:root { color: #e9f1f7; background: #071827; font-family: Inter, "Microsoft YaHei", sans-serif; font-synthesis: none; scroll-behavior: smooth; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: radial-gradient(circle at 75% 8%, #153b5c 0, transparent 34rem), #071827; }
a { color: inherit; text-decoration: none; }
.page-shell { width: min(1180px, calc(100% - 48px)); margin: auto; }
.topbar { position: relative; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 24px 0; border-bottom: 1px solid rgba(214, 235, 249, .14); }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; font-size: 19px; font-weight: 750; letter-spacing: .04em; }
.brand img { width: 42px; height: 42px; border-radius: 13px; box-shadow: 0 8px 24px rgba(0, 95, 189, .28); }
.top-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; color: #8eaabd; font-size: 13px; }
.top-nav a, .top-link { transition: color .2s; }
.top-nav a:hover, .top-nav a:focus-visible, .top-link:hover, .top-link:focus-visible { color: #fff; }
.top-link { flex: none; color: #c1d8e6; font-size: 14px; }
.hero { display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 80px; min-height: 635px; padding: 70px 0 80px; }
.hero-copy { min-width: 0; }
.eyebrow { margin: 0 0 18px; color: #70a8d3; font-size: 11px; font-weight: 800; letter-spacing: .23em; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; color: #f5fbff; font-size: clamp(43px, 6vw, 76px); line-height: 1.08; letter-spacing: -.06em; }
h1 em { color: #f59b48; font-style: normal; }
.hero-text { max-width: 560px; color: #a9c0cf; font-size: 17px; line-height: 1.85; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.service-tags span { padding: 7px 10px; border: 1px solid rgba(112, 168, 211, .22); border-radius: 999px; color: #bbd6e7; background: rgba(20, 62, 91, .42); font-size: 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 13px; margin: 28px 0 18px; }
.primary-button, .secondary-button { display: inline-flex; align-items: center; gap: 20px; padding: 14px 20px; border-radius: 12px; font-weight: 700; font-size: 14px; transition: transform .2s, box-shadow .2s; }
.primary-button { color: #06131e; background: #f59b48; box-shadow: 0 12px 28px rgba(245, 155, 72, .2); }
.secondary-button { color: #d6e8f5; border: 1px solid rgba(214, 235, 249, .22); }
.primary-button:hover, .primary-button:focus-visible, .secondary-button:hover, .secondary-button:focus-visible { transform: translateY(-2px); }
.version-note { color: #6f899a; font-size: 12px; }
.hero-art { position: relative; min-height: 425px; display: grid; place-items: center; }
.glow { position: absolute; width: 350px; height: 350px; border-radius: 50%; background: #0b65a6; filter: blur(85px); opacity: .36; }
.device-card { position: relative; width: min(340px, 82%); padding: 24px; border: 1px solid rgba(227, 246, 255, .25); border-radius: 26px; background: linear-gradient(145deg, rgba(18, 66, 98, .95), rgba(10, 28, 44, .94)); box-shadow: 20px 28px 60px rgba(0, 0, 0, .32); transform: rotate(4deg); }
.device-top, .device-footer, .device-list div { display: flex; align-items: center; }
.device-top { gap: 8px; color: #cce4f2; font-size: 11px; }
.device-dot { width: 7px; height: 7px; border-radius: 50%; background: #f59b48; }
.device-label { font-weight: 700; }
.device-signal { margin-left: auto; color: #6f9ab5; font-size: 8px; letter-spacing: 2px; }
.device-title { margin-top: 35px; color: #fff; font-size: 27px; font-weight: 700; letter-spacing: -.04em; }
.device-subtitle { margin-top: 8px; color: #8fb2c7; font-size: 12px; }
.device-list { margin: 26px 0; padding: 11px 0; border-top: 1px solid rgba(214, 235, 249, .12); border-bottom: 1px solid rgba(214, 235, 249, .12); }
.device-list div { gap: 9px; padding: 11px 0; color: #d3e6f1; font-size: 12px; }
.device-list b { margin-left: auto; color: #83b0ca; font-size: 10px; font-weight: 500; }
.status-icon { display: grid; place-items: center; width: 25px; height: 25px; border-radius: 8px; font-size: 13px; font-weight: 800; }
.blue { color: #6fb6ff; background: rgba(76, 154, 243, .18); }
.orange { color: #ffad60; background: rgba(245, 155, 72, .17); }
.green { color: #71d3b1; background: rgba(76, 192, 157, .17); }
.device-footer { flex-wrap: wrap; gap: 7px; color: #87a8bb; font-size: 11px; }
.device-footer strong { margin-left: auto; color: #fff; font-size: 20px; }
.progress { width: 100%; height: 5px; overflow: hidden; border-radius: 5px; background: rgba(214, 235, 249, .12); }
.progress i { display: block; width: 78%; height: 100%; border-radius: inherit; background: #f59b48; }
.floating-badge { position: absolute; right: 1%; bottom: 28px; display: flex; align-items: center; gap: 11px; padding: 13px 16px; border: 1px solid rgba(214, 235, 249, .2); border-radius: 14px; background: rgba(13, 42, 63, .9); box-shadow: 0 14px 28px rgba(0,0,0,.24); transform: rotate(-3deg); }
.floating-badge > span { color: #70d2a9; }
.floating-badge b, .floating-badge small { display: block; }
.floating-badge b { color: #e4f5fc; font-size: 11px; }
.floating-badge small { margin-top: 3px; color: #7799aa; font-size: 10px; }
.business-section, .pricing-section, .flow-section, .after-sales-section, .feature-section { padding: 84px 0 90px; border-top: 1px solid rgba(214, 235, 249, .14); scroll-margin-top: 20px; }
.section-heading h2, .pricing-intro h2, .download-section h2 { max-width: 680px; margin-bottom: 38px; color: #f3faff; font-size: clamp(28px, 4vw, 43px); line-height: 1.2; letter-spacing: -.045em; }
.split-heading { display: grid; grid-template-columns: 1fr .8fr; gap: 60px; align-items: end; margin-bottom: 36px; }
.split-heading h2 { margin-bottom: 0; }
.split-heading > p { margin: 0; color: #8faabb; line-height: 1.8; }
.business-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
.business-card { padding: 32px; border: 1px solid rgba(214, 235, 249, .14); border-radius: 20px; background: rgba(17, 51, 75, .34); }
.featured-card { background: linear-gradient(135deg, rgba(17, 64, 96, .72), rgba(14, 42, 62, .55)); }
.business-card h3 { margin: 16px 0 13px; color: #f1f9fd; font-size: 25px; }
.business-card p { color: #9db5c5; line-height: 1.8; }
.card-label { color: #f4a35a; font-size: 11px; font-weight: 800; letter-spacing: .15em; }
.check-list { display: grid; gap: 10px; margin: 24px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 25px; color: #d8e9f3; font-size: 14px; }
.check-list li::before { position: absolute; left: 0; content: "✓"; color: #72d1af; font-weight: 800; }
.card-note { margin: 25px 0 0; padding-top: 20px; border-top: 1px solid rgba(214, 235, 249, .12); font-size: 13px; }
.pricing-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.pricing-intro h2 { margin-bottom: 18px; }
.pricing-intro > p:not(.eyebrow) { color: #8faabb; line-height: 1.8; }
.price-card { display: grid; grid-template-columns: .65fr 1.35fr; gap: 32px; align-items: center; padding: 34px; border: 1px solid rgba(245, 155, 72, .35); border-radius: 22px; background: linear-gradient(135deg, rgba(245, 155, 72, .13), rgba(17, 51, 75, .42)); box-shadow: 0 24px 55px rgba(0, 0, 0, .15); }
.price-card strong { display: block; margin-top: 10px; color: #fff; font-size: 58px; letter-spacing: -.05em; }
.price-card strong small { color: #f7b87f; font-size: 16px; letter-spacing: 0; }
.price-card ul { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.price-card li { display: grid; grid-template-columns: 78px 1fr; gap: 14px; font-size: 13px; line-height: 1.65; }
.price-card li b { color: #d9ebf5; }
.price-card li span { color: #91acbd; }
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 0; padding: 0; list-style: none; }
.flow-grid li { min-height: 205px; padding: 26px; border: 1px solid rgba(214, 235, 249, .14); border-radius: 17px; background: rgba(17, 51, 75, .3); }
.flow-grid li > span { color: #f59b48; font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.flow-grid h3 { margin: 38px 0 10px; color: #eaf7ff; font-size: 19px; }
.flow-grid p { margin: 0; color: #8faabb; font-size: 13px; line-height: 1.8; }
.policy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.policy-grid article { padding: 26px; border-left: 2px solid #376f94; background: rgba(17, 51, 75, .25); }
.policy-grid h3 { margin-bottom: 10px; color: #eaf7ff; font-size: 18px; }
.policy-grid p { margin: 0; color: #8faabb; font-size: 13px; line-height: 1.85; }
.support-phone { color: #f7b87f; font-weight: 800; white-space: nowrap; }
.support-phone:hover, .support-phone:focus-visible { color: #ffd3aa; text-decoration: underline; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { position: relative; padding: 30px; border: 1px solid rgba(214, 235, 249, .14); border-radius: 17px; background: rgba(17, 51, 75, .34); }
.feature-number { position: absolute; top: 25px; right: 27px; color: #557789; font-size: 11px; letter-spacing: .12em; }
.feature-icon { display: grid; place-items: center; width: 43px; height: 43px; margin-bottom: 44px; border-radius: 12px; font-size: 22px; font-weight: 800; }
.blue-bg { color: #71b5ff; background: rgba(66, 146, 237, .17); }
.orange-bg { color: #ffae65; background: rgba(245, 155, 72, .17); }
.green-bg { color: #79dbb9; background: rgba(65, 189, 152, .17); }
.feature-card h3 { margin-bottom: 10px; color: #eaf7ff; font-size: 20px; }
.feature-card p { margin: 0; color: #8faabb; font-size: 14px; line-height: 1.8; }
.download-section { display: grid; grid-template-columns: 1fr .75fr; gap: 60px; align-items: center; padding: 70px 0 74px; border-top: 1px solid rgba(214, 235, 249, .14); }
.download-section h2 { margin-bottom: 14px; }
.download-section p:not(.eyebrow) { max-width: 510px; color: #8faabb; line-height: 1.8; }
.download-options { display: grid; gap: 10px; }
.download-options a { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border: 1px solid rgba(214, 235, 249, .15); border-radius: 12px; color: #d9ecf6; background: rgba(17, 51, 75, .36); transition: background .2s, border-color .2s; }
.download-options a:hover, .download-options a:focus-visible { border-color: #4d8db5; background: rgba(23, 75, 108, .55); }
.download-options span { font-weight: 700; }
.download-options b { color: #f59b48; font-size: 13px; }
.download-options i { font-style: normal; font-size: 18px; }
footer { display: flex; justify-content: space-between; gap: 30px; padding: 26px 0 38px; border-top: 1px solid rgba(214, 235, 249, .14); color: #60798a; font-size: 12px; }
footer div, footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
footer b { color: #89a7b8; }
footer div a { color: #d0e4ef; font-weight: 700; }
footer a:hover, footer a:focus-visible { color: #cce2ee; }
@media (max-width: 980px) { .top-nav { display: none; }.pricing-section { grid-template-columns: 1fr; gap: 24px; }.flow-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 800px) { .page-shell { width: min(610px, calc(100% - 32px)); }.hero { grid-template-columns: 1fr; gap: 20px; padding-top: 55px; }.hero-art { min-height: 370px; }.business-grid, .split-heading, .feature-grid, .download-section { grid-template-columns: 1fr; }.business-section, .pricing-section, .flow-section, .after-sales-section, .feature-section { padding: 60px 0 65px; }.split-heading { gap: 18px; align-items: start; }.split-heading h2 { margin-bottom: 0; }.download-section { gap: 22px; }.topbar { padding: 20px 0; }.price-card { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .top-link { font-size: 12px; }.flow-grid, .policy-grid { grid-template-columns: 1fr; }.flow-grid li { min-height: 0; }.price-card { padding: 26px; }.price-card li { grid-template-columns: 1fr; gap: 2px; } }
@media (max-width: 480px) { h1 { font-size: 43px; }.hero-text { font-size: 15px; }.actions { align-items: stretch; flex-direction: column; }.primary-button, .secondary-button { justify-content: space-between; }.device-card { width: 88%; }.floating-badge { right: -2%; bottom: 10px; } footer { flex-direction: column; gap: 16px; } }
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }