/* ============================================================
   糖心vlog - 高清短视频分享平台
   主样式表 - 设计系统 + 组件 + 响应式 + 动画
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --color-primary: #ff5e8a;
  --color-primary-dark: #e23e6e;
  --color-primary-light: #ff8fb1;
  --color-accent: #ffb347;
  --color-accent-dark: #f59e0b;
  --color-purple: #8b5cf6;

  --color-bg: #fff7fa;
  --color-bg-alt: #ffeef4;
  --color-bg-dark: #2a1a2e;
  --color-bg-darker: #1f1224;

  --color-text: #2d1b2e;
  --color-text-light: #6b5568;
  --color-text-muted: #a08aa0;
  --color-text-on-dark: #fdf2f8;

  --color-border: #f3d9e6;
  --color-border-light: #fbeaf2;

  --gradient-primary: linear-gradient(135deg, #ff5e8a 0%, #ff8fb1 50%, #ffb347 100%);
  --gradient-hero: linear-gradient(135deg, #2a1a2e 0%, #4a1f3a 45%, #7a2a4a 100%);
  --gradient-card: linear-gradient(135deg, #ffffff 0%, #fff7fa 100%);
  --gradient-soft: linear-gradient(135deg, #ffeef4 0%, #fff3e0 100%);

  --shadow-sm: 0 2px 8px rgba(226, 62, 110, 0.08);
  --shadow-md: 0 8px 24px rgba(226, 62, 110, 0.12);
  --shadow-lg: 0 16px 48px rgba(226, 62, 110, 0.18);
  --shadow-glow: 0 0 32px rgba(255, 94, 138, 0.35);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-full: 999px;

  --container-max: 1200px;
  --header-h: 72px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ---------- 2. 重置与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }

ul, ol { list-style: none; }

button { font-family: inherit; cursor: pointer; border: none; background: none; }

input, textarea, select { font-family: inherit; font-size: inherit; }

/* ---------- 3. 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.section { padding: 96px 0; position: relative; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--gradient-hero); color: var(--color-text-on-dark); }

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(255, 94, 138, 0.1);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 48px;
}
.section--dark .section-desc { color: rgba(253, 242, 248, 0.75); }
.text-center { text-align: center; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  transition: all .35s var(--ease);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 94, 138, 0.4);
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(255, 94, 138, 0.5);
}
.btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-3px); }
.btn--outline {
  background: transparent;
  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: 18px 40px; font-size: 1.1rem; }

/* ---------- 5. 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(255, 247, 250, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-border-light);
  transition: all .3s var(--ease);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 247, 250, 0.95);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-text);
}
.brand-logo {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--gradient-primary);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
}
.brand-name { background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-light);
  border-radius: var(--radius-full);
  transition: all .3s var(--ease);
}
.nav-link:hover { color: var(--color-primary); background: rgba(255, 94, 138, 0.08); }
.nav-link.active { color: var(--color-primary); background: rgba(255, 94, 138, 0.12); }

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

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(255, 94, 138, 0.1);
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-primary);
  position: relative;
  transition: all .3s var(--ease);
}
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0; width: 22px; height: 2px;
  background: var(--color-primary);
  transition: all .3s var(--ease);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 80px) 0 96px;
  background: var(--gradient-hero);
  color: var(--color-text-on-dark);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 94, 138, 0.35), transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(255, 179, 71, 0.3), transparent 45%);
  pointer-events: none;
}
.hero-shapes { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  animation: float 8s ease-in-out infinite;
}
.hero-shape--1 { width: 320px; height: 320px; background: #ff5e8a; top: 10%; left: -80px; }
.hero-shape--2 { width: 260px; height: 260px; background: #ffb347; bottom: 10%; right: -60px; animation-delay: 2s; }
.hero-shape--3 { width: 180px; height: 180px; background: #8b5cf6; top: 50%; left: 60%; animation-delay: 4s; opacity: 0.3; }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 10px #4ade80; }
.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, #ff8fb1, #ffb347);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 1.15rem;
  color: rgba(253, 242, 248, 0.82);
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}
.hero-stat .num {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ff8fb1, #ffb347);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-stat .label { font-size: 0.9rem; color: rgba(253, 242, 248, 0.7); }

.hero-visual { position: relative; }
.hero-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: floatCard 6s ease-in-out infinite;
}
.hero-card img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.hero-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(42, 26, 46, 0.85) 0%, transparent 50%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
}
.hero-card-overlay .tag {
  align-self: flex-start;
  padding: 5px 14px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.hero-card-overlay h3 { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.hero-card-overlay p { font-size: 0.9rem; color: rgba(255,255,255,0.8); }

.hero-floating {
  position: absolute;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 2;
}
.hero-floating--1 { top: 10%; left: -8%; animation: floatCard 7s ease-in-out infinite 1s; }
.hero-floating--2 { bottom: 12%; right: -8%; animation: floatCard 7s ease-in-out infinite 0.5s; }
.hero-floating .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gradient-primary); }
.hero-floating .meta small { display: block; color: var(--color-text-muted); font-size: 0.75rem; }
.hero-floating .meta strong { color: var(--color-text); font-size: 0.9rem; }

/* ---------- 7. 特性网格 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all .4s var(--ease);
  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 .4s var(--ease);
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 60px; height: 60px;
  border-radius: 18px;
  background: var(--gradient-soft);
  display: grid; place-items: center;
  font-size: 1.6rem;
  margin-bottom: 22px;
  transition: transform .4s var(--ease);
}
.feature-card:hover .feature-icon { transform: rotate(-8deg) scale(1.1); }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.feature-card p { color: var(--color-text-light); font-size: 0.95rem; }

/* ---------- 8. 内容 / 视频卡片 ---------- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}
.video-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all .4s var(--ease);
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-duration {
  position: absolute;
  bottom: 10px; right: 10px;
  padding: 4px 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 0.78rem;
  border-radius: 6px;
  font-weight: 600;
}
.video-play {
  position: absolute;
  inset: 0;
  display: grid; place-items: center;
  background: rgba(255, 94, 138, 0);
  transition: background .3s var(--ease);
}
.video-card:hover .video-play { background: rgba(42, 26, 46, 0.35); }
.video-play .play-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  display: grid; place-items: center;
  font-size: 1.3rem;
  color: var(--color-primary);
  transform: scale(0.7);
  opacity: 0;
  transition: all .3s var(--ease-bounce);
}
.video-card:hover .video-play .play-btn { transform: scale(1); opacity: 1; }
.video-body { padding: 18px 20px 22px; }
.video-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.video-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--color-text-muted); }
.video-meta .author { display: flex; align-items: center; gap: 8px; }
.video-meta .author img { width: 26px; height: 26px; border-radius: 50%; }

/* 分类标签 */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}
.category-tab {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all .3s var(--ease);
}
.category-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.category-tab.active {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(255, 94, 138, 0.35);
}

/* ---------- 9. 服务介绍 ---------- */
.services-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.services-media { position: relative; }
.services-media img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.services-list { display: flex; flex-direction: column; gap: 22px; }
.service-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all .35s var(--ease);
}
.service-item:hover { box-shadow: var(--shadow-md); transform: translateX(8px); }
.service-item .num {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 800;
  display: grid; place-items: center;
}
.service-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.service-item p { color: var(--color-text-light); font-size: 0.92rem; }

/* ---------- 10. CTA ---------- */
.cta {
  position: relative;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-inner {
  position: relative;
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: 72px 40px;
  overflow: hidden;
}
.cta-inner::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 94, 138, 0.5), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 179, 71, 0.4), transparent 50%);
}
.cta h2 { position: relative; font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; margin-bottom: 16px; }
.cta p { position: relative; font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 32px; }
.cta .btn { position: relative; }

/* ---------- 11. FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow .3s var(--ease);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-text);
}
.faq-q .icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255, 94, 138, 0.12);
  color: var(--color-primary);
  display: grid; place-items: center;
  transition: transform .3s var(--ease);
  font-size: 0.9rem;
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease), padding .4s var(--ease);
  padding: 0 24px;
  color: var(--color-text-light);
}
.faq-item.open .faq-a { max-height: 320px; padding: 0 24px 20px; }

/* ---------- 12. 页脚 ---------- */
.site-footer {
  background: var(--color-bg-darker);
  color: rgba(253, 242, 248, 0.75);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand .brand-name { -webkit-text-fill-color: #fff; }
.footer-brand p { font-size: 0.92rem; line-height: 1.7; margin-bottom: 18px; }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 38px; height: 38px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  display: grid; place-items: center;
  transition: all .3s var(--ease);
  font-size: 1rem;
}
.footer-socials a:hover { background: var(--color-primary); transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.9rem; transition: color .3s var(--ease), padding .3s var(--ease); }
.footer-col ul li a:hover { color: var(--color-primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 0.88rem;
}
.footer-bottom a { color: var(--color-primary-light); }

/* ---------- 13. 面包屑 ---------- */
.breadcrumb {
  background: var(--color-bg-alt);
  padding: 24px 0;
  margin-top: var(--header-h);
}
.breadcrumb ul { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 0.9rem; }
.breadcrumb li a { color: var(--color-text-light); }
.breadcrumb li a:hover { color: var(--color-primary); }
.breadcrumb li.sep { color: var(--color-text-muted); }
.breadcrumb li.current { color: var(--color-primary); font-weight: 600; }

/* ---------- 14. 页面标题区 ---------- */
.page-hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: 80px 0 72px;
  margin-top: var(--header-h);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 30%, rgba(255, 94, 138, 0.4), transparent 50%);
}
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; margin-bottom: 14px; }
.page-hero p { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 620px; }

/* ---------- 15. 关于页 ---------- */
.about-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-hero img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.about-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px; }
.about-meta .item { background: var(--color-bg-alt); padding: 20px; border-radius: var(--radius-md); text-align: center; }
.about-meta .item .num { font-size: 1.8rem; font-weight: 800; color: var(--color-primary); }
.about-meta .item .label { font-size: 0.88rem; color: var(--color-text-light); }

.timeline { position: relative; padding-left: 32px; max-width: 720px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--color-border);
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -32px; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 3px rgba(255, 94, 138, 0.2);
}
.timeline-item .year { font-size: 1.1rem; font-weight: 800; color: var(--color-primary); margin-bottom: 4px; }
.timeline-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.timeline-item p { color: var(--color-text-light); font-size: 0.92rem; }

/* ---------- 16. 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card {
  display: flex;
  gap: 18px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all .3s var(--ease);
}
.contact-card:hover { box-shadow: var(--shadow-sm); transform: translateX(4px); }
.contact-card .icon {
  flex-shrink: 0;
  width: 52px; height: 52px;
  border-radius: 16px;
  background: var(--gradient-soft);
  display: grid; place-items: center;
  font-size: 1.3rem;
}
.contact-card h3 { font-size: 1.02rem; font-weight: 700; margin-bottom: 4px; }
.contact-card p { color: var(--color-text-light); font-size: 0.92rem; }

.contact-form {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.contact-form h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 8px; color: var(--color-text); }
.form-control {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: all .3s var(--ease);
  color: var(--color-text);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255, 94, 138, 0.12);
}
textarea.form-control { min-height: 140px; resize: vertical; }
.form-msg {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: #ecfdf5;
  color: #065f46;
  font-size: 0.92rem;
  display: none;
}
.form-msg.show { display: block; }

/* ---------- 17. 新闻页 ---------- */
.news-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: start; }
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 22px;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .35s var(--ease);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card img { width: 100%; height: 100%; object-fit: cover; min-height: 180px; }
.news-body { padding: 22px 22px 22px 0; display: flex; flex-direction: column; }
.news-body .meta { font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: 8px; display: flex; gap: 14px; }
.news-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.news-body p { color: var(--color-text-light); font-size: 0.92rem; flex: 1; }
.news-body .read-more { color: var(--color-primary); font-weight: 600; font-size: 0.9rem; margin-top: 14px; display: inline-flex; align-items: center; gap: 4px; }

.sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-widget {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.sidebar-widget h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--color-bg-alt); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a { padding: 6px 14px; background: var(--color-bg-alt); border-radius: var(--radius-full); font-size: 0.82rem; color: var(--color-text-light); transition: all .3s var(--ease); }
.tag-cloud a:hover { background: var(--color-primary); color: #fff; }
.sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--color-bg-alt); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li a { font-size: 0.9rem; color: var(--color-text-light); transition: color .3s; }
.sidebar-list li a:hover { color: var(--color-primary); }

.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span {
  min-width: 42px; height: 42px;
  padding: 0 14px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-light);
  transition: all .3s var(--ease);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .current { background: var(--gradient-primary); color: #fff; border-color: transparent; }

/* 新闻详情 */
.article { background: #fff; border: 1px solid var(--color-border-light); border-radius: var(--radius-xl); padding: 48px; }
.article-header { margin-bottom: 32px; }
.article-header .meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: 18px; }
.article-header .meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-cover { width: 100%; border-radius: var(--radius-lg); margin-bottom: 32px; }
.article-content { font-size: 1.05rem; line-height: 1.9; color: var(--color-text); }
.article-content h2 { font-size: 1.5rem; font-weight: 800; margin: 36px 0 16px; }
.article-content h3 { font-size: 1.2rem; font-weight: 700; margin: 28px 0 12px; }
.article-content p { margin-bottom: 18px; }
.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 14px 20px;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  color: var(--color-text-light);
  font-style: italic;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--color-border); }
.article-tags a { padding: 6px 14px; background: var(--color-bg-alt); border-radius: var(--radius-full); font-size: 0.85rem; color: var(--color-text-light); }
.article-tags a:hover { background: var(--color-primary); color: #fff; }

/* ---------- 18. 产品/服务套餐页 ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.price-card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  transition: all .4s var(--ease);
  position: relative;
  overflow: hidden;
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.price-card.featured {
  border: 2px solid var(--color-primary);
  background: linear-gradient(180deg, #fff 0%, #fff7fa 100%);
  transform: scale(1.03);
}
.price-card.featured::before {
  content: "最受欢迎";
  position: absolute;
  top: 18px; right: -36px;
  transform: rotate(45deg);
  background: var(--gradient-primary);
  color: #fff;
  padding: 4px 40px;
  font-size: 0.78rem;
  font-weight: 700;
}
.price-card .plan-name { font-size: 1.1rem; font-weight: 700; color: var(--color-text-light); margin-bottom: 10px; }
.price-card .price { font-size: 2.6rem; font-weight: 900; margin-bottom: 4px; }
.price-card .price .currency { font-size: 1.1rem; color: var(--color-text-muted); margin-right: 2px; }
.price-card .price .period { font-size: 0.9rem; color: var(--color-text-muted); font-weight: 500; }
.price-card .desc { color: var(--color-text-light); font-size: 0.9rem; margin: 12px 0 24px; padding-bottom: 24px; border-bottom: 1px solid var(--color-border); }
.price-card ul { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.price-card ul li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.92rem; color: var(--color-text); }
.price-card ul li .check { color: #10b981; flex-shrink: 0; font-weight: 800; }
.price-card ul li.disabled { color: var(--color-text-muted); text-decoration: line-through; }

/* ---------- 19. 动画 ---------- */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-24px); }
}
@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 94, 138, 0.4); }
  50% { box-shadow: 0 0 0 14px rgba(255, 94, 138, 0); }
}

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

.hero h1, .hero-sub, .hero-actions, .hero-stats { animation: fadeInUp 1s var(--ease) both; }
.hero-sub { animation-delay: .15s; }
.hero-actions { animation-delay: .3s; }
.hero-stats { animation-delay: .45s; }

/* ---------- 20. 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: grid; place-items: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all .3s var(--ease);
  z-index: 999;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 960px) {
  .section { padding: 72px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .hero-sub, .hero-stats { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .services-layout, .about-hero, .contact-grid, .news-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .news-card { grid-template-columns: 1fr; }
  .news-body { padding: 0 22px 22px; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 247, 250, 0.98);
    backdrop-filter: blur(14px);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    transition: transform .35s var(--ease);
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { padding: 14px 16px; }
  .nav-toggle { display: flex; }
  .header-actions .btn--primary { display: none; }

  .hero-floating--1 { left: 0; }
  .hero-floating--2 { right: 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-inner { padding: 56px 24px; }
  .article { padding: 28px 20px; }
  .price-card.featured { transform: none; }
}

@media (max-width: 480px) {
  .container { padding-inline: 16px; }
  .section { padding: 56px 0; }
  .hero-actions .btn { flex: 1; }
  .about-meta { grid-template-columns: 1fr; }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}