:root {
  --ink: #12291f;
  --muted: #597066;
  --paper: #f7faf5;
  --white: #fff;
  --leaf: #206a4b;
  --leaf-dark: #174c38;
  --lime: #d9f06a;
  --mint: #d9eee3;
  --line: #dbe5de;
  --warm: #f1e5d4;
  --shadow: 0 24px 70px rgba(24, 76, 56, .12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: 430px;
  z-index: -1;
  background: radial-gradient(circle at 78% 0%, rgba(217,240,106,.36), transparent 30%), radial-gradient(circle at 6% 8%, rgba(217,238,227,.8), transparent 34%);
}
a { color: inherit; }
img { max-width: 100%; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(780px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--ink); color: white; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 20; padding: 14px 0; background: rgba(247,250,245,.86); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(219,229,222,.7); }
.nav-wrap, .footer-grid, .footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: -.02em; text-decoration: none; font-size: 20px; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px 11px 11px 4px; background: var(--leaf); color: var(--lime); font-size: 19px; transform: rotate(-3deg); }
.brand small { color: var(--muted); font-weight: 500; font-size: 13px; margin-left: 2px; }
.site-nav { display: flex; align-items: center; gap: 5px; }
.site-nav a { padding: 9px 12px; border-radius: 10px; color: #3d554b; text-decoration: none; font-size: 14px; font-weight: 650; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--leaf-dark); background: var(--mint); }
.site-nav .nav-cta { color: white; background: var(--leaf); margin-left: 6px; }
.site-nav .nav-cta:hover { color: white; background: var(--leaf-dark); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: white; color: var(--ink); font-size: 20px; }

.hero { padding: 92px 0 74px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 72px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 20px; color: var(--leaf-dark); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--leaf); }
h1, h2, h3 { margin-top: 0; line-height: 1.13; letter-spacing: -.045em; }
h1 { margin-bottom: 24px; font-size: clamp(46px, 6.4vw, 78px); font-weight: 840; }
h1 em { color: var(--leaf); font-style: normal; }
.hero-copy { max-width: 610px; margin: 0 0 30px; color: var(--muted); font-size: clamp(18px, 2vw, 21px); }
.button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border: 1px solid var(--leaf); border-radius: 14px; background: var(--leaf); color: white; text-decoration: none; font-weight: 750; box-shadow: 0 8px 22px rgba(32,106,75,.18); }
.button:hover { background: var(--leaf-dark); border-color: var(--leaf-dark); transform: translateY(-1px); }
.button.secondary { color: var(--ink); background: transparent; border-color: #aabcb1; box-shadow: none; }
.button.secondary:hover { background: white; }
.hero-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }

.product-visual { position: relative; min-height: 510px; }
.orb { position: absolute; inset: 7% 2% 4% 8%; border-radius: 48% 52% 43% 57%; background: linear-gradient(145deg, #dcefa8, #badfca); transform: rotate(-5deg); }
.phone-card { position: absolute; width: 290px; min-height: 465px; top: 8px; left: 50%; transform: translateX(-50%) rotate(3deg); padding: 22px; border: 1px solid rgba(255,255,255,.8); border-radius: 38px; background: #fcfdfb; box-shadow: var(--shadow); }
.phone-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 50px; font-weight: 800; }
.status-dot { display: inline-block; width: 8px; height: 8px; margin-right: 6px; border-radius: 50%; background: #3cb371; box-shadow: 0 0 0 5px rgba(60,179,113,.12); }
.connect-ring { display: grid; place-items: center; width: 168px; height: 168px; margin: 0 auto 34px; border-radius: 50%; background: conic-gradient(var(--leaf) 0 80%, #e4eee8 80%); box-shadow: inset 0 0 0 13px #f9fcf9; }
.connect-ring::after { content: "已连接\A智能分流"; white-space: pre; display: grid; place-items: center; width: 126px; height: 126px; border-radius: 50%; background: white; text-align: center; font-weight: 780; line-height: 1.5; }
.phone-row { display: flex; justify-content: space-between; padding: 12px 2px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.phone-row strong { color: var(--ink); }
.float-card { position: absolute; padding: 15px 18px; border: 1px solid rgba(255,255,255,.9); border-radius: 18px; background: rgba(255,255,255,.9); box-shadow: 0 16px 40px rgba(24,76,56,.14); backdrop-filter: blur(10px); font-size: 14px; font-weight: 760; }
.float-card small { display: block; color: var(--muted); font-weight: 500; }
.float-one { top: 54px; right: 0; transform: rotate(-3deg); }
.float-two { left: 0; bottom: 66px; transform: rotate(2deg); }

.trust-strip { border-block: 1px solid var(--line); background: rgba(255,255,255,.55); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 24px; text-align: center; border-right: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; color: var(--ink); font-size: 17px; }

.section { padding: 104px 0; }
.section.tint { background: #eef5ef; }
.section.dark { color: white; background: var(--ink); }
.section-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head h2 { margin-bottom: 18px; font-size: clamp(34px, 4.8vw, 54px); }
.section-head p { color: var(--muted); font-size: 18px; }
.dark .section-head p, .dark .muted { color: #b9cbc2; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.8); box-shadow: 0 14px 50px rgba(24,76,56,.06); }
.card-icon { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 54px; border-radius: 15px; background: var(--mint); color: var(--leaf); font-size: 22px; font-weight: 900; }
.card h3 { margin-bottom: 12px; font-size: 23px; }
.card p { margin: 0; color: var(--muted); }
.service-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; max-width: 880px; margin: auto; }
.service-pill { padding: 13px 19px; border: 1px solid var(--line); border-radius: 999px; background: white; font-weight: 720; }
.service-note { max-width: 720px; margin: 30px auto 0; color: var(--muted); text-align: center; font-size: 14px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid #375146; border-radius: var(--radius); background: #375146; }
.step { padding: 34px; background: var(--ink); }
.step-num { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 44px; border-radius: 50%; background: var(--lime); color: var(--ink); font-weight: 850; }
.step p { color: #b9cbc2; }

.price-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 410px)); justify-content: center; gap: 22px; }
.price-card { position: relative; padding: 38px; border: 1px solid var(--line); border-radius: 28px; background: white; }
.price-card.featured { border: 2px solid var(--leaf); box-shadow: var(--shadow); }
.badge { position: absolute; top: 18px; right: 18px; padding: 6px 10px; border-radius: 99px; background: var(--lime); color: var(--ink); font-size: 12px; font-weight: 850; }
.price { margin: 28px 0 4px; font-size: 52px; line-height: 1; font-weight: 860; letter-spacing: -.06em; }
.price sup { font-size: 18px; vertical-align: top; }
.price-period { color: var(--muted); }
.check-list { display: grid; gap: 12px; margin: 28px 0; padding: 0; list-style: none; }
.check-list li::before { content: "✓"; margin-right: 10px; color: var(--leaf); font-weight: 900; }
.fineprint { color: var(--muted); font-size: 13px; }

.page-hero { padding: 74px 0 48px; text-align: center; }
.page-hero h1 { max-width: 880px; margin: 0 auto 20px; font-size: clamp(42px, 6vw, 68px); }
.page-hero p { max-width: 720px; margin: auto; color: var(--muted); font-size: 19px; }
.download-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 450px)); justify-content: center; gap: 20px; }
.download-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.platform { display: flex; align-items: center; gap: 16px; }
.platform-icon { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 16px; background: var(--mint); font-size: 26px; font-weight: 800; }
.availability { display: inline-block; margin: 20px 0; padding: 6px 10px; border-radius: 8px; color: var(--leaf-dark); background: var(--mint); font-size: 12px; font-weight: 800; }
.availability.soon { color: #69512c; background: var(--warm); }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 16px; background: white; }
summary { position: relative; padding: 20px 56px 20px 22px; cursor: pointer; font-weight: 760; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; top: 15px; right: 20px; color: var(--leaf); font-size: 26px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 22px 22px; color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact-card { display: block; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: white; text-decoration: none; }
.contact-card:hover { border-color: var(--leaf); transform: translateY(-2px); }
.contact-card span { display: block; color: var(--muted); font-size: 14px; }
.legal { padding: 60px 0 100px; }
.legal h1 { font-size: clamp(40px, 5vw, 62px); }
.legal h2 { margin: 48px 0 14px; font-size: 27px; }
.legal h3 { margin: 30px 0 8px; font-size: 20px; }
.legal p, .legal li { color: #40584e; }
.legal .updated { padding-bottom: 24px; border-bottom: 1px solid var(--line); color: var(--muted); }
.notice { padding: 18px 20px; border-left: 4px solid var(--leaf); border-radius: 0 12px 12px 0; background: var(--mint); }

.cta-band { padding: 70px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 42px; border-radius: 30px; background: var(--leaf); color: white; overflow: hidden; }
.cta-inner h2 { margin-bottom: 8px; font-size: clamp(30px, 4vw, 44px); }
.cta-inner p { margin: 0; color: #d5e5dd; }
.cta-inner .button { flex: 0 0 auto; color: var(--ink); background: var(--lime); border-color: var(--lime); box-shadow: none; }

.site-footer { padding: 64px 0 28px; color: #c6d5ce; background: #0c2118; }
.footer-grid { align-items: flex-start; }
.site-footer .brand { color: white; }
.footer-blurb { max-width: 360px; margin-top: 16px; color: #93aa9f; font-size: 14px; }
.footer-links { display: grid; grid-template-columns: repeat(3, auto); gap: 42px; }
.footer-links strong { display: block; margin-bottom: 10px; color: white; font-size: 13px; }
.footer-links a { display: block; margin: 7px 0; color: #a9bdb3; text-decoration: none; font-size: 13px; }
.footer-links a:hover { color: var(--lime); }
.footer-bottom { margin-top: 48px; padding-top: 22px; border-top: 1px solid #284036; color: #779087; font-size: 12px; }

@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 70px; left: 20px; right: 20px; padding: 12px; flex-direction: column; align-items: stretch; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px; }
  .site-nav .nav-cta { margin: 4px 0 0; text-align: center; }
  .hero { padding-top: 62px; }
  .hero-grid { grid-template-columns: 1fr; gap: 38px; }
  .product-visual { min-height: 470px; }
  .feature-grid, .contact-grid { grid-template-columns: 1fr; }
  .card-icon { margin-bottom: 30px; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 650px) {
  .container, .narrow { width: min(100% - 28px, 1160px); }
  .brand small { display: none; }
  .hero { padding: 48px 0 54px; }
  h1 { font-size: 43px; }
  .button-row .button { width: 100%; }
  .product-visual { min-height: 420px; }
  .phone-card { width: 250px; min-height: 400px; padding: 18px; }
  .phone-top { margin-bottom: 30px; }
  .connect-ring { width: 144px; height: 144px; margin-bottom: 24px; }
  .connect-ring::after { width: 108px; height: 108px; }
  .float-card { padding: 11px 13px; font-size: 12px; }
  .float-one { right: -4px; }
  .float-two { left: -4px; bottom: 34px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section { padding: 74px 0; }
  .steps, .price-grid, .download-grid { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 36px; }
  .price-card { padding: 28px; }
  .cta-inner { padding: 30px 24px; flex-direction: column; align-items: flex-start; }
  .cta-inner .button { width: 100%; }
  .footer-links { grid-template-columns: repeat(2, 1fr); gap: 28px 52px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: no-preference) {
  .button, .contact-card { transition: transform .18s ease, background .18s ease, border-color .18s ease; }
}