:root {
  color-scheme: light;
  --brand: #fb6b72;
  --brand-dark: #d94b55;
  --brand-soft: #fff0ef;
  --ink: #252a34;
  --muted: #69707d;
  --line: #f0d8d5;
  --paper: #fffaf8;
  --white: #ffffff;
  --blue: #216dff;
  --shadow: 0 24px 70px rgba(89, 43, 36, 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", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(255, 250, 248, 0.88);
  border-bottom: 1px solid rgba(240, 216, 213, 0.8);
  backdrop-filter: blur(18px);
}

.brand,
.site-nav,
.hero-actions,
.hero-metrics,
.footer-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
}

.site-nav {
  gap: 26px;
  color: #5e4650;
  font-size: 15px;
}

.site-nav a:hover,
.footer-links a:hover {
  color: var(--brand-dark);
}

.nav-cta,
.primary-btn,
.secondary-btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 700;
}

.nav-cta,
.primary-btn {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 12px 26px rgba(251, 107, 114, 0.24);
}

.nav-cta {
  padding: 0 18px;
  font-size: 14px;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 680px;
  background: #f9b17d;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(248, 93, 102, 0.82), rgba(246, 166, 99, 0.68)),
    url("./hero-bg.png") center / cover no-repeat;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.16) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), transparent 70%);
}

.hero-inner {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 88px 24px 82px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr);
  align-items: center;
  gap: 64px;
}

.hero-copy {
  color: #fff;
}

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

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.88);
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(46px, 7vw, 78px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.25;
}

.hero-lead {
  max-width: 650px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 20px;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.primary-btn,
.secondary-btn {
  padding: 0 24px;
}

.primary-btn {
  background: #fff;
  color: var(--brand-dark);
}

.secondary-btn {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.55);
  background: rgba(255,255,255,0.12);
}

.hero-metrics {
  gap: 14px;
  flex-wrap: wrap;
}

.hero-metrics div {
  min-width: 142px;
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 18px;
  background: rgba(255,255,255,0.14);
}

.hero-metrics dt {
  font-size: 22px;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 0;
  color: rgba(255,255,255,0.82);
}

.phone-stage {
  display: flex;
  justify-content: center;
}

.phone-shell {
  width: min(390px, 100%);
  min-height: 646px;
  padding: 14px;
  border-radius: 42px;
  background: #1c1e25;
  box-shadow: 0 34px 90px rgba(50, 34, 28, 0.34);
}

.phone-status {
  width: 128px;
  height: 28px;
  margin: 0 auto 12px;
  border-radius: 999px;
  background: #050507;
}

.app-preview {
  overflow: hidden;
  min-height: 580px;
  border-radius: 30px;
  background: #fff6f3;
}

.app-hero {
  padding: 28px 26px 22px;
  color: #fff;
  background: linear-gradient(135deg, #fb6b72, #f4aa65);
}

.app-hero span,
.app-hero strong {
  display: block;
}

.app-hero span {
  font-size: 26px;
  font-weight: 900;
}

.app-hero strong {
  font-size: 17px;
  opacity: 0.92;
}

.search-pill,
.scope-tabs,
.summary-panel,
.recent-line,
.book-grid article {
  background: #fff;
  box-shadow: 0 10px 30px rgba(112, 62, 56, 0.08);
}

.search-pill {
  margin: -16px 20px 14px;
  padding: 11px 18px;
  border-radius: 999px;
  color: #9a8a8b;
}

.scope-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 20px 14px;
  padding: 6px;
  border-radius: 16px;
  color: #7b5960;
  text-align: center;
  font-weight: 800;
}

.scope-tabs span {
  padding: 8px 0;
  border-radius: 12px;
}

.scope-tabs .active {
  color: var(--brand);
  background: #fff7f7;
}

.summary-panel {
  margin: 0 20px 12px;
  padding: 18px;
  border-radius: 18px;
}

.summary-panel small {
  color: #8f7f82;
}

.summary-panel strong {
  display: block;
  color: var(--brand);
  font-size: 34px;
  line-height: 1.1;
}

.summary-panel div {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  color: #7c6f75;
  font-size: 14px;
}

.recent-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 20px 14px;
  padding: 12px;
  border-radius: 14px;
  white-space: nowrap;
}

.recent-line b,
.recent-line em {
  padding: 2px 8px;
  border-radius: 999px;
  font-style: normal;
  font-size: 12px;
}

.recent-line b {
  color: var(--brand);
  background: var(--brand-soft);
}

.recent-line em {
  color: var(--blue);
  background: #edf6ff;
}

.recent-line strong {
  margin-left: auto;
  color: var(--blue);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 0 20px;
}

.book-grid article {
  min-height: 142px;
  padding: 16px;
  border-radius: 18px;
}

.book-grid span {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--brand-soft);
  font-size: 12px;
}

.book-grid b,
.book-grid strong {
  display: block;
}

.book-grid b {
  margin-top: 16px;
  font-size: 19px;
}

.book-grid strong {
  margin-top: 10px;
  color: var(--brand);
  font-size: 22px;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 86px 24px;
}

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

.intro {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: 56px;
}

.intro-copy {
  color: var(--muted);
  font-size: 18px;
}

.feature-grid,
.showcase-layout,
.scene-list {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-card,
.screen-card,
.scene-list article,
.qr-card,
.faq details {
  background: #fff;
  border: 1px solid rgba(240, 216, 213, 0.72);
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 28px;
  border-radius: 24px;
}

.feature-card p,
.screen-card p,
.scene-list p,
.wechat-copy p,
.faq p,
.site-footer p,
.site-footer small {
  color: var(--muted);
}

.icon {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 16px;
  color: var(--brand-dark);
  background: var(--brand-soft);
  font-weight: 900;
}

.showcase-layout {
  grid-template-columns: repeat(3, 1fr);
}

.screen-card {
  overflow: hidden;
  border-radius: 26px;
  padding: 18px 18px 24px;
}

.mini-screen {
  min-height: 250px;
  padding: 20px;
  border-radius: 20px;
  background: #fff6f3;
  margin-bottom: 20px;
}

.mini-top {
  padding: 18px;
  border-radius: 18px;
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, #fb6b72, #f4aa65);
}

.mini-stat {
  margin: 14px 0;
  padding: 18px;
  border-radius: 16px;
  background: #fff;
}

.mini-stat span,
.mini-stat b {
  display: block;
}

.mini-stat b {
  color: var(--brand);
  font-size: 30px;
}

.mini-row,
.mini-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  text-align: center;
}

.mini-row span,
.mini-tabs b {
  padding: 9px 4px;
  border-radius: 12px;
  background: #fff;
  font-size: 13px;
}

.member-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding: 18px;
  border-radius: 16px;
  background: #fff;
}

.member-row span {
  color: var(--blue);
  background: #edf6ff;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
}

.bar {
  height: 34px;
  margin-bottom: 18px;
  overflow: hidden;
  border-radius: 999px;
  background: #fff;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #fb6b72, #f4aa65);
}

.stat-caption {
  margin-top: 32px;
  color: var(--muted);
  text-align: center;
}

.scene-list {
  grid-template-columns: repeat(4, 1fr);
}

.scene-list article {
  min-height: 170px;
  padding: 26px;
  border-radius: 24px;
}

.wechat-section {
  max-width: 1180px;
  margin: 20px auto 0;
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 50px;
  align-items: center;
  border-radius: 34px;
  color: #fff;
  background: linear-gradient(135deg, #fb6b72, #f4aa65);
  box-shadow: var(--shadow);
}

.wechat-section .eyebrow,
.wechat-copy p {
  color: rgba(255,255,255,0.86);
}

.wechat-steps {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.wechat-steps li {
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(255,255,255,0.16);
}

.qr-card {
  padding: 24px;
  border-radius: 26px;
  color: var(--ink);
  text-align: center;
}

.mini-program-code {
  width: 210px;
  height: 210px;
  margin: 0 auto 16px;
  border-radius: 22px;
  object-fit: cover;
  border: 10px solid #fff;
  box-shadow: 0 14px 34px rgba(67, 39, 34, 0.14);
}

.qr-card strong,
.qr-card span {
  display: block;
}

.qr-card span {
  color: var(--muted);
  font-size: 14px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq details {
  border-radius: 18px;
  padding: 0 22px;
}

.faq summary {
  cursor: pointer;
  padding: 20px 0;
  font-weight: 800;
}

.faq details p {
  margin-bottom: 22px;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 54px 24px 44px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  border-top: 1px solid var(--line);
}

.footer-links {
  gap: 20px;
}

.site-footer small {
  grid-column: 1 / -1;
}

.icp-link {
  color: inherit;
}

.icp-link:hover {
  color: var(--brand-dark);
}

.legal-page,
.not-found-page {
  min-height: calc(100vh - 190px);
}

.legal-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 64px 24px 76px;
}

.legal-hero {
  padding: 44px 0 34px;
}

.legal-hero h1,
.not-found-card h1 {
  margin: 0 0 16px;
  line-height: 1.12;
}

.legal-hero p,
.not-found-card p {
  max-width: 720px;
  color: var(--muted);
}

.legal-hero small {
  color: #8d7480;
}

.legal-card {
  padding: 42px;
  border: 1px solid rgba(240, 216, 213, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 50px rgba(89, 43, 36, 0.08);
}

.legal-card h2 {
  margin: 34px 0 10px;
  font-size: 22px;
}

.legal-card h2:first-child {
  margin-top: 0;
}

.legal-card p,
.legal-card li {
  color: #596170;
}

.legal-card ul {
  padding-left: 20px;
}

.not-found-page {
  display: grid;
  place-items: center;
  padding: 48px 20px;
  background:
    linear-gradient(120deg, rgba(251, 107, 114, 0.14), rgba(249, 177, 125, 0.16)),
    var(--paper);
}

.not-found-card {
  width: min(760px, 100%);
  padding: 48px;
  border: 1px solid rgba(240, 216, 213, 0.9);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.not-found-brand {
  margin-bottom: 34px;
}

@media (max-width: 920px) {
  .site-nav {
    display: none;
  }

  .hero-inner,
  .intro,
  .wechat-section {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    gap: 40px;
    padding-top: 64px;
  }

  .phone-stage {
    justify-content: flex-start;
  }

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

  .scene-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .wechat-section {
    margin-left: 24px;
    margin-right: 24px;
    padding: 36px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand span {
    max-width: 132px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 13px;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding: 48px 18px 56px;
  }

  h1 {
    font-size: 46px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .hero-metrics div {
    min-width: 0;
    flex: 1 1 130px;
  }

  .phone-shell {
    width: 100%;
    min-height: 0;
  }

  .feature-grid,
  .showcase-layout,
  .scene-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 62px 18px;
  }

  .wechat-section {
    margin: 0 18px;
    padding: 28px;
    border-radius: 26px;
  }

  .mini-program-code {
    width: 190px;
    height: 190px;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}