/* ===== 全局重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --orange: #FF6B35;
  --orange-light: #FF8C5A;
  --bg: #0A0A0A;
  --bg2: #111111;
  --bg3: #1A1A1A;
  --border: rgba(255,255,255,0.08);
  --text: #F0F0F0;
  --text-sub: #888;
  --radius: 16px;
  --radius-sm: 10px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-icon { width: 32px; height: 32px; border-radius: 8px; }
.nav-title { font-size: 17px; font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-sub);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-toggle:hover { border-color: var(--orange); color: var(--orange); }

.btn-nav {
  background: var(--orange);
  color: white;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}
.btn-nav:hover { background: var(--orange-light); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  padding: 100px 24px 60px;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-content { flex: 1; }
.hero-visual { flex: 0 0 320px; display: flex; justify-content: center; }

.hero-badge {
  display: inline-block;
  background: rgba(255,107,53,0.15);
  border: 1px solid rgba(255,107,53,0.3);
  color: var(--orange);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--orange), #FF3CAC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-buttons { margin-bottom: 24px; }

.btn-appstore {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #000;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: white;
  padding: 12px 22px;
  border-radius: 12px;
  transition: all 0.2s;
}
.btn-appstore:hover { border-color: rgba(255,255,255,0.5); transform: translateY(-1px); }
.btn-small { font-size: 11px; opacity: 0.8; }
.btn-large { font-size: 18px; font-weight: 600; line-height: 1.2; }

.hero-rating { font-size: 14px; color: var(--text-sub); }
.stars { color: #FFD700; margin-right: 6px; }

/* Phone Mockup */
.phone-mockup {
  width: 280px;
  height: 580px;
  background: #1C1C1E;
  border-radius: 46px;
  border: 8px solid #2C2C2E;
  box-shadow: 0 40px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05);
  overflow: hidden;
  position: relative;
}
.phone-screen { width: 100%; height: 100%; overflow: hidden; }
.phone-screen .screenshot { width: 100%; height: 100%; object-fit: cover; }

/* 无截图时的占位 */
.phone-screen:not(:has(img[src*="screenshot"])) {
  background: linear-gradient(160deg, #1A1A2E, #16213E, #0F3460);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Section 公共 ===== */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-title {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 10px;
}
.section-sub {
  text-align: center;
  color: var(--text-sub);
  font-size: 16px;
  margin-bottom: 56px;
}

/* ===== 功能卡片 ===== */
.features {
  padding: 100px 0;
  background: var(--bg2);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover { border-color: rgba(255,107,53,0.3); transform: translateY(-3px); }
.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { color: var(--text-sub); font-size: 15px; line-height: 1.65; }

/* ===== 语音演示 ===== */
.voice-demo {
  padding: 100px 0;
  background: var(--bg);
}
.voice-bubbles {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.bubble {
  padding: 18px 22px;
  border-radius: var(--radius);
  max-width: 82%;
  position: relative;
}
.bubble-left {
  align-self: flex-start;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.bubble-right {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(255,107,53,0.15), rgba(255,60,172,0.1));
  border: 1px solid rgba(255,107,53,0.2);
  border-bottom-right-radius: 4px;
}
.bubble-time {
  font-size: 11px;
  font-weight: 600;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.bubble-text { font-size: 15px; line-height: 1.6; }

/* ===== 订阅定价 ===== */
.pricing {
  padding: 100px 0;
  background: var(--bg2);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  align-items: start;
  margin-bottom: 24px;
}
.pricing-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: transform 0.2s;
}
.pricing-card:hover { transform: translateY(-3px); }
.pricing-featured {
  border-color: var(--orange);
  box-shadow: 0 0 40px rgba(255,107,53,0.12);
  transform: scale(1.02);
}
.pricing-featured:hover { transform: scale(1.02) translateY(-3px); }

.plan-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--orange);
  color: white;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.plan-name { font-size: 14px; font-weight: 600; color: var(--text-sub); margin-bottom: 12px; }
.plan-price { margin-bottom: 6px; }
.price-original {
  font-size: 14px;
  color: var(--text-sub);
  text-decoration: line-through;
  margin-right: 6px;
}
.price-num { font-size: 40px; font-weight: 700; }
.price-period { font-size: 14px; color: var(--text-sub); }
.price-note { font-size: 13px; color: var(--orange); margin-bottom: 24px; }

.plan-features { list-style: none; margin-bottom: 28px; }
.plan-features li { font-size: 14px; padding: 7px 0; border-bottom: 1px solid var(--border); }
.plan-features li:last-child { border-bottom: none; }
.plan-features li.yes { color: var(--text); }
.plan-features li.no { color: var(--text-sub); }

.btn-plan {
  display: block;
  text-align: center;
  padding: 13px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-pro {
  background: var(--orange);
  color: white;
}
.btn-pro:hover { background: var(--orange-light); }
.btn-free {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-free:hover { border-color: rgba(255,255,255,0.3); }

.pricing-note { text-align: center; font-size: 13px; color: var(--text-sub); }

/* ===== CTA ===== */
.cta {
  padding: 120px 24px;
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(255,107,53,0.08) 0%, transparent 70%);
}
.cta h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; margin-bottom: 14px; }
.cta p { font-size: 17px; color: var(--text-sub); margin-bottom: 36px; }
.btn-appstore-large { padding: 16px 28px; }
.btn-appstore-large .btn-large { font-size: 22px; }

/* ===== 页脚 ===== */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
}
.footer-icon { width: 28px; height: 28px; border-radius: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 14px; color: var(--text-sub); transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 13px; color: var(--text-sub); width: 100%; text-align: center; margin-top: 4px; }

/* ===== 滚动动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 80px;
    gap: 40px;
  }
  .hero-visual { order: -1; }
  .phone-mockup { width: 220px; height: 450px; }
  .hero-buttons { display: flex; justify-content: center; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-featured { transform: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .nav-title { display: none; }
}