/* roulang page: index */
:root{
  --brand:#1B4F9C;
  --brand-dark:#123A75;
  --brand-deep:#0F3467;
  --brand-soft:#EAF1FB;
  --accent:#F9731A;
  --accent-dark:#D9600A;
  --gold:#FFC53D;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#12203A;
  --muted:#5A6B85;
  --border:#E3E9F2;
  --dark:#0E1B2F;
  --dark-2:#132441;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-sm:0 2px 10px rgba(18,32,58,.06);
  --sh-md:0 10px 28px rgba(18,32,58,.10);
  --sh-brand:0 18px 44px rgba(27,79,156,.14);
  --nav-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.22;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
svg{display:block;}
::selection{background:rgba(27,79,156,.16);}

.skip-link{
  position:absolute;left:12px;top:-60px;z-index:2000;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 10px;
  font-size:14px;font-weight:700;transition:top .2s var(--ease);
}
.skip-link:focus{top:0;}

.container{width:100%;max-width:1120px;margin:0 auto;padding:0 40px;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:#fff;border-right:1px solid var(--border);
  display:none;flex-direction:column;
  padding:26px 18px;z-index:800;overflow-y:auto;
  scrollbar-width:thin;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:#D6DEEB;border-radius:3px;}
.sidebar-brand{
  display:flex;align-items:center;gap:12px;
  padding:0 4px 22px;border-bottom:1px solid var(--border);margin-bottom:20px;
}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:24px;height:24px;}
.brand-text strong{display:block;font-size:16px;font-weight:800;letter-spacing:.01em;line-height:1.25;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.06em;margin-top:2px;}

.nav-group-title{
  font-size:11.5px;font-weight:700;letter-spacing:.14em;color:#93A3BC;
  padding:0 8px;margin:6px 0 8px;
}
.nav-item{
  display:flex;align-items:center;gap:11px;
  padding:11px 12px;border-radius:10px;font-size:15px;font-weight:600;color:#33465F;
  position:relative;transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-item .nav-ico{
  flex:0 0 auto;width:20px;height:20px;opacity:.72;
}
.nav-item .nav-ico svg{width:20px;height:20px;}
.nav-item:hover{background:#F3F7FD;color:var(--brand);}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand);font-weight:800;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.nav-item.is-active .nav-ico{opacity:1;}
.nav-item--sub{font-size:14.5px;font-weight:500;color:var(--muted);padding:9px 12px 9px 20px;}
.nav-item--sub:hover{color:var(--brand);}
.sidebar-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--border);}
.sidebar-note{font-size:12.5px;color:#8C9CB6;line-height:1.6;margin-top:12px;padding:0 4px;}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:900;
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;}
.topbar-brand .brand-mark{width:32px;height:32px;border-radius:9px;}
.topbar-brand .brand-mark svg{width:20px;height:20px;}
.hamburger{
  width:42px;height:42px;border-radius:10px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border:1px solid var(--border);background:#fff;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:.22s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;background:#fff;z-index:890;
  padding:18px;overflow-y:auto;border-top:1px solid var(--border);
  transform:translateY(-10px);opacity:0;pointer-events:none;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.drawer.is-open{transform:none;opacity:1;pointer-events:auto;}

.page{margin-left:0;}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15.5px;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary{background:var(--brand);color:#fff;border-radius:999px;height:50px;padding:0 30px;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(27,79,156,.26);}
.btn-primary:active{transform:translateY(1px);background:var(--brand-deep);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand);border-radius:10px;height:50px;padding:0 26px;}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);background:#DFEAF9;}
.btn-accent{background:var(--accent);color:#fff;border-radius:999px;height:50px;padding:0 30px;}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(249,115,26,.28);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:15px;
  border-bottom:1px solid transparent;transition:border-color .18s var(--ease),gap .18s var(--ease);
}
.text-link:hover{border-bottom-color:var(--brand);gap:10px;}
.text-link svg{width:16px;height:16px;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-badge);padding:4px 10px;line-height:1.6;
}
.tag--accent{background:#FFF0E6;color:var(--accent-dark);}
.tag--gold{background:#FFF7E2;color:#9A6B00;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.1em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:6px 15px;margin-bottom:18px;
}
.section{padding:88px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-title{
  font-size:clamp(24px,2.6vw,36px);position:relative;padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:2px;background:var(--brand);
}
.section-sub{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8;}
.hairline{height:1px;background:var(--border);border:0;margin:0;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(170deg,#FFFFFF 0%,#F1F6FD 62%,#EAF1FB 100%);
  padding:96px 0 84px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(27,79,156,.45) 1.1px,transparent 1.1px);
  background-size:26px 26px;opacity:.09;
  -webkit-mask-image:linear-gradient(118deg,#000 0%,transparent 58%);
  mask-image:linear-gradient(118deg,#000 0%,transparent 58%);
}
.hero > .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;}
.hero-title{font-size:clamp(30px,4vw,50px);margin:0 0 18px;letter-spacing:-.02em;}
.hero-title span{color:var(--brand);}
.hero-sub{font-size:17.5px;color:#3B4E68;line-height:1.75;max-width:520px;margin-bottom:14px;}
.hero-desc{font-size:15.5px;color:var(--muted);line-height:1.85;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh-brand);background:#DCE6F5;}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(14,27,47,0) 48%,rgba(14,27,47,.42) 100%);
}
.hero-float{
  position:absolute;left:20px;bottom:20px;z-index:3;
  background:rgba(255,255,255,.95);border-radius:12px;padding:12px 16px;
  box-shadow:0 8px 22px rgba(14,27,47,.18);backdrop-filter:blur(6px);
}
.hero-float strong{display:block;font-size:19px;font-weight:800;color:var(--brand);letter-spacing:.02em;}
.hero-float span{font-size:12.5px;color:var(--muted);}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:52px;}
.stat{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:18px 20px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.stat-num{font-size:27px;font-weight:800;color:var(--brand);letter-spacing:.02em;line-height:1.2;}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:4px;}

/* ============ 卖点交错横条 ============ */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:38px 0;border-top:1px solid var(--border);
}
.feature-row:last-child{border-bottom:1px solid var(--border);}
.feature-row.is-reverse .feature-media{order:-1;}
.feature-num{
  font-size:40px;font-weight:800;color:#C6D6EE;letter-spacing:.02em;line-height:1;margin-bottom:14px;
}
.feature-title{font-size:22px;margin-bottom:14px;font-weight:800;}
.feature-text{color:var(--muted);font-size:15.8px;line-height:1.85;max-width:520px;margin-bottom:18px;}
.feature-list{margin-bottom:20px;}
.feature-list li{
  position:relative;padding-left:22px;font-size:15.4px;color:#33465F;line-height:1.9;
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.feature-media{border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;background:#E7EEF9;box-shadow:var(--sh-sm);}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.feature-row:hover .feature-media img{transform:scale(1.03);}

/* ============ 演示区 ============ */
.demo-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px;}
.demo-tab{
  padding:9px 20px;border-radius:999px;border:1px solid var(--border);
  background:#fff;font-size:14.5px;font-weight:600;color:var(--muted);
  transition:.2s var(--ease);
}
.demo-tab:hover{border-color:#B9CCE9;color:var(--brand);}
.demo-tab.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.demo-tab:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.demo-frame{
  position:relative;border-radius:20px;overflow:hidden;aspect-ratio:16/9;
  background:#E7EEF9;box-shadow:var(--sh-md);
}
.demo-frame img{width:100%;height:100%;object-fit:cover;}
.demo-caption{
  display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;align-items:center;
  margin-top:20px;padding:20px 24px;background:#fff;border:1px solid var(--border);border-radius:14px;
}
.demo-caption p{color:var(--muted);font-size:15.4px;flex:1 1 340px;}

/* ============ 证据区 ============ */
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.proof-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:38px;}
.proof-stat{
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.proof-stat:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.proof-stat .stat-num{font-size:30px;}
.proof-stat .stat-label{margin-top:6px;line-height:1.6;}
.timeline{position:relative;padding-left:30px;}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand) 0%,#CFDDF2 100%);
}
.timeline li{position:relative;padding-bottom:26px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-30px;top:6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.timeline h4{font-size:16.5px;margin-bottom:6px;}
.timeline p{font-size:14.8px;color:var(--muted);line-height:1.78;}
.timeline time{display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin-bottom:4px;}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:10px 16px;
  border:1px solid var(--border);border-radius:8px;background:#fff;
  font-size:14px;font-weight:600;color:#33465F;transition:.2s var(--ease);
}
.badge:hover{border-color:#B9CCE9;box-shadow:var(--sh-sm);}
.badge .star{color:var(--gold);font-size:15px;line-height:1;}

/* ============ 价格区 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:34px 28px;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);}
.price-card.is-featured{
  border:1px solid var(--brand);box-shadow:var(--sh-brand);transform:translateY(-10px);
}
.price-card.is-featured:hover{transform:translateY(-13px);}
.price-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:800;
  letter-spacing:.06em;padding:5px 16px;border-radius:999px;white-space:nowrap;
}
.price-name{font-size:19px;font-weight:800;margin-bottom:6px;}
.price-desc{font-size:14px;color:var(--muted);margin-bottom:20px;min-height:42px;line-height:1.7;}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-bottom:22px;}
.price-amount b{font-size:34px;font-weight:800;color:var(--brand);letter-spacing:.01em;}
.price-amount span{font-size:14px;color:var(--muted);}
.price-list{margin-bottom:26px;flex:1;}
.price-list li{
  position:relative;padding-left:24px;font-size:14.8px;color:#33465F;line-height:1.85;margin-bottom:6px;
}
.price-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:6px;height:11px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(42deg);border-radius:1px;
}
.price-card.is-featured .price-list li::before{border-color:var(--accent);}
.price-foot-note{
  margin-top:28px;padding:18px 24px;background:#fff;border:1px dashed #C9D8EE;
  border-radius:12px;font-size:14.5px;color:var(--muted);text-align:center;
}

/* ============ 资讯区 ============ */
.news-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:44px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#CFDDF2;}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:#E7EEF9;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17.5px;line-height:1.5;margin:12px 0 10px;font-weight:800;}
.news-body h3 a{transition:color .18s var(--ease);}
.news-body h3 a:hover{color:var(--brand);}
.news-summary{
  font-size:14.6px;color:var(--muted);line-height:1.78;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--border);
  font-size:13px;color:#8595AE;
}
.news-meta a{color:var(--brand);font-weight:700;font-size:13.5px;}
.news-meta a:hover{text-decoration:underline;}
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:56px 28px;text-align:center;color:var(--muted);font-size:15.5px;
}
.empty-state a{color:var(--brand);font-weight:700;margin-left:6px;}
.empty-state a:hover{text-decoration:underline;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.faq-item{
  border:1px solid var(--border);border-radius:12px;background:#fff;
  margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:#C9D8EE;}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-sm);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:700;color:var(--text);line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  transition:transform .28s var(--ease);
}
.faq-icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15.2px;line-height:1.85;}

/* ============ 结尾 CTA ============ */
.cta-section{padding:0 0 88px;}
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;background:var(--dark);
  padding:68px 56px;color:#fff;
}
.cta-band .cta-bg{
  position:absolute;inset:0;object-fit:cover;width:100%;height:100%;opacity:.26;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:30px 30px;opacity:.07;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-inner h2{font-size:clamp(24px,2.8vw,36px);margin-bottom:16px;}
.cta-inner p{color:#B9C8DE;font-size:16px;line-height:1.85;margin-bottom:30px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);}
.cta-points{display:flex;gap:22px;flex-wrap:wrap;margin-top:28px;}
.cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#9FB2CC;}
.cta-points span::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;
}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:#AEBDD4;padding:68px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800;}
.footer-about{line-height:1.85;color:#93A6C1;max-width:330px;}
.footer h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:18px;letter-spacing:.02em;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#AEBDD4;transition:color .18s var(--ease),padding-left .18s var(--ease);}
.footer-links a:hover{color:#fff;padding-left:4px;}
.footer-contact li{margin-bottom:13px;line-height:1.7;color:#93A6C1;}
.footer-contact li b{color:#fff;font-weight:700;display:block;font-size:13.5px;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  color:#7F92AE;font-size:13.5px;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--brand);color:#fff;font-weight:700;font-size:15px;
  border-radius:999px;padding:14px 26px;box-shadow:0 14px 32px rgba(27,79,156,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s,background-color .2s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{background:var(--brand-dark);transform:translateY(-2px);}
.float-cta svg{width:18px;height:18px;}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;display:none;
  gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--border);
}
.mobile-bar .btn{flex:1;height:48px;font-size:15px;}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  .topbar{display:none;}
  .drawer{display:none !important;}
  .sidebar{display:flex;width:72px;padding:22px 12px;align-items:stretch;}
  .sidebar .brand-text,
  .sidebar .nav-label,
  .sidebar .nav-group-title,
  .sidebar .sidebar-note,
  .sidebar .nav-item--sub{display:none;}
  .sidebar .sidebar-brand{justify-content:center;padding:0 0 20px;}
  .sidebar .nav-item{justify-content:center;padding:12px 0;}
  .sidebar .nav-item.is-active::before{left:-12px;}
  .page{margin-left:72px;}
  .container{padding:0 32px;}
}
@media (min-width:1280px){
  .sidebar{width:var(--nav-w);padding:26px 18px;}
  .sidebar .brand-text{display:block;}
  .sidebar .nav-label{display:inline;}
  .sidebar .nav-group-title{display:block;}
  .sidebar .sidebar-note{display:block;}
  .sidebar .nav-item{justify-content:flex-start;padding:11px 12px;}
  .sidebar .nav-item--sub{display:flex;}
  .sidebar .sidebar-brand{justify-content:flex-start;padding:0 4px 22px;}
  .sidebar .nav-item.is-active::before{left:0;}
  .page{margin-left:var(--nav-w);}
  .container{padding:0 40px;}
}
@media (max-width:1023px){
  .hero{padding:64px 0 60px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{aspect-ratio:16/10;max-width:640px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:36px;}
  .feature-row{grid-template-columns:1fr;gap:26px;padding:30px 0;}
  .feature-row.is-reverse .feature-media{order:0;}
  .proof-grid{grid-template-columns:1fr;gap:40px;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.is-featured{transform:none;}
  .price-card.is-featured:hover{transform:translateY(-4px);}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:48px 32px;border-radius:18px;}
  .section{padding:64px 0;}
  .section--tight{padding:54px 0;}
  .cta-section{padding:0 0 64px;}
}
@media (max-width:767px){
  body{font-size:15.5px;padding-bottom:72px;}
  .container{padding:0 18px;}
  .hero{padding:48px 0 52px;}
  .hero-title{font-size:clamp(27px,7.4vw,34px);}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-visual{aspect-ratio:4/3;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .section-head{margin-bottom:34px;}
  .news-grid{grid-template-columns:1fr;}
  .proof-stats{grid-template-columns:1fr 1fr;gap:12px;}
  .badges{gap:10px;}
  .float-cta{display:none;}
  .mobile-bar{display:flex;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .cta-band{padding:38px 24px;}
  .cta-actions .btn{width:100%;}
  .cta-points{gap:14px;}
  .demo-caption{padding:16px 18px;}
  .faq-q{padding:17px 18px;font-size:15.6px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.8px;}
  .price-card{padding:28px 22px;}
  .news-body{padding:18px 20px 20px;}
}
@media (max-width:479px){
  .hero-stats{grid-template-columns:1fr 1fr;}
  .stat-num{font-size:22px;}
  .feature-num{font-size:32px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .proof-stats{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
/* ============ 设计令牌 ============ */
:root{
  --brand:#1B4F9C;
  --brand-dark:#123A75;
  --brand-soft:#EAF1FB;
  --accent:#F9731A;
  --accent-dark:#D85F0C;
  --gold:#FFC53D;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#12203A;
  --muted:#5A6B85;
  --border:#E3E9F2;
  --dark:#0E1B2F;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 2px 10px rgba(18,32,58,.06);
  --sh-md:0 10px 28px rgba(18,32,58,.10);
  --sh-lg:0 18px 44px rgba(27,79,156,.14);
  --sidebar-w:248px;
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe 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);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0;color:#fff;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ============ 布局骨架 ============ */
.app-shell{min-height:100vh;}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.main-area main{flex:1 1 auto;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:24px 18px 20px;overflow-y:auto;z-index:1000;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),#2A6BC4);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(27,79,156,.24);
}
.brand-mark svg{width:24px;height:24px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.06em;}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;
  background:#fff;color:var(--brand);align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--brand);background:var(--brand-soft);}
.menu-toggle svg{width:20px;height:20px;}

.side-links{display:flex;flex-direction:column;gap:4px;margin-top:26px;}
.nav-group-title{
  font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.14em;
  padding:0 12px 10px;
}
.nav-item{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  color:var(--text);font-size:14.5px;font-weight:500;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);}
.nav-item.is-active{
  background:var(--brand-soft);color:var(--brand);
  border-left-color:var(--brand);font-weight:700;
}
.nav-item--sub{padding-left:14px;font-size:14px;color:var(--muted);}
.nav-item--sub:hover{color:var(--brand);}
.nav-ico{width:18px;height:18px;flex:0 0 18px;color:currentColor;}
.nav-ico svg{width:100%;height:100%;display:block;}
.nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

.sidebar-foot{margin-top:auto;padding-top:24px;}
.sidebar-foot p{font-size:12.5px;color:var(--muted);margin-top:10px;line-height:1.6;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.2;text-align:center;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(27,79,156,.20);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(27,79,156,.26);}
.btn-primary:active{background:var(--brand-dark);transform:translateY(1px);box-shadow:none;}
.btn-accent{background:var(--accent);color:#fff;border-radius:var(--r-pill);box-shadow:0 8px 20px rgba(249,115,26,.26);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--border);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ============ 文章头部横幅 ============ */
.article-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(14,27,47,.86),rgba(27,79,156,.72)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  color:#fff;padding:44px 0 56px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.10;
  background-image:radial-gradient(circle,#fff 1px,transparent 1px);
  background-size:26px 26px;
}
.article-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78);}
.crumb a{color:rgba(255,255,255,.88);}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb .sep{opacity:.55;}
.crumb .current{color:#fff;font-weight:600;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);}
.article-hero p.hero-sub{margin-top:14px;max-width:620px;font-size:15px;color:rgba(255,255,255,.82);line-height:1.7;}

/* ============ 文章主体栅格 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;
  padding-top:56px;padding-bottom:96px;
  align-items:start;
}
.article-main{min-width:0;}

.article-head{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:32px 34px 26px;box-shadow:var(--sh-sm);}
.article-head h1{font-size:clamp(28px,3.2vw,40px);line-height:1.25;font-weight:800;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  margin-top:18px;padding-top:18px;border-top:1px solid var(--border);
  font-size:13.5px;color:var(--muted);
}
.article-meta .m-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta svg{width:15px;height:15px;color:var(--brand);}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.tag--accent{background:rgba(249,115,26,.10);color:var(--accent-dark);}
.tag--gold{background:rgba(255,197,61,.18);color:#8A6100;}

/* ============ 正文排版 ============ */
.article-content{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:36px 34px 40px;margin-top:22px;box-shadow:var(--sh-sm);
  max-width:100%;font-size:17px;line-height:1.8;color:var(--text);
}
.article-content > *:first-child{margin-top:0;}
.article-content h2{
  position:relative;font-size:clamp(21px,2.1vw,27px);line-height:1.35;
  margin:40px 0 16px;padding-left:14px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  background:var(--brand);border-radius:2px;
}
.article-content h3{font-size:20px;margin:32px 0 12px;font-weight:700;}
.article-content h4{font-size:17px;margin:26px 0 10px;font-weight:700;color:var(--brand-dark);}
.article-content p{margin:0 0 18px;max-width:38em;}
.article-content ul,.article-content ol{padding-left:6px;margin:0 0 20px;}
.article-content ul li{position:relative;padding-left:22px;margin:9px 0;line-height:1.85;}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;
  background:var(--brand);border-radius:2px;
}
.article-content ol{counter-reset:li;padding-left:0;}
.article-content ol li{position:relative;padding-left:30px;margin:9px 0;counter-increment:li;}
.article-content ol li::before{
  content:counter(li);position:absolute;left:0;top:.35em;
  width:20px;height:20px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-content blockquote{
  margin:26px 0;padding:16px 22px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:#243A5E;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-sm);}
.article-content figure{margin:26px 0;}
.article-content figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;}
.article-content table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;}
.article-content th{background:#F2F6FC;font-weight:700;color:var(--brand-dark);}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--brand-dark);}
.article-content code{background:#F2F6FC;padding:2px 6px;border-radius:6px;font-size:14.5px;}
.article-content strong{font-weight:700;}

/* 空态 */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:56px 32px;margin-top:22px;text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--muted);margin-bottom:22px;max-width:none;}

/* ============ 文末区块 ============ */
.article-foot{margin-top:28px;display:flex;flex-direction:column;gap:24px;}
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--sh-sm);}
.panel-title{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:17px;font-weight:800;margin-bottom:18px;
}
.panel-title .bar{display:inline-block;width:4px;height:16px;background:var(--brand);border-radius:2px;margin-right:10px;vertical-align:-2px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag-link{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid var(--border);background:#fff;color:var(--muted);font-size:13.5px;font-weight:600;
  transition:all .2s ease;
}
.tag-link:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#D3DEF0;}
.related-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#EDF2F9;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .rc-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-card h3{font-size:16px;line-height:1.5;font-weight:700;}
.related-card h3 a{color:var(--text);}
.related-card h3 a:hover{color:var(--brand);}
.related-card p{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .rc-meta{font-size:12.5px;color:var(--muted);margin-top:auto;}

.back-entry{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  background:var(--brand-soft);border:1px solid #D5E3F6;border-radius:var(--r-card);padding:22px 26px;
}
.back-entry strong{font-size:16px;}
.back-entry span{font-size:13.5px;color:var(--muted);display:block;margin-top:4px;}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px 22px 24px;box-shadow:var(--sh-sm);}
.side-card h3{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:14px;background:var(--brand);border-radius:2px;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 0;font-size:14px;color:var(--text);border-bottom:1px dashed var(--border);
}
.side-nav li:last-child a{border-bottom:0;}
.side-nav a:hover{color:var(--brand);}
.side-nav .num{font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.06em;}
.hot-list li{padding:12px 0;border-bottom:1px solid var(--border);}
.hot-list li:last-child{border-bottom:0;padding-bottom:0;}
.hot-list a{display:block;font-size:14px;line-height:1.6;color:var(--text);font-weight:600;}
.hot-list a:hover{color:var(--brand);}
.hot-list .hint{font-size:12.5px;color:var(--muted);margin-top:4px;display:block;font-weight:400;}
.side-cta{
  background:linear-gradient(150deg,#123A75,#1B4F9C 62%,#2A6BC4);
  color:#fff;border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-lg);
}
.side-cta h3{font-size:17px;font-weight:800;color:#fff;margin-bottom:10px;display:block;}
.side-cta h3::before{display:none;}
.side-cta p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.7;margin-bottom:18px;}
.side-cta .btn{width:100%;}
.side-cta .side-note{font-size:12px;color:rgba(255,255,255,.66);margin-top:12px;text-align:center;}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{font-size:17px;color:#fff;font-weight:800;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);box-shadow:none;}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:34em;}
.footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.7;margin-bottom:12px;}
.footer-contact b{display:block;color:#fff;font-size:13.5px;font-weight:700;margin-bottom:2px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-bar{display:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:72px;}
  .sidebar{padding:24px 12px 18px;align-items:center;}
  .brand-text,.nav-group-title,.nav-label,.sidebar-foot p{display:none;}
  .nav-item{justify-content:center;padding:12px 0;border-left-width:0;border-radius:12px;}
  .nav-item.is-active{border-left:0;box-shadow:inset 3px 0 0 var(--brand);}
  .nav-item--sub{display:none;}
  .side-links{margin-top:22px;width:100%;}
  .sidebar-foot{width:100%;}
  .sidebar-foot .btn{padding:12px 0;font-size:0;}
  .sidebar-foot .btn::before{content:"需求";font-size:13px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px;}
}
@media (max-width:1023px){
  .sidebar{
    position:fixed;left:0;right:0;top:0;bottom:auto;width:100%;height:60px;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 18px;overflow:visible;
    box-shadow:0 2px 14px rgba(18,32,58,.08);
  }
  .sidebar-head{width:100%;}
  .brand-text{display:flex;}
  .brand-text em{display:none;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;}
  .brand-mark svg{width:20px;height:20px;}
  .menu-toggle{display:flex;}
  .side-links{
    position:fixed;left:0;right:0;top:60px;margin-top:0;width:100%;
    background:#fff;border-bottom:1px solid var(--border);
    padding:14px 18px 20px;gap:4px;display:none;flex-direction:column;
    max-height:calc(100vh - 60px);overflow-y:auto;
    box-shadow:0 16px 32px rgba(18,32,58,.12);z-index:999;
  }
  .side-links.is-open{display:flex;}
  .nav-group-title,.nav-label{display:block;}
  .nav-item{justify-content:flex-start;padding:12px;border-radius:10px;}
  .nav-item.is-active{box-shadow:none;border-left:3px solid var(--brand);}
  .nav-item--sub{display:flex;}
  .sidebar-foot{display:none;}
  .main-area{margin-left:0;padding-top:60px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:36px;padding-bottom:72px;}
  .article-side{position:static;order:2;}
  .article-main{order:1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;padding-bottom:72px;}
  .container{padding:0 18px;}
  .article-hero{padding:30px 0 40px;}
  .article-head{padding:24px 20px 20px;}
  .article-content{padding:26px 20px 30px;font-size:16px;}
  .article-content p{max-width:none;}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
  .related-grid{grid-template-columns:1fr;}
  .panel{padding:22px 20px;}
  .back-entry{flex-direction:column;align-items:flex-start;}
  .footer{padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:900;
    background:#fff;border-top:1px solid var(--border);
    padding:8px 12px calc(8px + env(safe-area-inset-bottom));
    box-shadow:0 -6px 20px rgba(18,32,58,.08);
  }
  .mobile-bar .btn{flex:1;padding:12px 10px;font-size:14.5px;}
}
@media (max-width:520px){
  .article-meta{gap:10px 14px;font-size:13px;}
  .hero-kicker{font-size:12px;}
  .brand-text strong{font-size:15px;}
  .btn{width:100%;}
  .mobile-bar .btn{width:auto;}
  .tag-row{gap:8px;}
}

/* roulang page: category2 */
:root{
  --brand:#1B4F9C;
  --brand-dark:#123A75;
  --brand-soft:#EAF1FB;
  --accent:#F9731A;
  --accent-dark:#DB5F08;
  --gold:#FFC53D;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#12203A;
  --muted:#5A6B85;
  --border:#E3E9F2;
  --dark:#0E1B2F;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-1:0 2px 10px rgba(18,32,58,.06);
  --sh-2:0 10px 28px rgba(18,32,58,.10);
  --sh-3:0 18px 44px rgba(27,79,156,.14);
  --sidebar-w:248px;
  --sec-gap:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-dark);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{line-height:1.2;margin:0;font-weight:800;letter-spacing:-.01em;}
h1{font-size:clamp(30px,3.4vw,46px);}
h2{font-size:clamp(24px,2.4vw,34px);}
h3{font-size:20px;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:1200;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-input) 0;
}
.skip-link:focus{left:0;color:#fff;}

/* ============ 布局骨架 ============ */
.shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:100vh;}
.content{min-width:0;display:flex;flex-direction:column;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.section{padding:var(--sec-gap) 0;}
.section--tight{padding:64px 0;}
.section--alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block;}
.section-head p{color:var(--muted);margin-top:14px;font-size:16.5px;}
.lead{color:var(--muted);}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:800;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  padding:0 16px;height:60px;align-items:center;justify-content:space-between;
}
.topbar .tb-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text);}
.tb-burger{
  width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.tb-burger span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.tb-burger span::before,.tb-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);}
.tb-burger span::before{top:-6px;}
.tb-burger span::after{top:6px;}
.scrim{
  display:none;position:fixed;inset:0;background:rgba(14,27,47,.45);z-index:880;
}
.scrim.is-on{display:block;}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:sticky;top:0;height:100vh;overflow-y:auto;
  background:#fff;border-right:1px solid var(--border);
  padding:26px 18px 22px;display:flex;flex-direction:column;
}
.brand{display:flex;align-items:center;gap:11px;padding:0 8px 22px;border-bottom:1px solid var(--border);margin-bottom:20px;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text strong{display:block;font-size:15.5px;line-height:1.25;letter-spacing:.01em;}
.brand-text span{display:block;font-size:12px;color:var(--muted);letter-spacing:.08em;}
.nav-group-title{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:#8593AA;
  padding:0 10px;margin-bottom:10px;text-transform:uppercase;
}
.side-links{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;align-items:center;gap:11px;
  padding:11px 12px;border-radius:10px;color:#2A3B58;font-size:15px;font-weight:600;
  border-left:3px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-dark);}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.nav-ico{width:20px;height:20px;flex:0 0 20px;display:inline-flex;color:currentColor;}
.nav-ico svg{width:20px;height:20px;}
.nav-item--sub{
  font-size:14px;font-weight:500;color:var(--muted);padding:8px 12px 8px 30px;border-left-color:transparent;
}
.nav-item--sub::before{
  content:"";width:5px;height:5px;border-radius:50%;background:#C3CEDF;display:block;flex:0 0 5px;
}
.nav-item--sub.is-current{color:var(--brand);background:#F4F8FE;}
.nav-item--sub.is-current::before{background:var(--brand);}
.side-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--border);}
.side-foot p{font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.6;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .16s ease,background .16s ease,box-shadow .16s ease,color .16s ease,border-color .16s ease;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(27,79,156,.22);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn--primary:active{background:#0F3468;transform:translateY(1px);}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(249,115,26,.28);}
.btn--accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn--accent:active{background:#C25507;transform:translateY(1px);}
.btn--ghost{background:#fff;color:var(--brand);border-color:#C9D8EE;}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);}
.btn--light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4);}
.btn--light:hover{background:rgba(255,255,255,.2);color:#fff;}
.btn--sm{padding:9px 18px;font-size:14px;}
.btn--block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  padding:5px 11px;border-radius:var(--r-badge);
}
.tag--accent{background:#FEF0E4;color:#B5520C;}
.tag--gold{background:#FFF6DF;color:#8A6206;}
.tag--dark{background:rgba(255,255,255,.14);color:#DCE7F8;}

/* ============ Hero ============ */
.hero{position:relative;padding:72px 0 0;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,#F6F8FB 100%);}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center right;
  opacity:.08;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  font-size:18px;color:#33455F;max-width:34em;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-notes{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:14px;color:var(--muted);}
.hero-notes span{display:inline-flex;align-items:center;gap:7px;}
.hero-notes span::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);display:block;
}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-3);
}
.hero-figure::after{
  content:"";position:absolute;inset:-14px -14px auto auto;width:96px;height:96px;
  border-radius:20px;border:2px dashed rgba(27,79,156,.28);
  border-bottom-color:transparent;border-left-color:transparent;
}
.stat-bar{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px 26px;margin-top:56px;
}
.stat-bar li{border-left:1px solid var(--border);padding-left:20px;}
.stat-bar li:first-child{border-left:0;padding-left:0;}
.stat-bar b{display:block;font-size:clamp(22px,2.2vw,30px);font-weight:800;letter-spacing:.02em;color:var(--brand);line-height:1.2;}
.stat-bar span{font-size:13.5px;color:var(--muted);}

/* ============ 筛选标签行 ============ */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid var(--border);background:#fff;
  font-size:14px;font-weight:600;color:#33455F;cursor:pointer;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(27,79,156,.2);}
.chip i{font-style:normal;font-size:12.5px;color:#8B99AF;}
.chip.is-on i{color:rgba(255,255,255,.75);}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3DEEE;}
.card-media{display:block;overflow:hidden;background:#EDF2F9;}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{margin-top:2px;}
.card-body p{color:var(--muted);font-size:15.5px;}
.card-facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.card-facts li{
  font-size:12.5px;color:#3C4E6B;background:#F2F6FC;border:1px solid #E4ECF7;
  padding:4px 10px;border-radius:var(--r-badge);
}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;font-weight:700;color:var(--brand);margin-top:4px;
}
.link-more::after{content:"→";transition:transform .2s ease;display:inline-block;}
.link-more:hover::after{transform:translateX(4px);}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split--reverse .split-media{order:2;}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.split-body h3{font-size:22px;margin-bottom:14px;}
.split-body p{color:var(--muted);margin-bottom:18px;}
.list-check{display:flex;flex-direction:column;gap:12px;}
.list-check li{
  position:relative;padding-left:30px;line-height:1.7;font-size:15.5px;color:#2C3D59;
}
.list-check li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:5px;
  background:var(--brand-soft);border:1px solid #C9D8EE;
}
.list-check li::after{
  content:"";position:absolute;left:5px;top:12px;width:6px;height:3px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg);
}
.list-check li b{color:var(--text);}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),#C9D8EE);
}
.timeline li{position:relative;padding:0 0 30px 0;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-31px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.timeline h3{font-size:18px;margin-bottom:8px;}
.timeline h3 em{
  font-style:normal;font-size:12.5px;font-weight:700;color:var(--accent);
  letter-spacing:.1em;margin-right:10px;
}
.timeline p{color:var(--muted);font-size:15.5px;max-width:56em;}

/* ============ 保障区 ============ */
.badge-row{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 34px;}
.badge{
  display:inline-flex;align-items:center;gap:9px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-badge);
  padding:10px 16px;font-size:14px;font-weight:600;color:#2C3D59;box-shadow:var(--sh-1);
}
.badge svg{width:17px;height:17px;color:var(--brand);}
.evidence-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.evidence{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
}
.evidence h3{font-size:17.5px;margin-bottom:10px;}
.evidence p{color:var(--muted);font-size:15.5px;}

/* ============ 组合建议 ============ */
.plan-list{display:flex;flex-direction:column;gap:16px;}
.plan{
  display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:center;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.plan:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#C9D8EE;}
.plan-name{font-size:18px;font-weight:800;}
.plan-name span{display:block;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.06em;margin-top:4px;}
.plan-desc{color:var(--muted);font-size:15.5px;}
.plan-desc b{color:var(--text);font-weight:700;}
.plan .btn{justify-self:end;}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{border:1px solid var(--border);border-radius:12px;background:#fff;overflow:hidden;transition:border-color .2s ease;}
.faq-item.is-open{border-color:var(--brand);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;text-align:left;padding:20px 24px;font-size:16.5px;font-weight:700;cursor:pointer;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{padding:0 24px 22px;color:var(--muted);line-height:1.8;font-size:15.5px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--dark);color:#fff;border-radius:20px;
  padding:52px;overflow:hidden;display:grid;grid-template-columns:1.3fr auto;gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;opacity:.10;
}
.cta-band > *{position:relative;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:#B9C7DD;max-width:44em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:#A9B7CC;padding:64px 0 28px;margin-top:auto;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;color:#fff;}
.footer-brand strong{font-size:17px;letter-spacing:.01em;}
.footer-about{line-height:1.8;color:#93A3BC;font-size:13.5px;}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#A9B7CC;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:#93A3BC;}
.footer-contact b{color:#fff;font-weight:600;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8593AA;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;display:flex;gap:10px;align-items:center;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
}
.float-cta.is-on{opacity:1;visibility:visible;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:78px;}
  .brand-text,.nav-label,.nav-group-title,.side-foot p{display:none;}
  .brand{justify-content:center;padding-left:0;padding-right:0;}
  .nav-item{justify-content:center;padding:12px 6px;border-left-width:3px;}
  .nav-item--sub{padding:10px 6px;font-size:12px;}
  .nav-item--sub .nav-label{display:block;font-size:11px;}
  .side-foot .btn{width:100%;padding:12px 6px;font-size:12px;}
  .hero-inner{gap:36px;}
  .container{padding:0 28px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  :root{--sec-gap:72px;}
  .shell{grid-template-columns:1fr;}
  .topbar{display:flex;}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:284px;max-width:86vw;height:100vh;
    z-index:890;transform:translateX(-102%);
    transition:transform .28s ease;box-shadow:0 0 40px rgba(14,27,47,.22);
  }
  .sidebar.is-open{transform:translateX(0);}
  .container{padding:0 24px;}
  .hero{padding-top:44px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-figure{order:-1;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:20px 16px;margin-top:40px;}
  .stat-bar li:nth-child(3){border-left:0;padding-left:0;}
  .split{grid-template-columns:1fr;gap:30px;}
  .split--reverse .split-media{order:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .evidence-grid{grid-template-columns:1fr;}
  .plan{grid-template-columns:1fr;gap:14px;}
  .plan .btn{justify-self:start;}
  .cta-band{grid-template-columns:1fr;padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  :root{--sec-gap:56px;}
  body{font-size:15.5px;padding-bottom:72px;}
  .container{padding:0 16px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions{gap:10px;}
  .card-grid{grid-template-columns:1fr;}
  .stat-bar{padding:20px;}
  .stat-bar b{font-size:22px;}
  .section--tight{padding:48px 0;}
  .footer{padding:48px 0 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{
    right:0;left:0;bottom:0;gap:8px;padding:8px 12px;
    background:rgba(255,255,255,.97);border-top:1px solid var(--border);
    box-shadow:0 -6px 22px rgba(18,32,58,.10);
  }
  .float-cta .btn{flex:1;padding:12px 10px;font-size:14px;}
  .cta-band{border-radius:14px;}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%;}
  .stat-bar{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --brand:#1B4F9C;
  --brand-dark:#123A75;
  --brand-light:#E8F0FB;
  --brand-soft:#F1F5FC;
  --accent:#F9731A;
  --accent-dark:#DC5F0A;
  --gold:#FFC53D;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#12203A;
  --muted:#5A6B85;
  --line:#E3E9F2;
  --dark:#0E1B2F;
  --ok:#1F8A5B;
  --ok-bg:#EAF7F0;
  --err:#C0392B;
  --err-bg:#FDEEEC;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-1:0 2px 10px rgba(18,32,58,.06);
  --sh-2:0 10px 28px rgba(18,32,58,.10);
  --sh-3:0 18px 44px rgba(27,79,156,.14);
  --sidebar-w:268px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.24;font-weight:800;letter-spacing:-.005em}
h1{font-size:clamp(30px,4vw,50px)}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(27,79,156,.16)}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:1200;
  background:var(--brand);color:#fff;padding:12px 20px;border-radius:0 0 10px 0;font-size:14.5px
}
.skip-link:focus{left:0;color:#fff}

/* ============ 容器 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
@media(max-width:1023px){.container{padding:0 24px}}
@media(max-width:520px){.container{padding:0 16px}}

/* ============ 骨架布局 ============ */
.shell{display:block}

/* ============ 顶部条（移动端） ============ */
.topbar{
  position:sticky;top:0;z-index:950;
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:9px;color:var(--text)}
.topbar-brand .brand-mark{width:26px;height:26px}
.topbar-brand strong{font-size:16px;letter-spacing:.01em}
.menu-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);color:var(--text);
  padding:8px 14px;border-radius:10px;font-size:14px;cursor:pointer;transition:.18s
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}
.menu-toggle[aria-expanded="true"]{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark)}
.menu-toggle .bars{display:inline-block;width:15px;height:2px;background:currentColor;position:relative}
.menu-toggle .bars::before,.menu-toggle .bars::after{content:"";position:absolute;left:0;width:15px;height:2px;background:currentColor}
.menu-toggle .bars::before{top:-5px}
.menu-toggle .bars::after{top:5px}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;left:0;right:0;top:60px;z-index:940;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
  max-height:0;overflow:hidden;transition:max-height .32s ease;
}
.drawer.is-open{max-height:78vh;overflow-y:auto}
.drawer-inner{padding:16px 18px 24px;display:grid;gap:6px}
.drawer .nav-item{padding:12px 14px}
.drawer-cta{margin-top:12px}
body.drawer-open{overflow:hidden}

/* ============ 侧边栏 ============ */
.brand-mark{width:30px;height:30px;display:inline-flex;flex:0 0 auto}

.sidebar{display:none}
@media(min-width:1024px){
  .topbar,.drawer{display:none}
  .shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr)}
  .sidebar{
    display:block;position:sticky;top:0;align-self:start;
    height:100vh;overflow-y:auto;
    background:#fff;border-right:1px solid var(--line);
  }
  .sidebar::-webkit-scrollbar{width:6px}
  .sidebar::-webkit-scrollbar-thumb{background:#D7E0EE;border-radius:6px}
}
.side-inner{display:flex;flex-direction:column;min-height:100%;padding:26px 18px 22px}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 6px 20px;color:var(--text);border-bottom:1px solid var(--line)}
.side-brand-text{display:flex;flex-direction:column;line-height:1.25}
.side-brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.side-brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em}

.side-links{margin-top:20px;display:grid;gap:4px}
.nav-group-title{
  font-size:11.5px;letter-spacing:.14em;color:#93A2B8;
  padding:0 12px;margin-bottom:8px;text-transform:uppercase
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:11px;
  padding:11px 14px 11px 16px;border-radius:10px;
  color:#3A4A66;font-size:14.6px;line-height:1.5;
  transition:background .18s ease,color .18s ease,transform .18s ease
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-dark)}
.nav-item.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:700}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--brand)
}
.nav-ico{width:20px;height:20px;flex:0 0 auto;display:inline-flex;color:currentColor}
.nav-ico svg{width:100%;height:100%}
.nav-item--sub{
  padding:8px 14px 8px 30px;font-size:14px;color:var(--muted);border-radius:8px
}
.nav-item--sub:hover{color:var(--brand);background:var(--brand-soft)}
.nav-item--sub.is-current{color:var(--brand);font-weight:700}

.side-cta{
  margin-top:auto;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  padding:13px 18px;border-radius:999px;box-shadow:0 8px 20px rgba(249,115,26,.28);
  transition:.2s
}
.side-cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.side-cta:active{transform:translateY(1px);background:#C5530A}
.side-meta{margin-top:12px;font-size:12.5px;color:#93A2B8;text-align:center;line-height:1.7}

@media(min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:76px}
  .side-inner{padding:22px 12px}
  .side-brand{justify-content:center;padding:0 0 18px}
  .side-brand-text{display:none}
  .nav-group-title,.nav-label,.side-meta{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item--sub{display:none}
  .side-cta span{display:none}
  .side-cta{padding:13px 0;width:100%}
  .side-cta svg{display:block}
}

/* ============ 通用板块 ============ */
.main{min-width:0}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.1em;
  color:var(--brand);background:var(--brand-light);
  padding:6px 13px;border-radius:var(--r-badge);margin-bottom:16px
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section-lead{margin-top:14px;color:var(--muted);font-size:16.5px;max-width:66ch}
.section-title{position:relative;padding-left:16px}
.section-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:4px;background:var(--brand)
}
.section-head.center .section-title{padding-left:0}
.section-head.center .section-title::before{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:700;font-size:15.5px;line-height:1;
  padding:15px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .18s ease,
    box-shadow .18s ease,color .18s ease,border-color .18s ease;
  text-align:center
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(27,79,156,.22)}
.btn-primary:hover{background:#17458A;color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(27,79,156,.28)}
.btn-primary:active{background:#123A75;transform:translateY(1px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(249,115,26,.26)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-accent:active{background:#C5530A;transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C7D6EC;border-radius:10px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}
.btn-block{width:100%}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;font-size:14.5px;color:var(--brand);
  border-bottom:2px solid transparent;padding-bottom:2px;transition:.18s
}
.text-link::after{content:"→";transition:transform .18s ease}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand)}
.text-link:hover::after{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F0F5FC 100%);
  border-bottom:1px solid var(--line)
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(27,79,156,.13) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,transparent 0%,#000 42%,transparent 100%);
  mask-image:linear-gradient(180deg,transparent 0%,#000 42%,transparent 100%)
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;
  min-height:600px;padding:72px 0
}
.hero-copy{max-width:620px}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:18px;color:#3F5170;max-width:46ch;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  padding-top:26px;border-top:1px solid rgba(27,79,156,.14)
}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats .num{
  font-size:clamp(21px,2.2vw,27px);font-weight:800;color:var(--brand-dark);
  letter-spacing:.02em;line-height:1.2
}
.hero-stats .num em{font-style:normal;color:var(--accent)}
.hero-stats .lab{font-size:13px;color:var(--muted);letter-spacing:.02em}
.hero-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-3);aspect-ratio:16/12;background:#DCE6F5
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(14,27,47,.72);color:#EAF1FB;font-size:13px;
  padding:9px 14px;border-radius:10px;backdrop-filter:blur(4px)
}

/* ============ 数据条 ============ */
.strip{
  background:var(--dark);color:#C7D5E8;border-radius:var(--r-card);
  padding:26px 30px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px
}
.strip div{display:flex;flex-direction:column;gap:3px}
.strip b{color:#fff;font-size:20px;letter-spacing:.02em}
.strip span{font-size:13px;color:#8FA1BA}

/* ============ 服务能力列表 ============ */
.cap-list{display:grid;gap:16px}
.cap-item{
  display:grid;grid-template-columns:78px minmax(0,1fr) auto;gap:26px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 30px;box-shadow:var(--sh-1);transition:.22s
}
.cap-item:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#CFDDF1}
.cap-num{
  font-size:26px;font-weight:800;color:var(--brand);opacity:.28;letter-spacing:.02em;
  line-height:1
}
.cap-item h3{margin-bottom:6px}
.cap-item p{color:var(--muted);font-size:15.5px;max-width:62ch}

/* ============ 交错图文 ============ */
.flow{display:grid;gap:84px}
.flow-item{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:52px;align-items:center}
.flow-item:nth-child(even) .flow-media{order:-1}
.flow-media{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/10;background:#E4EBF6
}
.flow-media img{width:100%;height:100%;object-fit:cover}
.flow-index{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;
  color:var(--accent);letter-spacing:.12em;margin-bottom:12px
}
.flow-index::after{content:"";width:34px;height:2px;background:var(--accent);opacity:.45;border-radius:2px}
.flow-body h3{font-size:22px;margin-bottom:12px}
.flow-body p{color:var(--muted);font-size:15.5px}
.check-list{margin-top:20px;display:grid;gap:11px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:#33455F;line-height:1.7}
.check-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:9px;height:9px;
  border-radius:2px;background:var(--brand)
}
.flow-body .text-link{margin-top:22px}

/* ============ 场景卡 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);color:#3A4A66;
  font-size:13.5px;padding:8px 15px;border-radius:999px;transition:.18s
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.tag.is-on{background:var(--brand);border-color:var(--brand);color:#fff}
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);transition:.22s;border-left:4px solid var(--brand)
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-left-color:var(--accent)}
.scene-card h3{font-size:18px;margin-bottom:8px}
.scene-card p{color:var(--muted);font-size:15px}
.scene-card .badge{margin-bottom:12px}

/* ============ 标签徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;letter-spacing:.03em;
  padding:4px 10px;border-radius:var(--r-badge);
  background:var(--brand-light);color:var(--brand-dark)
}
.badge--accent{background:#FFF0E5;color:#B85008}
.badge--gold{background:#FFF6DC;color:#8A6100}

/* ============ 流程时间轴 ============ */
.timeline{position:relative;display:grid;gap:0;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:15px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand),#C4D7F0)
}
.tl-item{position:relative;padding:0 0 32px 52px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:8px;top:8px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(27,79,156,.1)
}
.tl-item:last-child::before{border-color:var(--accent);box-shadow:0 0 0 4px rgba(249,115,26,.12)}
.tl-item h3{font-size:18px;margin-bottom:6px}
.tl-item p{color:var(--muted);font-size:15px;max-width:70ch}
.tl-item .tl-when{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand);
  background:var(--brand-light);padding:3px 10px;border-radius:var(--r-badge);margin-bottom:9px
}

/* ============ 证据区 ============ */
.proof-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.proof-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.proof-stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1)
}
.proof-stat b{display:block;font-size:30px;font-weight:800;color:var(--brand-dark);letter-spacing:.02em;line-height:1.15}
.proof-stat b em{font-style:normal;font-size:16px;color:var(--accent);margin-left:2px}
.proof-stat span{font-size:13.5px;color:var(--muted)}
.proof-aside p{color:var(--muted);font-size:15.5px;margin-bottom:22px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.badge-row span{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-badge);
  padding:9px 14px;font-size:13.5px;color:#33455F
}
.badge-row span i{
  width:7px;height:7px;border-radius:50%;background:var(--gold);display:inline-block
}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease
}
.faq-item:hover{border-color:#CFDDF1}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:16.5px;font-weight:700;color:var(--text);
  transition:color .18s ease
}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand-dark)}
.faq-q .chev{
  flex:0 0 auto;width:20px;height:20px;color:var(--brand);
  transition:transform .26s ease
}
.faq-item.is-open .chev{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease
}
.faq-a p{
  padding:0 24px 22px;color:var(--muted);font-size:15.5px;line-height:1.8;max-width:78ch
}

/* ============ CTA + 表单 ============ */
.cta{
  position:relative;overflow:hidden;color:#E8F0FB;
  background-color:var(--dark);
  background-image:linear-gradient(90deg,rgba(14,27,47,.94) 0%,rgba(14,27,47,.80) 55%,rgba(14,27,47,.62) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:56px;align-items:start;padding:88px 0}
.cta h2{color:#fff;margin-bottom:16px}
.cta p{color:#B9C6D9;font-size:16px;max-width:52ch}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:24px;font-size:15px;color:#D5E0EF}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--accent)
}
.form-card{
  background:#fff;border-radius:var(--r-card);padding:30px;
  box-shadow:0 24px 60px rgba(6,15,30,.4);color:var(--text)
}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;color:#33455F;margin-bottom:7px}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text);
  background:#FBFCFE;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;height:48px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:104px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(27,79,156,.12)
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);background:#FFFBFB}
.field .err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:6px}
.field.has-error .err-msg{display:block}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-alert{
  display:none;border-radius:var(--r-input);padding:12px 15px;font-size:14px;margin-bottom:16px
}
.form-alert.is-ok{display:block;background:var(--ok-bg);color:var(--ok);border:1px solid #BFE6D2}
.form-alert.is-err{display:block;background:var(--err-bg);color:var(--err);border:1px solid #F3CCC6}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:#B9C6D9;padding:72px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand strong{color:#fff;font-size:18.5px;letter-spacing:.01em}
.footer-about{margin-top:14px;line-height:1.85;max-width:38ch;color:#93A6BF}
.footer h4{color:#fff;font-size:15.5px;margin:0 0 16px;font-weight:700}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#B9C6D9}
.footer-links a:hover{color:#fff}
.footer-contact{display:grid;gap:14px}
.footer-contact li{color:#93A6BF;line-height:1.7}
.footer-contact b{display:block;color:#fff;font-size:13.5px;font-weight:700;margin-bottom:2px}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13.5px;color:#8FA1BA
}
@media(min-width:1024px){
  .footer{padding-top:80px}
  .footer .container{max-width:none;padding-left:calc(var(--sidebar-w) + 40px);padding-right:40px}
  .footer-grid{max-width:1160px}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  padding:14px 22px;border-radius:999px;
  box-shadow:0 14px 30px rgba(249,115,26,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background .2s ease
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--accent-dark);color:#fff}
.float-cta svg{width:17px;height:17px}

.mobile-bar{display:none}
@media(max-width:768px){
  body{padding-bottom:76px}
  .float-cta{display:none}
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:900;
    display:grid;grid-template-columns:1fr 1fr;gap:10px;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    box-shadow:0 -6px 20px rgba(18,32,58,.08);
    transform:translateY(110%);transition:transform .3s ease
  }
  .mobile-bar.is-show{transform:translateY(0)}
  .mobile-bar .btn{padding:13px 10px;font-size:14.5px}
}

/* ============ 响应式 ============ */
@media(max-width:1279px){
  .hero-grid{gap:40px;min-height:auto;padding:56px 0}
  .flow{gap:64px}
  .flow-item{gap:36px}
  .cta-grid{gap:40px;padding:72px 0}
}
@media(max-width:1023px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .strip{grid-template-columns:repeat(2,1fr);gap:18px}
  .proof-grid{grid-template-columns:1fr;gap:34px}
  .footer .container{padding-left:24px;padding-right:24px}
}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:16/10;order:-1}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px}
  .cap-item{grid-template-columns:56px minmax(0,1fr);gap:18px;align-items:start;padding:22px}
  .cap-item .text-link{grid-column:2;margin-top:4px}
  .flow-item{grid-template-columns:1fr;gap:26px}
  .flow-item:nth-child(even) .flow-media{order:0}
  .scene-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:520px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding-top:0}
  .hero-grid{padding:36px 0 48px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-sub{font-size:16.5px}
  .strip{grid-template-columns:1fr 1fr;padding:22px}
  .cap-item{grid-template-columns:1fr;padding:20px}
  .cap-num{font-size:22px}
  .proof-stats{grid-template-columns:1fr 1fr;gap:12px}
  .proof-stat{padding:18px}
  .proof-stat b{font-size:24px}
  .form-card{padding:22px}
  .footer{padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .faq-q{padding:17px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px}
  .mobile-bar .btn{font-size:13.5px;padding:12px 6px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}