:root {
  --bg: #fff8f2;
  --paper: rgba(255, 255, 255, 0.78);
  --ink: #152033;
  --muted: #57637a;
  --brand: #ff6a47;
  --brand-deep: #e74b27;
  --gold: #ffbd59;
  --teal: #0f9b96;
  --navy: #16324f;
  --plum: #7348a7;
  --line: rgba(21, 32, 51, 0.08);
  --shadow: 0 24px 80px rgba(33, 27, 67, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 189, 89, 0.34), transparent 28%),
    radial-gradient(circle at 90% 10%, rgba(15, 155, 150, 0.18), transparent 24%),
    linear-gradient(180deg, #fffaf4 0%, #fff4ea 42%, #fffdf9 100%);
  font-family: "Alibaba PuHuiTi 3.0", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.3) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.26), transparent 85%);
}

.site-shell {
  width: min(1200px, calc(100vw - 32px));
  margin: 0 auto;
  padding-bottom: 36px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 24px;
  background: rgba(255, 252, 247, 0.72);
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 14px;
}

.site-nav {
  display: inline-flex;
  gap: 18px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.hero,
.section,
.strip,
.site-footer {
  animation: rise-up 0.7s ease both;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 72px 12px 36px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "ZCOOL XiaoWei", "Noto Serif SC", "Songti SC", serif;
  font-weight: 400;
}

h1 {
  font-size: clamp(46px, 7vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.hero-text,
.section-head p:last-child,
.feature-card p,
.timeline-item p,
.showcase-panel figcaption,
.trust-grid p,
.download-card p,
.site-footer p {
  color: var(--muted);
  line-height: 1.8;
}

.hero-text {
  max-width: 620px;
  margin: 24px 0 0;
  font-size: 16px;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #ff8e56 100%);
  box-shadow: 0 18px 34px rgba(255, 106, 71, 0.28);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 34px 0 0;
  list-style: none;
}

.hero-metrics li {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.62));
  box-shadow: var(--shadow);
}

.hero-metrics strong {
  display: block;
  font-size: 18px;
}

.hero-metrics span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.hero-visual {
  position: relative;
  min-height: 760px;
}

.phone-frame {
  position: absolute;
  right: 28px;
  top: 10px;
  width: min(380px, 78vw);
  padding: 16px;
  border-radius: 44px;
  background: linear-gradient(180deg, #122236 0%, #274866 100%);
  box-shadow: 0 40px 100px rgba(13, 23, 38, 0.24);
}

.phone-glow {
  position: absolute;
  inset: 16px;
  border-radius: 30px;
  background: radial-gradient(circle at top, rgba(255, 189, 89, 0.2), transparent 32%);
  pointer-events: none;
}

.phone-screen {
  position: relative;
  display: block;
  width: 100%;
  border-radius: 30px;
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 14px;
  width: 270px;
  padding: 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.floating-card img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.floating-card strong {
  display: block;
  font-size: 16px;
}

.floating-card span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.card-chat {
  left: 0;
  top: 120px;
}

.card-verify {
  left: 30px;
  bottom: 110px;
}

.strip {
  margin: 8px 0 18px;
  padding: 18px 28px;
  border-radius: 22px;
  background: linear-gradient(90deg, #fff1de, #fff8ef);
  border: 1px solid rgba(255, 189, 89, 0.28);
}

.strip p {
  margin: 0;
  color: #7b5631;
  text-align: center;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.section {
  padding: 84px 12px 0;
}

.section-head {
  display: grid;
  gap: 12px;
}

.section-head h2 {
  max-width: 760px;
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.08;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 250px;
  padding: 24px;
  border-radius: 30px;
  color: #fff;
  box-shadow: var(--shadow);
}

.feature-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}

.feature-card img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}

.feature-card h3 {
  margin-top: 54px;
  font-size: 28px;
}

.feature-card p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.84);
}

.warm { background: linear-gradient(135deg, #ff7d4e 0%, #ff4c55 100%); }
.teal { background: linear-gradient(135deg, #13a69b 0%, #0f7d79 100%); }
.sand { background: linear-gradient(135deg, #f2c779 0%, #d89233 100%); }
.navy { background: linear-gradient(135deg, #17344f 0%, #24507b 100%); }
.plum { background: linear-gradient(135deg, #7d5ee9 0%, #6440a2 100%); }
.graphite { background: linear-gradient(135deg, #2a3140 0%, #485065 100%); }

.experience .timeline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.timeline-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.04);
}

.timeline-item span {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #ff9650 100%);
  font-weight: 700;
}

.timeline-item h3 {
  font-size: 24px;
}

.timeline-item p {
  margin: 8px 0 0;
}

.showcase {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  margin-top: 24px;
}

.showcase-stack {
  display: grid;
  gap: 18px;
}

.showcase-panel {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.showcase-panel img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.showcase-panel figcaption {
  padding: 16px 18px 20px;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.trust-grid article {
  padding: 24px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.66));
  border: 1px solid rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
}

.trust-grid h3 {
  font-size: 28px;
}

.trust-grid p {
  margin: 10px 0 0;
}

.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
  border-radius: 34px;
  background: linear-gradient(135deg, #13253a 0%, #1f4466 48%, #0e8d89 100%);
  color: #fff;
  box-shadow: 0 34px 80px rgba(15, 23, 42, 0.18);
}

.download-card h2 {
  max-width: 620px;
  font-size: clamp(30px, 4vw, 50px);
}

.download-card p {
  max-width: 640px;
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.download-card .button-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 42px;
  padding: 20px 12px 8px;
}

.site-footer div {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand-text span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.site-footer img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.site-footer p {
  margin: 0;
  text-align: right;
}

@keyframes rise-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .hero,
  .showcase,
  .download-card {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 24px;
  }

  .hero-visual {
    min-height: 620px;
  }

  .phone-frame {
    position: relative;
    right: auto;
    margin: 0 auto;
  }

  .card-chat {
    top: 28px;
    left: 8px;
  }

  .card-verify {
    left: auto;
    right: 8px;
    bottom: 30px;
  }

  .feature-grid,
  .experience .timeline,
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }

  .download-card {
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100vw - 20px, 100%);
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    top: 10px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .hero {
    padding-top: 42px;
  }

  h1 {
    font-size: clamp(40px, 15vw, 58px);
  }

  .hero-metrics,
  .feature-grid,
  .experience .timeline,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 560px;
  }

  .phone-frame {
    width: min(320px, 82vw);
  }

  .floating-card {
    width: 220px;
    padding: 14px;
  }

  .card-chat {
    top: 6px;
    left: 0;
  }

  .card-verify {
    right: 0;
    bottom: 8px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer p {
    text-align: left;
  }
}