/* ============================================================
   繁花 - 官网样式表
   Domain: fanhua-app.cn
   Theme: 繁花粉紫 / Blossom Pink-Purple
   ============================================================ */

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

:root {
  /* 繁花粉紫主题色 */
  --color-primary: #d63384;
  --color-primary-light: #e865a8;
  --color-primary-dark: #a01e5c;
  --color-purple: #9b59b6;
  --color-purple-light: #bb8fce;
  --color-accent: #f39c12;
  --color-accent-soft: #fdebd0;

  /* 中性色 */
  --color-bg: #fdf2f8;
  --color-bg-soft: #fff5fa;
  --color-bg-card: #ffffff;
  --color-text: #2d1b2e;
  --color-text-secondary: #6b4a6e;
  --color-text-muted: #a88ba8;
  --color-border: #f0d9e8;
  --color-border-light: #faeaf3;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #e865a8 0%, #d63384 50%, #9b59b6 100%);
  --gradient-soft: linear-gradient(135deg, #fdf2f8 0%, #f5e6f0 100%);
  --gradient-text: linear-gradient(135deg, #d63384 0%, #9b59b6 100%);
  --gradient-hero: linear-gradient(180deg, #fae6f0 0%, #fdf2f8 100%);
  --gradient-rating: linear-gradient(90deg, #f39c12, #f1c40f);

  /* 阴影 */
  --shadow-sm: 0 2px 12px rgba(214, 51, 132, 0.08);
  --shadow-md: 0 8px 30px rgba(214, 51, 132, 0.12);
  --shadow-lg: 0 20px 50px rgba(214, 51, 132, 0.18);
  --shadow-glow: 0 0 40px rgba(214, 51, 132, 0.25);

  /* 圆角 */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;

  --nav-height: 72px;
  --container-max: 1100px;
  --container-padding: 1.5rem;
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s ease;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section { padding: 4.5rem 0; position: relative; }

.section-tag {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: linear-gradient(135deg, #fde6f0, #f0e0f5);
  color: var(--color-primary-dark);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto 3rem;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(214, 51, 132, 0.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(214, 51, 132, 0.5);
  color: #fff;
}
.btn-outline {
  background: #fff;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
}
.btn-lg { padding: 1.05rem 2.4rem; font-size: 1.05rem; }
.btn .btn-icon { width: 20px; height: 20px; flex-shrink: 0; }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: rgba(253, 242, 248, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
}
.logo-img {
  width: 42px; height: 42px;
  object-fit: contain;
}
.logo-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 0.25rem 0;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
  border-radius: 2px;
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 应用信息区（豌豆荚风格） ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 4rem;
  background: var(--gradient-hero);
  overflow: hidden;
}
.hero-decor {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
  pointer-events: none;
}
.hero-decor-1 {
  width: 350px; height: 350px;
  background: #e865a8;
  top: -80px; right: -60px;
  animation: floatDecor 8s ease-in-out infinite;
}
.hero-decor-2 {
  width: 280px; height: 280px;
  background: #bb8fce;
  bottom: -60px; left: -40px;
  animation: floatDecor 10s ease-in-out infinite reverse;
}
@keyframes floatDecor {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -15px) scale(1.1); }
}

.hero-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5rem;
  align-items: start;
  position: relative;
  z-index: 1;
}
.hero-icon-wrap { flex-shrink: 0; }
.hero-icon {
  width: 120px; height: 120px;
  border-radius: 28px;
  background: #fff;
  padding: 12px;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-border);
}
.hero-icon img { width: 100%; height: 100%; object-fit: contain; }

.hero-info h1 {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.hero-rating {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.hero-stars {
  display: flex;
  gap: 2px;
  color: #f39c12;
  font-size: 1.1rem;
}
.hero-rating-num {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}
.hero-rating-count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.hero-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.hero-tag {
  padding: 0.25rem 0.75rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  color: var(--color-primary-dark);
  font-weight: 500;
}
.hero-desc {
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  max-width: 620px;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.hero-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.hero-meta-item { display: flex; align-items: center; gap: 0.35rem; }
.dot { width: 4px; height: 4px; background: var(--color-text-muted); border-radius: 50%; }

/* ---------- 应用截图展示 ---------- */
.screenshots { background: var(--color-bg); }
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.screenshot-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}
.screenshot-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.screenshot-card img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
}
.screenshot-label {
  padding: 0.875rem 1rem;
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  border-top: 1px solid var(--color-border-light);
}

/* ---------- 应用简介 ---------- */
.about { background: var(--color-bg-soft); }
.about-content {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}
.about-content p {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.about-content p:last-child { margin-bottom: 0; }
.about-highlight {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-light);
}
.about-stat { text-align: center; }
.about-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.about-stat-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* ---------- 功能亮点 ---------- */
.features { background: var(--color-bg); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #fde6f0, #f0e0f5);
}
.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.feature-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- 用户评价（豌豆荚风格） ---------- */
.reviews { background: var(--color-bg-soft); }
.reviews-summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.reviews-score {
  text-align: center;
}
.reviews-score-num {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.reviews-score-stars {
  display: flex;
  justify-content: center;
  gap: 3px;
  color: #f39c12;
  font-size: 1.2rem;
  margin-top: 0.5rem;
}
.reviews-score-count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}
.reviews-bars {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 220px;
}
.reviews-bar-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}
.reviews-bar-label { width: 30px; text-align: right; }
.reviews-bar-track {
  flex: 1;
  height: 8px;
  background: var(--color-border-light);
  border-radius: 4px;
  overflow: hidden;
}
.reviews-bar-fill {
  height: 100%;
  background: var(--gradient-rating);
  border-radius: 4px;
}
.reviews-bar-pct { width: 36px; color: var(--color-text-muted); }

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.review-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}
.review-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.review-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  flex-shrink: 0;
}
.review-avatar.c1 { background: linear-gradient(135deg, #e865a8, #d63384); }
.review-avatar.c2 { background: linear-gradient(135deg, #bb8fce, #9b59b6); }
.review-avatar.c3 { background: linear-gradient(135deg, #f39c12, #e67e22); }
.review-avatar.c4 { background: linear-gradient(135deg, #5dade2, #3498db); }
.review-meta { flex: 1; }
.review-name { font-weight: 600; font-size: 0.92rem; }
.review-date { font-size: 0.78rem; color: var(--color-text-muted); }
.review-stars { color: #f39c12; font-size: 0.85rem; }
.review-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- 应用信息表 ---------- */
.app-info { background: var(--color-bg); }
.info-table {
  max-width: 780px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}
.info-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-bottom: 1px solid var(--color-border-light);
}
.info-row:last-child { border-bottom: none; }
.info-label {
  padding: 1rem 1.5rem;
  background: var(--color-bg-soft);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.info-value {
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ---------- 下载CTA ---------- */
.download-cta {
  background: var(--gradient-primary);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.download-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("img/screen-2.png") center/cover;
  opacity: 0.08;
}
.download-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}
.download-cta h2 {
  font-size: 2rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 0.75rem;
}
.download-cta p {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}
.download-cta .btn {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.download-cta .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
  color: var(--color-primary);
}
.download-cta-meta {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
}

/* ---------- 页脚 ---------- */
.footer {
  background: #2d1b2e;
  color: rgba(255,255,255,0.65);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand .logo { color: #fff; margin-bottom: 1rem; }
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--color-primary-light); }
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.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; }

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  border: none;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .screenshots-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .section { padding: 3rem 0; }
  .section-title { font-size: 1.7rem; }

  .nav-links {
    position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    transition: transform var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: flex; }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.5rem;
  }
  .hero-icon-wrap { margin: 0 auto; }
  .hero-icon { width: 90px; height: 90px; }
  .hero-info h1 { font-size: 1.8rem; }
  .hero-rating, .hero-tags, .hero-actions, .hero-meta { justify-content: center; }

  .features-grid { grid-template-columns: 1fr; }
  .about-highlight { grid-template-columns: 1fr; gap: 1rem; }
  .reviews-summary { gap: 1.5rem; }
  .info-row { grid-template-columns: 1fr; }
  .info-label { background: transparent; padding-bottom: 0.25rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .back-to-top { bottom: 1rem; right: 1rem; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
  .screenshots-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .about-content { padding: 1.5rem; }
}

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