:root {
  --bg: #fffdf7;
  --paper: #ffffff;
  --primary: #ff9558;
  --primary-deep: #f37f44;
  --primary-soft: #fff0e0;
  --secondary: #79bfa0;
  --secondary-deep: #35866b;
  --secondary-soft: #eaf7f0;
  --ink: #302b27;
  --muted: #7d766f;
  --faint: #aaa39b;
  --line: #eee6dc;
  --shadow: 0 18px 50px rgba(65, 46, 24, 0.09);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------------- 导航 ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(255, 253, 247, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand__logo {
  width: 34px;
  height: 34px;
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: var(--muted);
}

.nav__links a:hover { color: var(--ink); }

.nav__admin {
  padding: 7px 16px;
  border-radius: 20px;
  background: var(--primary-soft);
  color: var(--primary-deep) !important;
  font-weight: 600;
}

/* ---------------- 主视觉 ---------------- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
  padding: 76px 32px 64px;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary-deep);
}

.hero h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.16;
  letter-spacing: -1.4px;
}

.lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 16px;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 26px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:active { transform: scale(0.985); }

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 28px rgba(255, 149, 88, 0.32);
}

.btn--primary:hover { background: var(--primary-deep); }

.btn--ghost {
  background: var(--paper);
  border: 1px solid var(--line);
}

.hero__note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--faint);
}

/* 手机示意 */
.hero__art { display: flex; justify-content: center; }

.phone {
  width: 300px;
  border-radius: 34px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 18px 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transform: rotate(-2deg);
}

.phone__bar {
  width: 76px;
  height: 6px;
  border-radius: 3px;
  background: #ece6de;
  margin: 0 auto 6px;
}

.phone__hero {
  background: var(--primary-soft);
  border-radius: 18px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.phone__greeting { font-weight: 700; font-size: 15px; }

.phone__search {
  font-size: 12px;
  color: var(--faint);
  background: #fff;
  border-radius: 14px;
  padding: 7px 12px;
}

.phone__quick {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
}

.phone__quick span {
  background: #fbf8f2;
  border-radius: 12px;
  padding: 10px 4px;
  line-height: 1.5;
}

.phone__card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
}

.phone__card--soft { background: var(--secondary-soft); border-color: transparent; }

.phone__badge {
  align-self: flex-start;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary-deep);
}

.phone__meta { font-size: 11px; color: var(--muted); }

/* ---------------- 区块 ---------------- */
.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 32px;
}

.section--soft {
  max-width: none;
  background: #fdf9f2;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section--soft > * {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 28px;
  letter-spacing: -0.6px;
}

.section__desc {
  margin: 0 0 32px;
  max-width: 46em;
  color: var(--muted);
  font-size: 15px;
}

.section__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.tag-demo {
  flex-shrink: 0;
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 12px;
  background: #fff4e0;
  color: #8a5a1f;
  border: 1px solid #f2dfc0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}

.card__icon { font-size: 24px; }

.card h3 {
  margin: 12px 0 6px;
  font-size: 16px;
}

.card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

/* ---------------- 演示 ---------------- */
.demo {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  align-items: stretch;
}

.demo__link {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.demo__link:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.demo__thumb {
  width: 74px;
  height: 74px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-soft), var(--secondary-soft));
  flex-shrink: 0;
}

.demo__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.demo__body span { font-size: 13px; color: var(--muted); }

.demo__arrow {
  font-size: 20px;
  color: var(--primary-deep);
}

.demo__hint {
  background: #fff4e0;
  border: 1px solid #f2dfc0;
  border-radius: 18px;
  padding: 18px;
  font-size: 13px;
  color: #7c5420;
}

.demo__hint p { margin: 0; }

.shots {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
  margin-top: 22px;
}

.shots figure {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
}

.shots img {
  display: block;
  width: 100%;
  height: auto;
}

.shots figcaption {
  padding: 12px 16px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------------- 步骤 ---------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.step {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}

.step__num {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  font-weight: 700;
  font-size: 14px;
}

.step h3 { margin: 12px 0 6px; font-size: 16px; }

.step p { margin: 0; font-size: 14px; color: var(--muted); }

.notice {
  margin-top: 22px;
  padding: 16px 20px;
  border-radius: 14px;
  background: #f4f0e9;
  font-size: 13px;
  color: var(--muted);
}

/* ---------------- 技术 ---------------- */
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.fact {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fact__k { font-size: 12px; color: var(--faint); }

.fact__v { font-size: 14px; font-weight: 600; }

.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 28px 32px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.foot__links { display: flex; gap: 18px; }

.foot__links a:hover { color: var(--ink); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .hero__art { order: -1; }
  .phone { transform: none; }
  .demo, .shots { grid-template-columns: 1fr; }
  .nav__links { gap: 14px; font-size: 13px; }
  .nav { padding: 12px 18px; }
  .section { padding: 48px 20px; }
  .section__head { flex-direction: column; }
}