:root {
  font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  color: #e7f0fa;
  background: #07111f;
  font-synthesis: none;
  --bg: #07111f;
  --panel: #0d1b2d;
  --panel-strong: #10233a;
  --line: #1d3854;
  --line-soft: rgba(52, 83, 113, .54);
  --muted: #8aa0b7;
  --text: #edf5ff;
  --primary: #548dff;
  --primary-2: #7669ff;
  --green: #2dd4a4;
  --radius: 18px;
  --shadow: 0 30px 80px rgba(0, 0, 0, .28);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; min-height: 100vh; background: radial-gradient(circle at 68% 0%, rgba(63, 111, 197, .16), transparent 36%), radial-gradient(circle at 8% 34%, rgba(93, 75, 206, .10), transparent 27%), var(--bg); color: var(--text); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .20; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, black, transparent 78%); }
a { color: inherit; }
button, input { font: inherit; }
button { cursor: pointer; }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; position: relative; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 200; padding: 10px 14px; border-radius: 9px; background: #fff; color: #07111f; transition: top .15s ease; }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(37, 65, 92, .75); background: rgba(7, 17, 31, .82); backdrop-filter: blur(18px); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { text-decoration: none; display: flex; flex-direction: column; gap: 4px; }
.wordmark-title { font-size: 15px; font-weight: 720; letter-spacing: .02em; }
.wordmark-subtitle { color: #7189a2; font-size: 9px; letter-spacing: .22em; }
.header-actions { display: flex; align-items: center; gap: 20px; font-size: 12px; }
.service-state { color: #a9bdd0; display: inline-flex; align-items: center; gap: 8px; }
.state-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(45, 212, 164, .08); }
.text-link { color: #a9bdd0; text-decoration: none; }
.text-link:hover { color: #fff; }
.hero { min-height: 590px; padding: 105px 0 78px; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(330px, .75fr); gap: 72px; align-items: center; }
.eyebrow { margin: 0 0 18px; color: #76a5ff; font-size: 10px; font-weight: 760; letter-spacing: .2em; }
.hero h1 { margin: 0; max-width: 730px; font-size: clamp(42px, 6.2vw, 72px); line-height: 1.08; letter-spacing: -.045em; font-weight: 760; }
.hero-lead { max-width: 680px; margin: 28px 0 0; color: #9bb0c5; font-size: 16px; line-height: 1.85; }
.release-facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.release-facts span { padding: 8px 11px; border: 1px solid var(--line-soft); border-radius: 8px; background: rgba(13, 29, 48, .74); color: #9db2c6; font-size: 11px; }
.platform-notice { margin-top: 18px; max-width: 630px; padding: 12px 14px; border: 1px solid rgba(242, 189, 90, .28); border-radius: 10px; background: rgba(242, 189, 90, .07); color: #d8bf86; font-size: 12px; line-height: 1.6; }
.network-card { border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(155deg, rgba(17, 37, 61, .96), rgba(9, 23, 39, .96)); box-shadow: var(--shadow); overflow: hidden; }
.network-card-head { padding: 22px 24px; border-bottom: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 6px; }
.network-card-head span { color: var(--muted); font-size: 10px; letter-spacing: .14em; }
.network-card-head strong { font-size: 15px; }
.connection-flow { list-style: none; margin: 0; padding: 8px 24px 18px; }
.connection-flow li { display: grid; grid-template-columns: 42px 1fr; gap: 12px; padding: 18px 0; border-bottom: 1px solid rgba(45, 70, 95, .58); }
.connection-flow li:last-child { border: 0; }
.flow-index { color: #6b98e8; font: 11px/1.4 "Cascadia Code", monospace; }
.connection-flow strong, .connection-flow small { display: block; }
.connection-flow strong { font-size: 13px; }
.connection-flow small { margin-top: 7px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.download-section, .comparison-section, .trust-section, .faq-section { padding: 80px 0; }
.section-heading { margin-bottom: 28px; display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; }
.section-heading h2, .trust-copy h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.035em; }
.section-heading > p { max-width: 560px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.section-heading.compact { margin-bottom: 24px; }
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.download-card { min-width: 0; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(15, 32, 53, .96), rgba(9, 23, 39, .96)); box-shadow: 0 20px 60px rgba(0, 0, 0, .16); }
.download-card.featured { border-color: rgba(84, 141, 255, .62); box-shadow: 0 24px 72px rgba(42, 91, 181, .17); }
.card-topline { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.recommend-badge, .subtle-badge { min-height: 25px; display: inline-flex; align-items: center; padding: 0 9px; border-radius: 7px; font-size: 10px; font-weight: 720; }
.recommend-badge { color: #dce9ff; background: rgba(84, 141, 255, .18); border: 1px solid rgba(84, 141, 255, .32); }
.subtle-badge { color: #b9cadb; background: rgba(255, 255, 255, .045); border: 1px solid var(--line-soft); }
.file-meta { color: var(--muted); font: 10px/1.4 "Cascadia Code", monospace; }
.card-heading { margin: 30px 0 25px; }
.card-heading p { margin: 0 0 8px; color: var(--muted); font-size: 11px; }
.card-heading h3 { margin: 0; font-size: 26px; letter-spacing: -.025em; }
.feature-list { list-style: none; margin: 0 0 28px; padding: 0; display: grid; gap: 1px; border-top: 1px solid var(--line-soft); }
.feature-list li { padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.feature-list strong, .feature-list span { display: block; }
.feature-list strong { font-size: 12px; }
.feature-list span { margin-top: 6px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.download-button { width: 100%; min-height: 52px; padding: 0 17px; display: flex; justify-content: space-between; align-items: center; border-radius: 11px; text-decoration: none; font-size: 13px; font-weight: 700; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.download-button:hover { transform: translateY(-1px); }
.download-button span { font: 10px/1 "Cascadia Code", monospace; opacity: .72; }
.download-button.primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2)); border: 1px solid #6999ff; box-shadow: 0 12px 30px rgba(75, 119, 229, .22); }
.download-button.secondary { color: #dfeaf7; background: #12263e; border: 1px solid #2c4a68; }
.download-button.secondary:hover { border-color: #4b7095; background: #162d48; }
.checksum-row { margin-top: 16px; display: flex; justify-content: space-between; align-items: flex-end; gap: 14px; }
.checksum-row > div { min-width: 0; }
.checksum-row span { display: block; margin-bottom: 5px; color: #71879e; font-size: 9px; letter-spacing: .12em; }
.checksum-row code { color: #9db8d3; font: 10px/1.4 "Cascadia Code", monospace; }
.copy-button { padding: 0; border: 0; color: #79a7ff; background: transparent; font-size: 11px; white-space: nowrap; }
.copy-button:hover { color: #a9c5ff; text-decoration: underline; }
.advanced-download { margin-top: 16px; padding: 18px 20px; border: 1px solid var(--line-soft); border-radius: 13px; background: rgba(10, 25, 42, .76); display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.advanced-download strong, .advanced-download span { display: block; }
.advanced-download strong { font-size: 12px; }
.advanced-download span { margin-top: 5px; color: var(--muted); font-size: 11px; }
.advanced-download a { color: #8db2ff; font-size: 11px; white-space: nowrap; }
.comparison-section { border-top: 1px solid rgba(38, 65, 91, .52); }
.comparison-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 15px; background: rgba(11, 26, 44, .86); }
.comparison-table { width: 100%; min-width: 680px; border-collapse: collapse; }
.comparison-table th, .comparison-table td { padding: 17px 20px; text-align: left; border-bottom: 1px solid var(--line-soft); font-size: 12px; }
.comparison-table th { color: #849bb1; font-size: 10px; letter-spacing: .08em; background: rgba(17, 35, 58, .72); }
.comparison-table td:first-child { color: #8ea3b8; width: 28%; }
.comparison-table tbody tr:last-child td { border-bottom: 0; }
.comparison-table .positive { color: #64dfbb; }
.trust-section { display: grid; grid-template-columns: .78fr 1.22fr; gap: 72px; align-items: center; border-top: 1px solid rgba(38, 65, 91, .52); }
.trust-copy p:last-child { margin: 22px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.trust-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 17px; overflow: hidden; background: rgba(11, 27, 45, .82); }
.trust-grid div { min-height: 130px; padding: 25px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.trust-grid div:nth-child(2n) { border-right: 0; }
.trust-grid div:nth-last-child(-n+2) { border-bottom: 0; }
.trust-grid strong, .trust-grid span { display: block; }
.trust-grid strong { font-size: 13px; }
.trust-grid span { margin-top: 9px; color: var(--muted); font-size: 11px; line-height: 1.6; }
.faq-section { border-top: 1px solid rgba(38, 65, 91, .52); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 21px 2px; cursor: pointer; font-size: 13px; font-weight: 650; }
.faq-list summary::marker { color: #6b9eff; }
.faq-list p { max-width: 820px; margin: -2px 0 22px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.site-footer { border-top: 1px solid var(--line); background: rgba(5, 13, 24, .58); }
.footer-inner { min-height: 112px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-inner strong, .footer-inner span { display: block; }
.footer-inner strong { font-size: 12px; }
.footer-inner span { margin-top: 5px; color: #71879e; font-size: 10px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: #8da4bb; font-size: 11px; }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 300; transform: translate(-50%, 24px); padding: 11px 15px; border: 1px solid #315171; border-radius: 10px; background: #10243a; box-shadow: var(--shadow); color: #e5f0fb; font-size: 11px; opacity: 0; visibility: hidden; transition: .2s ease; }
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
@media (max-width: 900px) {
  .hero { min-height: auto; padding: 78px 0 64px; grid-template-columns: 1fr; gap: 42px; }
  .network-card { max-width: 620px; }
  .download-grid, .trust-section { grid-template-columns: 1fr; }
  .trust-section { gap: 35px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 14px; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1160px); }
  .site-header { position: relative; }
  .header-inner { min-height: 66px; }
  .service-state { display: none; }
  .hero { padding-top: 58px; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 14px; }
  .download-section, .comparison-section, .trust-section, .faq-section { padding: 58px 0; }
  .download-card { padding: 22px; }
  .checksum-row, .advanced-download, .footer-inner { align-items: flex-start; flex-direction: column; }
  .advanced-download a { white-space: normal; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div, .trust-grid div:nth-child(2n), .trust-grid div:nth-last-child(-n+2) { min-height: 112px; border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .trust-grid div:last-child { border-bottom: 0; }
  .footer-inner { padding: 28px 0; }
  .footer-links { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}