/* roulang page: index */
:root{
  --bg-base:#070B14; --bg-1:#0C1322; --bg-2:#111A2E;
  --brand:#2F6BFF; --accent:#24E0C2; --accent-2:#FF9B4A;
  --tx-1:#E8EEF9; --tx-2:#9BB0CC; --tx-3:#6B7F99;
  --ok:#2FD08A; --warn:#FFB020; --err:#FF5C6C;
  --glass:rgba(255,255,255,.045); --glass-line:rgba(120,180,255,.14);
  --r-s:10px; --r-m:14px; --r-l:20px; --r-pill:999px;
  --sh-card:0 10px 30px rgba(3,8,20,.55);
  --sh-hover:0 18px 44px rgba(3,8,20,.72);
  --glow:0 0 0 1px rgba(36,224,194,.45),0 8px 28px rgba(36,224,194,.26);
  --bs-primary:#24E0C2;
  --bs-primary-rgb:36,224,194;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg-base);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:transparent;color:var(--tx-1);overflow-x:hidden;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(620px 420px at 88% 4%,rgba(36,224,194,.10),transparent 66%),
    radial-gradient(760px 520px at 6% 58%,rgba(47,107,255,.12),transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.65;
  background-image:
    repeating-linear-gradient(0deg,rgba(120,180,255,.05) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(90deg,rgba(120,180,255,.05) 0 1px,transparent 1px 40px);
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent)}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5{margin:0;color:var(--tx-1);font-weight:700}
p{margin:0}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(36,224,194,.3);color:#04101C}

.container{
  width:100%;max-width:1200px;margin:0 auto;
  padding-left:20px;padding-right:20px;
}
@media (min-width:1400px){.container{max-width:1280px}}

/* 通用玻璃面 */
.glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .glass{background:rgba(12,19,34,.86)}
}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,11,20,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.site-header.scrolled{background:rgba(7,11,20,.97);box-shadow:var(--sh-card)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:inline-flex;align-items:baseline;font-size:20px;font-weight:800;letter-spacing:-.3px;color:var(--tx-1);white-space:nowrap}
.brand:hover{color:var(--tx-1)}
.brand .brand-sep{color:var(--tx-3);margin:0 3px;font-weight:600}
.brand .brand-hl{color:var(--accent)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link-item{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 12px;font-size:15px;color:var(--tx-2);border-radius:var(--r-s);
}
.nav-link-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-link-item:hover{color:var(--tx-1)}
.nav-link-item:hover::after{transform:scaleX(1);opacity:.45}
.nav-link-item.active{color:var(--accent);text-shadow:0 0 12px rgba(36,224,194,.5)}
.nav-link-item.active::after{transform:scaleX(1);opacity:1;box-shadow:0 0 10px rgba(36,224,194,.75)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--glass-line);border-radius:var(--r-s);
  background:rgba(12,19,34,.7);cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--tx-1);transition:transform .25s ease,opacity .25s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;transition:all .25s ease-out;
}
.btn-glow{background:linear-gradient(135deg,#24E0C2,#2F6BFF);color:#04101C}
.btn-glow:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:var(--glow);color:#04101C}
.btn-glow:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:transparent;border-color:rgba(120,180,255,.35);color:var(--tx-1)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,194,.08);color:var(--tx-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 徽章 */
.badge-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;line-height:1;white-space:nowrap;
  background:rgba(36,224,194,.12);color:var(--accent);border:1px solid rgba(36,224,194,.3);
}
.badge-pill.warm{background:rgba(255,155,74,.12);color:var(--accent-2);border-color:rgba(255,155,74,.32)}
.badge-pill.mute{background:rgba(120,180,255,.08);color:var(--tx-2);border-color:rgba(120,180,255,.18)}
.badge-pill.ok{background:rgba(47,208,138,.12);color:var(--ok);border-color:rgba(47,208,138,.3)}

/* 板块 */
.section{padding:72px 0;position:relative}
.sec-head{margin-bottom:36px}
.sec-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3}
.sec-head h2::after{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--accent);margin-top:12px}
.sec-sub{margin-top:12px;font-size:15px;color:var(--tx-2);max-width:660px}
.sec-more{font-size:14px;color:var(--tx-2)}

/* 首屏 */
.hero{padding-top:52px;padding-bottom:64px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-eyebrow{margin-bottom:18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--tx-2);max-width:580px}
.hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:13px;color:var(--tx-3)}
.hero-visual{position:relative;min-height:400px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--sh-card)}
.hero-visual>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,11,20,.28),rgba(7,11,20,.9) 72%);
}
.hero-panel{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;padding:22px;
  border-radius:var(--r-l);
}
.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.panel-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px rgba(47,208,138,.85)}
.panel-metrics{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0 16px}
.panel-metrics b{display:block;font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums}
.panel-metrics span{font-size:13px;color:var(--tx-2)}
.panel-bar{height:8px;border-radius:var(--r-pill);background:rgba(120,180,255,.14);overflow:hidden}
.panel-bar i{display:block;height:100%;width:86%;border-radius:var(--r-pill);background:linear-gradient(90deg,#24E0C2,#2F6BFF);box-shadow:0 0 12px rgba(36,224,194,.6)}
.panel-caption{margin-top:10px;font-size:12.5px;color:var(--tx-3)}

/* 指标卡 */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric-card{position:relative;padding:26px 24px;border-radius:var(--r-l);overflow:hidden;transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out}
.metric-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,#24E0C2,#2F6BFF)}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.metric-num{font-size:clamp(32px,5vw,54px);font-weight:800;line-height:1.05;color:var(--accent);font-variant-numeric:tabular-nums}
.metric-num small{font-size:.42em;font-weight:700;margin-left:4px;color:var(--tx-2)}
.metric-label{margin-top:8px;font-size:14px;color:var(--tx-2)}
.metric-trend{margin-top:16px;display:flex;align-items:center;gap:8px}

/* 服务矩阵 */
.svc-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch}
.svc-feature{display:flex;flex-direction:column;border-radius:var(--r-l);overflow:hidden;transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out}
.svc-feature img{width:100%;aspect-ratio:16/10;object-fit:cover}
.svc-feature-body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1}
.svc-feature h3{font-size:clamp(17px,1.6vw,21px);font-weight:600;line-height:1.45}
.svc-feature p{font-size:15px;color:var(--tx-2)}
.svc-arrow{margin-top:auto;font-size:14px;font-weight:600;color:var(--accent)}
.svc-feature:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.svc-list{display:flex;flex-direction:column;gap:22px}
.svc-item{display:flex;gap:16px;align-items:flex-start;padding:22px;border-radius:var(--r-l);flex:1;transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out}
.svc-item:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.svc-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:var(--r-s);
  display:grid;place-items:center;font-weight:800;font-size:16px;
  background:rgba(36,224,194,.12);border:1px solid rgba(36,224,194,.3);color:var(--accent);
}
.svc-item h3{font-size:17px;font-weight:600;line-height:1.45}
.svc-item p{margin-top:6px;font-size:14px;color:var(--tx-2)}
.svc-item .svc-arrow{margin-top:10px;display:inline-block}

/* 最新信息 */
.news-lead{
  display:grid;grid-template-columns:340px 1fr;border-radius:var(--r-l);overflow:hidden;
  margin-bottom:24px;transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.news-lead:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.news-lead-img{position:relative;min-height:240px}
.news-lead-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.news-lead-body{padding:28px;display:flex;flex-direction:column;gap:12px}
.news-lead-body h3{font-size:clamp(18px,2vw,23px);font-weight:600;line-height:1.45}
.news-excerpt{font-size:15px;color:var(--tx-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--tx-3)}
.news-meta.mt-auto{margin-top:auto}
.news-more{font-size:13.5px;font-weight:600;color:var(--accent)}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--r-l);
  transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.news-card h3{font-size:19px;font-weight:600;line-height:1.45}
.news-card h3 a{color:var(--tx-1)}
.news-card h3 a:hover{color:var(--accent)}
.news-empty{
  padding:44px 24px;border-radius:var(--r-l);text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.news-empty .empty-icon{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:rgba(36,224,194,.1);border:1px solid rgba(36,224,194,.28);color:var(--accent);font-size:20px;font-weight:800;
}
.news-empty p{color:var(--tx-2);font-size:15px}

/* 对比 */
.cmp-legend{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:18px;font-size:13.5px;color:var(--tx-2)}
.cmp-legend i{display:inline-block;width:26px;height:8px;border-radius:var(--r-pill);margin-right:8px;vertical-align:middle}
.cmp-legend .lg-a{background:linear-gradient(90deg,#24E0C2,#2F6BFF);box-shadow:0 0 10px rgba(36,224,194,.5)}
.cmp-legend .lg-b{background:rgba(155,176,204,.32)}
.cmp-wrap{padding:8px 26px 18px;border-radius:var(--r-l)}
.cmp-row{display:grid;grid-template-columns:180px 1fr;gap:22px;align-items:center;padding:20px 0;border-bottom:1px solid rgba(120,180,255,.1)}
.cmp-row:last-child{border-bottom:0}
.cmp-name{font-size:15px;font-weight:600;color:var(--tx-1)}
.cmp-name small{display:block;font-size:12.5px;font-weight:400;color:var(--tx-3);margin-top:2px}
.cmp-bars{display:flex;flex-direction:column;gap:10px}
.cmp-bar{height:10px;border-radius:var(--r-pill);background:rgba(120,180,255,.1);overflow:hidden}
.cmp-bar i{display:block;height:100%;border-radius:var(--r-pill)}
.cmp-bar.a i{background:linear-gradient(90deg,#24E0C2,#2F6BFF);box-shadow:0 0 10px rgba(36,224,194,.5)}
.cmp-bar.b i{background:rgba(155,176,204,.32)}
.cmp-foot{margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.cmp-foot p{font-size:14px;color:var(--tx-2);max-width:620px}

/* FAQ */
.accordion-item{
  background:var(--glass);-webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);border-radius:var(--r-m);margin-bottom:14px;overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);transition:border-color .25s ease,background .25s ease;
}
.accordion-item:hover{border-color:rgba(36,224,194,.35)}
.accordion-item:last-child{margin-bottom:0}
.accordion-header{margin:0}
.accordion-button{
  position:relative;width:100%;padding:20px 58px 20px 22px;
  background:transparent;border:0;box-shadow:none;
  color:var(--tx-1);font-size:17px;font-weight:600;line-height:1.5;text-align:left;cursor:pointer;
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
}
.accordion-button:not(.collapsed){
  color:var(--accent);background:rgba(36,224,194,.055);
  box-shadow:inset 3px 0 0 var(--accent),0 0 22px rgba(36,224,194,.12);
}
.accordion-button:focus{outline:none;box-shadow:inset 3px 0 0 var(--accent),0 0 0 3px rgba(36,224,194,.18)}
.accordion-button::before{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;transform:translateY(-50%);
  background:
    linear-gradient(var(--accent),var(--accent)) center / 14px 2px no-repeat,
    linear-gradient(var(--accent),var(--accent)) center / 2px 14px no-repeat;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg)}
.accordion-button::after{display:none}
.accordion-body{padding:4px 22px 22px;font-size:15px;line-height:1.85;color:var(--tx-2)}

/* 转化表单 */
.cta-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:start}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--tx-2)}
.cta-points .tick{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;margin-top:5px;
  display:grid;place-items:center;font-size:12px;font-weight:800;
  background:rgba(36,224,194,.14);color:var(--accent);border:1px solid rgba(36,224,194,.34);
}
.cta-trust{margin-top:22px;font-size:13px;color:var(--tx-3)}
.form-card{padding:28px;border-radius:var(--r-l)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--tx-2);margin-bottom:8px;letter-spacing:.2px}
.form-control{
  width:100%;padding:12px 14px;font-size:15px;line-height:1.6;
  background:rgba(7,11,20,.62);color:var(--tx-1);
  border:1px solid rgba(120,180,255,.2);border-radius:var(--r-s);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  -webkit-appearance:none;appearance:none;
}
.form-control::placeholder{color:var(--tx-3)}
.form-card .form-control:focus{
  background:rgba(7,11,20,.85);border-color:var(--accent);color:var(--tx-1);
  box-shadow:0 0 0 3px rgba(36,224,194,.16);outline:none;
}
textarea.form-control{resize:vertical;min-height:118px}
.pill-group{display:flex;flex-wrap:wrap;gap:10px}
.pill-check{position:relative;display:inline-flex}
.pill-check input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.pill-check span{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(120,180,255,.25);background:rgba(7,11,20,.5);
  font-size:14px;color:var(--tx-2);cursor:pointer;transition:all .2s ease;
}
.pill-check span:hover{border-color:rgba(36,224,194,.5);color:var(--tx-1)}
.pill-check input:checked + span{border-color:var(--accent);color:var(--accent);background:rgba(36,224,194,.1)}
.pill-check input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.form-actions{margin-top:6px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-privacy{margin-top:14px;font-size:12.5px;color:var(--tx-3);line-height:1.7}
.form-tip{
  margin-top:16px;padding:12px 16px;border-radius:var(--r-s);font-size:13.5px;
  background:rgba(36,224,194,.08);border:1px solid rgba(36,224,194,.24);color:var(--accent);
}

/* 页脚 */
.site-footer{position:relative;margin-top:24px;background:var(--bg-1);border-top:1px solid rgba(120,180,255,.14)}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px}
.footer-brand{font-size:19px;font-weight:800;color:var(--tx-1);display:inline-flex;align-items:baseline}
.footer-brand .brand-sep{color:var(--tx-3);margin:0 3px;font-weight:600}
.footer-brand .brand-hl{color:var(--accent)}
.footer-desc{margin-top:14px;font-size:14px;color:var(--tx-2);max-width:320px}
.footer-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--tx-1);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--tx-2);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:18px 0 26px;border-top:1px solid rgba(120,180,255,.1);font-size:13px;color:var(--tx-3);
}
.footer-bottom .fb-left{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(120,180,255,.28);background:transparent;color:var(--tx-2);
  font-size:13px;cursor:pointer;transition:all .22s ease;
}
.to-top:hover{border-color:var(--accent);color:var(--accent);background:rgba(36,224,194,.08)}

/* 响应式 */
@media (max-width:1199.98px){
  .hero-grid{gap:36px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:28px}
  .footer-col.contact{grid-column:span 3}
}
@media (max-width:991.98px){
  .section{padding:56px 0}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    padding:10px 16px 20px;
    background:rgba(9,14,25,.97);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--glass-line);box-shadow:var(--sh-card);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .25s ease,opacity .25s ease,visibility .25s ease;
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-menu.open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
  .nav-link-item{
    display:flex;align-items:center;min-height:48px;padding:12px 14px;font-size:16px;
    border-left:3px solid transparent;border-radius:0;
  }
  .nav-link-item::after{display:none}
  .nav-link-item.active{border-left-color:var(--accent);background:rgba(36,224,194,.06)}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero{padding-top:36px;padding-bottom:48px}
  .hero-visual{min-height:320px}
  .metric-row{grid-template-columns:repeat(2,1fr);gap:18px}
  .svc-grid{grid-template-columns:1fr}
  .news-lead{grid-template-columns:1fr}
  .news-lead-img{min-height:200px;aspect-ratio:16/10}
  .cmp-row{grid-template-columns:150px 1fr;gap:16px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 30px}
  .footer-col.contact{grid-column:span 2}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px}
  body{font-size:15.5px}
  .section{padding:40px 0}
  .site-header,.nav-menu{--x:0}
  .nav-inner{height:60px}
  .nav-menu{top:60px;max-height:calc(100vh - 60px)}
  .brand{font-size:17px}
  .nav-cta{height:40px;padding:0 16px;font-size:13px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:15.5px}
  .btn-glow,.btn-ghost{height:46px;padding:0 20px;font-size:14px}
  .hero-visual{min-height:280px}
  .hero-panel{left:14px;right:14px;bottom:14px;padding:18px}
  .panel-metrics{gap:12px}
  .glass{
    background:rgba(12,19,34,.86);
    -webkit-backdrop-filter:none;backdrop-filter:none;
  }
  .metric-row{grid-template-columns:repeat(2,1fr);gap:14px}
  .metric-card{padding:18px}
  .news-grid{grid-template-columns:1fr;gap:14px}
  .news-card{padding:18px}
  .news-lead-body{padding:20px}
  .svc-feature img{aspect-ratio:16/9}
  .svc-feature-body{padding:20px}
  .svc-item{padding:18px}
  .cmp-wrap{padding:4px 18px 14px}
  .cmp-row{grid-template-columns:1fr;gap:12px;padding:16px 0}
  .cmp-legend{gap:14px;font-size:12.5px}
  .accordion-button{font-size:16px;padding:17px 52px 17px 18px}
  .accordion-body{padding:2px 18px 18px;font-size:14.5px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:36px 0 24px}
  .footer-col.contact{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:575.98px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .metric-num{font-size:32px}
  .panel-metrics b{font-size:24px}
}

/* roulang page: article */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1322;
  --bg-2:#111A2E;
  --brand:#2F6BFF;
  --accent:#24E0C2;
  --accent-2:#FF9B4A;
  --tx-1:#E8EEF9;
  --tx-2:#9BB0CC;
  --tx-3:#6B7F99;
  --ok:#2FD08A;
  --warn:#FFB020;
  --err:#FF5C6C;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(120,180,255,.14);
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(3,8,20,.55);
  --sh-hover:0 18px 44px rgba(3,8,20,.72);
  --glow:0 0 0 1px rgba(36,224,194,.45), 0 8px 28px rgba(36,224,194,.26);
}
*{box-sizing:border-box}
html{background:var(--bg-base);scroll-behavior:smooth}
body{
  margin:0;
  background:transparent;
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(620px 420px at 88% -4%, rgba(36,224,194,.10), transparent 70%),
    radial-gradient(760px 520px at 6% 58%, rgba(47,107,255,.12), transparent 72%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.75;
  background-image:
    repeating-linear-gradient(0deg, rgba(120,180,255,.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(120,180,255,.05) 0 1px, transparent 1px 40px);
}
a{color:var(--tx-1);text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
button,input,textarea,select{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;color:var(--tx-1)}
p{margin:0 0 16px}
::selection{background:rgba(36,224,194,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1280px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,20,.86);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.site-header.scrolled{background:rgba(7,11,20,.97);box-shadow:var(--sh-card)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{font-size:20px;font-weight:800;letter-spacing:.4px;white-space:nowrap;color:var(--tx-1)}
.brand:hover{color:var(--tx-1)}
.brand-sep{color:var(--tx-3);margin:0 3px}
.brand-hl{color:var(--accent);text-shadow:0 0 14px rgba(36,224,194,.35)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link-item{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;font-size:15px;color:var(--tx-2);border-radius:var(--r-s);
  transition:color .25s ease,background .25s ease;
}
.nav-link-item:hover{color:var(--tx-1);background:rgba(120,180,255,.07)}
.nav-link-item::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:2px;
  background:var(--accent);border-radius:2px;transform:translateX(-50%);
  transition:width .25s ease;box-shadow:0 0 10px rgba(36,224,194,.7);
}
.nav-link-item:hover::after{width:18px}
.nav-link-item.active{color:var(--accent);text-shadow:0 0 12px rgba(36,224,194,.5)}
.nav-link-item.active::after{width:22px}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-s);
  background:rgba(120,180,255,.08);border:1px solid var(--glass-line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--tx-1);border-radius:2px;transition:.25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:none;border-radius:var(--r-pill);
  background:linear-gradient(135deg,#24E0C2,#2F6BFF);
  color:#04101C;font-size:15px;font-weight:700;letter-spacing:.3px;cursor:pointer;
  transition:transform .25s ease,filter .25s ease,box-shadow .25s ease;
  box-shadow:0 8px 24px rgba(36,224,194,.22);
}
.btn-glow:hover{transform:translateY(-2px);filter:brightness(1.08);color:#04101C;box-shadow:var(--glow)}
.btn-glow:active{transform:translateY(0) scale(.98)}
.btn-glow.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:transparent;border:1px solid rgba(120,180,255,.35);
  color:var(--tx-1);font-size:15px;font-weight:600;cursor:pointer;
  transition:border-color .25s ease,background .25s ease,transform .25s ease;
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,194,.08);color:var(--tx-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--tx-2);font-size:14px;font-weight:600;transition:color .25s ease,gap .25s ease}
.link-arrow:hover{color:var(--accent);gap:10px}
.link-arrow i{font-size:12px}

/* ============ 徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.5px;font-weight:600;
  background:rgba(36,224,194,.12);color:var(--accent);border:1px solid rgba(36,224,194,.3);
}
.badge-pill.warm{background:rgba(255,155,74,.12);color:var(--accent-2);border-color:rgba(255,155,74,.32)}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;color:var(--tx-2);
  background:rgba(120,180,255,.07);border:1px solid var(--glass-line);
  transition:color .25s ease,border-color .25s ease,background .25s ease;
}
.tag-pill:hover{color:var(--accent);border-color:rgba(36,224,194,.4);background:rgba(36,224,194,.08)}

/* ============ 玻璃卡 ============ */
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-card), inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}

/* ============ 面包屑 ============ */
.crumb-band{padding:22px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--tx-3)}
.crumb a{color:var(--tx-2)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--tx-3)}
.crumb .current{color:var(--accent);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{padding:26px 0 30px;position:relative}
.article-head::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.5),transparent);
}
.article-head .head-inner{max-width:860px}
.article-head h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;line-height:1.22;letter-spacing:-.5px;
  margin:18px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:14px;color:var(--tx-3)}
.article-meta .mi{display:inline-flex;align-items:center;gap:7px}
.article-meta .mi i{color:var(--accent);font-size:13px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--tx-3)}

/* ============ 正文布局 ============ */
.article-wrap{padding:8px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start}
.article-main{min-width:0;max-width:820px}
.article-panel{
  padding:34px 36px 38px;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-card), inset 0 1px 0 rgba(255,255,255,.06);
}
.article-body{font-size:17px;line-height:1.9;color:var(--tx-1);word-break:break-word}
.article-body p{margin:0 0 20px;color:var(--tx-2)}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--tx-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:3px;height:.92em;
  background:var(--accent);border-radius:2px;box-shadow:0 0 10px rgba(36,224,194,.6);
}
.article-body h3{margin:28px 0 12px;font-size:19px;font-weight:600;color:var(--tx-1)}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600;color:var(--tx-1)}
.article-body ul{margin:0 0 20px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--tx-2)}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 8px rgba(36,224,194,.55);
}
.article-body ol{counter-reset:li;margin:0 0 20px}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:12px;counter-increment:li;color:var(--tx-2)}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.28em;
  width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(36,224,194,.12);border:1px solid rgba(36,224,194,.32);
  color:var(--accent);font-size:12px;font-weight:700;line-height:1;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;font-size:15px;color:var(--tx-2);
  border-left:3px solid var(--accent);
  background:rgba(36,224,194,.06);
  border-radius:0 var(--r-m) var(--r-m) 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;height:auto;border-radius:var(--r-m);object-fit:cover;margin:24px auto;border:1px solid var(--glass-line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--tx-3);text-align:center;margin-top:10px}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(36,224,194,.4)}
.article-body a:hover{border-bottom-color:var(--accent)}
.article-body strong{color:var(--tx-1);font-weight:700}
.article-body hr{border:none;height:1px;margin:32px 0;background:linear-gradient(90deg,transparent,rgba(120,180,255,.28),transparent)}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--glass-line);text-align:left;color:var(--tx-2)}
.article-body th{background:rgba(120,180,255,.08);color:var(--tx-1);font-weight:600}
.article-body code{background:rgba(120,180,255,.12);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--accent)}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:56px 28px;border-radius:var(--r-l);
  background:rgba(12,19,34,.86);border:1px solid var(--glass-line);
}
.empty-state .es-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(36,224,194,.12);border:1px solid rgba(36,224,194,.3);color:var(--accent);font-size:22px;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:12px}
.empty-state p{color:var(--tx-2);font-size:15px;margin-bottom:22px}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.side-card{
  padding:22px 22px 24px;border-radius:var(--r-m);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-card), inset 0 1px 0 rgba(255,255,255,.06);
}
.side-card h4{
  font-size:14px;font-weight:700;letter-spacing:.6px;color:var(--tx-1);
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--glass-line);
}
.toc-list li{margin-bottom:8px}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--tx-2);
  padding-left:12px;border-left:2px solid transparent;transition:.25s ease;
}
.toc-list a:hover{color:var(--tx-1)}
.toc-list a.current{color:var(--accent);border-left-color:var(--accent);text-shadow:0 0 12px rgba(36,224,194,.4)}
.side-links li{margin-bottom:12px}
.side-links a{display:block;font-size:14px;line-height:1.65;color:var(--tx-2);transition:.25s ease}
.side-links a:hover{color:var(--accent);transform:translateX(3px)}
.side-links .sub{display:block;font-size:12px;color:var(--tx-3);margin-top:4px}
.side-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--tx-2)}
.side-back:hover{color:var(--accent)}

/* ============ 底部操作区 ============ */
.article-actions{margin-top:36px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .tag-label{font-size:13px;color:var(--tx-3);margin-right:2px}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.pn-card{
  padding:18px 20px;border-radius:var(--r-m);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:var(--sh-card), inset 0 1px 0 rgba(255,255,255,.06);
  transition:.25s ease-out;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.45);box-shadow:var(--sh-hover)}
.pn-card .pn-label{display:block;font-size:12px;letter-spacing:.5px;color:var(--tx-3);margin-bottom:8px}
.pn-card .pn-title{display:block;font-size:15px;font-weight:600;color:var(--tx-1);line-height:1.6}
.pn-card.is-empty .pn-title{color:var(--tx-3);font-weight:500}
.actions-foot{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}

/* ============ 相关推荐 ============ */
.related{padding:0 0 76px}
.sec-head{margin-bottom:28px}
.sec-head h2{
  position:relative;font-size:clamp(24px,2.8vw,34px);font-weight:700;padding-bottom:14px;
}
.sec-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;
  background:var(--accent);border-radius:3px;box-shadow:0 0 12px rgba(36,224,194,.6);
}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{overflow:hidden;border-radius:var(--r-l)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px}
.rel-body h3 a:hover{color:var(--accent)}
.rel-body .rel-desc{font-size:14px;color:var(--tx-2);line-height:1.7;margin:0 0 14px}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--tx-3)}
.related-empty{font-size:14px;color:var(--tx-3)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:20px;padding:64px 0 0;
  background:linear-gradient(180deg,rgba(12,19,34,.4),rgba(7,11,20,.96));
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:46px}
.footer-brand{font-size:19px;font-weight:800;color:var(--tx-1)}
.footer-desc{margin:16px 0 18px;font-size:14px;line-height:1.8;color:var(--tx-2);max-width:300px}
.footer-tags{display:flex;flex-wrap:wrap;gap:10px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--tx-1)}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--tx-2);transition:color .25s ease,transform .25s ease;display:inline-block}
.footer-col ul li a:hover{color:var(--accent);transform:translateX(2px)}
.footer-col.contact ul li span{font-size:14px;color:var(--tx-2)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--glass-line);
}
.fb-left{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--tx-3)}
.to-top{
  height:40px;padding:0 18px;border-radius:var(--r-pill);cursor:pointer;
  background:rgba(36,224,194,.1);border:1px solid rgba(36,224,194,.3);
  color:var(--accent);font-size:13px;font-weight:600;transition:.25s ease;
}
.to-top:hover{background:rgba(36,224,194,.18);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:30px}
}
@media (max-width:991.98px){
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    padding:12px 16px 18px;
    background:rgba(9,14,25,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--glass-line);
    box-shadow:var(--sh-card);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-link-item{height:48px;padding:0 14px;font-size:15px;border-left:3px solid transparent;border-radius:8px}
  .nav-link-item::after{display:none}
  .nav-link-item.active{border-left-color:var(--accent);background:rgba(36,224,194,.07)}
  .nav-toggle{display:flex}
  .nav-right .nav-cta{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .side-col{position:static;order:2}
  .article-main{max-width:100%}
  .article-panel{padding:26px 22px 30px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:767.98px){
  .nav-inner{height:60px}
  .brand{font-size:18px}
  .article-head{padding:20px 0 24px}
  .article-head h1{font-size:clamp(26px,6vw,34px);margin:14px 0 14px}
  .article-body{font-size:16px;line-height:1.88}
  .article-body h2{margin-top:32px}
  .pn-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .article-panel{padding:20px 16px 24px}
  .crumb .current{max-width:48vw}
  .btn-glow,.btn-ghost{width:100%}
  .actions-foot{flex-direction:column}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1322;
  --bg-2:#111A2E;
  --brand:#2F6BFF;
  --accent:#24E0C2;
  --accent-2:#FF9B4A;
  --tx-1:#E8EEF9;
  --tx-2:#9BB0CC;
  --tx-3:#6B7F99;
  --ok:#2FD08A;
  --warn:#FFB020;
  --err:#FF5C6C;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(120,180,255,.14);
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(3,8,20,.55);
  --sh-hover:0 18px 44px rgba(3,8,20,.72);
  --glow:0 0 0 1px rgba(36,224,194,.45),0 8px 28px rgba(36,224,194,.26);
  --ff:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;font-family:var(--ff);font-size:16px;line-height:1.85;
  color:var(--tx-1);background:var(--bg-base);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-2;
  background:
    radial-gradient(720px 420px at 88% 4%, rgba(36,224,194,.10), transparent 62%),
    radial-gradient(780px 540px at 6% 58%, rgba(47,107,255,.12), transparent 66%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-2;
  background-image:
    repeating-linear-gradient(0deg, rgba(120,180,255,.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(120,180,255,.05) 0 1px, transparent 1px 40px);
}
img{max-width:100%;display:block;border-radius:inherit;}
a{color:var(--tx-2);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;}
a:hover{color:var(--accent);}
p{margin:0 0 16px;color:var(--tx-2);}
h1,h2,h3,h4{margin:0 0 14px;color:var(--tx-1);letter-spacing:-.3px;}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3;}
h3{font-size:clamp(17px,1.6vw,21px);font-weight:600;line-height:1.45;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.container{width:100%;max-width:1200px!important;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1280px!important;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;height:72px;
  background:rgba(7,11,20,.88);backdrop-filter:blur(12px);
  transition:background-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.site-header.scrolled{background:rgba(7,11,20,.97);box-shadow:var(--sh-card);}
.nav-inner{height:72px;display:flex;align-items:center;gap:22px;}
.brand{
  font-size:19px;font-weight:800;color:var(--tx-1);letter-spacing:-.2px;
  display:inline-flex;align-items:center;white-space:nowrap;
}
.brand:hover{color:var(--tx-1);}
.brand-sep{color:var(--tx-3);margin:0 3px;}
.brand-hl{color:var(--accent);}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link-item{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;
  font-size:15px;color:var(--tx-2);border-radius:var(--r-s);
}
.nav-link-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);opacity:0;transform:translateY(3px);
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.nav-link-item:hover{color:var(--tx-1);}
.nav-link-item:hover::after{opacity:.65;transform:translateY(0);}
.nav-link-item.active{
  color:var(--accent);text-shadow:0 0 12px rgba(36,224,194,.5);
}
.nav-link-item.active::after{opacity:1;transform:translateY(0);box-shadow:0 0 12px rgba(36,224,194,.6);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--glass-line);border-radius:var(--r-s);
  background:var(--glass);flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--tx-1);border-radius:2px;transition:transform .25s ease-out,opacity .25s ease-out;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;
}
.btn-glow{
  border:0;color:#04101C;
  background:linear-gradient(135deg,#24E0C2,#2F6BFF);
}
.btn-glow:hover{color:#04101C;transform:translateY(-2px);filter:brightness(1.08);box-shadow:var(--glow),0 12px 30px rgba(36,224,194,.26);}
.btn-glow:active{transform:translateY(0) scale(.98);}
.btn-ghost{
  background:transparent;border:1px solid rgba(120,180,255,.35);color:var(--tx-1);
}
.btn-ghost:hover{color:var(--tx-1);border-color:var(--accent);background:rgba(36,224,194,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0) scale(.98);}
.btn-glow.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);}
.btn-arrow:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

/* ============ 徽章 ============ */
.badge-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;color:var(--accent);
  background:rgba(36,224,194,.12);border:1px solid rgba(36,224,194,.3);
}
.badge-pill.warm{color:var(--accent-2);background:rgba(255,155,74,.12);border-color:rgba(255,155,74,.32);}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;overflow:hidden;min-height:340px;display:flex;align-items:center;padding:56px 0;}
.cat-hero-bg{
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(100deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.78) 46%,rgba(7,11,20,.9) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.45),transparent);
}
.cat-hero-inner{max-width:780px;}
.crumb{font-size:14px;color:var(--tx-3);margin-bottom:14px;}
.crumb a{color:var(--tx-3);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{margin:0 8px;}
.crumb .now{color:var(--accent);}
.cat-hero h1{margin-bottom:16px;}
.cat-hero h1 .hl{color:var(--accent);}
.cat-hero .lead{font-size:17px;color:var(--tx-2);margin-bottom:22px;max-width:640px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(14px) saturate(120%);
  font-size:14px;color:var(--tx-2);box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.chip b{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section.tight{padding:56px 0;}
.sec-head{max-width:760px;margin-bottom:36px;}
.sec-head h2{position:relative;padding-bottom:14px;}
.sec-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),rgba(47,107,255,.5));
  box-shadow:0 0 12px rgba(36,224,194,.5);
}
.sec-head p{margin:14px 0 0;font-size:16px;}

/* ============ 图文交替 ============ */
.flow-list{display:flex;flex-direction:column;}
.flow-row{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:40px 0;border-bottom:1px solid rgba(120,180,255,.08);
}
.flow-row:last-child{border-bottom:0;}
.flow-row:nth-child(even) .flow-media{order:2;}
.flow-media{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--sh-card);aspect-ratio:16/10;background:var(--bg-2);
}
.flow-media img{width:100%;height:100%;object-fit:cover;}
.flow-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 45%,rgba(7,11,20,.55) 100%);
}
.flow-tag{display:inline-flex;margin-bottom:12px;}
.flow-text p{font-size:16px;line-height:1.85;}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.point-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--tx-1);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(36,224,194,.7);
}

/* ============ 更新维护 ============ */
.update-band{
  background:linear-gradient(180deg,rgba(12,19,34,.72),rgba(7,11,20,.2));
  border-top:1px solid rgba(120,180,255,.1);border-bottom:1px solid rgba(120,180,255,.1);
}
.update-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.update-item{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-m);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(120%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:transform .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
}
.update-item:hover{transform:translateY(-4px);border-color:rgba(36,224,194,.5);box-shadow:var(--sh-hover);}
.update-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:var(--r-s);
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,.14);border:1px solid rgba(120,180,255,.24);
  color:var(--accent);font-weight:700;font-size:15px;
}
.update-item h3{font-size:17px;margin-bottom:6px;}
.update-item p{font-size:14px;line-height:1.7;margin:0;}

/* ============ 转化条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:30px 32px;border-radius:var(--r-l);
  background:linear-gradient(120deg,rgba(36,224,194,.10),rgba(47,107,255,.12)),var(--glass);
  border:1px solid var(--glass-line);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
}
.cta-bar h3{font-size:clamp(18px,1.8vw,22px);margin-bottom:6px;}
.cta-bar p{margin:0;font-size:15px;max-width:620px;}

/* ============ FAQ ============ */
.faq-acc{max-width:920px;}
.faq-acc .accordion-item{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-m)!important;
  margin-bottom:14px;overflow:hidden;backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:border-color .25s ease-out,box-shadow .25s ease-out;
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(36,224,194,.45);}
.faq-acc .accordion-button{
  background:transparent;color:var(--tx-1);font-size:17px;font-weight:600;
  padding:18px 22px;box-shadow:none;border-left:3px solid transparent;
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:-2px;}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--accent);background:rgba(36,224,194,.07);
  border-left:3px solid var(--accent);box-shadow:0 0 18px rgba(36,224,194,.16) inset;
}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-size:22px;font-weight:700;line-height:1;color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease-out,color .25s ease-out;margin-left:16px;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-acc .accordion-body{padding:6px 22px 20px;font-size:15px;line-height:1.85;color:var(--tx-2);}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:start;}
.contact-points{display:flex;flex-direction:column;gap:14px;margin:22px 0;}
.contact-points li{position:relative;padding-left:30px;font-size:15px;color:var(--tx-1);}
.contact-points li::before{
  content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
  color:#04101C;background:linear-gradient(135deg,#24E0C2,#2F6BFF);
}
.trust-note{font-size:13px;color:var(--tx-3);}
.form-card{
  padding:28px;border-radius:var(--r-l);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
}
.form-row{margin-bottom:16px;}
.form-label-sm{display:block;font-size:13px;color:var(--tx-3);margin-bottom:8px;letter-spacing:.4px;}
.form-control,.form-select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-s);
  background:rgba(7,11,20,.72);border:1px solid var(--glass-line);
  color:var(--tx-1);font-size:15px;font-family:inherit;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:var(--tx-3);}
.form-control:focus,.form-select:focus{
  outline:none;background:rgba(7,11,20,.92);
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(36,224,194,.18);
  color:var(--tx-1);
}
.form-select option{background:#0C1322;color:var(--tx-1);}
.form-note{font-size:12px;color:var(--tx-3);margin:12px 0 0;}
.submit-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:6px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:24px;padding:64px 0 26px;
  background:linear-gradient(180deg,rgba(12,19,34,.86),rgba(7,11,20,.96));
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{font-size:18px;font-weight:800;color:var(--tx-1);display:inline-flex;margin-bottom:14px;}
.footer-brand:hover{color:var(--tx-1);}
.footer-desc{font-size:14px;line-height:1.75;color:var(--tx-2);margin-bottom:16px;max-width:320px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:10px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--tx-1);margin-bottom:16px;letter-spacing:.3px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:var(--tx-2);}
.footer-col ul li a:hover{color:var(--accent);transform:translateX(2px);display:inline-block;}
.footer-col.contact ul li span{color:var(--tx-3);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(120,180,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.fb-left{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--tx-3);}
.to-top{
  height:40px;padding:0 18px;border-radius:var(--r-pill);cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--tx-2);font-size:13px;
  transition:color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.to-top:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:991.98px){
  .site-header{height:60px;}
  .nav-inner{height:60px;}
  .nav-toggle{display:flex;}
  .nav-menu{
    position:absolute;top:60px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:12px 16px 18px;
    background:rgba(12,19,34,.97);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--glass-line);box-shadow:var(--sh-card);
    display:none;
  }
  .nav-menu.open{display:flex;}
  .nav-link-item{height:48px;padding:0 14px;border-left:3px solid transparent;border-radius:0;font-size:15px;}
  .nav-link-item::after{display:none;}
  .nav-link-item.active{border-left-color:var(--accent);background:rgba(36,224,194,.08);}
  .nav-right .nav-cta{display:none;}
  .section{padding:56px 0;}
  .flow-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .flow-row:nth-child(even) .flow-media{order:0;}
  .flow-media{aspect-ratio:16/9;}
  .update-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:40px 0;}
  .cat-hero{min-height:0;padding:40px 0;}
  .cat-hero .lead{font-size:16px;}
  .chip{height:34px;font-size:13px;padding:0 13px;}
  .cta-bar{padding:24px 20px;flex-direction:column;align-items:flex-start;}
  .cta-bar .btn-glow,.cta-bar .btn-ghost{width:100%;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  h1{font-size:27px;}
  .brand{font-size:17px;}
  .hero-chips{gap:9px;}
  .chip{width:100%;justify-content:flex-start;}
  .faq-acc .accordion-button{font-size:16px;padding:16px 18px;}
}
@media (prefers-reduced-transparency:reduce){
  .chip,.form-card,.update-item,.cta-bar,.faq-acc .accordion-item{background:rgba(12,19,34,.86);backdrop-filter:none;}
}
@supports not (backdrop-filter: blur(4px)){
  .chip,.form-card,.update-item,.cta-bar,.faq-acc .accordion-item,.site-header{background:rgba(12,19,34,.86);}
}

/* roulang page: category2 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1322;
  --bg-2:#111A2E;
  --brand:#2F6BFF;
  --accent:#24E0C2;
  --accent-2:#FF9B4A;
  --tx-1:#E8EEF9;
  --tx-2:#9BB0CC;
  --tx-3:#6B7F99;
  --ok:#2FD08A;
  --warn:#FFB020;
  --err:#FF5C6C;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(120,180,255,.14);
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(3,8,20,.55);
  --sh-hover:0 18px 44px rgba(3,8,20,.72);
  --glow:0 0 0 1px rgba(36,224,194,.45),0 8px 28px rgba(36,224,194,.26);
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-2;
  background:
    radial-gradient(680px 420px at 88% -6%, rgba(36,224,194,.10), transparent 68%),
    radial-gradient(720px 520px at 4% 62%, rgba(47,107,255,.12), transparent 70%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  background-image:
    repeating-linear-gradient(to right, rgba(120,180,255,.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(to bottom, rgba(120,180,255,.05) 0 1px, transparent 1px 40px);
  opacity:.75;
}
img{max-width:100%;display:block;border-radius:inherit}
a{color:var(--tx-2);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1400px){
  .container{max-width:1280px}
}

/* ============ header / nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:rgba(7,11,20,.86);
  backdrop-filter:blur(12px) saturate(120%);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.95);
  box-shadow:var(--sh-card);
}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  font-size:20px;
  font-weight:800;
  color:var(--tx-1);
  letter-spacing:-.4px;
  white-space:nowrap;
}
.brand:hover{color:var(--tx-1)}
.brand-sep{color:var(--tx-3);margin:0 2px}
.brand-hl{color:var(--accent);text-shadow:0 0 16px rgba(36,224,194,.45)}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 12px;
  font-size:15px;
  color:var(--tx-2);
  border-radius:var(--r-s);
  transition:color .2s ease,background .2s ease;
}
.nav-link-item::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:var(--r-pill);
  background:var(--accent);
  opacity:0;
  transform:translateY(3px);
  transition:opacity .2s ease,transform .2s ease;
}
.nav-link-item:hover{color:var(--tx-1);background:rgba(255,255,255,.04)}
.nav-link-item:hover::after{opacity:.5;transform:translateY(0)}
.nav-link-item.active{
  color:var(--accent);
  text-shadow:0 0 12px rgba(36,224,194,.5);
}
.nav-link-item.active::after{opacity:1;transform:translateY(0)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--glass-line);
  border-radius:var(--r-s);
  background:var(--glass);
  padding:0;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  margin:4px auto;
  border-radius:2px;
  background:var(--tx-1);
  transition:transform .25s ease,opacity .25s 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)}

/* ============ buttons / badges ============ */
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:0;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,#24E0C2,#2F6BFF);
  color:#04101C;
  font-weight:700;
  font-size:15px;
  cursor:pointer;
  transition:transform .25s ease,filter .25s ease,box-shadow .25s ease;
}
.btn-glow:hover{transform:translateY(-2px);filter:brightness(1.08);color:#04101C;box-shadow:var(--glow)}
.btn-glow:active{transform:translateY(0) scale(.98)}
.btn-glow.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border:1px solid rgba(120,180,255,.35);
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--tx-1);
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  transition:border-color .25s ease,background .25s ease,transform .25s ease;
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(36,224,194,.08);color:var(--tx-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--tx-2);
  text-decoration:none;
}
.link-arrow i{font-size:12px;transition:transform .2s ease}
.link-arrow:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.link-arrow:hover i{transform:translateX(3px)}

.badge-pill{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.5px;
  background:rgba(36,224,194,.12);
  color:var(--accent);
  border:1px solid rgba(36,224,194,.3);
}
.badge-pill.warm{
  background:rgba(255,155,74,.12);
  color:var(--accent-2);
  border-color:rgba(255,155,74,.32);
}
.badge-pill.soft{
  background:rgba(120,180,255,.10);
  color:var(--tx-2);
  border-color:rgba(120,180,255,.22);
}

/* ============ hero ============ */
.cat-hero{
  position:relative;
  min-height:300px;
  display:flex;
  align-items:center;
  overflow:hidden;
  padding:56px 0;
  border-bottom:1px solid rgba(120,180,255,.10);
}
.cat-hero .hero-visual{
  position:absolute;
  top:0;right:0;bottom:0;
  width:62%;
  background-image:url("/assets/images/coverpic/cover-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.5;
  -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,.95), transparent 96%);
  mask-image:linear-gradient(to left, rgba(0,0,0,.95), transparent 96%);
  pointer-events:none;
}
.cat-hero .hero-shade{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,11,20,.96) 0%,rgba(7,11,20,.86) 46%,rgba(7,11,20,.45) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:720px}
.hero-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.6px;
  color:var(--accent-2);
  background:rgba(255,155,74,.10);
  border:1px solid rgba(255,155,74,.30);
}
.cat-hero h1{
  margin-top:16px;
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.5px;
}
.cat-hero .hero-sub{
  margin-top:14px;
  font-size:16px;
  color:var(--tx-2);
  max-width:600px;
}
.hero-pills{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.metric-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  font-size:13px;
  color:var(--tx-2);
}
.metric-pill b{
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  font-weight:800;
}

/* ============ section base ============ */
.section{padding:72px 0}
.section.alt{background:linear-gradient(180deg,rgba(12,19,34,.65),rgba(7,11,20,0))}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.3;
  padding-bottom:14px;
  position:relative;
}
.sec-head h2::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:40px;height:3px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
}
.sec-head p{margin-top:14px;color:var(--tx-2);font-size:15px}
.sec-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}

/* ============ glass card ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  border-radius:var(--r-l);
}
.card-hover{transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.card-hover:hover{
  transform:translateY(-4px);
  border-color:rgba(36,224,194,.45);
  box-shadow:var(--sh-hover);
}

/* ============ feature cards ============ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.feature-card{
  padding:26px;
  border-radius:var(--r-l);
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  opacity:.85;
}
.feature-card .fc-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-m);
  background:rgba(36,224,194,.10);
  border:1px solid rgba(36,224,194,.26);
  color:var(--accent);
  font-size:18px;
}
.feature-card h3{
  margin-top:16px;
  font-size:19px;
  font-weight:600;
  line-height:1.45;
}
.feature-card p{margin-top:10px;font-size:14.5px;color:var(--tx-2)}
.feature-card .fc-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between}

/* ============ steps + sidebar ============ */
.steps-layout{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:28px;
  align-items:start;
}
.step-axis{position:relative;padding-left:8px}
.step-axis::before{
  content:"";
  position:absolute;
  left:29px;top:14px;bottom:26px;
  width:2px;
  background:linear-gradient(180deg,rgba(36,224,194,.65),rgba(47,107,255,.25),transparent);
}
.step-item{
  position:relative;
  display:grid;
  grid-template-columns:52px 1fr;
  gap:18px;
  padding-bottom:22px;
}
.step-dot{
  position:relative;
  z-index:2;
  width:44px;height:44px;
  margin-left:8px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:rgba(12,19,34,.94);
  border:1px solid rgba(36,224,194,.5);
  color:var(--accent);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 18px rgba(36,224,194,.22);
}
.step-card{
  padding:20px 22px;
  border-radius:var(--r-m);
}
.step-card h3{font-size:17.5px;font-weight:600;line-height:1.45}
.step-card p{margin-top:8px;font-size:14.5px;color:var(--tx-2)}
.step-card ul{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.side-col{position:sticky;top:92px;display:grid;gap:16px}
.side-card{
  padding:20px;
  border-radius:var(--r-m);
}
.side-card .sc-value{
  font-size:clamp(28px,3.4vw,40px);
  font-weight:800;
  line-height:1.1;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.side-card .sc-label{margin-top:6px;font-size:13.5px;color:var(--tx-2)}
.side-card .sc-bar{
  margin-top:14px;
  height:8px;
  border-radius:var(--r-pill);
  background:rgba(120,180,255,.14);
  overflow:hidden;
}
.side-card .sc-bar span{
  display:block;height:100%;border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--accent),var(--brand));
}
.side-note{
  font-size:13px;
  color:var(--tx-3);
  line-height:1.7;
}

/* ============ checklist ============ */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.check-card{
  padding:22px 24px;
  border-radius:var(--r-m);
  display:flex;
  gap:14px;
  align-items:flex-start;
}
.check-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:rgba(47,208,138,.12);
  border:1px solid rgba(47,208,138,.35);
  color:var(--ok);
  font-size:12px;
}
.check-card h3{font-size:16.5px;font-weight:600}
.check-card p{margin-top:6px;font-size:14.5px;color:var(--tx-2)}

/* ============ faq ============ */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-m);
  overflow:hidden;
  position:relative;
  background:rgba(12,19,34,.7);
  border:1px solid var(--glass-line);
  transition:background .25s ease,border-color .25s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--accent);
  opacity:0;
  box-shadow:0 0 16px rgba(36,224,194,.7);
  transition:opacity .25s ease;
}
.faq-item.open{background:rgba(17,26,46,.92);border-color:rgba(36,224,194,.35)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--tx-1);
  cursor:pointer;
}
.faq-q .faq-mark{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(120,180,255,.3);
  color:var(--accent);
  font-size:13px;
  transition:transform .25s ease,border-color .25s ease;
}
.faq-item.open .faq-mark{transform:rotate(45deg);border-color:rgba(36,224,194,.6)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--tx-2);
}

/* ============ form ============ */
.form-wrap{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:28px;
  align-items:center;
}
.form-side h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.3;
}
.form-side .fs-points{margin-top:22px;display:grid;gap:14px}
.form-side .fs-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--tx-2)}
.form-side .fs-points i{color:var(--accent);margin-top:6px;font-size:13px}
.form-side .fs-note{margin-top:18px;font-size:13px;color:var(--tx-3)}
.form-card{padding:28px;border-radius:var(--r-l)}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--tx-2)}
.form-control{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-s);
  background:rgba(7,11,20,.75);
  border:1px solid rgba(120,180,255,.2);
  color:var(--tx-1);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
textarea.form-control{
  height:auto;
  min-height:110px;
  padding:12px 14px;
  line-height:1.7;
  resize:vertical;
}
.form-control::placeholder{color:var(--tx-3)}
.form-control:focus{
  outline:none;
  background:rgba(7,11,20,.92);
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(36,224,194,.16);
}
.form-card .privacy{margin-top:14px;font-size:12.5px;color:var(--tx-3)}
.form-card .btn-glow{width:100%;margin-top:18px}

/* ============ cta band ============ */
.cta-band{padding:0 0 72px}
.cta-inner{
  padding:30px 32px;
  border-radius:var(--r-l);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-inner::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(520px 200px at 88% 0%, rgba(36,224,194,.14), transparent 70%);
  pointer-events:none;
}
.cta-inner h3{font-size:20px;font-weight:700;position:relative}
.cta-inner p{margin-top:6px;font-size:14.5px;color:var(--tx-2);position:relative}
.cta-inner .cta-actions{position:relative;display:flex;gap:12px;flex-wrap:wrap}

/* ============ footer ============ */
.site-footer{
  margin-top:40px;
  border-top:1px solid transparent;
  background:linear-gradient(180deg,rgba(12,19,34,.7),rgba(7,11,20,1));
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(36,224,194,.55),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:56px 0 36px;
}
.footer-brand{
  font-size:19px;
  font-weight:800;
  color:var(--tx-1);
}
.footer-brand:hover{color:var(--tx-1)}
.footer-desc{margin-top:14px;font-size:14px;color:var(--tx-2);max-width:320px}
.footer-tags{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--tx-1);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col li a,.footer-col li span{
  font-size:14px;
  color:var(--tx-2);
}
.footer-col li a{transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col li a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(120,180,255,.12);
  padding:18px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.fb-left{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--tx-3)}
.to-top{
  height:38px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-line);
  color:var(--tx-2);
  font-size:13px;
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.to-top:hover{color:var(--accent);border-color:rgba(36,224,194,.5);transform:translateY(-2px)}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .feature-grid{gap:18px}
  .steps-layout{grid-template-columns:1.45fr 1fr;gap:22px}
}
@media (max-width:991.98px){
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px 16px 18px;
    background:rgba(7,11,20,.97);
    backdrop-filter:blur(16px) saturate(120%);
    border-bottom:1px solid rgba(120,180,255,.14);
    box-shadow:var(--sh-card);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-link-item{
    height:48px;
    padding:0 14px;
    font-size:15.5px;
    border-left:3px solid transparent;
    border-radius:0 var(--r-s) var(--r-s) 0;
  }
  .nav-link-item::after{display:none}
  .nav-link-item:hover{background:rgba(255,255,255,.05)}
  .nav-link-item.active{
    border-left-color:var(--accent);
    background:rgba(36,224,194,.08);
  }
  .nav-cta{display:none}
  .hero-visual{width:100%;opacity:.3;mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 90%);-webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 90%)}
  .hero-shade{background:linear-gradient(180deg,rgba(7,11,20,.9),rgba(7,11,20,.72))}
  .steps-layout{grid-template-columns:1fr}
  .side-col{position:static;grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr 1fr}
  .form-wrap{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 30px}
  .section{padding:56px 0}
  .cta-band{padding:0 0 56px}
}
@media (max-width:767.98px){
  .nav-inner{height:60px}
  .brand{font-size:18px}
  .cat-hero{min-height:auto;padding:44px 0}
  .cat-hero h1{font-size:clamp(26px,7vw,34px)}
  .section{padding:40px 0}
  .feature-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .side-col{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-inner{padding:24px 20px}
  .form-card{padding:20px}
  .step-item{grid-template-columns:44px 1fr;gap:12px}
  .step-dot{width:38px;height:38px;margin-left:4px;font-size:14px}
  .step-axis::before{left:23px}
  .btn-glow,.btn-ghost{width:100%}
  .cta-actions{width:100%}
}
@media (max-width:575.98px){
  .container{padding:0 16px}
  body{font-size:15px}
  .cat-hero h1{font-size:25px}
  .sec-head h2{font-size:23px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px;font-size:14.5px}
  .metric-pill{height:34px;font-size:12.5px}
}

/* 玻璃降级 */
@media (prefers-reduced-transparency:reduce){
  .glass,.feature-card,.step-card,.side-card,.check-card,.form-card{
    background:rgba(12,19,34,.86);
    backdrop-filter:none;
  }
}
@supports not (backdrop-filter:blur(1px)){
  .glass,.feature-card,.step-card,.side-card,.check-card,.form-card{
    background:rgba(12,19,34,.86);
  }
}