/* 本草修心官网 — 对齐 design/tokens.css */
:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-primary: #b8855a;
  --color-primary-dark: #9a6d45;
  --color-primary-light: #f0e8de;
  --color-accent-green: #7a9e7e;
  --color-accent-green-dark: #5f8263;
  --color-cinnabar: #b84a3d;
  --color-text-primary: #2c2c2c;
  --color-text-secondary: #6b6b6b;
  --color-text-muted: #9a9a9a;
  --color-border: #e8e4df;
  --color-divider: #f0ece6;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: -apple-system, "PingFang SC", "Helvetica Neue", "Inter", sans-serif;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 24px rgba(44, 44, 44, 0.08);
  --shadow-lg: 0 12px 48px rgba(44, 44, 44, 0.12);
  --max-width: 1120px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(100% - 48px, var(--max-width));
  margin-inline: auto;
}

/* ── Header ── */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(250, 248, 245, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.site-header.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent-green), var(--color-primary));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.85rem;
  font-family: var(--font-serif);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-desktop a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill, 999px);
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(184, 133, 90, 0.35);
}

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

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  margin: 5px 0;
  transition: 0.2s;
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: var(--header-h) 0 0;
  background: var(--color-bg);
  padding: 24px;
  z-index: 99;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  padding: 14px 0;
  font-size: 1.05rem;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text-secondary);
}

/* ── Hero ── */
.hero {
  padding: calc(var(--header-h) + 64px) 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(122, 158, 126, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-primary-light);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-green);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.25;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent-green-dark);
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 32px;
}

.hero-stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-primary);
}

.hero-stat span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Phone mockup */
.phone-mockup {
  position: relative;
  justify-self: center;
  width: min(100%, 300px);
}

.phone-frame {
  background: var(--color-surface);
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.phone-screen {
  border-radius: 28px;
  overflow: hidden;
  background: var(--color-bg);
  aspect-ratio: 9/19;
}

.phone-notch {
  height: 28px;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-notch::after {
  content: "";
  width: 80px;
  height: 6px;
  background: var(--color-divider);
  border-radius: 99px;
}

.mock-app {
  padding: 16px;
}

.mock-plaque {
  text-align: center;
  padding: 12px 8px;
  background: linear-gradient(180deg, #f5efe6 0%, #ebe3d6 100%);
  border: 1px solid #d4c4a8;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.mock-plaque small {
  display: block;
  font-size: 0.65rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.mock-plaque strong {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-cinnabar);
}

.mock-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
}

.mock-card h4 {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.mock-card p {
  font-size: 0.8rem;
  line-height: 1.5;
}

.mock-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 12px;
}

.mock-step {
  text-align: center;
  padding: 8px 4px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  font-size: 0.65rem;
  color: var(--color-primary-dark);
}

.mock-step.done {
  background: rgba(184, 74, 61, 0.12);
  color: var(--color-cinnabar);
}

.mock-tabbar {
  display: flex;
  justify-content: space-around;
  padding: 10px 0 4px;
  border-top: 1px solid var(--color-divider);
  margin-top: 12px;
}

.mock-tabbar span {
  font-size: 0.55rem;
  color: var(--color-text-muted);
  text-align: center;
}

.mock-tabbar span.active {
  color: var(--color-primary);
}

.phone-glow {
  position: absolute;
  inset: 10% -20%;
  background: radial-gradient(circle, rgba(184, 133, 90, 0.15), transparent 65%);
  z-index: -1;
}

/* ── Sections ── */
section {
  padding: 80px 0;
}

.section-label {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-green-dark);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-bottom: 48px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.25s, transform 0.25s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-icon.green { background: rgba(122, 158, 126, 0.15); }
.feature-icon.brown { background: rgba(184, 133, 90, 0.15); }
.feature-icon.red { background: rgba(184, 74, 61, 0.12); }
.feature-icon.gold { background: rgba(212, 154, 106, 0.15); }

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* How it works */
.how-section {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-item {
  position: relative;
  padding-top: 48px;
}

.step-item::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-primary-light);
  font-weight: 600;
}

.step-item h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* Product tabs */
.tabs-showcase {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}

.tab-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tab-btn {
  text-align: left;
  padding: 16px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  background: transparent;
  cursor: pointer;
  transition: 0.2s;
  font-family: inherit;
}

.tab-btn:hover {
  background: var(--color-primary-light);
}

.tab-btn.active {
  background: var(--color-surface);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.tab-btn strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 4px;
}

.tab-btn span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.tab-panel {
  display: none;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 40px;
  border: 1px solid var(--color-border);
  min-height: 320px;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.tab-panel h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.tab-panel p {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  max-width: 520px;
}

.tab-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-tags span {
  padding: 6px 14px;
  background: var(--color-primary-light);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-primary-dark);
}

/* Stats band */
.stats-band {
  background: linear-gradient(135deg, #5f8263 0%, #7a9e7e 50%, #b8855a 100%);
  color: #fff;
  padding: 56px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stats-grid strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.4rem;
  margin-bottom: 4px;
}

.stats-grid span {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.price-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  position: relative;
}

.price-card.featured::before {
  content: "推荐";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 14px;
  border-radius: 999px;
}

.price-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.price-amount small {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
}

.price-period {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.price-features {
  list-style: none;
  flex: 1;
  margin-bottom: 24px;
}

.price-features li {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 8px 0;
  padding-left: 22px;
  position: relative;
}

.price-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent-green);
  font-weight: 600;
}

/* B2B */
.b2b-section {
  background: var(--color-primary-light);
}

.b2b-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.b2b-list {
  list-style: none;
  margin-top: 24px;
}

.b2b-list li {
  padding: 12px 0;
  padding-left: 28px;
  position: relative;
  color: var(--color-text-secondary);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.b2b-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--color-accent-green);
  font-size: 0.6rem;
  top: 16px;
}

.b2b-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.b2b-card h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.b2b-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.b2b-metric {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
}

.b2b-metric strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-accent-green-dark);
}

.b2b-metric span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* CTA */
.cta-section {
  text-align: center;
  padding: 100px 0;
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.qr-placeholder {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
}

.qr-box {
  width: 120px;
  height: 120px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  background: #2c2c2c;
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 32px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
}

.disclaimer-inline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 24px;
  padding: 16px;
  background: var(--color-divider);
  border-radius: var(--radius-md);
  line-height: 1.6;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .b2b-grid,
  .tabs-showcase {
    grid-template-columns: 1fr;
  }

  .features-grid,
  .steps-row,
  .stats-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .phone-mockup {
    order: -1;
    width: 260px;
    margin-inline: auto;
  }

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

@media (max-width: 640px) {
  .nav-desktop,
  .nav-actions .btn-outline {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .features-grid,
  .steps-row,
  .stats-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
  }

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

  section {
    padding: 56px 0;
  }
}