:root {
  --ink: #0b1026;
  --ink-soft: #131b3a;
  --violet: #7c5cff;
  --cyan: #36d7d2;
  --gold: #f5d77b;
  --paper: #f5f7ff;
  --muted: #9ba5c7;
  --line: rgba(255, 255, 255, 0.12);
  --shadow: 0 20px 55px rgba(4, 8, 28, 0.3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: #eef1ff; background: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", sans-serif; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(18px); background: rgba(11, 16, 38, .84); border-bottom: 1px solid var(--line); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: 1px; }
.brand img { width: 38px; height: 38px; border-radius: 12px; }
.brand span { font-size: 18px; }
.navlinks { display: flex; align-items: center; gap: 6px; }
.navlinks a { padding: 8px 14px; color: var(--muted); border-radius: 10px; font-size: 14px; }
.navlinks a:hover, .navlinks a.active { color: #fff; background: rgba(124, 92, 255, .18); }
.nav-cta, .download-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 12px; padding: 12px 20px; color: #11152b; background: var(--gold); font-weight: 700; box-shadow: 0 8px 24px rgba(245, 215, 123, .2); transition: transform .2s, box-shadow .2s; }
.nav-cta:hover, .download-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(245, 215, 123, .28); }
.hero { position: relative; overflow: hidden; padding: 100px 0 112px; background: radial-gradient(circle at 75% 15%, rgba(124, 92, 255, .26), transparent 32%), radial-gradient(circle at 10% 95%, rgba(54, 215, 210, .14), transparent 36%); }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .32; background-image: radial-gradient(#fff 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(120deg, transparent, #000 50%, transparent); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 70px; }
.eyebrow { margin: 0 0 18px; color: var(--gold); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -.02em; }
h1 { max-width: 640px; font-size: clamp(42px, 6vw, 78px); }
.hero-copy { max-width: 620px; margin: 24px 0 0; color: #bac3e1; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.ghost-btn { display: inline-flex; align-items: center; justify-content: center; padding: 11px 18px; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; color: #eef1ff; }
.hero-metrics { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 42px; }
.metric strong { display: block; color: #fff; font-size: 24px; }
.metric span { color: var(--muted); font-size: 13px; }
.phone-stack { position: relative; min-height: 440px; }
.phone { position: absolute; width: min(230px, 46vw); padding: 8px; border: 1px solid rgba(255,255,255,.18); border-radius: 28px; background: #141c3d; box-shadow: var(--shadow); }
.phone img { width: 100%; border-radius: 21px; }
.phone.one { top: 0; right: 22%; transform: rotate(-7deg); }
.phone.two { top: 92px; right: 0; transform: rotate(8deg); }
.section { padding: 92px 0; }
.section.alt { background: var(--paper); color: var(--ink); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); }
.section-head p { max-width: 460px; margin: 0; color: var(--muted); }
.alt .section-head p { color: #65708f; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { min-height: 220px; padding: 26px; border: 1px solid rgba(255,255,255,.1); border-radius: 18px; background: linear-gradient(145deg, rgba(30,40,80,.86), rgba(18,25,55,.9)); }
.feature:nth-child(2) { border-color: rgba(54,215,210,.35); }
.feature:nth-child(3) { border-color: rgba(245,215,123,.35); }
.feature .icon { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; color: var(--ink); background: var(--gold); font-size: 20px; }
.feature h3 { margin-top: 20px; font-size: 21px; }
.feature p { margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.screens { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: start; }
.screen-card { padding: 10px; border: 1px solid #dfe4f7; border-radius: 18px; background: #fff; box-shadow: 0 12px 28px rgba(17, 27, 68, .08); }
.screen-card img { width: 100%; max-width: 400px; margin: 0 auto; border-radius: 12px; }
.screen-card figcaption { padding: 13px 5px 4px; color: #4d5b7e; font-size: 13px; }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 54px; align-items: start; }
.split h2 { font-size: clamp(30px, 4vw, 48px); }
.split > div > p, .split-copy p { color: var(--muted); }
.list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.list li { display: flex; gap: 14px; align-items: start; padding: 18px 0; border-bottom: 1px solid var(--line); }
.list b { color: var(--gold); font-size: 18px; }
.list span { color: #c3cae1; }
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quote { padding: 25px; border-radius: 16px; background: #fff; color: var(--ink); }
.quote p { margin: 0; color: #465274; }
.quote cite { display: block; margin-top: 16px; color: #7883a2; font-size: 13px; font-style: normal; }
.banner { padding: 34px; border: 1px solid rgba(124,92,255,.4); border-radius: 20px; background: linear-gradient(110deg, #191c50, #152d4d); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.banner-sub { margin-top: 8px; color: #b9c3e1; }
.footer { padding: 36px 0 46px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; }
.footer small { display: block; max-width: 720px; margin-top: 12px; }
.page-hero { padding: 76px 0 70px; background: linear-gradient(120deg, #171a45, #101c37); }
.page-hero h1 { font-size: clamp(36px, 5vw, 60px); }
.page-hero p { max-width: 730px; margin: 20px 0 0; color: #bac4e3; font-size: 17px; }
.article { color: var(--ink); background: var(--paper); }
.article h2 { margin-top: 44px; font-size: 30px; }
.article h3 { margin-top: 28px; font-size: 21px; }
.article p, .article li { color: #4f5b79; }
.article ul, .article ol { padding-left: 24px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 30px 0 10px; }
.step { padding: 22px; border-radius: 16px; background: #fff; border: 1px solid #dfe4f7; }
.step-no { color: var(--violet); font-size: 14px; font-weight: 700; letter-spacing: 2px; }
.step h3 { margin-top: 14px; }
.step p { margin-bottom: 0; font-size: 14px; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { padding: 20px 22px; border: 1px solid #dfe4f7; border-radius: 14px; background: #fff; }
.faq-list summary { cursor: pointer; color: var(--ink); font-weight: 700; }
.faq-list p { margin: 13px 0 0; }
@media (max-width: 860px) { .hero-grid, .split { grid-template-columns: 1fr; gap: 40px; } .phone-stack { min-height: 390px; max-width: 520px; } .feature-grid, .quote-grid { grid-template-columns: 1fr 1fr; } .screens { grid-template-columns: repeat(2, 1fr); } .steps { grid-template-columns: 1fr; } }
@media (max-width: 620px) { .wrap { width: min(100% - 28px, 520px); } .nav { min-height: 68px; } .navlinks { gap: 0; } .navlinks a { padding: 7px 8px; font-size: 12px; } .nav-cta { display: none; } .hero { padding: 72px 0 80px; } .hero-copy { font-size: 16px; } .hero-metrics { gap: 18px; } .section { padding: 68px 0; } .feature-grid, .quote-grid { grid-template-columns: 1fr; } .screens { gap: 10px; } .banner, .footer-row { align-items: flex-start; flex-direction: column; } h1 { font-size: 44px; } }