/* roulang page: index */
:root{
  --c-primary:#1A56DB;
  --c-primary-dark:#123FA8;
  --c-primary-soft:#E8F0FE;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#12A594;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E2E8F2;
  --c-text:#16233A;
  --c-text-2:#5A6B85;
  --c-text-3:#8A9AB5;
  --c-error:#E5484D;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --r-card:18px;
  --r-strip:20px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,45,90,.05),0 4px 12px rgba(20,45,90,.05);
  --sh-2:0 10px 30px rgba(20,45,90,.09);
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.02em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--c-primary-soft);color:var(--c-primary-dark);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--soft{background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);}

/* ============ 头部导航 ============ */
.site-header{
  position:absolute;top:24px;left:0;right:0;z-index:120;
  display:flex;justify-content:center;padding:0 24px;
  transition:top .3s ease;
}
.nav-shell{
  width:min(1140px,100%);
  height:64px;
  display:flex;align-items:center;gap:14px;
  padding:0 12px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-fixed{position:fixed;top:12px;}
.site-header.is-fixed .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--sh-2);}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px;}
.logo-mark{
  width:24px;height:24px;flex:0 0 auto;
  border-radius:50%;
  border:2.5px solid var(--c-primary);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;right:-3px;top:8px;
  width:10px;height:10px;background:#fff;
  border-left:2.5px solid var(--c-primary);
  border-radius:2px;
}
.logo-text{font-size:18px;font-weight:700;color:var(--c-text);letter-spacing:-0.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;min-height:44px;
  font-size:15px;color:var(--c-text-2);
  border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.nav-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:8px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;background:transparent;border-radius:var(--r-pill);
  color:var(--c-text-2);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-line);}
.icon-btn svg{width:19px;height:19px;}

/* 搜索面板 */
.search-panel{
  position:absolute;top:76px;right:calc((100% - min(1140px,100%)) / 2);
  width:min(420px,calc(100% - 48px));
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:16px;
  display:none;
}
.search-panel.is-open{display:block;}
.search-panel form{display:flex;gap:8px;}

/* 汉堡 */
.hamburger{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:var(--r-pill);cursor:pointer;}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;transition:.25s ease;}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:.25s ease;}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.hamburger.is-open span{background:transparent;}
.hamburger.is-open span::before{top:0;transform:rotate(45deg);}
.hamburger.is-open span::after{top:0;transform:rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:110;background:rgba(22,35,58,.35);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer.is-open{opacity:1;pointer-events:auto;}
.drawer-inner{
  position:absolute;top:0;left:0;right:0;
  background:#fff;border-radius:0 0 24px 24px;
  padding:88px 18px 24px;
  transform:translateY(-16px);
  transition:transform .28s ease;
  box-shadow:var(--sh-2);
}
.drawer.is-open .drawer-inner{transform:translateY(0);}
.drawer-inner a{
  display:flex;align-items:center;height:48px;padding:0 14px;
  border-radius:var(--r-btn);font-size:16px;color:var(--c-text-2);
}
.drawer-inner a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer-inner .drawer-cta{margin-top:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  min-height:46px;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#E96A0C;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn.is-loading{position:relative;color:transparent;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;}
.link-arrow svg{width:14px;height:14px;transition:transform .25s ease;}
.link-arrow:hover svg{transform:translateX(2px);}

/* ============ 徽章 / 胶囊 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.5;
  background:var(--c-primary-soft);color:var(--c-primary);
  white-space:nowrap;
}
.pill-accent{background:var(--c-accent-soft);color:#C85A08;}
.pill-line{background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-2);
  box-shadow:var(--sh-1);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c-success);flex:0 0 auto;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:168px 0 88px;
  background:
    radial-gradient(circle at 82% 12%,rgba(26,86,219,.07) 0,transparent 46%),
    linear-gradient(140deg,#FFFFFF 0%,#F3F7FE 58%,#EEF4FE 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(26,86,219,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.22;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:56fr 44fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:13px;color:var(--c-primary);font-weight:600;
  box-shadow:var(--sh-1);
}
.hero h1{
  margin-top:20px;
  font-size:40px;line-height:1.28;
  letter-spacing:-0.02em;
}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-sub{
  margin-top:16px;font-size:18px;color:var(--c-text-2);max-width:520px;
}
.hero-cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap;}
.hero-stats{
  margin-top:40px;display:flex;align-items:stretch;gap:0;
  border-top:1px solid var(--c-line);padding-top:24px;
}
.hero-stats .stat{
  flex:1;padding-right:24px;margin-right:24px;border-right:1px solid var(--c-line);
}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.stat-num{font-size:28px;font-weight:700;color:var(--c-text);line-height:1.2;}
.stat-num small{font-size:14px;font-weight:600;color:var(--c-primary);margin-left:2px;}
.stat-label{margin-top:4px;font-size:12px;color:var(--c-text-3);}

.hero-visual{position:relative;padding-bottom:56px;}
.hv-main{
  border-radius:var(--r-strip);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/10;background:var(--c-primary-soft);
}
.hv-main img{width:100%;height:100%;object-fit:cover;}
.hv-sub{
  position:absolute;left:-16px;bottom:0;width:240px;
  border-radius:16px;overflow:hidden;
  border:4px solid #fff;box-shadow:var(--sh-2);
  aspect-ratio:4/3;background:#fff;
}
.hv-sub img{width:100%;height:100%;object-fit:cover;}
.hv-tip{
  position:absolute;right:0;top:18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:8px 14px;font-size:13px;color:var(--c-text-2);
  box-shadow:var(--sh-1);display:flex;align-items:center;gap:8px;
}

/* ============ 通用标题 ============ */
.sec-head{max-width:720px;margin-bottom:32px;}
.sec-head h2{font-size:28px;margin-top:12px;}
.sec-head p{margin-top:12px;color:var(--c-text-2);font-size:16px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-accent);letter-spacing:.04em;
}
.sec-kicker::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-accent);}

/* ============ 理念区 ============ */
.story-grid{display:grid;grid-template-columns:46fr 54fr;gap:56px;align-items:center;}
.story-media{
  border-radius:var(--r-strip);overflow:hidden;box-shadow:var(--sh-1);
  aspect-ratio:4/3;background:var(--c-primary-soft);
}
.story-media img{width:100%;height:100%;object-fit:cover;}
.story-text h2{font-size:28px;margin-bottom:16px;}
.story-text p{color:var(--c-text-2);margin-bottom:14px;}
.story-points{margin-top:24px;display:grid;gap:14px;}
.story-points li{display:flex;gap:14px;align-items:flex-start;}
.story-points .idx{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  margin-top:3px;
}
.story-points strong{display:block;font-size:15px;font-weight:600;color:var(--c-text);}
.story-points span{font-size:14px;color:var(--c-text-2);}

/* ============ 精选卡 ============ */
.pick-grid{
  display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;
}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary-soft);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .pill{position:absolute;left:14px;top:14px;background:#fff;color:var(--c-accent);box-shadow:var(--sh-1);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{font-size:15px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-3);border-top:1px solid var(--c-line);}
.pick-main{grid-row:span 2;}
.pick-main .card-media{aspect-ratio:16/10;}
.pick-main .card-body h3{font-size:20px;}
.pick-side .card-media{aspect-ratio:16/9;}

/* ============ 信任条带 ============ */
.trust-band{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.trust-band::-webkit-scrollbar{height:6px;}
.trust-band::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px;}
.trust-item{
  flex:1 0 200px;min-width:200px;
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  padding:20px;display:flex;align-items:center;gap:14px;
  box-shadow:var(--sh-1);
}
.trust-ico{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.trust-ico svg{width:20px;height:20px;}
.trust-item strong{display:block;font-size:14px;font-weight:600;}
.trust-item span{font-size:12px;color:var(--c-text-3);}
.trust-mask{position:relative;}
.trust-mask::after{
  content:"";position:absolute;top:0;right:0;bottom:6px;width:64px;
  background:linear-gradient(90deg,rgba(245,248,252,0),var(--c-bg));
  pointer-events:none;
}

/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;}
.news-list{border-top:1px solid var(--c-line);}
.news-row{border-bottom:1px solid var(--c-line);}
.news-link{
  display:grid;grid-template-columns:96px 1fr auto;gap:24px;align-items:center;
  padding:20px 16px;border-radius:12px;
  transition:background .2s ease;
}
.news-link:hover{background:#F9FBFE;}
.news-date{display:flex;flex-direction:column;align-items:flex-start;line-height:1.1;}
.news-day{font-size:22px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.news-ym{font-size:12px;color:var(--c-text-3);margin-top:4px;}
.news-body{min-width:0;}
.news-title{
  display:block;font-size:17px;font-weight:600;color:var(--c-text);line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-link:hover .news-title{color:var(--c-primary);}
.news-sum{
  display:block;margin-top:6px;font-size:14px;color:var(--c-text-2);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-meta{display:flex;align-items:center;gap:14px;}
.news-arrow{
  width:32px;height:32px;border-radius:50%;flex:0 0 auto;
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;
  color:var(--c-text-3);transition:.25s ease;
}
.news-arrow svg{width:14px;height:14px;}
.news-link:hover .news-arrow{background:var(--c-primary);border-color:var(--c-primary);color:#fff;transform:translateX(2px);}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state svg{width:40px;height:40px;color:var(--c-text-3);margin:0 auto 16px;}
.empty-state p{color:var(--c-text-2);margin-bottom:18px;}

/* ============ 上手流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh-1);position:relative;
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary-soft);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--c-accent-soft);color:#C85A08;
  font-size:15px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--c-text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.is-open{border-color:var(--c-primary-soft);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-text);min-height:44px;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;position:relative;
  transition:transform .24s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:opacity .24s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a p{
  padding:0 24px 22px;font-size:16px;line-height:1.8;color:var(--c-text-2);
}

/* ============ CTA 条带 ============ */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary-soft) 0%,#F4F8FF 62%,var(--c-accent-soft) 100%);
  border:1px solid var(--c-line);
  border-radius:var(--r-strip);
  padding:40px 40px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  border-radius:50%;border:24px solid rgba(26,86,219,.06);
}
.cta-band h2{font-size:24px;position:relative;}
.cta-band p{margin-top:8px;font-size:15px;color:var(--c-text-2);position:relative;}
.cta-form{display:flex;gap:12px;position:relative;}
.field{
  height:48px;min-width:260px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:var(--c-text-3);}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-soft);}
.field.is-error{border-color:var(--c-error);}
.form-note{margin-top:12px;font-size:13px;color:var(--c-text-3);position:relative;}
.form-msg{margin-top:8px;font-size:13px;color:var(--c-success);display:none;}
.form-msg.is-show{display:block;}
.form-msg.is-error{color:var(--c-error);}

/* ============ 页脚 ============ */
.site-footer{background:#0F1E3D;color:#A9BBD8;margin-top:88px;}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{border-color:#5B8DF6;}
.footer-brand .logo-mark::after{background:#0F1E3D;border-left-color:#5B8DF6;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:280px;}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#A9BBD8;position:relative;padding-bottom:2px;transition:color .2s ease;}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width .22s ease;
}
.footer-col a:hover{color:#fff;}
.footer-col a:hover::after{width:18px;}
.footer-sub p{font-size:14px;line-height:1.8;margin-bottom:16px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:#8A9AB5;
}
.footer-bottom a{color:#A9BBD8;}
.footer-bottom a:hover{color:#fff;}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:96%;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-actions .btn{display:none;}
  .hamburger{display:inline-flex;}
  .hero{padding:148px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .hero h1{font-size:32px;}
  .hero-visual{order:2;max-width:620px;width:100%;}
  .story-grid{grid-template-columns:1fr;gap:32px;}
  .pick-grid{grid-template-columns:1fr;}
  .pick-main{grid-row:auto;}
  .steps{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:32px 24px;}
  .cta-form{flex-wrap:wrap;}
  .field{min-width:0;flex:1 1 220px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .container{padding:0 18px;}
  .site-header{padding:0 14px;top:14px;}
  .nav-shell{height:58px;padding:0 8px 0 14px;}
  .logo-text{font-size:16px;}
  .hero{padding:126px 0 56px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .hero-cta .btn{flex:1 1 auto;}
  .hero-stats{flex-wrap:wrap;gap:20px 0;}
  .hero-stats .stat{flex:1 1 40%;border-right:0;margin-right:0;padding-right:0;}
  .hv-sub{width:170px;border-width:3px;left:0;}
  .hero-visual{padding-bottom:40px;}
  .news-link{grid-template-columns:64px 1fr;gap:14px;padding:18px 8px;}
  .news-meta{grid-column:2;justify-content:flex-start;margin-top:4px;}
  .news-day{font-size:20px;}
  .news-title,.news-sum{white-space:normal;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;}
  .news-title{-webkit-line-clamp:2;}
  .news-sum{-webkit-line-clamp:2;}
  .news-head{flex-direction:column;align-items:flex-start;}
  .card-body{padding:20px;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sec-head h2,.story-text h2{font-size:22px;}
}
@media (max-width:480px){
  .hero h1{font-size:24px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .cta-band h2{font-size:20px;}
  .cta-form .btn{width:100%;}
  .field{flex:1 1 100%;}
  .trust-item{flex:0 0 84%;}
  .stat-num{font-size:24px;}
}

/* roulang page: category1 */
:root{
  --brand:#1A56DB;
  --brand-dark:#123FA8;
  --brand-soft:#E8F0FE;
  --accent:#FF7A1A;
  --accent-soft:#FFF1E4;
  --ok:#12A594;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#E2E8F2;
  --text:#16233A;
  --muted:#5A6B85;
  --weak:#8A9AB5;
  --danger:#E5484D;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,45,90,.05),0 4px 12px rgba(20,45,90,.05);
  --shadow-2:0 10px 30px rgba(20,45,90,.09);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans 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-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:min(1200px,100% - 48px);margin-inline:auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;letter-spacing:0;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(20,45,90,.12)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14.5px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-dark);font-weight:600;font-size:15px}
.btn-text::after{content:"→";transition:transform .2s ease}
.btn-text:hover::after{transform:translateX(2px)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}

/* 导航 */
.site-header{position:absolute;top:24px;left:0;right:0;z-index:60;transition:top .25s ease}
.site-header.is-scrolled{position:fixed;top:12px}
.nav-shell{
  width:min(1140px,92%);margin-inline:auto;height:64px;
  display:flex;align-items:center;gap:16px;padding:0 18px;
  border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:var(--shadow-1);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--shadow-2)}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:24px;height:24px;flex:none;border-radius:50%;
  background:conic-gradient(from 20deg,var(--brand) 0 76%,transparent 76% 100%);
  -webkit-mask:radial-gradient(circle,transparent 0 40%,#000 41% 100%);
  mask:radial-gradient(circle,transparent 0 40%,#000 41% 100%);
}
.logo-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:10px 14px;border-radius:999px;font-size:15px;color:var(--muted);transition:background .2s ease,color .2s ease}
.nav-link:hover{background:var(--brand-soft);color:var(--brand)}
.nav-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:6px;width:4px;height:4px;border-radius:50%;background:var(--brand);transform:translateX(-50%)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.icon-btn{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:var(--muted);transition:background .2s ease,color .2s ease}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand)}
.icon-btn svg{width:20px;height:20px}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:background .2s ease}
.menu-toggle:hover{background:var(--brand-soft)}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(16,30,58,.4);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86%);z-index:80;
  background:#fff;box-shadow:-10px 0 30px rgba(20,45,90,.14);
  transform:translateX(100%);transition:transform .28s ease;
  padding:22px 20px 28px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:10px}
.drawer-link{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;color:var(--muted);font-size:15.5px;transition:background .2s ease,color .2s ease}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.drawer .btn{margin-top:16px;width:100%}
body.no-scroll{overflow:hidden}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;
  padding:140px 0 76px;
  background-image:linear-gradient(rgba(255,255,255,.86),rgba(245,248,252,.95)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(26,86,219,.10) 1px,transparent 1px);
  background-size:14px 14px;opacity:.5;
}
.hero-inner{position:relative;z-index:2;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:999px;background:var(--accent-soft);
  color:#B4520A;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok)}
.page-hero h1{margin-top:18px;font-size:32px;line-height:1.32}
.hero-lead{margin-top:16px;font-size:17px;color:var(--muted);max-width:520px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}

/* 频道导览条 */
.channel-bar{background:#fff;border-bottom:1px solid var(--line)}
.channel-nav{display:flex;gap:10px;padding:16px 0;overflow-x:auto;scrollbar-width:thin}
.channel-nav::-webkit-scrollbar{height:6px}
.channel-nav::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.chip{
  flex:none;display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--muted);font-size:14.5px;transition:all .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* 板块通用 */
.section{padding:88px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:28px}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* 速览指标 */
.metrics{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:20px}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.metric:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-soft)}
.metric-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2}
.metric-num em{font-style:normal;font-size:15px;color:var(--muted);font-weight:600;margin-left:6px}
.metric-label{margin-top:8px;font-size:16px;font-weight:600}
.metric-desc{margin-top:8px;font-size:14.5px;color:var(--muted)}

/* 图文区块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-card);transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{font-size:26px}
.split-body .lead{margin-top:16px;color:var(--muted);font-size:16px}
.num-list{margin-top:26px;display:flex;flex-direction:column;gap:18px}
.num-item{display:flex;gap:14px;align-items:flex-start}
.num-dot{
  flex:none;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;margin-top:3px;
}
.num-item h3{font-size:17px;font-weight:600}
.num-item p{margin-top:6px;font-size:15px;color:var(--muted)}

/* FAQ */
.faq-wrap{max-width:860px;margin-inline:auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:0 22px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFDCF2}
.faq-item.open{border-color:var(--brand-soft);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text);
}
.faq-icon{position:relative;flex:none;width:20px;height:20px;transition:transform .24s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity .24s ease}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:0 0 22px;font-size:16px;line-height:1.8;color:var(--muted)}

/* 关联入口卡 */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.link-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-soft)}
.link-card .lc-icon{
  flex:none;width:42px;height:42px;border-radius:12px;background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);
}
.link-card .lc-icon svg{width:20px;height:20px}
.link-card h3{font-size:16.5px;font-weight:600}
.link-card p{margin-top:4px;font-size:14px;color:var(--muted)}
.link-card .lc-arrow{margin-left:auto;color:var(--brand);transition:transform .2s ease}
.link-card:hover .lc-arrow{transform:translateX(3px)}

/* 底部 CTA */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;padding:44px;background:var(--brand-soft);
  display:flex;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  border:1px solid rgba(26,86,219,.16);
  box-shadow:0 0 0 28px rgba(26,86,219,.05);
}
.cta-copy{position:relative;z-index:2;max-width:560px}
.cta-copy h2{font-size:24px}
.cta-copy p{margin-top:10px;color:var(--muted);font-size:15.5px}
.cta-actions{position:relative;z-index:2;margin-left:auto;display:flex;gap:12px;flex-wrap:wrap}
.cta-note{position:relative;z-index:2;width:100%;font-size:13px;color:var(--weak)}

/* 页脚 */
.site-footer{background:#101E3A;color:#C6D3E8;margin-top:88px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 40px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14.5px;color:#9DB0CE;max-width:300px;line-height:1.8}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:#9DB0CE;padding-bottom:2px;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-col a:hover{color:#fff;border-bottom-color:var(--accent)}
.footer-sub p{font-size:14.5px;color:#9DB0CE;line-height:1.8;margin-bottom:16px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  font-size:13.5px;color:#8A9AB5;
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{color:#8A9AB5;font-size:13.5px}
.footer-links a:hover{color:#fff}

/* 状态演示 */
.is-loading{position:relative;color:transparent!important;pointer-events:none}
.is-loading::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* 响应式 */
@media (max-width:1279px){
  .container{width:min(1200px,96%)}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .menu-toggle{display:flex}
  .nav-actions .btn{display:none}
  .section{padding:72px 0}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .metrics{grid-template-columns:1fr 1fr}
  .link-cards{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .cta-actions{margin-left:0}
}
@media (max-width:767px){
  .container{width:min(1200px,100% - 36px)}
  .page-hero{padding:118px 0 56px}
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .section{padding:56px 0}
  .section-head h2{font-size:22px}
  .split-body h2{font-size:22px}
  .metrics{grid-template-columns:1fr}
  .link-cards{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .cta-copy h2{font-size:21px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .split-media img{aspect-ratio:16/10}
}
@media (max-width:480px){
  .page-hero{padding:110px 0 48px}
  .page-hero h1{font-size:24px}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-item{padding:0 16px}
  .faq-q{font-size:16px}
  .nav-shell{padding:0 12px}
}

/* roulang page: article */
:root{
  --c-primary:#1A56DB;
  --c-primary-dark:#123FA8;
  --c-primary-soft:#E8F0FE;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-ok:#12A594;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E2E8F2;
  --c-text:#16233A;
  --c-text-2:#5A6B85;
  --c-text-3:#8A9AB5;
  --c-danger:#E5484D;
  --r-card:18px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(20,45,90,.05),0 4px 12px rgba(20,45,90,.05);
  --sh-2:0 10px 30px rgba(20,45,90,.09);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit}
input{font-family:inherit}
time,.num{font-variant-numeric:tabular-nums}
::selection{background:var(--c-primary-soft);color:var(--c-primary-dark)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EEF3FA}
::-webkit-scrollbar-thumb{background:#C6D4EA;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:var(--c-primary)}
.container{width:min(1200px,100% - 48px);margin:0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(20,45,90,.12)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:rgba(26,86,219,.35);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:var(--c-primary)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:14.5px;
  transition:color .2s ease;
}
.btn-text svg{transition:transform .22s ease}
.btn-text:hover{color:var(--c-primary-dark)}
.btn-text:hover svg{transform:translateX(2px)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-soft);color:#C2570B}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);
  transition:all .2s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--c-ok);display:inline-block}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:18px 0 0}
.nav-shell{
  position:relative;
  width:min(1140px,92%);margin:0 auto;
  display:flex;align-items:center;gap:18px;
  height:64px;padding:0 18px;border-radius:999px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-stuck .nav-shell{background:rgba(255,255,255,.96);box-shadow:var(--sh-2)}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--c-text)}
.logo-mark{
  position:relative;width:24px;height:24px;border-radius:50%;
  border:3px solid var(--c-primary);flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;top:-5px;right:-3px;width:11px;height:11px;
  border-radius:50%;background:#fff;
}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:999px;
  font-size:14.5px;color:var(--c-text-2);transition:all .2s ease;
}
.nav-link:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;bottom:7px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid transparent;color:var(--c-text-2);
  cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:all .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:all .25s ease}
.nav-toggle[aria-expanded="true"]{background:var(--c-primary-soft);border-color:rgba(26,86,219,.3)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  display:none;position:absolute;left:0;right:0;top:74px;z-index:90;
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  box-shadow:var(--sh-2);padding:12px;
}
.nav-drawer.is-open{display:block;animation:drawerIn .22s ease}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.drawer-menu{display:flex;flex-direction:column;gap:4px}
.drawer-menu a{
  display:flex;align-items:center;height:48px;padding:0 16px;
  border-radius:12px;font-size:15px;color:var(--c-text-2);
  transition:all .2s ease;
}
.drawer-menu a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-menu .btn{margin-top:8px;color:#fff;justify-content:center}
.drawer-menu .btn:hover{background:var(--c-primary-dark);color:#fff}

/* ---------- 页面头部 / 面包屑 ---------- */
.page-head{
  position:relative;
  padding:30px 0 10px;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center 30%;
}
.page-head::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.88)}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .bc-sep{color:#C3CFE2}
.breadcrumb .bc-current{
  color:var(--c-text);max-width:44ch;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 300px;
  gap:56px;
  justify-content:center;
  align-items:start;
  padding:40px 0 0;
}
.article-main{min-width:0}

/* ---------- 文章头部 ---------- */
.article-head{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:32px 34px 28px;
}
.head-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.article-head h1{
  font-size:clamp(24px,3vw,32px);
  line-height:1.35;
  letter-spacing:-.02em;
  margin-bottom:20px;
  overflow-wrap:break-word;
}
.head-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap;
  padding-top:18px;border-top:1px solid var(--c-line);
}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--c-text-3)}
.meta-row .sep{color:#C3CFE2}
.meta-row time{color:var(--c-text-2)}
.meta-row .meta-cat{color:var(--c-primary);font-weight:600}
.share-group{display:flex;align-items:center;gap:8px}
.share-btn{
  width:38px;height:38px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);
  cursor:pointer;transition:all .22s ease;
}
.share-btn:hover{background:var(--c-primary);border-color:var(--c-primary);color:#fff;transform:translateY(-1px)}
.share-btn:active{transform:translateY(0)}

/* ---------- 正文 ---------- */
.article-body{
  margin-top:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:40px 44px 48px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:22px;line-height:1.4;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18px;margin:28px 0 12px}
.article-body h4{font-size:16px;margin:22px 0 10px;color:var(--c-text-2)}
.article-body img{border-radius:var(--r-img);margin:24px auto 10px}
.article-body figure{margin:24px 0}
.article-body figure img{margin:0 auto}
.article-body figcaption,
.article-body .caption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);
  border-radius:0 12px 12px 0;
  color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0;line-height:1.8}
.article-body li::marker{color:var(--c-primary)}
.article-body a{
  color:var(--c-primary-dark);
  border-bottom:1px solid rgba(26,86,219,.35);
  transition:border-color .2s ease;
}
.article-body a:hover{border-bottom-color:var(--c-primary-dark)}
.article-body strong{font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body thead th{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.article-body pre{
  background:#0F1B33;color:#DCE6F7;border-radius:12px;
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-size:.92em;background:var(--c-primary-soft);color:var(--c-primary-dark);padding:2px 6px;border-radius:6px}
.article-body pre code{background:none;color:inherit;padding:0}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:64px 24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-top:24px;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:22px}

/* ---------- 文末区 ---------- */
.article-foot{margin-top:32px}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.tag-row .tag-label{font-size:13px;color:var(--c-text-3);margin-right:2px}
.post-nav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;margin-bottom:8px;
}
.post-nav-item{
  display:flex;flex-direction:column;gap:8px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);
  transition:all .24s ease;
}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(26,86,219,.3)}
.pn-label{font-size:12.5px;color:var(--c-text-3);display:flex;align-items:center;gap:6px}
.pn-title{
  font-size:16px;font-weight:600;color:var(--c-text);
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-nav-item:hover .pn-title{color:var(--c-primary)}
.pn-next{align-items:flex-end;text-align:right}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:18px;position:sticky;top:104px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;
}
.side-title{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-primary)}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 12px;border-radius:10px;
  font-size:14.5px;color:var(--c-text-2);transition:all .2s ease;
}
.side-nav a::after{content:"›";color:#C3CFE2;font-size:16px;line-height:1}
.side-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.side-nav a.is-current{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.side-card-cta{
  background:linear-gradient(135deg,var(--c-primary-soft),#fff);
  border-color:rgba(26,86,219,.18);
}
.side-cta-text{font-size:14px;color:var(--c-text-2);line-height:1.7;margin-bottom:14px}
.side-fig{border-radius:var(--r-img);overflow:hidden;margin-bottom:14px}
.side-fig img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:28px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;color:var(--c-primary);
  letter-spacing:.06em;margin-bottom:8px;
}
.sec-head h2{font-size:clamp(22px,3vw,28px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:all .28s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(26,86,219,.3)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:14px;top:14px}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.card-title{
  font-size:18px;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-title{color:var(--c-primary)}
.card-desc{
  font-size:15px;color:var(--c-text-2);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.card-link{font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:5px}
.card-link svg{transition:transform .22s ease}
.card:hover .card-link svg{transform:translateX(2px)}

/* ---------- CTA 条带 ---------- */
.cta{padding:72px 0 88px}
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(26,86,219,.08),rgba(255,122,26,.06));
  border:1px solid rgba(26,86,219,.14);
  border-radius:20px;padding:36px 40px;
}
.cta-copy h2{font-size:22px;margin-bottom:10px}
.cta-copy p{font-size:14.5px;color:var(--c-text-2);max-width:46ch}
.cta-form{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cta-form input{
  width:280px;height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  font-size:15px;outline:none;transition:all .2s ease;
}
.cta-form input::placeholder{color:var(--c-text-3)}
.cta-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,86,219,.14)}
.cta-form input.is-error{border-color:var(--c-danger);box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.cta-form input.is-ok{border-color:var(--c-ok);box-shadow:0 0 0 3px rgba(18,165,148,.14)}
.form-msg{width:100%;font-size:12.5px;color:var(--c-text-3);margin-top:2px}
.form-msg.is-error{color:var(--c-danger)}
.form-msg.is-ok{color:var(--c-ok)}

/* ---------- 页脚 ---------- */
.site-footer{background:#101D38;color:#A9BAD6;padding:64px 0 28px;margin-top:8px}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.25fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-mark{border-color:#fff}
.footer-brand .logo-mark::after{background:#101D38}
.footer-brand p{font-size:14px;line-height:1.8;max-width:30ch}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;color:#A9BAD6;transition:color .2s ease;
  position:relative;padding-bottom:2px;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{
  content:"";position:absolute;left:0;bottom:0;width:16px;height:2px;
  border-radius:2px;background:var(--c-accent);
}
.footer-sub p{font-size:14px;line-height:1.8;margin-bottom:16px}
.footer-sub .btn-primary{background:var(--c-accent);color:#1A1206}
.footer-sub .btn-primary:hover{background:#F06E0F;color:#1A1206}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:#7E92B4;
}
.footer-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.footer-links a{color:#A9BAD6;transition:color .2s ease}
.footer-links a:hover{color:#fff}

/* ---------- 骨架与提示 ---------- */
.skeleton{background:#E9EFF8;border-radius:8px;animation:breathe 1.2s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.5}}
.toast{
  position:fixed;left:50%;bottom:40px;transform:translate(-50%,16px);
  background:#101D38;color:#fff;font-size:14px;padding:12px 22px;
  border-radius:999px;box-shadow:var(--sh-2);opacity:0;pointer-events:none;
  transition:all .28s ease;z-index:200;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{width:min(1200px,100% - 48px)}
  .layout{grid-template-columns:minmax(0,1fr) 290px;gap:40px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-shell{justify-content:space-between}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:32px}
  .side{position:static;flex-direction:row;flex-wrap:wrap;gap:14px}
  .side-card{flex:1 1 240px}
  .side-card-cta{flex:1 1 100%}
  .side .btn-block{flex:1 1 100%}
  .related{padding-top:56px}
  .cta{padding:56px 0 72px}
}
@media (max-width:767px){
  .container{width:min(1200px,100% - 32px)}
  .site-header{padding-top:12px}
  .nav-shell{height:58px;padding:0 14px}
  .nav-cta{display:none}
  .logo{font-size:16px}
  .page-head{padding:20px 0 6px}
  .article-head{padding:24px 20px 22px}
  .article-body{padding:28px 20px 34px;font-size:16px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .pn-next{align-items:flex-start;text-align:left}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-strip{padding:28px 22px}
  .cta-form{width:100%}
  .cta-form input{width:100%}
  .cta-form .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:520px){
  .article-head h1{font-size:24px}
  .head-bottom{flex-direction:column;align-items:flex-start}
  .sec-head{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --brand:#1A56DB;
  --brand-dark:#123FA8;
  --brand-soft:#E8F0FE;
  --accent:#FF7A1A;
  --accent-soft:#FFF1E4;
  --mint:#12A594;
  --page:#F5F8FC;
  --surface:#FFFFFF;
  --line:#E2E8F2;
  --ink:#16233A;
  --ink-2:#5A6B85;
  --ink-3:#8A9AB5;
  --danger:#E5484D;
  --r-card:16px;
  --r-strip:20px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,45,90,.05),0 4px 12px rgba(20,45,90,.05);
  --sh-2:0 10px 30px rgba(20,45,90,.09);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand-dark);text-decoration:none;border-bottom:1px solid rgba(18,63,168,.35);transition:border-color .2s ease,color .2s ease;}
a:hover{border-bottom-color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.02em;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand);color:#fff;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{font-size:28px;}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;border-bottom:1px solid transparent;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);border-bottom-color:transparent;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.btn.is-loading{position:relative;color:transparent;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid transparent;}
.link-more .arw{transition:transform .2s ease;}
.link-more:hover .arw{transform:translateX(3px);}

/* 导航 */
.site-header{position:absolute;top:24px;left:0;right:0;z-index:80;}
.site-header.is-fixed{position:fixed;top:12px;}
.nav-shell{
  width:min(1140px,92%);margin:0 auto;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 20px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:background-color .24s ease,box-shadow .24s ease;
}
.site-header.is-fixed .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--sh-2);}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;border-bottom:none;flex:0 0 auto;}
.logo-mark{
  width:24px;height:24px;border-radius:50%;border:3px solid var(--brand);
  position:relative;flex:0 0 24px;
}
.logo-mark::after{
  content:"";position:absolute;right:-4px;bottom:-2px;width:10px;height:10px;
  border-radius:50%;background:var(--accent);border:2px solid #fff;
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--ink-2);
  border-bottom:none;min-height:44px;display:inline-flex;align-items:center;
  transition:background-color .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand);border-bottom-color:transparent;}
.nav-link.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.icon-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--ink-2);transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}
.icon-btn svg{width:18px;height:18px;}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-btn span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s ease,opacity .24s ease;}
.menu-btn.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-btn.is-open span:nth-child(2){opacity:0;}
.menu-btn.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer{
  display:none;width:min(1140px,92%);margin:12px auto 0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:12px;
}
.drawer.is-open{display:block;}
.drawer a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:var(--r-btn);
  font-size:16px;color:var(--ink-2);border-bottom:none;
}
.drawer a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer a.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.drawer .btn{margin-top:10px;width:100%;}
body.no-scroll{overflow:hidden;}

/* Hero */
.hero{position:relative;padding:158px 0 88px;overflow:hidden;text-align:center;
  background:linear-gradient(135deg,#F7FAFF 0%,#EAF1FD 100%);}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(rgba(255,255,255,.82),rgba(255,255,255,.9)),url(/assets/images/backpic/back-2.png) center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(26,86,219,.55) 1px,transparent 1px);
  background-size:12px 12px;opacity:.06;
}
.hero .container{position:relative;z-index:2;}
.hero-inner{max-width:780px;margin:0 auto;}
.hero h1{font-size:32px;margin-top:20px;}
.hero-lead{margin-top:16px;font-size:18px;color:var(--ink-2);}
.hero-actions{margin-top:28px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}
.metric-pills{margin-top:36px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}
.metric-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.9);border:1px solid var(--line);
  box-shadow:var(--sh-1);font-size:14px;color:var(--ink-2);
}
.metric-pill b{color:var(--brand);font-size:15px;font-weight:700;}
.metric-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);}

/* 频道导览条 */
.channel-bar{
  background:var(--surface);border-bottom:1px solid var(--line);
  padding:16px 0;position:sticky;top:0;z-index:40;
}
.channel-scroll{display:flex;gap:10px;overflow-x:auto;padding:2px 0;-webkit-overflow-scrolling:touch;}
.channel-scroll::-webkit-scrollbar{height:4px;}
.channel-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  font-size:14px;font-weight:500;text-decoration:none;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}
.chip.is-current{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600;}
.chip.is-current:hover{background:var(--brand-dark);color:#fff;border-color:var(--brand-dark);}

/* 双列不等宽卡片 */
.duo-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--brand-soft);}
.card-media{border-radius:var(--r-img);overflow:hidden;margin:-24px -24px 20px;border-radius:var(--r-card) var(--r-card) 0 0;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .32s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--ink-2);font-size:15px;}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  background:var(--accent-soft);color:#B4540A;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-soft{background:var(--brand-soft);color:var(--brand-dark);}
.card-list{margin-top:16px;display:grid;gap:10px;}
.card-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.card-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);margin-top:9px;
}
.duo-col{display:grid;gap:24px;}

/* 时间轴 */
.timeline{position:relative;padding-left:30px;max-width:860px;}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,var(--line) 100%);
}
.tl-item{position:relative;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:6px;width:14px;height:14px;
  border-radius:50%;background:#fff;border:3px solid var(--brand);
}
.tl-item h3{font-size:18px;margin-bottom:6px;}
.tl-item p{color:var(--ink-2);font-size:15px;max-width:640px;}
.tl-meta{display:inline-flex;align-items:center;gap:8px;margin-bottom:8px;font-size:12px;color:var(--ink-3);}
.tl-meta time{font-variant-numeric:tabular-nums;}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:var(--brand-soft);}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
}
.sign{position:relative;flex:0 0 16px;width:16px;height:16px;transition:transform .24s ease;}
.sign::before,.sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.sign::before{left:0;top:7px;width:16px;height:2px;}
.sign::after{left:7px;top:0;width:2px;height:16px;transition:transform .24s ease;}
.faq-item.is-open .sign{transform:rotate(180deg);}
.faq-item.is-open .sign::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{padding:0 24px 22px;font-size:16px;line-height:1.8;color:var(--ink-2);}

/* 关联入口卡 */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);text-decoration:none;border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.link-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--brand-soft);}
.link-card strong{display:block;font-size:16px;color:var(--ink);font-weight:600;}
.link-card span.sub{display:block;font-size:13px;color:var(--ink-3);margin-top:4px;}
.link-card .arw{color:var(--brand);font-size:18px;transition:transform .2s ease;flex:0 0 auto;}
.link-card:hover .arw{transform:translateX(3px);}

/* CTA 条带 */
.cta-strip{
  background:linear-gradient(135deg,rgba(255,122,26,.1) 0%,rgba(26,86,219,.08) 100%);
  border:1px solid var(--line);border-radius:var(--r-strip);
  padding:36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
}
.cta-strip::after{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.16),transparent 70%);
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:24px;}
.cta-copy p{margin-top:8px;color:var(--ink-2);font-size:15px;}
.cta-form{position:relative;z-index:2;display:flex;gap:10px;flex-wrap:wrap;}
.cta-form input{
  height:48px;min-width:260px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:var(--ink-3);}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,86,219,.12);}
.cta-form input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12);}
.cta-note{margin-top:12px;font-size:13px;color:var(--ink-3);}
.cta-note.is-ok{color:var(--mint);font-weight:600;}

/* 页脚 */
.site-footer{background:#0F2A5C;color:#B9CAE6;margin-top:88px;padding:64px 0 28px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{border-color:#5B8CE8;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#9FB4D6;max-width:280px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#B9CAE6;font-size:14px;border-bottom:2px solid transparent;padding-bottom:1px;transition:color .2s ease,border-color .2s ease;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--accent);}
.footer-sub p{font-size:14px;color:#9FB4D6;margin-bottom:14px;line-height:1.8;}
.footer-sub .btn-primary{background:var(--accent);}
.footer-sub .btn-primary:hover{background:#E96A0C;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA6C8;
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:#B9CAE6;font-size:13px;border-bottom:2px solid transparent;padding-bottom:1px;}
.footer-links a:hover{color:#fff;border-bottom-color:var(--accent);}

/* 空态与骨架 */
.skeleton{
  background:linear-gradient(90deg,#E9EFF8 25%,#F4F7FC 37%,#E9EFF8 63%);
  background-size:400% 100%;animation:breathe 1.2s ease infinite;border-radius:8px;
}
@keyframes breathe{0%{background-position:100% 50%;}100%{background-position:0 50%;}}
.empty-state{text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);}
.empty-state svg{width:40px;height:40px;color:var(--ink-3);margin:0 auto 14px;}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:16px;}

@media (max-width:1279px){
  .container{max-width:1160px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .menu-btn{display:flex;}
  .section{padding:72px 0;}
  .duo-grid{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .cta-strip{flex-direction:column;align-items:flex-start;}
  .cta-form{width:100%;}
  .cta-form input{flex:1 1 240px;min-width:0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:132px 0 64px;}
  .hero h1{font-size:24px;}
  .hero-lead{font-size:16px;}
  .section-head h2{font-size:22px;}
  .cta-strip{padding:26px;border-radius:16px;}
  .cta-copy h2{font-size:20px;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;margin-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .timeline{padding-left:26px;}
  .tl-item::before{left:-25px;}
  .timeline::before{left:6px;}
}
@media (max-width:520px){
  .hero h1{font-size:24px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .cta-form{flex-direction:column;}
  .cta-form input{width:100%;}
  .cta-form .btn{width:100%;}
  .metric-pills{flex-direction:column;align-items:stretch;}
  .metric-pill{justify-content:center;}
  .nav-actions .btn-sm{display:none;}
}