:root {
  --bg: #f7f4ee;
  --panel: rgba(255, 255, 255, 0.74);
  --panel-solid: #ffffff;
  --text: #171717;
  --muted: #656565;
  --line: rgba(20, 20, 20, 0.11);
  --dark: #111111;
  --accent: #7c5cff;
  --accent-2: #16a085;
  --soft: #efe9ff;
  --radius: 26px;
  --shadow: 0 24px 70px rgba(17, 17, 17, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(124, 92, 255, 0.20), transparent 34%),
    radial-gradient(circle at 90% 8%, rgba(22, 160, 133, 0.15), transparent 28%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 16px 5vw;
  background: rgba(247, 244, 238, 0.76);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 14px;
  background: var(--dark);
  color: white;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

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

.nav-cta {
  padding: 10px 16px;
  background: var(--dark);
  color: white;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: 42px;
  padding: 76px 5vw 58px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 44px 5vw auto auto;
  width: 420px;
  height: 420px;
  background: linear-gradient(135deg, rgba(124, 92, 255, .18), rgba(22, 160, 133, .12));
  filter: blur(6px);
  border-radius: 999px;
  z-index: -1;
}

.eyebrow,
.section-kicker,
.tag,
.plan {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(44px, 7vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero-subtitle {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-solid);
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(17, 17, 17, 0.06);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(17, 17, 17, 0.10);
}

.btn.primary {
  background: var(--dark);
  color: white;
  border-color: var(--dark);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.58);
}

.btn.full {
  width: 100%;
  margin-top: 18px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.trust-row span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--muted);
  font-size: 13px;
}

.launch-strip {
  max-width: 720px;
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid rgba(22, 160, 133, 0.28);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
  font-size: 14px;
}

.launch-strip strong {
  color: var(--text);
}

.hero-card {
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: 26px;
  background: rgba(17, 17, 17, 0.88);
  color: white;
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}

.terminal-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
}

.terminal-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .35);
}

.terminal-label {
  color: rgba(255, 255, 255, .62);
  margin: 0 0 18px;
  font-size: 14px;
}

.terminal-list {
  padding-left: 20px;
  margin: 0;
}

.terminal-list li {
  margin-bottom: 14px;
  font-size: 18px;
}

.mini-stat {
  margin-top: 28px;
  padding: 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
}

.mini-stat strong {
  display: block;
  font-size: 22px;
}

.mini-stat span {
  color: rgba(255, 255, 255, .64);
}

.section {
  padding: 72px 5vw;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 34px;
  align-items: end;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.35);
}

.section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.intro p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 19px;
}

.section-head {
  max-width: 780px;
  margin-bottom: 34px;
}

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

.card,
.case-card,
.price-card,
.step,
.qr-card {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 16px 42px rgba(17, 17, 17, 0.06);
}

.card .icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--soft);
  color: var(--accent);
  font-weight: 900;
}

.card h3,
.case-card h3,
.step h3 {
  margin: 18px 0 8px;
  font-size: 22px;
  letter-spacing: -0.025em;
}

.card p,
.case-card p,
.step p,
.plan-desc {
  color: var(--muted);
}

.card ul,
.price-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.card li,
.price-card li {
  margin-bottom: 8px;
}

.case-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  grid-template-rows: repeat(3, auto);
  gap: 18px;
}

.case-card.featured {
  grid-row: span 3;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(135deg, rgba(17, 17, 17, .88), rgba(17, 17, 17, .64)),
    radial-gradient(circle at 20% 20%, rgba(124, 92, 255, .7), transparent 32%),
    radial-gradient(circle at 90% 10%, rgba(22, 160, 133, .7), transparent 30%);
  color: white;
}

.case-card.featured p,
.case-card.featured span {
  color: rgba(255, 255, 255, .72);
}

.case-card span {
  display: inline-block;
  margin-top: 16px;
  font-weight: 800;
}

.process {
  background: rgba(255, 255, 255, 0.38);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.step span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--dark);
  color: white;
  font-weight: 900;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.price-card {
  position: relative;
  background: rgba(255, 255, 255, 0.76);
}

.price-card.highlight {
  background: #111;
  color: white;
  transform: translateY(-12px);
}

.price-card.highlight .plan,
.price-card.highlight .plan-desc,
.price-card.highlight li {
  color: rgba(255, 255, 255, 0.72);
}

.price-card h3 {
  margin: 0;
  font-size: 46px;
  letter-spacing: -0.055em;
}

.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  margin: 0;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fff;
  color: #111;
  font-size: 12px;
  font-weight: 900;
}

.price-note {
  color: var(--muted);
  margin-top: 18px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 20px;
  align-items: stretch;
}

.contact-copy {
  border-radius: 34px;
  padding: 34px;
  background: #111;
  color: white;
}

.contact-copy p {
  color: rgba(255, 255, 255, .72);
}

.qr-card {
  display: grid;
  place-items: center;
  text-align: center;
}

.qr-placeholder {
  width: min(300px, 78vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 22px;
  border-radius: 26px;
  border: 1px dashed rgba(17, 17, 17, .22);
  background:
    linear-gradient(45deg, rgba(17,17,17,.035) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(17,17,17,.035) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(17,17,17,.035) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(17,17,17,.035) 75%);
  background-size: 22px 22px;
  background-position: 0 0, 0 11px, 11px -11px, -11px 0px;
}

.qr-placeholder span {
  display: block;
  font-size: 24px;
  font-weight: 900;
}

.qr-placeholder small {
  display: block;
  max-width: 210px;
  color: var(--muted);
}

.footer {
  padding: 28px 5vw 38px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

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

  .hero {
    min-height: auto;
  }

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

  .case-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .price-card.highlight {
    transform: none;
  }

  .nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 18px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-cta {
    padding: 9px 12px;
  }

  .hero,
  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .grid.cards,
  .timeline {
    grid-template-columns: 1fr;
  }

  .hero-card {
    transform: none;
  }

  .footer {
    flex-direction: column;
  }
}


.qr-img {
  width: min(300px, 78vw);
  border-radius: 26px;
  box-shadow: 0 18px 46px rgba(17, 17, 17, 0.10);
}