:root {
  --bg:#07111f;
  --panel:#0d1d32;
  --panel-soft:#12263f;
  --text:#ecf6ff;
  --muted:#9eb1c8;
  --teal:#14d7d1;
  --coral:#ff5477;
  --gold:#ffd166;
  --line:rgba(255,255,255,.12);
  --shadow:0 30px 80px rgba(0,0,0,.28);
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:92px; }
body { margin:0; color:var(--text); background:var(--bg); font-family:"Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif; line-height:1.7; overflow-x:hidden; }
a { color:inherit; text-decoration:none; }
button { font:inherit; }
img { max-width:100%; display:block; }
p,h1,h2,h3 { margin:0; }
button,a,summary { -webkit-tap-highlight-color:transparent; }
a:focus-visible,button:focus-visible,summary:focus-visible { outline:3px solid var(--gold); outline-offset:4px; }
.skip-link { position:fixed; left:16px; top:-80px; z-index:100; padding:10px 14px; border-radius:10px; background:#fff; color:#07111f; }
.skip-link:focus { top:14px; }
.topbar { position:fixed; inset:0 0 auto; z-index:50; height:78px; display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:20px; padding:0 max(5vw,28px); border-bottom:1px solid var(--line); background:rgba(7,17,31,.78); backdrop-filter:blur(18px); }
.brand { display:flex; align-items:center; gap:11px; width:max-content; font-weight:900; letter-spacing:.03em; }
.brand img { width:44px; height:44px; border-radius:13px; object-fit:cover; box-shadow:0 12px 24px rgba(0,0,0,.18); }
.brand span { font-size:20px; }
.brand small { padding:2px 8px; border:1px solid rgba(20,215,209,.38); border-radius:999px; color:var(--teal); font-size:11px; font-weight:700; }
.nav { display:flex; align-items:center; gap:32px; color:#bfd0e2; font-size:14px; }
.nav a { transition:color .2s ease; }
.nav a:hover { color:#fff; }
.top-download { justify-self:end; display:inline-flex; align-items:center; justify-content:center; min-height:42px; padding:0 18px; border-radius:999px; background:linear-gradient(135deg,var(--teal),#69f0dd); color:#06111d; font-weight:900; box-shadow:0 14px 32px rgba(20,215,209,.2); }
.menu { display:none; justify-self:end; width:42px; height:42px; border:0; border-radius:14px; background:rgba(255,255,255,.08); color:#fff; font-size:24px; cursor:pointer; }
.hero { position:relative; min-height:820px; display:grid; grid-template-columns:minmax(0,1fr) minmax(350px,520px); grid-template-rows:auto 1fr auto; gap:42px 7vw; padding:130px max(6vw,34px) 46px; overflow:hidden; }
.hero-bg { position:absolute; inset:0; background:radial-gradient(circle at 18% 25%,rgba(255,84,119,.2),transparent 32%),radial-gradient(circle at 74% 18%,rgba(20,215,209,.2),transparent 34%),linear-gradient(135deg,#07111f 0%,#0b1d34 52%,#102c42 100%); }
.hero-bg::before { content:""; position:absolute; inset:0; opacity:.12; background-image:linear-gradient(rgba(255,255,255,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.1) 1px,transparent 1px); background-size:54px 54px; mask-image:linear-gradient(to bottom,#000,transparent 90%); }
.hero-copy,.hero-panel,.hero-stats { position:relative; z-index:2; }
.notice { position:relative; z-index:3; grid-column:1/-1; grid-row:1; display:flex; flex-wrap:wrap; align-items:center; gap:12px 18px; margin:0; padding:18px 22px; border:1px solid rgba(255,209,102,.45); border-left:6px solid var(--gold); border-radius:20px; background:linear-gradient(120deg,rgba(255,209,102,.16),rgba(255,84,119,.12)); box-shadow:0 18px 44px rgba(0,0,0,.26); }
.notice-tag { flex:0 0 auto; padding:7px 14px; border-radius:999px; background:var(--gold); color:#402d00; font-size:13px; font-weight:900; letter-spacing:.02em; }
.notice-main { flex:1 1 420px; min-width:0; color:#fdf1d8; font-size:15px; }
.notice-main strong { color:#fff; }
.notice-gift { flex:1 1 260px; color:var(--gold); font-size:17px; font-weight:900; }
.notice-copy { display:inline-flex; align-items:center; gap:9px; min-height:46px; padding:9px 14px; border:1px solid rgba(255,255,255,.3); border-radius:13px; background:rgba(255,255,255,.1); color:#fff; cursor:pointer; transition:border-color .2s ease,background .2s ease; }
.notice-copy:hover { border-color:var(--gold); background:rgba(255,209,102,.16); }
.notice-copy strong { user-select:all; -webkit-user-select:all; }
.notice-copy span { padding:4px 9px; border-radius:999px; background:var(--gold); color:#402d00; font-size:12px; font-weight:900; white-space:nowrap; }
.notice-copy.copied { border-color:var(--gold); }
.notice-copy.copied span { background:#fff; }
.hero-copy { align-self:center; max-width:730px; }
.eyebrow { color:var(--teal); font-size:12px; font-weight:900; letter-spacing:.22em; text-transform:uppercase; }
.hero h1 { margin:18px 0 22px; font-size:clamp(48px,6.5vw,96px); line-height:.98; letter-spacing:-.06em; }
.hero h1 span { display:block; color:var(--gold); }
.lead { max-width:620px; color:#b7c7d9; font-size:clamp(17px,1.5vw,21px); }
.hero-actions { display:flex; flex-wrap:wrap; gap:14px; margin-top:32px; }
.btn { display:inline-flex; align-items:center; justify-content:center; min-height:56px; padding:0 24px; border-radius:16px; font-weight:900; transition:transform .2s ease,background .2s ease,border .2s ease; }
.btn:hover { transform:translateY(-2px); }
.primary { background:linear-gradient(135deg,var(--coral),#ff7d73); color:#fff; box-shadow:0 16px 34px rgba(255,84,119,.22); }
.ghost { border:1px solid rgba(255,255,255,.2); background:rgba(255,255,255,.06); color:#fff; }
.ghost:hover { border-color:rgba(20,215,209,.6); background:rgba(20,215,209,.1); }
.contact-strip { display:flex; flex-wrap:wrap; gap:10px; margin-top:18px; color:#ccd8e6; font-size:14px; }
.contact-chip { display:inline-flex; align-items:center; gap:9px; min-height:46px; padding:9px 12px; border:1px solid var(--line); border-radius:12px; background:rgba(255,255,255,.055); color:#ccd8e6; cursor:pointer; transition:border-color .2s ease,background .2s ease; }
.contact-chip:hover { border-color:rgba(20,215,209,.6); background:rgba(20,215,209,.12); }
.contact-chip strong { color:#fff; letter-spacing:.03em; user-select:all; -webkit-user-select:all; }
.contact-chip span { padding:4px 9px; border-radius:999px; background:rgba(20,215,209,.16); color:var(--teal); font-size:12px; font-weight:900; white-space:nowrap; }
.contact-chip.copied { border-color:var(--teal); }
.contact-chip.copied span { background:var(--teal); color:#04212a; }
.hero-panel { align-self:center; margin:0; padding:22px; border:1px solid var(--line); border-radius:34px; background:linear-gradient(180deg,rgba(255,255,255,.13),rgba(255,255,255,.04)); box-shadow:var(--shadow); backdrop-filter:blur(22px); }
.panel-head { display:flex; align-items:center; gap:12px; }
.panel-head img { width:52px; height:52px; border-radius:15px; object-fit:cover; }
.panel-head div { display:grid; line-height:1.25; }
.panel-head strong { font-size:20px; }
.panel-head small { color:var(--muted); }
.panel-head b { margin-left:auto; padding:4px 9px; border-radius:999px; background:rgba(255,84,119,.16); color:#ff97a9; font-size:11px; letter-spacing:.12em; }
.phone-preview { margin-top:20px; padding:12px; border-radius:38px; background:linear-gradient(145deg,#0d1727,#48586c); box-shadow:0 26px 60px rgba(0,0,0,.3); }
.phone-screen { border-radius:28px; background:#f2f5f9; overflow:hidden; }
.phone-screen img { width:100%; height:520px; object-fit:cover; object-position:top; }
.hero-panel figcaption { margin-top:13px; color:var(--muted); font-size:12px; text-align:center; }
.hero-stats { grid-column:1/-1; display:grid; grid-template-columns:repeat(3,1fr); gap:16px; padding-top:32px; border-top:1px solid var(--line); }
.hero-stats div { min-height:92px; padding:20px; border:1px solid var(--line); border-radius:22px; background:rgba(255,255,255,.045); }
.hero-stats strong { display:block; color:var(--teal); font-size:28px; line-height:1.1; }
.hero-stats span { color:var(--muted); font-size:13px; }
.data-section,.faq-section { padding:110px max(6vw,32px); background:#f5f8fc; color:#152234; }
.section-title { max-width:820px; margin:0 auto 44px; text-align:center; }
.section-title .eyebrow { color:#008d8a; }
.section-title h2,.install-section h2,.service-copy h2 { margin:9px 0 12px; font-size:clamp(32px,4.2vw,58px); line-height:1.16; letter-spacing:-.045em; }
.section-title p:not(.eyebrow),.service-copy p { color:#65768a; }
.data-grid { display:grid; grid-template-columns:repeat(4,1fr); max-width:1240px; margin:auto; gap:18px; }
.data-grid article { min-height:250px; padding:28px; border:1px solid #dfe7f0; border-radius:28px; background:#fff; box-shadow:0 18px 42px rgba(21,34,52,.06); transition:transform .2s ease,box-shadow .2s ease; }
.data-grid article:hover { transform:translateY(-5px); box-shadow:0 24px 54px rgba(21,34,52,.1); }
.data-grid span { color:#00a8a0; font:800 13px/1 monospace; }
.data-grid h3 { margin:34px 0 12px; font-size:24px; }
.data-grid p { color:#66788d; font-size:15px; }
.shots-section { padding:110px max(6vw,32px); background:linear-gradient(180deg,#0a1728,#0d2233); }
.shots-section .section-title .eyebrow { color:var(--gold); }
.shots-section .section-title p:not(.eyebrow) { color:#9fb1c6; }
.shots-grid { display:grid; grid-template-columns:repeat(2,1fr); max-width:820px; margin:auto; gap:28px; }
.shots-grid figure { margin:0; padding:12px; border:1px solid var(--line); border-radius:30px; background:rgba(255,255,255,.06); box-shadow:var(--shadow); }
.shots-grid img { width:100%; height:520px; border-radius:22px; object-fit:cover; object-position:top; background:#fff; }
.shots-grid figcaption { display:flex; align-items:center; gap:10px; padding:14px 8px 4px; font-weight:900; }
.shots-grid figcaption span { color:var(--teal); font:800 12px/1 monospace; }
.preview-points { display:flex; flex-wrap:wrap; justify-content:center; gap:10px; margin-top:22px; }
.preview-points span { padding:9px 15px; border:1px solid rgba(255,255,255,.18); border-radius:999px; background:rgba(255,255,255,.06); color:#d8e4f0; font-size:14px; font-weight:700; }
.install-section { display:grid; grid-template-columns:.85fr 1.15fr; gap:7vw; align-items:center; padding:110px max(7vw,40px); background:#0b1829; }
.install-section .eyebrow { color:var(--gold); }
.steps { list-style:none; margin:0; padding:0; display:grid; gap:16px; }
.steps li { display:grid; grid-template-columns:52px 1fr; gap:18px; padding:22px; border:1px solid var(--line); border-radius:22px; background:rgba(255,255,255,.05); }
.steps span { grid-row:1/3; display:grid; place-items:center; width:52px; height:52px; border-radius:16px; background:rgba(20,215,209,.15); color:var(--teal); font-weight:900; }
.steps strong { font-size:20px; }
.steps p { grid-column:2; color:#99abc0; font-size:15px; }
.wide { grid-column:2; width:max-content; margin-top:8px; }
.service-section { padding:110px max(6vw,32px); background:linear-gradient(135deg,#07111f,#0d2634); }
.service-card { max-width:1180px; margin:auto; display:grid; grid-template-columns:1fr auto; align-items:center; gap:36px; padding:42px; border:1px solid var(--line); border-radius:32px; background:rgba(255,255,255,.06); box-shadow:var(--shadow); }
.service-copy p:not(.eyebrow) { color:#a1b2c5; max-width:610px; }
.service-actions { display:grid; gap:14px; min-width:280px; }
.copy-card { display:grid; grid-template-columns:1fr auto; gap:4px 16px; min-height:82px; padding:15px 18px; border:1px solid var(--line); border-radius:18px; background:#fff; color:#07111f; text-align:left; cursor:pointer; }
.copy-card:hover { border-color:#00a8a0; }
.copy-card.copied { border-color:#00a8a0; box-shadow:0 0 0 2px rgba(0,168,160,.2); }
.copy-card small { color:#718197; }
.copy-card strong { font-size:22px; user-select:all; -webkit-user-select:all; }
.copy-card span { grid-row:1/3; grid-column:2; align-self:center; color:#008d8a; font-size:13px; font-weight:900; }
.copy-status:empty { display:none; }
.copy-status { position:fixed; z-index:80; left:50%; bottom:96px; transform:translateX(-50%); width:max-content; max-width:calc(100% - 28px); padding:12px 18px; border-radius:14px; background:#fff; color:#07111f; box-shadow:0 18px 48px rgba(0,0,0,.22); font-weight:800; }
.compact { margin-bottom:24px; }
.faq-list { max-width:980px; margin:auto; border-top:1px solid #dbe4ee; }
.faq-list details { border-bottom:1px solid #dbe4ee; }
.faq-list summary { list-style:none; display:flex; align-items:center; justify-content:space-between; gap:20px; padding:22px 0; cursor:pointer; font-size:18px; font-weight:900; }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary span { color:#00a8a0; font-size:26px; transition:transform .2s ease; }
.faq-list details[open] summary span { transform:rotate(45deg); }
.faq-list p { max-width:760px; margin:-6px 0 24px; color:#65768a; }
.footer { display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:22px 50px; padding:42px max(6vw,32px); background:#050b14; color:#93a4b7; font-size:13px; }
.footer-brand { display:flex; align-items:center; gap:10px; color:#fff; }
.footer-brand img { width:38px; height:38px; border-radius:11px; object-fit:cover; }
.footer nav { display:flex; gap:18px; justify-self:end; color:#ccd8e6; }
.footer small { grid-column:1/-1; padding-top:18px; border-top:1px solid var(--line); }
@media (max-width:1040px) {
  .topbar { grid-template-columns:1fr auto; }
  .nav { display:none; position:absolute; top:78px; left:18px; right:18px; flex-direction:column; align-items:stretch; gap:0; padding:10px; border:1px solid var(--line); border-radius:20px; background:#0b1829; box-shadow:var(--shadow); }
  .nav.nav-open { display:flex; }
  .nav a { padding:13px 14px; }
  .top-download { display:none; }
  .menu { display:block; }
  .hero { grid-template-columns:1fr; min-height:auto; }
  .hero-panel { max-width:540px; width:100%; }
  .data-grid { grid-template-columns:repeat(2,1fr); }
  .shots-grid { gap:16px; }
  .shots-grid img { height:420px; }
  .install-section,.service-card { grid-template-columns:1fr; }
  .wide { grid-column:auto; }
  .footer { grid-template-columns:1fr; }
  .footer nav { justify-self:start; }
}
@media (max-width:680px) {
  html { scroll-padding-top:68px; }
  .topbar { height:66px; padding:0 14px; }
  .brand img { width:38px; height:38px; }
  .brand span { font-size:18px; }
  .brand small { display:none; }
  .nav { top:66px; left:12px; right:12px; }
  .hero { padding:100px 18px 34px; gap:28px; }
  .notice { padding:15px 16px; border-radius:16px; gap:10px 12px; }
  .notice-main { flex:1 1 100%; font-size:14px; }
  .notice-gift { flex:1 1 100%; font-size:15px; }
  .notice-copy { width:100%; justify-content:space-between; }
  .hero h1 { font-size:clamp(42px,14vw,58px); }
  .lead { font-size:16px; }
  .hero-actions { flex-direction:column; }
  .btn { width:100%; min-height:54px; }
  .contact-strip { display:grid; }
  .contact-chip { justify-content:space-between; min-height:50px; }
  .hero-panel { padding:16px; border-radius:26px; }
  .hero-stats { grid-template-columns:1fr; gap:10px; padding-top:22px; }
  .hero-stats div { min-height:auto; padding:16px; }
  .data-section,.faq-section,.service-section { padding:64px 18px; }
  .section-title { text-align:left; margin-bottom:28px; }
  .data-grid { grid-template-columns:1fr; gap:14px; }
  .shots-section { padding:64px 18px; }
  .shots-grid { grid-template-columns:1fr; gap:16px; }
  .shots-grid figure { padding:10px; border-radius:24px; }
  .shots-grid img { height:auto; max-height:520px; border-radius:18px; }
  .data-grid article { min-height:auto; padding:24px; }
  .data-grid h3 { margin-top:18px; }
  .install-section { padding:64px 18px; gap:32px; }
  .preview-points { justify-content:flex-start; gap:8px; margin-top:18px; }
  .preview-points span { padding:8px 13px; font-size:13px; }
  .phone-preview { padding:11px; border-radius:34px; }
  .phone-screen { border-radius:26px; }
  .phone-screen img { height:460px; }
  .steps li { grid-template-columns:44px 1fr; gap:14px; padding:18px; }
  .steps span { width:44px; height:44px; }
  .service-card { padding:26px 18px; border-radius:24px; }
  .service-actions { min-width:0; }
  .copy-card { grid-template-columns:1fr; }
  .copy-card span { grid-column:auto; grid-row:auto; }
}
@media (max-width:390px) {
  .topbar { padding-inline:12px; }
  .hero { padding-inline:15px; }
  .phone-screen img { height:420px; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { transition-duration:.01ms!important; }
}