/* roulang page: index */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,select,textarea{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
::selection{background:rgba(31,200,180,.3);color:#fff;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#050F18;border-bottom:1px solid rgba(255,255,255,.05);font-size:12.5px;letter-spacing:.02em;color:var(--text-3);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{color:var(--text-2);font-weight:600;letter-spacing:.06em;}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.14);flex:none;}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-link{color:var(--primary);transition:color .2s;}
.topbar-link:hover{color:#8FF3E7;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,19,28,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease;
}
.site-header.is-scrolled{background:rgba(7,19,28,.86);box-shadow:0 14px 30px -22px rgba(0,0,0,.9);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;transition:height .25s ease;}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;height:32px;flex:none;}
.brand-mark{width:32px;height:32px;flex:none;color:var(--primary);}
.brand-text{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text-1);}
.brand-divider{width:1px;height:14px;background:var(--line-strong);}
.brand-text em{font-style:normal;font-size:12px;font-weight:400;color:var(--text-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{position:relative;padding:8px 13px;font-size:14.5px;color:var(--text-2);border-radius:8px;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.08);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;transition:border-color .2s,background .2s;}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(31,200,180,.08);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .25s,opacity .25s;}
.drawer-toggle{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .18s,background .2s,box-shadow .25s,border-color .2s,opacity .2s,filter .2s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dim));color:#05201D;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px rgba(31,200,180,.45);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);box-shadow:0 0 14px rgba(31,200,180,.24);}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text-1);}
.btn-ghost:hover{background:rgba(31,200,180,.10);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);background:rgba(31,200,180,.06);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}

.link-more{color:var(--primary);font-size:14px;font-weight:600;transition:color .2s;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{text-decoration:underline;text-underline-offset:3px;color:#8FF3E7;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.04);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:12px;}
.section-head p{margin:0;color:var(--text-2);font-size:15px;}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:88px 0 96px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(1000px 520px at 78% -12%,rgba(31,200,180,.18),transparent 70%),
    radial-gradient(620px 420px at 6% 12%,rgba(242,163,60,.09),transparent 70%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(31,200,180,.1);border:1px solid var(--line-strong);
  color:var(--primary);font-size:12.5px;letter-spacing:.06em;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.hero h1{font-size:44px;line-height:1.22;margin:22px 0 16px;letter-spacing:-.01em;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:30px;font-size:13.5px;color:var(--text-3);}
.hero-trust li{display:flex;align-items:center;gap:6px;}
.hero-trust li svg{color:var(--primary);flex:none;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-panel);border:1px solid var(--line);box-shadow:0 34px 64px -34px rgba(0,0,0,.95);}
.hero-float{
  position:absolute;left:-26px;bottom:-26px;
  display:flex;align-items:center;gap:14px;
  padding:14px 18px;border-radius:14px;
  background:rgba(14,33,48,.58);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 20px 40px -24px rgba(0,0,0,.9);
}
.hero-float .hf-num{font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-float .hf-label{font-size:12.5px;color:var(--text-3);letter-spacing:.04em;}

/* ---------- 阶梯权益 ---------- */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end;padding-top:76px;}
.ladder-step{transition:transform .25s ease;}
.ladder-step:nth-child(1){transform:translateY(0);}
.ladder-step:nth-child(2){transform:translateY(-22px);}
.ladder-step:nth-child(3){transform:translateY(-44px);}
.ladder-step:nth-child(4){transform:translateY(-66px);}
.ladder-card{
  display:flex;align-items:center;gap:14px;
  min-height:104px;padding:20px 22px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.ladder-card:hover{border-color:var(--line-strong);box-shadow:0 0 0 1px var(--line-strong),var(--shadow-card);}
.ladder-num{font-size:36px;font-weight:700;line-height:1;color:rgba(31,200,180,.28);font-variant-numeric:tabular-nums;flex:none;}
.ladder-body h3{font-size:17px;margin-bottom:6px;}
.ladder-body p{font-size:13.5px;color:var(--text-2);line-height:1.55;}
.ladder-step:last-child .ladder-num{color:rgba(242,163,60,.4);}
.ladder-step:last-child .ladder-card{border-color:rgba(242,163,60,.3);}

/* ---------- 套餐对比 ---------- */
.compare-wrap{
  overflow-x:auto;border-radius:var(--radius-panel);
  border:1px solid var(--line);background:var(--panel);
  box-shadow:var(--shadow-card);
}
table.compare{width:100%;min-width:860px;border-collapse:collapse;font-size:14.5px;}
table.compare caption{text-align:left;padding:22px 26px 0;color:var(--text-3);font-size:13px;}
table.compare th,table.compare td{padding:16px 22px;text-align:left;border-bottom:1px solid rgba(255,255,255,.05);vertical-align:middle;}
table.compare thead th{
  position:sticky;top:0;z-index:1;
  background:#0B1C28;
  font-size:15px;color:var(--text-1);
  border-bottom:1px solid var(--line-strong);
  padding-top:22px;padding-bottom:18px;
}
table.compare thead th:first-child{color:var(--text-3);font-weight:400;font-size:13px;letter-spacing:.06em;}
table.compare tbody th{font-weight:400;color:var(--text-2);background:rgba(255,255,255,.015);font-size:14px;}
table.compare tbody tr:hover td{background:rgba(31,200,180,.04);}
.col-recommend{background:rgba(31,200,180,.07);box-shadow:inset 1px 0 0 var(--line-strong),inset -1px 0 0 var(--line-strong);}
table.compare thead th.col-recommend{background:rgba(31,200,180,.12);}
.tag-rec{
  display:inline-block;margin-bottom:6px;padding:2px 9px;border-radius:6px;
  font-size:11.5px;letter-spacing:.08em;color:var(--accent);
  background:var(--accent-soft);border:1px solid rgba(242,163,60,.34);
}
.col-name{display:block;font-weight:700;}
.col-price{display:block;margin-top:4px;font-size:13px;color:var(--text-3);font-weight:400;}
.cell-yes{color:var(--primary);}
.cell-no{color:var(--text-3);}
.mini-ico{display:inline-block;width:16px;text-align:center;margin-right:6px;}
table.compare tfoot td{padding:20px 22px 26px;border-bottom:none;background:transparent;}
table.compare tfoot td.col-recommend{background:rgba(31,200,180,.07);}

/* ---------- 限时入口 ---------- */
.limit-band{padding:0 0 96px;}
.limit-inner{
  display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center;
  padding:26px 32px;border-radius:var(--radius-panel);
  background:rgba(14,33,48,.58);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 20px 44px -30px rgba(0,0,0,.9);
}
.limit-mid h3{font-size:19px;margin-bottom:6px;}
.limit-mid p{font-size:14px;color:var(--text-2);}
.limit-mid strong{color:var(--accent);font-weight:700;}
.countdown{display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums;}
.cd-block{
  min-width:52px;height:54px;display:grid;place-items:center;
  border-radius:10px;background:var(--panel-2);border:1px solid var(--line);
  color:var(--accent);font-size:22px;font-weight:700;letter-spacing:.04em;
}
.cd-colon{color:var(--text-3);font-size:20px;font-weight:700;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 0 0 1px var(--line-strong),var(--shadow-card);}
.news-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#102A38,#16394A);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:10px;padding:18px 20px 20px;flex:1;}
.news-title{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:8px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;letter-spacing:.04em;border:1px solid transparent;white-space:nowrap;
}
.badge-cyan{color:var(--primary);background:rgba(31,200,180,.12);border-color:rgba(31,200,180,.28);}
.badge-amber{color:var(--accent);background:var(--accent-soft);border-color:rgba(242,163,60,.32);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;border-radius:var(--radius-panel);
  background:var(--panel);border:1px dashed var(--line-strong);
  text-align:center;
}
.empty-state svg{color:var(--text-3);}
.empty-state p{font-size:15px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);border-left:3px solid transparent;padding-left:18px;transition:border-color .2s;}
.faq-item.is-open{border-left-color:var(--primary);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;min-height:56px;padding:12px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .2s;
}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{position:relative;width:16px;height:16px;flex:none;color:currentColor;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:currentColor;border-radius:1px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{width:14px;height:1.8px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.8px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item.is-open .faq-icon::before{transform:translate(-50%,-50%) rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{margin:0 0 22px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:840px;}

/* ---------- 咨询表单 ---------- */
.contact-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.contact-intro h2{font-size:32px;margin-bottom:16px;}
.contact-intro p{color:var(--text-2);font-size:15px;margin-bottom:24px;}
.contact-points{display:flex;flex-direction:column;gap:14px;}
.contact-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-2);}
.contact-points svg{flex:none;margin-top:4px;color:var(--primary);}
.form-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:32px;box-shadow:var(--shadow-card);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:10px;
  background:var(--panel-2);border:1px solid var(--line);
  color:var(--text-1);font-size:15px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{height:126px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:38px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239DB3BE' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,200,180,.18);
  background:#0B1E2B;
}
.check-line{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px;font-size:13.5px;color:var(--text-2);}
.check-line input{width:16px;height:16px;margin-top:3px;accent-color:var(--primary);flex:none;}
.check-line a{color:var(--primary);}
.check-line a:hover{text-decoration:underline;text-underline-offset:3px;}
.form-note{margin-top:14px;font-size:13px;color:var(--text-3);}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;
  background:rgba(31,200,180,.1);border:1px solid var(--line-strong);
  color:var(--primary);font-size:14px;
}
.form-msg.is-show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:#05101A;margin-top:0;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,200,180,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding:64px 0 44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:30px;height:30px;}
.footer-brand strong{font-size:16px;letter-spacing:.02em;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:420px;}
.footer-title{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .2s,transform .2s;display:inline-block;}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--text-2);}
.footer-contact span{color:var(--text-3);font-size:12.5px;letter-spacing:.06em;display:block;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);transition:color .2s;}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,10,16,.7);
  opacity:0;visibility:hidden;transition:opacity .28s,visibility .28s;z-index:80;
  backdrop-filter:blur(2px);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:#08161F;border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s ease;z-index:90;
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);transition:border-color .2s,color .2s;}
.drawer-close:hover{border-color:var(--line-strong);color:var(--text-1);}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:10px;
  font-size:15.5px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.05);
  transition:color .2s,background .2s;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--primary);background:rgba(31,200,180,.08);}
.drawer .btn{margin-top:22px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .hero h1{font-size:38px;}
  .nav-link{padding:8px 10px;font-size:14px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .hero{padding:64px 0 76px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;}
  .hero-float{left:16px;right:16px;bottom:-20px;}
  .hero h1{font-size:34px;}
  .section-head h2,.contact-intro h2{font-size:28px;}
  .ladder{grid-template-columns:repeat(2,1fr);padding-top:0;gap:16px;align-items:stretch;}
  .ladder-step{transform:none !important;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .limit-inner{grid-template-columns:1fr;gap:20px;text-align:center;justify-items:center;}
  .countdown{justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-sm{display:none;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:44px 0 60px;}
  .hero h1{font-size:30px;margin:18px 0 14px;}
  .hero-sub{font-size:16px;}
  .hero-float{position:static;margin-top:14px;left:auto;right:auto;bottom:auto;}
  .news-grid{grid-template-columns:1fr;}
  .ladder{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form-panel{padding:22px;}
  .section-head.row{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 32px;gap:30px;}
  .footer-bottom{font-size:12.5px;}
  .topbar-note{display:none;}
  table.compare th:first-child,table.compare td:first-child{
    position:sticky;left:0;z-index:2;background:var(--panel);
    box-shadow:1px 0 0 rgba(255,255,255,.07);
  }
  table.compare thead th:first-child{background:#0B1C28;}
  .limit-inner{padding:22px 18px;}
  .cd-block{min-width:44px;height:46px;font-size:19px;}
  .faq-item{padding-left:12px;}
}
@media (max-width:519px){
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .brand-text em{display:none;}
  .brand-divider{display:none;}
  .topbar-right .topbar-link:last-child{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-badge:6px;
  --r-input:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --sp:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:#4fe0cf}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp) 0}
.section-tight{padding:64px 0}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#05101A;
  border-bottom:1px solid rgba(31,200,180,.10);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar-domain{color:var(--text-2);letter-spacing:.04em}
.topbar-dot{color:var(--line-strong)}
.topbar-right{display:flex;align-items:center;gap:12px;white-space:nowrap}
.topbar-right a{font-size:12.5px;color:var(--text-2)}
.topbar-right a:hover{color:var(--primary)}
.topbar-sep{width:1px;height:12px;background:var(--line-strong);display:inline-block}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,19,28,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);flex:none}
.brand:hover{color:var(--text-1)}
.brand-mark{width:32px;height:32px;color:var(--primary);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em}
.brand-divider{width:1px;height:22px;background:var(--line-strong);margin-left:4px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  display:inline-block;padding:8px 13px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);
  transition:color .18s ease,background .18s ease,box-shadow .18s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.08)}
.nav-link.is-active{color:var(--primary);background:rgba(31,200,180,.12);box-shadow:inset 0 0 0 1px var(--line-strong)}
.nav-cta{margin-left:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  background:rgba(31,200,180,.06);margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#08161F;
  padding:8px 24px 24px;
}
.nav-drawer.is-open{display:block}
.drawer-link{
  display:flex;align-items:center;height:52px;
  border-bottom:1px solid rgba(31,200,180,.10);
  color:var(--text-2);font-size:15px;
}
.drawer-link:hover{color:var(--text-1)}
.drawer-link.is-active{color:var(--primary)}
.drawer-cta{margin-top:18px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{
  background:linear-gradient(135deg,#2ad8c2,#12A090 70%);
  color:#05201D;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#05201D;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px rgba(31,200,180,.42)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border-color:var(--line-strong);
}
.btn-ghost:hover{color:var(--text-1);background:rgba(31,200,180,.10);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.04em;font-weight:600;
  border:1px solid var(--line-strong);
  color:var(--primary);background:rgba(31,200,180,.12);
}
.badge-accent{color:var(--accent);border-color:rgba(242,163,60,.42);background:var(--accent-soft)}
.badge-plain{color:var(--text-2);border-color:rgba(157,179,190,.24);background:rgba(157,179,190,.08)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:64px 0 72px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,19,28,.62) 0%,rgba(7,19,28,.88) 55%,rgba(7,19,28,.98) 100%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:28px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(108,133,146,.6)}
.breadcrumb .current{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{font-size:44px;line-height:1.22;margin:18px 0 18px}
.hero-copy h1 .hl{color:var(--primary)}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px;font-size:13px;color:var(--text-3)}
.trust-row li{display:flex;align-items:center;gap:6px}
.trust-row li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);opacity:.8}
.trust-row li + li{padding-left:14px;border-left:1px solid rgba(31,200,180,.18)}
.hero-media{position:relative}
.media-frame{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  background:linear-gradient(140deg,#0F2A38,#0A1A24);
  aspect-ratio:16/11;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,19,28,0) 40%,rgba(7,19,28,.55) 100%);
}
.glass-float{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  padding:14px 16px;border-radius:14px;
  background:rgba(9,26,36,.62);
  border:1px solid rgba(31,200,180,.30);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.glass-float .gf-title{font-size:13.5px;font-weight:600;color:var(--text-1)}
.glass-float .gf-sub{font-size:12px;color:var(--text-3);letter-spacing:.03em}
.gf-pill{
  font-size:12px;padding:4px 10px;border-radius:999px;
  color:#05201D;background:linear-gradient(135deg,#2ad8c2,#12A090);font-weight:700;white-space:nowrap;
}

/* ---------- 章节标题 ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;line-height:1.3}
.section-head .eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;font-weight:700;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ---------- 交替双栏 ---------- */
.split-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-row + .split-row{margin-top:80px}
.split-row.is-reverse .split-media{order:2}
.split-row.is-reverse .split-copy{order:1}
.split-copy h2{font-size:30px;line-height:1.32;margin-bottom:18px}
.split-copy p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.split-media{position:relative}
.split-media .media-frame{aspect-ratio:16/10}
.split-media .float-tag{
  position:absolute;top:16px;left:16px;z-index:2;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:5px 11px;border-radius:8px;
  color:#05201D;background:rgba(31,200,180,.92);
}
.check-list{margin-top:24px;display:grid;gap:12px}
.check-list li{
  position:relative;padding-left:32px;font-size:15px;color:var(--text-2);line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:6px;
  border:1px solid var(--line-strong);background:rgba(31,200,180,.12);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:11px;width:8px;height:4px;
  border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}
.check-list li strong{color:var(--text-1);font-weight:600}

/* ---------- 步骤 ---------- */
.steps{display:grid;gap:18px;margin-top:28px}
.step{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  padding:18px 20px;border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.step-num{
  font-size:15px;font-weight:700;color:var(--primary);
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,200,180,.12);border:1px solid var(--line-strong);
  font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:16px;margin-bottom:4px}
.step-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}

/* ---------- 数据条 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  padding:34px 32px;border-radius:var(--r-panel);
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(31,200,180,.10),transparent 60%),
    var(--panel);
  border:1px solid var(--line);
}
.stat-item{padding-left:20px;border-left:2px solid rgba(31,200,180,.28)}
.stat-item:first-child{border-left-color:var(--primary)}
.stat-num{
  font-size:34px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px}
.stat-label{font-size:13.5px;color:var(--text-3);margin-top:8px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 4px 16px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .18s ease,padding-left .2s ease;
  position:relative;
}
.faq-q:hover{color:var(--primary)}
.faq-item.is-open .faq-q{color:var(--primary);padding-left:14px}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:2px;background:var(--primary);
}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.faq-a > div{overflow:hidden}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding:0 4px 20px 0}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-panel);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(110% 160% at 100% 0%,rgba(31,200,180,.16),transparent 58%),
    radial-gradient(90% 140% at 0% 100%,rgba(242,163,60,.10),transparent 55%),
    var(--panel);
  padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:28px;line-height:1.3}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:#05101A;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(31,200,180,0),rgba(31,200,180,.45),rgba(31,200,180,0)) 1;
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:30px;height:30px;color:var(--primary)}
.footer-brand strong{font-size:16px;letter-spacing:.01em}
.footer-desc{font-size:14px;line-height:1.85;color:var(--text-3);max-width:44ch}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-contact{display:grid;gap:12px;font-size:14px;color:var(--text-2)}
.footer-contact span{color:var(--text-3);margin-right:10px;font-size:13px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(31,200,180,.10);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sp:80px}
  .hero-grid{gap:40px}
  .hero-copy h1{font-size:38px}
  .split-row{gap:48px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
}
@media (max-width:1023px){
  :root{--sp:72px}
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy h1{font-size:36px}
  .hero-lead{max-width:none}
  .split-row,.split-row.is-reverse{grid-template-columns:1fr;gap:32px}
  .split-row.is-reverse .split-media{order:0}
  .split-row.is-reverse .split-copy{order:1}
  .split-row + .split-row{margin-top:56px}
  .stat-band{grid-template-columns:1fr;gap:20px;padding:28px 24px}
  .stat-item{padding-left:16px}
  .cta-band{padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  :root{--sp:56px}
  .container{padding:0 16px}
  .topbar-left .topbar-hint{display:none}
  .topbar-right a:first-child{display:none}
  .header-inner{height:62px;gap:12px}
  .page-hero{padding:40px 0 48px}
  .hero-copy h1{font-size:30px;line-height:1.3}
  .hero-lead{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .trust-row{gap:10px;font-size:12.5px}
  .trust-row li + li{padding-left:10px}
  .split-copy h2{font-size:24px}
  .section-head h2{font-size:24px}
  .cta-band{padding:30px 22px;gap:22px}
  .cta-band h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .glass-float{left:12px;right:12px;bottom:12px;padding:11px 13px}
}
@media (max-width:519px){
  .hero-copy h1{font-size:26px}
  .stat-num{font-size:28px}
  .footer-brand strong{font-size:15px}
}

/* roulang page: article */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --container:1240px;
  --gutter:24px;
  --section:88px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 480px at 82% -10%,rgba(31,200,180,.14),transparent 62%),
    radial-gradient(720px 420px at 4% 2%,rgba(242,163,60,.07),transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease}
a:hover{color:#3ee0cc}
img{max-width:100%;display:block;border:0}
button{font-family:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,200,180,.32);color:#fff}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#05101A;
  border-bottom:1px solid rgba(31,200,180,.12);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
  height:36px;
}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,200,180,.8);flex:none}
.topbar-domain{color:var(--text-2);font-weight:600;letter-spacing:.03em}
.topbar-tip{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;flex:none}
.topbar-link{color:var(--text-2);font-size:12.5px}
.topbar-link:hover{color:var(--primary)}
.topbar-divider{width:1px;height:12px;background:rgba(157,179,190,.28)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,19,28,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background-color .22s ease;
}
.site-header.is-scrolled{
  background:rgba(7,19,28,.94);
  box-shadow:0 16px 34px -26px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
  transition:height .22s ease;
}
.site-header.is-scrolled .header-inner{height:56px}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  flex:none;
}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:32px;
  height:32px;
  color:var(--primary);
  flex:none;
}
.brand-text{display:flex;align-items:center;gap:10px;line-height:1}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-divider{width:1px;height:14px;background:rgba(157,179,190,.32);display:inline-block}
.brand-sub{font-size:12.5px;color:var(--text-2);letter-spacing:.04em}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 14px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.08)}
.nav-link.is-active{color:var(--primary);background:rgba(31,200,180,.1)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(31,200,180,.7);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s ease,box-shadow .22s ease,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-lg{height:50px;padding:0 30px;font-size:16px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-dim));
  color:#05201D;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#04211E;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px rgba(31,200,180,.42)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);box-shadow:0 0 14px rgba(31,200,180,.26)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(31,200,180,.1);border-color:var(--primary);color:var(--text-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);background:rgba(31,200,180,.16)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:transparent;
  color:var(--text-1);
  cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:rgba(31,200,180,.1);border-color:var(--primary)}
.nav-toggle .bars{position:relative;width:18px;height:2px;background:currentColor;border-radius:2px;transition:background-color .18s ease}
.nav-toggle .bars::before,
.nav-toggle .bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
  transition:transform .22s ease,top .22s ease;
}
.nav-toggle .bars::before{top:-6px}
.nav-toggle .bars::after{top:6px}
.nav-toggle.is-open .bars{background:transparent}
.nav-toggle.is-open .bars::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open .bars::after{top:0;transform:rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  background:rgba(12,30,42,.6);
  border-bottom:1px solid rgba(31,200,180,.08);
}
.breadcrumb ol{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  padding:13px 0;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb li{display:flex;align-items:center;gap:10px;min-width:0}
.breadcrumb li:not(:last-child)::after{content:"/";color:rgba(157,179,190,.4)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current span{
  display:inline-block;
  max-width:44ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  vertical-align:bottom;
  color:var(--text-2);
}

/* ---------- 文章头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 44px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center 30%;
  opacity:.18;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,19,28,.5),rgba(7,19,28,.95));
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:1068px;
  margin:0 auto;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border-radius:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  border:1px solid transparent;
  white-space:nowrap;
}
.badge-primary{color:var(--primary);background:rgba(31,200,180,.12);border-color:rgba(31,200,180,.32)}
.badge-accent{color:var(--accent);background:var(--accent-soft);border-color:rgba(242,163,60,.34)}
.page-title{
  margin:18px 0 20px;
  font-size:40px;
  line-height:1.24;
  font-weight:700;
  letter-spacing:.005em;
  color:var(--text-1);
  max-width:26ch;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13.5px;
  color:var(--text-3);
}
.article-meta time{color:var(--text-2);font-variant-numeric:tabular-nums}
.meta-dot{color:rgba(157,179,190,.4)}
.meta-strong{color:var(--text-2)}

/* ---------- 正文布局 ---------- */
.article-section{padding:56px 0 var(--section)}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:44px;
  max-width:1068px;
  margin:0 auto;
}
.article-main{min-width:0}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:#CFDEE5;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  margin:2em 0 .8em;
  font-size:27px;
  line-height:1.35;
  font-weight:700;
  color:var(--text-1);
  position:relative;
  padding-left:14px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  bottom:.28em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(31,200,180,.25));
}
.article-body h3{
  margin:1.7em 0 .7em;
  font-size:20px;
  line-height:1.45;
  font-weight:700;
  color:var(--text-1);
}
.article-body h4{
  margin:1.4em 0 .6em;
  font-size:17px;
  font-weight:700;
  color:var(--primary);
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.55em}
.article-body li::marker{color:var(--primary)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#3ee0cc}
.article-body strong{color:var(--text-1);font-weight:700}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:12px;
  margin:1.6em auto;
  box-shadow:var(--shadow-card);
}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  line-height:1.7;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  background:rgba(31,200,180,.07);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
  border-radius:12px;
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:11px 14px;
  border:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.article-body th{background:rgba(31,200,180,.09);color:var(--text-1);font-weight:600}
.article-body td{color:var(--text-2)}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:var(--panel-2);
  color:var(--accent);
  font-size:.92em;
}
.article-body pre{
  margin:1.5em 0;
  padding:16px 18px;
  overflow:auto;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--panel-2);
}
.article-body pre code{background:none;padding:0;color:var(--text-2)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:64px 24px;
  border:1px dashed rgba(31,200,180,.28);
  border-radius:var(--radius-panel);
  background:rgba(14,33,48,.5);
  text-align:center;
}
.empty-icon{width:48px;height:48px;color:rgba(31,200,180,.55)}
.empty-state p{font-size:15px;color:var(--text-2);margin:0}
.empty-link{
  font-size:14px;
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:3px;
}

/* ---------- 文末入口 ---------- */
.article-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.foot-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 18px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:14px;
  background:rgba(14,33,48,.5);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.foot-link:hover{color:var(--text-1);background:rgba(31,200,180,.1);border-color:var(--primary);transform:translateY(-1px)}
.foot-link.is-primary{
  background:linear-gradient(135deg,rgba(31,200,180,.22),rgba(18,160,144,.14));
  border-color:var(--line-strong);
  color:var(--primary);
}
.foot-link .arrow{font-size:13px}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0}
.side-card{
  position:sticky;
  top:96px;
  padding:22px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--panel);
  box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--text-1);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.side-title::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(31,200,180,.8);
}
.side-list{margin-top:6px}
.side-item{
  display:block;
  padding:13px 0;
  border-bottom:1px solid rgba(31,200,180,.1);
}
.side-item:last-child{border-bottom:0;padding-bottom:2px}
.side-item a{
  display:block;
  font-size:14px;
  line-height:1.55;
  color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
}
.side-item a:hover{color:var(--primary);transform:translateX(2px)}
.side-item time{
  display:block;
  margin-top:5px;
  font-size:12px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--section)}
.related-inner{max-width:1068px;margin:0 auto}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.section-head h2{
  font-size:26px;
  line-height:1.3;
  font-weight:700;
  color:var(--text-1);
}
.section-desc{margin-top:8px;font-size:14px;color:var(--text-3)}
.section-more{font-size:14px;color:var(--primary);white-space:nowrap}
.section-more:hover{text-decoration:underline;text-underline-offset:3px}
.related-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.related-card{
  display:block;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .22s ease,border-color .18s ease,background-color .18s ease;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-card),0 0 0 1px var(--line-strong);
  border-color:var(--line-strong);
  background:#10283a;
}
.related-card .rc-title{
  display:block;
  font-size:16px;
  font-weight:600;
  line-height:1.55;
  color:var(--text-1);
  margin-bottom:8px;
}
.related-card:hover .rc-title{color:var(--primary)}
.related-card time{
  display:block;
  font-size:12.5px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ---------- CTA 通栏 ---------- */
.cta-wrap{padding:0 0 var(--section)}
.cta-band{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.35fr .85fr;
  gap:32px;
  align-items:center;
  padding:36px 38px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-panel);
  background:linear-gradient(125deg,#0F2634 0%,#0A1926 62%,#0E2130 100%);
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,200,180,.22),transparent 68%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2}
.cta-text h2{font-size:26px;line-height:1.35;font-weight:700;margin-bottom:12px}
.cta-text p{font-size:14.5px;line-height:1.8;color:var(--text-2);max-width:52ch;margin-bottom:22px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-media{position:relative;z-index:2}
.cta-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 22px 44px -26px rgba(0,0,0,.9);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#05101A;
  padding-top:54px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,200,180,.55),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--text-1)}
.footer-brand .brand-mark{width:30px;height:30px;color:var(--primary)}
.footer-brand strong{font-size:16.5px;font-weight:700;letter-spacing:.01em}
.footer-desc{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--text-3);
  max-width:44ch;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
  letter-spacing:.04em;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
  width:fit-content;
}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:13.5px;color:var(--text-2)}
.footer-contact span{
  display:inline-block;
  min-width:64px;
  color:var(--text-3);
  margin-right:8px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:18px 0 22px;
  border-top:1px solid rgba(31,200,180,.12);
  font-size:12.5px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);max-width:820px}
  .related-inner,.hero-inner{max-width:820px}
  .side-card{position:static}
  .page-title{font-size:36px}
}
@media (max-width:1023px){
  :root{--section:72px;--gutter:20px}
  .header-inner{height:64px;gap:16px}
  .brand-sub,.brand-divider{display:none}
  .main-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:block;
    margin:0;
    padding:10px 20px 20px;
    background:#08161F;
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 44px -22px rgba(0,0,0,.9);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none}
  .nav-link{
    display:flex;
    height:52px;
    padding:0 6px;
    border-radius:0;
    border-bottom:1px solid rgba(31,200,180,.12);
    font-size:16px;
    color:var(--text-1);
  }
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(31,200,180,.08)}
  .nav-toggle{display:inline-flex}
  .page-title{font-size:32px;max-width:none}
  .page-hero{padding:42px 0 36px}
  .article-body{font-size:16.5px}
  .cta-band{grid-template-columns:1fr;padding:30px 26px}
  .cta-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--section:56px;--gutter:16px}
  .topbar-inner{height:auto;min-height:36px;padding:7px 0;flex-wrap:wrap;gap:6px 12px}
  .topbar-tip{display:none}
  .header-actions .btn-sm{display:none}
  .page-title{font-size:27px;line-height:1.3;margin:16px 0 16px}
  .article-meta{font-size:12.5px;gap:8px}
  .article-section{padding:36px 0 var(--section)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px;padding-left:12px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:22px}
  .breadcrumb .current span{max-width:22ch}
  .cta-band{padding:26px 20px}
  .cta-text h2{font-size:21px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .article-foot{gap:10px}
  .foot-link{flex:1 1 46%;justify-content:center}
}
@media (max-width:519px){
  .page-title{font-size:24px}
  .brand-name{font-size:15.5px}
  .related-card{padding:16px}
  .article-body{font-size:15.5px}
  .article-body table{font-size:13.5px;display:block;overflow-x:auto}
  .foot-link{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#05201D;padding:10px 18px;border-radius:0 0 10px 0;z-index:999;font-weight:700;}
.skip-link:focus{left:0;}

/* ---------- 顶部信息条 ---------- */
.top-bar{
  background:#040D14;
  border-bottom:1px solid rgba(31,200,180,.10);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.top-bar .container{display:flex;align-items:center;justify-content:space-between;min-height:34px;gap:16px;}
.top-bar .tb-left{display:flex;align-items:center;gap:10px;min-width:0;}
.top-bar .tb-dot{width:5px;height:5px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary);flex:none;}
.top-bar .tb-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.top-bar .tb-right{display:flex;align-items:center;gap:14px;flex:none;}
.top-bar a{color:var(--text-2);transition:color .18s ease;}
.top-bar a:hover{color:var(--primary);}
.tb-divider{width:1px;height:12px;background:rgba(157,179,190,.28);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,19,28,.94);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,19,28,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 12px 30px -20px rgba(0,0,0,.9);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:68px;transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand .brand-mark{width:32px;height:32px;color:var(--primary);flex:none;}
.brand-text{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.brand-text .bsep{width:1px;height:15px;background:rgba(157,179,190,.3);flex:none;}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--text-3);letter-spacing:.06em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);transition:color .18s ease,background .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.08);}
.nav-link.is-active{color:var(--primary);background:rgba(31,200,180,.10);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(31,200,180,0));
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:14.5px;
  padding:11px 22px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,filter .18s ease;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-dim));
  color:#05201D;box-shadow:var(--glow);border-radius:999px;
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px rgba(31,200,180,.42);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:transparent;border:1px solid var(--line-strong);color:var(--text-1);border-radius:999px;
}
.btn-ghost:hover{background:rgba(31,200,180,.10);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.nav-cta{font-size:14px;padding:10px 20px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:rgba(31,200,180,.06);color:var(--text-1);
}
.nav-toggle svg{width:20px;height:20px;}
.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(4,13,20,.97);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  display:flex;flex-direction:column;padding:20px 20px 32px;
  transform:translateY(-102%);opacity:0;visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);color:var(--text-1);display:flex;align-items:center;justify-content:center;font-size:22px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{
  height:52px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid rgba(31,200,180,.10);font-size:16px;color:var(--text-2);
}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;}
.drawer-nav a span.arrow{color:var(--text-3);font-size:14px;}
.drawer-cta{margin-top:24px;}

/* ---------- 通用板块 ---------- */
main{display:block;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--primary);
  border:1px solid var(--line-strong);background:rgba(31,200,180,.12);
  padding:5px 12px;border-radius:6px;margin-bottom:18px;font-weight:600;
}
.eyebrow.is-accent{color:var(--accent);border-color:rgba(242,163,60,.38);background:var(--accent-soft);}
h1{font-size:44px;line-height:1.22;font-weight:700;letter-spacing:-.01em;}
h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.4;font-weight:700;}
.section-head h2{margin-bottom:14px;}
.lead{font-size:16.5px;line-height:1.85;color:var(--text-2);}
.muted{color:var(--text-2);font-size:14px;line-height:1.75;}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0;margin:0;}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(108,133,146,.7);}
.crumb a{color:var(--text-3);transition:color .18s ease;}
.crumb a:hover{color:var(--primary);}
.crumb .current{color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 84px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 380px at 78% 8%,rgba(31,200,180,.13),transparent 70%),
    radial-gradient(560px 320px at 8% 88%,rgba(242,163,60,.07),transparent 72%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{
  color:var(--primary);display:inline-block;
  background:linear-gradient(180deg,transparent 72%,rgba(31,200,180,.22) 72%);
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);}
.trust-row .dot{color:rgba(108,133,146,.6);}
.trust-row .item{display:inline-flex;align-items:center;gap:7px;}
.trust-row svg{width:15px;height:15px;color:var(--primary);flex:none;}
.hero-figure{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure .fig-glow{
  position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,.05) 40%,rgba(7,19,28,.82));
}
.hero-badge-float{
  position:absolute;left:18px;right:18px;bottom:18px;
  background:rgba(12,30,42,.62);
  border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-radius:14px;padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.hero-badge-float .hb-label{font-size:12px;color:var(--text-3);letter-spacing:.04em;margin-bottom:4px;}
.hero-badge-float .hb-value{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;}
.hero-badge-float .hb-value em{font-style:normal;color:var(--accent);}
.hero-badge-float .hb-pill{
  font-size:12px;color:var(--primary);border:1px solid var(--line-strong);
  background:rgba(31,200,180,.12);padding:5px 10px;border-radius:6px;white-space:nowrap;font-weight:600;
}

/* ---------- 数据条 ---------- */
.stat-strip{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,30,42,.7),rgba(7,19,28,0));
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:34px 26px;border-right:1px solid rgba(31,200,180,.10);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:34px;font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--text-1);}
.stat-num span{font-size:15px;font-weight:600;color:var(--primary);margin-left:6px;}
.stat-label{font-size:13.5px;color:var(--text-2);margin-top:6px;}

/* ---------- 交错卡片网格 ---------- */
.stagger-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:28px;align-items:start;
}
.stagger-grid .b-card:nth-child(even){margin-top:56px;}
.b-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.b-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:0 22px 46px -24px rgba(0,0,0,.85),0 0 0 1px var(--line-strong);}
.b-card .thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#102A38,#16394A);overflow:hidden;}
.b-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.b-card:hover .thumb img{transform:scale(1.04);}
.b-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,0) 45%,rgba(7,19,28,.55));}
.b-card .thumb .tag-float{
  position:absolute;left:14px;top:14px;z-index:2;
  font-size:12px;letter-spacing:.04em;font-weight:600;color:var(--primary);
  background:rgba(7,19,28,.72);border:1px solid var(--line-strong);
  padding:4px 10px;border-radius:6px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.b-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.b-body h3{font-size:20px;line-height:1.45;}
.b-body p{font-size:14.5px;line-height:1.8;color:var(--text-2);}
.b-list{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.b-list li{display:flex;gap:9px;font-size:14px;color:var(--text-2);line-height:1.65;}
.b-list li svg{width:15px;height:15px;flex:none;margin-top:4px;color:var(--primary);}
.b-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid rgba(31,200,180,.12);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.b-foot .b-note{font-size:13px;color:var(--text-3);}
.link-arrow{
  font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;
  transition:gap .18s ease,text-decoration-color .18s ease;
  text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;
}
.link-arrow:hover{gap:10px;text-decoration-color:var(--primary);}

/* ---------- 适用对象 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.scene-card:hover{border-color:var(--line-strong);transform:translateY(-2px);background:var(--panel);}
.scene-card .idx{
  font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.flow-step{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-card);
}
.flow-step::after{
  content:"";position:absolute;top:50%;right:-20px;width:20px;height:1px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 5px,transparent 5px 10px);
}
.flow-step:last-child::after{display:none;}
.flow-step .fs-num{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,200,180,.12);border:1px solid var(--line-strong);
  color:var(--primary);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid rgba(31,200,180,.12);}
.faq-item:first-of-type{border-top:1px solid rgba(31,200,180,.12);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:14px 4px 14px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  position:relative;width:20px;height:20px;flex:none;transition:transform .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:opacity .22s ease,transform .22s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{
  padding:0 4px 20px 16px;border-left:3px solid var(--primary);
  font-size:15px;line-height:1.85;color:var(--text-2);
}
.faq-item.is-open .faq-a{max-height:420px;}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(600px 260px at 88% 12%,rgba(31,200,180,.22),transparent 72%),
    linear-gradient(135deg,#0E2130,#0A1824);
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--text-2);line-height:1.8;max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.form-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:30px;box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  width:100%;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;height:46px;font-size:15px;color:var(--text-1);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:118px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;-webkit-appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);
  background-position:calc(100% - 19px) 20px,calc(100% - 14px) 20px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:40px;
}
.field input::placeholder,.field textarea::placeholder{color:#5A7381;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#0C2231;
  box-shadow:0 0 0 3px rgba(31,200,180,.16);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.check-row input{
  appearance:none;-webkit-appearance:none;width:16px;height:16px;flex:none;margin-top:3px;
  border:1px solid var(--line-strong);border-radius:4px;background:var(--panel-2);
  transition:background .16s ease,border-color .16s ease;
}
.check-row input:checked{background:var(--primary);border-color:var(--primary);
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2305201D' d='M6.4 11.3 3.2 8.1l1.2-1.2 2 2 4.9-4.9 1.2 1.2z'/%3E%3C/svg%3E");
  background-size:14px 14px;background-position:center;background-repeat:no-repeat;}
.form-tip{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#05101A;border-top:1px solid transparent;
  position:relative;padding:64px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,200,180,.30),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:30px;height:30px;color:var(--primary);flex:none;}
.footer-brand strong{font-size:16.5px;font-weight:700;letter-spacing:.02em;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--text-2);max-width:420px;}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text-1);margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease,transform .18s ease;}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--text-2);}
.footer-contact span{display:inline-block;color:var(--text-3);min-width:68px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(31,200,180,.10);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);text-decoration:underline;text-underline-offset:3px;transition:color .18s ease;}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .hero-grid{gap:36px;}
  .nav-inner{gap:16px;}
  .nav-link{padding:9px 11px;font-size:14px;}
  h1{font-size:40px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .main-nav{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/10;}
  h1{font-size:36px;}
  h2{font-size:28px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(31,200,180,.10);}
  .stagger-grid{gap:22px;}
  .stagger-grid .b-card:nth-child(even){margin-top:32px;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .flow{grid-template-columns:1fr 1fr;}
  .flow-step::after{display:none;}
  .form-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .top-bar .tb-right{display:none;}
  .top-bar .container{justify-content:flex-start;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  h1{font-size:30px;line-height:1.28;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .hero{padding:34px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{flex:1 1 100%;}
  .stagger-grid{grid-template-columns:1fr;gap:20px;}
  .stagger-grid .b-card:nth-child(even){margin-top:0;}
  .scene-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .stat-item{padding:24px 18px;}
  .stat-num{font-size:28px;}
  .cta-band{padding:32px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{font-size:15px;min-height:52px;}
  .form-panel{padding:22px;}
  .field-row{grid-template-columns:1fr;}
  .hero-badge-float{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --gap:24px;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--section) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--primary);
  border:1px solid var(--line-strong);
  background:rgba(31,200,180,.10);
  border-radius:6px;
  padding:5px 10px;
  margin-bottom:16px;
}
.h2{
  font-size:32px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
.h3{
  font-size:22px;
  line-height:1.4;
  font-weight:700;
}
.section-sub{
  color:var(--text-2);
  font-size:15px;
  max-width:56ch;
  margin-top:12px;
}
.more-link{
  font-size:14px;
  color:var(--primary);
  white-space:nowrap;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#05101A;
  border-bottom:1px solid rgba(31,200,180,.12);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:36px;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:10px;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,200,180,.7);}
.topbar-domain{color:var(--text-2);font-variant-numeric:tabular-nums;}
.topbar-right{display:flex;align-items:center;gap:12px;}
.topbar-link{color:var(--text-2);font-size:12.5px;}
.topbar-link:hover{color:var(--primary);text-decoration:none;}
.topbar-sep{width:1px;height:12px;background:rgba(157,179,190,.28);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,19,28,.94);
  border-bottom:1px solid rgba(31,200,180,.14);
  transition:background .25s ease,box-shadow .25s ease,padding .25s ease;
  backdrop-filter:blur(10px);
}
.site-header.is-scrolled{
  background:rgba(7,19,28,.86);
  backdrop-filter:blur(14px);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:68px;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .header-inner{min-height:56px;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  flex:0 0 auto;
}
.brand:hover{text-decoration:none;color:var(--text-1);}
.brand-mark{width:32px;height:32px;color:var(--primary);flex:0 0 auto;}
.brand-text{display:flex;align-items:center;gap:10px;font-size:17px;letter-spacing:.01em;}
.brand-text strong{font-weight:700;}
.brand-divider{width:1px;height:16px;background:rgba(157,179,190,.35);display:inline-block;}
.brand-sub{font-size:13px;color:var(--text-2);letter-spacing:.04em;}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:wrap;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 12px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--text-2);
  transition:color .18s ease,background .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.09);text-decoration:none;}
.nav-link.is-active{color:var(--primary);background:rgba(31,200,180,.12);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(135deg,#1FC8B4,#12A090);
  color:#05201D;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px rgba(31,200,180,.34);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--text-1);
  background:transparent;
}
.btn-ghost:hover{background:rgba(31,200,180,.10);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
  color:var(--text-1);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:rgba(5,16,26,.97);
  backdrop-filter:blur(10px);
  display:flex;
  flex-direction:column;
  padding:20px 20px 32px;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;color:var(--text-1);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 8px;
  border-bottom:1px solid rgba(31,200,180,.12);
  color:var(--text-1);
  font-size:16px;
}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;}
.drawer-cta{margin-top:22px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 72px;
  background:
    radial-gradient(900px 380px at 78% -10%,rgba(31,200,180,.18),transparent 70%),
    linear-gradient(180deg,rgba(7,19,28,.90),rgba(7,19,28,.98)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid rgba(31,200,180,.14);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);text-decoration:none;}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--primary);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
}
.page-hero h1{
  font-size:44px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.015em;
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:56ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px;}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  font-size:13.5px;
  color:var(--text-3);
}
.hero-points li{display:inline-flex;align-items:center;gap:7px;}
.hero-points li::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(31,200,180,.8);
}
.hero-figure{
  position:relative;
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/11;
  background:#102A38;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,19,28,0) 40%,rgba(7,19,28,.82) 100%);
}
.hero-float{
  position:absolute;
  left:18px;
  right:18px;
  bottom:18px;
  z-index:2;
  background:rgba(14,33,48,.62);
  border:1px solid rgba(31,200,180,.28);
  border-radius:14px;
  padding:14px 16px;
  backdrop-filter:blur(14px);
  display:flex;
  align-items:center;
  gap:14px;
}
.hero-float strong{font-size:15px;display:block;}
.hero-float span{font-size:12.5px;color:var(--text-2);}
.hero-float .pill{
  margin-left:auto;
  font-size:12px;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(242,163,60,.35);
  border-radius:6px;
  padding:4px 9px;
  white-space:nowrap;
}

/* ---------- 目录 + 内容布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 272px;
  gap:44px;
  align-items:start;
}
.toc-col{position:relative;}
.toc{
  position:sticky;
  top:96px;
  background:rgba(14,33,48,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  padding:20px;
  backdrop-filter:blur(14px);
}
.toc-title{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:9px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-list a:hover{background:rgba(31,200,180,.10);color:var(--text-1);text-decoration:none;}
.toc-list a.is-current{color:var(--primary);background:rgba(31,200,180,.12);border-left-color:var(--primary);font-weight:600;}
.toc-list .num{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.toc-cta{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid rgba(31,200,180,.14);
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.toc-cta a{display:inline-block;margin-top:8px;font-size:13.5px;}

/* ---------- 通用板块 ---------- */
.block{padding:64px 0;}
.block:first-child{padding-top:56px;}
.block + .block{border-top:1px solid rgba(31,200,180,.10);}
.block-head{margin-bottom:30px;}
.block-head .h2{margin-top:6px;}
.block-lead{color:var(--text-2);font-size:15.5px;margin-top:12px;max-width:60ch;}

/* 业务版图卡片 */
.biz-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--gap);
}
.biz-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.biz-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card),0 0 0 1px var(--line-strong);
}
.biz-card-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.biz-icon{
  width:40px;height:40px;
  border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(31,200,180,.12);
  border:1px solid rgba(31,200,180,.24);
  color:var(--primary);
  flex:0 0 auto;
}
.biz-card h3{font-size:18px;font-weight:700;line-height:1.4;}
.biz-card p{font-size:14.5px;line-height:1.75;color:var(--text-2);}
.biz-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-2);
  border:1px solid rgba(31,200,180,.20);
  background:rgba(31,200,180,.07);
  border-radius:6px;
  padding:3px 9px;
}
.tag-accent{
  color:var(--accent);
  border-color:rgba(242,163,60,.35);
  background:var(--accent-soft);
}

/* 数据条 */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--gap);
}
.stat{
  background:linear-gradient(180deg,rgba(14,33,48,.95),rgba(10,24,36,.95));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 20px;
  position:relative;
  overflow:hidden;
}
.stat::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--primary),rgba(31,200,180,0));
}
.stat-num{
  font-size:32px;
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--text-1);
  letter-spacing:-.01em;
}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{font-size:13.5px;color:var(--text-2);margin-top:8px;}

/* 业务线图文 */
.bizline{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  gap:36px;
  align-items:center;
  padding:32px 0;
}
.bizline + .bizline{border-top:1px dashed rgba(31,200,180,.18);}
.bizline.is-reverse .bizline-media{order:2;}
.bizline-media{
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:#102A38;
  box-shadow:var(--shadow-card);
}
.bizline-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.bizline:hover .bizline-media img{transform:scale(1.03);}
.bizline-body .h3{margin-bottom:12px;}
.bizline-body p{font-size:15px;line-height:1.85;color:var(--text-2);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}
.check-list li::before{
  content:"";
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:4px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(circle at 50% 50%,var(--primary) 0 3px,transparent 3.5px),
    rgba(31,200,180,.10);
}

/* 流程时间线 */
.timeline{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  counter-reset:step;
}
.step{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 20px 22px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.step-num{
  font-size:30px;
  font-weight:700;
  line-height:1;
  color:var(--primary);
  opacity:.28;
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.7;color:var(--text-2);}
.step::after{
  content:"";
  position:absolute;
  top:34px;
  right:-16px;
  width:14px;
  border-top:1px dashed rgba(31,200,180,.45);
}
.step:last-child::after{display:none;}

/* 合作方式 */
.coop-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.coop-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-card);
}
.coop-card.is-featured{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card),var(--glow);
  transform:translateY(-8px);
  position:relative;
}
.coop-badge{
  position:absolute;
  top:-11px;
  left:24px;
  font-size:12px;
  letter-spacing:.05em;
  color:#05201D;
  background:linear-gradient(135deg,#1FC8B4,#12A090);
  border-radius:6px;
  padding:3px 10px;
  font-weight:700;
}
.coop-card h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.coop-card p{font-size:14.5px;line-height:1.75;color:var(--text-2);margin-bottom:18px;}
.coop-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2);margin-bottom:22px;}
.coop-list li{display:flex;gap:9px;line-height:1.65;}
.coop-list li::before{content:"·";color:var(--primary);font-weight:700;}
.coop-card .btn{margin-top:auto;}

/* FAQ */
.faq{border-top:1px solid rgba(31,200,180,.14);}
.faq-item{border-bottom:1px solid rgba(31,200,180,.14);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding:16px 4px 16px 0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:18px;height:18px;
  transition:transform .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
  transition:opacity .22s ease,transform .22s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{
  padding:0 56px 20px 0;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  border-left:3px solid transparent;
  padding-left:14px;
  margin-left:-14px;
  transition:border-color .22s ease;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary);}

/* CTA 通栏 */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-panel);
  padding:44px 40px;
  background:
    radial-gradient(600px 240px at 85% 15%,rgba(31,200,180,.20),transparent 70%),
    linear-gradient(135deg,rgba(14,33,48,.96),rgba(10,24,36,.96));
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:52ch;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 表单（咨询区） */
.consult-grid{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:40px;
  align-items:start;
}
.consult-info .h2{margin-bottom:14px;}
.consult-info p{font-size:15px;line-height:1.85;color:var(--text-2);}
.consult-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.consult-list li{
  display:flex;
  gap:12px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}
.consult-list .k{
  flex:0 0 auto;
  color:var(--primary);
  font-weight:600;
  font-variant-numeric:tabular-nums;
}
.form-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;
  min-height:46px;
  background:var(--panel-2);
  border:1px solid rgba(31,200,180,.20);
  border-radius:10px;
  padding:11px 14px;
  font-size:15px;
  color:var(--text-1);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.field select{
  appearance:none;
  -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239DB3BE' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:38px;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,200,180,.18);
  background:#0C1E2A;
}
.field input:invalid:not(:placeholder-shown),.field textarea:invalid:not(:placeholder-shown){
  border-color:rgba(240,96,60,.55);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);margin:6px 0 20px;line-height:1.65;}
.check-row input{
  width:16px;height:16px;margin-top:3px;flex:0 0 auto;
  accent-color:var(--primary);
  border-radius:4px;
}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#05101A;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(31,200,180,.45),transparent) 1;
  padding:56px 0 26px;
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr) minmax(0,1fr);
  gap:40px;
  padding-bottom:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;letter-spacing:.01em;}
.footer-brand .brand-mark{width:30px;height:30px;color:var(--primary);}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-2);max-width:44ch;}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px);text-decoration:none;}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--text-2);}
.footer-contact div{display:flex;gap:12px;flex-wrap:wrap;}
.footer-contact span{color:var(--text-3);min-width:64px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:22px;
  border-top:1px solid rgba(31,200,180,.12);
  font-size:12.5px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--section:80px;}
  .page-hero h1{font-size:38px;}
  .layout{grid-template-columns:minmax(0,1fr) 250px;gap:32px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero{padding:40px 0 56px;}
  .page-hero h1{font-size:34px;}
  .layout{grid-template-columns:1fr;}
  .toc-col{order:-1;}
  .toc{position:static;padding:16px 18px;}
  .toc-list{
    flex-direction:row;
    overflow-x:auto;
    gap:8px;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
  .toc-list a{
    white-space:nowrap;
    border-left:0;
    border:1px solid rgba(31,200,180,.18);
    border-radius:999px;
    padding:7px 14px;
  }
  .toc-list a.is-current{border-color:var(--line-strong);}
  .toc-cta{display:none;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step::after{display:none;}
  .coop-grid{grid-template-columns:1fr;}
  .coop-card.is-featured{transform:none;}
  .bizline{grid-template-columns:1fr;gap:22px;}
  .bizline.is-reverse .bizline-media{order:0;}
  .consult-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--section:56px;--gap:16px;}
  .container{padding:0 16px;}
  .topbar-left .topbar-hint{display:none;}
  .page-hero h1{font-size:30px;}
  .hero-lead{font-size:15.5px;}
  .h2{font-size:24px;}
  .h3{font-size:18px;}
  .biz-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr 1fr;}
  .timeline{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .form-panel{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .header-actions .btn-sm{width:auto;}
  .brand-sub{display:none;}
  .brand-text{font-size:16px;}
}
@media (max-width:519px){
  .page-hero h1{font-size:27px;}
  .stat-row{grid-template-columns:1fr;}
  .faq-a-inner{padding-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#07131C;
  --bg-1:#0C1E2A;
  --panel:#0E2130;
  --panel-2:#0A1824;
  --line:rgba(31,200,180,.16);
  --line-strong:rgba(31,200,180,.38);
  --primary:#1FC8B4;
  --primary-dim:#12A090;
  --accent:#F2A33C;
  --accent-soft:rgba(242,163,60,.14);
  --text-1:#E6F1F4;
  --text-2:#9DB3BE;
  --text-3:#6C8592;
  --danger:#F0603C;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 22px rgba(31,200,180,.28);
  --dish:rgba(31,200,180,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease;}
a:hover{color:var(--text-1);text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;line-height:1.28;letter-spacing:.01em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(31,200,180,.28);color:#fff;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#050F17;
  border-bottom:1px solid rgba(31,200,180,.10);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:35px;gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.topbar-domain{color:var(--text-2);font-weight:600;letter-spacing:.04em;}
.topbar-dot{width:1px;height:12px;background:rgba(157,179,190,.28);display:inline-block;}
.topbar-right{display:flex;align-items:center;gap:14px;}
.topbar-link{color:var(--primary);font-weight:600;}
.topbar-link:hover{color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,19,28,.94);
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-compact{
  background:rgba(7,19,28,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.9);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:68px;
  transition:min-height .22s ease;
}
.site-header.is-compact .nav-wrap{min-height:56px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);}
.brand:hover{text-decoration:none;color:var(--text-1);}
.brand-mark{width:32px;height:32px;color:var(--primary);flex:0 0 auto;}
.brand-text{display:flex;align-items:center;gap:10px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.brand-divider{width:1px;height:16px;background:rgba(157,179,190,.3);display:inline-block;}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.08em;white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:9px;
  font-size:14.5px;font-weight:500;color:var(--text-2);
  white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(31,200,180,.08);text-decoration:none;}
.nav-link.is-active{color:var(--primary);background:rgba(31,200,180,.12);font-weight:600;}
.nav-cta{display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#25D6C0 0%,var(--primary-dim) 100%);
  color:#05201D;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:0 0 30px rgba(31,200,180,.36);
  text-decoration:none;color:#05201D;
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{background:var(--dish);text-decoration:none;color:var(--text-1);}
.btn-ghost:active{background:rgba(31,200,180,.18);}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:9px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;filter:none;}

.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line-strong);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:6px;
  border:1px solid var(--line-strong);
  background:rgba(31,200,180,.10);
  color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  margin-bottom:18px;
}
.eyebrow.is-accent{
  border-color:rgba(242,163,60,.4);
  background:var(--accent-soft);
  color:var(--accent);
}
h2.section-title{font-size:32px;line-height:1.3;}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.8;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:88px 0 80px;
  background:
    linear-gradient(180deg,rgba(7,19,28,.90) 0%,rgba(7,19,28,.96) 62%,var(--bg-0) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,200,180,.5),transparent);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.crumbs{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(157,179,190,.45);}
.crumbs .current{color:var(--text-1);}
.page-hero h1{
  font-size:44px;line-height:1.22;margin-bottom:18px;
}
.page-hero h1 .hl{
  color:var(--primary);
  background:linear-gradient(180deg,transparent 66%,rgba(31,200,180,.20) 66%);
}
.hero-lead{
  color:var(--text-2);font-size:16.5px;line-height:1.85;max-width:640px;
  margin-bottom:30px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-figure{
  position:relative;border-radius:var(--radius-panel);
  overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--panel);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure .figure-cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;
  background:linear-gradient(180deg,rgba(7,19,28,0),rgba(7,19,28,.92));
  font-size:13px;color:var(--text-2);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.hero-figure .figure-cap strong{color:var(--text-1);font-size:13.5px;}

/* ---------- 数据条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:-32px;position:relative;z-index:5;
}
.metric{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 0 1px var(--line-strong);}
.metric-value{
  font-size:30px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;
  display:flex;align-items:baseline;gap:4px;
}
.metric-value small{font-size:14px;color:var(--text-2);font-weight:600;}
.metric-label{margin-top:8px;font-size:14px;color:var(--text-1);font-weight:600;}
.metric-note{margin-top:6px;font-size:12.5px;color:var(--text-3);line-height:1.6;}

/* ---------- 支持渠道卡片 ---------- */
.channel-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.channel-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px;
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.channel-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card),0 0 0 1px var(--line-strong);
}
.channel-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,200,180,.12);
  border:1px solid var(--line-strong);
  color:var(--primary);
}
.channel-icon svg{width:22px;height:22px;}
.channel-card h3{font-size:18px;}
.channel-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.channel-meta{
  margin-top:auto;padding-top:14px;
  border-top:1px solid rgba(157,179,190,.14);
  font-size:12.5px;color:var(--text-3);
  display:flex;align-items:center;justify-content:space-between;gap:8px;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 9px;border-radius:6px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
  background:rgba(31,200,180,.12);
  border:1px solid var(--line-strong);
  color:var(--primary);
}
.tag-accent{
  background:var(--accent-soft);
  border-color:rgba(242,163,60,.4);
  color:var(--accent);
}

/* ---------- 问答 + 数据条混合 ---------- */
.mix-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;
}
.qa-list{display:flex;flex-direction:column;gap:18px;}
.qa-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-left:3px solid var(--primary);
  border-radius:var(--radius-card);
  padding:24px 24px 22px;
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease;
}
.qa-item:hover{border-color:var(--line-strong);border-left-color:var(--primary);transform:translateX(2px);}
.qa-q{
  font-size:16.5px;font-weight:700;color:var(--text-1);
  display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;
}
.qa-q .mark{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  background:rgba(31,200,180,.16);color:var(--primary);
}
.qa-a{
  font-size:14.5px;color:var(--text-2);line-height:1.85;
  padding-left:32px;
}
.qa-a .muted{color:var(--text-3);}

.meter-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  padding:28px 26px;
  box-shadow:var(--shadow-card);
}
.meter-panel h3{font-size:19px;margin-bottom:8px;}
.meter-panel .panel-sub{font-size:13.5px;color:var(--text-3);margin-bottom:22px;line-height:1.7;}
.meter{margin-bottom:20px;}
.meter:last-of-type{margin-bottom:0;}
.meter-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:10px;font-size:13.5px;color:var(--text-2);margin-bottom:8px;
}
.meter-head b{color:var(--text-1);font-weight:600;}
.meter-head span{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;}
.meter-track{
  height:8px;border-radius:999px;background:#0A1E2A;
  border:1px solid rgba(31,200,180,.12);
  overflow:hidden;
}
.meter-fill{
  height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--primary-dim),var(--primary));
  box-shadow:0 0 14px rgba(31,200,180,.35);
}
.meter-fill.is-accent{background:linear-gradient(90deg,#C97E22,var(--accent));box-shadow:0 0 14px rgba(242,163,60,.30);}
.panel-foot{
  margin-top:24px;padding-top:18px;border-top:1px solid rgba(157,179,190,.14);
  font-size:13px;color:var(--text-3);line-height:1.75;
}

/* ---------- 流程时间线 ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  counter-reset:flow;
}
.flow-step{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.flow-step::before{
  counter-increment:flow;
  content:counter(flow,decimal-leading-zero);
  display:block;
  font-size:30px;font-weight:700;line-height:1;
  color:rgba(31,200,180,.28);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:13.8px;color:var(--text-2);line-height:1.75;}
.flow-step .flow-time{
  margin-top:14px;font-size:12.5px;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.faq-item{border-bottom:1px solid rgba(157,179,190,.16);position:relative;}
.faq-item:first-child{border-top:1px solid rgba(157,179,190,.16);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 4px 16px 0;
  text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .18s ease,padding-left .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:7px;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:16px;line-height:1;
  transition:transform .22s ease,background .18s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(31,200,180,.14);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a-inner{
  padding:0 4px 22px 0;
  font-size:15px;color:var(--text-2);line-height:1.85;
  border-left:3px solid var(--primary);
  padding-left:16px;
  margin-left:0;
}

/* ---------- CTA ---------- */
.cta-band{
  background:
    linear-gradient(120deg,rgba(12,30,42,.96),rgba(7,19,28,.96)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:28px;line-height:1.35;max-width:620px;}
.cta-inner p{margin-top:12px;color:var(--text-2);font-size:14.5px;line-height:1.8;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#05101A;
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,200,180,.30),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--text-1);}
.footer-brand .brand-mark{width:30px;height:30px;color:var(--primary);}
.footer-brand strong{font-size:16px;font-weight:700;}
.footer-desc{font-size:13.8px;color:var(--text-3);line-height:1.85;max-width:420px;}
.footer-title{
  font-size:14px;font-weight:700;color:var(--text-1);
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--text-1);transform:translateX(2px);text-decoration:none;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.8px;color:var(--text-2);}
.footer-contact span{color:var(--text-3);margin-right:8px;}
.footer-bottom{
  border-top:1px solid rgba(157,179,190,.12);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:38px;}
  h2.section-title{font-size:28px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:64px 0 72px;}
  .page-hero h1{font-size:34px;}
  .metrics{grid-template-columns:repeat(2,1fr);margin-top:-24px;}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .mix-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .site-header.menu-open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;left:0;right:0;top:100%;
    background:rgba(7,19,28,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    padding:8px 20px 18px;
  }
  .site-header.menu-open .nav-link{
    min-height:52px;justify-content:flex-start;
    border-radius:10px;font-size:15.5px;padding:0 14px;
  }
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .topbar-left .topbar-tip{display:none;}
  .page-hero h1{font-size:30px;}
  .page-hero{padding:48px 0 60px;}
  .hero-lead{font-size:15.5px;}
  h2.section-title{font-size:24px;}
  .metrics{grid-template-columns:1fr 1fr;gap:14px;}
  .metric{padding:18px 16px;}
  .metric-value{font-size:25px;}
  .channel-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .qa-item{padding:20px 18px;}
  .qa-a{padding-left:0;margin-top:6px;}
  .faq-q{font-size:15px;}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr 1fr;}
  .metric-value{font-size:22px;}
  .brand-sub,.brand-divider{display:none;}
  .brand-name{font-size:15.5px;}
}