/* roulang page: index */
:root{
  --brand-600:#1263E0;
  --brand-700:#0B4FB0;
  --brand-100:#E6EFFD;
  --accent-500:#FF7A2F;
  --teal-500:#12B5A5;
  --ink-900:#0E1A2B;
  --ink-700:#33415A;
  --ink-500:#6B7A90;
  --line:#E3E9F2;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --navy:#0B1B33;
  --r-card:16px;
  --r-btn:12px;
  --shadow-card:0 1px 2px rgba(14,26,43,.04), 0 14px 34px -14px rgba(14,26,43,.14);
  --shadow-hover:0 2px 4px rgba(14,26,43,.06), 0 22px 44px -16px rgba(14,26,43,.20);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.85;
  padding-top:72px;
  padding-bottom:80px;
  overflow-x:hidden;
  transition:padding-top .25s ease-out;
  -webkit-font-smoothing:antialiased;
}
@media(min-width:1024px){ body{padding-bottom:0} }
body.nav-compact{padding-top:60px}
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}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea{font:inherit;color:inherit}
::selection{background:var(--brand-100);color:var(--brand-700)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#C9D7EA;border-radius:999px;border:3px solid var(--bg)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:10px}
[ id ]{scroll-margin-top:92px}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1024px){ .wrap{padding-left:24px;padding-right:24px} }
.skip-link{position:absolute;left:12px;top:-70px;z-index:200;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;transition:top .2s ease-out}
.skip-link:focus{top:12px}
.section{padding-top:56px;padding-bottom:56px}
@media(min-width:768px){ .section{padding-top:72px;padding-bottom:72px} }
@media(min-width:1024px){ .section{padding-top:96px;padding-bottom:96px} }
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand-600)}
.section-title{font-size:24px;line-height:1.3}
@media(min-width:1024px){ .section-title{font-size:30px} }
.section-sub{margin-top:12px;font-size:15.5px;color:var(--ink-500);max-width:640px}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:height .25s ease-out,box-shadow .25s ease-out;
}
body.nav-compact .site-header{height:60px;box-shadow:0 10px 26px -18px rgba(14,26,43,.45)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;flex:0 0 auto;transition:background-color .2s ease-out}
.logo:hover .logo-mark{background:var(--brand-700)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink-900);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand-600)}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;transition:color .2s ease-out,background-color .2s ease-out}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--brand-600)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
.btn svg{flex:0 0 auto}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -12px rgba(18,99,224,.85)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:#fff;color:var(--ink-900);border:1px solid #C9D7EA}
.btn-secondary:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px)}
.btn-secondary:active{transform:translateY(0)}
.btn-onDark{background:#fff;color:var(--navy)}
.btn-onDark:hover{background:var(--brand-100);transform:translateY(-1px)}
.btn-ghost{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);min-height:44px}
.btn-ghost svg{transition:transform .2s ease-out}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 13px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600}
.badge-neutral{background:#EEF2F8;color:var(--ink-500)}
.badge-dark{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.10);color:#9CC4FF;font-size:12.5px;font-weight:600;letter-spacing:.06em}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3DFEF}

/* Hero */
.hero-visual-wrap{position:relative}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:4/3;background:#DCE7F7;box-shadow:0 26px 52px -24px rgba(14,26,43,.38)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-mask{position:absolute;inset:0;background:linear-gradient(192deg,rgba(255,255,255,.10) 0%,rgba(11,27,51,.34) 100%)}
.hero-chip{position:absolute;border-radius:12px;border:3px solid #fff;object-fit:cover;aspect-ratio:16/10;box-shadow:0 18px 34px -14px rgba(14,26,43,.55);background:#E8EFF9}
.chip-a{width:38%;left:-4%;bottom:-7%}
.chip-b{width:30%;right:-4%;top:-8%}
@media(max-width:1023px){ .chip-a{left:3%;bottom:-5%} .chip-b{right:3%;top:-6%} }
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 0;margin-top:38px}
@media(min-width:640px){ .metrics{grid-template-columns:repeat(4,1fr)} }
.metrics li{padding-right:14px}
@media(min-width:640px){ .metrics li + li{border-left:1px solid var(--line);padding-left:22px} }
.metric-num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:28px;line-height:1.1;font-weight:700;color:var(--ink-900)}
@media(min-width:1024px){ .metric-num{font-size:34px} }
.metric-label{margin-top:7px;font-size:13.5px;line-height:1.5;color:var(--ink-500)}

/* 卖点三连 */
.feature-row{display:grid;gap:30px}
@media(min-width:768px){
  .feature-row{grid-template-columns:repeat(3,1fr);gap:0}
  .feature-item{padding:0 34px;border-left:1px solid var(--line)}
  .feature-item:first-child{padding-left:0;border-left:0}
  .feature-item:last-child{padding-right:0}
}
.feature-no{font-family:Inter,system-ui,sans-serif;font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--accent-500)}
.feature-item h3{margin-top:14px;font-size:19px;line-height:1.45}
.feature-item p{margin-top:9px;font-size:15px;line-height:1.8;color:var(--ink-500)}

/* 错位图文 */
.shot-wrap{position:relative}
.shot-blob{position:absolute;left:-16px;bottom:-16px;width:52%;height:56%;border-radius:16px;background:var(--brand-100);z-index:0}
.shot-frame{position:relative;z-index:1;border-radius:16px;overflow:hidden;aspect-ratio:16/11;background:#E3EBF7;box-shadow:var(--shadow-card)}
.shot-frame img{width:100%;height:100%;object-fit:cover}
.pt-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--ink-700)}
.pt-list li + li{margin-top:10px}
.pt-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-600)}

/* 深色状态带 */
.dark-band{border-radius:20px;background:var(--navy);padding:32px 22px}
@media(min-width:768px){ .dark-band{padding:44px 36px} }
@media(min-width:1024px){ .dark-band{padding:56px 48px} }
.dark-band h2{color:#fff;font-size:24px;line-height:1.32}
@media(min-width:1024px){ .dark-band h2{font-size:28px} }
.dark-band .dark-lede{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.66)}
.state-card{background:#12233F;border:1px solid #1E3355;border-radius:14px;padding:18px 20px;transition:border-color .2s ease-out,transform .2s ease-out}
.state-card:hover{border-color:#2C4670;transform:translateY(-2px)}
.state-label{font-size:13px;color:rgba(255,255,255,.56)}
.state-value{margin-top:10px;font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:21px;font-weight:700;color:#fff;display:flex;align-items:center;gap:9px}
.state-note{margin-top:7px;font-size:13px;line-height:1.6;color:rgba(255,255,255,.48)}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:0 0 auto}
.dot-teal{background:var(--teal-500);box-shadow:0 0 0 4px rgba(18,181,165,.18)}
.dot-accent{background:var(--accent-500);box-shadow:0 0 0 4px rgba(255,122,47,.18)}
.dot-brand{background:#5B9BFF;box-shadow:0 0 0 4px rgba(91,155,255,.18)}

/* 资讯列表 */
.news-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:768px){ .news-grid{grid-template-columns:repeat(2,1fr)} }
@media(min-width:1024px){ .news-grid{grid-template-columns:repeat(3,1fr)} }
.news-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E8EFF9}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-badge{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--brand-700);font-size:12px;font-weight:600}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;line-height:1.5;font-weight:700;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease-out}
.news-card:hover .news-title{color:var(--brand-600)}
.news-excerpt{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-500)}
.news-more{display:inline-flex;align-items:center;gap:5px;color:var(--brand-600);font-weight:600}
.empty-state{min-height:240px;border-radius:var(--r-card);background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:36px 20px;text-align:center}
.empty-state svg{opacity:.4}
.empty-state p{font-size:15px;color:var(--ink-500)}

/* 使用反馈 */
.score-row{display:flex;align-items:baseline;gap:10px;margin-top:22px;flex-wrap:wrap}
.score-num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:32px;font-weight:700;color:var(--ink-900);line-height:1}
.score-note{font-size:13.5px;color:var(--ink-500)}
.review-track{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.review-track::-webkit-scrollbar{height:6px}
.review-track::-webkit-scrollbar-thumb{background:#D5DFEC;border-radius:999px}
.review-card{flex:0 0 278px;scroll-snap-align:start;background:#fff;border-radius:14px;padding:22px;box-shadow:0 1px 2px rgba(14,26,43,.05)}
.review-card h3{font-size:15.5px;line-height:1.5;color:var(--ink-900)}
.review-card p{margin-top:10px;font-size:14.5px;line-height:1.78;color:var(--ink-500)}
.review-from{margin-top:16px;font-size:12.5px;color:var(--ink-500);display:flex;align-items:center;gap:7px}

/* FAQ */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{position:relative;width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:transparent;transition:background-color .2s ease-out}
.faq-item.is-open .faq-q::before{background:var(--brand-600)}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .25s ease-out,opacity .25s ease-out}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease-out}
.faq-item.is-open .faq-panel{grid-template-rows:1fr}
.faq-panel > div{overflow:hidden}
.faq-panel p{padding:0 56px 20px 20px;font-size:15px;line-height:1.82;color:var(--ink-500)}

/* 结尾转化 */
.cta-panel{max-width:1080px;margin:0 auto;border-radius:20px;background:var(--brand-100);padding:40px 22px;text-align:center}
@media(min-width:768px){ .cta-panel{padding:56px 48px} }
.cta-panel h2{font-size:24px;line-height:1.32}
@media(min-width:1024px){ .cta-panel h2{font-size:30px} }
.cta-panel p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--ink-500);max-width:620px;margin-left:auto;margin-right:auto}

/* 页脚 */
.site-footer{margin-top:0;background:var(--navy);color:rgba(255,255,255,.72);padding:56px 0 26px}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media(min-width:768px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px} }
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text em{color:#7FB2FF}
.footer-brand .logo-mark{background:rgba(255,255,255,.10)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:330px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li + li{margin-top:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color .2s ease-out}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.48)}

/* 移动端底部 Tab */
.mobile-tab{position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;background:rgba(255,255,255,.97);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
@media(min-width:1024px){ .mobile-tab{display:none} }
.tab-item{flex:1;min-height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11.5px;color:var(--ink-500);transition:color .2s ease-out}
.tab-item.is-active{color:var(--brand-600);font-weight:600}
.tab-ico{width:34px;height:26px;border-radius:999px;display:flex;align-items:center;justify-content:center;transition:background-color .2s ease-out}
.tab-item.is-active .tab-ico{background:var(--brand-100)}

/* 桌面底部转化条 */
.desk-bar{position:fixed;left:0;right:0;bottom:0;z-index:65;display:none;height:64px;background:var(--navy);box-shadow:0 -12px 30px -18px rgba(14,26,43,.6);transform:translateY(110%);transition:transform .3s ease-out}
@media(min-width:1024px){ .desk-bar{display:flex;align-items:center} }
.desk-bar.is-visible{transform:translateY(0)}
.bar-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:rgba(255,255,255,.65);transition:color .2s ease-out,background-color .2s ease-out}
.bar-close:hover{color:#fff;background:rgba(255,255,255,.1)}

/* roulang page: category1 */
:root{
  --brand-600:#1263E0;
  --brand-700:#0B4FB0;
  --brand-100:#E6EFFD;
  --accent-500:#FF7A2F;
  --teal-500:#12B5A5;
  --ink-900:#0E1A2B;
  --ink-700:#33415A;
  --ink-500:#6B7A90;
  --line:#E3E9F2;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --navy:#0B1B33;
  --r-card:16px;
  --r-btn:12px;
  --r-input:12px;
  --sh-card:0 1px 2px rgba(14,26,43,.04), 0 14px 34px -14px rgba(14,26,43,.14);
  --sh-hover:0 2px 4px rgba(14,26,43,.06), 0 22px 46px -18px rgba(14,26,43,.24);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.page-category{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
body.page-category img{max-width:100%;display:block;}
body.page-category a{color:var(--brand-600);}
body.page-category h1,body.page-category h2,body.page-category h3{color:var(--ink-900);margin:0;}
body.page-category p{margin:0;}
body.page-category ul{margin:0;padding:0;list-style:none;}
body.page-category button{font:inherit;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand-600);padding:10px 16px;border-radius:10px;z-index:200;box-shadow:var(--sh-card);}
.skip-link:focus{left:12px;top:12px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease-out,background .25s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(14,26,43,.35);background:rgba(255,255,255,.94);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease-out;}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink-900);font-weight:800;font-size:17px;letter-spacing:-.01em;min-height:44px;}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--brand-600);color:#fff;display:grid;place-items:center;flex:0 0 auto;}
.logo-text{white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand-600);}
.nav-menu{display:flex;align-items:center;gap:4px;margin:0 auto;}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;font-size:15px;color:var(--ink-700);text-decoration:none;border-radius:10px;transition:color .2s ease-out,background .2s ease-out;}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100);}
.nav-link:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--brand-600);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;font-size:15px;font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;text-decoration:none;cursor:pointer;transition:transform .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,color .2s ease-out,border-color .2s ease-out;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -12px rgba(18,99,224,.85);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(18,99,224,.9);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(18,99,224,.85);}
.btn-outline{background:#fff;border-color:#C9D7EA;color:var(--ink-900);}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -12px rgba(255,122,47,.9);}
.btn-accent:hover{background:#F0681A;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0 4px;box-shadow:none;}
.btn-ghost .ico{transition:transform .2s ease-out;}
.btn-ghost:hover .ico{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.btn[disabled]{opacity:.5;pointer-events:none;}

/* ---------- badge ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--brand-100);color:var(--brand-700);line-height:1.5;}
.badge-neutral{background:#EEF2F8;color:var(--ink-700);}
.badge-teal{background:rgba(18,181,165,.12);color:#0B877A;}

/* ---------- hero ---------- */
.cat-hero{padding:64px 0 76px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--line);}
.cat-hero .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.cat-hero h1{font-size:clamp(30px,4vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin:18px 0 16px;}
.cat-hero .lead{font-size:17px;line-height:1.85;color:var(--ink-700);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-metrics{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:34px;}
.metric{padding:0 22px;}
.metric:first-child{padding-left:0;}
.metric + .metric{border-left:1px solid var(--line);}
.metric .num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--ink-900);line-height:1.1;}
.metric .num span{font-size:15px;font-weight:600;color:var(--brand-600);margin-left:2px;}
.metric .cap{font-size:13px;color:var(--ink-500);margin-top:4px;}
.hero-media{position:relative;}
.hero-media .shot{border-radius:20px;overflow:hidden;box-shadow:var(--sh-card);background:#fff;}
.hero-media .shot img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.status-card{position:absolute;left:-16px;bottom:-20px;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;box-shadow:var(--sh-card);}
.status-dot{width:10px;height:10px;border-radius:50%;background:var(--teal-500);box-shadow:0 0 0 4px rgba(18,181,165,.16);flex:0 0 auto;}
.status-card .t1{font-size:14px;font-weight:600;color:var(--ink-900);line-height:1.5;}
.status-card .t2{font-size:12.5px;color:var(--ink-500);line-height:1.5;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head .sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-500);}
.section-head.left-line{padding-left:18px;border-left:4px solid var(--brand-600);}

/* ---------- entry cards ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.entry-card{display:flex;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-card);transition:transform .25s ease-out,box-shadow .25s ease-out;}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.entry-card .body{flex:1 1 auto;min-width:0;}
.entry-card h3{font-size:20px;line-height:1.45;font-weight:600;}
.entry-card p{margin-top:10px;font-size:14.5px;color:var(--ink-500);line-height:1.8;}
.entry-card .btn{margin-top:18px;}
.entry-card .thumb{flex:0 0 132px;border-radius:14px;overflow:hidden;border:1px solid var(--line);}
.entry-card .thumb img{width:132px;height:96px;object-fit:cover;transition:transform .3s ease-out;}
.entry-card:hover .thumb img{transform:scale(1.04);}
.entry-tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--teal-500);}
.entry-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal-500);}

/* ---------- timeline ---------- */
.timeline{max-width:840px;}
.step{position:relative;display:grid;grid-template-columns:52px 1fr;gap:22px;padding-bottom:38px;}
.step:last-child{padding-bottom:0;}
.step::before{content:"";position:absolute;left:25px;top:52px;bottom:6px;width:1px;background:var(--line);}
.step:last-child::before{display:none;}
.step-num{width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand-600);font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-weight:700;font-size:16px;display:grid;place-items:center;position:relative;z-index:1;transition:all .25s ease-out;}
.step:hover .step-num{border-color:var(--brand-600);box-shadow:0 0 0 5px var(--brand-100);}
.step.is-final .step-num{background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.step.is-final:hover .step-num{box-shadow:0 0 0 5px rgba(255,122,47,.16);}
.step-body h3{font-size:19px;line-height:1.45;font-weight:600;}
.step-body p{margin-top:8px;font-size:15px;color:var(--ink-700);line-height:1.85;max-width:660px;}

/* ---------- tip block ---------- */
.tip-block{display:flex;align-items:center;gap:26px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand-600);border-radius:var(--r-card);padding:28px 30px;box-shadow:var(--sh-card);}
.tip-icon{flex:0 0 auto;width:52px;height:52px;border-radius:14px;background:var(--brand-100);color:var(--brand-600);display:grid;place-items:center;}
.tip-body{flex:1 1 auto;min-width:0;}
.tip-body h3{font-size:19px;font-weight:600;line-height:1.45;}
.tip-body p{margin-top:8px;font-size:14.5px;color:var(--ink-500);line-height:1.8;}
.copy-toast{display:none;margin-top:12px;font-size:13px;color:#0B877A;font-weight:600;}
.copy-toast.is-show{display:block;}

/* ---------- cta band ---------- */
.cta-band{max-width:1080px;margin:0 auto;background:var(--brand-100);border-radius:20px;padding:52px 44px;text-align:center;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{margin:16px auto 0;max-width:620px;font-size:15.5px;color:var(--ink-700);line-height:1.85;}
.cta-band .actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.site-footer .logo{color:#fff;font-size:17px;}
.site-footer .logo .logo-mark{background:var(--brand-600);}
.site-footer .logo .logo-text em{color:#8FB8F5;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:340px;color:rgba(255,255,255,.66);}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;line-height:1.5;}
.footer-col li{margin-bottom:4px;}
.footer-col a{display:inline-block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.7);text-decoration:none;transition:color .2s ease-out;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-col a:focus-visible{outline:2px solid #fff;outline-offset:2px;border-radius:4px;}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- mobile tab ---------- */
.mobile-tab{display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);}
.mobile-tab .tabs{display:grid;grid-template-columns:repeat(4,1fr);height:60px;}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--ink-500);text-decoration:none;min-height:44px;}
.tab-item .tab-ico{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;transition:background .2s ease-out,color .2s ease-out;}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active .tab-ico{background:var(--brand-100);}
.tab-item.tab-cta .tab-ico{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px -10px rgba(18,99,224,.9);}
.tab-item.tab-cta{color:var(--brand-700);font-weight:600;}
.tab-item:focus-visible{outline:2px solid var(--brand-600);outline-offset:-2px;border-radius:10px;}

/* ---------- sticky desktop cta ---------- */
.sticky-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;height:64px;background:var(--navy);color:#fff;transform:translateY(100%);transition:transform .3s ease-out;box-shadow:0 -10px 30px -18px rgba(11,27,51,.9);}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-cta .inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:20px;}
.sticky-cta .phrase{font-size:15px;font-weight:600;color:#fff;}
.sticky-cta .spacer{flex:1 1 auto;}
.sticky-close{background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.8);width:34px;height:34px;border-radius:10px;display:grid;place-items:center;cursor:pointer;transition:all .2s ease-out;}
.sticky-close:hover{color:#fff;border-color:rgba(255,255,255,.7);}
.sticky-close:focus-visible{outline:2px solid #fff;outline-offset:2px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);padding:22px 0 0;}
.breadcrumb a{color:var(--ink-500);text-decoration:none;}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C4D0E0;}
.breadcrumb .current{color:var(--ink-700);}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-menu{display:none;}
  .header-inner{height:64px;}
  .mobile-tab{display:block;}
  .sticky-cta{display:none !important;}
  .cat-hero .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{max-width:560px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .section{padding:72px 0;}
  .cat-hero{padding:40px 0 56px;}
  .entry-grid{grid-template-columns:1fr;}
  .entry-card{flex-direction:column-reverse;align-items:stretch;padding:22px;}
  .entry-card .thumb{flex:0 0 auto;}
  .entry-card .thumb img{width:100%;height:150px;}
  .entry-card .btn{width:100%;}
  .tip-block{flex-direction:column;align-items:flex-start;padding:24px;}
  .tip-block .btn{width:100%;}
  .cta-band{padding:36px 22px;}
  .cta-band .actions .btn{width:100%;}
  .step{grid-template-columns:44px 1fr;gap:16px;}
  .step-num{width:44px;height:44px;font-size:15px;}
  .step::before{left:21px;top:46px;}
  .hero-metrics{gap:0;flex-wrap:wrap;}
  .metric{padding:0 16px;}
  .metric .num{font-size:26px;}
  .status-card{left:0;bottom:-14px;padding:12px 14px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .metric{padding:0 12px;}
}

/* roulang page: article */
:root{
  --brand-600:#1263E0;
  --brand-700:#0B4FB0;
  --brand-100:#E6EFFD;
  --accent-500:#FF7A2F;
  --teal-500:#12B5A5;
  --ink-900:#0E1A2B;
  --ink-700:#33415A;
  --ink-500:#6B7A90;
  --line:#E3E9F2;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --dark:#0B1B33;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 1px 2px rgba(14,26,43,.04), 0 14px 34px -14px rgba(14,26,43,.14);
  --shadow-card-hover:0 2px 6px rgba(14,26,43,.07), 0 24px 46px -18px rgba(14,26,43,.24);
  --gutter:24px;
}
*,*::before,*::after{ box-sizing:border-box; border:0 solid var(--line); }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{ margin:0; }
ul,ol{ padding-left:0; list-style:none; }
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; }
.num{ font-variant-numeric:tabular-nums; font-feature-settings:"tnum"; }
.wrap{ width:100%; max-width:1200px; margin:0 auto; padding:0 var(--gutter); }
.skip-link{
  position:absolute; left:-9999px; top:0; z-index:100;
  background:var(--brand-600); color:#fff; padding:10px 18px; border-radius:0 0 12px 0; font-size:14px;
}
.skip-link:focus{ left:0; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:70;
  background:#fff; border-bottom:1px solid var(--line);
  transition:height .25s ease-out, box-shadow .25s ease-out, background .25s ease-out;
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:72px; transition:height .25s ease-out; }
.site-header.is-scrolled{ box-shadow:0 10px 28px -20px rgba(14,26,43,.45); background:rgba(255,255,255,.95); backdrop-filter:blur(8px); }
.site-header.is-scrolled .header-inner{ height:60px; }
.logo{ display:inline-flex; align-items:center; gap:10px; font-weight:800; color:var(--ink-900); font-size:18px; letter-spacing:-.01em; }
.logo-mark{ width:34px; height:34px; border-radius:10px; background:var(--brand-600); color:#fff; display:inline-flex; align-items:center; justify-content:center; }
.logo-text em{ font-style:normal; color:var(--brand-600); }
.nav-menu{ display:none; align-items:center; gap:4px; }
.nav-link{ position:relative; padding:9px 14px; border-radius:10px; font-size:15px; color:var(--ink-700); transition:color .2s ease-out, background .2s ease-out; }
.nav-link:hover{ color:var(--brand-600); background:var(--brand-100); }
.nav-link.is-active{ color:var(--brand-600); font-weight:600; }
.nav-link.is-active::after{ content:''; position:absolute; left:14px; right:14px; bottom:3px; height:2px; border-radius:2px; background:var(--brand-600); }
.header-cta{ display:none; align-items:center; gap:12px; }
@media (min-width:1024px){
  .nav-menu{ display:flex; }
  .header-cta{ display:flex; }
  body{ padding-bottom:0; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:46px; padding:0 22px; border-radius:var(--radius-btn);
  font-size:15px; font-weight:600; cursor:pointer; white-space:nowrap;
  border:1px solid transparent;
  transition:background .2s ease-out, color .2s ease-out, border-color .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out;
}
.btn:active{ transform:translateY(0); box-shadow:none; }
.btn:focus-visible{ outline:2px solid var(--brand-600); outline-offset:2px; }
.btn[disabled], .btn.is-disabled{ opacity:.5; pointer-events:none; }
.btn-primary{ background:var(--brand-600); color:#fff; box-shadow:0 10px 22px -14px rgba(18,99,224,.85); }
.btn-primary:hover{ background:var(--brand-700); transform:translateY(-1px); }
.btn-secondary{ background:#fff; border-color:#C9D7EA; color:var(--ink-900); }
.btn-secondary:hover{ border-color:var(--brand-600); color:var(--brand-600); transform:translateY(-1px); }
.btn-accent{ background:var(--accent-500); color:#fff; box-shadow:0 10px 22px -14px rgba(255,122,47,.85); }
.btn-accent:hover{ filter:brightness(.95); transform:translateY(-1px); }
.btn-ghost{ background:transparent; color:var(--brand-600); padding:0 2px; height:auto; }
.btn-ghost .arrow{ transition:transform .2s ease-out; }
.btn-ghost:hover .arrow{ transform:translateX(4px); }
.btn-sm{ height:40px; padding:0 16px; font-size:14px; }
.btn-block{ width:100%; }

/* ---------- chips ---------- */
.chip{
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 12px; border-radius:999px;
  font-size:12.5px; font-weight:600; letter-spacing:.01em;
  background:var(--brand-100); color:var(--brand-700);
}
.chip-neutral{ background:#EDF1F7; color:var(--ink-500); }
.chip-accent{ background:#FFF0E6; color:#C4551A; }
.dot-live{ width:7px; height:7px; border-radius:50%; background:var(--teal-500); display:inline-block; }

/* ---------- article head ---------- */
.article-head-wrap{ background:#fff; border-bottom:1px solid var(--line); padding:28px 0 40px; }
.breadcrumb{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--ink-500); flex-wrap:wrap; }
.breadcrumb a{ color:var(--ink-500); transition:color .2s ease-out; }
.breadcrumb a:hover{ color:var(--brand-600); }
.breadcrumb .sep{ color:#C3CEDD; }
.breadcrumb .current{ color:var(--ink-700); max-width:min(560px,60vw); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.article-head{ margin-top:26px; max-width:900px; }
.article-head h1{
  margin-top:14px;
  font-size:clamp(28px,3.6vw,42px); line-height:1.25; font-weight:800;
  letter-spacing:-.02em; color:var(--ink-900);
}
.meta-row{ margin-top:18px; display:flex; align-items:center; gap:12px; flex-wrap:wrap; font-size:13px; color:var(--ink-500); }
.meta-row .sep{ width:4px; height:4px; border-radius:50%; background:#C9D5E5; }
.meta-row span{ display:inline-flex; align-items:center; gap:6px; }
.article-cover{ margin-top:32px; border-radius:var(--radius-card); overflow:hidden; background:#E9EFF8; }
.article-cover img{ width:100%; aspect-ratio:16/9; object-fit:cover; }

/* ---------- layout ---------- */
.section{ padding:56px 0; }
@media (min-width:768px){ .section{ padding:72px 0; } }
@media (min-width:1024px){ .section{ padding:88px 0; } }
.article-layout{ display:grid; grid-template-columns:1fr; gap:40px; }
.article-main{ min-width:0; max-width:820px; }
.article-side{ min-width:0; }
@media (min-width:1024px){
  .article-layout{ grid-template-columns:minmax(0,1fr) 300px; gap:56px; align-items:start; }
  .article-side{ position:sticky; top:96px; }
}

/* ---------- article body ---------- */
.article-body{ font-size:16.5px; line-height:1.88; color:var(--ink-700); }
.article-body > *:first-child{ margin-top:0; }
.article-body p{ margin:0 0 18px; }
.article-body strong{ color:var(--ink-900); font-weight:700; }
.article-body h2{
  position:relative; margin:40px 0 16px; padding-left:14px;
  font-size:clamp(21px,2.4vw,25px); line-height:1.4; font-weight:700; color:var(--ink-900);
}
.article-body h2::before{ content:''; position:absolute; left:0; top:.28em; bottom:.28em; width:4px; border-radius:4px; background:var(--brand-600); }
.article-body h3{ margin:28px 0 12px; font-size:19px; line-height:1.5; font-weight:700; color:var(--ink-900); }
.article-body h4{ margin:22px 0 10px; font-size:17px; font-weight:700; color:var(--ink-900); }
.article-body ul{ margin:0 0 18px; }
.article-body ul li{ position:relative; padding-left:20px; margin-bottom:8px; }
.article-body ul li::before{ content:''; position:absolute; left:3px; top:.74em; width:6px; height:6px; border-radius:50%; background:var(--brand-600); }
.article-body ol{ margin:0 0 18px; padding-left:22px; list-style:decimal; }
.article-body ol li{ margin-bottom:8px; padding-left:4px; }
.article-body ol li::marker{ color:var(--brand-600); font-weight:700; }
.article-body blockquote{
  margin:22px 0; padding:16px 20px; border-left:3px solid var(--brand-600);
  background:var(--brand-100); border-radius:0 12px 12px 0; color:var(--ink-700);
}
.article-body blockquote p:last-child{ margin-bottom:0; }
.article-body img{ width:100%; height:auto; border-radius:12px; margin:22px 0; }
.article-body figure{ margin:22px 0; }
.article-body figcaption{ margin-top:8px; font-size:12.5px; color:var(--ink-500); text-align:center; }
.article-body a{ color:var(--brand-600); border-bottom:1px solid rgba(18,99,224,.35); }
.article-body a:hover{ border-bottom-color:var(--brand-600); }
.article-body code{ background:#F0F3F8; color:#0B4FB0; padding:2px 6px; border-radius:6px; font-size:14.5px; }
.article-body pre{ background:#F5F7FA; border:1px solid var(--line); border-radius:12px; padding:16px 18px; overflow-x:auto; font-size:14px; line-height:1.7; margin:20px 0; }
.article-body pre code{ background:none; padding:0; color:var(--ink-900); }
.article-body .table-scroll{ overflow-x:auto; margin:20px 0; border:1px solid var(--line); border-radius:12px; }
.article-body table{ width:100%; border-collapse:collapse; font-size:14.5px; min-width:520px; }
.article-body th{ background:var(--brand-100); color:var(--brand-700); font-weight:700; text-align:left; padding:12px 16px; }
.article-body td{ padding:12px 16px; border-top:1px solid var(--line); }
.article-body hr{ border-top:1px solid var(--line); margin:28px 0; }

/* ---------- tags / nav-links ---------- */
.tag-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:36px; padding-top:26px; border-top:1px solid var(--line); }
.tag-row .label{ font-size:13px; color:var(--ink-500); margin-right:2px; align-self:center; }
.tag{ display:inline-flex; align-items:center; padding:5px 13px; border-radius:999px; font-size:13px; background:#fff; border:1px solid var(--line); color:var(--ink-700); transition:all .2s ease-out; }
.tag:hover{ border-color:var(--brand-600); color:var(--brand-600); background:var(--brand-100); }
.back-list{ margin-top:28px; }

/* ---------- sidebar cards ---------- */
.side-card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-card); padding:22px; box-shadow:var(--shadow-card); }
.side-card + .side-card{ margin-top:20px; }
.side-title{ font-size:15px; font-weight:700; color:var(--ink-900); margin-bottom:14px; display:flex; align-items:center; gap:8px; }
.side-list li{ position:relative; padding-left:18px; margin-bottom:10px; font-size:14px; line-height:1.7; color:var(--ink-700); }
.side-list li::before{ content:''; position:absolute; left:2px; top:.72em; width:5px; height:5px; border-radius:50%; background:var(--brand-600); }
.side-links a{ display:flex; align-items:center; justify-content:space-between; gap:10px; padding:11px 0; font-size:14.5px; color:var(--ink-700); border-bottom:1px dashed var(--line); transition:color .2s ease-out; }
.side-links a:last-child{ border-bottom:0; padding-bottom:0; }
.side-links a:first-child{ padding-top:2px; }
.side-links a:hover{ color:var(--brand-600); }
.side-status{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--ink-500); }
.stat-mini{ display:flex; align-items:baseline; justify-content:space-between; padding:9px 0; border-top:1px solid var(--line); font-size:13.5px; color:var(--ink-500); }
.stat-mini b{ font-size:16px; color:var(--ink-900); font-weight:700; }
.stat-mini:first-of-type{ border-top:0; }

/* ---------- cards grid ---------- */
.grid-3{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:640px){ .grid-3{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .grid-3{ grid-template-columns:repeat(3,1fr); } }
.grid-2{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:768px){ .grid-2{ grid-template-columns:repeat(2,1fr); } }
.card{
  display:flex; flex-direction:column;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-card);
  overflow:hidden; box-shadow:var(--shadow-card);
  transition:transform .25s ease-out, box-shadow .25s ease-out, border-color .25s ease-out;
}
.card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-card-hover); border-color:#D5E1F2; }
.card-media{ aspect-ratio:16/10; overflow:hidden; background:#E9EFF8; }
.card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .3s ease-out; }
.card:hover .card-media img{ transform:scale(1.03); }
.card-body{ padding:22px 24px 24px; display:flex; flex-direction:column; gap:10px; flex:1; }
.card-title{ font-size:17.5px; line-height:1.5; font-weight:700; color:var(--ink-900); transition:color .2s ease-out; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card:hover .card-title{ color:var(--brand-600); }
.card-desc{ font-size:14.5px; line-height:1.75; color:var(--ink-500); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card-meta{ margin-top:auto; padding-top:14px; border-top:1px solid var(--line); display:flex; align-items:center; justify-content:space-between; font-size:13px; color:var(--ink-500); }
.card-meta .go{ color:var(--brand-600); display:inline-flex; align-items:center; gap:4px; }

/* ---------- section head ---------- */
.sec-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:28px; flex-wrap:wrap; }
.sec-head h2{ font-size:clamp(22px,2.6vw,28px); line-height:1.35; font-weight:700; color:var(--ink-900); letter-spacing:-.01em; }
.sec-head p{ margin-top:8px; font-size:14.5px; color:var(--ink-500); }

/* ---------- empty ---------- */
.empty-state{
  min-height:240px; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:10px; text-align:center; padding:40px 24px;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-card);
}
.empty-state svg{ color:rgba(18,99,224,.4); }
.empty-title{ font-size:17px; font-weight:700; color:var(--ink-900); }
.empty-desc{ font-size:14.5px; color:var(--ink-500); max-width:420px; }

/* ---------- cta ---------- */
.cta-band{ background:var(--brand-100); border-radius:20px; padding:44px 32px; display:flex; align-items:center; justify-content:space-between; gap:28px; flex-wrap:wrap; }
.cta-band h2{ font-size:clamp(21px,2.4vw,26px); font-weight:700; color:var(--ink-900); }
.cta-band p{ margin-top:10px; font-size:15px; color:var(--ink-700); max-width:560px; }
.cta-actions{ display:flex; gap:12px; flex-wrap:wrap; }

/* ---------- footer ---------- */
.site-footer{ background:var(--dark); color:rgba(255,255,255,.72); padding:64px 0 0; margin-top:20px; }
.site-footer .logo{ color:#fff; }
.site-footer .logo-mark{ background:var(--brand-600); }
.site-footer .logo-text em{ color:#8FBBFF; }
.footer-grid{ display:grid; grid-template-columns:1fr; gap:34px; padding-bottom:44px; }
@media (min-width:640px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px; } }
.footer-brand p{ margin-top:16px; font-size:14px; line-height:1.8; color:rgba(255,255,255,.66); max-width:320px; }
.footer-col h3{ font-size:15px; font-weight:700; color:#fff; margin-bottom:16px; }
.footer-col ul li{ margin-bottom:11px; }
.footer-col ul a{ font-size:14px; color:rgba(255,255,255,.7); transition:color .2s ease-out; }
.footer-col ul a:hover{ color:#fff; text-decoration:underline; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.12); padding:20px 0 26px; display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap; font-size:13px; color:rgba(255,255,255,.55); }

/* ---------- mobile tab ---------- */
.tab-bar{
  position:fixed; left:0; right:0; bottom:0; z-index:80;
  display:flex; align-items:stretch;
  background:rgba(255,255,255,.98); border-top:1px solid var(--line);
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(14,26,43,.5);
}
.tab-item{ flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px; font-size:11.5px; color:var(--ink-500); min-height:44px; transition:color .2s ease-out; }
.tab-item .ico{ width:34px; height:24px; border-radius:999px; display:inline-flex; align-items:center; justify-content:center; transition:background .2s ease-out; }
.tab-item:hover{ color:var(--brand-600); }
.tab-item.is-active{ color:var(--brand-600); font-weight:600; }
.tab-item.is-active .ico{ background:var(--brand-100); }
@media (min-width:1024px){ .tab-bar{ display:none; } }

/* ---------- desktop float bar ---------- */
.float-bar{
  position:fixed; left:0; right:0; bottom:0; z-index:75;
  display:none; align-items:center; justify-content:center; gap:22px;
  height:64px; background:var(--dark); color:#fff;
  transform:translateY(120%); transition:transform .28s ease-out;
}
@media (min-width:1024px){ .float-bar{ display:flex; } }
.float-bar.is-visible{ transform:translateY(0); }
.float-bar .msg{ font-size:14.5px; color:rgba(255,255,255,.86); }
.float-bar .close{ background:transparent; border:0; color:rgba(255,255,255,.6); cursor:pointer; padding:8px; line-height:0; border-radius:8px; }
.float-bar .close:hover{ color:#fff; }
.float-bar .close:focus-visible{ outline:2px solid #fff; outline-offset:2px; }

/* ---------- back to top ---------- */
.to-top{
  position:fixed; right:18px; bottom:calc(88px + env(safe-area-inset-bottom)); z-index:70;
  width:46px; height:46px; border-radius:14px; cursor:pointer;
  background:#fff; border:1px solid var(--line); color:var(--brand-600);
  display:none; align-items:center; justify-content:center;
  box-shadow:var(--shadow-card); transition:transform .2s ease-out, box-shadow .2s ease-out;
}
.to-top.is-visible{ display:inline-flex; }
.to-top:hover{ transform:translateY(-2px); box-shadow:var(--shadow-card-hover); }
.to-top:focus-visible{ outline:2px solid var(--brand-600); outline-offset:2px; }
@media (min-width:1024px){ .to-top{ right:28px; bottom:88px; } }

/* ---------- mock dashboard strip ---------- */
.strip{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:14px; overflow:hidden; }
@media (min-width:768px){ .strip{ grid-template-columns:repeat(4,1fr); } }
.strip-item{ background:#fff; padding:16px 18px; }
.strip-item .k{ font-size:12.5px; color:var(--ink-500); }
.strip-item .v{ margin-top:4px; font-size:18px; font-weight:700; color:var(--ink-900); }

@media (max-width:519px){
  :root{ --gutter:20px; }
  .cta-band{ padding:32px 20px; border-radius:16px; }
  .card-body{ padding:18px 18px 20px; }
}

/* roulang page: category3 */
:root{
  --brand-600:#1263E0;
  --brand-700:#0B4FB0;
  --brand-100:#E6EFFD;
  --accent-500:#FF7A2F;
  --teal-500:#12B5A5;
  --ink-900:#0E1A2B;
  --ink-700:#33415A;
  --ink-500:#6B7A90;
  --line:#E3E9F2;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --dark:#0B1B33;
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(14,26,43,.04), 0 14px 34px -14px rgba(14,26,43,.14);
  --shadow-hover:0 2px 6px rgba(14,26,43,.06), 0 24px 46px -18px rgba(14,26,43,.22);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;font-size:14px;
}
.skip-link:focus{left:0;color:#fff;}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  transition:box-shadow .25s ease-out,background .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.95);
  box-shadow:0 10px 30px -22px rgba(14,26,43,.55);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:72px;transition:height .25s ease-out;
}
.site-header.is-scrolled .header-inner{height:60px;}

.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;letter-spacing:-.01em;
  color:var(--ink-900);
}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-600);color:#fff;
  display:grid;place-items:center;flex:0 0 auto;
}
.logo-text em{font-style:normal;color:var(--brand-600);}

.nav-menu{display:none;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--ink-700);
  padding:6px 2px;transition:color .2s ease-out;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--brand-600);border-radius:2px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -12px rgba(18,99,224,.75);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px -8px rgba(18,99,224,.7);}
.btn-secondary{background:#fff;color:var(--ink-900);border-color:#C9D7EA;}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600);background:#fff;}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0;min-height:44px;}
.btn-ghost .arrow{transition:transform .22s ease-out;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;transform:none;cursor:not-allowed;}

/* ---------- 通用 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:12px;color:var(--ink-500);font-size:15px;max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-700);background:var(--brand-100);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--teal-500);}

.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-neutral{background:#EEF2F8;color:var(--ink-700);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-500);padding:24px 0 0;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C4CFDE;}
.breadcrumb .current{color:var(--ink-700);}

/* ---------- 页头 ---------- */
.page-hero{padding:26px 0 20px;}
.hero-grid{
  display:grid;grid-template-columns:1fr;gap:32px;align-items:center;
  padding:32px 0 8px;
}
.page-hero h1{
  font-size:clamp(30px,4.6vw,44px);
  line-height:1.22;font-weight:800;letter-spacing:-.02em;
  margin:14px 0 0;
}
.hero-sub{
  margin-top:16px;font-size:16px;line-height:1.85;
  color:var(--ink-700);max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);background:#DBE6F5;
  aspect-ratio:16/11;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,27,51,.06),rgba(11,27,51,.24));
}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;grid-template-columns:1fr;gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);margin-top:36px;overflow:hidden;
}
.metric{padding:24px 26px;border-bottom:1px solid var(--line);}
.metric:last-child{border-bottom:0;}
.metric .num{
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--ink-900);line-height:1.1;
}
.metric .num span{font-size:16px;font-weight:600;color:var(--brand-600);margin-left:4px;}
.metric .label{font-size:14px;color:var(--ink-500);margin-top:8px;}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:40px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-title{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;letter-spacing:-.01em;
  margin-bottom:20px;padding-left:16px;position:relative;
}
.faq-group-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--brand-600);
}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.faq-item:hover{border-color:#CFDCEF;}
.faq-item.is-open{border-color:#C6D8F3;box-shadow:var(--shadow);}
.faq-q{
  position:relative;width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px 18px 26px;min-height:56px;
  background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.55;
  transition:color .2s ease-out;
}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-600);
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;
  transition:transform .22s ease-out,background .22s ease-out,color .22s ease-out;
}
.faq-item.is-open .faq-icon{background:var(--brand-600);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a-inner{
  padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--ink-700);
}
.faq-a-inner .tip{
  display:block;margin-top:10px;font-size:14px;color:var(--ink-500);
}

/* ---------- 表单 ---------- */
.form-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.form-card{
  max-width:720px;margin:0 auto;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr;gap:20px;}
.field{margin-bottom:20px;}
.field:last-of-type{margin-bottom:0;}
.field label{
  display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;
}
.field .hint{font-weight:400;color:var(--ink-500);font-size:13px;margin-left:6px;}
.field input,.field textarea{
  width:100%;min-height:46px;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink-900);line-height:1.6;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{min-height:132px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-500);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(18,99,224,.15);
}
.field.has-error input,.field.has-error textarea{border-color:#D93A2B;}
.err{display:none;color:#D93A2B;font-size:13px;margin-top:6px;}
.err.show{display:block;}
.form-actions{margin-top:26px;}
.form-ok{
  display:none;margin-top:20px;padding:16px 18px;border-radius:var(--radius-sm);
  background:#E8F7F5;color:#0B6B60;font-size:14.5px;border:1px solid #C6EAE5;
}
.form-ok.show{display:block;}
.form-note{margin-top:16px;font-size:13px;color:var(--ink-500);}

/* ---------- 联系三宫格 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CFDCEF;}
.contact-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;margin-bottom:16px;
}
.contact-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.contact-card p{font-size:14.5px;color:var(--ink-500);}

/* ---------- CTA ---------- */
.cta-band{
  max-width:1080px;margin:0 auto;
  background:var(--brand-100);border-radius:24px;
  padding:56px 32px;text-align:center;
}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em;}
.cta-band p{margin:14px auto 0;max-width:620px;color:var(--ink-700);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo-text em{color:#8FBBFF;}
.footer-brand .logo-mark{background:var(--brand-600);}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:420px;color:rgba(255,255,255,.7);}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.01em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.7);font-size:14.5px;transition:color .2s ease-out;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:48px;padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom p{margin:0;}

/* ---------- 底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;align-items:flex-end;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -20px rgba(14,26,43,.5);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:60px;padding:8px 4px;font-size:11px;color:var(--ink-500);
  transition:color .2s ease-out;
}
.tab-item:hover{color:var(--brand-600);}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active .tab-icon-wrap{background:var(--brand-100);}
.tab-icon-wrap{
  width:36px;height:26px;border-radius:999px;display:grid;place-items:center;
  transition:background .2s ease-out;
}
.tab-center .tab-icon-circle{
  width:52px;height:52px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;margin-top:-22px;
  border:3px solid #fff;
  box-shadow:0 12px 26px -10px rgba(18,99,224,.75);
  transition:transform .22s ease-out,background .22s ease-out;
}
.tab-center:hover .tab-icon-circle{background:var(--brand-700);transform:translateY(-1px);}
.tab-center span{color:var(--ink-500);}
.tab-center.is-active span{color:var(--brand-600);font-weight:600;}

body{padding-bottom:76px;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .form-row{grid-template-columns:1fr 1fr;}
  .form-row .field-full{grid-column:1 / -1;}
  .metrics{grid-template-columns:1fr 1fr;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .metric:nth-child(odd){border-right:1px solid var(--line);}
  .metric:nth-child(3){border-bottom:0;}
  .contact-grid{grid-template-columns:1fr 1fr;}
}

@media (min-width:768px){
  .wrap{padding:0 24px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;}
}

@media (min-width:1024px){
  .nav-menu{display:flex;}
  body{padding-bottom:0;}
  .tabbar{display:none;}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:48px;padding:44px 0 12px;}
  .metrics{grid-template-columns:repeat(4,1fr);}
  .metric{border-bottom:0;border-right:1px solid var(--line);}
  .metric:last-child{border-right:0;}
  .metric:nth-child(odd){border-right:1px solid var(--line);}
  .contact-grid{grid-template-columns:repeat(3,1fr);}
  .form-card{padding:44px;}
}

@media (min-width:1280px){
  .section{padding:104px 0;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
    --brand-600:#1263E0;
    --brand-700:#0B4FB0;
    --brand-100:#E6EFFD;
    --accent-500:#FF7A2F;
    --teal-500:#12B5A5;
    --ink-900:#0E1A2B;
    --ink-700:#33415A;
    --ink-500:#6B7A90;
    --line:#E3E9F2;
    --bg:#F4F7FC;
    --card:#FFFFFF;
    --deep:#0B1B33;
    --r-card:16px;
    --r-btn:12px;
    --shadow-card:0 1px 2px rgba(14,26,43,.04), 0 14px 34px -14px rgba(14,26,43,.14);
    --shadow-hover:0 2px 4px rgba(14,26,43,.05), 0 20px 42px -16px rgba(14,26,43,.2);
  }

  *{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink-700);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand-600);text-decoration:none;}
  a:hover{color:var(--brand-700);}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  button{font-family:inherit;}
  :focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

  .wrap{max-width:1200px;margin:0 auto;padding:0 24px;}

  .skip-link{
    position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand-600);
    padding:10px 16px;border-radius:0 0 12px 0;z-index:200;font-size:14px;
  }
  .skip-link:focus{left:0;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(180%) blur(8px);
    -webkit-backdrop-filter:saturate(180%) blur(8px);
    transition:box-shadow .25s ease-out,background .25s ease-out;
  }
  .site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(14,26,43,.45);}
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:72px;transition:height .25s ease-out;
  }
  .site-header.is-scrolled .header-inner{height:60px;}

  .logo{display:flex;align-items:center;gap:10px;flex:none;}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;background:var(--brand-600);color:#fff;
    display:flex;align-items:center;justify-content:center;flex:none;
    box-shadow:0 8px 18px -10px rgba(18,99,224,.85);
  }
  .logo-text{font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;line-height:1;}
  .logo-text em{font-style:normal;color:var(--brand-600);}

  .nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;
    padding:0 14px;border-radius:10px;font-size:15px;font-weight:500;
    color:var(--ink-700);transition:color .2s ease-out,background .2s ease-out;
  }
  .nav-link:hover{color:var(--brand-600);background:#F2F6FD;}
  .nav-link.is-active{color:var(--brand-600);font-weight:700;}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;
    background:var(--brand-600);border-radius:2px;
  }
  .header-cta{display:flex;align-items:center;gap:12px;flex:none;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);font-size:15px;font-weight:600;
    padding:12px 22px;border:1px solid transparent;cursor:pointer;
    text-decoration:none;transition:background .22s ease-out,color .22s ease-out,
      transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
    line-height:1.4;
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px -16px rgba(18,99,224,.9);}
  .btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px -14px rgba(18,99,224,.85);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-ghost{background:#fff;border-color:#C9D7EA;color:var(--ink-900);}
  .btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
  .btn[disabled]{opacity:.5;pointer-events:none;}

  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
  .link-arrow svg{transition:transform .22s ease-out;}
  .link-arrow:hover svg{transform:translateX(4px);}

  /* ---------- 面包屑 ---------- */
  .crumb{padding-top:22px;}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);}
  .crumb li{display:flex;align-items:center;gap:8px;}
  .crumb li+li::before{content:"/";color:#B9C6D8;}
  .crumb a{color:var(--ink-500);}
  .crumb a:hover{color:var(--brand-600);}
  .crumb [aria-current="page"]{color:var(--ink-900);font-weight:600;}

  /* ---------- 页头 ---------- */
  .page-head{padding:26px 0 8px;}
  .page-head-inner{max-width:880px;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
    padding:5px 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
  }
  .badge-neutral{background:#EEF2F8;color:var(--ink-700);}
  .badge-accent{background:#FFF1E6;color:#C7520C;}
  .page-title{
    margin-top:16px;
    font-size:clamp(30px,4.4vw,44px);
    line-height:1.2;
    font-weight:800;
    letter-spacing:-.02em;
    color:var(--ink-900);
  }
  .page-lead{margin-top:16px;font-size:17px;line-height:1.85;color:var(--ink-700);}
  .head-stats{
    display:flex;flex-wrap:wrap;align-items:center;gap:0 26px;
    margin-top:26px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .head-stats .stat{display:flex;align-items:baseline;gap:8px;}
  .head-stats .stat b{
    font-size:26px;font-weight:800;color:var(--ink-900);
    font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  }
  .head-stats .stat span{font-size:13.5px;color:var(--ink-500);}
  .head-stats .sep{width:1px;height:22px;background:var(--line);}

  /* ---------- 锚点布局 ---------- */
  .anchor-layout{
    display:grid;grid-template-columns:212px minmax(0,1fr);
    gap:48px;padding:56px 0 0;align-items:start;
  }
  .anchor-nav{position:sticky;top:96px;}
  .anchor-nav h2{
    font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--ink-500);
    text-transform:uppercase;margin-bottom:12px;padding-left:12px;
  }
  .anchor-nav a{
    display:block;padding:11px 12px;font-size:14px;color:var(--ink-500);
    border-left:2px solid var(--line);transition:all .2s ease-out;line-height:1.5;
  }
  .anchor-nav a:hover{color:var(--brand-600);border-left-color:var(--brand-600);}
  .anchor-nav a.is-current{
    color:var(--brand-700);border-left-color:var(--brand-600);
    font-weight:700;background:var(--brand-100);border-radius:0 10px 10px 0;
  }

  /* ---------- 内容分节 ---------- */
  .section{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:34px;margin-bottom:24px;scroll-margin-top:96px;
    box-shadow:var(--shadow-card);
  }
  .section h2{
    font-size:clamp(22px,2.6vw,28px);line-height:1.3;font-weight:700;color:var(--ink-900);
    letter-spacing:-.01em;display:flex;align-items:center;gap:12px;
  }
  .section h2::before{
    content:"";width:4px;height:22px;border-radius:3px;background:var(--brand-600);flex:none;
  }
  .section h3{
    font-size:18px;font-weight:700;line-height:1.45;color:var(--ink-900);
    margin-top:28px;margin-bottom:10px;
  }
  .section p{margin-top:14px;line-height:1.9;}
  .section p.lead-in{margin-top:16px;color:var(--ink-700);}

  .bullet-list{margin-top:16px;display:grid;gap:12px;}
  .bullet-list li{position:relative;padding-left:22px;line-height:1.8;}
  .bullet-list li::before{
    content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;
    background:var(--brand-600);
  }
  .num-list{margin-top:18px;display:grid;gap:14px;counter-reset:step;}
  .num-list li{
    position:relative;padding-left:44px;line-height:1.8;counter-increment:step;
  }
  .num-list li::before{
    content:counter(step,decimal-leading-zero);
    position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:9px;
    background:var(--brand-100);color:var(--brand-700);
    font-size:13px;font-weight:800;font-variant-numeric:tabular-nums;
    display:flex;align-items:center;justify-content:center;
  }
  .num-list li strong{color:var(--ink-900);}

  .inline-figure{margin-top:24px;border-radius:14px;overflow:hidden;border:1px solid var(--line);}
  .inline-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .inline-figure figcaption{
    font-size:12.5px;color:var(--ink-500);text-align:center;padding:12px 16px;background:#FAFCFF;
  }

  /* ---------- 对比表 ---------- */
  .table-block{margin-top:26px;}
  .table-scroll{
    overflow-x:auto;border:1px solid var(--line);border-radius:14px;
    -webkit-overflow-scrolling:touch;
  }
  table.cmp{width:100%;border-collapse:collapse;min-width:720px;font-size:14.5px;}
  table.cmp caption{
    caption-side:top;text-align:left;font-size:13px;color:var(--ink-500);
    padding:0 0 10px;
  }
  .cmp thead th{
    background:var(--brand-100);color:var(--brand-700);text-align:left;
    padding:14px 16px;font-weight:700;white-space:nowrap;font-size:14px;
  }
  .cmp tbody td{padding:15px 16px;border-top:1px solid var(--line);color:var(--ink-700);vertical-align:top;}
  .cmp tbody tr{transition:background .18s ease-out;}
  .cmp tbody tr:hover{background:#F7FAFF;}
  .cmp tbody td:first-child{font-weight:700;color:var(--ink-900);white-space:nowrap;}
  .table-note{margin-top:12px;font-size:13.5px;color:var(--ink-500);}

  /* ---------- 卡点块 ---------- */
  .trouble-grid{margin-top:22px;display:grid;gap:14px;}
  .trouble-item{
    display:flex;gap:14px;padding:18px 20px;border:1px solid var(--line);
    border-radius:14px;background:#FAFCFF;
  }
  .trouble-item .ico{
    width:34px;height:34px;border-radius:10px;flex:none;
    background:#E9F6F4;color:#0E8C80;display:flex;align-items:center;justify-content:center;
  }
  .trouble-item h4{font-size:15.5px;font-weight:700;color:var(--ink-900);margin-bottom:4px;}
  .trouble-item p{font-size:14.5px;color:var(--ink-700);line-height:1.75;margin:0;}

  /* ---------- 手风琴 ---------- */
  .accordion{margin-top:20px;border-top:1px solid var(--line);}
  .accordion details{border-bottom:1px solid var(--line);}
  .accordion summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:56px;padding:14px 0;font-size:16px;font-weight:600;color:var(--ink-900);
    transition:color .2s ease-out;
  }
  .accordion summary::-webkit-details-marker{display:none;}
  .accordion summary:hover{color:var(--brand-600);}
  .accordion summary .sign{
    width:24px;height:24px;flex:none;position:relative;border-radius:50%;
    background:var(--brand-100);color:var(--brand-700);
  }
  .accordion summary .sign::before,
  .accordion summary .sign::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
    transform:translate(-50%,-50%);transition:transform .22s ease-out,opacity .22s ease-out;
  }
  .accordion summary .sign::before{width:11px;height:1.8px;}
  .accordion summary .sign::after{width:1.8px;height:11px;}
  .accordion details[open] summary .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .accordion .panel{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-700);}

  /* ---------- 误区清单 ---------- */
  .myth-block{padding:56px 0 0;}
  .myth-head{max-width:720px;}
  .myth-head h2{
    font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink-900);line-height:1.3;
    letter-spacing:-.01em;
  }
  .myth-head p{margin-top:12px;color:var(--ink-500);font-size:15px;}
  .myth-list{margin-top:26px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .myth-item{
    display:flex;gap:14px;padding:20px;border-radius:14px;
    background:#FFF8F3;border:1px solid #FFE3D0;
  }
  .myth-item .mark{
    width:26px;height:26px;flex:none;border-radius:8px;background:var(--accent-500);color:#fff;
    display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;
  }
  .myth-item h3{font-size:15.5px;font-weight:700;color:var(--ink-900);line-height:1.5;margin-bottom:4px;}
  .myth-item p{font-size:14.5px;color:var(--ink-700);line-height:1.75;margin:0;}

  /* ---------- CTA ---------- */
  .cta-block{padding:64px 0 0;}
  .cta-card{
    max-width:1080px;margin:0 auto;background:var(--brand-100);border-radius:20px;
    padding:48px 40px;display:grid;grid-template-columns:minmax(0,1fr) auto;
    gap:32px;align-items:center;
  }
  .cta-card h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--ink-900);line-height:1.3;letter-spacing:-.01em;}
  .cta-card p{margin-top:12px;color:var(--ink-700);max-width:560px;font-size:15.5px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--deep);color:rgba(255,255,255,.72);margin-top:80px;padding:64px 0 0;}
  .site-footer .logo-text{color:#fff;}
  .site-footer .logo-text em{color:#8FBBFF;}
  .site-footer .logo-mark{background:rgba(255,255,255,.12);box-shadow:none;}
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
    padding-bottom:44px;
  }
  .footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:360px;}
  .footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col a{font-size:14.5px;color:rgba(255,255,255,.7);transition:color .2s ease-out;}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ---------- 移动底部 Tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;
    background:#fff;border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -8px 26px -20px rgba(14,26,43,.5);
  }
  .mobile-tab a{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    height:60px;font-size:11px;color:var(--ink-500);text-decoration:none;
    transition:color .2s ease-out;
  }
  .mobile-tab a .tab-ico{
    width:40px;height:24px;border-radius:999px;display:flex;align-items:center;justify-content:center;
    transition:background .2s ease-out;
  }
  .mobile-tab a.is-active{color:var(--brand-600);font-weight:600;}
  .mobile-tab a.is-active .tab-ico{background:var(--brand-100);}
  .mobile-tab a:active{color:var(--brand-700);}

  /* ---------- 桌面底部转化条 ---------- */
  .desk-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:75;display:none;
    background:var(--deep);color:#fff;
    transform:translateY(130%);transition:transform .3s ease-out;
    box-shadow:0 -14px 34px -24px rgba(11,27,51,.9);
  }
  .desk-bar.is-show{transform:translateY(0);}
  .desk-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
  .desk-bar-inner p{font-size:14.5px;color:rgba(255,255,255,.86);}
  .desk-bar-actions{display:flex;align-items:center;gap:10px;}
  .desk-bar-close{
    width:34px;height:34px;border-radius:9px;border:1px solid rgba(255,255,255,.24);
    background:transparent;color:rgba(255,255,255,.7);cursor:pointer;font-size:16px;line-height:1;
    display:flex;align-items:center;justify-content:center;transition:all .2s ease-out;
  }
  .desk-bar-close:hover{background:rgba(255,255,255,.12);color:#fff;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .nav-link{padding:0 10px;font-size:14.5px;}
  }
  @media (max-width:1023px){
    .nav-menu{display:none;}
    .header-cta{display:none;}
    .header-inner{height:64px;}
    .site-header.is-scrolled .header-inner{height:64px;}
    body{padding-bottom:78px;}
    .mobile-tab{display:grid;grid-template-columns:repeat(4,1fr);}
    .desk-bar{display:none !important;}
    .anchor-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:36px;}
    .anchor-nav{position:static;}
    .anchor-nav h2{padding-left:0;margin-bottom:10px;}
    .anchor-nav-inner{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin;}
    .anchor-nav a{
      white-space:nowrap;border-left:0;border:1px solid var(--line);
      border-radius:999px;padding:8px 14px;font-size:13.5px;
    }
    .anchor-nav a.is-current{background:var(--brand-100);border-color:var(--brand-600);border-radius:999px;}
    .myth-list{grid-template-columns:minmax(0,1fr);}
    .cta-card{grid-template-columns:minmax(0,1fr);padding:36px 26px;gap:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .footer-brand{grid-column:1 / -1;}
    .site-footer{margin-top:56px;padding-top:48px;}
  }
  @media (max-width:767px){
    .wrap{padding:0 20px;}
    .section{padding:24px 20px;border-radius:14px;}
    .page-head{padding-top:20px;}
    .page-lead{font-size:15.5px;}
    .head-stats{gap:14px 20px;}
    .head-stats .sep{display:none;}
    .head-stats .stat b{font-size:22px;}
    .myth-block{padding-top:44px;}
    .cta-block{padding-top:48px;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;}
  }
  @media (max-width:520px){
    .page-title{font-size:27px;}
    .section h2{font-size:20px;}
    .btn{width:100%;}
    .head-stats{flex-direction:column;align-items:flex-start;}
  }