/* 灵栖官网 — 设计系统 */
:root {
  --color-primary: #ab47bc;
  --color-primary-dark: #8e24aa;
  --color-primary-light: rgba(171, 71, 188, 0.1);
  --color-primary-mid: rgba(171, 71, 188, 0.65);
  --color-primary-glow: rgba(171, 71, 188, 0.25);
  --color-bg: #f8f7fa;
  --color-bg-warm: #faf9fc;
  --color-surface: rgba(255, 255, 255, 0.92);
  --color-surface-solid: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #5c5c7a;
  --color-text-muted: #9494ad;
  --color-border: rgba(171, 71, 188, 0.12);
  --color-border-strong: rgba(171, 71, 188, 0.22);
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Menlo", monospace;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --shadow-soft: 0 4px 24px rgba(26, 26, 46, 0.04);
  --shadow-card: 0 8px 40px rgba(171, 71, 188, 0.1);
  --shadow-lifted: 0 20px 60px rgba(171, 71, 188, 0.16);
  --shadow-glow: 0 0 80px rgba(171, 71, 188, 0.15);
  --header-height: 72px;
  --container: 1200px;
  --section-gap: 120px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(var(--container), 100% - 64px);
  margin-inline: auto;
}

/* 背景装饰 */
.page-texture {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(171, 71, 188, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(147, 51, 234, 0.03) 0%, transparent 50%);
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow-1 {
  width: 700px; height: 700px;
  background: rgba(171, 71, 188, 0.12);
  top: -200px; left: -200px;
  animation: float-1 14s ease-in-out infinite;
}

.bg-glow-2 {
  width: 550px; height: 550px;
  background: rgba(147, 51, 234, 0.08);
  bottom: 20%; right: -180px;
  animation: float-2 12s ease-in-out infinite;
}

.bg-glow-3 {
  width: 400px; height: 400px;
  background: rgba(171, 71, 188, 0.06);
  top: 50%; left: 40%;
  animation: float-3 16s ease-in-out infinite;
}

@keyframes float-1 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(60px, 80px); }
}
@keyframes float-2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-50px, -60px); }
}
@keyframes float-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -40px) scale(1.1); }
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(248, 247, 250, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
  background: rgba(248, 247, 250, 0.92);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-soft);
}

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

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

.nav-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-surface-solid);
  color: var(--color-primary);
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 4px 16px var(--color-primary-glow);
  border: 1px solid var(--color-border);
}

.nav-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  font-size: 15px;
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 1px;
}

.nav-links a:not(.nav-cta):hover {
  color: var(--color-primary);
}

.nav-links a:not(.nav-cta):hover::after {
  transform: scaleX(1);
}

.nav-cta {
  padding: 10px 24px !important;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff !important;
  border-radius: var(--radius-full);
  font-weight: 600;
  box-shadow: 0 4px 16px var(--color-primary-glow);
  transition: transform var(--transition), box-shadow var(--transition) !important;
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--color-primary-glow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  background: rgba(248, 247, 250, 0.97);
  backdrop-filter: blur(20px);
  padding: 24px 32px;
  flex-direction: column;
  gap: 4px;
  border-bottom: 1px solid var(--color-border);
  z-index: 99;
}

.mobile-menu[hidden] { display: none !important; }

.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.mobile-menu a:last-child { border-bottom: none; }

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 60px) 0 100px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--color-primary-mid);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.hero-title-main {
  font-family: var(--font-serif);
  font-size: clamp(56px, 7vw, 88px);
  font-weight: 500;
  letter-spacing: 16px;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--color-text) 30%, var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title-sub {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 300;
  letter-spacing: 8px;
  color: var(--color-text-muted);
}

.hero-slogan {
  font-family: var(--font-serif);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 300;
  letter-spacing: 5px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: var(--radius-full);
  font-size: 16px;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 8px 28px var(--color-primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(171, 71, 188, 0.35);
}

.btn-ghost {
  background: var(--color-surface-solid);
  color: var(--color-text);
  border: 1.5px solid var(--color-border-strong);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.hero-metrics {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

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

.metric-value {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 2px;
}

.metric-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 真机截图展示 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px 0;
}

.device-showcase {
  position: relative;
  width: min(320px, 80vw);
}

.device-glow {
  position: absolute;
  inset: 10% -15%;
  background: radial-gradient(ellipse at center, rgba(171, 71, 188, 0.22) 0%, transparent 70%);
  filter: blur(24px);
  z-index: 0;
  pointer-events: none;
}

.device-frame {
  position: relative;
  z-index: 1;
  padding: 10px;
  border-radius: 44px;
  background: linear-gradient(145deg, #2a2a3e 0%, #12121f 50%, #1e1e30 100%);
  box-shadow:
    0 40px 80px rgba(26, 26, 46, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 0 60px rgba(171, 71, 188, 0.15);
}

/* 真实截图已含状态栏，无需额外灵动岛 */
.device-island { display: none; }

.device-screen {
  border-radius: 34px;
  overflow: hidden;
  background: #f5f5f5;
  line-height: 0;
}

.device-screenshot {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 390 / 844;
  object-fit: cover;
  object-position: top center;
}

/* 通用区块 */
.section {
  position: relative;
  z-index: 1;
  padding: var(--section-gap) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
  max-width: 640px;
  margin-inline: auto;
}

.section-tag {
  display: inline-block;
  padding: 8px 20px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.5vw, 44px);
  font-weight: 500;
  letter-spacing: 6px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 亮点 */
.highlights { padding-top: 0; margin-top: -40px; }

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.highlight-card {
  padding: 36px 32px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.highlight-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.highlight-icon {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(171,71,188,0.18));
  border-radius: 16px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
}

.highlight-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.highlight-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* 功能卡片 */
.features { background: linear-gradient(180deg, transparent, var(--color-primary-light) 120%); }

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

.feature-card {
  position: relative;
  padding: 32px 28px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-border-strong);
}

.feature-card:hover::before { opacity: 1; }

/* 生辰八字占双列；11 张卡片 + 1 双列 = 12 格，恰好 3 行 × 4 列 */
.feature-card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--color-surface-solid) 60%, rgba(171, 71, 188, 0.06));
}

.feature-num {
  position: absolute;
  top: 16px; right: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary-mid);
  letter-spacing: 1px;
}

.feature-icon {
  width: 44px; height: 44px;
  color: var(--color-primary);
  margin-bottom: 18px;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.feature-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.feature-tags li {
  font-size: 12px;
  padding: 4px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 500;
}

/* 体验步骤 */
.showcase { background: var(--color-bg-warm); }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  padding: 36px 28px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.step-num {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: 16px;
}

.step-card h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 4px;
  margin-bottom: 12px;
}

.step-card > p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 24px;
}

.step-visual {
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border);
}

.step-form-mock { display: flex; flex-direction: column; gap: 10px; }

.step-form-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--color-text-muted);
}

.step-form-row span { width: 40px; text-align: right; }

.step-form-field {
  flex: 1;
  height: 24px;
  background: var(--color-surface-solid);
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

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

.step-bazi-mock .pillar {
  padding: 10px 4px;
  background: var(--color-surface-solid);
  border-radius: 8px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.step-daily-mock { text-align: center; }

.step-daily-score {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 12px;
}

.step-daily-score small {
  font-size: 16px;
  color: var(--color-text-muted);
}

.step-daily-tags {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.step-daily-tags span {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
}

/* 理念 */
.about {
  background: linear-gradient(180deg, var(--color-bg-warm) 0%, var(--color-bg) 100%);
}

.about-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.about-header .section-tag { margin-bottom: 20px; }

.about-header .section-title {
  margin-bottom: 28px;
}

.about-intro {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-lead {
  font-size: 18px;
  color: var(--color-text);
  line-height: 1.9;
}

.about-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.9;
}

.about-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: stretch;
}

.about-highlights {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 0;
  height: 100%;
}

.about-highlights li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 22px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  min-height: 0;
}

.about-highlights li:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.about-highlight-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(171, 71, 188, 0.16));
  border-radius: 12px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.about-highlight-text strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.about-highlight-text span {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.about-visual {
  display: flex;
  min-height: 100%;
}

/* 禅语轮播 */
.zen-carousel {
  position: relative;
  flex: 1;
  min-height: 360px;
  width: 100%;
}

.zen-card {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 40px 72px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lifted);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
}

.zen-card--active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.zen-ornament {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  margin: 0 auto 32px;
}

.zen-quote {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 400;
  letter-spacing: 4px;
  line-height: 1.9;
  text-align: center;
  color: var(--color-text);
  border: none;
}

.zen-author {
  display: block;
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 28px;
}

.zen-stamp {
  position: absolute;
  bottom: 32px; right: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 12px;
  border: 2px solid rgba(171, 71, 188, 0.25);
  border-radius: 4px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--color-primary);
  letter-spacing: 3px;
  opacity: 0.5;
  transform: rotate(-8deg);
  z-index: 2;
}

.zen-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.zen-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary-light);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.zen-dot.active {
  background: var(--color-primary);
  transform: scale(1.3);
}

/* FAQ */
.faq-inner { max-width: 720px; margin-inline: auto; }

.faq-list { display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: var(--color-surface-solid);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item[open] {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-soft);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text);
  transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover { color: var(--color-primary); }

.faq-item p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 下载 */
.download {
  padding-bottom: var(--section-gap);
  background: linear-gradient(180deg, transparent 0%, var(--color-primary-light) 100%);
}

.download-wrap {
  position: relative;
}

.download-wrap::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -40%);
  width: min(640px, 90%);
  height: 280px;
  background: radial-gradient(ellipse, rgba(171, 71, 188, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.download-wrap .section-header,
.download-cards {
  position: relative;
  z-index: 1;
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 680px;
  margin-inline: auto;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 28px;
  background: var(--color-surface-solid);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  text-align: left;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

a.download-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
}

.download-card--wechat { cursor: default; }

.download-icon {
  flex-shrink: 0;
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.download-icon svg { width: 28px; height: 28px; }

.ios-icon { background: #1a1a2e; color: #fff; }
.wechat-icon { background: #07c160; color: #fff; }

.download-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.download-platform {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.download-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-text);
}

.download-hint { font-size: 13px; color: var(--color-text-secondary); }

.download-arrow {
  font-size: 20px;
  color: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}

a.download-card:hover .download-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* 页脚 */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 64px 0 32px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-warm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}

.footer-logo {
  display: block;
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 6px;
  color: var(--color-text);
}

.footer-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-primary-mid);
  margin-top: 2px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-links-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-links-col a,
.footer-links-col span {
  display: block;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 0;
  transition: color var(--transition);
}

.footer-links-col a:hover { color: var(--color-primary); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-disclaimer {
  font-size: 12px;
  color: var(--color-text-muted);
  opacity: 0.8;
  margin-bottom: 12px;
}

.footer-copy {
  font-size: 12px;
  color: var(--color-text-muted);
  opacity: 0.5;
}

/* 入场动画 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
  transition-delay: var(--delay, 0s);
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .hero-desc { margin-inline: auto; }
  .hero-actions, .hero-metrics { justify-content: center; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card--featured { grid-column: span 2; }
  .highlight-grid, .steps-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .about-body { grid-template-columns: 1fr; gap: 32px; }
  .about-highlights { grid-template-columns: repeat(2, 1fr); }
  .zen-carousel { min-height: 300px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 80px;
    --header-height: 64px;
  }

  .container { width: min(var(--container), 100% - 40px); }

  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .mobile-menu:not([hidden]) { display: flex; }

  .hero { padding-bottom: 60px; }
  .hero-title-main { letter-spacing: 10px; }
  .hero-metrics { gap: 24px; }
  .device-showcase { width: min(260px, 72vw); }

  .feature-grid { grid-template-columns: 1fr; }
  .feature-card--featured { grid-column: span 1; }

  .about-highlights { grid-template-columns: 1fr; }
  .zen-carousel { min-height: 280px; }

  .download-cards { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 80px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}