/* roulang page: index */
:root{
  --brand-700:#17539B;
  --brand-900:#0F3B72;
  --brand-500:#2E7BD6;
  --brand-100:#E7F0FC;
  --accent-500:#FF6A3D;
  --accent-600:#E85526;
  --mint-500:#10B39A;
  --ink-900:#0E1A2B;
  --ink-600:#4A5B70;
  --ink-400:#8A98AB;
  --line:#E2E9F2;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,36,72,.06), 0 8px 24px rgba(16,36,72,.08);
  --sh-2:0 12px 32px rgba(16,36,72,.12);
  --sh-3:0 20px 48px rgba(16,36,72,.16);
  --nav-h:72px;
  --bs-primary:var(--brand-700);
  --bs-primary-rgb:23,83,155;
  --bs-body-color:var(--ink-600);
  --bs-border-color:var(--line);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-600);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.2;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:20px;font-weight:600;line-height:1.45;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--brand-500);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink-900);}
:focus-visible{outline:3px solid rgba(46,123,214,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:767px){.container{padding:0 16px;}}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-outline,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;
  line-height:1;white-space:nowrap;transition:all .2s ease;border:1px solid transparent;
}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,106,61,.24);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,85,38,.28);}
.btn-accent:active{transform:translateY(0);}
.btn-outline{border-color:var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);}
.btn-soft{background:var(--brand-100);color:var(--brand-700);}
.btn-soft:hover{background:#D8E7FA;color:var(--brand-700);}
.btn-ghost{color:var(--brand-700);padding:0 4px;height:auto;}
.btn-ghost:hover{color:var(--brand-500);}
.btn-ghost span{transition:transform .2s ease;display:inline-block;}
.btn-ghost:hover span{transform:translateX(4px);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}
.btn-accent[disabled],.btn-outline[disabled]{opacity:.45;pointer-events:none;transform:none;box-shadow:none;}

/* ---------- 标签 / 徽章 ---------- */
.badge-cat{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;}
.badge-limit{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;}
.status-online{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-700);}
.status-online i{width:7px;height:7px;border-radius:50%;background:var(--mint-500);box-shadow:0 0 0 3px rgba(16,179,154,.16);}
.dot-mint{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--mint-500);margin-right:8px;flex:0 0 auto;}

/* ---------- 顶部工具条 ---------- */
.topbar{background:var(--brand-100);border-bottom:1px solid var(--line);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px;}
.topbar-notice{display:flex;align-items:center;gap:8px;color:var(--brand-700);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar-notice i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:0 0 auto;}
.topbar-right{display:flex;align-items:center;gap:20px;flex:0 0 auto;}
.topbar-right a{color:var(--brand-700);}
.topbar-right a:hover{color:var(--brand-500);}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:60;}
.mainnav{
  position:sticky;top:0;z-index:60;background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,36,72,.05),0 6px 20px rgba(16,36,72,.06);
}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-700);color:#fff;font-size:17px;font-weight:700;letter-spacing:0;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:.2px;}
.brand:hover .brand-text{color:var(--brand-700);}
.nav-search{
  flex:1 1 auto;max-width:560px;min-width:220px;display:flex;align-items:center;gap:8px;
  height:44px;padding:0 6px 0 16px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:#F8FAFD;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(46,123,214,.15);}
.nav-search svg{flex:0 0 auto;color:var(--ink-400);}
.nav-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;height:40px;}
.nav-search input::placeholder{color:var(--ink-400);}
.search-btn{
  height:34px;padding:0 18px;border-radius:var(--r-pill);background:var(--brand-700);color:#fff;
  font-size:14px;font-weight:600;transition:background-color .2s ease;
}
.search-btn:hover{background:var(--brand-500);}
.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.nav-link{display:inline-flex;align-items:center;height:38px;padding:0 12px;border-radius:8px;font-size:15px;color:var(--ink-600);font-weight:500;}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700);}
.nav-link.active{color:var(--brand-700);font-weight:700;background:var(--brand-100);}
.nav-cta{margin-left:4px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;flex:0 0 auto;}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;transition:background .2s ease;}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .2s ease;}
.nav-toggle i::before{top:-6px;}
.nav-toggle i::after{top:6px;}
.nav-toggle.active i{background:transparent;}
.nav-toggle.active i::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.active i::after{transform:translateY(-6px) rotate(-45deg);}

.catbar-wrap{border-top:1px solid var(--line);background:var(--surface);}
.catbar{display:flex;align-items:center;gap:28px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.catbar::-webkit-scrollbar{display:none;}
.cat-item{
  position:relative;flex:0 0 auto;padding:12px 0;font-size:14px;color:var(--ink-600);white-space:nowrap;
}
.cat-item::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px 3px 0 0;background:transparent;transition:background-color .2s ease;}
.cat-item:hover{color:var(--brand-700);}
.cat-item.active{color:var(--brand-700);font-weight:700;}
.cat-item.active::after{background:var(--brand-700);}

/* ---------- 倒计时条 ---------- */
.cd-bar{position:sticky;top:var(--nav-h);z-index:50;background:var(--brand-900);color:#fff;}
.cd-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 24px;flex-wrap:wrap;}
.cd-label{display:flex;align-items:center;gap:10px;font-size:15px;color:rgba(255,255,255,.92);}
.cd-tag{height:22px;padding:0 9px;border-radius:6px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;}
.cd-clock{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.cd-unit{display:flex;flex-direction:column;align-items:center;gap:4px;}
.cd-num{
  width:40px;height:48px;border-radius:8px;background:#0B2F5C;color:var(--accent-500);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
  font-variant-numeric:tabular-nums;border:1px solid rgba(255,255,255,.10);
}
.cd-cap{font-size:12px;color:rgba(255,255,255,.68);line-height:1;}
.cd-colon{color:rgba(255,255,255,.45);font-size:18px;font-weight:700;align-self:center;margin-top:-14px;}

/* ---------- Hero ---------- */
.hero{background:var(--surface);border-bottom:1px solid var(--line);}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:72px 24px;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;}
.hero h1{margin:18px 0 16px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-600);max-width:560px;}
.hero-actions{display:flex;align-items:center;gap:18px;margin-top:28px;flex-wrap:wrap;}
.trust-list{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);}
.trust-list li{display:flex;align-items:center;font-size:14px;color:var(--ink-600);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1);}
.hero-float{
  position:absolute;left:-18px;bottom:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.hero-float b{display:block;font-size:20px;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-float span{font-size:12px;color:var(--ink-400);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{margin-bottom:12px;}
.section-sub{font-size:16px;color:var(--ink-600);}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-500);letter-spacing:1px;margin-bottom:12px;}

/* ---------- 活动卖点 ---------- */
.feature-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.feature-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.feature-card h3{font-size:18px;margin-bottom:8px;}
.feature-card p{font-size:14px;line-height:1.75;color:var(--ink-600);}
.feature-hero{
  position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  background:var(--brand-900);box-shadow:var(--sh-1);display:flex;flex-direction:column;justify-content:flex-end;
  min-height:320px;
}
.feature-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.feature-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,59,114,.15) 20%,rgba(15,59,114,.88) 100%);}
.feature-hero-body{position:relative;z-index:2;padding:28px;color:#fff;}
.feature-hero-body h3{color:#fff;font-size:22px;margin-bottom:10px;}
.feature-hero-body p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.75;}
.feature-hero-body .badge-limit{margin-bottom:14px;}

/* ---------- 亮点图墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.wall-card{
  position:relative;border-radius:var(--r-md);overflow:hidden;height:190px;border:1px solid var(--line);
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;background:var(--brand-100);
}
.wall-card:nth-child(1),.wall-card:nth-child(5){grid-column:span 2;}
.wall-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.wall-card:hover img{transform:scale(1.03);}
.wall-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,26,43,0) 38%,rgba(14,26,43,.82) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:16px;}
.wall-mask h3{color:#fff;font-size:16px;font-weight:600;}
.wall-mask span{font-size:12px;color:rgba(255,255,255,.78);margin-top:2px;}
.wall-tag{position:absolute;top:12px;left:12px;height:22px;padding:0 9px;border-radius:6px;background:rgba(255,255,255,.94);color:var(--brand-700);font-size:12px;font-weight:700;display:inline-flex;align-items:center;}
.wall-tag.hot{background:var(--accent-500);color:#fff;}

/* ---------- 报名 / 领取 ---------- */
.signup{background:var(--brand-100);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.signup-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}
.signup-copy h2{margin-bottom:16px;}
.signup-copy p{font-size:16px;color:var(--ink-600);}
.signup-points{margin-top:26px;display:grid;gap:14px;}
.signup-points li{display:flex;gap:12px;font-size:14px;color:var(--ink-600);line-height:1.7;}
.signup-points b{color:var(--ink-900);font-weight:600;}
.signup-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-2);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--ink-900);}
.field input,.field select{
  height:44px;border:1px solid var(--line);border-radius:var(--r-md);padding:0 14px;background:#F8FAFD;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input:focus,.field select:focus{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(46,123,214,.15);}
.field input::placeholder{color:var(--ink-400);}
.check-line{display:flex;align-items:flex-start;gap:10px;margin:20px 0 22px;font-size:13px;color:var(--ink-600);line-height:1.6;}
.check-line input{width:18px;height:18px;flex:0 0 auto;margin-top:2px;accent-color:var(--brand-700);}
.form-note{margin-top:14px;font-size:12px;color:var(--ink-400);text-align:center;}

/* ---------- 最新信息 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.filter-chip{
  height:34px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  color:var(--ink-600);font-size:14px;display:inline-flex;align-items:center;transition:all .2s ease;
}
.filter-chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
.filter-chip.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;font-weight:600;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.news-title{font-size:18px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a{color:var(--ink-900);}
.news-title a:hover{color:var(--brand-700);}
.news-summary{font-size:14px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px;}
.news-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-foot time{font-size:13px;color:var(--ink-400);}
.link-arrow{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px;}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover span{transform:translateX(3px);}
.empty-state{
  grid-column:1 / -1;background:var(--brand-100);border:1px dashed #C6DAF3;border-radius:var(--r-md);
  padding:48px 24px;text-align:center;
}
.empty-state .empty-icon{width:52px;height:52px;border-radius:14px;background:#fff;color:var(--brand-700);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:10px;}
.empty-state a{font-size:14px;font-weight:600;color:var(--brand-700);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item > summary{
  position:relative;list-style:none;cursor:pointer;padding:20px 40px 20px 0;
  font-size:16px;font-weight:600;color:var(--ink-900);transition:color .2s ease;
}
.faq-item > summary::-webkit-details-marker{display:none;}
.faq-item > summary:hover{color:var(--brand-700);}
.faq-item > summary::before,
.faq-item > summary::after{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:2px;border-radius:2px;
  background:var(--brand-700);transition:transform .2s ease;
}
.faq-item > summary::after{transform:rotate(90deg);}
.faq-item[open] > summary::after{transform:rotate(0deg);}
.faq-body{padding:0 40px 20px 16px;border-left:3px solid var(--brand-500);margin-left:0;font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col a:hover{color:#fff;}
.brand-light .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.brand-light .brand-text{color:#fff;}
.brand-light:hover .brand-text{color:#fff;}
.footer-desc{margin-top:16px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px;}
.footer-links{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 28px;font-size:13px;
}
.footer-links a{color:rgba(255,255,255,.68);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 提示 ---------- */
.toast-tip{
  position:fixed;right:24px;bottom:24px;z-index:200;max-width:320px;
  background:var(--ink-900);color:#fff;font-size:14px;line-height:1.6;
  padding:14px 18px;border-radius:var(--r-md);box-shadow:var(--sh-3);
  opacity:0;transform:translateY(10px);pointer-events:none;transition:all .25s ease;
}
.toast-tip.show{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-inner{gap:40px;padding:64px 24px;}
  .section{padding:76px 0;}
}
@media (max-width:991px){
  :root{--nav-h:64px;}
  .mainnav-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px;}
  .nav-toggle{display:inline-flex;order:3;}
  .nav-search{order:4;flex-basis:100%;max-width:none;margin-top:2px;}
  .nav-links{
    order:5;flex-basis:100%;display:none;flex-direction:column;align-items:stretch;gap:2px;
    border-top:1px solid var(--line);padding-top:10px;margin-top:6px;
  }
  .nav-links.open{display:flex;}
  .nav-link{height:44px;justify-content:flex-start;padding:0 12px;}
  .nav-cta{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 24px;}
  .hero-float{left:16px;bottom:-16px;}
  .feature-layout{grid-template-columns:1fr;}
  .wall{grid-template-columns:repeat(2,1fr);}
  .signup-layout{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
  .footer-col{padding:0 20px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:0;}
  .footer-col:nth-child(even){padding-right:0;}
}
@media (max-width:767px){
  .section{padding:52px 0;}
  .topbar-notice{display:none;}
  .topbar-inner{justify-content:flex-end;}
  .hero-inner{padding:40px 16px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-lg{width:100%;}
  .cd-inner{padding:12px 16px;gap:12px;}
  .cd-num{width:32px;height:40px;font-size:17px;}
  .cd-colon{margin-top:-12px;}
  .wall{grid-template-columns:1fr;}
  .wall-card:nth-child(1),.wall-card:nth-child(5){grid-column:span 1;}
  .wall-card{height:180px;}
  .feature-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .faq-body{padding-right:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .signup-panel{padding:20px;}
  .toast-tip{left:16px;right:16px;bottom:16px;max-width:none;}
}

/* roulang page: article */
:root{
  --brand-700:#17539B;
  --brand-900:#0F3B72;
  --brand-500:#2E7BD6;
  --brand-100:#E7F0FC;
  --accent-500:#FF6A3D;
  --accent-600:#E85526;
  --mint-500:#10B39A;
  --ink-900:#0E1A2B;
  --ink-600:#4A5B70;
  --ink-400:#8A98AB;
  --line:#E2E9F2;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,36,72,.06), 0 8px 24px rgba(16,36,72,.08);
  --sh-2:0 12px 32px rgba(16,36,72,.12);
  --sh-3:0 20px 48px rgba(16,36,72,.16);
  --t:.2s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t),background-color var(--t)}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:rgba(46,123,214,.18)}
:focus-visible{outline:3px solid rgba(46,123,214,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ============ 顶部导航 ============ */
.site-header{position:relative;z-index:1000}
.mainnav{position:sticky;top:0;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(16,36,72,.05)}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-700);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;letter-spacing:0;
  box-shadow:0 4px 12px rgba(23,83,155,.28);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;
  padding:5px 5px 5px 16px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--r-pill);color:var(--ink-400);transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.nav-search:focus-within{background:var(--surface);border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(46,123,214,.15)}
.nav-search svg{flex:0 0 auto}
.nav-search input{
  flex:1 1 auto;min-width:0;height:34px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-400)}
.search-btn{
  flex:0 0 auto;height:36px;padding:0 20px;border:0;border-radius:var(--r-pill);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color var(--t),transform var(--t);
}
.search-btn:hover{background:var(--brand-900)}
.search-btn:active{transform:translateY(1px)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  display:inline-block;padding:8px 12px;border-radius:var(--r-sm);font-size:15px;
  color:var(--ink-600);white-space:nowrap;transition:color var(--t),background-color var(--t);
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:600;background:var(--brand-100)}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;
  border:1px solid var(--brand-700);border-radius:10px;background:transparent;
  color:var(--brand-700);font-size:15px;font-weight:600;transition:background-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-outline:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);content:"";position:relative;
}
.nav-toggle i::before{position:absolute;top:-6px}
.nav-toggle i::after{position:absolute;top:6px}
.catbar-wrap{border-top:1px solid var(--line);background:var(--surface)}
.catbar{display:flex;gap:6px;overflow-x:auto;padding:9px 0 11px;scrollbar-width:none}
.catbar::-webkit-scrollbar{display:none}
.cat-item{
  position:relative;flex:0 0 auto;padding:6px 10px;border-radius:8px;font-size:14px;
  color:var(--ink-600);white-space:nowrap;transition:color var(--t),background-color var(--t);
}
.cat-item:hover{color:var(--brand-700);background:var(--brand-100)}
.cat-item.active{color:var(--brand-700);font-weight:600}
.cat-item.active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:-11px;height:3px;border-radius:3px;background:var(--brand-500);
}

/* ============ 页面主体 ============ */
.page-wrap{padding:28px 0 72px}
.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-400);margin-bottom:20px;
}
.breadcrumb-bar a{color:var(--ink-600)}
.breadcrumb-bar a:hover{color:var(--brand-700)}
.breadcrumb-bar .sep{color:#C6D2E2}
.breadcrumb-bar .current{color:var(--ink-400);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:var(--r-sm);
  background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.section-kicker i{width:6px;height:6px;border-radius:50%;background:var(--mint-500);display:block}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:28px;align-items:start}

.article-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:40px 44px 44px;overflow:hidden;
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:28px}
.article-head h1{font-size:clamp(26px,3.3vw,36px);line-height:1.34;letter-spacing:.2px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--ink-400)}
.badge-cat{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;
  background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CBD6E5}
.meta-item{color:var(--ink-400)}

.article-body{font-size:17px;line-height:1.9;color:var(--ink-600);overflow-wrap:break-word}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:22px;line-height:1.5;margin:1.9em 0 .85em;padding-left:12px;
  border-left:3px solid var(--brand-500);scroll-margin-top:150px;
}
.article-body h3{font-size:19px;margin:1.6em 0 .7em;scroll-margin-top:150px}
.article-body h4{font-size:17px;margin:1.4em 0 .6em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body ul li{list-style:disc;margin:.35em 0}
.article-body ol li{list-style:decimal;margin:.35em 0}
.article-body blockquote{
  margin:1.4em 0;padding:16px 18px;background:var(--brand-100);border-left:3px solid var(--brand-500);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-600);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.4em auto;box-shadow:var(--sh-1)}
.article-body figure{margin:1.5em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--brand-100);color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brand-700);border-bottom:1px solid rgba(46,123,214,.35)}
.article-body a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500)}
.article-body code{background:var(--brand-100);color:var(--brand-900);padding:2px 6px;border-radius:6px;font-size:15px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

.empty-state{
  text-align:center;padding:56px 24px;background:var(--brand-100);border-radius:var(--r-md);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:14px;background:var(--surface);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:24px;font-weight:700;box-shadow:var(--sh-1);
}
.empty-state h2{font-size:20px;margin-bottom:8px}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:20px}
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border:0;
  border-radius:10px;background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary-x:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,61,.28)}
.btn-primary-x:active{transform:translateY(0)}

/* 上一篇 / 下一篇 */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:34px}
.post-nav-card{
  display:block;padding:18px 20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CDDDF3;color:inherit}
.pn-label{display:block;font-size:13px;color:var(--brand-700);font-weight:600;margin-bottom:6px}
.pn-title{display:block;font-size:16px;color:var(--ink-900);font-weight:600;line-height:1.6;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}

/* 标签 */
.tag-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:28px}
.tag-label{font-size:14px;color:var(--ink-400)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);color:var(--ink-600);font-size:13.5px;
  transition:color var(--t),border-color var(--t),background-color var(--t);
}
.tag:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--brand-100)}

/* 相关推荐 */
.related-sec{margin-top:52px}
.related-sec > h2{font-size:26px;margin-bottom:6px}
.related-sub{font-size:14px;color:var(--ink-400);margin-bottom:22px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);color:inherit;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CDDDF3;color:inherit}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.rel-body h3{font-size:17px;line-height:1.55;margin-bottom:8px;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.rel-body p{font-size:14px;color:var(--ink-400);line-height:1.7;margin-bottom:14px;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.rel-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-700)}
.rel-card:hover .rel-more{color:var(--brand-500)}

/* 侧栏 */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 20px 22px;box-shadow:var(--sh-1)}
.aside-title{
  font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;
}
.aside-title::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--brand-500)}
.toc-list li + li{margin-top:2px}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-600);line-height:1.6;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{background:var(--brand-100);color:var(--brand-700)}
.toc-list a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
.rec-list li + li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.rec-list a{display:block;color:inherit}
.rec-title{display:block;font-size:14.5px;color:var(--ink-900);line-height:1.6;font-weight:500;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;transition:color var(--t)}
.rec-list a:hover .rec-title{color:var(--brand-700)}
.rec-meta{display:flex;align-items:center;gap:8px;margin-top:8px;font-size:12.5px;color:var(--ink-400)}
.rec-meta .mini-badge{background:var(--brand-100);color:var(--brand-700);padding:2px 8px;border-radius:6px;font-weight:600}
.back-btn{width:100%;justify-content:center}

/* 侧栏小 CTA */
.aside-cta{
  background:var(--brand-900);border-radius:var(--r-lg);padding:22px 20px;color:rgba(255,255,255,.86);
  box-shadow:var(--sh-2);
}
.aside-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.aside-cta p{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.75);margin-bottom:16px}
.aside-cta .btn-primary-x{width:100%}
.aside-cta .cta-note{display:block;margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.6)}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:60px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,.78);font-size:14px}
.footer-col ul li a:hover{color:#fff}
.brand-light .brand-mark{background:#fff;color:var(--brand-900);box-shadow:none}
.brand-light .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin-top:16px;max-width:320px}
.status-online{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.8)}
.status-online i{width:8px;height:8px;border-radius:50%;background:var(--mint-500);box-shadow:0 0 0 4px rgba(16,179,154,.18);display:block}
.footer-links{
  display:flex;flex-wrap:wrap;gap:8px 22px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-links a{color:rgba(255,255,255,.72);font-size:13.5px}
.footer-links a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;padding-top:22px;font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:22px}
  .article-main{padding:34px 32px 36px}
}
@media (max-width:991px){
  .mainnav-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px}
  .nav-toggle{display:inline-flex;order:2;margin-left:auto}
  .nav-search{order:3;max-width:none;width:100%;flex:1 0 100%}
  .nav-links{
    order:4;display:none;width:100%;flex-direction:column;align-items:stretch;
    gap:4px;padding-top:10px;border-top:1px solid var(--line);margin-left:0;
  }
  .nav-links.open{display:flex}
  .nav-link{padding:11px 12px}
  .nav-cta{display:none !important}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;flex-direction:column}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .page-wrap{padding:20px 0 52px}
  .article-main{padding:24px 18px 26px;border-radius:var(--r-md)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:19px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .tag-list{gap:8px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{justify-content:flex-start}
  .breadcrumb-bar .current{max-width:180px}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .article-main{padding:20px 15px 22px}
  .article-head h1{font-size:23px}
}

/* roulang page: category1 */
:root{
  --brand-700:#17539B; --brand-900:#0F3B72; --brand-500:#2E7BD6; --brand-100:#E7F0FC;
  --accent-500:#FF6A3D; --accent-600:#E85526; --mint-500:#10B39A;
  --ink-900:#0E1A2B; --ink-600:#4A5B70; --ink-400:#8A98AB;
  --line:#E2E9F2; --bg:#F4F7FB; --surface:#FFFFFF;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,36,72,.06), 0 8px 24px rgba(16,36,72,.08);
  --sh-2:0 12px 32px rgba(16,36,72,.12);
  --sh-3:0 20px 48px rgba(16,36,72,.16);
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--ink-600);
  --bs-link-color:var(--brand-500);
  --bs-link-hover-color:var(--brand-700);
  --bs-border-color:var(--line);
  --bs-primary:var(--brand-700);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
button,input,select{font-family:inherit;font-size:inherit}
ul{list-style:none}
:focus-visible{outline:3px solid rgba(46,123,214,.4);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:575px){.container{padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.mainnav{position:relative;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(16,36,72,.06)}
.mainnav-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand-700);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:18px;letter-spacing:.02em;
}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.brand:hover .brand-text{color:var(--brand-700)}

.nav-search{
  display:flex;align-items:center;gap:10px;flex:1 1 auto;max-width:560px;height:48px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px 4px 4px 18px;color:var(--ink-400);
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(46,123,214,.15)}
.nav-search svg{flex:none;color:var(--ink-400)}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  color:var(--ink-900);font-size:15px;
}
.nav-search input::placeholder{color:var(--ink-400)}
.search-btn{
  flex:none;height:38px;padding:0 20px;border:0;border-radius:var(--r-pill);
  background:var(--brand-700);color:#fff;font-weight:600;font-size:15px;cursor:pointer;
  transition:background-color .2s ease, transform .2s ease;
}
.search-btn:hover{background:var(--brand-500)}
.search-btn:active{transform:translateY(1px)}

.nav-links{display:flex;align-items:center;gap:4px;flex:none}
.nav-link{
  padding:8px 12px;border-radius:var(--r-sm);color:var(--ink-600);
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:background-color .2s ease, color .2s ease;
}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-link.active{color:var(--brand-700);font-weight:700}

.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:1px solid var(--brand-700);
  color:var(--brand-700);background:transparent;font-weight:600;font-size:15px;
  cursor:pointer;transition:background-color .2s ease, color .2s ease, transform .2s ease;
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-outline:active{transform:translateY(1px)}

.nav-toggle{
  display:none;width:44px;height:44px;flex:none;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-sm);cursor:pointer;
}
.nav-toggle i{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:background .2s ease}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;
  background:var(--ink-900);transition:transform .2s ease, top .2s ease;
}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.nav-toggle[aria-expanded="true"] i{background:transparent}
.nav-toggle[aria-expanded="true"] i::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::after{top:0;transform:rotate(-45deg)}

.catbar-wrap{border-top:1px solid var(--line);background:#fff}
.catbar{display:flex;align-items:center;overflow-x:auto;scrollbar-width:none;padding:4px 0}
.catbar::-webkit-scrollbar{display:none}
.cat-item{
  padding:12px 2px;margin-right:28px;white-space:nowrap;font-size:15px;
  color:var(--ink-600);border-bottom:3px solid transparent;
  transition:color .2s ease, border-color .2s ease;
}
.cat-item:hover{color:var(--brand-700)}
.cat-item.active{color:var(--brand-700);font-weight:700;border-bottom-color:var(--brand-700)}

/* ============ 通用区块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (max-width:991px){.section{padding:64px 0}.section-tight{padding:48px 0}}
@media (max-width:575px){.section{padding:48px 0}.section-tight{padding:40px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.3}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-500);letter-spacing:.08em;margin-bottom:10px}
.section-note{max-width:540px;margin:0;font-size:15px;color:var(--ink-400);line-height:1.75}
@media (max-width:767px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .section-head h2{font-size:24px}
}

/* ============ Hero ============ */
.page-hero{background:var(--surface);border-bottom:1px solid var(--line);padding:36px 0 72px}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-400);margin-bottom:28px}
.breadcrumb-line a{color:var(--ink-600)}
.breadcrumb-line a:hover{color:var(--brand-700)}
.breadcrumb-line .sep{color:var(--ink-400)}
.breadcrumb-line .current{color:var(--ink-400)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(28px,4vw,42px);line-height:1.22;font-weight:700;margin-bottom:18px}
.hero-title em{font-style:normal;color:var(--brand-700)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-600);max-width:560px;margin-bottom:26px}
.hero-search{
  display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:5px 5px 5px 18px;max-width:520px;height:52px;color:var(--ink-400);
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.hero-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(46,123,214,.15)}
.hero-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;color:var(--ink-900);font-size:15px}
.hero-search input::placeholder{color:var(--ink-400)}
.hero-search .search-btn{height:42px;padding:0 24px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600)}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--mint-500);flex:none;box-shadow:0 0 0 4px rgba(16,179,154,.14)}
.hero-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line);aspect-ratio:4/3;background:var(--brand-100)}
.hero-media img{width:100%;height:100%;object-fit:cover}
@media (max-width:991px){
  .page-hero{padding:26px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{aspect-ratio:16/10}
}
@media (max-width:575px){
  .hero-search{height:48px;padding-left:14px}
  .hero-search .search-btn{height:38px;padding:0 16px}
}

/* ============ 数据条 ============ */
.stat-strip{background:var(--surface);border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.stat-item{border-left:3px solid var(--brand-100);padding-left:16px}
.stat-item:first-child{border-left-color:var(--brand-700)}
.stat-num{
  font-size:30px;font-weight:700;color:var(--brand-900);line-height:1.2;
  font-variant-numeric:tabular-nums;display:block;margin-bottom:6px;
}
.stat-label{font-size:14px;color:var(--ink-400);line-height:1.6}
@media (max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px 18px;padding:26px 0}
  .stat-num{font-size:24px}
}

/* ============ 卡片栅格 ============ */
.act-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.act-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3E0F1}
.act-media{position:relative;overflow:hidden;background:var(--brand-100);aspect-ratio:16/10}
.act-card.wide .act-media{aspect-ratio:21/9}
.act-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.act-card:hover .act-media img{transform:scale(1.03)}
.badge-corner{position:absolute;top:12px;left:12px}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;background:var(--brand-100);color:var(--brand-700);
  line-height:1.5;
}
.badge-hot{background:var(--accent-500);color:#fff}
.badge-live{background:#E6F7F4;color:#0B7A69}
.badge-live i{width:6px;height:6px;border-radius:50%;background:var(--mint-500);display:inline-block}
.act-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.act-body h3{font-size:20px;font-weight:600;line-height:1.4}
.act-desc{
  margin:0;font-size:15px;color:var(--ink-600);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.link-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-700);
  transition:gap .2s ease, color .2s ease;
}
.link-arrow:hover{gap:11px;color:var(--brand-500)}
.cta-card{
  height:100%;border-radius:var(--r-md);background:var(--brand-900);color:rgba(255,255,255,.85);
  padding:30px;display:flex;flex-direction:column;justify-content:center;gap:14px;
  box-shadow:var(--sh-1);
}
.cta-card h3{color:#fff;font-size:21px;line-height:1.4}
.cta-card p{margin:0;font-size:15px;line-height:1.75;color:rgba(255,255,255,.82)}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border:0;border-radius:10px;cursor:pointer;
  background:var(--accent-500);color:#fff;font-weight:600;font-size:15px;
  transition:background-color .2s ease, transform .2s ease, box-shadow .2s ease;
  align-self:flex-start;
}
.btn-solid:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,85,38,.28)}
.btn-solid:active{transform:translateY(0)}
.btn-solid[disabled],.btn-solid.disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease;
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-num{
  width:38px;height:38px;border-radius:10px;background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-weight:700;font-size:15px;margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-item p{margin:0;font-size:15px;color:var(--ink-600);line-height:1.75}
@media (max-width:991px){.steps{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:575px){.steps{grid-template-columns:1fr}}

/* ============ CTA 横条 ============ */
.cta-band{
  background:var(--brand-100);border:1px solid #D3E0F1;border-radius:var(--r-lg);
  padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;color:var(--ink-600);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
@media (max-width:991px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;gap:20px}
  .cta-band h2{font-size:22px}
}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-button{
  background:transparent;color:var(--ink-900);font-weight:600;font-size:16px;
  padding:20px 46px 20px 0;box-shadow:none;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(46,123,214,.35);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  width:22px;height:22px;background-size:16px;background-position:center;background-repeat:no-repeat;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317539B' stroke-width='2.4' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
  transition:transform .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(90deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317539B' stroke-width='2.4' stroke-linecap='round'%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-body{
  padding:0 0 22px 16px;border-left:3px solid var(--brand-700);
  font-size:15px;color:var(--ink-600);line-height:1.85;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px;margin:0;padding:0}
.footer-col a{color:rgba(255,255,255,.82);font-size:15px}
.footer-col a:hover{color:#fff}
.brand-light .brand-text{color:#fff}
.brand-light .brand-mark{background:var(--brand-500)}
.footer-desc{margin:16px 0 0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px}
.status-online{display:inline-flex;align-items:center;gap:8px;font-size:15px;color:rgba(255,255,255,.82)}
.status-online i{width:8px;height:8px;border-radius:50%;background:var(--mint-500);display:inline-block}
.footer-links{
  display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:44px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  margin-top:22px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .site-footer{padding:48px 0 24px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-desc{max-width:none}
}

/* ============ 移动端导航 ============ */
@media (max-width:991px){
  .mainnav-inner{flex-wrap:wrap;gap:12px;padding:12px 0}
  .nav-search{order:3;flex:1 0 100%;max-width:none;margin-bottom:4px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-cta{display:none}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;z-index:1040;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-top:1px solid var(--line);box-shadow:var(--sh-2);
    padding:10px 16px 16px;
  }
  .nav-links.open{display:flex}
  .nav-link{padding:12px 14px;border-radius:var(--r-sm)}
  .nav-link.active{background:var(--brand-100)}
}
@media (max-width:575px){
  .brand-text{font-size:17px}
  .search-btn{padding:0 16px}
  .cta-actions .btn-solid,.cta-actions .btn-outline{width:100%}
}

/* roulang page: category2 */
:root{
  --brand-700:#17539B;
  --brand-900:#0F3B72;
  --brand-500:#2E7BD6;
  --brand-100:#E7F0FC;
  --accent-500:#FF6A3D;
  --accent-600:#E85526;
  --mint-500:#10B39A;
  --ink-900:#0E1A2B;
  --ink-600:#4A5B70;
  --ink-400:#8A98AB;
  --line:#E2E9F2;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,36,72,.06),0 8px 24px rgba(16,36,72,.08);
  --sh-2:0 12px 32px rgba(16,36,72,.12);
  --sh-3:0 20px 48px rgba(16,36,72,.16);
  --ease:.2s ease;
  --bs-primary:#17539B;
  --bs-primary-rgb:23,83,155;
  --bs-body-color:#4A5B70;
  --bs-border-color:#E2E9F2;
  --bs-border-radius:12px;
  --bs-link-color:#2E7BD6;
  --bs-link-hover-color:#17539B;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:3px solid rgba(46,123,214,.45);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-100);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:14px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--mint-500);display:inline-block;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;}
.section-head p{margin-top:12px;color:var(--ink-600);font-size:16px;}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--brand-100);
  font-size:13px;
  color:var(--brand-700);
  height:36px;
  display:flex;
  align-items:center;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.topbar-note{
  display:flex;align-items:center;gap:8px;
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.topbar-note strong{font-weight:600;color:var(--brand-900);}
.topbar-side{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.topbar-side a{color:var(--brand-700);font-weight:500;}
.topbar-side a:hover{color:var(--brand-900);text-decoration:underline;}
.status-online{display:inline-flex;align-items:center;gap:7px;color:var(--ink-600);}
.status-online i{
  width:8px;height:8px;border-radius:50%;background:var(--mint-500);display:inline-block;
  box-shadow:0 0 0 3px rgba(16,179,154,.16);
}
@media (max-width:767.98px){
  .topbar-note{display:none;}
  .topbar-inner{justify-content:flex-end;}
}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;}
.mainnav{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,36,72,.04);
}
.mainnav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  padding-top:14px;
  padding-bottom:14px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:var(--r-md);
  background:var(--brand-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:19px;
  box-shadow:0 4px 12px rgba(23,83,155,.28);
}
.brand-text{
  font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:0;
  white-space:nowrap;
}
.brand-light .brand-mark{background:rgba(255,255,255,.14);color:#fff;box-shadow:none;}
.brand-light .brand-text{color:#fff;}

.nav-search{
  position:relative;
  flex:1 1 480px;
  max-width:560px;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 6px 0 16px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(46,123,214,.15);
}
.nav-search svg{color:var(--ink-400);flex:0 0 auto;}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-400);}
.search-btn{
  flex:0 0 auto;
  height:34px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--brand-700);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background-color var(--ease),transform var(--ease);
}
.search-btn:hover{background:var(--brand-900);}
.search-btn:active{transform:translateY(1px);}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-600);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-100);}
.nav-link.active{color:var(--brand-700);background:var(--brand-100);font-weight:600;}

.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;
  border:1px solid var(--brand-700);
  border-radius:10px;
  color:var(--brand-700);
  font-size:15px;font-weight:600;
  background:transparent;
  transition:background-color var(--ease),color var(--ease),transform var(--ease);
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-900);}
.btn-outline:active{transform:translateY(1px);}

.nav-toggle{
  display:none;
  width:44px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  align-items:center;justify-content:center;
  flex-direction:column;gap:4px;
}
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle i{position:relative;}
.nav-toggle i::before{position:absolute;top:-6px;left:0;}
.nav-toggle i::after{position:absolute;top:6px;left:0;}

.catbar-wrap{border-top:1px solid var(--line);background:#fff;}
.catbar{
  display:flex;align-items:center;gap:6px;
  overflow-x:auto;
  padding:0 0 1px;
  scrollbar-width:none;
}
.catbar::-webkit-scrollbar{display:none;}
.cat-item{
  position:relative;
  display:inline-flex;align-items:center;
  height:46px;padding:0 14px;
  font-size:14px;font-weight:500;color:var(--ink-600);
  white-space:nowrap;
}
.cat-item::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:transparent;transition:background-color var(--ease);
}
.cat-item:hover{color:var(--brand-700);}
.cat-item.active{color:var(--brand-700);font-weight:600;}
.cat-item.active::after{background:var(--brand-700);}

@media (max-width:991.98px){
  .mainnav-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;row-gap:8px;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;margin-top:4px;}
  .nav-links{
    display:none;
    order:4;flex:1 1 100%;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:8px 0 4px;
    border-top:1px solid var(--line);
  }
  .nav-links.open{display:flex;}
  .nav-link{height:44px;justify-content:flex-start;border-radius:var(--r-sm);}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
}
@media (min-width:992px) and (max-width:1199.98px){
  .brand-text{font-size:16px;}
  .nav-search{max-width:400px;flex-basis:360px;}
}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb-nav{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:14px 0;font-size:13px;color:var(--ink-400);
}
.breadcrumb-nav a{color:var(--ink-600);}
.breadcrumb-nav a:hover{color:var(--brand-500);}
.breadcrumb-nav span.sep{color:var(--ink-400);}
.breadcrumb-nav .current{color:var(--ink-400);}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  background:linear-gradient(180deg,#FFFFFF 0%,#F4F7FB 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  overflow:hidden;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;
  margin-bottom:18px;
}
.hero-tag em{
  font-style:normal;color:var(--accent-500);font-weight:700;
}
.cat-hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.2;
  font-weight:700;
  max-width:16em;
}
.cat-hero .hero-sub{
  margin-top:18px;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-600);
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:20px;
  margin-top:30px;padding-top:24px;border-top:1px solid var(--line);
}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.hero-trust i{
  width:8px;height:8px;border-radius:50%;background:var(--mint-500);flex:0 0 auto;
  box-shadow:0 0 0 3px rgba(16,179,154,.16);
}
.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  aspect-ratio:4/3;
  background:var(--brand-100);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual .visual-badge{
  position:absolute;left:18px;top:18px;
  background:var(--accent-500);
  color:#fff;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:var(--r-pill);
}
.hero-visual .visual-note{
  position:absolute;left:0;right:0;bottom:0;
  background:linear-gradient(180deg,rgba(15,59,114,0) 0%,rgba(15,59,114,.88) 100%);
  color:rgba(255,255,255,.94);
  padding:44px 20px 18px;
  font-size:14px;
}
@media (max-width:991.98px){
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero{padding:40px 0 48px;}
}

/* ============ 按钮 ============ */
.btn-brand,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:10px;
  font-size:16px;font-weight:600;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-brand{
  background:var(--accent-500);color:#fff;box-shadow:0 8px 20px rgba(255,106,61,.28);
}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-soft{
  background:#fff;color:var(--brand-700);border:1px solid var(--line);
}
.btn-soft:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100);}
.btn-ghost{color:var(--brand-700);padding:0 6px;height:auto;}
.btn-ghost .arrow{transition:transform var(--ease);display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ============ KPI 数据条 ============ */
.kpi-strip{
  background:var(--brand-900);
  color:#fff;
  border-radius:var(--r-lg);
  padding:26px 28px;
  margin-top:-34px;
  position:relative;
  z-index:2;
  box-shadow:var(--sh-2);
}
.kpi-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.kpi-item{
  border-left:1px solid rgba(255,255,255,.14);
  padding-left:20px;
}
.kpi-item:first-child{border-left:0;padding-left:0;}
.kpi-num{
  font-size:28px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.kpi-num em{font-style:normal;color:var(--accent-500);font-size:18px;margin-left:2px;}
.kpi-label{font-size:13px;color:rgba(255,255,255,.72);margin-top:6px;}
@media (max-width:767.98px){
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .kpi-item:nth-child(3){border-left:0;padding-left:0;}
  .kpi-num{font-size:23px;}
}

/* ============ 主区布局 ============ */
.gift-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;
  align-items:start;
}
@media (max-width:991.98px){
  .gift-layout{grid-template-columns:1fr;}
}

/* ============ 横向列表式条目 ============ */
.gift-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.gift-row{
  display:flex;
  gap:22px;
  padding:22px 24px;
  border-top:1px solid var(--line);
  transition:background-color var(--ease);
}
.gift-row:first-child{border-top:0;}
.gift-row:hover{background:var(--brand-100);}
.gift-thumb{
  flex:0 0 240px;
  width:240px;height:150px;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--brand-100);
  display:block;
}
.gift-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.gift-row:hover .gift-thumb img{transform:scale(1.04);}
.gift-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}
.gift-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.gift-head h3{font-size:20px;font-weight:600;line-height:1.4;}
.gift-desc{
  margin-top:10px;
  font-size:15px;
  color:var(--ink-600);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.gift-meta{
  display:flex;flex-wrap:wrap;gap:8px 20px;
  margin-top:14px;
  font-size:13px;color:var(--ink-400);
  font-variant-numeric:tabular-nums;
}
.gift-meta span{display:inline-flex;align-items:center;gap:6px;}
.gift-foot{margin-top:14px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-700);
}
.link-arrow .arrow{transition:transform var(--ease);}
.link-arrow:hover .arrow{transform:translateX(4px);}
.gift-extra{font-size:13px;color:var(--mint-500);font-weight:600;}
@media (max-width:767.98px){
  .gift-row{flex-direction:column;padding:18px;gap:14px;}
  .gift-thumb{flex:0 0 auto;width:100%;height:190px;}
}
@media (max-width:575.98px){
  .gift-thumb{height:160px;}
  .gift-head h3{font-size:18px;}
}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:6px;
  font-size:12px;font-weight:600;
  line-height:1;
}
.badge-brand{background:var(--brand-100);color:var(--brand-700);}
.badge-accent{background:var(--accent-500);color:#fff;}
.badge-mint{background:rgba(16,179,154,.12);color:#0B8474;}

/* ============ 侧栏 ============ */
.side-stack{display:flex;flex-direction:column;gap:20px;}
@media (min-width:992px){
  .side-stack{position:sticky;top:112px;}
}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:22px;
}
.side-card h3{font-size:17px;font-weight:600;margin-bottom:12px;}
.side-card p{font-size:14px;color:var(--ink-600);line-height:1.75;}
.side-list li{border-top:1px solid var(--line);}
.side-list li:first-child{border-top:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14px;color:var(--ink-600);
}
.side-list a:hover{color:var(--brand-700);}
.side-list a span.tag{
  font-size:12px;color:var(--brand-700);background:var(--brand-100);
  border-radius:6px;padding:2px 8px;font-weight:600;
}
.side-cta{
  background:var(--brand-900);
  border-color:var(--brand-900);
  color:#fff;
}
.side-cta h3{color:#fff;}
.side-cta p{color:rgba(255,255,255,.78);}
.side-cta .side-visual{
  border-radius:var(--r-md);overflow:hidden;margin-bottom:16px;
  aspect-ratio:16/10;background:rgba(255,255,255,.08);
}
.side-cta .side-visual img{width:100%;height:100%;object-fit:cover;}
.side-cta .btn-brand{width:100%;margin-top:16px;}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-100);color:var(--brand-700);
  font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--ink-600);line-height:1.75;}
@media (max-width:991.98px){
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:575.98px){
  .steps{grid-template-columns:1fr;}
}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  border:0;
  border-top:1px solid var(--line);
  background:transparent;
  border-radius:0;
}
.faq-acc .accordion-item:first-child{border-top:0;}
.faq-acc .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:20px 4px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-button::after{
  content:"+";
  background-image:none;
  font-size:22px;font-weight:400;color:var(--brand-500);
  width:auto;height:auto;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-acc .accordion-body{
  padding:0 4px 22px 16px;
  border-left:3px solid var(--brand-500);
  font-size:15px;
  color:var(--ink-600);
  line-height:1.85;
}
.faq-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:12px 26px;
}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-100);
  border:1px solid #D3E2F6;
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:46em;}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (max-width:767.98px){
  .cta-band{padding:26px 22px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.85);
  padding:64px 0 26px;
  margin-top:88px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:36px;
}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;}
.footer-desc{
  margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:30em;
}
.footer-col .status-online{color:rgba(255,255,255,.78);font-size:14px;}
.footer-links{
  display:flex;flex-wrap:wrap;gap:14px 26px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .site-footer{margin-top:56px;padding-top:44px;}
}

/* ============ Toast ============ */
.toast-tip{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  background:var(--ink-900);color:#fff;
  font-size:14px;padding:12px 22px;border-radius:var(--r-pill);
  box-shadow:var(--sh-3);opacity:0;pointer-events:none;
  transition:opacity var(--ease),transform var(--ease);
  z-index:2000;
}
.toast-tip.show{opacity:1;transform:translate(-50%,0);}