:root {
  color-scheme: light;
  --bg: #f7f9fb;
  --surface: #ffffff;
  --surface-low: #f2f5f8;
  --surface-mid: #e8edf3;
  --ink: #111827;
  --muted: #5d6b7c;
  --faint: #8a96a6;
  --line: #dce3eb;
  --line-strong: #c4cfdd;
  --primary: #0057d8;
  --primary-strong: #003f9e;
  --primary-soft: #e7f0ff;
  --success: #05a660;
  --shadow: 0 24px 70px rgba(33, 52, 72, 0.16);
  --soft-shadow: 0 10px 32px rgba(33, 52, 72, 0.08);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 16px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
p, h1, h2, h3 { margin: 0; }

.site-header {
  position: sticky; top: 0; z-index: 20; height: 68px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 0 clamp(20px, 4vw, 56px);
  border-bottom: 1px solid rgba(220, 227, 235, 0.8);
  background: rgba(255, 255, 255, 0.86); backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; white-space: nowrap; }
.brand img { width: 32px; height: 32px; border-radius: 7px; box-shadow: 0 6px 18px rgba(0, 87, 216, 0.18); }
nav { display: flex; align-items: center; justify-content: center; gap: 28px; color: var(--muted); font-size: 14px; font-weight: 700; }
nav a:hover { color: var(--primary); }
nav .nav-product { color: var(--primary); }
.nav-cta { min-height: 42px; display: inline-flex; align-items: center; justify-content: center; padding: 0 18px; border-radius: 6px; background: var(--primary); color: #fff; font-size: 14px; font-weight: 800; box-shadow: 0 10px 26px rgba(0, 87, 216, 0.18); }
.mobile-product-nav { display: none; }

.hero {
  position: relative; min-height: calc(100vh - 68px);
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(520px, 1.1fr);
  gap: clamp(42px, 6vw, 86px); align-items: center;
  padding: clamp(64px, 8vw, 110px) clamp(20px, 4vw, 56px) 72px;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 24%, rgba(0, 87, 216, 0.14), transparent 34%),
    radial-gradient(circle at 82% 74%, rgba(5, 166, 96, 0.16), transparent 30%),
    linear-gradient(180deg, #fff 0%, #f7f9fb 62%, #edf2f7 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: 0.55; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.42), transparent 78%);
}
.hero-copy, .product-shell { position: relative; z-index: 1; }
.hero-copy { display: grid; gap: 22px; max-width: 660px; justify-self: end; }
.release { width: fit-content; display: inline-flex; align-items: center; gap: 8px; padding: 7px 10px; border: 1px solid rgba(0,87,216,.18); border-radius: 6px; background: var(--primary-soft); color: var(--primary); font-size: 12px; font-weight: 900; }
.release i, .floating-status i { width: 8px; height: 8px; border-radius: 999px; background: var(--primary); }
.hero h1 { max-width: 680px; font-size: clamp(44px, 6vw, 78px); line-height: 1.02; letter-spacing: 0; }
.lead { color: var(--muted); font-size: clamp(17px, 1.7vw, 21px); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 20px; border-radius: 6px; font-weight: 900; transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease; }
.btn:hover { transform: translateY(-2px); }
.btn.primary { border: 1px solid var(--primary); background: var(--primary); color: #fff; box-shadow: 0 16px 34px rgba(0,87,216,.2); }
.btn.primary:hover { background: var(--primary-strong); }
.btn.secondary { border: 1px solid var(--line-strong); background: rgba(255,255,255,.82); color: var(--ink); }
.compat { display: flex; flex-wrap: wrap; gap: 10px; color: var(--muted); }
.compat span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: rgba(255,255,255,.76); font-size: 13px; font-weight: 800; }

.product-shell::before { content: ""; position: absolute; width: 54%; aspect-ratio: 1; right: 6%; bottom: -12%; border-radius: 999px; background: rgba(5,166,96,.18); filter: blur(44px); }
.app-window { position: relative; border: 1px solid rgba(195,207,221,.86); border-radius: 10px; background: rgba(255,255,255,.78); box-shadow: var(--shadow); backdrop-filter: blur(14px); overflow: hidden; }
.chrome { height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 0 14px; border-bottom: 1px solid var(--line); background: rgba(242,245,248,.88); }
.chrome div { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; font-weight: 800; }
.chrome img { width: 20px; height: 20px; border-radius: 5px; }
.chrome span { display: flex; gap: 7px; }
.chrome i { width: 9px; height: 9px; border-radius: 999px; background: #c7d0dc; }
.cockpit { min-height: 460px; display: grid; grid-template-columns: 174px minmax(0,1fr) 124px; gap: 12px; padding: 12px; background: linear-gradient(135deg, #fff, #f3f6fa); }
.side-panel, .main-panel, .metric-panel article, .floating-status, .line { border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.82); box-shadow: var(--soft-shadow); }
.side-panel { display: grid; align-content: start; gap: 12px; padding: 12px; }
.side-panel section { display: grid; gap: 9px; }
.side-panel b, .panel-head b { color: var(--ink); font-size: 13px; }
.side-panel p { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; }
.side-panel p i { width: 8px; height: 8px; border-radius: 999px; background: #a9b5c2; }
.side-panel p i.online { background: var(--success); box-shadow: 0 0 0 4px rgba(5,166,96,.12); }
.language-card { display: grid; gap: 8px; }
.language-card span { padding: 7px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-low); font-size: 12px; font-weight: 800; }
.language-card strong { color: var(--primary); }
.main-panel { display: grid; gap: 12px; padding: 14px; }
.panel-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.panel-head small { display: block; color: var(--primary); font-family: Consolas, monospace; font-size: 11px; font-weight: 900; }
.panel-head span { color: var(--faint); font-family: Consolas, monospace; font-size: 12px; }
.wave { height: 130px; display: flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid rgba(0,87,216,.18); border-radius: 8px; background: linear-gradient(180deg, rgba(0,87,216,.06), rgba(5,166,96,.05)), #f8fbff; }
.wave i { width: 8px; height: 36px; border-radius: 999px; background: var(--primary); opacity: .76; animation: wave 1.8s ease-in-out infinite; }
.wave i:nth-child(2n) { height: 68px; animation-delay: -.4s; }
.wave i:nth-child(3n) { height: 94px; animation-delay: -.8s; background: #0aa7ff; }
.demo-video-card { position: relative; height: 260px; border: 1px solid rgba(0,87,216,.18); border-radius: 8px; background: #f8fbff; overflow: hidden; box-shadow: inset 0 0 0 1px rgba(255,255,255,.7); }
.demo-video-card video { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; filter: saturate(1.04) contrast(1.02); }
.demo-video-card::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.24)); }
.demo-video-card span { position: absolute; left: 12px; bottom: 12px; z-index: 1; display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; border: 1px solid rgba(0,87,216,.16); border-radius: 6px; background: rgba(255,255,255,.86); color: var(--ink); font-family: Consolas, monospace; font-size: 11px; font-weight: 900; box-shadow: var(--soft-shadow); }
.demo-video-card span i { width: 7px; height: 7px; border-radius: 999px; background: var(--success); box-shadow: 0 0 0 4px rgba(5,166,96,.12); }
.line { display: grid; gap: 6px; padding: 12px; }
.line.blue { border-left: 4px solid var(--primary); }
.line.green { border-left: 4px solid var(--success); }
.line em { color: var(--faint); font-style: normal; font-family: Consolas, monospace; font-size: 11px; font-weight: 900; }
.line p { color: var(--muted); font-size: 14px; }
.line strong { color: var(--ink); font-size: 16px; }
.metric-panel { display: grid; align-content: start; gap: 12px; }
.metric-panel article { display: grid; gap: 4px; padding: 12px; }
.metric-panel span { color: var(--faint); font-size: 12px; }
.metric-panel b { color: var(--primary); font-size: 14px; }
.floating-status { position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%); display: flex; align-items: center; gap: 8px; padding: 12px 18px; font-family: Consolas, monospace; font-size: 12px; font-weight: 900; }
.floating-status i { background: var(--success); }

.platforms { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 26px; padding: 26px clamp(20px,4vw,56px); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; color: var(--muted); }
.platforms span { flex-basis: 100%; text-align: center; color: var(--faint); font-size: 13px; }
.platforms b { font-size: 14px; }
.section { padding: 88px clamp(20px,4vw,56px); }
.heading { width: min(760px,100%); margin: 0 auto 34px; text-align: center; }
.heading p, .kicker { margin-bottom: 8px; color: var(--primary); font-family: Consolas, monospace; font-size: 12px; font-weight: 900; }
.heading h2, .install h2 { font-size: clamp(30px,4vw,48px); line-height: 1.12; letter-spacing: 0; }
.grid { width: min(1180px,100%); margin: 0 auto; display: grid; gap: 16px; }
.features { grid-template-columns: repeat(3,minmax(0,1fr)); }
.features article, .steps article, .scenarios article, .plans article, .faq-list details { border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: var(--soft-shadow); }
.features article, .steps article, .scenarios article { display: grid; gap: 12px; padding: 24px; }
.features span, .steps b { width: 34px; height: 30px; display: grid; place-items: center; border-radius: 6px; background: var(--primary-soft); color: var(--primary); font-family: Consolas, monospace; font-size: 13px; font-weight: 900; }
.features h3, .steps h3, .scenarios h3 { font-size: 21px; }
.features p, .steps p, .scenarios p, .faq-list p, .install p, .plans li, .install li span { color: var(--muted); }
.workflow, .pricing { background: linear-gradient(180deg,#f1f5f9,#f7f9fb); }
.steps { grid-template-columns: repeat(3,minmax(0,1fr)); }
.install { width: min(1180px,100%); margin: 0 auto; display: grid; grid-template-columns: minmax(0,.72fr) minmax(440px,1fr); gap: 48px; align-items: start; }
.install > div { display: grid; gap: 14px; }
.contact-install { width: fit-content; margin-top: 6px; }
.install ol { margin: 0; padding: 0; display: grid; gap: 10px; list-style: none; }
.install li { display: grid; grid-template-columns: 118px 1fr; gap: 18px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.install li strong { color: var(--primary); }
.scenarios { grid-template-columns: repeat(3,minmax(0,1fr)); }
.plans { grid-template-columns: repeat(2,minmax(0,420px)); justify-content: center; }
.plans article { display: grid; gap: 14px; padding: 28px; }
.plans p { color: var(--primary); font-weight: 900; }
.plans h3 { font-size: 54px; line-height: 1; }
.plans span { color: var(--faint); }
.plans ul { display: grid; gap: 8px; margin: 8px 0; padding-left: 20px; }
.plans .best { border-color: rgba(0,87,216,.32); background: linear-gradient(180deg,#fff,#edf5ff); }
.faq-list { width: min(900px,100%); margin: 0 auto; display: grid; gap: 12px; }
.faq-list details { padding: 19px 22px; }
.faq-list summary { cursor: pointer; color: var(--ink); font-weight: 900; }
.faq-list p { margin-top: 12px; }
footer { display: flex; justify-content: space-between; gap: 24px; padding: 34px clamp(20px,4vw,56px); border-top: 1px solid var(--line); background: #fff; color: var(--muted); }
footer strong { color: var(--ink); }
footer div:last-child { display: grid; gap: 6px; text-align: right; }
.site-footer-summary { max-width: 620px; }
.site-footer-meta { display: grid; justify-items: end; align-content: center; gap: 9px; text-align: right; }
.site-footer-meta nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 20px; color: var(--ink); font-size: 13px; font-weight: 800; }
.site-footer-meta a:hover { color: var(--primary); }
.site-footer-meta small { font-size: 12px; }
.floating-contact { display: none; }
.contact-modal[hidden] { display: none; }
.contact-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; }
.contact-backdrop { position: absolute; inset: 0; background: rgba(17, 24, 39, .42); backdrop-filter: blur(8px); }
.contact-dialog { position: relative; z-index: 1; width: min(390px, 100%); display: grid; gap: 14px; justify-items: center; padding: 28px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.96); box-shadow: var(--shadow); text-align: center; }
.contact-dialog h2 { font-size: 26px; line-height: 1.2; }
.contact-dialog img { width: min(240px, 78vw); height: auto; border-radius: 18px; box-shadow: var(--soft-shadow); }
.contact-dialog p:last-child { color: var(--muted); }
.contact-close { position: absolute; top: 12px; right: 12px; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-low); color: var(--ink); cursor: pointer; font-size: 22px; line-height: 1; }
@keyframes wave { 0%,100% { transform: scaleY(.55); } 50% { transform: scaleY(1); } }
@media (max-width: 1080px) {
  nav { display: none; }
  .mobile-product-nav { position: sticky; top: 68px; z-index: 19; display: flex; align-items: center; justify-content: center; gap: 4px; padding: 8px 14px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.94); backdrop-filter: blur(14px); }
  .mobile-product-nav a { min-height: 34px; display: inline-flex; align-items: center; justify-content: center; padding: 0 12px; border-radius: 5px; color: var(--muted); font-size: 12px; font-weight: 800; white-space: nowrap; }
  .mobile-product-nav a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); }
  .hero, .install { grid-template-columns: 1fr; }
  .product-shell { max-width: 780px; }
  .features, .scenarios { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 740px) {
  .site-header { height: auto; min-height: 66px; padding-top: 12px; padding-bottom: 12px; }
  .brand span { max-width: 178px; overflow: hidden; text-overflow: ellipsis; }
  .nav-cta { display: none; }
  .mobile-product-nav { top: 66px; justify-content: flex-start; overflow-x: auto; }
  .hero { min-height: auto; padding-top: 44px; }
  .actions .btn { width: 100%; }
  .cockpit { grid-template-columns: 1fr; min-height: auto; }
  .side-panel, .metric-panel { display: none; }
  .floating-status { position: static; transform: none; margin: 0 12px 12px; justify-content: center; }
  .features, .steps, .scenarios, .plans { grid-template-columns: 1fr; }
  .install { padding-left: 20px; padding-right: 20px; }
  .install li { grid-template-columns: 1fr; gap: 6px; }
  footer { display: grid; }
  footer div:last-child { text-align: left; }
  .site-footer-meta { justify-items: start; }
  .site-footer-meta nav { justify-content: flex-start; }
  .floating-contact { display: none; }
}