-strong);border-radius:5px;padding:1px 5px;line-height:1.4;flex-shrink:0;font-variant-numeric:tabular-nums;}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);margin-left:auto;color:var(--ink-700);}
@media(min-width:1024px){.nav-toggle{display:none;}}
.drawer{position:fixed;inset:0;z-index:90;background:#fff;padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;}
.drawer[hidden]{display:none;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-700);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{font-size:18px;font-weight:600;color:var(--ink-900);padding:12px 4px;border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand-600);}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border-radius:10px;background:#F2F5FA;border:1.5px solid transparent;}
.drawer-search input{border:none;background:transparent;outline:none;width:100%;font-size:14px;}

/* ---------- hero ---------- */
.hero{padding:48px 0 0;background:linear-gradient(180deg,#FBFCFE 0%,var(--bg) 100%);}
@media(min-width:1024px){.hero{padding:72px 0 0;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;}}
.badge{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:500;letter-spacing:.02em;}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block;}
.hero h1{font-size:30px;line-height:1.2;margin-top:20px;letter-spacing:-.02em;}
@media(min-width:1024px){.hero h1{font-size:44px;line-height:1.15;}}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.75;color:var(--ink-500);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-trust{margin-top:20px;font-size:13px;color:var(--ink-400);}
.hero-trust i{font-style:normal;margin:0 6px;color:var(--line-strong);}

/* phone frame */
.hero-visual{position:relative;display:flex;justify-content:center;padding:12px 0 8px;}
.phone{position:relative;width:260px;aspect-ratio:9/16;border-radius:28px;border:8px solid #fff;background:var(--img-bg);box-shadow:var(--shadow-md);overflow:hidden;}
@media(min-width:640px){.phone{width:320px;}}
.phone img{width:100%;height:100%;object-fit:cover;}
.phone::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,26,43,0) 38%,rgba(14,26,43,.72) 100%);}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;z-index:2;box-shadow:0 8px 20px rgba(14,26,43,.2);transition:transform .18s ease;}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);}
.play-btn svg{width:18px;height:18px;color:var(--ink-900);margin-left:3px;}
.phone-bar{position:absolute;left:12px;right:12px;bottom:14px;z-index:2;display:flex;align-items:center;gap:8px;color:#fff;}
.phone-avatar{width:24px;height:24px;border-radius:50%;background:var(--brand-300);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0;}
.phone-name{font-size:12px;font-weight:600;line-height:1.3;}
.phone-views{font-size:11px;color:rgba(255,255,255,.78);line-height:1.3;font-variant-numeric:tabular-nums;}
.phone-side{position:absolute;right:10px;bottom:64px;z-index:2;display:flex;flex-direction:column;gap:10px;}
.side-chip{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.24);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;color:#fff;}
.side-chip svg{width:14px;height:14px;}
.float-card{display:none;}
@media(min-width:1280px){
  .float-card{display:block;position:absolute;width:132px;border-radius:14px;overflow:hidden;box-shadow:var(--shadow-md);border:4px solid #fff;background:#fff;}
  .float-card img{width:100%;aspect-ratio:9/16;object-fit:cover;}
  .float-card.left{left:0;top:32px;transform:rotate(-8deg);}
  .float-card.right{right:0;bottom:40px;transform:rotate(6deg);}
}

/* stats */
.stat-bar{margin-top:40px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(2,1fr);}
@media(min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr);}}
.stat-item{padding:20px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
@media(min-width:768px){.stat-item{border-bottom:none;}.stat-item:last-child{border-right:none;}}
.stat-item:nth-child(2n){border-right:none;}
@media(min-width:768px){.stat-item:nth-child(2n){border-right:1px solid var(--line);}}
.stat-num{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.2;font-variant-numeric:tabular-nums;}
@media(min-width:1024px){.stat-num{font-size:32px;}}
.stat-label{margin-top:4px;font-size:13px;color:var(--ink-400);}

/* ---------- clip cards ---------- */
.clip-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.clip-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.clip-grid{grid-template-columns:repeat(3,1fr);}}
.clip-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:12px;box-shadow:var(--shadow-sm);transition:transform .16s ease,box-shadow .16s ease;}
.clip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.clip-media{position:relative;border-radius:12px;overflow:hidden;background:var(--img-bg);aspect-ratio:3/4;}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.clip-card:hover .clip-media img{transform:scale(1.04);}
.clip-time{position:absolute;left:8px;top:8px;padding:2px 7px;border-radius:999px;background:rgba(14,26,43,.62);color:#fff;font-size:11px;font-variant-numeric:tabular-nums;}
.clip-cat{position:absolute;right:8px;top:8px;padding:2px 8px;border-radius:999px;background:rgba(255,255,255,.92);color:var(--brand-700);font-size:11px;font-weight:500;}
.clip-body{padding:14px 4px 4px;}
.clip-title{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-meta{margin-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);}
.clip-meta .author{display:flex;align-items:center;gap:6px;}
.clip-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);}
.bookmark{width:28px;height:28px;border-radius:8px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-400);transition:all .16s ease;}
.bookmark:hover{border-color:var(--brand-600);color:var(--brand-600);}

/* ---------- checklist ---------- */
.checklist-wrap{background:var(--panel);border-radius:var(--radius-lg);padding:32px 24px;}
@media(min-width:1024px){.checklist-wrap{padding:48px 40px;}}
.checklist-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.checklist-grid{grid-template-columns:5fr 7fr;gap:40px;align-items:start;}}
.checklist-intro .section-title{margin-top:0;}
.checklist-list{background:#fff;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);}
.check-row{display:flex;align-items:flex-start;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line);transition:background .16s ease;}
.check-row:last-child{border-bottom:none;}
.check-row:hover{background:#FAFCFF;}
.check-row:hover .check-arrow{transform:translateX(4px);color:var(--brand-600);}
.check-num{width:28px;height:28px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-variant-numeric:tabular-nums;}
.check-main{flex:1;}
.check-title{font-size:15px;font-weight:600;color:var(--ink-900);}
.check-desc{margin-top:2px;font-size:13px;color:var(--ink-500);line-height:1.6;}
.check-arrow{color:var(--ink-400);transition:transform .16s ease,color .16s ease;flex-shrink:0;margin-top:4px;}

/* ---------- category tiles ---------- */
.tile-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.tile-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.tile-grid{grid-template-columns:repeat(4,1fr);}}
.tile{position:relative;display:block;border-radius:var(--radius-card);overflow:hidden;height:180px;background:var(--img-bg);box-shadow:var(--shadow-sm);}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tile:hover img{transform:scale(1.05);}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,26,43,.05) 20%,rgba(14,26,43,.78) 100%);}
.tile-text{position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff;}
.tile-name{font-size:17px;font-weight:700;}
.tile-desc{margin-top:2px;font-size:12px;color:rgba(255,255,255,.82);line-height:1.5;}

/* ---------- voices ---------- */
.voice-tools{display:none;gap:8px;}
@media(min-width:1024px){.voice-tools{display:flex;}}
.circle-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--ink-700);transition:all .16s ease;}
.circle-btn:hover{border-color:var(--brand-600);color:var(--brand-600);}
.voice-scroller{position:relative;}
.voice-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none;}
.voice-track::-webkit-scrollbar{display:none;}
.voice-card{flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-sm);}
@media(min-width:768px){.voice-card{flex:0 0 320px;}}
.voice-head{display:flex;align-items:center;gap:10px;}
.voice-avatar{width:36px;height:36px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;}
.voice-name{font-size:14px;font-weight:600;color:var(--ink-900);}
.voice-role{font-size:12px;color:var(--ink-400);}
.voice-quote{margin-top:14px;font-size:14px;line-height:1.8;color:var(--ink-500);}
.voice-stars{margin-top:14px;font-size:12px;color:var(--amber);letter-spacing:2px;}

/* ---------- cms posts ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm);transition:transform .16s ease,box-shadow .16s ease;}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.post-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.post-date{font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;white-space:nowrap;}
.post-title{margin-top:14px;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-title{color:var(--brand-600);}
.post-excerpt{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-more{margin-top:auto;padding-top:18px;font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.post-card:hover .post-more span{transform:translateX(4px);}
.post-more span{transition:transform .16s ease;}
.empty-state{border:2px dashed var(--line-strong);border-radius:var(--radius-card);padding:48px 24px;text-align:center;background:#FBFCFE;}
.empty-state svg{width:34px;height:34px;color:var(--ink-400);margin:0 auto 12px;}
.empty-state p{font-size:14px;color:var(--ink-500);}
.empty-state .btn{margin-top:18px;}

/* ---------- faq ---------- */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px;box-shadow:var(--shadow-sm);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{flex-shrink:0;width:22px;height:22px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:400;color:var(--ink-400);transition:transform .2s ease,color .2s ease;}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--brand-600);}
.faq-item[open] summary{color:var(--brand-600);}
.faq-body{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-500);}

/* ---------- cta ---------- */
.cta-card{background:var(--ink-900);border-radius:var(--radius-lg);padding:32px 24px;display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.cta-card{grid-template-columns:7fr 5fr;align-items:center;padding:48px 44px;gap:40px;}}
.cta-card h2{color:#fff;font-size:24px;line-height:1.3;}
@media(min-width:1024px){.cta-card h2{font-size:30px;}}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.75;color:#9FB0C6;}
.cta-form{display:flex;flex-direction:column;gap:10px;}
@media(min-width:640px){.cta-form{flex-direction:row;}}
.cta-input{height:44px;flex:1;border-radius:var(--radius-btn);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;padding:0 14px;font-size:14px;outline:none;transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;}
.cta-input::placeholder{color:#8593A6;}
.cta-input:focus{background:rgba(255,255,255,.12);border-color:var(--brand-300);box-shadow:0 0 0 3px rgba(76,123,240,.24);}
.cta-hint{grid-column:1/-1;margin-top:6px;font-size:12px;color:#8593A6;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#9FB0C6;padding:56px 0 0;margin-top:56px;}
@media(min-width:1024px){.site-footer{padding-top:72px;margin-top:96px;}}
.footer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}
@media(min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr 1fr;}}
.footer-brand{grid-column:1/-1;}
@media(min-width:1024px){.footer-brand{grid-column:auto;}}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-sub{color:#6F8199;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;max-width:300px;color:#9FB0C6;}
.footer-contact{margin-top:16px;font-size:14px;color:#9FB0C6;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em;}
.footer-col ul{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#9FB0C6;transition:color .12s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;}
.footer-copy{font-size:13px;color:#6F8199;}
.footer-copy a{color:#9FB0C6;}
.socials{display:flex;gap:10px;}
.social{width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;color:#9FB0C6;transition:all .16s ease;}
.social:hover{color:#fff;border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);}
.social svg{width:15px;height:15px;}

/* roulang page: article */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-500:#4C7BF0;
  --brand-100:#E6EDFD;
  --brand-50:#F1F5FD;
  --teal:#12B3A0;
  --amber:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-700:#26364B;
  --body-text:#5A6B80;
  --muted:#8593A6;
  --line:#E4EAF2;
  --line-strong:#D8E1EE;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --panel:#F1F5FD;
  --dark:#0E1A2B;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05), 0 6px 20px rgba(14,26,43,.06);
  --shadow-md:0 2px 4px rgba(14,26,43,.06), 0 14px 32px rgba(14,26,43,.10);
  --ease:160ms ease;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-700);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------------- Header ---------------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.is-stuck{box-shadow:0 1px 2px rgba(14,26,43,.05), 0 8px 24px rgba(14,26,43,.06)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:26px}
@media (min-width:768px){.nav-inner{padding:0 32px}}
.brand{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;letter-spacing:-.02em;
  box-shadow:0 4px 12px rgba(42,92,223,.28);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-divider{width:1px;height:16px;background:var(--line-strong)}
.brand-sub{font-size:12px;color:var(--muted);font-weight:500;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500;
  color:var(--ink-700);transition:color var(--ease),background-color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand-600);opacity:0;transform:scaleX(.4);transition:opacity var(--ease),transform var(--ease);
}
.nav-link:hover{color:var(--brand-600);background:#F7F9FE}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;width:224px;height:38px;padding:0 10px;
  background:#F2F5FA;border:1.5px solid transparent;border-radius:10px;cursor:text;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:13px;color:var(--ink-700);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(42,92,223,.12)}
.kbd{
  flex:0 0 auto;font-size:11px;color:var(--muted);border:1px solid var(--line-strong);
  border-radius:999px;padding:1px 6px;line-height:1.5;background:#fff;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.20)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 24px rgba(42,92,223,.26)}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:10px;background:#fff;color:var(--ink-700);cursor:pointer;
  margin-left:auto;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600)}

@media (max-width:1023.98px){
  .nav-inner{height:56px;gap:12px}
  .nav-links{display:none}
  .nav-right{display:none}
  .nav-toggle{display:inline-flex}
  body.nav-open .nav-inner{flex-wrap:wrap;height:auto;padding-bottom:18px;padding-top:10px}
  body.nav-open .nav-toggle{margin-left:auto}
  body.nav-open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    width:100%;order:3;margin:8px 0 0;padding-top:10px;border-top:1px solid var(--line);
  }
  body.nav-open .nav-link{padding:12px 10px;font-size:17px;font-weight:500;border-radius:10px}
  body.nav-open .nav-link::after{display:none}
  body.nav-open .nav-link.is-active{background:var(--brand-100)}
  body.nav-open .nav-right{
    display:flex;flex-direction:column;align-items:stretch;gap:12px;
    width:100%;order:4;margin:14px 0 0;
  }
  body.nav-open .nav-search{width:100%;height:44px}
  body.nav-open .nav-right .btn{width:100%}
}

/* ---------------- Article head ---------------- */
.article-hero{padding:28px 0 0}
.breadcrumb{font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow:hidden}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C3CDDD}
.breadcrumb .current{
  color:var(--ink-700);font-weight:500;max-width:52vw;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}
.article-head{margin-top:26px;max-width:860px}
.pill{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:500;letter-spacing:.02em;
}
.article-head h1{
  margin-top:14px;font-size:24px;line-height:1.32;font-weight:700;color:var(--ink-900);letter-spacing:-.02em;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
@media (min-width:768px){.article-head h1{font-size:32px;-webkit-line-clamp:2}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;font-size:13px;color:var(--muted)}
.meta-row i{font-style:normal;color:#C3CDDD}
.cover{margin:28px 0 0}
.cover .cover-frame{
  width:100%;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#EEF2F8;
  box-shadow:var(--shadow-sm);
}
.cover .cover-frame img{width:100%;height:100%;object-fit:cover}
.cover figcaption{margin-top:12px;font-size:12px;color:var(--muted);text-align:center;line-height:1.7}

/* ---------------- Article layout ---------------- */
.article-section{padding:40px 0 72px}
@media (min-width:768px){.article-section{padding:56px 0 96px}}
.article-wrap{display:grid;grid-template-columns:1fr;gap:44px}
@media (min-width:1024px){.article-wrap{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px}}
.article-main{min-width:0}
.article-body{
  font-size:16px;line-height:1.9;color:var(--ink-700);
  overflow-wrap:break-word;word-break:break-word;
}
@media (min-width:768px){.article-body{font-size:17px}}
.article-body > *{max-width:72ch}
.article-body p{margin:0 0 1.35em}
.article-body h2{
  font-size:22px;line-height:1.4;font-weight:700;color:var(--ink-900);
  margin:2.2em 0 .9em;padding-left:12px;border-left:4px solid var(--brand-600);
}
@media (min-width:768px){.article-body h2{font-size:24px;margin-top:2.4em}}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:1.9em 0 .7em}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:1.6em 0 .6em}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--brand-600)}
.article-body ol li::marker{color:var(--brand-600);font-weight:600}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body blockquote{
  margin:1.7em 0;padding:18px 20px;background:var(--panel);
  border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em auto;box-shadow:var(--shadow-sm)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;font-size:15px;margin:1.6em 0}
.article-body th{
  background:var(--panel);color:var(--ink-900);font-weight:600;text-align:left;
  padding:12px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body td{padding:12px;border-bottom:1px solid var(--line);min-width:120px}
.article-body tbody tr:nth-child(even) td{background:#FAFCFF}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

.empty-state{
  max-width:72ch;background:#fff;border:2px dashed var(--line-strong);border-radius:var(--radius);
  padding:48px 24px;text-align:center;
}
.empty-state h2{
  border:0;padding:0;margin:0 0 12px;font-size:20px;color:var(--ink-900);
}
.empty-state p{color:var(--body-text);font-size:15px;margin:0 0 20px}

/* ---------------- Share ---------------- */
.share-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.share-label{font-size:13px;color:var(--muted)}
.share-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.share-actions button{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line-strong);
  background:#fff;color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.share-actions button svg{width:16px;height:16px}
.share-actions button:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* ---------------- Related ---------------- */
.related{margin-top:44px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.sec-head h2{font-size:24px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
@media (min-width:768px){.sec-head h2{font-size:28px}}
.text-link{font-size:14px;font-weight:600;color:var(--brand-600);white-space:nowrap}
.text-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.mini-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#DCE5F3}
.mini-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.mini-top .pill{background:var(--brand-50)}
.mini-top .time{font-size:13px;color:var(--muted)}
.mini-card h3{margin-top:14px;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card p{margin-top:10px;font-size:14px;color:var(--body-text);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-more{margin-top:auto;padding-top:16px;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.mini-card:hover .mini-more span{transform:translateX(4px)}
.mini-more span{display:inline-block;transition:transform var(--ease)}
.back-btn{margin-top:32px;width:100%}
@media (min-width:640px){.back-btn{width:auto}}

/* ---------------- Sidebar ---------------- */
.article-side{display:flex;flex-direction:column;gap:20px;min-width:0}
@media (min-width:1024px){.article-side{position:sticky;top:96px;align-self:start}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:var(--shadow-sm)}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border-radius:8px;font-size:14px;color:var(--ink-700);
  transition:background-color var(--ease),color var(--ease);
}
.side-nav a:hover{background:var(--brand-50);color:var(--brand-600)}
.side-nav a .arrow{color:#C3CDDD;font-size:13px;transition:transform var(--ease)}
.side-nav a:hover .arrow{transform:translateX(3px);color:var(--brand-600)}
.hot-list{display:flex;flex-direction:column;gap:14px}
.hot-item{display:flex;gap:12px;align-items:flex-start}
.hot-thumb{
  width:64px;height:64px;flex:0 0 64px;border-radius:10px;overflow:hidden;background:#EEF2F8;
}
.hot-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.hot-item:hover .hot-thumb img{transform:scale(1.06)}
.hot-item h4{
  font-size:14px;font-weight:500;line-height:1.6;color:var(--ink-700);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.hot-item:hover h4{color:var(--brand-600)}
.hot-item .hot-meta{font-size:12px;color:var(--muted);margin-top:6px}
.side-cta{background:var(--panel);border:1px solid #DCE6FA}
.side-cta h3{margin-bottom:8px}
.side-cta p{font-size:14px;color:var(--body-text);line-height:1.75;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------------- CTA ---------------- */
.cta-section{padding:0 0 72px}
@media (min-width:768px){.cta-section{padding:0 0 96px}}
.cta-card{
  background:var(--dark);border-radius:var(--radius-lg);padding:32px 24px;
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
  box-shadow:0 18px 48px rgba(14,26,43,.18);
}
@media (min-width:900px){.cta-card{grid-template-columns:1.1fr .9fr;padding:44px;gap:40px}}
.cta-card h2{font-size:24px;font-weight:700;color:#fff;letter-spacing:-.01em;line-height:1.35}
@media (min-width:768px){.cta-card h2{font-size:30px}}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.8;color:#A9BACD}
.cta-form{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){.cta-form{flex-direction:row;align-items:center}}
.cta-form input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:14px;outline:none;transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.cta-form input::placeholder{color:#8395AA}
.cta-form input:focus{background:rgba(255,255,255,.10);border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(76,123,240,.22)}
.cta-form .btn{background:#fff;color:var(--ink-900);white-space:nowrap}
.cta-form .btn:hover{background:#EAF0FB;color:var(--brand-700);transform:translateY(-1px)}
@media (max-width:639.98px){.cta-form .btn{width:100%}}

/* ---------------- Footer ---------------- */
.site-footer{background:var(--dark);color:#9FB0C6;padding:56px 0 24px}
@media (min-width:768px){.site-footer{padding:72px 0 28px}}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media (min-width:900px){.footer-grid{grid-template-columns:1.6fr repeat(4,1fr);gap:32px}}
.footer-brand{grid-column:1 / -1}
@media (min-width:900px){.footer-brand{grid-column:auto}}
.footer-brand .brand-mark{background:var(--brand-500)}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-sub{color:#8395AA}
.footer-brand .brand-divider{background:rgba(255,255,255,.16)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:#9FB0C6;max-width:320px}
.footer-contact{margin-top:14px;font-size:13px;line-height:1.9;color:#7E90A6}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#9FB0C6;transition:color 120ms ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-copy{font-size:13px;color:#7E90A6}
.socials{display:flex;align-items:center;gap:10px}
.social{
  width:34px;height:34px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);color:#B9C7D8;transition:all var(--ease);
}
.social svg{width:16px;height:16px}
.social:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px)}

/* roulang page: category1 */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-300:#4C7BF0;
  --brand-100:#E6EDFD;
  --teal:#12B3A0;
  --amber:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-700:#26364B;
  --body:#5A6B80;
  --muted:#8593A6;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --tint:#F1F5FD;
  --line:#E4EAF2;
  --line-strong:#D8E1EE;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05),0 6px 20px rgba(14,26,43,.06);
  --shadow-md:0 2px 4px rgba(14,26,43,.06),0 14px 32px rgba(14,26,43,.10);
  --ease:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 4px 18px rgba(14,26,43,.06)}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  height:56px;display:flex;align-items:center;gap:16px;
}
@media (min-width:768px){.nav-inner{padding:0 32px}}
@media (min-width:1024px){.nav-inner{height:64px;gap:24px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-300));
  color:#fff;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-divider{width:1px;height:16px;background:var(--line-strong)}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-links{display:none}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:14px;font-weight:500;color:var(--ink-700);
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-600);opacity:0;transition:opacity var(--ease);
}
.nav-link:hover{color:var(--brand-600);background:var(--tint)}
.nav-link:hover::after{opacity:.35}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{opacity:1}
.nav-right{display:none;align-items:center;gap:12px;margin-left:auto}
@media (min-width:1024px){.nav-right{display:flex}}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:224px;height:38px;padding:0 10px;
  background:#F2F5FA;border:1.5px solid transparent;border-radius:10px;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
  cursor:text;
}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:13px;color:var(--ink-700);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{
  background:#fff;border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(42,92,223,.12);
}
.kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line-strong);
  border-radius:999px;padding:1px 7px;line-height:1.5;flex-shrink:0;background:#fff;
}
.nav-toggle{
  margin-left:auto;width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:10px;background:#fff;color:var(--ink-700);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600)}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  padding:20px;display:flex;flex-direction:column;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity 200ms ease,transform 200ms ease;
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);
  background:#fff;color:var(--ink-700);display:flex;align-items:center;justify-content:center;
}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-links a{
  font-size:18px;font-weight:600;color:var(--ink-900);
  padding:12px 4px;border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--brand-600)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  background:#F2F5FA;border-radius:10px;margin-bottom:16px;
}
.drawer-search input{border:0;background:transparent;outline:none;font-size:14px;width:100%;color:var(--ink-700)}
.drawer-search svg{width:16px;height:16px;color:var(--muted)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.22)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 22px rgba(42,92,223,.26)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{background:#EDF2FF;transform:translateY(-1px)}
.btn-block{width:100%}

/* ---------- 通用元素 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:500;letter-spacing:.02em;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--teal)}
.badge-soft{background:#EEF2F8;color:var(--ink-700)}
.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-600);margin-bottom:12px;
}
.h1{font-size:30px;line-height:1.18;font-weight:700;color:var(--ink-900);letter-spacing:-.02em}
@media (min-width:1024px){.h1{font-size:44px;line-height:1.15}}
.h2{font-size:24px;line-height:1.28;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
@media (min-width:1024px){.h2{font-size:32px;line-height:1.25}}
.h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink-900)}
.lead{font-size:16px;line-height:1.8;color:var(--body)}
.section-head{margin-bottom:32px;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.section-head p{max-width:640px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.text-link svg{width:16px;height:16px;transition:transform var(--ease)}
.text-link:hover svg{transform:translateX(4px)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面包屑 ---------- */
.crumbs{padding-top:20px}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs a{color:var(--muted);transition:color var(--ease)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs .sep{color:#C6D1E0}
.crumbs [aria-current]{color:var(--ink-700);font-weight:600}

/* ---------- Hero ---------- */
.hero{padding:32px 0 8px}
@media (min-width:1024px){.hero{padding:56px 0 16px}}
.hero-grid{display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px}}
.hero h1{margin:16px 0 18px;max-width:12em}
@media (min-width:1024px){.hero h1{max-width:14em}}
.hero-lead{max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 18px}
.hero-notes{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.hero-notes span{white-space:nowrap}
.hero-notes .mid{color:#C6D1E0}

.phone-wrap{display:flex;justify-content:center;position:relative}
.phone-frame{
  position:relative;width:260px;aspect-ratio:9/16;
  border-radius:28px;border:8px solid #fff;background:#EEF2F8;
  box-shadow:0 20px 48px rgba(14,26,43,.18);
  overflow:hidden;
}
@media (min-width:640px){.phone-frame{width:300px}}
@media (min-width:1024px){.phone-frame{width:320px}}
.phone-frame img{width:100%;height:100%;object-fit:cover}
.phone-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(14,26,43,.82) 0%,rgba(14,26,43,.20) 42%,rgba(14,26,43,0) 70%);
}
.play-btn{
  position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  background:rgba(255,255,255,.92);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;border:0;cursor:pointer;
  z-index:2;transition:transform var(--ease),background var(--ease);
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);background:#fff}
.play-btn svg{width:20px;height:20px;margin-left:3px}
.phone-bar{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:2;
  display:flex;align-items:center;gap:10px;color:#fff;
}
.phone-avatar{
  width:24px;height:24px;border-radius:50%;object-fit:cover;
  border:1px solid rgba(255,255,255,.7);flex-shrink:0;background:#EEF2F8;
}
.phone-bar .name{font-size:12px;font-weight:600;line-height:1.3}
.phone-bar .views{font-size:11px;color:rgba(255,255,255,.75)}
.phone-chips{position:absolute;right:14px;bottom:52px;z-index:2;display:flex;flex-direction:column;gap:8px}
.phone-chip{
  width:28px;height:28px;border-radius:50%;
  background:rgba(14,26,43,.38);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.phone-chip svg{width:13px;height:13px}
.hero-mini{
  display:none;
}
@media (min-width:1024px){
  .hero-mini{
    display:block;position:absolute;width:120px;border-radius:14px;overflow:hidden;
    border:4px solid #fff;box-shadow:var(--shadow-md);background:#EEF2F8;
  }
  .hero-mini img{width:100%;height:160px;object-fit:cover}
  .hero-mini.left{left:-24px;top:44px;transform:rotate(-8deg)}
  .hero-mini.right{right:-20px;bottom:56px;transform:rotate(6deg)}
}

/* ---------- 数据条 ---------- */
.stats{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:repeat(2,1fr);
  padding:8px 0;margin-top:40px;
}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:16px 20px;text-align:left;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
@media (max-width:767px){
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
}
.stat-num{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.2}
@media (min-width:1024px){.stat-num{font-size:32px}}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;gap:16px}
@media (min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
.scene{
  display:flex;gap:16px;padding:22px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#CFDCF3}
.scene-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
}
.scene-icon svg{width:20px;height:20px}
.scene h3{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.scene p{font-size:14px;line-height:1.75;color:var(--body)}

/* ---------- 流程 ---------- */
.flow-section{background:var(--tint)}
.flow{display:grid;gap:24px;position:relative}
@media (min-width:1024px){.flow{grid-template-columns:repeat(4,1fr);gap:20px}}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm)}
.flow-step .step-no{
  width:36px;height:36px;border-radius:50%;
  background:var(--brand-600);color:#fff;font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;position:relative;z-index:2;
}
.flow-step h3{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.flow-step p{font-size:14px;line-height:1.75;color:var(--body)}
.flow-step .step-meta{display:inline-block;margin-top:14px;font-size:12px;color:var(--brand-700);background:var(--brand-100);padding:3px 9px;border-radius:999px}
@media (min-width:1024px){
  .flow-step:not(:last-child)::after{
    content:"";position:absolute;top:42px;right:-20px;width:20px;height:0;
    border-top:1px dashed #A9BFEE;z-index:1;
  }
}
@media (max-width:1023px){
  .flow-step:not(:last-child)::after{
    content:"";position:absolute;left:41px;bottom:-24px;height:24px;
    border-left:1px dashed #A9BFEE;
  }
}

/* ---------- 对比表 ---------- */
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.table-wrap{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
table.compare caption{text-align:left;padding:20px 24px 0;font-size:13px;color:var(--muted)}
table.compare th,table.compare td{
  padding:14px 20px;text-align:left;font-size:14px;line-height:1.7;
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.compare thead th{
  background:var(--tint);color:var(--ink-900);font-size:14px;font-weight:600;
  border-bottom:1px solid #D9E4F7;white-space:nowrap;
}
table.compare thead th.hl{color:var(--brand-700);background:#E9F0FF}
table.compare tbody th{font-weight:600;color:var(--ink-700);white-space:nowrap;background:#FCFDFF}
table.compare tbody tr:nth-child(even) td{background:#FAFCFF}
table.compare tbody tr:hover td{background:#F5F9FF}
table.compare td.hl{color:var(--ink-900);font-weight:600}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0}
.table-note{padding:16px 24px;font-size:13px;color:var(--muted);background:#FBFCFE;border-top:1px solid var(--line)}

/* ---------- 交付清单 ---------- */
.deliver-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)}
.deliver-row{
  display:flex;align-items:flex-start;gap:16px;padding:20px 24px;
  border-bottom:1px solid var(--line);transition:background var(--ease);
}
.deliver-row:last-child{border-bottom:0}
.deliver-row:hover{background:#FAFCFF}
.deliver-no{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:var(--tint);color:var(--brand-700);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.deliver-row h3{font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:4px}
.deliver-row p{font-size:14px;color:var(--body);line-height:1.7}
.deliver-arrow{margin-left:auto;color:#C6D1E0;flex-shrink:0;transition:transform var(--ease),color var(--ease)}
.deliver-row:hover .deliver-arrow{transform:translateX(4px);color:var(--brand-600)}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:#CFDCF3;box-shadow:var(--shadow-md)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:2px solid var(--brand-600);outline-offset:-2px}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;position:relative;
  transition:transform 200ms ease,color 200ms ease;color:var(--brand-600);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:5px;right:5px;top:11px;height:2px}
.faq-icon::after{top:5px;bottom:5px;left:11px;width:2px;transition:opacity 200ms ease}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--body)}

/* ---------- 转化条 ---------- */
.cta-wrap{padding:0 0 56px}
@media (min-width:1024px){.cta-wrap{padding:0 0 96px}}
.cta-box{
  background:var(--ink-900);border-radius:var(--radius-lg);
  padding:32px 24px;
  display:grid;gap:28px;
  background-image:radial-gradient(circle at 88% 12%,rgba(76,123,240,.28),transparent 58%);
}
@media (min-width:1024px){
  .cta-box{grid-template-columns:1fr 1fr;align-items:center;padding:48px;gap:48px}
}
.cta-box h2{color:#fff;font-size:24px;line-height:1.3;font-weight:700;margin-bottom:12px}
@media (min-width:1024px){.cta-box h2{font-size:30px}}
.cta-box p{color:#A9BCD4;font-size:15px;line-height:1.8}
.cta-badge{background:rgba(255,255,255,.12);color:#fff;margin-bottom:14px}
.cta-form{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){
  .cta-form{flex-direction:row;align-items:center}
  .cta-form .btn{flex-shrink:0}
}
.cta-form input{
  height:44px;flex:1;width:100%;border-radius:10px;padding:0 16px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:15px;outline:none;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cta-form input::placeholder{color:#8FA3BC}
.cta-form input:focus{
  border-color:var(--brand-300);background:rgba(255,255,255,.14);
  box-shadow:0 0 0 3px rgba(76,123,240,.24);
}
.cta-hint{font-size:12px;color:#8296AF;margin-top:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#9FB0C6;padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr 1fr}}
.footer-brand{grid-column:1 / -1}
@media (min-width:1024px){.footer-brand{grid-column:auto}}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-sub{color:#7C8FA9}
.footer-brand .brand-divider{background:rgba(255,255,255,.18)}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB0C6;margin:16px 0 12px;max-width:320px}
.footer-contact{font-size:13px;line-height:1.8;color:#7C8FA9}
.footer-contact strong{color:#D6E1EF;font-weight:600}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#9FB0C6;transition:color 120ms ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.footer-copy{font-size:13px;color:#7C8FA9}
.socials{display:flex;gap:10px}
.social{
  width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;color:#9FB0C6;
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.social svg{width:16px;height:16px}
.social:hover{color:#fff;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.08)}
.social:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px}

/* roulang page: category2 */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-400:#4C7BF0;
  --brand-100:#E6EDFD;
  --teal:#12B3A0;
  --amber:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-700:#26364B;
  --body:#5A6B80;
  --muted:#8593A6;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --soft:#F1F5FD;
  --line:#E4EAF2;
  --line-strong:#D8E1EE;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(14,26,43,.05),0 6px 20px rgba(14,26,43,.06);
  --shadow-2:0 2px 4px rgba(14,26,43,.06),0 14px 32px rgba(14,26,43,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,button,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,26,43,.07)}
.nav-inner{
  max-width:1200px;margin:0 auto;
  height:56px;padding:0 20px;
  display:flex;align-items:center;gap:12px;
}
@media (min-width:768px){.nav-inner{padding:0 32px}}
@media (min-width:1024px){.nav-inner{height:64px;gap:24px}}
.brand{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-400));
  color:#fff;font-weight:700;font-size:15px;line-height:1;
  display:grid;place-items:center;flex:0 0 auto;
  box-shadow:0 4px 10px rgba(42,92,223,.28);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.brand-divider{width:1px;height:15px;background:var(--line-strong);display:inline-block}
.brand-sub{font-size:12px;color:var(--muted);white-space:nowrap}
.nav-links{display:none;align-items:center;gap:26px;margin-left:10px;flex:1}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-700);
  padding:6px 0;transition:color .16s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand-600);opacity:0;transition:opacity .16s ease;
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{opacity:.45}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{opacity:1}
.nav-right{display:none;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:224px;height:38px;padding:0 10px;
  background:#F2F5FA;border:1px solid transparent;border-radius:10px;
  transition:background .16s,border-color .16s,box-shadow .16s;
}
.nav-search svg{width:15px;height:15px;color:var(--muted);flex:0 0 auto}
.nav-search input{
  flex:1;min-width:0;border:none;background:transparent;outline:none;
  font-size:13px;color:var(--ink-700);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search .kbd{
  font-size:11px;line-height:1;padding:3px 5px;border-radius:6px;
  border:1px solid var(--line-strong);background:#fff;color:var(--muted);white-space:nowrap;
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(42,92,223,.12)}
.nav-toggle{
  margin-left:auto;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line-strong);background:#fff;color:var(--ink-700);
  display:grid;place-items:center;cursor:pointer;transition:border-color .16s,color .16s;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600)}
@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-right{display:flex}
  .nav-toggle{display:none}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .16s,color .16s,border-color .16s,transform .16s,box-shadow .16s;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.22)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 22px rgba(42,92,223,.28)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;color:var(--ink-700);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:15px}
.btn-white{background:#fff;color:var(--ink-900);border-color:#fff}
.btn-white:hover{background:#E6EDFD;color:var(--brand-700);transform:translateY(-1px)}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  display:flex;flex-direction:column;gap:20px;padding:20px;
  transform:translateX(102%);transition:transform .26s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-strong);
  background:#fff;color:var(--ink-700);display:grid;place-items:center;cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand-600);color:var(--brand-600)}
.drawer-links{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:12px}
.drawer-link{
  font-size:18px;font-weight:500;color:var(--ink-700);padding:12px 4px;
  border-bottom:1px solid var(--line);transition:color .16s;
}
.drawer-link:last-child{border-bottom:none}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand-600)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  background:#F2F5FA;border-radius:10px;border:1px solid transparent;
}
.drawer-search input{flex:1;border:none;background:transparent;outline:none;font-size:14px;color:var(--ink-700)}
.drawer-search svg{width:16px;height:16px;color:var(--muted)}
.drawer-cta{width:100%;height:46px}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);padding:18px 0 4px;
}
.crumb a{transition:color .16s}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C3CDDC}
.crumb .current{color:var(--ink-700);font-weight:500}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:34px 0 8px;text-align:center}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.10;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,248,252,.2),rgba(246,248,252,.96) 78%,var(--bg));
}
.page-hero > *{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;background:var(--brand-100);
  color:var(--brand-700);font-size:12px;font-weight:500;letter-spacing:.02em;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(18,179,160,.16)}
.page-hero h1{
  font-size:30px;line-height:1.22;font-weight:700;color:var(--ink-900);
  letter-spacing:-.02em;margin:18px auto 14px;max-width:860px;
}
.page-hero .lead{
  max-width:730px;margin:0 auto;font-size:15px;line-height:1.85;color:var(--body);
}
@media (min-width:1024px){
  .page-hero{padding:56px 0 8px}
  .page-hero h1{font-size:44px;line-height:1.15;margin-top:22px}
  .page-hero .lead{font-size:16px}
}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:16px;
  overflow:hidden;margin:36px auto 0;max-width:1000px;box-shadow:var(--shadow-1);
}
@media (min-width:900px){.stat-row{grid-template-columns:repeat(4,1fr)}}
.stat{background:#fff;padding:20px 12px;text-align:center}
.stat b{
  display:block;font-size:28px;font-weight:700;color:var(--brand-600);
  line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
@media (min-width:900px){.stat b{font-size:32px}}
.stat span{display:block;margin-top:4px;font-size:13px;color:var(--muted)}

/* ---------- 板块 ---------- */
.section{padding:52px 0}
@media (min-width:1024px){.section{padding:76px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:26px}
.section-head h2{font-size:24px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;line-height:1.3}
@media (min-width:1024px){.section-head h2{font-size:32px;line-height:1.25}}
.section-head .sub{margin-top:8px;font-size:15px;color:var(--body);line-height:1.8;max-width:660px}
.section-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;transition:gap .16s}
.section-link:hover{gap:10px}
.band-soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 筛选芯片 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.chip{
  height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line-strong);background:#fff;color:var(--ink-700);
  font-size:14px;font-weight:500;cursor:pointer;
  display:inline-flex;align-items:center;
  transition:background .16s,color .16s,border-color .16s,box-shadow .16s;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600)}
.chip.is-active{
  background:var(--brand-600);border-color:var(--brand-600);color:#fff;
  box-shadow:0 8px 18px rgba(42,92,223,.24);
}

/* ---------- 片段网格 ---------- */
.clip-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.clip-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (min-width:1024px){.clip-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.clip-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.clip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.clip-card.is-hidden{display:none}
.clip-media{
  position:relative;aspect-ratio:9/16;border-radius:12px;overflow:hidden;
  background:#EEF2F8;
}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.clip-card:hover .clip-media img{transform:scale(1.04)}
.clip-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(14,26,43,.62),rgba(14,26,43,.06) 46%,rgba(14,26,43,0) 72%);
  pointer-events:none;
}
.clip-dur,.clip-tag{
  position:absolute;z-index:2;font-size:11px;line-height:1;padding:4px 8px;border-radius:999px;
}
.clip-dur{left:10px;top:10px;background:rgba(14,26,43,.62);color:#fff;font-variant-numeric:tabular-nums}
.clip-tag{right:10px;top:10px;background:rgba(255,255,255,.94);color:var(--brand-600);font-weight:500}
.clip-play{
  position:absolute;left:50%;top:50%;z-index:2;
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.92);display:grid;place-items:center;
  transform:translate(-50%,-50%);
  box-shadow:0 10px 24px rgba(14,26,43,.26);
  transition:transform .18s ease;
}
.clip-card:hover .clip-play{transform:translate(-50%,-50%) scale(1.08)}
.clip-play svg{width:15px;height:15px;fill:var(--ink-900);margin-left:2px}
.clip-media-foot{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:2;
  color:#fff;font-size:12px;line-height:1.5;
  display:flex;align-items:center;gap:8px;
}
.clip-media-foot .avatar{
  width:24px;height:24px;border-radius:50%;flex:0 0 auto;
  background:rgba(255,255,255,.24);border:1px solid rgba(255,255,255,.5);
  display:grid;place-items:center;font-size:11px;font-weight:600;
}
.clip-body{padding:14px 4px 4px;display:flex;flex-direction:column;flex:1}
.clip-title{
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:48px;
}
.clip-desc{font-size:13px;color:var(--body);line-height:1.7;margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clip-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:12px;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.clip-foot .book{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--muted);background:#fff;
  transition:color .16s,border-color .16s;cursor:pointer;
}
.clip-foot .book:hover{color:var(--brand-600);border-color:var(--brand-600)}
.clip-foot .book svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8}
.load-more{display:flex;justify-content:center;margin-top:32px}

/* ---------- 行式说明 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.split{grid-template-columns:5fr 7fr;gap:56px;align-items:start}}
.split h2{font-size:24px;font-weight:700;color:var(--ink-900);line-height:1.3}
@media (min-width:1024px){.split h2{font-size:32px;line-height:1.25}}
.split .split-sub{margin-top:12px;font-size:15px;color:var(--body);line-height:1.85}
.split .split-cta{margin-top:22px}
.step-list{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-1)}
.step-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 22px;border-bottom:1px solid var(--line);
  transition:background .16s ease;
}
.step-item:last-child{border-bottom:none}
.step-item:hover{background:#FAFCFF}
.step-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);
  font-size:13px;font-weight:700;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5}
.step-item p{font-size:14px;color:var(--body);line-height:1.75;margin-top:4px}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item:hover{box-shadow:var(--shadow-1)}
.faq-item.is-open{border-color:#CBD9F7;box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:none;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:20px;height:20px;color:var(--muted);
  transition:transform .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand-600)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 20px 20px;font-size:15px;color:var(--body);line-height:1.85}

/* ---------- 转化条 ---------- */
.cta-wrap{padding:56px 0 8px}
.cta-card{
  background:#0E1A2B;border-radius:24px;padding:30px;
  display:grid;grid-template-columns:1fr;gap:24px;
  box-shadow:0 18px 44px rgba(14,26,43,.20);
}
@media (min-width:1024px){
  .cta-card{grid-template-columns:1fr 1fr;align-items:center;padding:48px;gap:44px}
}
.cta-card h2{font-size:24px;font-weight:700;color:#fff;line-height:1.3;letter-spacing:-.01em}
@media (min-width:1024px){.cta-card h2{font-size:32px}}
.cta-card p{margin-top:10px;font-size:15px;color:#9FB0C6;line-height:1.8}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1;min-width:200px;height:48px;padding:0 16px;
  border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);color:#fff;font-size:15px;outline:none;
  transition:border-color .16s,box-shadow .16s,background .16s;
}
.cta-form input::placeholder{color:#8593A6}
.cta-form input:focus{background:rgba(255,255,255,.12);border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(76,123,240,.24)}
.cta-form .btn-white{height:48px;border-radius:var(--r-btn)}
.cta-note{margin-top:12px;font-size:12px;color:#7D8FA8}
@media (max-width:639px){
  .cta-form{flex-direction:column}
  .cta-form .btn-white{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1A2B;color:#9FB0C6;margin-top:80px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr repeat(4,1fr);gap:32px}}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-sub{color:#8593A6}
.footer-brand .brand-divider{background:rgba(255,255,255,.16)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#9FB0C6;max-width:320px}
.footer-contact{margin-top:14px;font-size:13px;line-height:1.9;color:#7D8FA8}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.01em}
.footer-col li a{
  display:inline-block;font-size:14px;color:#9FB0C6;line-height:2.15;
  transition:color .12s ease;
}
.footer-col li a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7D8FA8;
}
.footer-copy{font-size:13px;color:#7D8FA8;line-height:1.8}
.socials{display:flex;align-items:center;gap:10px}
.social{
  width:32px;height:32px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);color:#9FB0C6;
  display:grid;place-items:center;transition:color .16s,background .16s,border-color .16s;
}
.social svg{width:16px;height:16px}
.social:hover{color:#fff;background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.3)}

/* 滚动条隐藏 */
.no-scrollbar{scrollbar-width:none;-ms-overflow-style:none}
.no-scrollbar::-webkit-scrollbar{display:none}

/* roulang page: category3 */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-400:#4C7BF0;
  --brand-100:#E6EDFD;
  --accent:#12B3A0;
  --star:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-800:#26364B;
  --ink-500:#5A6B80;
  --ink-400:#8593A6;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --soft:#F1F5FD;
  --line:#E4EAF2;
  --line-strong:#D8E1EE;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05),0 6px 20px rgba(14,26,43,.06);
  --shadow-md:0 2px 4px rgba(14,26,43,.06),0 14px 32px rgba(14,26,43,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-800);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:var(--brand-100);color:var(--brand-700);}

/* ===== 容器与板块 ===== */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .container{padding:0 32px;} }
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:88px 0;} }
.section-soft{background:var(--soft);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:24px;
  line-height:1.25;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
@media (min-width:1024px){ .section-head h2{font-size:32px;} }
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--ink-500);
  max-width:640px;
  line-height:1.8;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-600);
  transition:gap .16s ease,color .16s ease;
}
.text-link:hover{gap:10px;color:var(--brand-700);}
.text-link:focus-visible{outline:2px solid var(--brand-600);outline-offset:3px;border-radius:4px;}

/* ===== 徽章 / 按钮 / 标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:999px;
  background:var(--soft);
  color:var(--brand-600);
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.btn-primary{
  background:var(--brand-600);
  color:#fff;
  box-shadow:0 1px 2px rgba(14,26,43,.08);
}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 6px 16px rgba(42,92,223,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:#fff;
  color:var(--ink-800);
  border-color:var(--line-strong);
}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);}
.btn-light{
  background:#fff;
  color:var(--ink-900);
}
.btn-light:hover{background:#EDF2FE;transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px;border-radius:9px;}
.btn-lg{height:50px;padding:0 28px;font-size:15px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(14,26,43,.07);}
.nav-inner{
  max-width:1200px;
  margin:0 auto;
  height:64px;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:20px;
}
@media (min-width:768px){ .nav-inner{padding:0 32px;} }
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  flex:none;
}
.brand-mark{
  width:28px;height:28px;
  border-radius:8px;
  background:linear-gradient(150deg,var(--brand-400),var(--brand-600));
  color:#fff;
  font-size:15px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  line-height:1;
  flex:none;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.brand-divider{
  width:1px;height:16px;background:var(--line-strong);
}
.brand-sub{
  font-size:12px;
  color:var(--ink-400);
  letter-spacing:.02em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  height:64px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:64px;
  padding:0 14px;
  font-size:14px;
  font-weight:500;
  color:var(--ink-800);
  transition:color .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:11px;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
  opacity:0;
  transition:opacity .2s ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{opacity:.32;}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{opacity:1;}
.nav-link:focus-visible{outline:2px solid var(--brand-600);outline-offset:-6px;border-radius:6px;}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:224px;
  height:38px;
  padding:0 10px;
  border-radius:var(--r-sm);
  background:#F2F5FA;
  border:1px solid transparent;
  transition:background-color .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--ink-400);flex:none;}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:13px;
  color:var(--ink-800);
  font-family:inherit;
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search .kbd{
  flex:none;
  font-size:11px;
  line-height:1;
  padding:3px 6px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--ink-400);
  background:#fff;
}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(42,92,223,.12);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  margin-left:auto;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-800);
  cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}

/* ===== 移动抽屉 ===== */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:#fff;
  display:flex;
  flex-direction:column;
  padding:16px 20px 28px;
  transform:translateX(100%);
  visibility:hidden;
  transition:transform .26s ease,visibility .26s ease;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-800);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;margin:16px 0 20px;}
.drawer-links a{
  font-size:18px;
  font-weight:600;
  color:var(--ink-900);
  padding:14px 4px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.drawer-links a.is-active{color:var(--brand-600);}
.drawer-links a span{font-size:12px;color:var(--ink-400);font-weight:500;}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-sm);
  background:#F2F5FA;
  border:1px solid var(--line-strong);
  margin-bottom:14px;
}
.drawer-search svg{width:16px;height:16px;color:var(--ink-400);flex:none;}
.drawer-search input{border:0;background:transparent;outline:none;flex:1;font-size:14px;font-family:inherit;color:var(--ink-800);}
.drawer-cta{width:100%;margin-top:auto;}

/* ===== 面包屑 ===== */
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li+li::before{content:"/";color:var(--line-strong);}
.breadcrumb a{color:var(--ink-400);transition:color .16s ease;}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb [aria-current]{color:var(--ink-800);font-weight:500;}

/* ===== 口碑首屏 ===== */
.review-hero{padding-top:36px;}
.review-hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:center;
}
@media (min-width:1024px){
  .review-hero-grid{grid-template-columns:1.08fr .92fr;gap:56px;}
  .review-hero{padding-top:52px;}
}
.review-hero h1{
  margin-top:16px;
  font-size:30px;
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
@media (min-width:1024px){ .review-hero h1{font-size:42px;line-height:1.15;} }
.review-hero .lead{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
  max-width:560px;
}
.score-block{
  margin-top:28px;
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:22px 26px;
  box-shadow:var(--shadow-sm);
}
.score-num{
  font-size:56px;
  font-weight:700;
  line-height:1;
  color:var(--brand-600);
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
}
.score-num span{font-size:20px;font-weight:600;color:var(--ink-400);margin-left:2px;}
.score-side{min-width:180px;}
.stars{
  color:var(--star);
  font-size:15px;
  letter-spacing:2px;
  line-height:1;
}
.score-note{
  margin-top:8px;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-400);
}
.stat-row{
  margin-top:20px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:18px 6px;
  box-shadow:var(--shadow-sm);
}
.stat-item{text-align:center;padding:0 8px;}
.stat-item+.stat-item{border-left:1px solid var(--line);}
.stat-num{
  display:block;
  font-size:26px;
  font-weight:700;
  line-height:1.2;
  color:var(--ink-900);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--ink-400);margin-left:2px;font-weight:600;}
.stat-label{display:block;margin-top:6px;font-size:12.5px;color:var(--ink-400);line-height:1.5;}
@media (max-width:560px){
  .stat-row{grid-template-columns:1fr;padding:6px 16px;}
  .stat-item{padding:14px 0;text-align:left;display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
  .stat-item+.stat-item{border-left:0;border-top:1px solid var(--line);}
  .stat-num{font-size:22px;}
  .stat-label{margin-top:0;text-align:right;}
}
.review-hero-media{position:relative;}
.review-hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  background:#EEF2F8;
  box-shadow:var(--shadow-md);
}
.media-float{
  position:absolute;
  left:20px;
  bottom:-22px;
  display:flex;
  align-items:center;
  gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 16px;
  box-shadow:var(--shadow-md);
  max-width:290px;
}
.media-float .pulse{
  width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;
  box-shadow:0 0 0 4px rgba(18,179,160,.16);
}
.media-float strong{display:block;font-size:13px;color:var(--ink-900);font-weight:600;line-height:1.5;}
.media-float span{display:block;font-size:12px;color:var(--ink-400);line-height:1.5;}

/* ===== 评分维度 ===== */
.meter-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:640px){ .meter-grid{grid-template-columns:repeat(2,1fr);gap:24px 36px;} }
.meter{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px 22px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .16s ease,transform .16s ease;
}
.meter:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.meter-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  margin-bottom:12px;
}
.meter-head span{font-size:15px;font-weight:600;color:var(--ink-900);}
.meter-head strong{
  font-size:20px;
  font-weight:700;
  color:var(--brand-600);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.bar{
  height:8px;
  border-radius:999px;
  background:#E9EFFA;
  overflow:hidden;
}
.bar i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand-400),var(--brand-600));
}
.meter p{
  margin-top:10px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-400);
}

/* ===== 评价墙 ===== */
.review-wall{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:900px){ .review-wall{grid-template-columns:repeat(2,1fr);gap:24px;} }
.review-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.review-card-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:42px;height:42px;
  flex:none;
  border-radius:50%;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:15px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.review-person{min-width:0;}
.review-name{font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.4;}
.review-role{font-size:12.5px;color:var(--ink-400);line-height:1.5;margin-top:2px;}
.review-stars{
  margin-left:auto;
  flex:none;
  font-size:13px;
  letter-spacing:1px;
  color:var(--star);
  white-space:nowrap;
}
.review-stars.less{color:#C9D6EC;}
.review-text{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-500);
}
.review-text strong{color:var(--ink-800);font-weight:600;}
.review-card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:var(--ink-400);
}
.review-card-foot time{font-variant-numeric:tabular-nums;flex:none;}

/* ===== 合作企业墙 ===== */
.logo-wall{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
@media (min-width:640px){ .logo-wall{grid-template-columns:repeat(4,1fr);gap:18px;} }
.logo-tile{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:96px;
  padding:18px 12px;
  border-radius:14px;
  background:#EEF2F8;
  border:1px solid transparent;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.logo-tile strong{
  font-size:15px;
  font-weight:700;
  color:#8593A6;
  letter-spacing:.02em;
  transition:color .18s ease;
}
.logo-tile span{
  font-size:11.5px;
  color:#A6B3C4;
  transition:color .18s ease;
}
.logo-tile:hover{
  background:#fff;
  border-color:var(--line-strong);
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.logo-tile:hover strong{color:var(--brand-600);}
.logo-tile:hover span{color:var(--ink-400);}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item.is-open{border-color:#C9D6EC;box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
  cursor:pointer;
}
.faq-q:focus-visible{outline:2px solid var(--brand-600);outline-offset:-4px;}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  line-height:1;
  font-weight:400;
  color:var(--ink-400);
  transition:transform .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand-600);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-500);
}

/* ===== 转化区 ===== */
.cta-wrap{padding-bottom:64px;}
@media (min-width:1024px){ .cta-wrap{padding-bottom:96px;} }
.cta-card{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:36px 24px;
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
@media (min-width:900px){
  .cta-card{grid-template-columns:1.05fr .95fr;gap:48px;padding:48px;}
}
.cta-card::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-140px;top:-180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(76,123,240,.34),rgba(76,123,240,0) 68%);
  pointer-events:none;
}
.cta-card h2{
  position:relative;
  font-size:24px;
  line-height:1.3;
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
}
@media (min-width:1024px){ .cta-card h2{font-size:30px;} }
.cta-card p{
  position:relative;
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:#9FB0C6;
  max-width:440px;
}
.cta-form{position:relative;display:flex;gap:12px;}
.cta-input{
  flex:1;
  min-width:0;
  height:50px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
  font-family:inherit;
  outline:none;
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.cta-input::placeholder{color:#8296AE;}
.cta-input:focus{border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(76,123,240,.28);background:rgba(255,255,255,.1);}
.cta-note{position:relative;margin-top:12px;font-size:12.5px;color:#7A8CA4;}
@media (max-width:720px){
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--ink-900);
  color:#9FB0C6;
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr repeat(4,1fr);gap:32px;} }
.footer-brand{grid-column:1/-1;}
@media (min-width:1024px){ .footer-brand{grid-column:auto;} }
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-divider{background:rgba(255,255,255,.18);}
.footer-brand .brand-sub{color:#7A8CA4;}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:#9FB0C6;
  max-width:300px;
}
.footer-contact{
  margin-top:14px;
  font-size:13px;
  line-height:1.9;
  color:#7A8CA4;
}
.footer-contact strong{color:#C6D2E2;font-weight:600;}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:.01em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:#9FB0C6;
  transition:color .12s ease;
}
.footer-col a:hover{color:#fff;}
.footer-col a:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:4px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.footer-copy{font-size:13px;color:#7A8CA4;line-height:1.7;}
.socials{display:flex;align-items:center;gap:10px;}
.social{
  width:36px;height:36px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  color:#9FB0C6;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background-color .16s ease,color .16s ease,transform .16s ease;
}
.social svg{width:18px;height:18px;}
.social:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);}
.social:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}

/* ===== 响应式导航 ===== */
@media (max-width:1023px){
  .nav-inner{height:56px;}
  .nav-links{display:none;}
  .nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:380px){
  .brand-sub{display:none;}
  .brand-divider{display:none;}
}

/* roulang page: category4 */
:root{
  --brand-600:#2A5CDF;
  --brand-700:#1B3F9E;
  --brand-300:#4C7BF0;
  --brand-100:#E6EDFD;
  --teal:#12B3A0;
  --amber:#F0A73A;
  --ink-900:#0E1A2B;
  --ink-700:#26364B;
  --body:#5A6B80;
  --muted:#8593A6;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --tint:#F1F5FD;
  --line:#E4EAF2;
  --dark:#0E1A2B;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05),0 6px 20px rgba(14,26,43,.06);
  --shadow-md:0 2px 4px rgba(14,26,43,.06),0 14px 32px rgba(14,26,43,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
.site-body img{max-width:100%;display:block;}
.site-body a{color:inherit;}
.site-body button{font-family:inherit;}
.tnum{font-variant-numeric:tabular-nums;}
.skip-link{
  position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand-600);
  padding:10px 16px;border-radius:0 0 10px 0;z-index:200;font-size:14px;
}
.skip-link:focus{left:0;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;
  cursor:pointer;transition:background-color .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.22);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);}
.btn-primary:active{transform:none;}
.btn-ghost{background:#fff;color:var(--ink-900);border-color:#D8E1EE;}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:#EDF2FF;color:var(--brand-700);}
.btn-block{width:100%;}
.btn:focus-visible,.nav-link:focus-visible,.article-row a:focus-visible,.chip:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(14,26,43,.07);}
.nav-inner{
  max-width:1200px;margin:0 auto;height:64px;display:flex;align-items:center;gap:20px;padding:0 32px;
}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;flex:none;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:700;line-height:1;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.brand-divider{width:1px;height:14px;background:var(--line);}
.brand-sub{font-size:12px;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:14px;font-weight:500;
  color:var(--ink-700);text-decoration:none;border-radius:8px;transition:color .16s ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link.is-active{color:var(--brand-600);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;width:224px;height:38px;padding:0 10px;
  background:#F2F5FA;border:1px solid transparent;border-radius:10px;transition:.16s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex:none;}
.nav-search input{border:0;background:transparent;outline:0;font-size:13px;color:var(--ink-700);width:100%;min-width:0;}
.nav-search input::placeholder{color:var(--muted);}
.nav-search:focus-within{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(42,92,223,.12);}
.kbd{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:1px 5px;line-height:1.5;flex:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-700);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;
  padding:18px 20px 28px;overflow-y:auto;
}
.nav-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-size:22px;line-height:1;color:var(--ink-700);cursor:pointer;display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--brand-600);color:var(--brand-600);}
.drawer-nav{display:flex;flex-direction:column;margin:18px 0 22px;}
.drawer-nav a{
  padding:15px 4px;font-size:18px;font-weight:500;color:var(--ink-700);
  text-decoration:none;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-600);font-weight:600;}
.drawer-search{
  display:flex;align-items:center;gap:10px;background:#F2F5FA;border-radius:10px;
  padding:0 12px;height:46px;margin-bottom:16px;
}
.drawer-search input{border:0;background:transparent;outline:0;font-size:14px;width:100%;color:var(--ink-700);}
.drawer-search svg{width:16px;height:16px;color:var(--muted);}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav{padding:22px 0 0;}
.breadcrumb{
  list-style:none;display:flex;flex-wrap:wrap;align-items:center;margin:0;padding:0;
  font-size:13px;color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;}
.breadcrumb li+li::before{content:"/";color:#C3CEDD;margin:0 8px;}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .16s ease;}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb li[aria-current]{color:var(--ink-700);font-weight:500;max-width:70vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:84px 0;}}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:500;letter-spacing:.02em;
}
.badge-dot{width:6px;height:6px;border-radius:999px;background:var(--teal);flex:none;}
.h1{
  margin:18px 0 0;font-size:30px;line-height:1.2;font-weight:700;letter-spacing:-.02em;color:var(--ink-900);
}
@media (min-width:1024px){.h1{font-size:44px;line-height:1.15;}}
.h2{margin:0;font-size:24px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);}
@media (min-width:1024px){.h2{font-size:32px;}}
.lead{margin:16px 0 0;font-size:16px;line-height:1.8;color:var(--body);max-width:44em;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-desc{margin:10px 0 0;font-size:15px;line-height:1.8;color:var(--body);max-width:52em;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-600);text-decoration:none;
}
.text-link:hover{color:var(--brand-700);}
.text-link span.arrow{transition:transform .16s ease;}
.text-link:hover span.arrow{transform:translateX(4px);}

/* ---------- Hero ---------- */
.cat-hero{padding:34px 0 8px;}
@media (min-width:1024px){.cat-hero{padding:52px 0 12px;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-note{
  margin-top:22px;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.hero-note .sep{color:#C9D4E2;}

.hero-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.hero-card-media{position:relative;aspect-ratio:16/10;background:#EEF2F8;overflow:hidden;}
.hero-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.hero-card:hover .hero-card-media img{transform:scale(1.04);}
.hero-card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,26,43,0) 40%,rgba(14,26,43,.55) 100%);
}
.hero-card-tag{
  position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.92);color:var(--brand-700);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
}
.hero-card-media-title{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff;
  font-size:15px;font-weight:600;line-height:1.5;
}
.hero-card-body{padding:20px 22px 24px;}
.hero-card-body h2{font-size:14px;font-weight:600;color:var(--ink-900);margin:0 0 12px;letter-spacing:.02em;}
.hero-card-body ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;}
.hero-card-body li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--body);}
.hero-card-body .num{
  flex:none;width:22px;height:22px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);
  font-size:11px;font-weight:700;display:grid;place-items:center;margin-top:2px;
}

/* ---------- 数据条 ---------- */
.stats-bar{
  margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(2,1fr);
}
@media (min-width:900px){.stats-bar{grid-template-columns:repeat(4,1fr);margin-top:48px;}}
.stat{padding:20px 18px;text-align:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat:nth-child(2n){border-right:0;}
.stat:nth-last-child(-n+2){border-bottom:0;}
@media (min-width:900px){
  .stat{border-bottom:0;padding:26px 18px;}
  .stat:nth-child(2n){border-right:1px solid var(--line);}
  .stat:last-child{border-right:0;}
}
.stat-num{font-size:30px;font-weight:700;color:var(--brand-600);line-height:1.2;letter-spacing:-.02em;}
@media (min-width:1024px){.stat-num{font-size:32px;}}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- 筛选芯片 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.chip{
  height:36px;padding:0 16px;border-radius:999px;border:1px solid #D8E1EE;background:#fff;
  color:var(--ink-700);font-size:13px;font-weight:500;cursor:pointer;
  transition:background-color .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600);}
.chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(42,92,223,.2);}

/* ---------- 行式文章列表 ---------- */
.list-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:8px 20px 4px;}
@media (min-width:768px){.list-panel{padding:8px 28px 6px;}}
.article-row{
  display:grid;grid-template-columns:88px minmax(0,1fr) 28px;gap:16px;align-items:center;
  padding:20px 4px;border-bottom:1px solid var(--line);transition:background-color .16s ease;
}
.article-row:last-child{border-bottom:0;}
.article-row:hover{background:#FAFCFF;}
.row-thumb{
  width:88px;height:66px;border-radius:10px;overflow:hidden;background:#EEF2F8;display:block;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.article-row:hover .row-thumb img{transform:scale(1.06);}
.row-title{margin:0;font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);}
.row-title a{text-decoration:none;color:inherit;transition:color .16s ease;}
.article-row:hover .row-title a{color:var(--brand-600);}
.row-desc{
  margin:6px 0 0;font-size:14px;line-height:1.7;color:var(--body);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{
  margin-top:10px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
}
.row-meta .tag{
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:500;
  padding:2px 9px;border-radius:999px;line-height:1.6;
}
.row-meta .dot{width:3px;height:3px;border-radius:999px;background:#C9D4E2;}
.row-arrow{
  display:grid;place-items:center;width:28px;height:28px;border-radius:999px;
  color:var(--muted);text-decoration:none;font-size:16px;transition:.16s ease;
}
.article-row:hover .row-arrow{color:var(--brand-600);transform:translateX(3px);}
@media (max-width:639px){
  .article-row{grid-template-columns:72px minmax(0,1fr);gap:14px;align-items:start;}
  .row-thumb{width:72px;height:72px;}
  .row-arrow{display:none;}
  .row-title{font-size:15.5px;}
  .row-desc{-webkit-line-clamp:3;}
}
.list-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 4px 20px;border-top:1px solid var(--line);margin-top:4px;
}
.list-foot p{margin:0;font-size:13px;color:var(--muted);}

/* ---------- 观察要点 ---------- */
.insight-wrap{
  background:var(--tint);border-radius:var(--radius-lg);padding:32px 22px;
}
@media (min-width:1024px){.insight-wrap{padding:52px 48px;}}
.insight-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.insight-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start;}}
.insight-list{list-style:none;margin:0;padding:0;background:#fff;border-radius:var(--radius-card);border:1px solid var(--line);overflow:hidden;}
.insight-item{
  display:grid;grid-template-columns:44px minmax(0,1fr) 18px;gap:14px;align-items:start;
  padding:20px 20px;border-bottom:1px solid var(--line);transition:background-color .16s ease;
}
.insight-item:last-child{border-bottom:0;}
.insight-item:hover{background:#FAFCFF;}
.insight-num{
  width:36px;height:36px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.insight-item h3{margin:0;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;}
.insight-item p{margin:6px 0 0;font-size:14px;line-height:1.7;color:var(--body);}
.insight-arrow{color:var(--muted);font-size:15px;margin-top:8px;transition:.16s ease;}
.insight-item:hover .insight-arrow{color:var(--brand-600);transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-sm);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .16s ease,border-color .16s ease;
}
.faq-item:hover{border-color:#D3DEEE;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:none;width:22px;height:22px;border-radius:6px;background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;font-size:15px;font-weight:600;transition:transform .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--brand-700);}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--body);}
.faq-answer p{margin:0;}

/* ---------- 转化条 ---------- */
.cta-section{padding:8px 0 56px;}
@media (min-width:1024px){.cta-section{padding:12px 0 88px;}}
.cta-card{
  background:var(--dark);border-radius:var(--radius-lg);padding:32px 22px;
  display:grid;grid-template-columns:1fr;gap:26px;
}
@media (min-width:1024px){.cta-card{grid-template-columns:1fr 1fr;gap:48px;padding:52px 48px;align-items:center;}}
.cta-card h2{margin:0;font-size:24px;line-height:1.3;font-weight:700;color:#fff;letter-spacing:-.01em;}
@media (min-width:1024px){.cta-card h2{font-size:30px;}}
.cta-card p{margin:12px 0 0;font-size:15px;line-height:1.8;color:#9FB0C6;}
.cta-form{display:flex;flex-direction:column;gap:12px;}
@media (min-width:640px){.cta-form{flex-direction:row;align-items:center;}}
.cta-input{
  flex:1;height:46px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;padding:0 16px;outline:0;min-width:0;
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.cta-input::placeholder{color:#8593A6;}
.cta-input:focus{background:rgba(255,255,255,.1);border-color:var(--brand-300);box-shadow:0 0 0 3px rgba(76,123,240,.25);}
.cta-hint{margin:12px 0 0;font-size:12px;color:#7C8CA3;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#9FB0C6;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr repeat(4,1fr);gap:32px;}}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-sub{color:#7C8CA3;}
.footer-brand .brand-divider{background:rgba(255,255,255,.16);}
.footer-desc{margin:18px 0 0;font-size:14px;line-height:1.8;color:#9FB0C6;max-width:26em;}
.footer-contact{margin:14px 0 0;font-size:13px;line-height:1.9;color:#7C8CA3;}
.footer-contact strong{color:#D6E0EE;font-weight:600;}
.footer-col h3{margin:0 0 14px;font-size:14px;font-weight:600;color:#fff;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#9FB0C6;text-decoration:none;transition:color .12s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.footer-copy{font-size:13px;color:#7C8CA3;}
.socials{display:flex;align-items:center;gap:10px;}
.social{
  width:36px;height:36px;border-radius:999px;border:1px solid rgba(255,255,255,.16);
  display:grid;place-items:center;color:#9FB0C6;transition:.16s ease;
}
.social:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(-1px);}
.social svg{width:16px;height:16px;}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
  .nav-links,.nav-search,.nav-right .btn{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-inner{height:56px;padding:0 20px;gap:12px;}
}
@media (max-width:1023px){
  .nav-drawer{max-width:100%;}
}