:root {
  --ink: #14202b;
  --muted: #60707d;
  --line: #dce4e8;
  --paper: #f7faf9;
  --card: #ffffff;
  --green: #13795b;
  --green-dark: #0c5b44;
  --green-soft: #dff3eb;
  --yellow: #f1b834;
  --navy: #102033;
  --shadow: 0 24px 70px rgba(16, 32, 51, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.7;
}

a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 72px;
  padding: 12px max(24px, calc((100vw - 1180px) / 2));
  background: rgba(247, 250, 249, 0.92);
  border-bottom: 1px solid rgba(220, 228, 232, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 212px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 13px;
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 8px 22px rgba(19, 121, 91, 0.24);
}

.brand strong, .brand small { display: block; }
.brand strong { font-size: 17px; }
.brand small { color: var(--muted); }

.nav {
  display: flex;
  flex: 1;
  justify-content: center;
  gap: 28px;
}

.nav a, .footer a { text-decoration: none; }
.nav a:hover, .footer a:hover { color: var(--green); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.button:hover { transform: translateY(-2px); }
.button.primary { color: #fff; background: var(--green); box-shadow: 0 12px 28px rgba(19, 121, 91, .23); }
.button.primary:hover { background: var(--green-dark); }
.button.secondary { color: var(--navy); background: #fff; border-color: var(--line); }
.button.small { min-height: 40px; padding: 0 17px; }

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  align-items: center;
  min-height: 670px;
  padding: 78px max(24px, calc((100vw - 1180px) / 2));
  background:
    radial-gradient(circle at 15% 15%, rgba(241, 184, 52, .18), transparent 28%),
    linear-gradient(135deg, #f9fbf7 0%, #eaf5f0 100%);
}

.hero::after {
  position: absolute;
  right: -130px;
  bottom: -210px;
  width: 500px;
  height: 500px;
  border: 80px solid rgba(19, 121, 91, .06);
  border-radius: 50%;
  content: "";
}

.hero-copy { position: relative; z-index: 2; max-width: 680px; }
.eyebrow { margin: 0 0 12px; color: var(--green); font-weight: 800; letter-spacing: .08em; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(42px, 5.4vw, 74px); line-height: 1.08; letter-spacing: -.04em; }
h2 { margin-bottom: 16px; font-size: clamp(30px, 3.5vw, 48px); line-height: 1.2; }
h3 { margin-bottom: 10px; line-height: 1.35; }
.lead { max-width: 660px; color: #3b4e5c; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 30px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 10px; color: #415461; font-size: 14px; }
.hero-facts span { padding: 7px 12px; background: rgba(255,255,255,.72); border: 1px solid rgba(19,121,91,.13); border-radius: 999px; }

.hero-shot {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 18px;
  margin: 0;
  padding: 12px 0;
}
.hero-shot-frame {
  width: min(342px, 78vw);
  padding: 11px;
  background: #0d1720;
  border: 1px solid #344551;
  border-radius: 40px;
  box-shadow: var(--shadow);
  transform: rotate(1.4deg);
}
.hero-shot-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 29px;
}
.hero-shot figcaption {
  max-width: 390px;
  padding: 15px 18px;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 14px 38px rgba(16,32,51,.11);
  text-align: center;
}
.hero-shot figcaption strong, .hero-shot figcaption span { display: block; }
.hero-shot figcaption span { color: var(--muted); font-size: 13px; }

.phone-stage { position: relative; z-index: 2; display: grid; place-items: center; min-height: 530px; }
.phone {
  width: min(340px, 78vw);
  padding: 12px;
  color: #fff;
  background: #101820;
  border: 1px solid #394751;
  border-radius: 42px;
  box-shadow: var(--shadow);
  transform: rotate(2.3deg);
}
.phone-screen { overflow: hidden; min-height: 560px; background: #f5f7f6; border-radius: 32px; }
.phone-head { display: flex; align-items: center; justify-content: space-between; padding: 24px 20px 16px; color: var(--ink); background: #fff; }
.phone-head strong { font-size: 20px; }
.sync-dot { width: 11px; height: 11px; background: #22a879; border-radius: 50%; box-shadow: 0 0 0 6px rgba(34,168,121,.14); }
.checklist-card { margin: 16px; padding: 18px; color: #fff; background: var(--navy); border-radius: 18px; }
.checklist-card small, .checklist-card strong, .checklist-card span { display: block; }
.checklist-card small { color: #a8bbc9; }
.checklist-card strong { margin: 6px 0 15px; font-size: 19px; }
.progress { overflow: hidden; height: 7px; background: #34495d; border-radius: 999px; }
.progress i { display: block; width: 68%; height: 100%; background: var(--yellow); }
.rows { display: grid; gap: 10px; padding: 0 16px; }
.row { display: grid; grid-template-columns: 38px 1fr 46px; align-items: center; gap: 10px; padding: 14px; color: var(--ink); background: #fff; border-radius: 15px; box-shadow: 0 7px 18px rgba(16,32,51,.06); }
.row-index { display: grid; width: 32px; height: 32px; place-items: center; background: var(--green-soft); border-radius: 10px; color: var(--green); font-weight: 800; }
.row strong, .row small { display: block; }
.row small { color: var(--muted); }
.camera-chip { display: grid; width: 42px; height: 42px; place-items: center; background: var(--green); border-radius: 13px; font-size: 20px; }
.phone-tabs { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 18px; padding: 15px 8px 18px; color: var(--muted); background: #fff; font-size: 12px; text-align: center; }
.phone-tabs strong { color: var(--green); }
.float-note { position: absolute; right: 2%; bottom: 9%; padding: 15px 18px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.float-note strong, .float-note span { display: block; }
.float-note span { color: var(--muted); font-size: 13px; }

.section { padding: 86px max(24px, calc((100vw - 1180px) / 2)); }
.section.white { background: #fff; }
.section.dark { color: #fff; background: var(--navy); }
.section.dark .eyebrow { color: #6dd1ad; }
.section-head { max-width: 760px; margin-bottom: 38px; }
.section-head > p:last-child { color: var(--muted); font-size: 17px; }
.dark .section-head > p:last-child { color: #b8c6d1; }

.product-screens {
  background:
    radial-gradient(circle at 88% 8%, rgba(241,184,52,.16), transparent 24%),
    linear-gradient(180deg, #edf7f2 0%, #f7faf9 100%);
}
.screen-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; align-items: start; }
.screen-card {
  overflow: hidden;
  margin: 0;
  background: #fff;
  border: 1px solid rgba(19,121,91,.14);
  border-radius: 24px;
  box-shadow: 0 14px 38px rgba(16,32,51,.08);
}
.screen-media { padding: 10px; background: #0d1720; }
.screen-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 15px;
}
.screen-copy { min-height: 286px; padding: 23px 22px 25px; }
.screen-copy h3 { margin: 7px 0 11px; font-size: 21px; }
.screen-copy p { margin-bottom: 0; color: var(--muted); font-size: 15px; }
.screen-index { color: var(--green); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
.screen-proof { margin: 24px 0 0; color: #4d6257; font-size: 14px; text-align: center; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 230px; padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 10px 28px rgba(16,32,51,.05); }
.feature-card .icon { display: grid; width: 48px; height: 48px; margin-bottom: 20px; place-items: center; color: #fff; background: var(--green); border-radius: 14px; font-size: 23px; }
.feature-card p { color: var(--muted); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: flow; }
.step { position: relative; padding: 28px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.13); border-radius: 20px; }
.step::before { counter-increment: flow; content: "0" counter(flow); display: block; margin-bottom: 30px; color: var(--yellow); font-size: 30px; font-weight: 900; }
.step p { color: #b8c6d1; }

.trust-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 22px; }
.trust-panel { padding: 34px; background: #fff; border: 1px solid var(--line); border-radius: 24px; }
.trust-list { display: grid; gap: 14px; margin: 24px 0 0; padding: 0; list-style: none; }
.trust-list li { padding: 15px 16px 15px 45px; background: var(--paper); border-radius: 14px; }
.trust-list li::before { float: left; margin-left: -28px; color: var(--green); content: "✓"; font-weight: 900; }
.login-panel { color: #fff; background: linear-gradient(145deg, #173149, #0e6f55); }
.login-panel p { color: #d4e3e8; }
.status-pill { display: inline-flex; padding: 6px 11px; color: #243441; background: var(--yellow); border-radius: 999px; font-size: 13px; font-weight: 800; }

.cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 48px; background: #fff; border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.cta p { margin-bottom: 0; color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.footer { display: grid; grid-template-columns: 1fr auto; gap: 26px; padding: 36px max(24px, calc((100vw - 1180px) / 2)); color: #cbd5dc; background: #0a1521; }
.footer strong, .footer span { display: block; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 18px; }
.filing { color: #9eb0bd; }

.legal-main { padding: 58px max(24px, calc((100vw - 920px) / 2)) 92px; }
.legal-hero { margin-bottom: 28px; padding: 44px; color: #fff; background: linear-gradient(135deg, var(--navy), var(--green-dark)); border-radius: 26px; }
.legal-hero h1 { margin-bottom: 12px; font-size: clamp(34px, 5vw, 54px); }
.legal-hero p { margin-bottom: 0; color: #d4e3e8; }
.legal-card { padding: 42px; background: #fff; border: 1px solid var(--line); border-radius: 24px; }
.legal-card h2 { margin-top: 38px; font-size: 25px; }
.legal-card h2:first-child { margin-top: 0; }
.legal-card h3 { margin-top: 24px; }
.legal-card p, .legal-card li { color: #425461; }
.legal-card a { color: var(--green); }
.legal-card table { width: 100%; border-collapse: collapse; }
.legal-card th, .legal-card td { padding: 13px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.legal-card th { background: var(--paper); }
.notice { padding: 16px 18px; color: #284337; background: var(--green-soft); border-left: 4px solid var(--green); border-radius: 9px; }

@media (max-width: 900px) {
  .nav { display: none; }
  .topbar { justify-content: space-between; }
  .brand { min-width: 0; }
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .phone-stage { min-height: 600px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .screen-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: 1fr; }
  .cta { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 620px) {
  .topbar .button { display: none; }
  h1 { font-size: 44px; }
  .hero { min-height: auto; }
  .hero-shot-frame { transform: none; }
  .phone { transform: none; }
  .float-note { right: 0; bottom: 4%; }
  .feature-grid, .screen-grid, .steps { grid-template-columns: 1fr; }
  .screen-copy { min-height: 0; }
  .section { padding-top: 64px; padding-bottom: 64px; }
  .cta, .legal-card, .legal-hero { padding: 26px; }
  .footer { grid-template-columns: 1fr; }
  .footer-links { align-items: flex-start; justify-content: flex-start; flex-direction: column; gap: 9px; }
  .legal-card { overflow-x: auto; }
}