:root{
  --bg:#0b0d10;--bg2:#101419;--card:#13181e;--card2:#171d24;--line:rgba(255,255,255,.08);
  --text:#e8edf2;--muted:#9aa6b2;--dim:#6b7682;--accent:#00f5c4;--accent2:#22d3ee;
  --glow:0 0 0 1px rgba(0,245,196,.18),0 10px 40px -12px rgba(0,245,196,.28);
  --radius:18px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,13,16,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand img{width:40px;height:40px;border-radius:50%;box-shadow:0 0 18px rgba(0,245,196,.35)}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.06em;line-height:1.1}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;line-height:1.3}
.nav{display:flex;gap:6px;flex-wrap:wrap}
.nav a{color:var(--muted);font-size:14px;padding:7px 14px;border-radius:999px;transition:.2s}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.06);text-decoration:none}
.nav a.active{color:#04110d;background:var(--accent)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:6px 12px;font-size:14px;font-family:inherit;cursor:pointer}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;transition:.2s;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#04110d;box-shadow:0 0 24px rgba(0,245,196,.35)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-dark{background:#050607;color:var(--text);border-color:rgba(0,245,196,.35)}
.btn-dark:hover{border-color:var(--accent)}
.btn-disabled{background:#1a2027;color:var(--dim);border-color:var(--line);cursor:not-allowed}

/* Hero */
.hero{position:relative;overflow:hidden;padding:88px 0 96px}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:720px;height:720px;background:radial-gradient(circle,rgba(0,245,196,.16),transparent 62%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:48px}
.eyebrow{display:inline-block;font-size:13px;color:var(--accent);border:1px solid rgba(0,245,196,.35);background:rgba(0,245,196,.06);padding:4px 14px;border-radius:999px;letter-spacing:.08em;margin-bottom:22px}
.hero h1{font-size:52px;line-height:1.2;font-weight:800;letter-spacing:.02em;margin-bottom:10px}
.hero h1 .en{display:block;font-size:22px;font-weight:500;color:var(--muted);letter-spacing:.2em;margin-top:10px}
.hero .lead{font-size:20px;color:var(--text);margin:26px 0 12px;max-width:640px}
.hero .desc{color:var(--muted);max-width:560px;margin-bottom:32px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-logo{justify-self:center;width:340px;max-width:100%;border-radius:32px;background:#000;box-shadow:var(--glow),0 0 80px -10px rgba(0,245,196,.25);overflow:hidden}

/* Sections */
section.block{padding:84px 0;border-top:1px solid var(--line)}
section.block.alt{background:var(--bg2)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head .kicker{color:var(--accent);font-size:13px;letter-spacing:.2em;margin-bottom:8px}
.sec-head h2{font-size:34px;font-weight:700}
.sec-head p{color:var(--muted);margin-top:10px}

.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.intro-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.intro-item h3{font-size:17px;margin-bottom:8px}
.intro-item p{color:var(--muted);font-size:15px}

.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s}
.feature:hover{box-shadow:var(--glow);border-color:rgba(0,245,196,.3);transform:translateY(-2px)}
.feature .ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(0,245,196,.1);border:1px solid rgba(0,245,196,.3);margin-bottom:18px}
.feature .ico svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feature h3{font-size:19px;margin-bottom:4px}
.feature .sub{color:var(--accent);font-size:13px;margin-bottom:12px}
.feature p{color:var(--muted);font-size:15px}

/* Pricing */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{position:relative;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:32px 28px;display:flex;flex-direction:column}
.plan.featured{border-color:rgba(0,245,196,.55);box-shadow:var(--glow),0 0 60px -20px rgba(0,245,196,.45);background:linear-gradient(180deg,rgba(0,245,196,.07),var(--card) 40%)}
.plan .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--accent);color:#04110d;font-size:13px;font-weight:700;padding:3px 16px;border-radius:999px}
.plan h3{font-size:20px;margin-bottom:14px}
.plan .price{display:flex;align-items:baseline;gap:4px;margin-bottom:20px}
.plan .price .cur{font-size:22px;color:var(--accent);font-weight:700}
.plan .price .num{font-size:46px;font-weight:800;line-height:1}
.plan .price .per{color:var(--muted);font-size:15px}
.plan ul{list-style:none;flex:1;margin-bottom:26px}
.plan li{position:relative;padding-left:26px;color:#c9d2db;font-size:15px;margin:10px 0}
.plan li::before{content:"";position:absolute;left:2px;top:7px;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.plan .btn{width:100%}
.price-note{text-align:center;color:var(--dim);font-size:13px;margin-top:26px}

/* Buy */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;counter-increment:s}
.step::before{content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#050607;border:1px solid rgba(0,245,196,.45);color:var(--accent);font-weight:700;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--muted);font-size:15px}
.download{margin-top:36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;background:var(--card);border:1px solid rgba(0,245,196,.25);border-radius:22px;padding:28px 32px;box-shadow:var(--glow)}
.download h3{font-size:20px;margin-bottom:4px}
.download p{color:var(--muted);font-size:15px}
.download .btns{display:flex;gap:12px;flex-wrap:wrap}

/* Contact */
.contact{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:800px;margin:0 auto}
.contact .val a{color:var(--text)}
.contact .val a:hover{color:var(--accent)}
.contact .item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.contact .label{color:var(--dim);font-size:13px;margin-bottom:6px}
.contact .val{font-size:16px}
.ph{color:var(--muted);border-bottom:1px dashed var(--dim)}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:#07090b;padding:40px 0 32px;color:var(--muted);font-size:14px}
.site-footer .top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:22px}
.site-footer .f-brand{display:flex;gap:12px;align-items:center}
.site-footer .f-brand img{width:36px;height:36px;border-radius:50%}
.site-footer .f-brand strong{color:var(--text);font-size:16px;display:block}
.site-footer .links{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.site-footer .links a{color:var(--muted)}
.site-footer .links a:hover{color:var(--accent)}
.site-footer .bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--dim);font-size:13px}
.site-footer .bottom a{color:var(--dim)}

/* Legal pages */
.legal{padding:56px 0 80px}
.legal .wrap{max-width:860px}
.legal h1{font-size:34px;margin-bottom:8px}
.legal .meta{color:var(--dim);font-size:14px;margin-bottom:20px}
.legal .notice{background:rgba(0,245,196,.07);border:1px solid rgba(0,245,196,.35);color:var(--accent);border-radius:12px;padding:10px 16px;font-size:14px;margin-bottom:32px}
.legal h2{font-size:20px;margin:30px 0 10px;padding-left:12px;border-left:3px solid var(--accent)}
.legal p,.legal li{color:#c3ccd5;font-size:15.5px}
.legal ul{padding-left:22px;margin:6px 0}
.legal li{margin:4px 0}
.legal p+p{margin-top:8px}
.legal .back{display:inline-block;margin-top:40px}

/* Responsive */
@media (max-width:1080px){
  .features{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#0b0d10;border-bottom:1px solid var(--line);padding:10px 16px 16px}
  .nav.open{display:flex}
  .hero{padding:48px 0 64px}
  .hero .wrap{grid-template-columns:1fr;gap:32px}
  .hero-logo{order:-1;width:200px;border-radius:24px}
  .hero h1{font-size:36px}
  .hero h1 .en{font-size:16px}
  .hero .lead{font-size:17px}
  .intro-grid,.pricing,.contact{grid-template-columns:1fr}
  .pricing{gap:30px}
  section.block{padding:60px 0}
  .sec-head h2{font-size:27px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .features,.steps{grid-template-columns:1fr}
  .brand-name{font-size:17px}
  .download{padding:22px}
  .download .btns,.download .btn{width:100%}
  .hero .actions .btn{flex:1}
}