/* roulang page: index */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --st-r-card:20px;
  --st-r-sm:14px;
  --st-r-input:12px;
  --st-r-img:16px;
  --st-shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --st-shadow-light:0 10px 30px rgba(12,18,34,.08);
  --st-ease:cubic-bezier(.2,.7,.3,1);
  --st-font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --st-mono:"SF Mono",ui-monospace,"JetBrains Mono","Roboto Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--st-font);font-size:16px;line-height:1.8;font-weight:400;background:var(--st-bg-0);color:var(--st-text);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--st-ease)}
img{max-width:100%;display:block;border:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--st-brand-2);outline-offset:3px}
.num{font-variant-numeric:tabular-nums;font-family:var(--st-mono)}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px}
.grid-margin-y>.cell{padding-top:12px;padding-bottom:12px}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#FFFFFF;border-bottom:1px solid #E6E9F2;box-shadow:0 8px 24px rgba(12,18,34,.06)}
.nav-wrap{max-width:1240px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:26px;height:26px;flex:0 0 auto;color:var(--st-brand)}
.brand-text{font-size:17px;font-weight:700;color:var(--st-light-text);letter-spacing:-.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;font-size:15px;font-weight:500;color:#33405C;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--st-brand),var(--st-brand-2));transform:scaleX(0);transform-origin:center;transition:transform .22s var(--st-ease)}
.nav-link:hover{color:var(--st-brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand);font-weight:600}
.nav-link.is-active::after{display:none}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:12px;width:16px;height:16px;color:#8C97B2;pointer-events:none}
.nav-search input{width:236px;height:40px;padding:0 14px 0 36px;border-radius:999px;background:#F4F6FC;border:1px solid transparent;color:#1B2438;font-size:14px;transition:border-color .2s var(--st-ease),box-shadow .2s var(--st-ease)}
.nav-search input::placeholder{color:#97A0B8}
.nav-search input:focus{border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.18);outline:none}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid #E6E9F2;align-items:center;justify-content:center;color:#1B2438}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;transition:all .22s var(--st-ease);white-space:nowrap}
.btn svg{width:16px;height:16px;flex:0 0 auto;transition:transform .22s var(--st-ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:linear-gradient(135deg,var(--st-brand),var(--st-brand-2));color:#fff;box-shadow:0 0 24px rgba(110,91,255,.40)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(110,91,255,.62)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(110,91,255,.55);color:#C6BEFF}
.btn-ghost:hover{background:rgba(110,91,255,.14);color:#fff}
.btn-block{width:100%}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--st-brand-2);font-weight:600;font-size:14px}
.btn-link svg{width:15px;height:15px;transition:transform .22s var(--st-ease)}
.btn-link:hover svg{transform:translateX(4px)}
.section-light .btn-ghost{color:#4B3BE0;border-color:rgba(110,91,255,.42)}
.section-light .btn-ghost:hover{background:rgba(110,91,255,.10);color:#372CB8}
.section-light .btn-link{color:#4B3BE0}

/* ---------- Badges ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:var(--st-text-2)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--st-cyan);box-shadow:0 0 10px rgba(34,227,195,.8)}
.pill-brand{border-color:rgba(110,91,255,.4);background:rgba(110,91,255,.12);color:#C6BEFF}
.pill-amber{border-color:rgba(255,138,61,.4);background:rgba(255,138,61,.12);color:#FFB787}
.badge{position:absolute;left:12px;top:12px;z-index:2;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(7,10,20,.72);border:1px solid rgba(255,255,255,.18);color:#E7ECFF;backdrop-filter:blur(6px)}
.section-light .badge{background:rgba(12,18,34,.78);color:#fff}

/* ---------- Sections ---------- */
.section{padding:88px 0;position:relative}
.section-dark{background:var(--st-bg-0)}
.section-dark-alt{background:var(--st-bg-1)}
.section-light{background:var(--st-light-bg);color:var(--st-light-text);--st-text:var(--st-light-text);--st-text-2:var(--st-light-text-2);--st-text-3:#7A8497;--st-line:rgba(12,18,34,.09)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-title{font-size:28px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--st-text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--st-brand-2);margin-bottom:14px}
.section-light .eyebrow{color:#4B3BE0}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:currentColor}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:560px;display:flex;align-items:center;overflow:hidden;background:#070A14 url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,10,20,.95) 0%,rgba(7,10,20,.82) 46%,rgba(7,10,20,.58) 100%)}
.hero::after{content:"";position:absolute;inset:0;opacity:.42;background-image:radial-gradient(1.4px 1.4px at 16% 24%,rgba(255,255,255,.75),transparent 60%),radial-gradient(1.2px 1.2px at 68% 18%,rgba(154,139,255,.75),transparent 60%),radial-gradient(1.2px 1.2px at 42% 72%,rgba(255,255,255,.55),transparent 60%),radial-gradient(1px 1px at 84% 62%,rgba(34,227,195,.7),transparent 60%);background-size:260px 260px,320px 320px,300px 300px,220px 220px;pointer-events:none}
.hero-inner{position:relative;z-index:2;width:100%;padding-top:72px;padding-bottom:72px}
.hero-grid{align-items:center}
.hero-copy{max-width:640px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.hero h1{font-size:46px;font-weight:800;line-height:1.2;letter-spacing:-.01em}
.hero h1 .kw{white-space:nowrap;background:linear-gradient(120deg,#FFFFFF 30%,var(--st-brand-2) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--st-text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:26px;border-top:1px solid var(--st-line)}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--st-text-2)}
.hero-trust svg{width:17px;height:17px;color:var(--st-cyan);flex:0 0 auto}

.glass-card{background:rgba(255,255,255,.06);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:26px;box-shadow:0 0 80px rgba(110,91,255,.25)}
.glass-card h2{font-size:17px;font-weight:700;margin-bottom:6px}
.glass-card .glass-note{font-size:13px;color:var(--st-text-3);margin-bottom:18px}
.quick-list li+li{margin-top:4px}
.quick-item{display:flex;align-items:center;gap:14px;padding:14px 12px;border-radius:14px;transition:background .2s var(--st-ease),transform .2s var(--st-ease)}
.quick-item:hover{background:rgba(255,255,255,.07);transform:translateX(3px)}
.quick-icon{width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(110,91,255,.18);border:1px solid rgba(110,91,255,.34);color:#C6BEFF;flex:0 0 auto}
.quick-icon svg{width:18px;height:18px}
.quick-text{flex:1 1 auto;min-width:0}
.quick-text strong{display:block;font-size:15px;font-weight:600;color:var(--st-text)}
.quick-text span{display:block;font-size:13px;color:var(--st-text-3);margin-top:2px}
.quick-arrow{color:var(--st-text-3);flex:0 0 auto}
.quick-arrow svg{width:15px;height:15px}
.glass-divider{height:1px;background:var(--st-line);margin:18px 0}
.glass-foot{font-size:13px;color:var(--st-text-3);margin-bottom:14px}

/* ---------- Tier ladder (light) ---------- */
.tier-grid{display:flex;align-items:flex-start;gap:0}
.tier{position:relative;flex:1 1 0;background:var(--st-light-card);border:1px solid rgba(12,18,34,.08);border-radius:var(--st-r-card);padding:26px 22px 24px;box-shadow:var(--st-shadow-light);transition:transform .22s var(--st-ease),box-shadow .22s var(--st-ease)}
.tier:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(12,18,34,.14)}
.tier:nth-child(1){margin-top:0}
.tier:nth-child(3){margin-top:24px}
.tier:nth-child(5){margin-top:48px}
.tier:nth-child(7){margin-top:72px}
.tier-num{font-family:var(--st-mono);font-size:34px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1.4px rgba(110,91,255,.55);letter-spacing:.02em}
.tier-name{margin-top:16px;font-size:18px;font-weight:600;color:var(--st-light-text)}
.tier-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--st-light-text-2)}
.tier-tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;margin-top:18px;font-size:12px;font-weight:600;background:rgba(110,91,255,.10);color:#4B3BE0}
.tier-link{flex:0 0 30px;align-self:flex-start;margin-top:56px;border-top:2px dashed rgba(12,18,34,.16);position:relative}
.tier-link::after{content:"";position:absolute;right:-1px;top:-5px;width:8px;height:8px;border-top:2px solid rgba(12,18,34,.26);border-right:2px solid rgba(12,18,34,.26);transform:rotate(45deg)}

/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:0;border:1px solid var(--st-line);border-radius:var(--st-r-card);overflow:hidden;background:var(--st-bg-1);box-shadow:var(--st-shadow-dark)}
.compare-col{padding:24px 18px;border-left:1px solid var(--st-line);position:relative;text-align:center}
.compare-col:first-child{border-left:0;text-align:left}
.compare-head{background:rgba(255,255,255,.02);border-bottom:1px solid var(--st-line)}
.compare-head .compare-col{padding-top:30px;padding-bottom:28px}
.plan-name{font-size:16px;font-weight:600;color:var(--st-text)}
.plan-figure{display:block;margin-top:12px;font-family:var(--st-mono);font-size:24px;font-weight:700;color:var(--st-text);font-variant-numeric:tabular-nums}
.compare-col.is-rec{background:linear-gradient(180deg,rgba(110,91,255,.16),rgba(110,91,255,.04));box-shadow:inset 0 0 0 1px rgba(110,91,255,.55),0 0 32px rgba(110,91,255,.24);transform:translateY(-16px);border-radius:18px}
.compare-col.is-rec .plan-figure{font-size:32px;background:linear-gradient(120deg,var(--st-brand-2),var(--st-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.rec-flag{position:absolute;top:-1px;right:14px;height:26px;padding:0 12px;display:inline-flex;align-items:center;font-size:12px;font-weight:700;color:#0B0716;background:linear-gradient(120deg,var(--st-brand-2),var(--st-cyan));border-radius:0 0 10px 10px}
.compare-row{display:contents}
.compare-row .rowname,.compare-row .rowcell{padding:16px 18px;border-top:1px solid var(--st-line);font-size:14px;text-align:center;display:flex;align-items:center;justify-content:center}
.compare-row .rowname{justify-content:flex-start;gap:10px;color:var(--st-text-2)}
.compare-row .rowname svg{width:16px;height:16px;color:var(--st-text-3);flex:0 0 auto}
.compare-row:nth-child(even) .rowname,.compare-row:nth-child(even) .rowcell{background:rgba(255,255,255,.02)}
.mark-yes{color:var(--st-cyan);font-weight:700}
.mark-no{color:var(--st-text-3)}
.compare-foot{display:contents}
.compare-foot .rowname,.compare-foot .rowcell{padding:22px 18px;border-top:1px solid var(--st-line);display:flex;align-items:center;justify-content:center}
.compare-foot .rowname{justify-content:flex-start;font-size:13px;color:var(--st-text-3)}
.compare-foot .btn{width:100%}
.compare-accordion{display:none}

/* ---------- Limited strip ---------- */
.strip{background:var(--st-bg-1);border-top:1px solid var(--st-line);border-bottom:1px solid var(--st-line);position:relative;overflow:hidden}
.strip::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--st-amber),rgba(255,138,61,.25));box-shadow:0 0 26px rgba(255,138,61,.55)}
.strip-inner{padding:34px 0;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.strip-copy{max-width:520px}
.strip-copy h2{font-size:22px;font-weight:700}
.strip-copy p{margin-top:8px;font-size:14px;color:var(--st-text-2)}
.countdown{display:flex;gap:10px}
.cd-cell{width:66px;padding:10px 0;border-radius:10px;background:var(--st-bg-2);border:1px solid var(--st-line);text-align:center}
.cd-num{display:block;font-family:var(--st-mono);font-size:24px;font-weight:700;line-height:1.2;color:#FFD9BF;text-shadow:0 0 18px rgba(255,138,61,.6);font-variant-numeric:tabular-nums}
.cd-unit{display:block;font-size:12px;color:var(--st-text-3);margin-top:2px}

/* ---------- News / CMS ---------- */
.news-feature .card-media{aspect-ratio:16/10}
.news-side{display:flex;flex-direction:column;gap:18px;height:100%}
.news-mini{display:flex;gap:14px;align-items:stretch;padding:12px;border-radius:var(--st-r-sm);background:var(--st-bg-1);border:1px solid var(--st-line);transition:transform .22s var(--st-ease),border-color .22s var(--st-ease)}
.section-light .news-mini{background:var(--st-light-card);border-color:rgba(12,18,34,.08);box-shadow:var(--st-shadow-light)}
.news-mini:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.55)}
.news-mini-media{width:132px;flex:0 0 132px;border-radius:12px;overflow:hidden;background:var(--st-bg-2)}
.news-mini-media img{width:100%;height:100%;object-fit:cover}
.news-mini-body{min-width:0;display:flex;flex-direction:column;gap:6px}
.news-mini-cat{font-size:12px;font-weight:600;color:var(--st-brand-2)}
.section-light .news-mini-cat{color:#4B3BE0}
.news-mini-title{font-size:15px;font-weight:600;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini-time{font-size:12px;color:var(--st-text-3);margin-top:auto;font-variant-numeric:tabular-nums}
.card-grid{margin-top:24px}
.card{position:relative;height:100%;display:flex;flex-direction:column;background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--st-r-card);overflow:hidden;transition:transform .22s var(--st-ease),border-color .22s var(--st-ease),box-shadow .22s var(--st-ease)}
.section-light .card{background:var(--st-light-card);border-color:rgba(12,18,34,.08);box-shadow:var(--st-shadow-light)}
.card:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.6);box-shadow:0 22px 48px rgba(0,0,0,.4)}
.section-light .card:hover{box-shadow:0 18px 40px rgba(12,18,34,.14)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--st-bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--st-ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,20,.28),rgba(7,10,20,0) 55%,rgba(7,10,20,.45));pointer-events:none}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.card-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--st-brand-2)}
.section-light .card:hover .card-title{color:#4B3BE0}
.card-text{margin-top:10px;font-size:14px;line-height:1.75;color:var(--st-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:16px;padding-top:12px;border-top:1px solid var(--st-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--st-text-3);font-variant-numeric:tabular-nums}
.card-foot svg{width:16px;height:16px;color:var(--st-brand-2)}
.empty-state{padding:56px 24px;text-align:center;border:1px dashed var(--st-line);border-radius:var(--st-r-card);background:rgba(255,255,255,.02)}
.section-light .empty-state{background:#fff;border-color:rgba(12,18,34,.14)}
.empty-state svg{width:34px;height:34px;color:var(--st-text-3);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--st-text-2);margin-bottom:18px}

/* ---------- Form ---------- */
.consult-info h2{font-size:28px;font-weight:700;line-height:1.3}
.consult-info p{margin-top:12px;font-size:15px;color:var(--st-text-2)}
.consult-points{margin-top:24px}
.consult-points li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--st-line);font-size:15px;color:var(--st-text-2)}
.consult-points svg{width:18px;height:18px;color:var(--st-cyan);flex:0 0 auto;margin-top:4px}
.contact-row{margin-top:24px;font-size:14px;color:var(--st-text-3);line-height:1.9}
.contact-row strong{color:var(--st-text);font-weight:600}
.form-card{background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--st-r-card);padding:28px;box-shadow:var(--st-shadow-dark)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--st-text-2);margin-bottom:8px}
.field .req{color:var(--st-amber)}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border-radius:var(--st-r-input);background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10);font-size:15px;color:var(--st-text);transition:border-color .2s var(--st-ease),box-shadow .2s var(--st-ease)}
.field textarea{height:auto;min-height:118px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--st-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.24);outline:none}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23AAB5D2' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px 16px}
.field select option{background:#0D1322;color:#F3F6FF}
.form-note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--st-text-3)}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{background:var(--st-light-card);border:1px solid rgba(12,18,34,.08);border-left:3px solid transparent;border-radius:var(--st-r-sm);margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--st-ease),box-shadow .2s var(--st-ease)}
.faq-item[open]{border-left-color:var(--st-brand);box-shadow:0 14px 32px rgba(12,18,34,.10)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--st-light-text);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:0 0 auto;width:10px;height:10px;border-right:2px solid #9AA4BF;border-bottom:2px solid #9AA4BF;transform:rotate(45deg);transition:transform .22s var(--st-ease),border-color .22s var(--st-ease)}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--st-brand)}
.faq-item[open] summary{color:#3A2FD0}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--st-light-text-2)}

/* ---------- Footer ---------- */
.site-footer{background:#05070F;border-top:1px solid rgba(255,255,255,.06);padding:64px 0 0;color:var(--st-text-2)}
.footer-grid{gap:0}
.footer-col{padding-right:24px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--st-brand-2)}
.footer-brand span{font-size:17px;font-weight:700;color:var(--st-text)}
.footer-desc{font-size:14px;line-height:1.9;color:var(--st-text-3);max-width:300px}
.footer-contact{margin-top:18px;font-size:14px;line-height:2;color:var(--st-text-3)}
.footer-contact strong{color:var(--st-text-2);font-weight:600}
.footer-title{font-size:14px;font-weight:600;color:var(--st-text);margin-bottom:18px}
.footer-links li+li{margin-top:11px}
.footer-links a{position:relative;display:inline-block;font-size:14px;color:var(--st-text-3);padding-left:0;transition:color .2s var(--st-ease),padding-left .2s var(--st-ease)}
.footer-links a::before{content:"";position:absolute;left:-10px;top:50%;width:6px;height:1px;background:var(--st-brand-2);opacity:0;transition:opacity .2s var(--st-ease)}
.footer-links a:hover{color:#fff;padding-left:8px}
.footer-links a:hover::before{opacity:1}
.footer-bottom{margin-top:54px;border-top:1px solid rgba(255,255,255,.06);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;font-size:12px;color:var(--st-text-3)}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a:hover{color:#fff}

/* ---------- Reveal ---------- */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--st-ease),transform .5s var(--st-ease)}
.reveal-up.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal-up{opacity:1;transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .section{padding:64px 0}
  .hero h1{font-size:38px}
  .nav-search input{width:180px}
  .nav-main{gap:0}
  .nav-link{padding:0 10px;font-size:14px}
  .tier-grid{flex-direction:column;gap:0;position:relative;padding-left:26px}
  .tier-grid::before{content:"";position:absolute;left:6px;top:12px;bottom:12px;width:2px;background:rgba(12,18,34,.12)}
  .tier{width:100%;margin-top:0!important;margin-bottom:16px}
  .tier::before{content:"";position:absolute;left:-26px;top:30px;width:12px;height:12px;border-radius:50%;background:var(--st-light-card);border:2px solid var(--st-brand)}
  .tier-link{display:none}
  .compare-grid{display:none}
  .compare-accordion{display:block}
  .plan-card{background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--st-r-card);margin-bottom:14px;overflow:hidden}
  .plan-card.is-rec{border-color:rgba(110,91,255,.55);box-shadow:0 0 30px rgba(110,91,255,.22)}
  .plan-card summary{list-style:none;cursor:pointer;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .plan-card summary::-webkit-details-marker{display:none}
  .plan-card summary::after{content:"";width:10px;height:10px;border-right:2px solid var(--st-text-2);border-bottom:2px solid var(--st-text-2);transform:rotate(45deg);transition:transform .2s var(--st-ease)}
  .plan-card[open] summary::after{transform:rotate(-135deg)}
  .plan-card .plan-body{padding:0 20px 18px}
  .plan-body li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-top:1px solid var(--st-line);font-size:14px;color:var(--st-text-2)}
  .plan-body li span:last-child{color:var(--st-text)}
}
@media (max-width:880px){
  .nav-main{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{gap:16px;justify-content:space-between}
  .nav-drawer{display:none;position:fixed;inset:56px 0 0 0;background:#fff;z-index:99;padding:12px 20px 24px;overflow-y:auto}
  .nav-drawer.is-open{display:block}
  .drawer-link{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:17px;font-weight:500;color:#1B2438;border-bottom:1px solid #EDF0F7}
  .drawer-link.is-active{color:var(--st-brand);font-weight:600}
  .drawer-cta{margin-top:20px}
  .news-feature{margin-bottom:20px}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .section-head.split{flex-direction:column;align-items:flex-start;gap:12px}
  .section-title{font-size:23px}
  .hero{min-height:auto}
  .hero-inner{padding-top:52px;padding-bottom:52px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-trust{gap:14px;flex-direction:column}
  .glass-card{margin-top:28px;padding:20px}
  .strip-inner{padding:26px 0;gap:20px}
  .cd-cell{width:58px}
  .cd-num{font-size:20px}
  .news-mini-media{width:104px;flex:0 0 104px}
  .form-card{padding:20px}
  .consult-info h2{font-size:23px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .hero h1{font-size:26px}
  .brand-text{font-size:15px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .hero-actions .btn{width:100%}
  .countdown{gap:8px}
  .cd-cell{width:52px}
  .news-mini{flex-direction:column}
  .news-mini-media{width:100%;flex:0 0 auto;aspect-ratio:16/9}
  .footer-col{padding-right:0;margin-bottom:28px}
}

/* roulang page: category1 */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-line-strong:rgba(255,255,255,.16);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --st-light-line:#E6E9F2;
  --st-radius-card:20px;
  --st-radius-sm:14px;
  --st-radius-img:16px;
  --st-shadow-dark:0 20px 60px rgba(0,0,0,.45), 0 0 0 1px rgba(110,91,255,.30);
  --st-shadow-light:0 10px 30px rgba(12,18,34,.08);
  --st-glow:0 0 24px rgba(110,91,255,.40);
  --st-ease:cubic-bezier(.2,.7,.3,1);
  --st-nav-h:64px;
  --st-font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --st-font-num:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--st-font);
  font-size:16px;
  line-height:1.8;
  color:var(--st-text);
  background:var(--st-bg-0);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--st-brand-2)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(110,91,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--st-brand-2);outline-offset:3px;border-radius:6px}

/* ---------- 容器 ---------- */
.grid-container.st-container{max-width:1240px;padding-left:24px;padding-right:24px;width:100%}
.st-container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:all .22s var(--st-ease);white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{
  background:linear-gradient(120deg,var(--st-brand) 0%,var(--st-brand-2) 100%);
  color:#fff;box-shadow:var(--st-glow);border-color:transparent;
}
.btn-primary:hover{filter:brightness(1.08);color:#fff;box-shadow:0 0 32px rgba(110,91,255,.62)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:rgba(110,91,255,.60);color:#C9C2FF;
}
.btn-ghost:hover{background:rgba(110,91,255,.10);color:#fff;border-color:var(--st-brand-2)}
.btn-ghost-dark{border-color:rgba(110,91,255,.45);color:var(--st-brand);background:rgba(110,91,255,.06)}
.btn-ghost-dark:hover{background:rgba(110,91,255,.14);color:#4B39D6}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--st-brand-2);
  font-size:14px;font-weight:600;transition:all .2s var(--st-ease);
}
.btn-link svg{transition:transform .2s var(--st-ease)}
.btn-link:hover{color:#fff}
.btn-link:hover svg{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#FFFFFF;
  border-bottom:1px solid var(--st-light-line);
  box-shadow:0 8px 24px rgba(12,18,34,.06);
}
.nav-inner{
  display:flex;align-items:center;gap:22px;height:var(--st-nav-h);
  max-width:1240px;margin:0 auto;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;flex-shrink:0}
.brand-text{font-size:17px;font-weight:700;color:#0C1222;letter-spacing:.01em}
.brand:hover .brand-text{color:var(--st-brand)}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:34px;padding:0 12px;
  font-size:15px;font-weight:500;color:#33405C;border-radius:999px;
  transition:color .2s var(--st-ease),background .2s var(--st-ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--st-brand),var(--st-cyan));
  border-radius:2px;transition:left .22s var(--st-ease),right .22s var(--st-ease);
}
.nav-link:hover{color:var(--st-brand)}
.nav-link:hover::after{left:12px;right:12px}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand);font-weight:600}
.nav-link.is-active::after{display:none}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{position:relative}
.nav-search input{
  width:212px;height:40px;padding:0 16px 0 38px;border-radius:999px;
  background:#F4F6FC;border:1px solid transparent;color:#0C1222;font-size:14px;
  transition:all .2s var(--st-ease);
}
.nav-search input::placeholder{color:#8892AB}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--st-brand);
  box-shadow:0 0 0 3px rgba(110,91,255,.18);
}
.nav-search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:#8892AB}
.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--st-light-line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:#33405C;border-radius:2px;transition:all .2s var(--st-ease)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;inset:var(--st-nav-h) 0 0 0;background:#fff;z-index:99;
  padding:8px 20px 90px;overflow-y:auto;
}
.mobile-drawer[hidden]{display:none}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;color:#26334D;border-bottom:1px solid #EDEFF6;
}
.mobile-drawer a.is-active{color:var(--st-brand);font-weight:600}
.mobile-drawer .drawer-cta{position:fixed;left:0;right:0;bottom:0;padding:14px 20px 22px;background:#fff;border-top:1px solid #EDEFF6}
.mobile-drawer .drawer-cta .btn{width:100%}

/* ---------- 面包屑 ---------- */
.crumb-wrap{background:var(--st-bg-0);padding:20px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--st-text-3)}
.crumb a{color:var(--st-text-3)}
.crumb a:hover{color:var(--st-brand-2)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--st-brand-2)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;min-height:366px;display:flex;align-items:center;
  background-image:
    linear-gradient(95deg,rgba(7,10,20,.95) 0%,rgba(7,10,20,.78) 46%,rgba(7,10,20,.52) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(2px 2px at 12% 28%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(2px 2px at 78% 22%,rgba(154,139,255,.65),transparent 60%),
    radial-gradient(1.5px 1.5px at 46% 74%,rgba(34,227,195,.55),transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 68%,rgba(255,255,255,.40),transparent 60%);
  opacity:.5;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;padding:48px 0}
.eyebrow-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.36);color:#C6BEFF;
}
.pill.is-cyan{background:rgba(34,227,195,.10);border-color:rgba(34,227,195,.34);color:#8DF0DE}
.pill.is-amber{background:rgba(255,138,61,.10);border-color:rgba(255,138,61,.34);color:#FFC398}
.dot{width:6px;height:6px;border-radius:50%;background:var(--st-cyan);box-shadow:0 0 10px rgba(34,227,195,.9)}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.2;letter-spacing:-.01em;
  max-width:820px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--st-brand-2),var(--st-cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero p.lead{
  margin-top:16px;max-width:660px;font-size:17px;line-height:1.8;color:var(--st-text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- 区块通用 ---------- */
.sec{padding:88px 0}
.sec-dark{background:var(--st-bg-0)}
.sec-dark-alt{background:var(--st-bg-1);border-top:1px solid var(--st-line);border-bottom:1px solid var(--st-line)}
.sec-light{background:var(--st-light-bg);color:var(--st-light-text)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--st-brand-2);margin-bottom:12px;
}
.sec-light .sec-tag{color:var(--st-brand)}
.sec-head h2{
  font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.32;letter-spacing:-.01em;
}
.sec-light .sec-head h2{color:var(--st-light-text)}
.sec-head p{margin-top:14px;font-size:16px;color:var(--st-text-2)}
.sec-light .sec-head p{color:var(--st-light-text-2)}

/* ---------- Zigzag ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;column-gap:56px;row-gap:72px;align-items:center}
.zig-row{display:grid;grid-template-columns:1fr 1fr;column-gap:56px;align-items:center;grid-column:1 / -1}
.zig-media{position:relative;border-radius:var(--st-radius-img);overflow:hidden;border:1px solid var(--st-line)}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.zig-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,20,0) 40%,rgba(7,10,20,.72) 100%);
}
.zig-media .media-tag{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:6px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(7,10,20,.66);border:1px solid var(--st-line-strong);color:#DAD4FF;
  backdrop-filter:blur(6px);
}
.zig-body h3{font-size:21px;font-weight:700;line-height:1.4}
.zig-body .zig-no{
  font-family:var(--st-font-num);font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--st-brand-2);display:block;margin-bottom:10px;
}
.zig-body p{margin-top:14px;font-size:15.5px;color:var(--st-text-2)}
.zig-list{margin-top:20px;display:grid;gap:12px}
.zig-list li{
  display:flex;gap:11px;align-items:flex-start;
  padding:13px 16px;border-radius:var(--st-radius-sm);
  background:var(--st-bg-1);border:1px solid var(--st-line);
  font-size:14.5px;color:var(--st-text-2);
  transition:transform .22s var(--st-ease),border-color .22s var(--st-ease);
}
.zig-list li:hover{transform:translateY(-2px);border-color:rgba(110,91,255,.45)}
.zig-list li svg{flex-shrink:0;width:17px;height:17px;margin-top:4px;stroke:var(--st-cyan)}
.zig-row.is-reverse .zig-media{order:2}
.zig-row.is-reverse .zig-body{order:1}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{
  position:relative;background:var(--st-light-card);border:1px solid var(--st-light-line);
  border-radius:var(--st-radius-card);padding:26px 22px 24px;
  box-shadow:var(--st-shadow-light);
  transition:transform .22s var(--st-ease),box-shadow .22s var(--st-ease);
}
.step:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(12,18,34,.12)}
.step-no{
  font-family:var(--st-font-num);font-size:30px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px var(--st-brand);letter-spacing:.02em;
}
.step h3{margin-top:16px;font-size:17px;font-weight:700;color:var(--st-light-text)}
.step p{margin-top:10px;font-size:14.5px;color:var(--st-light-text-2);line-height:1.75}
.step .step-meta{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:12px;font-weight:600;color:var(--st-brand);
  background:rgba(110,91,255,.10);border-radius:999px;padding:5px 12px;
}
.step::after{
  content:"";position:absolute;right:-22px;top:52px;width:22px;
  border-top:2px dashed rgba(110,91,255,.42);
}
.steps .step:last-child::after{display:none}

/* ---------- 异常速查（浅色区） ---------- */
.trouble-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.trouble-aside{position:sticky;top:96px}
.trouble-aside .note{
  margin-top:22px;padding:20px;border-radius:var(--st-radius-sm);
  background:#fff;border:1px solid var(--st-light-line);box-shadow:var(--st-shadow-light);
  font-size:14.5px;color:var(--st-light-text-2);
}
.trouble-aside .note strong{color:var(--st-light-text)}
.trouble-list{display:grid;gap:14px}
.trouble-item{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  padding:20px 22px;border-radius:var(--st-radius-card);
  background:#fff;border:1px solid var(--st-light-line);
  box-shadow:0 4px 14px rgba(12,18,34,.05);
  transition:transform .22s var(--st-ease),border-color .22s var(--st-ease);
}
.trouble-item:hover{transform:translateY(-3px);border-color:rgba(110,91,255,.42)}
.trouble-item .idx{
  font-family:var(--st-font-num);font-size:13px;font-weight:700;
  color:var(--st-brand);background:rgba(110,91,255,.10);
  border-radius:8px;padding:4px 9px;
}
.trouble-item h3{font-size:16.5px;font-weight:700;color:var(--st-light-text)}
.trouble-item p{margin-top:8px;font-size:14.5px;color:var(--st-light-text-2)}
.trouble-item .tag-line{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(110,91,255,.08);
  border:1px solid rgba(110,91,255,.22);color:#4B39D6;
}
.tag.is-amber{background:rgba(255,138,61,.10);border-color:rgba(255,138,61,.28);color:#B85E1F}
.tag.is-cyan{background:rgba(34,227,195,.12);border-color:rgba(34,227,195,.30);color:#0E7A69}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;background:var(--st-bg-1);border-top:1px solid var(--st-line);border-bottom:1px solid var(--st-line)}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--st-amber),rgba(255,138,61,.15));
  box-shadow:0 0 22px rgba(255,138,61,.5);
}
.cta-inner{
  display:grid;grid-template-columns:1.4fr .9fr;gap:40px;align-items:center;
  padding:56px 0;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.36}
.cta-inner p{margin-top:12px;font-size:15.5px;color:var(--st-text-2);max-width:560px}
.cta-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.fact{
  display:flex;align-items:center;gap:9px;padding:10px 16px;border-radius:var(--st-radius-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--st-line);font-size:13.5px;color:var(--st-text-2);
}
.fact b{color:var(--st-text);font-weight:600}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch}
.cta-actions .btn{width:100%}
.cta-actions .hint{font-size:13px;color:var(--st-text-3);text-align:center}

/* ---------- 页脚 ---------- */
.site-footer{background:#05070F;border-top:1px solid rgba(255,255,255,.06);padding-top:64px}
.footer-grid{row-gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-brand span{font-size:16.5px;font-weight:700;color:#F3F6FF}
.footer-desc{font-size:14px;line-height:1.85;color:var(--st-text-2);max-width:320px}
.footer-contact{margin-top:18px;font-size:13.5px;line-height:2;color:var(--st-text-3)}
.footer-contact strong{color:var(--st-text-2);font-weight:600}
.footer-title{font-size:14px;font-weight:600;color:#E7ECFF;margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{
  position:relative;font-size:14px;color:var(--st-text-2);padding-left:0;
  transition:color .2s var(--st-ease),padding-left .2s var(--st-ease);
}
.footer-links a:hover{color:#fff;padding-left:12px}
.footer-links a:hover::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--st-brand-2);
}
.footer-bottom{
  margin-top:48px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.06);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--st-text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--st-text-3)}
.footer-bottom a:hover{color:var(--st-brand-2)}

/* ---------- 表单 ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--st-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10);
  border-radius:12px;padding:0 16px;height:48px;color:var(--st-text);font-size:15px;
  transition:border-color .2s var(--st-ease),box-shadow .2s var(--st-ease);
}
.field textarea{height:auto;min-height:118px;padding:13px 16px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8C97B8 50%),linear-gradient(135deg,#8C97B8 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:#6C7796}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.20);
}
.form-note{font-size:12px;color:var(--st-text-3);margin-top:12px;line-height:1.7}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity .5s var(--st-ease),transform .5s var(--st-ease)}
@media (prefers-reduced-motion:reduce){
  .reveal,.reveal.is-visible{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition-duration:.01ms!important}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .nav-search{display:none}
}
@media screen and (max-width:1080px){
  .nav-main{display:none}
  .hamburger{display:flex}
  .nav-tools .btn-primary{display:none}
  .nav-inner{gap:14px}
}
@media screen and (max-width:1024px){
  .sec{padding:64px 0}
  .zig-row{grid-template-columns:1fr;row-gap:28px}
  .zig-row.is-reverse .zig-media{order:1}
  .zig-row.is-reverse .zig-body{order:2}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .trouble-grid{grid-template-columns:1fr;gap:32px}
  .trouble-aside{position:static}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:48px 0}
}
@media screen and (max-width:768px){
  body{font-size:15px}
  .grid-container.st-container,.st-container{padding-left:16px;padding-right:16px}
  .page-hero{min-height:320px}
  .page-hero-inner{padding:36px 0}
  .page-hero p.lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .sec{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .steps{grid-template-columns:1fr;gap:14px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:520px){
  .page-hero h1{font-size:28px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .step{padding:22px 18px}
  .trouble-item{padding:18px;grid-template-columns:1fr;gap:10px}
}

/* roulang page: article */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --st-light-line:#E6E9F2;
  --r-card:20px;
  --r-sm:14px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:16px;
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --shadow-light:0 10px 30px rgba(12,18,34,.08);
  --glow:0 0 24px rgba(110,91,255,.40);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"SF Mono",ui-monospace,Menlo,Consolas,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:15.5px;
  line-height:1.8;
  color:var(--st-text);
  background:var(--st-bg-0);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--st-brand);outline-offset:3px;border-radius:6px;}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  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:600;letter-spacing:.2px;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),filter var(--t) var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,var(--st-brand),var(--st-brand-2));
  color:#fff;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(110,91,255,.55);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border:1px solid rgba(110,91,255,.6);color:var(--st-brand-2);background:transparent;
}
.btn-ghost:hover{background:rgba(110,91,255,.10);color:#fff;}
.btn-light{
  background:#fff;color:var(--st-light-text);border:1px solid var(--st-light-line);
  box-shadow:var(--shadow-light);
}
.btn-light:hover{border-color:var(--st-brand);color:var(--st-brand);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--st-brand-2);
  font-size:14px;font-weight:600;
}
.btn-link svg{transition:transform var(--t) var(--ease);}
.btn-link:hover{color:#fff;}
.btn-link:hover svg{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-cat{background:rgba(110,91,255,.14);color:var(--st-brand-2);border:1px solid rgba(110,91,255,.3);}
.badge-live{background:rgba(34,227,195,.12);color:var(--st-cyan);border:1px solid rgba(34,227,195,.28);}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--st-cyan);}
.badge-amber{background:rgba(255,138,61,.14);color:var(--st-amber);border:1px solid rgba(255,138,61,.3);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--st-light-line);
  box-shadow:0 8px 24px rgba(12,18,34,.06);
}
.nav-wrap{
  max-width:1240px;margin:0 auto;padding:0 24px;
  height:64px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:28px;height:28px;flex-shrink:0;}
.brand-text{font-size:17px;font-weight:700;color:var(--st-light-text);letter-spacing:-.01em;white-space:nowrap;}
.nav-main{display:flex;align-items:center;gap:4px;flex:1;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:#33405C;white-space:nowrap;
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:linear-gradient(90deg,var(--st-brand),var(--st-cyan));
  transform:scaleX(0);transform-origin:center;transition:transform var(--t) var(--ease);
}
.nav-link:hover{color:var(--st-brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand);}
.nav-link.is-active::after{display:none;}
.nav-side{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search svg{position:absolute;left:12px;width:15px;height:15px;color:var(--st-text-3);}
.nav-search input{
  width:210px;height:40px;padding:0 14px 0 34px;
  border-radius:var(--r-pill);border:1px solid transparent;background:var(--st-light-bg);
  font-size:14px;color:var(--st-light-text);outline:none;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-search input::placeholder{color:#8A93A8;}
.nav-search input:focus{background:#fff;border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.16);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:var(--st-light-bg);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#33405C;transition:transform var(--t) var(--ease),opacity var(--t) var(--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);}
.mobile-drawer{
  position:fixed;inset:56px 0 0;z-index:99;background:#fff;
  padding:12px 20px 100px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease);
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:17px;font-weight:500;color:#33405C;
  padding:16px 4px;border-bottom:1px solid var(--st-light-line);
}
.mobile-drawer a:hover{color:var(--st-brand);}
.mobile-drawer .drawer-cta{
  margin-top:24px;display:flex;justify-content:center;
  background:linear-gradient(120deg,var(--st-brand),var(--st-brand-2));
  color:#fff;border-radius:var(--r-pill);height:50px;border-bottom:0;font-weight:600;
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--st-bg-1) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:26px 0 60px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,20,.94) 0%,rgba(7,10,20,.86) 45%,rgba(7,10,20,.97) 100%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;opacity:.42;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px),radial-gradient(rgba(154,139,255,.22) 1px,transparent 1px);
  background-size:120px 120px,190px 190px;
  background-position:0 0,60px 80px;
}
.article-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--st-text-3);margin-bottom:26px;
}
.breadcrumb a{color:var(--st-text-2);}
.breadcrumb a:hover{color:var(--st-brand-2);}
.breadcrumb .sep{color:var(--st-text-3);opacity:.7;}
.breadcrumb .current{color:var(--st-brand-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{max-width:920px;}
.article-head .badge{margin-bottom:18px;}
.article-head h1{
  font-size:36px;font-weight:800;line-height:1.24;letter-spacing:-.01em;
  color:#fff;margin-bottom:20px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:var(--st-text-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--st-text-3);opacity:.7;}

/* ---------- 文章主体 ---------- */
.article-main{background:var(--st-light-bg);padding:56px 0 72px;}
.article-col{position:relative;}
.article-body{
  max-width:820px;
  background:var(--st-light-card);
  border:1px solid var(--st-light-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-light);
  padding:44px 48px 40px;
  color:var(--st-light-text-2);
  font-size:16.5px;
  line-height:1.9;
  overflow-wrap:break-word;
}
.article-body>p:first-child{font-size:17.5px;color:var(--st-light-text);}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;color:var(--st-light-text);
  margin:44px 0 18px;padding-left:16px;scroll-margin-top:92px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--st-brand),var(--st-brand-2));
}
.article-body h3{font-size:20px;font-weight:700;color:var(--st-light-text);margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--st-light-text);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:22px;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin-bottom:9px;}
.article-body li::marker{color:var(--st-brand);}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:rgba(110,91,255,.08);
  border-left:4px solid var(--st-brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--st-light-text);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:26px auto;}
.article-body figure{margin:26px 0;}
.article-body figure img{margin:0 auto 10px;}
.article-body figcaption{font-size:13px;color:#7A8598;text-align:center;}
.article-body a{color:var(--st-brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#4B39E0;}
.article-body strong{color:var(--st-light-text);font-weight:700;}
.article-body hr{border:0;height:1px;background:var(--st-light-line);margin:34px 0;}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:#F1F0FF;color:var(--st-brand);
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--st-bg-1);color:var(--st-text);border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;margin:24px 0;font-family:var(--font-num);font-size:14px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--st-light-line);border-radius:var(--r-sm);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--st-light-line);}
.article-body th{background:#F1F0FF;color:var(--st-light-text);font-weight:600;white-space:nowrap;}
.article-body tbody tr:nth-child(even){background:#F8F9FD;}
.article-body tbody tr:last-child td{border-bottom:0;}

.empty-state{
  text-align:center;padding:36px 20px;color:var(--st-light-text-2);
}
.empty-state svg{width:52px;height:52px;margin:0 auto 18px;color:var(--st-brand);opacity:.7;}
.empty-state h2{font-size:20px;color:var(--st-light-text);margin-bottom:10px;}
.empty-state p{margin-bottom:22px;font-size:15px;}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:30px;}
.tag-row .tag-label{font-size:13px;color:var(--st-light-text-2);font-weight:600;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--st-light-line);
  font-size:13px;font-weight:600;color:var(--st-light-text-2);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.tag:hover{border-color:var(--st-brand);color:var(--st-brand);transform:translateY(-2px);}

/* ---------- 侧边栏 ---------- */
.sidebar-col{position:relative;}
.sidebar-inner{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--st-light-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-light);padding:22px 22px 24px;
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--st-light-text);
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--st-brand),var(--st-cyan));}
.toc-list li+li{margin-top:2px;}
.toc-list a{
  display:block;padding:8px 10px 8px 12px;border-radius:10px;
  font-size:14px;color:var(--st-light-text-2);line-height:1.6;
  border-left:2px solid transparent;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.toc-list a:hover{background:#F4F6FC;color:var(--st-brand);border-left-color:var(--st-brand);}
.side-links li+li{border-top:1px dashed var(--st-light-line);}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 2px;font-size:14px;font-weight:500;color:var(--st-light-text-2);
}
.side-links a span.idx{
  font-family:var(--font-num);font-size:12px;font-weight:700;color:var(--st-brand);
  background:rgba(110,91,255,.12);width:22px;height:22px;border-radius:7px;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.side-links a em{font-style:normal;flex:1;text-align:left;}
.side-links a svg{width:14px;height:14px;color:var(--st-text-3);transition:transform var(--t) var(--ease),color var(--t) var(--ease);}
.side-links a:hover{color:var(--st-brand);}
.side-links a:hover svg{transform:translateX(4px);color:var(--st-brand);}
.side-note{
  background:linear-gradient(150deg,#141B2E,#0D1322);
  border:1px solid rgba(110,91,255,.28);
  border-radius:var(--r-card);padding:22px;
  box-shadow:var(--shadow-dark);
}
.side-note h3{color:#fff;}
.side-note p{font-size:14px;line-height:1.8;color:var(--st-text-2);margin-bottom:16px;}

/* ---------- 继续查看 ---------- */
.related{background:var(--st-light-bg);padding:0 0 84px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;
}
.section-head h2{font-size:26px;font-weight:700;color:var(--st-light-text);}
.section-head p{font-size:14px;color:var(--st-light-text-2);margin-top:6px;}
.card-grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr);}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--st-light-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-light);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--st-brand);box-shadow:0 18px 44px rgba(110,91,255,.16);}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.card:hover .card-cover img{transform:scale(1.04);}
.card-cover .badge{position:absolute;left:12px;top:12px;background:rgba(13,19,34,.72);color:#fff;border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(6px);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:17px;font-weight:600;color:var(--st-light-text);line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:14px;color:var(--st-light-text-2);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--st-light-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--st-text-3);
}
.card-foot svg{width:14px;height:14px;transition:transform var(--t) var(--ease);}
.card:hover .card-foot svg{transform:translateX(4px);color:var(--st-brand);}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--st-bg-1);
  border-top:1px solid var(--st-line);
  padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background:radial-gradient(600px 200px at 15% 0%,rgba(110,91,255,.30),transparent 70%),
             radial-gradient(500px 220px at 85% 100%,rgba(34,227,195,.16),transparent 70%);
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner h2{font-size:26px;color:#fff;margin-bottom:8px;}
.cta-inner p{font-size:15px;color:var(--st-text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#05070F;border-top:1px solid rgba(255,255,255,.06);padding:64px 0 0;}
.footer-grid{row-gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:26px;height:26px;}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--st-text-2);margin-bottom:16px;}
.footer-contact{font-size:13px;line-height:1.9;color:var(--st-text-3);}
.footer-contact strong{color:var(--st-text-2);font-weight:600;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{
  position:relative;display:inline-block;font-size:14px;color:var(--st-text-2);padding-left:0;
  transition:color var(--t) var(--ease),padding-left var(--t) var(--ease);
}
.footer-links a::before{
  content:"";position:absolute;left:-10px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--st-brand);transform:translateY(-50%) scale(0);transition:transform var(--t) var(--ease);
}
.footer-links a:hover{color:#fff;padding-left:10px;}
.footer-links a:hover::before{transform:translateY(-50%) scale(1);}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--st-text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom a{color:var(--st-text-3);}
.footer-bottom a:hover{color:var(--st-brand-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .article-head h1{font-size:30px;}
  .article-body{padding:34px 30px 32px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .sidebar-inner{position:static;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .nav-wrap{padding:0 16px;height:56px;gap:16px;}
  .mobile-drawer{inset:56px 0 0;}
  .article-hero{padding:20px 0 44px;}
  .article-head h1{font-size:27px;}
  .article-main{padding:36px 0 48px;}
  .article-body{font-size:16px;padding:26px 20px 26px;border-radius:16px;}
  .article-body h2{font-size:21px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-inner h2{font-size:22px;}
  .related{padding-bottom:56px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .article-head h1{font-size:24px;}
  .breadcrumb{font-size:13px;}
  .breadcrumb .current{max-width:180px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .side-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --r-card:20px;
  --r-sm:14px;
  --r-pill:999px;
  --r-input:12px;
  --shadow-dark:0 20px 60px rgba(0,0,0,.45), 0 0 0 1px rgba(110,91,255,.30);
  --shadow-light:0 10px 30px rgba(12,18,34,.08);
  --glow:0 0 24px rgba(110,91,255,.40);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--st-bg-0);
  color:var(--st-text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
.num,.tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--st-brand-2);outline-offset:3px;border-radius:6px;
}
::selection{background:rgba(110,91,255,.35);}

/* 容器 */
.grid-container{max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;background:#FFFFFF;
  border-bottom:1px solid #E6E9F2;
  box-shadow:0 8px 24px rgba(12,18,34,.06);
}
.header-inner{
  display:flex;align-items:center;gap:28px;height:var(--nav-h);
  max-width:var(--container);margin:0 auto;padding:0 24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:26px;height:26px;flex:0 0 26px;}
.brand-text{font-size:17px;font-weight:700;color:#0C1222;letter-spacing:-.01em;white-space:nowrap;}
.brand-text i{font-style:normal;color:var(--st-brand);}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:#33405C;transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--st-brand),var(--st-cyan));
  transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--st-brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand);font-weight:600;}
.nav-link.is-active::after{display:none;}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box{
  position:relative;display:flex;align-items:center;
  height:40px;width:230px;border-radius:var(--r-pill);background:#F4F6FC;
  border:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box i{position:absolute;left:14px;font-size:13px;color:#8C97B2;}
.search-box input{
  width:100%;height:100%;border:0;background:transparent;padding:0 14px 0 36px;
  font-size:14px;color:#33405C;border-radius:var(--r-pill);
}
.search-box input::placeholder{color:#96A0BA;font-size:13.5px;}
.search-box:focus-within{border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.18);background:#fff;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-weight:600;border-radius:var(--r-pill);
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
  text-align:center;line-height:1;
}
.btn-primary{
  background:linear-gradient(120deg,var(--st-brand),var(--st-brand-2));
  color:#fff;box-shadow:var(--glow);padding:0 22px;height:40px;font-size:14px;
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 32px rgba(110,91,255,.55);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--st-brand);border:1px solid var(--st-brand);
  padding:0 22px;height:44px;font-size:15px;
}
.btn-ghost:hover{background:rgba(110,91,255,.08);}
.btn-ghost-light{
  background:transparent;color:var(--st-text);border:1px solid rgba(255,255,255,.24);
  padding:0 22px;height:44px;font-size:15px;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.08);border-color:var(--st-brand-2);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-block{width:100%;}
.hamburger{
  display:none;width:40px;height:40px;border-radius:12px;background:#F4F6FC;border:1px solid #E6E9F2;
  align-items:center;justify-content:center;cursor:pointer;color:#33405C;import;
}
.mobile-drawer{
  position:fixed;inset:0;background:#FFFFFF;z-index:200;transform:translateX(100%);
  transition:transform .28s var(--ease);display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid #EEF1F7;}
.drawer-close{background:#F4F6FC;border:1px solid #E6E9F2;width:38px;height:38px;border-radius:12px;cursor:pointer;color:#33405C;}
.drawer-nav{flex:1;overflow:auto;padding:8px 0;}
.drawer-nav a{
  display:block;padding:0 20px;line-height:56px;font-size:17px;font-weight:500;color:#1B2438;
  border-bottom:1px solid #F1F3F8;
}
.drawer-nav a.is-active{color:var(--st-brand);background:#F7F6FF;font-weight:600;}
.drawer-foot{padding:16px 20px;border-top:1px solid #EEF1F7;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;min-height:372px;display:flex;align-items:center;
  background-color:var(--st-bg-1);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,10,20,.94) 0%,rgba(7,10,20,.80) 52%,rgba(13,19,34,.62) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.45;pointer-events:none;
  background-image:radial-gradient(1.5px 1.5px at 18% 28%,rgba(255,255,255,.85),transparent 60%),
                   radial-gradient(1.5px 1.5px at 72% 16%,rgba(154,139,255,.9),transparent 60%),
                   radial-gradient(1.2px 1.2px at 46% 74%,rgba(34,227,195,.8),transparent 60%),
                   radial-gradient(1.2px 1.2px at 88% 62%,rgba(255,255,255,.7),transparent 60%),
                   radial-gradient(1.2px 1.2px at 32% 52%,rgba(255,138,61,.7),transparent 60%);
}
.page-hero .grid-container{position:relative;z-index:2;width:100%;padding-top:34px;padding-bottom:44px;}

/* 面包屑 */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--st-text-2);margin-bottom:24px;}
.crumbs a{color:var(--st-text-2);transition:color .18s var(--ease);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{color:var(--st-text-3);}
.crumbs .current{color:var(--st-brand-2);font-weight:600;}

.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 13px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.01em;
}
.pill-brand{background:rgba(110,91,255,.16);color:#C3BAFF;border:1px solid rgba(110,91,255,.42);}
.pill-safe{background:rgba(34,227,195,.12);color:var(--st-cyan);border:1px solid rgba(34,227,195,.36);}
.pill-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}
.page-hero h1{
  font-size:clamp(28px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.01em;
  max-width:760px;margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;background:linear-gradient(100deg,var(--st-brand-2),var(--st-cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--st-text-2);max-width:640px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ 区块基础 ============ */
.section{padding:88px 0;}
.section-dark{background:var(--st-bg-0);}
.section-panel{background:var(--st-bg-1);}
.section-light{background:var(--st-light-bg);color:var(--st-light-text);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--st-brand-2);text-transform:uppercase;margin-bottom:14px;
}
.section-light .eyebrow{color:var(--st-brand);}
h2.section-title{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em;margin-bottom:14px;}
.section-desc{font-size:15.5px;color:var(--st-text-2);}
.section-light .section-desc{color:var(--st-light-text-2);}

/* ============ 双列：主卡 + 粘性要点 ============ */
.split-grid{align-items:flex-start;}
.main-card{
  background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--r-card);
  padding:36px 34px;box-shadow:0 20px 60px rgba(0,0,0,.35);
}
.group-block{display:flex;gap:18px;padding:24px 0;border-bottom:1px dashed rgba(255,255,255,.09);}
.group-block:last-child{border-bottom:0;padding-bottom:0;}
.group-block:first-child{padding-top:0;}
.group-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.32);color:var(--st-brand-2);font-size:17px;
}
.group-block:nth-child(2) .group-icon{background:rgba(34,227,195,.12);border-color:rgba(34,227,195,.30);color:var(--st-cyan);}
.group-block:nth-child(3) .group-icon{background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.30);color:var(--st-amber);}
.group-body h3{font-size:17px;font-weight:600;margin-bottom:8px;color:#fff;}
.group-body p{font-size:15px;color:var(--st-text-2);}
.group-body p + p{margin-top:10px;}
.inline-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:rgba(110,91,255,.12);color:#B9AFFF;border:1px solid rgba(110,91,255,.28);
}
.tag.tag-cyan{background:rgba(34,227,195,.10);color:var(--st-cyan);border-color:rgba(34,227,195,.26);}

.sticky-card{
  position:sticky;top:calc(var(--nav-h) + 20px);
  background:linear-gradient(160deg,rgba(20,27,46,.96),rgba(13,19,34,.96));
  border:1px solid rgba(110,91,255,.30);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow-dark);
}
.sticky-card h3{font-size:17px;font-weight:700;margin-bottom:6px;color:#fff;}
.sticky-card > p{font-size:13.5px;color:var(--st-text-3);margin-bottom:18px;}
.quick-list li{
  display:flex;align-items:flex-start;gap:10px;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.07);
  font-size:14px;color:var(--st-text-2);
}
.quick-list li:last-of-type{border-bottom:0;}
.quick-list i{color:var(--st-cyan);font-size:12px;margin-top:7px;}
.sticky-note{
  margin-top:18px;padding:14px;border-radius:var(--r-sm);
  background:rgba(255,138,61,.08);border:1px solid rgba(255,138,61,.28);
  font-size:13px;color:#FFC79C;line-height:1.7;
}

/* ============ 安全清单（浅色区） ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.check-item{
  display:flex;gap:14px;background:var(--st-light-card);border:1px solid #E7EAF3;border-radius:var(--r-sm);
  padding:20px 20px;box-shadow:var(--shadow-light);transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.check-item:hover{transform:translateY(-4px);border-color:#D3D2FF;}
.check-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:rgba(110,91,255,.12);color:var(--st-brand);font-size:12px;margin-top:2px;
}
.check-item h3{font-size:16px;font-weight:600;color:var(--st-light-text);margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--st-light-text-2);line-height:1.75;}
.check-item.is-key .check-mark{background:rgba(34,227,195,.16);color:#0BA48F;}

/* ============ FAQ ============ */
.accordion{border:0;background:transparent;}
.accordion .accordion-item{
  background:var(--st-light-card);border:1px solid #E7EAF3;border-radius:var(--r-sm);
  margin-bottom:12px;box-shadow:var(--shadow-light);overflow:hidden;
}
.accordion .accordion-title{
  border:0;padding:18px 52px 18px 22px;font-size:16px;font-weight:600;color:var(--st-light-text);
  background:transparent;position:relative;line-height:1.6;
}
.accordion .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--st-brand);
  transition:transform .22s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);}
.accordion .accordion-item.is-active .accordion-title{color:var(--st-brand);}
.accordion .accordion-item.is-active{border-left:3px solid var(--st-brand);}
.accordion .accordion-content{
  border:0;padding:0 22px 20px;background:transparent;color:var(--st-light-text-2);
  font-size:15px;line-height:1.85;
}
.accordion .accordion-content a{color:var(--st-brand);font-weight:600;}

/* ============ CTA 条 ============ */
.cta-strip{
  background:linear-gradient(120deg,rgba(110,91,255,.20),rgba(34,227,195,.10)),var(--st-bg-1);
  border:1px solid rgba(110,91,255,.30);border-radius:var(--r-card);
  padding:40px 38px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:0 20px 60px rgba(0,0,0,.4);
}
.cta-strip h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:8px;}
.cta-strip p{font-size:14.5px;color:var(--st-text-2);max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{background:#05070F;border-top:1px solid rgba(255,255,255,.06);padding:64px 0 0;color:var(--st-text-2);}
.footer-grid{padding-bottom:40px;}
.footer-col{margin-bottom:28px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:var(--st-text-3);margin-bottom:16px;}
.footer-contact{font-size:13.5px;line-height:1.9;color:var(--st-text-3);}
.footer-contact strong{color:var(--st-text-2);font-weight:600;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  font-size:14px;color:var(--st-text-3);position:relative;padding-left:0;
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-links a:hover{color:#fff;padding-left:8px;}
.footer-links a::before{
  content:"";position:absolute;left:-6px;top:50%;transform:translateY(-50%);
  width:0;height:1px;background:var(--st-brand-2);transition:width .18s var(--ease);
}
.footer-links a:hover::before{width:8px;left:-10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding:20px 0 26px;display:flex;flex-wrap:wrap;
  gap:12px;justify-content:space-between;align-items:center;font-size:12px;color:var(--st-text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom a{color:var(--st-text-3);transition:color .18s var(--ease);}
.footer-bottom a:hover{color:#fff;}

/* ============ 表单（精简） ============ */
.form-card{
  background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--r-card);
  padding:32px 30px;box-shadow:0 20px 60px rgba(0,0,0,.4);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--st-text-2);margin-bottom:8px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-input);color:var(--st-text);font-size:15px;padding:0 14px;height:48px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--st-text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.22);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--st-text-2) 50%),linear-gradient(135deg,var(--st-text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.form-hint{font-size:12px;color:var(--st-text-3);margin-top:12px;line-height:1.7;}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-main{gap:2px;}
  .nav-link{padding:8px 9px;font-size:14px;}
  .search-box{width:170px;}
  .section{padding:64px 0;}
  .main-card{padding:30px 26px;}
  .sticky-card{position:static;margin-top:28px;}
}
@media screen and (max-width:900px){
  .search-box{display:none;}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .header-inner{padding:0 16px;gap:12px;height:56px;}
  .nav-main,.header-tools .btn-primary{display:none;}
  .hamburger{display:flex;}
  .page-hero{min-height:320px;}
  .page-hero .grid-container{padding-top:24px;padding-bottom:32px;}
  .section{padding:48px 0;}
  .hero-sub{font-size:15.5px;}
  .check-grid{grid-template-columns:1fr;}
  .main-card{padding:24px 20px;}
  .cta-strip{padding:28px 22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  .brand-text{font-size:15.5px;}
  .group-block{flex-direction:column;gap:12px;}
  .hero-actions .btn{width:100%;}
  .page-hero h1{font-size:28px;}
  .form-card{padding:24px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --st-light-line:#E6E9F2;
  --radius-card:20px;
  --radius-sm:14px;
  --radius-input:12px;
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --shadow-light:0 10px 30px rgba(12,18,34,.08);
  --glow:0 0 24px rgba(110,91,255,.40);
  --ease:cubic-bezier(.2,.7,.3,1);
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--st-bg-0);
  color:var(--st-text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15.5px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background-color:transparent}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--st-cyan);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.section{padding:var(--pad-section) 0}
.section--dark{background:var(--st-bg-0)}
.section--panel{background:var(--st-bg-1)}
.section--light{background:var(--st-light-bg);color:var(--st-light-text)}
.section-head{margin-bottom:40px;max-width:760px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--st-brand-2);text-transform:uppercase}
.section-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--st-brand),var(--st-cyan))}
.section-title{font-size:28px;font-weight:700;margin-top:12px}
.section-sub{margin-top:14px;color:var(--st-text-2);font-size:15.5px}
.section--light .section-title{color:var(--st-light-text)}
.section--light .section-sub{color:var(--st-light-text-2)}
.section--light .section-eyebrow{color:var(--st-brand)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  border-bottom:1px solid var(--st-light-line);
  box-shadow:0 8px 24px rgba(12,18,34,.06);
}
.nav-shell{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;flex:0 0 auto}
.brand-name{font-size:17px;font-weight:700;color:var(--st-light-text);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;
  border-radius:999px;font-size:15px;font-weight:500;color:#33405C;white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--st-brand),var(--st-cyan));
  transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--st-brand);background:#F7F7FF}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand)}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{position:absolute;left:14px;font-size:13px;color:var(--st-text-3)}
.nav-search input{
  width:236px;height:40px;border-radius:999px;border:1px solid transparent;
  background:#F4F6FC;padding:0 16px 0 36px;font-size:13.5px;color:var(--st-light-text);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-search input::placeholder{color:#8B96B0}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.18)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;line-height:1;text-align:center;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:linear-gradient(120deg,var(--st-brand),var(--st-brand-2));color:#fff;box-shadow:0 10px 24px rgba(110,91,255,.32)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 12px 30px rgba(110,91,255,.46),var(--glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid rgba(110,91,255,.55);color:var(--st-brand-2)}
.btn-ghost:hover{background:rgba(110,91,255,.12);border-color:var(--st-brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 30px;font-size:16px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--st-brand-2);font-weight:600;font-size:14px;transition:color .2s var(--ease)}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--st-cyan);text-decoration:underline;text-underline-offset:4px}
.link-arrow:hover i{transform:translateX(4px)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;color:var(--st-light-text);font-size:18px;align-items:center;justify-content:center}
.nav-toggle:hover{background:#F4F6FC}
.nav-drawer{
  display:none;position:fixed;left:0;right:0;top:0;bottom:0;z-index:120;
  background:#FFFFFF;padding:72px 20px 100px;overflow-y:auto;
}
.nav-drawer.is-open{display:block}
.nav-drawer a.dw-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;font-weight:500;color:#1D2942;border-bottom:1px solid var(--st-light-line);
}
.nav-drawer a.dw-link.is-active{color:var(--st-brand)}
.nav-drawer .dw-foot{position:fixed;left:0;right:0;bottom:0;padding:16px 20px;background:#fff;border-top:1px solid var(--st-light-line)}
.dw-close{position:absolute;top:16px;right:20px;width:42px;height:42px;border-radius:12px;font-size:20px;color:#1D2942;background:#F4F6FC}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:14px;color:var(--st-text-3);padding-top:20px}
.crumbs a{color:var(--st-text-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--st-brand-2)}
.crumbs .sep{margin:0 8px;color:var(--st-text-3)}
.crumbs .cur{color:var(--st-brand-2)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  min-height:360px;display:flex;flex-direction:column;justify-content:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,10,20,.95) 0%,rgba(7,10,20,.82) 46%,rgba(13,19,34,.62) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(1.6px 1.6px at 12% 24%,rgba(255,255,255,.55),transparent 60%),
                   radial-gradient(1.4px 1.4px at 38% 72%,rgba(154,139,255,.6),transparent 60%),
                   radial-gradient(1.6px 1.6px at 68% 32%,rgba(34,227,195,.5),transparent 60%),
                   radial-gradient(1.2px 1.2px at 86% 66%,rgba(255,255,255,.45),transparent 60%);
}
.page-hero .grid-container{position:relative;z-index:2;width:100%}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-brand{background:rgba(110,91,255,.12);color:var(--st-brand-2);border:1px solid rgba(110,91,255,.32)}
.badge-cyan{background:rgba(34,227,195,.10);color:var(--st-cyan);border:1px solid rgba(34,227,195,.28)}
.badge-amber{background:rgba(255,138,61,.12);color:var(--st-amber);border:1px solid rgba(255,138,61,.30)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}
.hero-title{font-size:44px;font-weight:800;line-height:1.2;max-width:900px}
.hero-title .accent{background:linear-gradient(100deg,var(--st-brand-2),var(--st-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:18px;max-width:660px;color:var(--st-text-2);font-size:16.5px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- 指标条 ---------- */
.metrics{background:var(--st-bg-1);border-top:1px solid var(--st-line);border-bottom:1px solid var(--st-line)}
.metrics .grid-x{padding:28px 0}
.metric{display:flex;flex-direction:column;gap:4px;padding:6px 0}
.metric .mv{font-size:26px;font-weight:800;color:var(--st-text)}
.metric .ml{font-size:13.5px;color:var(--st-text-2)}
.metric + .metric{border-left:1px solid var(--st-line);padding-left:24px}
.metric-note{font-size:13px;color:var(--st-text-3)}

/* ---------- 功能网格 ---------- */
.fn-card{
  position:relative;display:flex;flex-direction:column;gap:14px;height:100%;
  background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--radius-card);
  padding:26px;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.fn-card:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.45);box-shadow:var(--shadow-dark),0 0 0 1px rgba(110,91,255,.30)}
.fn-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--st-brand-2);background:rgba(110,91,255,.12);border:1px solid rgba(110,91,255,.28);
}
.fn-title{font-size:18px;font-weight:600}
.fn-text{color:var(--st-text-2);font-size:15px}
.fn-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(110,91,255,.12);color:var(--st-brand-2);
  border:1px solid rgba(110,91,255,.22);
}
.fn-card--feature{
  padding:0;overflow:hidden;border-color:rgba(110,91,255,.34);
  box-shadow:var(--shadow-dark),0 0 0 1px rgba(110,91,255,.30);
}
.fn-card--feature .fn-media{position:relative;height:230px;overflow:hidden}
.fn-card--feature .fn-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.fn-card--feature:hover .fn-media img{transform:scale(1.04)}
.fn-card--feature .fn-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,20,.15),rgba(13,19,34,.92))}
.fn-card--feature .fn-body{padding:0 28px 28px;margin-top:-38px;position:relative;z-index:2;display:flex;flex-direction:column;gap:14px}
.fn-card--feature .fn-title{font-size:21px}
.fn-feature-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:4px}
.fn-feature-list li{
  font-size:13.5px;color:var(--st-text-2);padding:10px 12px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--st-line);
}
.fn-feature-list li i{color:var(--st-cyan);margin-right:6px;font-size:12px}

/* ---------- 对比表（浅色区） ---------- */
.cmp-wrap{
  background:var(--st-light-card);border:1px solid var(--st-light-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-light);overflow:hidden;
}
.cmp-scroll{overflow-x:auto}
table.cmp{width:100%;border-collapse:collapse;min-width:680px}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--st-light-line)}
table.cmp thead th{background:#EEF1FA;color:var(--st-light-text);font-weight:600;font-size:14px;letter-spacing:.02em}
table.cmp tbody tr:nth-child(even){background:#FAFBFF}
table.cmp tbody tr:hover{background:#F4F2FF}
table.cmp td:first-child{font-weight:600;color:var(--st-light-text);display:flex;align-items:center;gap:10px}
table.cmp td:first-child i{color:var(--st-brand)}
.cmp-yes{color:#0E9F86;font-weight:600}
.cmp-part{color:#B4701F;font-weight:600}
.cmp-no{color:#98A2B8}
.cmp-foot{margin-top:16px;font-size:13.5px;color:var(--st-light-text-2)}
.cmp-panel{background:var(--st-light-card);border:1px solid var(--st-light-line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-light)}
.cmp-panel h3{font-size:17px;color:var(--st-light-text);margin-bottom:12px}
.cmp-panel ul li{display:flex;gap:10px;font-size:14.5px;color:var(--st-light-text-2);padding:9px 0;border-bottom:1px dashed var(--st-light-line)}
.cmp-panel ul li:last-child{border-bottom:0}
.cmp-panel ul li i{color:var(--st-brand);margin-top:6px}

/* ---------- 资讯入口条 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--radius-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.45);box-shadow:var(--shadow-dark),0 0 0 1px rgba(110,91,255,.30)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,20,0) 35%,rgba(7,10,20,.6))}
.card-badge{
  position:absolute;top:12px;left:12px;z-index:2;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(7,10,20,.66);border:1px solid rgba(255,255,255,.22);color:#EDEFFF;backdrop-filter:blur(6px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14.5px;color:var(--st-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--st-line);font-size:13px;color:var(--st-text-3);
}
.card-foot i{color:var(--st-brand-2);transition:transform .2s var(--ease)}
.card:hover .card-foot i{transform:translateX(4px)}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;padding:44px;
  background:linear-gradient(120deg,rgba(110,91,255,.20),rgba(34,227,195,.10)),var(--st-bg-2);
  border:1px solid rgba(110,91,255,.28);
  box-shadow:var(--shadow-dark);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--st-brand),var(--st-cyan))}
.cta-band h2{font-size:25px;font-weight:700}
.cta-band p{margin-top:12px;color:var(--st-text-2);max-width:620px;font-size:15.5px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 表单（精简） ---------- */
.form-panel{background:var(--st-bg-1);border:1px solid var(--st-line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-dark)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--st-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-input);padding:13px 15px;font-size:14.5px;color:var(--st-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input{height:48px;padding:0 15px}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.22)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--st-text-2) 50%),linear-gradient(135deg,var(--st-text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.form-tip{font-size:12px;color:var(--st-text-3);margin-top:12px}
.form-side h2{font-size:24px}
.form-side p{margin-top:14px;color:var(--st-text-2)}
.side-points{margin-top:22px}
.side-points li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--st-line);font-size:14.5px;color:var(--st-text-2)}
.side-points li:last-child{border-bottom:0}
.side-points li i{color:var(--st-cyan);margin-top:6px}
.contact-line{margin-top:22px;font-size:14px;color:var(--st-text-2)}
.contact-line strong{color:var(--st-text)}

/* ---------- 页脚 ---------- */
.site-footer{background:#05070F;border-top:1px solid rgba(255,255,255,.06);padding-top:64px;color:var(--st-text-2)}
.footer-grid{gap:32px 0;padding-bottom:44px}
.footer-col{padding-top:6px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--st-text);font-size:17px;font-weight:700}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-desc{margin-top:14px;font-size:14px;color:var(--st-text-2);max-width:300px}
.footer-contact{margin-top:18px;font-size:13.5px;color:var(--st-text-3);line-height:2}
.footer-contact strong{color:var(--st-text-2);font-weight:600}
.footer-title{font-size:14px;font-weight:600;color:var(--st-text);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--st-text-2);position:relative;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-links a::before{content:"";position:absolute;left:-10px;top:50%;width:6px;height:1px;background:var(--st-brand);opacity:0;transition:opacity .2s var(--ease)}
.footer-links a:hover{color:#fff;padding-left:6px}
.footer-links a:hover::before{opacity:1}
.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:12px;color:var(--st-text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--st-text-3);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:var(--st-text)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--pad-section:64px}
  .nav-main,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .hero-title{font-size:34px}
  .fn-feature-list{grid-template-columns:1fr}
  .cta-band{padding:32px}
}
@media (max-width:640px){
  :root{--pad-section:48px}
  .grid-container{padding-left:16px;padding-right:16px}
  .nav-shell{height:56px}
  .brand-name{font-size:16px}
  .btn-sm{height:36px;padding:0 14px;font-size:13px}
  .nav-tools .btn-primary{display:none}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15.5px}
  .page-hero{min-height:320px;padding:8px 0 34px}
  .section-title{font-size:23px}
  .metric + .metric{border-left:0;padding-left:0;border-top:1px solid var(--st-line);padding-top:14px;margin-top:14px}
  .cta-band{padding:26px 22px}
  .cta-band h2{font-size:21px}
  .form-panel{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --st-bg-0:#070A14;
  --st-bg-1:#0D1322;
  --st-bg-2:#141B2E;
  --st-line:rgba(255,255,255,.09);
  --st-brand:#6E5BFF;
  --st-brand-2:#9A8BFF;
  --st-cyan:#22E3C3;
  --st-amber:#FF8A3D;
  --st-text:#F3F6FF;
  --st-text-2:#AAB5D2;
  --st-text-3:#6C7796;
  --st-light-bg:#F4F6FC;
  --st-light-card:#FFFFFF;
  --st-light-text:#0C1222;
  --st-light-text-2:#4A5568;
  --r-card:20px;
  --r-sm:14px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:16px;
  --sh-dark:0 20px 60px rgba(0,0,0,.45), 0 0 0 1px rgba(110,91,255,.30);
  --sh-light:0 10px 30px rgba(12,18,34,.08);
  --glow:0 0 24px rgba(110,91,255,.40);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-pad:88px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--st-light-text);
  background:var(--st-light-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--st-brand);outline-offset:2px;border-radius:6px}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  border-bottom:1px solid #E6E9F2;
  box-shadow:0 8px 24px rgba(12,18,34,.06);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:28px;height:28px}
.brand-text{font-size:17px;font-weight:700;color:#0C1222;letter-spacing:-.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:#33405C;
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--st-brand),var(--st-cyan));
  transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--st-brand)}
.nav-link:hover::after{left:12px;right:12px}
.nav-link.is-active{background:#F1F0FF;color:var(--st-brand);font-weight:600}
.nav-link.is-active::after{left:12px;right:12px;background:linear-gradient(90deg,var(--st-brand),var(--st-brand-2))}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--r-pill);
  background:#F4F6FC;border:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box i{color:#8A93AE;font-size:14px}
.search-box input{
  border:0;background:transparent;outline:none;width:200px;
  font-size:14px;color:#0C1222;
}
.search-box input::placeholder{color:#8A93AE}
.search-box:focus-within{
  background:#fff;border-color:var(--st-brand);
  box-shadow:0 0 0 3px rgba(110,91,255,.16);
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:#F4F6FC;border:1px solid #E6E9F2;color:#33405C;
  cursor:pointer;transition:background .2s var(--ease);
}
.nav-toggle:hover{background:#EDEFFF}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-weight:600;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-lg{height:50px;padding:0 30px;font-size:16px}
.btn-primary{
  background:linear-gradient(120deg,var(--st-brand),var(--st-brand-2));
  color:#fff;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 30px rgba(110,91,255,.55);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 18px rgba(110,91,255,.35)}
.btn-ghost{
  background:transparent;border-color:var(--st-brand);color:var(--st-brand);
}
.btn-ghost:hover{background:rgba(110,91,255,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn i{font-size:13px}

/* 移动抽屉 */
.mobile-drawer{
  display:none;position:fixed;inset:56px 0 0 0;z-index:99;
  background:#FFFFFF;padding:8px 0 96px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-link{
  display:block;padding:0 24px;line-height:56px;font-size:17px;font-weight:500;
  color:#1C2740;border-bottom:1px solid #F0F2F8;
}
.mobile-drawer .drawer-link.is-active{color:var(--st-brand);background:#F7F6FF;font-weight:700}
.mobile-drawer .drawer-cta{
  position:fixed;left:0;right:0;bottom:0;padding:14px 20px;
  background:#fff;border-top:1px solid #E6E9F2;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:var(--st-bg-0);border-bottom:1px solid var(--st-line)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  padding:16px 0;font-size:14px;color:var(--st-text-3);
}
.breadcrumb a{color:var(--st-text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--st-text)}
.breadcrumb .sep{color:var(--st-text-3)}
.breadcrumb .current{color:var(--st-brand-2);font-weight:600}

/* ---------- Hero ---------- */
.hero-help{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 82% 18%, rgba(110,91,255,.28), transparent 55%),
    radial-gradient(circle at 12% 82%, rgba(34,227,195,.14), transparent 52%),
    linear-gradient(180deg,#070A14 0%,#0B1120 100%);
  padding:64px 0 72px;
}
.hero-help::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:34px 34px;opacity:.32;pointer-events:none;
}
.hero-help .grid-container{position:relative;z-index:1}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-brand{background:rgba(110,91,255,.14);color:var(--st-brand-2);border:1px solid rgba(110,91,255,.32)}
.badge-cyan{background:rgba(34,227,195,.12);color:var(--st-cyan);border:1px solid rgba(34,227,195,.28)}
.badge-amber{background:rgba(255,138,61,.12);color:var(--st-amber);border:1px solid rgba(255,138,61,.3)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--st-cyan);box-shadow:0 0 8px var(--st-cyan)}
.hero-title{
  font-size:42px;font-weight:800;line-height:1.2;color:var(--st-text);
  max-width:820px;margin-bottom:18px;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--st-brand-2),var(--st-cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:17px;line-height:1.85;color:var(--st-text-2);max-width:680px;
}
.hero-search{
  margin-top:30px;max-width:640px;
  display:flex;align-items:center;gap:10px;
  padding:8px 8px 8px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.hero-search:focus-within{border-color:var(--st-brand);box-shadow:0 0 0 3px rgba(110,91,255,.22)}
.hero-search i{color:var(--st-text-3);font-size:15px}
.hero-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  height:44px;font-size:15px;color:var(--st-text);
}
.hero-search input::placeholder{color:var(--st-text-3)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-tags a{
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;
  color:var(--st-text-2);background:rgba(255,255,255,.05);
  border:1px solid var(--st-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.hero-tags a:hover{color:var(--st-text);border-color:rgba(110,91,255,.5);background:rgba(110,91,255,.12)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-pad) 0}
.section-dark{background:var(--st-bg-0);color:var(--st-text)}
.section-dark.band-2{
  background:
    radial-gradient(circle at 88% 8%, rgba(110,91,255,.16), transparent 50%),
    var(--st-bg-0);
}
.section-light{background:var(--st-light-bg);color:var(--st-light-text)}
.section-head{max-width:720px;margin-bottom:40px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--st-brand);margin-bottom:12px;
}
.section-dark .section-kicker{color:var(--st-brand-2)}
.section-title{font-size:28px;font-weight:700;margin-bottom:12px}
.section-dark .section-title{color:var(--st-text)}
.section-lead{font-size:15px;line-height:1.85;color:var(--st-light-text-2)}
.section-dark .section-lead{color:var(--st-text-2)}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:44px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.faq-group-index{
  flex:0 0 auto;width:42px;height:42px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:16px;font-weight:700;
  background:linear-gradient(140deg,var(--st-brand),var(--st-brand-2));
  color:#fff;box-shadow:0 8px 22px rgba(110,91,255,.32);
}
.faq-group-title{font-size:21px;font-weight:700;color:var(--st-light-text)}
.faq-group-note{font-size:14px;color:var(--st-light-text-2);margin-top:2px}

.accordion{background:transparent;margin:0}
.accordion-item{
  background:var(--st-bg-1);
  border:1px solid var(--st-line);
  border-radius:var(--r-sm);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.accordion-item:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(7,10,20,.28)}
.accordion-item.is-active{box-shadow:inset 3px 0 0 var(--st-brand),0 16px 40px rgba(7,10,20,.3)}
.accordion-title{
  background:transparent;border:0;border-bottom:0;
  position:relative;
  padding:18px 56px 18px 22px;
  font-size:16px;font-weight:600;color:var(--st-text);
  transition:color .22s var(--ease);
}
.accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--st-brand-2);
  transition:transform .22s var(--ease);
}
.accordion-item.is-active .accordion-title{color:#FFFFFF}
.accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg)}
.accordion-content{
  background:transparent;border:0;border-top:1px solid var(--st-line);
  padding:16px 22px 20px;
  font-size:15px;line-height:1.85;color:var(--st-text-2);
}
.accordion-content p+p{margin-top:10px;margin-block-start:10px}
.accordion-content strong{color:var(--st-text);font-weight:600}

/* ---------- 快捷入口 ---------- */
.quick-card{
  display:flex;flex-direction:column;height:100%;
  padding:24px;border-radius:var(--r-card);
  background:var(--st-bg-1);border:1px solid var(--st-line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(110,91,255,.5);box-shadow:0 20px 50px rgba(0,0,0,.42)}
.quick-icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.3);
  color:var(--st-brand-2);font-size:17px;margin-bottom:16px;
}
.quick-card h3{font-size:17px;font-weight:600;color:var(--st-text);margin-bottom:8px}
.quick-card p{font-size:14px;line-height:1.8;color:var(--st-text-2);flex:1}
.quick-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--st-brand-2);
}
.quick-more i{transition:transform .2s var(--ease)}
.quick-card:hover .quick-more i{transform:translateX(4px)}

/* ---------- 咨询表单 ---------- */
.consult-figure{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid #E6E9F2;box-shadow:var(--sh-light);
  margin-bottom:22px;background:#fff;
}
.consult-figure img{width:100%;height:200px;object-fit:cover;border-radius:0}
.consult-points{display:grid;gap:14px;margin-top:22px}
.consult-points li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;line-height:1.8;color:var(--st-light-text-2);
}
.consult-points i{color:var(--st-brand);margin-top:5px;font-size:14px}
.consult-card{
  background:var(--st-light-card);border:1px solid #E6E9F2;
  border-radius:var(--r-card);box-shadow:var(--sh-light);
  padding:32px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--st-light-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--r-input);
  background:#F4F6FC;border:1px solid #E1E5F0;
  color:var(--st-light-text);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.8}
.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' viewBox='0 0 24 24' fill='none' stroke='%236C7796' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;
  padding-right:40px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  background:#fff;border-color:var(--st-brand);
  box-shadow:0 0 0 3px rgba(110,91,255,.16);
}
.field input::placeholder,.field textarea::placeholder{color:#98A1B8}
.form-note{font-size:12px;line-height:1.7;color:var(--st-light-text-2);margin-top:12px;opacity:.85}
.form-card-title{font-size:20px;font-weight:700;margin-bottom:6px}
.form-card-sub{font-size:14px;color:var(--st-light-text-2);margin-bottom:26px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#05070F;color:var(--st-text-2);
  border-top:1px solid rgba(255,255,255,.06);
  padding:64px 0 0;
}
.footer-grid{row-gap:36px}
.footer-col{padding-bottom:8px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-brand span{font-size:16px;font-weight:700;color:var(--st-text)}
.footer-desc{font-size:14px;line-height:1.85;color:var(--st-text-3);max-width:300px}
.footer-contact{margin-top:16px;font-size:13px;line-height:1.9;color:var(--st-text-3)}
.footer-contact strong{color:var(--st-text-2);font-weight:600}
.footer-title{font-size:14px;font-weight:600;color:var(--st-text);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{
  position:relative;display:inline-block;padding-left:0;
  font-size:14px;color:var(--st-text-3);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-links a:hover{color:#fff;padding-left:12px}
.footer-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:0;height:1px;background:var(--st-brand);
  transition:width .2s var(--ease);
}
.footer-links a:hover::before{width:8px}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:12px;color:var(--st-text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom a{color:var(--st-text-3);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:var(--st-text)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--sec-pad:64px}
  .nav-main{display:none}
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .hero-title{font-size:34px}
  .form-row{grid-template-columns:1fr}
  .consult-card{padding:24px}
}
@media screen and (max-width:640px){
  :root{--sec-pad:48px}
  .grid-container{padding-left:16px;padding-right:16px}
  .header-inner{height:56px;gap:12px}
  .brand-text{font-size:15px}
  .brand-mark{width:24px;height:24px}
  .mobile-drawer{inset:56px 0 0 0}
  .hero-help{padding:44px 0 52px}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-search{flex-wrap:nowrap;padding:6px 6px 6px 14px}
  .hero-search input{height:40px;font-size:14px}
  .hero-search .btn{flex:0 0 auto;padding:0 16px}
  .section-title{font-size:22px}
  .faq-group-title{font-size:18px}
  .accordion-title{font-size:15px;padding:16px 48px 16px 16px}
  .accordion-title::before{right:16px}
  .accordion-content{padding:14px 16px 18px}
  .consult-card{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (min-width:1440px){
  .hero-help::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(90deg,rgba(7,10,20,.9) 0%,transparent 12%,transparent 88%,rgba(7,10,20,.9) 100%);
  }
}