:root {
  --bg: #f6f6f6;
  --bg-warm: #f7f4ef;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --text: #231815;
  --text-muted: rgba(35, 24, 21, 0.52);
  --text-soft: rgba(35, 24, 21, 0.36);
  --brand: #ff3300;
  --brand-light: #ff8245;
  --brand-glow: #ffd6cc;
  --line: rgba(35, 24, 21, 0.08);
  --shadow: 0 24px 80px rgba(35, 24, 21, 0.08);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --nav-h: 72px;
  --font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 130, 69, 0.18), transparent 32%),
    radial-gradient(circle at 88% 12%, rgba(255, 214, 204, 0.55), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(255, 51, 0, 0.08), transparent 40%),
    linear-gradient(180deg, #fafafa 0%, var(--bg) 42%, #f2f1f1 100%);
}

.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  z-index: -1;
  pointer-events: none;
  animation: float 14s ease-in-out infinite;
}

.orb-a {
  width: 420px;
  height: 420px;
  top: -80px;
  right: -120px;
  background: rgba(255, 130, 69, 0.28);
}

.orb-b {
  width: 320px;
  height: 320px;
  bottom: 12%;
  left: -100px;
  background: rgba(255, 214, 204, 0.65);
  animation-delay: -4s;
}

.orb-c {
  width: 240px;
  height: 240px;
  top: 42%;
  right: 8%;
  background: rgba(255, 51, 0, 0.12);
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(0, -24px, 0) scale(1.04); }
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1120px, calc(100% - 32px));
  height: var(--nav-h);
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 12px 40px rgba(35, 24, 21, 0.06);
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand img {
  width: 28px;
  height: 28px;
}

.brand span {
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--text-muted);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 112px;
  height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(112deg, var(--brand) 0%, var(--brand-light) 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 10px 24px rgba(255, 51, 0, 0.24);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(255, 51, 0, 0.28);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 72px) 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 22px;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(255, 51, 0, 0.12);
  animation: pulse 2.4s ease infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.75; }
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 700;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(112deg, var(--brand) 0%, var(--brand-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  margin: 24px 0 0;
  max-width: 560px;
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-muted);
}

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

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(112deg, var(--brand) 0%, var(--brand-light) 100%);
  box-shadow: 0 16px 36px rgba(255, 51, 0, 0.22);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  color: var(--text);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-muted);
}

.phone-stage {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 620px;
}

.phone-shell {
  position: relative;
  width: min(100%, 340px);
  aspect-ratio: 0.52;
  border-radius: 42px;
  padding: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.68));
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
  animation: phoneFloat 6s ease-in-out infinite;
}

@keyframes phoneFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.phone-screen {
  height: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, #faf8f6 100%);
  border: 1px solid rgba(35, 24, 21, 0.06);
  position: relative;
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 92px;
  height: 24px;
  border-radius: 999px;
  background: rgba(35, 24, 21, 0.08);
}

.phone-top {
  padding: 48px 20px 18px;
}

.phone-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(246, 246, 246, 0.95);
  border: 1px solid rgba(35, 24, 21, 0.05);
  font-size: 13px;
  color: var(--text-soft);
}

.phone-search img {
  width: 16px;
  height: 16px;
  opacity: 0.45;
}

.phone-tabs {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.phone-tabs span {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  border-radius: 14px;
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.72);
}

.phone-tabs span.active {
  color: var(--text);
  background: #fff;
  box-shadow: 0 8px 20px rgba(35, 24, 21, 0.06);
}

.phone-cards {
  padding: 16px 20px 24px;
  display: grid;
  gap: 12px;
}

.mini-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(35, 24, 21, 0.05);
  box-shadow: 0 10px 24px rgba(35, 24, 21, 0.04);
  animation: cardIn 0.8s ease both;
}

.mini-card:nth-child(2) { animation-delay: 0.15s; }
.mini-card:nth-child(3) { animation-delay: 0.3s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.mini-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.mini-card-title {
  font-size: 14px;
  font-weight: 600;
}

.mini-card-price {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
}

.mini-card-desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.phone-tabbar {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  display: flex;
  justify-content: space-around;
  padding: 12px 10px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 30px rgba(35, 24, 21, 0.08);
}

.phone-tabbar span {
  font-size: 11px;
  color: var(--text-soft);
}

.phone-tabbar span.active {
  color: var(--brand);
  font-weight: 600;
}

.floating-chip {
  position: absolute;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 16px 40px rgba(35, 24, 21, 0.08);
  font-size: 13px;
  animation: chipFloat 5s ease-in-out infinite;
}

.floating-chip strong {
  display: block;
  font-size: 18px;
  margin-bottom: 4px;
}

.chip-a {
  top: 8%;
  left: -4%;
}

.chip-b {
  right: -2%;
  bottom: 18%;
  animation-delay: -2s;
}

@keyframes chipFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-kicker {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.section-head p {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-muted);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: -24px;
  margin-bottom: 24px;
}

.stat-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 40px rgba(35, 24, 21, 0.05);
}

.stat-card strong {
  display: block;
  font-size: 34px;
  letter-spacing: -0.03em;
}

.stat-card span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

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

.feature-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 18px 48px rgba(35, 24, 21, 0.05);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(35, 24, 21, 0.08);
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 51, 0, 0.12), rgba(255, 130, 69, 0.18));
  color: var(--brand);
  font-size: 22px;
  margin-bottom: 18px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.feature-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-muted);
}

.feature-card.wide {
  grid-column: span 2;
}

.dual-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.panel {
  padding: 34px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.panel::after {
  content: "";
  position: absolute;
  inset: auto -10% -30% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 130, 69, 0.18), transparent 70%);
}

.panel-label {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 51, 0, 0.08);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.panel h3 {
  margin: 16px 0 12px;
  font-size: 30px;
  letter-spacing: -0.03em;
}

.panel p {
  margin: 0;
  max-width: 420px;
  line-height: 1.75;
  color: var(--text-muted);
}

.panel-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.panel-list div {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(246, 246, 246, 0.92);
  font-size: 14px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  counter-reset: flow;
}

.flow-step {
  position: relative;
  padding: 24px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.95);
  min-height: 180px;
}

.flow-step::before {
  counter-increment: flow;
  content: counter(flow, decimal-leading-zero);
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(112deg, var(--brand), var(--brand-light));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 18px;
}

.flow-step h4 {
  margin: 0 0 8px;
  font-size: 18px;
}

.flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.marquee-wrap {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.95);
  padding: 22px 0;
}

.marquee-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.marquee-track span {
  padding: 12px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14px;
  white-space: nowrap;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.cta {
  margin: 24px 0 96px;
  padding: 56px;
  border-radius: 32px;
  background: linear-gradient(135deg, #231815 0%, #3a2d28 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  overflow: hidden;
  position: relative;
}

.cta::before {
  content: "";
  position: absolute;
  inset: -20% auto auto -10%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 51, 0, 0.35), transparent 70%);
}

.cta h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 40px);
}

.cta p {
  margin: 0;
  max-width: 520px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
}

.footer {
  padding: 28px 0 40px;
  color: var(--text-soft);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .dual-panel,
  .feature-grid,
  .stats-row,
  .flow {
    grid-template-columns: 1fr;
  }

  .feature-card.wide {
    grid-column: auto;
  }

  .nav-links {
    display: none;
  }

  .phone-stage {
    min-height: auto;
    margin-top: 24px;
  }

  .chip-a,
  .chip-b {
    display: none;
  }

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