:root {
  --ink: #f4f7f5;
  --muted: #9ba8a1;
  --panel: rgba(17, 25, 22, 0.86);
  --line: rgba(148, 163, 154, 0.18);
}

* { box-sizing: border-box; }
html { background: #070b09; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: radial-gradient(circle at 50% -10%, rgba(20, 122, 69, 0.28), transparent 38rem), linear-gradient(180deg, #080d0a 0%, #090e0c 62%, #060806 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: inherit; }
.wechat-notice { position: sticky; top: 0; z-index: 50; display: none; justify-content: center; gap: 12px; padding: 13px 20px; color: #07130c; background: #a7f3c0; box-shadow: 0 8px 30px rgba(0,0,0,.24); }
.wechat-browser .wechat-notice { display: flex; }
.wechat-notice p { margin: 0; font-size: 14px; line-height: 1.55; }
.wechat-notice strong { margin-right: 10px; }
.wechat-notice-icon { flex: 0 0 auto; width: 25px; height: 25px; display: grid; place-items: center; border-radius: 50%; color: #d9ffe5; background: #0d5228; font-weight: 900; }
.site-shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.topbar { height: 76px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 700; }
.brand img { width: 38px; height: 38px; border-radius: 11px; object-fit: cover; }
.official-badge { color: #b9f6cc; background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.22); padding: 7px 12px; border-radius: 999px; font-size: 13px; }
.hero { padding: 80px 0 44px; text-align: center; }
.eyebrow { margin: 0 0 14px; color: #6ee7a0; font-size: 13px; font-weight: 700; letter-spacing: .16em; }
.hero h1 { margin: 0; font-size: clamp(38px, 7vw, 68px); line-height: 1.08; letter-spacing: -.045em; }
.hero-copy { max-width: 580px; margin: 20px auto 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.app-card { position: relative; overflow: hidden; min-height: 360px; border: 1px solid var(--line); border-radius: 24px; background: var(--panel); padding: 24px; box-shadow: 0 26px 80px rgba(0,0,0,.24); }
.app-card::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 30% 0%, rgba(34,197,94,.12), transparent 52%); }
.app-card.amber::before { background: radial-gradient(circle at 30% 0%, rgba(245,158,11,.12), transparent 52%); }
.app-card.blue::before { background: radial-gradient(circle at 30% 0%, rgba(59,130,246,.14), transparent 52%); }
.app-icon { position: relative; width: 112px; height: 112px; margin-bottom: 30px; border-radius: 24px; overflow: hidden; border: 1px solid rgba(255,255,255,.12); background: #020403; }
.app-icon img { width: 100%; height: 100%; object-fit: cover; }
.app-content { position: relative; }
.platform { color: #83dba1; margin: 0 0 8px; font-size: 12px; font-weight: 700; letter-spacing: .05em; }
.amber .platform { color: #f6c565; }
.blue .platform { color: #8fbfff; }
.app-card h2 { margin: 0; font-size: 27px; letter-spacing: -.02em; }
.app-title-link { text-decoration: none; }
.meta { margin: 10px 0 24px; color: var(--muted); font-size: 14px; }
.download-button { display: flex; min-height: 50px; align-items: center; justify-content: center; border-radius: 13px; text-decoration: none; font-weight: 750; background: #e8fff0; color: #0b3b20; transition: transform .18s ease, background .18s ease; }
.download-button:hover { transform: translateY(-2px); background: #fff; }
.detail-link { display: block; margin-top: 14px; color: var(--muted); text-align: center; text-decoration: none; font-size: 13px; }
.detail-link:hover { color: var(--ink); }
.master-qr-panel { margin: 24px 0 0; display: grid; grid-template-columns: 184px 1fr; gap: 28px; align-items: center; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(18,32,24,.92), rgba(10,15,12,.8)); border-radius: 22px; padding: 26px; }
.master-qr-frame { padding: 10px; border-radius: 16px; background: #fff; }
.master-qr-frame img { width: 100%; display: block; }
.master-qr-panel h2 { margin: 0; font-size: 28px; }
.master-qr-panel p:not(.section-kicker) { max-width: 610px; margin: 11px 0 16px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.master-qr-panel a { color: #8ef0ad; text-decoration: none; font-size: 13px; font-weight: 700; }
.install-note { margin: 24px 0 0; display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr; gap: 14px; align-items: start; border: 1px solid var(--line); background: rgba(13,19,16,.72); border-radius: 20px; padding: 24px; }
.install-note p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.install-note strong { color: var(--ink); font-size: 14px; }
.step-number { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: rgba(34,197,94,.13); color: #7bf0a4; font-weight: 800; font-size: 13px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 32px 0 42px; color: #748079; font-size: 12px; }
footer p { margin: 0; }
footer a { text-decoration: none; }

.back-link { color: var(--muted); text-decoration: none; font-size: 14px; }
.detail-page::before { content: ""; position: fixed; inset: 0; pointer-events: none; background: radial-gradient(circle at 78% 8%, rgba(34,197,94,.12), transparent 26rem); }
.detail-page.amber::before { background: radial-gradient(circle at 78% 8%, rgba(245,158,11,.11), transparent 26rem); }
.detail-page.blue::before { background: radial-gradient(circle at 78% 8%, rgba(59,130,246,.12), transparent 26rem); }
.detail-hero { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 68px; align-items: center; min-height: 610px; padding: 72px 0; }
.detail-main { max-width: 650px; }
.detail-icon { width: 112px; height: 112px; margin-bottom: 24px; overflow: hidden; border: 1px solid rgba(255,255,255,.14); border-radius: 26px; box-shadow: 0 20px 60px rgba(0,0,0,.36); }
.detail-icon img { width: 100%; height: 100%; object-fit: cover; }
.detail-main h1 { margin: 0; font-size: clamp(46px, 7vw, 76px); line-height: 1.06; letter-spacing: -.05em; }
.detail-description { margin: 18px 0 0; color: var(--muted); font-size: 18px; line-height: 1.75; }
.version-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0; }
.version-row span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: #bbc5bf; font-size: 12px; }
.detail-download { width: min(100%, 420px); min-height: 58px; font-size: 17px; }
.download-tip { margin: 12px 0 0; color: #748079; font-size: 12px; }
.qr-panel { padding: 22px; border: 1px solid var(--line); border-radius: 24px; background: rgba(15,22,18,.82); text-align: center; }
.qr-frame { aspect-ratio: 1; margin-bottom: 16px; padding: 12px; border-radius: 16px; background: #fff; }
.qr-frame img { width: 100%; height: 100%; display: block; }
.qr-panel strong { font-size: 17px; }
.qr-panel p { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.detail-section { display: grid; grid-template-columns: 280px 1fr; gap: 54px; padding: 48px 0; border-top: 1px solid var(--line); }
.section-kicker { margin: 0 0 8px; color: #6ee7a0; font-size: 12px; font-weight: 750; letter-spacing: .12em; }
.detail-section h2, .verify-card h2 { margin: 0; font-size: 28px; }
.install-list { margin: 0; padding: 0; list-style: none; }
.install-list li { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 0 0 26px; }
.install-list li:last-child { padding-bottom: 0; }
.install-list li > span { color: #64de8f; font: 700 12px/1 ui-monospace, monospace; padding-top: 4px; }
.install-list strong { font-size: 16px; }
.install-list p { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.verify-card { display: grid; grid-template-columns: 280px 1fr; gap: 54px; margin: 20px 0 0; padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: rgba(13,19,16,.72); }
.verify-card dl { margin: 0; min-width: 0; }
.verify-card dl div { display: grid; grid-template-columns: 170px minmax(0,1fr); gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.verify-card dl div:last-child { border-bottom: 0; }
.verify-card dt { color: var(--muted); font-size: 12px; }
.verify-card dd { margin: 0; overflow-wrap: anywhere; color: #c9d5ce; font: 11px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; }

@media (max-width: 820px) {
  .hero { padding-top: 56px; }
  .app-grid { grid-template-columns: 1fr; }
  .app-card { min-height: 0; display: grid; grid-template-columns: 88px 1fr; gap: 18px; align-items: center; }
  .app-icon { width: 88px; height: 88px; margin: 0; border-radius: 20px; }
  .download-button { margin-top: 18px; }
  .meta { margin-bottom: 0; }
  .install-note { grid-template-columns: auto 1fr; }
  .master-qr-panel { grid-template-columns: 150px 1fr; }
  .detail-hero { grid-template-columns: 1fr; gap: 28px; min-height: 0; padding: 52px 0; }
  .qr-panel { display: grid; grid-template-columns: 132px 1fr; gap: 18px; align-items: center; text-align: left; }
  .qr-frame { margin: 0; }
  .detail-section, .verify-card { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 520px) {
  .site-shell { width: min(100% - 22px, 1120px); }
  .topbar { height: 66px; }
  .hero { padding: 44px 8px 30px; }
  .hero-copy { font-size: 15px; }
  .app-card { display: block; padding: 20px; border-radius: 20px; }
  .app-icon { width: 82px; height: 82px; margin-bottom: 18px; }
  footer { display: block; line-height: 1.8; }
  .detail-hero { padding-top: 38px; }
  .detail-icon { width: 86px; height: 86px; border-radius: 21px; }
  .detail-description { font-size: 15px; }
  .detail-download { width: 100%; }
  .qr-panel { display: block; text-align: center; }
  .master-qr-panel { grid-template-columns: 1fr; text-align: center; }
  .master-qr-frame { width: min(100%, 220px); margin: 0 auto; }
  .master-qr-panel p:not(.section-kicker) { margin-left: auto; margin-right: auto; }
  .qr-frame { width: min(100%, 240px); margin: 0 auto 16px; }
  .verify-card { padding: 22px 18px; }
  .verify-card dl div { grid-template-columns: 1fr; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) { .download-button { transition: none; } }