/* 糖心 Vlog - 深色主题，落地页风格 */
:root {
  --bg-dark: #0f0f1a;
  --accent-pink: #ff00aa;
  --accent-purple: #7b00ff;
  --text-white: #ffffff;
  --text-muted: #cccccc;
  --card-border: rgba(123, 0, 255, 0.4);
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }

body {
  background: var(--bg-dark);
  color: var(--text-white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  min-height: 100vh;
}

/* 导航 */
.site-header {
  background: rgba(15, 15, 26, 0.95);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar-dark .navbar-brand {
  color: var(--text-white) !important;
  font-weight: bold;
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
}
.navbar-dark .navbar-brand .site-logo {
  height: 32px;
  width: auto;
  margin-right: 0.5rem;
  vertical-align: middle;
}
@media (max-width: 767px) {
  .navbar-dark .navbar-brand .site-logo { height: 28px; }
}
.navbar-dark .navbar-nav .nav-link {
  color: var(--text-muted) !important;
}
.navbar-dark .navbar-nav .nav-link:hover {
  color: var(--accent-pink) !important;
}
.navbar-toggler {
  border-color: var(--card-border);
}
.navbar-toggler-icon { filter: invert(1); }

/* 主内容区 */
.site-main { min-height: 60vh; }

/* 英雄区 */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a0a2e 50%, var(--bg-dark) 100%);
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../images/bg.jpg') center/cover no-repeat;
  filter: blur(3px) brightness(0.55);
  z-index: 0;
}
.hero-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(123,0,255,0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 70%, rgba(255,0,170,0.08) 0%, transparent 40%);
  z-index: 0;
}
.hero-section .container { position: relative; z-index: 1; }
.hero-section h1 {
  font-family: Impact, "Microsoft YaHei", "黑体", sans-serif;
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: bold;
  text-shadow: 0 0 30px var(--accent-pink), 0 0 60px var(--accent-purple);
  color: var(--text-white);
  margin-bottom: 1rem;
  line-height: 1.2;
}
.hero-section .lead {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}
.hero-disclosure {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
  opacity: 0.9;
}

/* CTA 按钮 - 粉紫渐变 */
.btn-cta {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--text-white) !important;
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
  border: none;
  border-radius: 999px;
  text-decoration: none !important;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(255, 0, 170, 0.3);
}
.btn-cta:hover {
  color: var(--text-white) !important;
  transform: scale(1.05);
  box-shadow: 0 6px 30px rgba(255, 0, 170, 0.5), 0 0 40px rgba(123, 0, 255, 0.3);
}

/* 区块标题 */
.section-title {
  font-family: Impact, "Microsoft YaHei", "黑体", sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--text-white);
  margin-bottom: 1.5rem;
  text-align: center;
}

/* 卡片 - 深色 + 紫边 */
.card-dark {
  background: rgba(20, 20, 35, 0.9);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  color: var(--text-white);
  height: 100%;
  transition: box-shadow 0.2s;
}
.card-dark:hover { box-shadow: 0 6px 28px rgba(123, 0, 255, 0.2); }
.card-dark .card-body { color: var(--text-muted); }
.card-dark .card-title { color: var(--text-white); }

/* 卖点图标 */
.feature-icon {
  width: 48px;
  height: 48px;
  border: 2px solid var(--accent-purple);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-pink);
  margin-bottom: 0.75rem;
}

/* FAQ 手风琴 */
.accordion-dark .card {
  background: rgba(20, 20, 35, 0.9);
  border: 1px solid var(--card-border);
  border-radius: 8px !important;
  margin-bottom: 0.5rem;
}
.accordion-dark .card-header {
  background: transparent;
  border-bottom: none;
  padding: 1rem;
}
.accordion-dark .card-header button {
  color: var(--text-white);
  text-decoration: none;
  width: 100%;
  text-align: left;
  font-weight: 600;
}
.accordion-dark .card-body {
  color: var(--text-muted);
  border-top: 1px solid rgba(123, 0, 255, 0.2);
}

/* 用户反馈卡片 */
.review-card {
  background: rgba(20, 20, 35, 0.9);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.review-card .stars { color: #ffc107; }
.review-card .badge-verified {
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

/* 页脚 */
.site-footer {
  background: rgba(10, 10, 20, 0.95);
  border-top: 1px solid var(--card-border);
  padding: 2rem 0;
  margin-top: 3rem;
  text-align: center;
}
.site-footer a { color: var(--accent-pink); }
.site-footer a:hover { color: var(--accent-purple); }
.footer-links { margin-bottom: 1rem; }
.footer-links a { margin: 0 0.75rem; }
.footer-disclosure {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 1rem 0;
}
.footer-copy { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

/* 移动端：按钮全宽 */
@media (max-width: 767px) {
  .hero-section .btn-cta { display: block; width: 100%; max-width: 320px; margin: 0 auto; }
  .section-title { font-size: 1.5rem; }
  .card-dark { margin-bottom: 1rem; }
  .footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; }
}

/* 固定底部 CTA（仅移动端） */
.fixed-bottom-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1rem;
  background: rgba(15, 15, 26, 0.98);
  border-top: 1px solid var(--card-border);
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
}
@media (max-width: 767px) {
  .fixed-bottom-cta { display: block; }
  .fixed-bottom-cta .btn-cta { width: 100%; text-align: center; padding: 0.9rem; }
  .site-main { padding-bottom: 70px; }
}

/* 图片懒加载占位 */
img[data-src] { min-height: 120px; background: rgba(30,30,50,0.5); }

/* 内容页通用 */
.page-hero {
  background: linear-gradient(135deg, var(--bg-dark), #1a0a2e);
  padding: 3rem 0 2rem;
  margin-bottom: 2rem;
}
.page-hero h1 {
  font-family: Impact, "Microsoft YaHei", "黑体", sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--text-white);
}
.content-body {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 3rem;
}
.content-body h2 { color: var(--text-white); font-size: 1.35rem; margin-top: 1.5rem; }
.content-body h3 { color: var(--text-white); font-size: 1.15rem; margin-top: 1.25rem; }
.content-body a { color: var(--accent-pink); }
.content-body a:hover { color: var(--accent-purple); }
.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
.content-body th, .content-body td {
  border: 1px solid var(--card-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
.content-body th { background: rgba(123,0,255,0.15); color: var(--text-white); }
.content-body .table-dark { background: rgba(20,20,35,0.95); color: var(--text-muted); border-color: var(--card-border); }
.content-body .table-dark th, .content-body .table-dark td { border-color: var(--card-border); }
.content-body .author-box {
  background: rgba(20,20,35,0.9);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-top: 2rem;
}