/* 淘闲置官网 — 设计令牌对齐 App theme.js */
:root {
  --color-primary: #FFD100;
  --color-primary-active: #D3AD00;
  --color-primary-soft: rgba(255, 209, 0, 0.12);
  --color-primary-disabled: #FBECBF;
  --color-text: #1a1a1a;
  --color-text-secondary: #4E5969;
  --color-text-muted: #86909C;
  --color-bg: #FAFBFC;
  --color-bg-alt: #F2F3F5;
  --color-surface: #FFFFFF;
  --color-border: rgba(0, 0, 0, 0.06);
  --color-success: #00B42A;
  --color-danger: #F53F3F;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
  --font-sans: 'DM Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --header-h: 72px;
  --container: min(1120px, calc(100% - 48px));
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: var(--container); margin-inline: auto; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text);
}
.btn--primary:hover {
  background: var(--color-primary-active);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 209, 0, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-primary-active);
  background: var(--color-primary-soft);
}

.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 14px 28px; font-size: 16px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(250, 251, 252, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.nav-desktop {
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.nav-desktop a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}
.nav-desktop a:hover { color: var(--color-text); }

.header-cta { margin-left: 8px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-mobile {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-md);
}
.nav-mobile[hidden] { display: none; }
.nav-mobile a {
  padding: 12px 8px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
}
.nav-mobile a:hover { background: var(--color-bg-alt); color: var(--color-text); }

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

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(255, 209, 0, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(211, 173, 0, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, #FFFDF5 0%, var(--color-bg) 100%);
  z-index: -1;
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary-active);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary-active);
}

.hero-desc {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.platform-tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}

/* Phone mockup */
.hero-visual { position: relative; display: flex; justify-content: center; }

.phone-mockup {
  width: 280px;
  padding: 12px;
  background: #1a1a1a;
  border-radius: 36px;
  box-shadow: var(--shadow-lg);
}

.phone-screen {
  background: var(--color-surface);
  border-radius: 28px;
  overflow: hidden;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}

.mock-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}
.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}
.mock-title { font-size: 14px; font-weight: 600; }

.mock-tabs {
  display: flex;
  gap: 16px;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.mock-tabs .active {
  color: var(--color-primary-active);
  font-weight: 600;
  border-bottom: 2px solid var(--color-primary-active);
  padding-bottom: 4px;
}

.mock-cards {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 8px 12px;
}
.mock-card {
  border-radius: var(--radius-sm);
  min-height: 100px;
}
.mock-card--1 { background: linear-gradient(135deg, #FFE566, #FFD100); }
.mock-card--2 { background: linear-gradient(135deg, #E8F4FF, #B8D4F0); }
.mock-card--3 { background: linear-gradient(135deg, #FFF0E8, #FFD4B8); }
.mock-card--4 { background: linear-gradient(135deg, #F0F0F0, #D8D8D8); }

.mock-tabbar {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 10px 8px 14px;
  border-top: 1px solid var(--color-border);
  font-size: 10px;
  color: var(--color-text-muted);
}
.mock-tabbar .on { color: var(--color-text); font-weight: 600; }
.mock-tabbar .plus {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-top: -20px;
}

.float-chip {
  position: absolute;
  padding: 8px 16px;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  animation: float 4s ease-in-out infinite;
}
.float-chip--1 { top: 10%; right: 0; animation-delay: 0s; }
.float-chip--2 { bottom: 20%; left: -10%; animation-delay: 1.5s; }

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

/* Stats */
.stats {
  padding: 48px 0;
  border-block: 1px solid var(--color-border);
  background: var(--color-surface);
}

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

.stat-item {
  text-align: center;
  padding: 16px;
}
.stat-item strong {
  display: block;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}
.stat-item span {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Sections */
.section { padding: 96px 0; }
.section--alt { background: var(--color-bg-alt); }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-active);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-desc {
  color: var(--color-text-secondary);
  font-size: 17px;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  border-radius: var(--radius-md);
  color: var(--color-primary-active);
  margin-bottom: 20px;
}
.feature-icon svg { width: 24px; height: 24px; }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.step-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--color-border);
}
.step-num {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-active);
  margin-bottom: 16px;
}
.step-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.role-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.role-card {
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}
.role-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.role-card li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--color-text-secondary);
}
.role-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary-active);
}

/* Split section */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-content h2 {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.split-content > p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--color-text-secondary);
}
.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.community-preview {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.preview-post {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}
.preview-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-active));
  flex-shrink: 0;
}
.preview-body { flex: 1; }
.preview-line {
  height: 10px;
  background: var(--color-bg-alt);
  border-radius: 4px;
  margin-bottom: 8px;
}
.preview-line--short { width: 40%; }
.preview-img {
  height: 120px;
  background: linear-gradient(135deg, #E8F4FF, #FFD10033);
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.preview-live {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: #1a1a1a;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}
.live-badge {
  background: var(--color-danger);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}

/* Trust */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-item {
  padding: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
.trust-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.trust-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-slogan { font-size: 14px; }

.footer-links h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  font-size: 14px;
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-primary); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
}
.footer-domain { color: rgba(255,255,255,0.4); }
.footer-beian {
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-beian:hover { color: var(--color-primary); }

/* Sub pages */
.page-hero {
  padding: calc(var(--header-h) + 48px) 0 48px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}
.page-hero h1 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  margin-bottom: 12px;
}
.page-hero p { color: var(--color-text-secondary); }

.page-content {
  padding: 64px 0 96px;
  max-width: 720px;
  margin: 0 auto;
}
.page-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 40px 0 12px;
}
.page-content h2:first-child { margin-top: 0; }
.page-content p, .page-content li {
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.75;
}
.page-content ul { padding-left: 20px; margin-bottom: 16px; }
.page-content li { list-style: disc; }
.page-content a { color: var(--color-primary-active); text-decoration: underline; }

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-chip { animation: none; }
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .split-section { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .phone-mockup { width: 240px; }
  .float-chip { display: none; }
  .feature-grid,
  .steps-grid,
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  :root { --header-h: 64px; }
  .nav-desktop, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding-bottom: 48px; }
  .section { padding: 64px 0; }
  .feature-grid,
  .steps-grid,
  .trust-grid,
  .role-cards,
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}