:root{
    --bg:#050505;
    --section:#0B0B0D;
    --card:#111111;
    --header:#0F0F10;
    --footer:#090909;
    --red:#D50505;
    --red-hover:#B90404;
    --red-light:#FF2A2A;
    --white:#FFFFFF;
    --text:#D6D6D6;
    --muted:#A8A8A8;
    --line:rgba(255,255,255,0.08);
    --red-line:rgba(213,5,5,0.32);
    --mask:rgba(0,0,0,0.65);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:50;background:linear-gradient(180deg,#151515 0%,#080808 100%);border-bottom:1px solid var(--red-line);box-shadow:0 12px 32px rgba(0,0,0,.4)}
.header-inner{height:64px;display:grid;grid-template-columns:52px 1fr 72px;align-items:center;gap:12px;width:min(1180px,100%);margin:0 auto;padding:0 16px}
.brand-logo{justify-self:center;display:flex;align-items:center;justify-content:center}
.brand-logo img{height:34px;width:auto;object-fit:contain;filter:drop-shadow(0 0 14px rgba(213,5,5,.18))}
.menu-toggle{width:42px;height:42px;border:1px solid var(--line);background:#111;border-radius:12px;display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;cursor:pointer}
.menu-toggle span{width:20px;height:2px;background:var(--white);border-radius:2px}
.top-action{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-width:62px;height:38px;padding:0 14px;border-radius:999px;background:var(--red);color:var(--white);font-weight:700;box-shadow:0 8px 20px rgba(213,5,5,.24);transition:.25s}
.top-action:hover{background:var(--red-hover);transform:translateY(-1px)}
.desktop-nav{display:none}
.drawer-overlay{position:fixed;inset:0;background:var(--mask);opacity:0;visibility:hidden;z-index:70;transition:.28s}
.drawer-overlay.show{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;z-index:80;top:0;left:0;height:100vh;width:84vw;max-width:320px;background:#0F0F10;border-right:1px solid var(--red-line);box-shadow:24px 0 60px rgba(0,0,0,.6);transform:translateX(-102%);transition:transform .3s ease;display:flex;flex-direction:column;padding:18px}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-logo img{height:34px}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--red-line);background:#151515;color:var(--white);font-size:24px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;padding:18px 0;gap:8px}
.drawer-nav a{padding:12px 14px;border-radius:14px;color:var(--white);background:rgba(255,255,255,.03);border:1px solid transparent;font-weight:650}
.drawer-nav a.active,.drawer-nav a:hover{color:var(--red-light);border-color:var(--red-line);background:rgba(213,5,5,.1)}
.drawer-note{margin-top:auto;padding:14px;border:1px solid var(--line);border-radius:16px;background:#111;color:var(--muted);font-size:13px}
main{min-height:60vh}
.container{width:min(1180px,100%);margin:0 auto;padding:0 16px}
.section{padding:56px 0;background:var(--bg)}
.section.alt{background:var(--section)}
.section-head{margin-bottom:26px;max-width:820px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:10px;padding:5px 10px;border:1px solid var(--red-line);border-radius:999px;background:rgba(213,5,5,.12);color:#FF4A4A;font-size:13px;font-weight:700}
h1,h2,h3{margin:0;color:var(--white);line-height:1.18}
h1{font-size:clamp(34px,7vw,64px);letter-spacing:-.04em}
h2{font-size:clamp(28px,5vw,42px);letter-spacing:-.03em}
h3{font-size:20px}
p{margin:0;color:var(--text)}
.red-text{color:var(--red-light)}
.lead{font-size:17px;color:var(--text);margin-top:16px}
.muted{color:var(--muted)}
.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 24px;border-radius:999px;background:var(--red);color:var(--white);font-weight:800;border:0;box-shadow:0 12px 26px rgba(213,5,5,.28);transition:.25s}
.main-btn:hover{background:var(--red-hover);transform:translateY(-2px)}
.link-btn{display:inline-flex;align-items:center;justify-content:center;margin-top:16px;color:var(--white);font-weight:750;border:1px solid var(--red-line);border-radius:999px;padding:9px 15px;background:rgba(213,5,5,.08);transition:.25s}
.link-btn:hover{border-color:var(--red-light);color:var(--red-light);transform:translateY(-1px)}
.hero{position:relative;overflow:hidden;padding:58px 0 46px;background:linear-gradient(135deg,#050505 0%,#111111 55%,#1A0000 100%);border-bottom:1px solid var(--line)}
.hero:before{content:"";position:absolute;right:-20%;top:-20%;width:420px;height:420px;background:radial-gradient(circle,rgba(213,5,5,.22),transparent 65%);pointer-events:none}
.hero-grid{display:grid;gap:28px;align-items:center;position:relative;z-index:1}
.hero-copy{display:flex;flex-direction:column;gap:18px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span,.tag{display:inline-flex;border:1px solid var(--red-line);background:rgba(213,5,5,.12);color:var(--white);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}
.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:4px}
.hero-visual{position:relative;border:1px solid var(--line);background:linear-gradient(180deg,#151515,#0b0b0d);border-radius:28px;padding:14px;box-shadow:0 20px 70px rgba(0,0,0,.52),0 0 44px rgba(213,5,5,.12)}
.hero-visual img{border-radius:22px;min-height:240px;object-fit:cover;border:1px solid rgba(255,255,255,.06)}
.float-card{position:absolute;left:22px;bottom:22px;background:rgba(11,11,13,.88);backdrop-filter:blur(8px);border:1px solid var(--red-line);border-radius:18px;padding:12px 14px;max-width:260px;box-shadow:0 12px 30px rgba(0,0,0,.4)}
.float-card strong{display:block;color:var(--red-light);margin-bottom:4px}
.grid{display:grid;gap:16px}
.category-grid{grid-template-columns:1fr}
.feature-card,.match-card,.data-card,.security-card,.info-card,.faq-item,.step-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;transition:.25s;position:relative;overflow:hidden}
.feature-card:hover,.match-card:hover,.data-card:hover,.security-card:hover,.info-card:hover,.step-card:hover{border-color:var(--red-line);box-shadow:0 14px 34px rgba(213,5,5,.08);transform:translateY(-2px)}
.feature-card h3,.match-card h3,.data-card h3,.security-card h3,.info-card h3,.step-card h3{margin-bottom:10px}
.feature-card p,.match-card p,.data-card p,.security-card p,.info-card p,.step-card p{color:var(--text)}
.status{display:inline-flex;align-items:center;margin-bottom:12px;padding:5px 10px;border-radius:999px;background:rgba(213,5,5,.12);border:1px solid var(--red-line);color:#FF4A4A;font-size:13px;font-weight:750}
.match-grid,.security-grid,.data-grid,.info-grid{grid-template-columns:1fr}
.split{display:grid;gap:28px;align-items:center}
.image-card{border-radius:28px;padding:12px;background:#111;border:1px solid var(--line);box-shadow:0 18px 58px rgba(0,0,0,.46)}
.image-card img{border-radius:22px;object-fit:cover;width:100%;min-height:240px}
.bullet-list{display:grid;gap:12px;margin-top:20px}
.bullet-list div{padding:14px 16px;border:1px solid var(--line);background:#111;border-radius:16px;color:var(--text)}
.bullet-list strong{display:block;color:var(--red-light);margin-bottom:4px}
.score-board{display:grid;gap:14px;margin-top:20px}
.score-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;padding:14px;border:1px solid var(--line);border-radius:16px;background:#0d0d0d}
.score-row span{color:var(--white);font-weight:700}
.score-row strong{color:var(--red-light);font-size:18px;white-space:nowrap}
.notice-box{padding:22px;border:1px solid var(--red-line);border-radius:24px;background:linear-gradient(135deg,rgba(213,5,5,.12),rgba(17,17,17,.94));box-shadow:0 16px 40px rgba(0,0,0,.32)}
.notice-box h2,.notice-box h3{color:var(--white);margin-bottom:12px}
.faq-list{display:grid;gap:14px}
.faq-item h3{color:var(--red-light);margin-bottom:8px}
.cta{padding:46px 0;background:linear-gradient(135deg,#0B0B0D 0%,#160000 100%);border-top:1px solid var(--red-line);border-bottom:1px solid var(--line)}
.cta-box{display:grid;gap:18px;align-items:center;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:28px;padding:24px}
.page-hero{padding:48px 0;background:linear-gradient(135deg,#050505,#111 60%,#170000);border-bottom:1px solid var(--line)}
.page-hero .container{display:grid;gap:20px;align-items:center}
.page-hero p{max-width:860px;font-size:17px}
.page-visual{border-radius:24px;border:1px solid var(--line);background:#111;padding:10px;box-shadow:0 18px 60px rgba(0,0,0,.45)}
.page-visual img{border-radius:18px;min-height:220px;object-fit:cover;width:100%}
.content-block{background:var(--section);border:1px solid var(--line);border-radius:26px;padding:22px;margin-bottom:18px}
.content-block h2{font-size:26px;margin-bottom:12px;color:var(--white)}
.content-block p+p{margin-top:12px}
.inline-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.inline-links a{border:1px solid var(--line);background:#111;border-radius:999px;padding:9px 14px;color:var(--white);font-weight:700}
.inline-links a:hover{border-color:var(--red-line);color:var(--red-light)}
.steps{counter-reset:step;display:grid;gap:14px;margin-top:20px}
.step-card{padding-left:56px}
.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:21px;width:28px;height:28px;border-radius:50%;background:var(--red);color:var(--white);display:grid;place-items:center;font-weight:800}
.site-footer{background:var(--footer);border-top:1px solid var(--red-line);padding:40px 0 0;color:var(--muted)}
.footer-inner{width:min(1180px,100%);margin:0 auto;padding:0 16px;display:grid;gap:28px}
.footer-brand img{height:38px;margin-bottom:14px}
.footer-brand p{max-width:520px;color:var(--muted)}
.footer-links{display:grid;grid-template-columns:1fr;gap:18px}
.footer-links h3{color:var(--white);font-size:16px;margin-bottom:12px}
.footer-links a{display:block;color:var(--muted);padding:4px 0}
.footer-links a:hover{color:var(--red-light)}
.footer-bottom{margin-top:32px;border-top:1px solid var(--line);padding:16px;width:100%}
.footer-bottom p{width:min(1180px,100%);margin:0 auto;color:var(--muted);font-size:13px}
@media (min-width:640px){
    .category-grid{grid-template-columns:repeat(2,1fr)}
    .match-grid,.security-grid,.data-grid,.info-grid{grid-template-columns:repeat(2,1fr)}
    .footer-links{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:900px){
    .header-inner{height:76px;grid-template-columns:170px 1fr 88px;padding:0 20px}
    .menu-toggle{display:none}
    .brand-logo{justify-self:start}
    .brand-logo img{height:42px}
    .desktop-nav{display:flex;align-items:center;justify-content:center;gap:6px}
    .desktop-nav a{position:relative;padding:10px 12px;border-radius:999px;color:var(--text);font-weight:700;white-space:nowrap}
    .desktop-nav a.active,.desktop-nav a:hover{color:var(--red-light);background:rgba(213,5,5,.1)}
    .desktop-nav a.active:after{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:2px;background:var(--red-light);border-radius:2px}
    .hero{padding:84px 0 70px}
    .hero-grid{grid-template-columns:1.02fr .98fr;gap:44px}
    .category-grid{grid-template-columns:repeat(4,1fr)}
    .category-grid .feature-card:nth-child(1),.category-grid .feature-card:nth-child(2),.category-grid .feature-card:nth-child(3),.category-grid .feature-card:nth-child(4){min-height:260px}
    .match-grid{grid-template-columns:repeat(4,1fr)}
    .security-grid{grid-template-columns:repeat(3,1fr)}
    .data-grid{grid-template-columns:repeat(3,1fr)}
    .info-grid{grid-template-columns:repeat(2,1fr)}
    .split{grid-template-columns:1fr 1fr;gap:44px}
    .cta-box{grid-template-columns:1fr auto;padding:32px}
    .page-hero .container{grid-template-columns:1.1fr .9fr}
    .footer-inner{grid-template-columns:1.1fr 1.4fr}
}
@media (min-width:1100px){
    .desktop-nav a{padding:10px 16px}
}