:root {
  --g: #22c55e;
  --g2: #16a34a;
  --b: #2f7bff;
  --bg: #0b0f14;
  --ink: #eaf2ee;
  --ink-soft: #9fb3ac;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.10);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.ic { width: 22px; height: 22px; display: block; }

/* 静态背景：仅渐变，无动画、无重绘 */
.bg-grad {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(1000px 600px at 82% -10%, #0d3326 0%, transparent 55%),
    radial-gradient(900px 600px at -8% 18%, #0a2233 0%, transparent 55%),
    linear-gradient(160deg, #070b0f, #0b1118);
}
/* 光斑：blur 一次性计算，仅 transform 漂移（合成层，便宜） */
.bg-orbs { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(50px); opacity: .5; will-change: transform; }
.orb-1 { width: 380px; height: 380px; background: var(--g); top: -80px; left: -60px; animation: drift1 20s ease-in-out infinite; }
.orb-2 { width: 320px; height: 320px; background: #1d8fb0; bottom: -90px; right: -40px; animation: drift2 26s ease-in-out infinite; }
@keyframes drift1 { 0%,100% { transform: translate3d(0,0,0); } 50% { transform: translate3d(40px,30px,0); } }
@keyframes drift2 { 0%,100% { transform: translate3d(0,0,0); } 50% { transform: translate3d(-30px,-40px,0); } }

/* 毛玻璃：标准支持时启用，否则退化为实色（避免无谓开销） */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px) saturate(130%);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.4);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: rgba(13, 20, 26, 0.92); }
}

/* 导航：滚动后降级为实色，避免毛玻璃随滚动持续重算 */
.navbar {
  position: sticky; top: 14px; z-index: 60;
  margin: 0 16px; max-width: var(--max); border-radius: 999px;
  transition: background .25s ease, box-shadow .25s ease;
}
.navbar.scrolled { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(9, 13, 18, 0.94); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 10px 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; }
.brand-logo {
  width: 34px; height: 34px; border-radius: 10px; display: block; object-fit: contain;
  image-rendering: pixelated;
  background: linear-gradient(135deg, var(--g), var(--g2));
  padding: 3px;
}
.brand-text b { color: var(--g); }
.hero-logo {
  width: 64px; height: 64px; border-radius: 14px; object-fit: contain; image-rendering: pixelated;
  background: linear-gradient(135deg, var(--g), var(--g2)); padding: 6px; margin-bottom: 14px;
  box-shadow: 0 8px 22px rgba(0,0,0,.38);
  animation: pop .5s ease both;
}
.disc-logo {
  width: 52px; height: 52px; border-radius: 12px; object-fit: contain; image-rendering: pixelated;
  background: linear-gradient(135deg, var(--g), var(--g2)); padding: 5px; margin: 0 auto 14px auto;
}
.disclaimer.open .disc-logo { animation: pop .4s ease both; }
@keyframes pop { from { opacity: 0; transform: scale(.82) translateY(6px); } to { opacity: 1; transform: none; } }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; }
.nav-links a { padding: 8px 14px; border-radius: 999px; font-size: 15px; color: var(--ink-soft); transition: background .2s, color .2s; }
.nav-links a:hover { color: var(--ink); background: rgba(255,255,255,.06); }
.nav-cta { background: linear-gradient(135deg, var(--g), var(--g2)); color: #07140d !important; font-weight: 700; }
.nav-cta:hover { filter: brightness(1.08); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: transform .2s, filter .2s;
}
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-primary { background: linear-gradient(135deg, var(--g), var(--g2)); color: #07140d; box-shadow: 0 10px 28px rgba(34,197,94,.3); }
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.07); }
.btn-ghost { color: var(--ink); }
.btn-ghost:hover { background: rgba(255,255,255,.12) !important; }

/* Hero */
.hero {
  position: relative; z-index: 1; max-width: var(--max); margin: 0 auto;
  padding: 80px 20px 50px;
  display: grid; grid-template-columns: 1.02fr .98fr; gap: 46px; align-items: start;
}
.badge { display: inline-block; padding: 7px 16px; border-radius: 999px; font-size: 13px; color: var(--g); margin-bottom: 20px; }
.hero-title, .hero h1 { font-size: clamp(32px, 5vw, 56px); line-height: 1.1; font-weight: 800; letter-spacing: -.5px; }
.hero h1 .accent { background: linear-gradient(135deg, var(--g), #5eead4); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin: 22px 0 30px; color: var(--ink-soft); font-size: 17px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 44px; }
.stat b { display: block; font-size: 30px; font-weight: 800; color: var(--g); }
.stat span { font-size: 13px; color: var(--ink-soft); }

/* 产品主面板（还原截图） */
.hero-panel { border-radius: var(--radius); overflow: hidden; }
.panel-search { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--glass-border); color: var(--ink-soft); }
.panel-search .ic { width: 18px; height: 18px; }
.panel-search input { flex: 1; background: none; border: 0; outline: none; color: var(--ink); font-size: 14px; }
.panel-body { display: grid; grid-template-columns: 132px 1fr; min-height: 300px; }
.sys-menu { list-style: none; border-right: 1px solid var(--glass-border); padding: 14px 10px; display: flex; flex-direction: column; gap: 6px; }
.sys-menu li { display: flex; align-items: center; gap: 9px; padding: 9px 10px; border-radius: 12px; font-size: 13px; color: var(--ink-soft); cursor: pointer; transition: background .2s, color .2s; }
.sys-menu li:hover { background: rgba(255,255,255,.05); color: var(--ink); }
.sys-menu li.active { background: linear-gradient(135deg, rgba(47,123,255,.32), rgba(47,123,255,.12)); color: #fff; }
.sys-ico { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: rgba(34,197,94,.16); color: var(--g); flex: 0 0 auto; }
.sys-menu li.active .sys-ico { background: rgba(255,255,255,.18); color: #fff; }
.sys-content { padding: 18px; display: flex; flex-direction: column; gap: 12px; }
.sys-content h3 { font-size: 19px; }
.sys-content p { font-size: 14px; color: var(--ink-soft); }
.sys-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sys-tags span { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: rgba(34,197,94,.14); color: var(--g); }
.sys-card { margin-top: auto; min-height: 110px; border-radius: 14px; background-size: cover; background-position: center; position: relative; display: flex; align-items: flex-end; }
.sys-card span { width: 100%; padding: 10px 12px; font-size: 13px; border-radius: 0 0 14px 14px; background: linear-gradient(0deg, rgba(0,0,0,.7), transparent); }

/* 实时功能标签云 */
.hero-feats { grid-column: 1 / -1; border-radius: var(--radius); padding: 16px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.feat { font-size: 13px; padding: 8px 14px; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid var(--glass-border); color: var(--ink-soft); display: inline-flex; align-items: center; gap: 6px; }
.feat i { font-style: normal; font-size: 11px; padding: 2px 7px; border-radius: 999px; background: rgba(34,197,94,.2); color: var(--g); }
.feat:last-child { margin-right: auto; }

/* 通用区块 */
.section { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 76px 20px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.eyebrow { color: var(--g); font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.eyebrow.light { color: #7dd3fc; }
.section-head h2 { font-size: clamp(26px, 4vw, 40px); margin: 12px 0 14px; font-weight: 800; }
.section-head p { color: var(--ink-soft); font-size: 16px; }

/* 系统卡片 */
.cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.card { padding: 24px; border-radius: var(--radius); cursor: pointer; transition: transform .25s, border-color .25s; }
.card:hover { transform: translateY(-6px); border-color: rgba(34,197,94,.5); }
.card-ico { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: rgba(34,197,94,.14); color: var(--g); margin-bottom: 14px; }
.card-ico .ic { width: 24px; height: 24px; }
.card h3 { font-size: 17px; margin-bottom: 6px; }
.card p { color: var(--ink-soft); font-size: 14px; }

/* 截图展示 */
.showcase-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.shot { border-radius: var(--radius); overflow: hidden; padding: 0; cursor: zoom-in; transition: transform .25s; }
.shot:hover { transform: translateY(-4px); }
.shot img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; background: #0c1217; }
.shot figcaption { padding: 12px 16px; font-size: 14px; color: var(--ink-soft); border-top: 1px solid var(--glass-border); }

/* 特色宣传区：红→紫渐变 + transform 浮动 */
.promo { overflow: hidden; }
.promo-inner {
  border-radius: 28px; padding: 44px;
  background: linear-gradient(155deg, #7a1224 0%, #1a0710 46%, #1b0b2e 100%);
  border: 1px solid rgba(255,255,255,.08);
  display: grid; grid-template-columns: 56px 1.1fr 1fr; gap: 30px; align-items: center;
  animation: floaty 9s ease-in-out infinite;
}
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.promo-rail { display: flex; flex-direction: column; gap: 14px; align-items: center; }
.rail-ico { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.08); color: var(--g); }
.rail-ico .ic { width: 20px; height: 20px; }
.promo-title { font-size: clamp(28px, 4.5vw, 48px); font-weight: 800; line-height: 1.05; }
.grad { background: linear-gradient(135deg, #f87171, #c084fc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.promo-lead { color: #cbd5e1; margin: 14px 0 18px; font-size: 16px; }
.promo-points { list-style: none; display: flex; flex-direction: column; gap: 10px; color: #e2e8f0; font-size: 15px; }
.promo-points .hl { color: #7dd3fc; }
.promo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.pg { display: flex; align-items: center; gap: 10px; padding: 14px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); font-size: 14px; }
.pg-ico { font-size: 20px; }

/* 下载 */
.download-card { border-radius: var(--radius); padding: 42px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; }
.download-card h2 { font-size: clamp(24px, 3.5vw, 34px); margin: 10px 0 12px; font-weight: 800; }
.download-card p { color: var(--ink-soft); margin-bottom: 18px; }
.dl-meta { list-style: none; display: flex; gap: 26px; }
.dl-meta li { display: flex; flex-direction: column; }
.dl-meta span { font-size: 12px; color: var(--ink-soft); }
.dl-meta b { font-size: 18px; color: var(--g); }
.dl-right { display: flex; flex-direction: column; gap: 14px; }

/* 社区 */
.community-card { border-radius: var(--radius); padding: 34px; display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 720px; margin: 0 auto; }
.qq { display: flex; align-items: center; gap: 18px; }
.qq-ico { font-size: 32px; width: 62px; height: 62px; display: grid; place-items: center; border-radius: 18px; background: rgba(34,197,94,.14); }
.qq h3 { font-size: 18px; }
.qq-num { font-size: 24px; font-weight: 800; color: var(--g); letter-spacing: 1px; }
.official-link { text-align: center; margin-top: 22px; color: var(--ink-soft); font-size: 15px; }
.official-link a { color: var(--g); }

/* 页脚 */
.footer { border-top: 1px solid var(--glass-border); margin-top: 36px; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 32px 20px; display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--ink-soft); font-size: 14px; transition: color .2s; }
.footer-links a:hover { color: var(--g); }
.copyright { color: var(--ink-soft); font-size: 13px; }

/* 灯箱 */
.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.86); display: none; place-items: center; padding: 24px; }
.lightbox.open { display: grid; }
.lightbox img { max-width: 92vw; max-height: 86vh; border-radius: 14px; box-shadow: 0 20px 60px rgba(0,0,0,.6); }
.lb-close { position: absolute; top: 20px; right: 26px; font-size: 34px; color: #fff; cursor: pointer; line-height: 1; }

/* 免责声明 */
.disclaimer { position: fixed; inset: 0; z-index: 110; background: rgba(0,0,0,.72); display: none; place-items: center; padding: 24px; opacity: 0; transition: opacity .18s ease; pointer-events: none; }
.disclaimer.open { display: grid; opacity: 1; pointer-events: auto; }
.disc-box { max-width: 480px; border-radius: 20px; padding: 30px; }
.disc-box h3 { font-size: 20px; margin-bottom: 14px; text-align: center; }
.disc-box p { color: var(--ink-soft); font-size: 15px; line-height: 1.75; }
.disc-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }
.disc-check { display: flex; align-items: center; gap: 10px; margin-top: 16px; font-size: 14px; cursor: pointer; }
.disc-check input { width: 18px; height: 18px; accent-color: var(--g); flex: 0 0 auto; }
.disc-check.disabled, .disc-check input:disabled { cursor: not-allowed; opacity: .55; }
.disc-timer { margin-top: 10px; font-size: 13px; color: var(--g); }
.btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }

/* 背景音乐按钮 */
.music-btn { position: fixed; right: 18px; bottom: 18px; z-index: 90; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; color: var(--g); }
.music-btn .disc { font-size: 22px; line-height: 1; display: block; }
.music-btn.playing .disc { animation: spin 4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 滚动揭示：仅 transform/opacity */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.show { opacity: 1; transform: none; }

/* 响应式 */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(3, 1fr); }
  .promo-inner { grid-template-columns: 1fr; }
  .promo-rail { flex-direction: row; justify-content: center; }
  .download-card { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-links {
    position: absolute; top: 70px; left: 16px; right: 16px; flex-direction: column; align-items: stretch; gap: 6px;
    padding: 16px; border-radius: var(--radius); background: rgba(9,13,18,.96);
    border: 1px solid var(--glass-border);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .3s;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; }
  .nav-toggle { display: flex; }
  .cards { grid-template-columns: 1fr 1fr; }
  .panel-body { grid-template-columns: 110px 1fr; }
  .promo-inner { padding: 28px; }
  .community-card { flex-direction: column; text-align: center; }
}

/* 性能保底：用户系统要求减少动效时，关闭持续动画 */
@media (prefers-reduced-motion: reduce) {
  .orb, .promo-inner, .music-btn.playing .disc, .hero-logo, .disclaimer.open .disc-logo { animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}