:root {
  color-scheme: light;
  --ink: #15212b;
  --muted: #62717d;
  --line: #dfe9e6;
  --paper: #f6faf8;
  --surface: #ffffff;
  --green: #0f9f68;
  --green-deep: #075f42;
  --teal: #1db9a0;
  --graphite: #24303a;
  --gold: #eab949;
  --shadow: 0 24px 70px rgba(18, 45, 40, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(18px, 5vw, 72px);
  background: rgba(246, 250, 248, 0.9);
  border-bottom: 1px solid rgba(223, 233, 230, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 900;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: cover;
  object-position: left center;
  border: 1px solid rgba(7, 95, 66, 0.12);
  border-radius: 8px;
  background: white;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.nav a {
  padding: 8px 0;
}

.nav a:hover {
  color: var(--green-deep);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
  align-items: center;
  gap: clamp(34px, 7vw, 88px);
  padding: clamp(46px, 8vw, 92px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(120deg, rgba(15, 159, 104, 0.12), transparent 34%),
    linear-gradient(150deg, #ffffff 0%, #eef8f4 52%, #f6faf8 100%);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green-deep);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(58px, 12vw, 128px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4.6vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 680px;
  color: #3b4a52;
  font-size: clamp(18px, 2.4vw, 25px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
}

.button.primary {
  color: white;
  background: var(--green-deep);
  box-shadow: 0 12px 28px rgba(7, 95, 66, 0.22);
}

.button.secondary {
  color: var(--green-deep);
  background: white;
  border-color: var(--line);
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(234, 185, 73, 0.18);
}

.brand-visual {
  display: grid;
  place-items: center;
}

.brand-visual img {
  display: block;
  width: min(100%, 560px);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid rgba(7, 95, 66, 0.12);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.section {
  padding: clamp(56px, 8vw, 94px) clamp(18px, 5vw, 72px);
}

.section.compact {
  padding-bottom: clamp(36px, 6vw, 68px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 32px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.feature-card p,
.status-copy p,
.download-band p,
.faq-list p,
.footer p,
.legal-page p {
  color: var(--muted);
  line-height: 1.75;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, var(--green-deep), var(--teal));
  font-weight: 900;
}

.status-section {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  padding: clamp(46px, 7vw, 84px) clamp(18px, 5vw, 72px);
  background: #ffffff;
  border-block: 1px solid var(--line);
}

.status-copy {
  max-width: 620px;
}

.timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  padding: 20px 22px 20px 56px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfc;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 24px;
  width: 14px;
  height: 14px;
  border: 2px solid #bfd3cb;
  border-radius: 999px;
  background: white;
}

.timeline li.done::before {
  border-color: var(--green);
  background: var(--green);
}

.timeline li.active {
  border-color: rgba(15, 159, 104, 0.38);
  box-shadow: 0 12px 34px rgba(15, 159, 104, 0.1);
}

.timeline li.active::before {
  border-color: var(--gold);
  background: var(--gold);
}

.timeline strong,
.timeline span {
  display: block;
}

.timeline span {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.65;
}

.download-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin: clamp(44px, 7vw, 80px) clamp(18px, 5vw, 72px) 0;
  padding: clamp(30px, 5vw, 54px);
  border-radius: 8px;
  color: white;
  background:
    linear-gradient(135deg, rgba(29, 185, 160, 0.18), transparent 48%),
    #12392c;
}

.download-band .eyebrow,
.download-band p {
  color: rgba(255, 255, 255, 0.8);
}

.download-band h2 {
  margin-bottom: 8px;
}

.qr-box {
  display: grid;
  place-items: center;
  width: 154px;
  height: 154px;
  padding: 12px;
  border: 10px solid white;
  border-radius: 8px;
  color: var(--graphite);
  text-align: center;
  background:
    linear-gradient(90deg, rgba(21, 33, 43, 0.2) 10px, transparent 10px) 0 0 / 28px 28px,
    linear-gradient(rgba(21, 33, 43, 0.2) 10px, transparent 10px) 0 0 / 28px 28px,
    #ffffff;
}

.qr-box span,
.qr-box small {
  display: block;
  padding: 4px 8px;
  border-radius: 8px;
  background: white;
}

.qr-box span {
  font-weight: 900;
}

.qr-box small {
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 960px;
}

details {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

summary {
  cursor: pointer;
  font-weight: 900;
}

details p {
  margin: 14px 0 0;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 72px);
  border-top: 1px solid var(--line);
  background: white;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 18px;
  color: var(--muted);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--green-deep);
}

.legal-page {
  max-width: 880px;
  margin: 0 auto;
  padding: 56px 20px 84px;
}

.legal-page h1 {
  margin-bottom: 18px;
  font-size: clamp(40px, 8vw, 76px);
  line-height: 1;
}

.legal-page section {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.legal-page li {
  margin: 10px 0;
  color: var(--muted);
  line-height: 1.75;
}

@media (max-width: 980px) {
  .hero,
  .status-section {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-actions,
  .footer {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .brand-visual img {
    width: min(100%, 420px);
  }

  .feature-grid,
  .download-band {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: auto;
  }

  .qr-box {
    width: 138px;
    height: 138px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}