:root {
  --bg: #f7f8f7;
  --surface: #ffffff;
  --ink: #1f2321;
  --muted: #68716b;
  --line: #e2e7e3;
  --brand: #16866e;
  --brand-deep: #0f6856;
  --brand-soft: #e4f5ee;
  --note: #f3f7f4;
  --warning: #8a5a1f;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.7;
}
a { color: var(--brand-deep); }
.shell { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.topbar { padding: 18px 0; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.92); }
.topbar .shell { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; text-decoration: none; }
.mark { width: 32px; height: 32px; border-radius: 9px; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 16px; }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 17px; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
nav a:hover, nav a:focus { color: var(--brand-deep); text-decoration: underline; }
.hero { padding: 88px 0 56px; }
.hero-copy { max-width: 660px; }
.hero-layout { display: grid; grid-template-columns: minmax(0, .94fr) minmax(360px, .96fr); align-items: center; gap: 26px; }
.hero-visual { position: relative; min-height: 420px; overflow: hidden; border: 1px solid var(--line); border-radius: 28px; background: #eef4f0; box-shadow: 0 24px 70px rgba(19, 61, 50, .10); }
.hero-image { width: 100%; height: 100%; min-height: 420px; display: block; object-fit: cover; object-position: 67% center; animation: hero-float 8s ease-in-out infinite; }
.hero-glow { position: absolute; width: 154px; height: 154px; border-radius: 50%; background: rgba(255,255,255,.72); filter: blur(10px); top: -42px; left: -34px; animation: glow-pulse 5.5s ease-in-out infinite; }
.hero-chip { position: absolute; display: inline-flex; align-items: center; gap: 7px; padding: 9px 12px; border: 1px solid rgba(255,255,255,.8); border-radius: 999px; background: rgba(255,255,255,.88); box-shadow: 0 10px 30px rgba(20,72,56,.12); color: var(--brand-deep); font-size: 13px; font-weight: 800; backdrop-filter: blur(10px); animation: chip-float 6s ease-in-out infinite; }
.hero-chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }
.hero-chip-one { top: 28px; left: 25px; }
.hero-chip-two { right: 21px; bottom: 29px; animation-delay: -2.5s; }
.eyebrow { margin: 0 0 14px; color: var(--brand-deep); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(40px, 7vw, 66px); letter-spacing: -.045em; line-height: 1.1; }
h1 span { color: var(--brand-deep); }
h2 { margin: 0; font-size: clamp(26px, 4vw, 38px); letter-spacing: -.025em; line-height: 1.2; }
h3 { margin: 0; font-size: 20px; line-height: 1.35; }
.lead { margin: 22px 0 0; color: var(--muted); font-size: 19px; }
.pill { display: inline-block; margin: 24px 0 0; padding: 8px 13px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-deep); font-size: 14px; font-weight: 700; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 22px; margin-top: 28px; }
.hero-actions .cta { margin: 0; }
.text-action { font-weight: 750; text-decoration: none; }
.text-action:hover { text-decoration: underline; }
.promise-row { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 25px; color: var(--muted); font-size: 13px; font-weight: 650; }
.promise-row span { display: inline-flex; align-items: center; gap: 6px; }
.promise-row span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.section { padding: 54px 0; }
.section-label { margin: 0 0 10px; color: var(--brand-deep); font-size: 12px; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .78fr); align-items: end; gap: 30px; }
.section-heading > p { margin: 0; color: var(--muted); font-size: 17px; }
.intro-panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .85fr); align-items: center; gap: 40px; padding: 34px; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(135deg, #ffffff 0%, #f4faf7 100%); }
.intro-panel > p { margin: 0; color: var(--muted); font-size: 17px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 26px; }
.card { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.card .icon { display: grid; width: 40px; height: 40px; margin-bottom: 22px; border-radius: 12px; place-items: center; background: var(--brand-soft); color: var(--brand-deep); font-weight: 800; }
.card p { margin: 10px 0 0; color: var(--muted); }
.feature-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 30px; }
.feature-detail { overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: 0 10px 30px rgba(30, 54, 44, .035); transition: transform 180ms ease, box-shadow 180ms ease; }
.feature-detail:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(30, 54, 44, .10); }
.feature-detail-image { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: var(--brand-soft); }
.feature-ai .feature-detail-image { background: #e6f5ef; }
.feature-video .feature-detail-image { background: #eaf1f9; }
.feature-ab .feature-detail-image { background: #f0ebf8; }
.feature-images .feature-detail-image { background: #fbf0e6; }
.feature-detail-body { padding: 25px; }
.feature-kicker { margin: 0 0 9px; color: var(--brand-deep); font-size: 13px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.feature-detail p { margin: 12px 0 0; color: var(--muted); }
.feature-points { margin: 18px 0 0; padding: 0; list-style: none; }
.feature-points li { position: relative; margin-top: 8px; padding-left: 18px; color: #516158; font-size: 14px; }
.feature-points li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }
.feature-note { margin-top: 16px; padding: 11px 13px; border-radius: 10px; background: var(--note); color: #536159; font-size: 13px; }
.notice { margin-top: 24px; padding: 20px 22px; border-left: 4px solid var(--brand); border-radius: 0 14px 14px 0; background: var(--note); color: #405047; }
.notice strong { color: var(--ink); }
.policy-panel { display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); align-items: center; gap: 48px; padding: 42px; border-radius: 24px; background: #e9f5ef; }
.policy-panel .lead { font-size: 17px; }
.document-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 24px; }
.policy-panel .document-list { margin: 0; }
.document-list a { position: relative; display: block; min-height: 132px; padding: 20px 42px 20px 20px; border: 1px solid rgba(22, 134, 110, .17); border-radius: 16px; background: var(--surface); color: var(--ink); font-weight: 750; text-decoration: none; transition: transform 180ms ease, border-color 180ms ease; }
.document-list a span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; font-weight: 400; }
.document-list a i { position: absolute; right: 17px; bottom: 18px; color: var(--brand-deep); font-size: 18px; font-style: normal; }
.document-list a:hover { border-color: var(--brand); transform: translateY(-2px); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.step { padding: 24px; border: 1px solid var(--line); border-top: 3px solid var(--brand); border-radius: 0 0 16px 16px; background: var(--surface); }
.step-number { display: block; margin-bottom: 17px; color: var(--brand-deep); font-size: 13px; font-weight: 850; letter-spacing: .08em; }
.step b { display: block; margin-bottom: 8px; color: var(--ink); font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.legal { max-width: 820px; padding: 56px 0 88px; }
.legal header { margin-bottom: 42px; }
.legal .updated { color: var(--muted); font-size: 14px; }
.legal section { margin-top: 34px; }
.legal p, .legal li { color: #475049; }
.legal .summary { padding: 22px; border-radius: 16px; background: var(--brand-soft); color: #285f52; }
.guide { max-width: 920px; padding: 62px 0 88px; }
.guide-header { max-width: 720px; }
.guide-header .summary { margin: 22px 0 0; padding: 20px 22px; border-radius: 16px; background: var(--brand-soft); color: #285f52; }
.guide-list { display: grid; gap: 20px; margin-top: 40px; }
.guide-card { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 22px; padding: 29px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); }
.guide-index { display: grid; width: 52px; height: 52px; border-radius: 14px; place-items: center; background: var(--brand-soft); color: var(--brand-deep); font-size: 15px; font-weight: 850; letter-spacing: .05em; }
.guide-card h2 { font-size: 25px; }
.guide-card p { margin: 10px 0 0; color: var(--muted); }
.guide-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 20px 0 0; padding: 0; list-style: none; }
.guide-flow li { min-height: 68px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfb; color: #425148; font-size: 14px; line-height: 1.45; }
.guide-flow b { display: block; margin-bottom: 3px; color: var(--brand-deep); font-size: 12px; }
.guide-note { margin-top: 18px; padding: 13px 15px; border-left: 3px solid var(--brand); border-radius: 0 10px 10px 0; background: var(--note); color: #526158; font-size: 14px; }
.guide-faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 40px; }
.guide-faq article { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.guide-faq h3 { font-size: 17px; }
.guide-faq p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.legal table { width: 100%; margin-top: 16px; border-collapse: collapse; background: var(--surface); font-size: 15px; }
.legal th, .legal td { padding: 14px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.legal th { width: 28%; background: #fafcfb; color: var(--ink); }
.back { color: var(--brand-deep); font-size: 14px; font-weight: 700; text-decoration: none; }
.cta { display: inline-block; margin-top: 22px; padding: 12px 17px; border-radius: 10px; background: var(--brand); color: #fff; font-weight: 750; text-decoration: none; }
footer { padding: 28px 0 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .shell { display: flex; justify-content: space-between; gap: 16px; }
@keyframes hero-float { 0%,100% { transform: scale(1.01) translateY(0); } 50% { transform: scale(1.035) translateY(-7px); } }
@keyframes chip-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes glow-pulse { 0%,100% { opacity: .6; transform: scale(.96); } 50% { opacity: 1; transform: scale(1.08); } }
@media (max-width: 720px) {
  .shell { width: min(var(--max), calc(100% - 28px)); }
  .topbar .shell { align-items: flex-start; flex-direction: column; }
  nav { justify-content: flex-start; }
  .hero { padding: 54px 0 32px; }
  .hero-layout, .grid, .feature-detail-grid, .document-list, .steps, .section-heading, .intro-panel, .policy-panel, .guide-flow, .guide-faq { grid-template-columns: 1fr; }
  .intro-panel, .policy-panel { gap: 22px; padding: 26px; }
  .hero-visual, .hero-image { min-height: 330px; }
  .legal { padding-top: 38px; }
  .guide { padding-top: 42px; }
  .guide-card { grid-template-columns: 1fr; gap: 14px; padding: 23px; }
  .legal table { display: block; overflow-x: auto; }
  footer .shell { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}