/* 糖心Vlog官网 - 全局样式 */
:root {
  --primary: #ff6b9d;
  --primary-dark: #e84d82;
  --primary-light: #ffb3cc;
  --accent: #ff4081;
  --bg-dark: #1a0a12;
  --bg-card: #2a1520;
  --bg-card-hover: #3a1f2e;
  --text-primary: #fff5f8;
  --text-secondary: #d4a8b8;
  --text-muted: #9a7a88;
  --gradient-hero: linear-gradient(135deg, #1a0a12 0%, #2d1020 40%, #1a0a12 100%);
  --gradient-btn: linear-gradient(135deg, #ff6b9d 0%, #ff4081 100%);
  --shadow: 0 8px 32px rgba(255, 107, 157, 0.15);
  --shadow-lg: 0 16px 48px rgba(255, 107, 157, 0.25);
  --radius: 12px;
  --radius-lg: 20px;
  --header-h: 64px;
  --max-w: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--primary); }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(26, 10, 18, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 107, 157, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo img {
  height: 36px;
  width: auto;
  display: block;
}

.logo:hover { color: var(--primary-light); }

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--primary);
}

.btn-download-header {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--gradient-btn);
  color: #fff !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-download-header:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(26, 10, 18, 0.98);
  padding: 20px;
  border-bottom: 1px solid rgba(255, 107, 157, 0.12);
  z-index: 999;
}

.nav-mobile.open { display: block; }

.nav-mobile a {
  display: block;
  padding: 12px 0;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 107, 157, 0.08);
  font-size: 1rem;
}

.nav-mobile a:hover { color: var(--primary); }

/* Hero */
.hero {
  padding: calc(var(--header-h) + 48px) 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 18% auto auto 55%;
  width: 320px;
  height: 320px;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.2) 0%, rgba(255, 107, 157, 0.08) 30%, transparent 68%),
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.14) 0%, transparent 45%);
  filter: blur(10px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 44px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 107, 157, 0.1);
  border: 1px solid rgba(255, 107, 157, 0.22);
  color: var(--primary-light);
  font-size: 0.78rem;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
  letter-spacing: 0.02em;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(255, 107, 157, 0.8);
  flex-shrink: 0;
}

.hero-brand-card {
  padding: 28px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 107, 157, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(255, 107, 157, 0.14);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 60%, #ff8fb6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  max-width: 10ch;
}

.hero-content .lead {
  font-size: 1.02rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 34rem;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.hero-point {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 107, 157, 0.14);
  border-radius: 16px;
  padding: 14px;
}

.hero-point strong {
  display: block;
  color: var(--primary-light);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.hero-point span {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-btn);
  color: #fff;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 60px rgba(255, 107, 157, 0.35);
  color: #fff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 2px solid rgba(255, 107, 157, 0.4);
  color: var(--primary-light);
  border-radius: 50px;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(255, 107, 157, 0.1);
  color: var(--primary);
}

.hero-banner-frame {
  position: relative;
  padding: 20px;
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(255, 107, 157, 0.12), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 107, 157, 0.14);
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.hero-banner-media {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  line-height: 0;
}

.hero-banner-frame::after {
  content: "";
  position: absolute;
  inset: auto -18px -18px auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.22) 0%, transparent 70%);
  filter: blur(6px);
  pointer-events: none;
}

.hero-banner-frame::before {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.hero-banner-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.hero-banner-chip {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 107, 157, 0.14);
  border: 1px solid rgba(255, 107, 157, 0.16);
  color: var(--primary-light);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-banner-note {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.hero-banner img {
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-banner-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, transparent 55%, rgba(26, 10, 18, 0.45) 100%);
  pointer-events: none;
}

.hero-banner:hover img {
  transform: scale(1.02);
}

.hero-banner-card {
  position: absolute;
  left: 34px;
  bottom: 34px;
  max-width: 280px;
  padding: 18px 20px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(26, 10, 18, 0.88), rgba(58, 31, 46, 0.72));
  border: 1px solid rgba(255, 107, 157, 0.24);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.hero-banner-kicker {
  display: inline-block;
  color: var(--primary-light);
  font-size: 0.75rem;
  margin-bottom: 6px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-banner-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.hero-banner-card p {
  font-size: 0.84rem;
  color: var(--text-secondary);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt {
  background: rgba(42, 21, 32, 0.5);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
  color: var(--text-primary);
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.featured-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-card-lg {
  border: 1px solid rgba(255, 107, 157, 0.18);
}

.video-card-empty {
  min-height: 100%;
  display: flex;
  align-items: stretch;
  border-style: dashed;
}

.video-card-empty-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 22px;
  min-height: 100%;
}

.video-card-empty-kicker {
  color: var(--primary-light);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-card-promo {
  background: linear-gradient(180deg, rgba(255, 107, 157, 0.1), var(--bg-card));
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(255, 107, 157, 0.08);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 107, 157, 0.2);
}

.video-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.video-card-body {
  padding: 16px;
}

.video-card-body h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.video-card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Creator Grid */
.creator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 24px;
}

.creator-card {
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform var(--transition);
  border: 1px solid rgba(255, 107, 157, 0.08);
}

.creator-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 107, 157, 0.2);
}

.creator-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  border: 3px solid var(--primary);
}

.creator-card h3 {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.creator-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* App Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.screenshot-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid rgba(255, 107, 157, 0.15);
  transition: transform var(--transition);
}

.screenshot-item:hover { transform: scale(1.03); }

.screenshot-item img {
  width: 100%;
  aspect-ratio: 9/19;
  object-fit: cover;
}

/* Content Article */
.content-article {
  max-width: 800px;
  margin: 0 auto;
}

.content-article h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
  color: var(--primary-light);
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(255, 107, 157, 0.2);
}

.content-article h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
  color: var(--text-primary);
}

.content-article p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.content-article ul,
.content-article ol {
  margin: 16px 0 16px 24px;
  color: var(--text-secondary);
}

.content-article li { margin-bottom: 8px; }

.content-article a { color: var(--primary); }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border-left: 4px solid var(--primary);
  position: relative;
}

.step-num {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--gradient-btn);
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.step-card h3 {
  margin: 8px 0 10px;
  font-size: 1.05rem;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid rgba(255, 107, 157, 0.08);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
}

.faq-item.open .faq-answer { max-height: 500px; }

.faq-answer p {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Download Section */
.download-section {
  background: linear-gradient(135deg, #2d1020 0%, #1a0a12 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  border: 1px solid rgba(255, 107, 157, 0.2);
  margin: 48px 0;
}

.download-section h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.download-section > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.app-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.app-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(255, 107, 157, 0.1);
  transition: transform var(--transition), border-color var(--transition);
}

.app-card.featured {
  border: 2px solid var(--primary);
  background: linear-gradient(180deg, rgba(255, 107, 157, 0.08) 0%, var(--bg-card) 100%);
  position: relative;
}

.app-card.featured::before {
  content: "主推";
  position: absolute;
  top: -1px;
  right: 20px;
  background: var(--gradient-btn);
  color: #fff;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 0 0 8px 8px;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 107, 157, 0.3);
}

.app-card img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  margin: 0 auto 16px;
}

.app-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.app-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.platform-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-platform {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--gradient-btn);
  color: #fff;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform var(--transition);
}

.btn-platform:hover {
  transform: scale(1.05);
  color: #fff;
}

/* Side Float */
.top-download-strip {
  position: sticky;
  top: var(--header-h);
  z-index: 950;
  padding: 7px 0;
  background:
    linear-gradient(180deg, rgba(26, 10, 18, 0.88) 0%, rgba(26, 10, 18, 0.72) 100%);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid rgba(255, 107, 157, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
}

.top-download-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 2px 4px;
  mask-image: linear-gradient(90deg, transparent, #000 16px, #000 calc(100% - 16px), transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 16px, #000 calc(100% - 16px), transparent);
}

.top-download-strip-inner::-webkit-scrollbar {
  display: none;
}

.side-float {
  display: contents;
}

.side-float-label {
  display: none;
}

.side-float-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 14px 6px 6px;
  border-radius: 999px;
  border: 1px solid rgba(255, 107, 157, 0.16);
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
  transition: all var(--transition);
  white-space: nowrap;
  backdrop-filter: blur(6px);
}

.side-float-item:hover {
  background: rgba(255, 107, 157, 0.1);
  border-color: rgba(255, 107, 157, 0.45);
  color: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 157, 0.18);
}

.side-float-item.featured {
  border-color: rgba(255, 107, 157, 0.55);
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.18) 0%, rgba(42, 21, 32, 0.85) 100%);
  box-shadow:
    0 2px 16px rgba(255, 107, 157, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.side-float-item img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.side-float-name {
  letter-spacing: 0.01em;
}

/* Breadcrumb */
.breadcrumb {
  padding: calc(var(--header-h) + 24px) 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }

/* Page Header */
.page-header {
  padding: 32px 0 48px;
  text-align: center;
}

.page-header h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 80px;
}

.legal-content h2 {
  font-size: 1.3rem;
  margin: 32px 0 12px;
  color: var(--primary-light);
}

.legal-content h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
  color: var(--text-primary);
}

.legal-content p,
.legal-content li {
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.8;
}

.legal-content ul,
.legal-content ol {
  margin-left: 24px;
  margin-bottom: 16px;
}

/* Footer */
.site-footer {
  background: rgba(16, 6, 10, 0.95);
  border-top: 1px solid rgba(255, 107, 157, 0.1);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 4px 0;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 107, 157, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* 404 */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.error-page h1 {
  font-size: 6rem;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}

.error-page h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-page p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* CTA Banner */
.cta-banner {
  background: var(--gradient-btn);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin: 48px 0;
}

.cta-banner h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: #fff;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 24px;
}

.cta-banner .btn-secondary {
  border-color: #fff;
  color: #fff;
}

.cta-banner .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Video tags */
.video-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.video-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  background: rgba(255, 107, 157, 0.12);
  color: var(--primary-light);
  border-radius: 50px;
  border: 1px solid rgba(255, 107, 157, 0.2);
}

.video-card-body .video-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.6;
}

/* Spotlight - 图文深度介绍 */
.spotlight-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

#seo-guide .spotlight-list {
  gap: 28px;
}

.spotlight-item {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 32px;
  align-items: start;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 157, 0.1);
  transition: border-color var(--transition);
}

.spotlight-item:hover {
  border-color: rgba(255, 107, 157, 0.25);
}

.spotlight-item.reverse {
  grid-template-columns: 1fr 340px;
}

.spotlight-item.reverse .spotlight-img { order: 2; }
.spotlight-item.reverse .spotlight-body { order: 1; }

.spotlight-img img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.spotlight-body {
  padding: 28px 28px 28px 0;
}

.spotlight-item:not(.reverse) .spotlight-body {
  padding: 28px 28px 28px 0;
}

.spotlight-item.reverse .spotlight-body {
  padding: 28px 0 28px 28px;
}

.spotlight-body h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.spotlight-body .spotlight-meta {
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 14px;
}

.spotlight-body p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.75;
}

.spotlight-body a.inline-link {
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Creator profile cards */
.creator-profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.creator-profile {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 157, 0.1);
}

.creator-profile-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.08) 0%, transparent 100%);
  border-bottom: 1px solid rgba(255, 107, 157, 0.08);
}

.creator-profile-header img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
  flex-shrink: 0;
}

.creator-profile-header h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.creator-profile-header .creator-stats {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.creator-profile-body {
  padding: 20px;
}

.creator-profile-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
}

.creator-profile-preview {
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 12px;
}

.creator-profile-preview img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

/* App feature rows with screenshots */
.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin: 40px 0;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 32px;
  align-items: center;
}

.feature-row.reverse {
  grid-template-columns: 220px 1fr;
}

.feature-row.reverse .feature-shot { order: -1; }

.feature-text h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--primary-light);
}

.feature-text p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 10px;
}

.feature-shot img {
  border-radius: var(--radius);
  border: 2px solid rgba(255, 107, 157, 0.15);
  width: 100%;
  aspect-ratio: 9/19;
  object-fit: cover;
}

/* Mid-page banner */
.mid-banner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 48px 0;
  position: relative;
}

.mid-banner img {
  width: 100%;
  aspect-ratio: 21/7;
  object-fit: cover;
}

.mid-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(26, 10, 18, 0.85) 0%, rgba(26, 10, 18, 0.3) 60%, transparent 100%);
  display: flex;
  align-items: center;
  padding: 40px;
}

.mid-banner-overlay h2 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: 10px;
}

.mid-banner-overlay p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  max-width: 480px;
}

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 107, 157, 0.1);
}

.stat-item .stat-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

@media (max-width: 900px) {
  .spotlight-item,
  .spotlight-item.reverse {
    grid-template-columns: 1fr;
  }
  .spotlight-item.reverse .spotlight-img,
  .spotlight-item.reverse .spotlight-body { order: unset; }
  .spotlight-body,
  .spotlight-item:not(.reverse) .spotlight-body,
  .spotlight-item.reverse .spotlight-body {
    padding: 20px;
  }
  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
  }
  .feature-row.reverse .feature-shot { order: unset; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .mid-banner-overlay { padding: 24px; }
}

/* Internal links highlight */
.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
}

.internal-links a {
  padding: 8px 16px;
  background: var(--bg-card);
  border-radius: 50px;
  font-size: 0.85rem;
  border: 1px solid rgba(255, 107, 157, 0.15);
  color: var(--text-secondary);
}

.internal-links a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    padding: calc(var(--header-h) + 12px) 0 56px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-banner { order: -1; }

  .hero-banner-frame {
    padding: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .hero-banner-frame::before,
  .hero-banner-frame::after {
    display: none;
  }

  .hero-banner-topline {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    z-index: 2;
    margin-bottom: 0;
    pointer-events: none;
  }

  .hero-banner-chip {
    font-size: 0.65rem;
    padding: 4px 10px;
    background: rgba(26, 10, 18, 0.55);
    backdrop-filter: blur(8px);
  }

  .hero-banner-note {
    display: none;
  }

  .hero-banner-media {
    border-radius: 18px;
  }

  .hero-banner-media::after {
    background: linear-gradient(180deg, transparent 72%, rgba(26, 10, 18, 0.2) 100%);
  }

  .hero-banner img {
    border-radius: 18px;
    aspect-ratio: 16/9;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }

  .hero-banner:hover img {
    transform: none;
  }

  .hero-banner-card {
    position: static;
    max-width: none;
    margin-top: 12px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 107, 157, 0.12);
    backdrop-filter: none;
    box-shadow: none;
  }

  .hero-banner-card h3 {
    font-size: 0.92rem;
  }

  .hero-banner-card p {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  .hero-brand-card {
    padding: 20px 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
    box-shadow: none;
  }

  .hero-content h1 {
    max-width: none;
    font-size: clamp(1.6rem, 6.5vw, 2.4rem);
    line-height: 1.12;
    margin-bottom: 12px;
  }

  .hero-content .lead {
    font-size: 0.92rem;
    margin-bottom: 20px;
    line-height: 1.65;
  }

  .hero-badge {
    font-size: 0.72rem;
    margin-bottom: 12px;
  }

  .hero-points {
    display: flex;
    gap: 8px;
    margin-top: 18px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .hero-points::-webkit-scrollbar {
    display: none;
  }

  .hero-point {
    flex: 0 0 auto;
    min-width: 108px;
    padding: 10px 12px;
    border-radius: 12px;
  }

  .hero-point strong {
    font-size: 0.82rem;
  }

  .hero-point span {
    font-size: 0.75rem;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .top-download-strip { top: var(--header-h); }
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: block; }
  .section { padding: 56px 0; }
  .download-section { padding: 32px 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .top-download-strip { padding: 6px 0; }
  .top-download-strip-inner {
    justify-content: flex-start;
    gap: 6px;
    mask-image: linear-gradient(90deg, transparent, #000 12px, #000 calc(100% - 28px), transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 12px, #000 calc(100% - 28px), transparent);
  }
  .side-float-item {
    padding: 5px 12px 5px 5px;
    font-size: 0.74rem;
  }
  .side-float-item img {
    width: 30px;
    height: 30px;
    border-radius: 8px;
  }
  .hero-btns {
    gap: 10px;
  }
  .btn-primary,
  .btn-secondary {
    padding: 12px 22px;
    font-size: 0.92rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: calc(var(--header-h) + 8px) 0 40px;
  }

  .hero-grid {
    gap: 16px;
  }

  .container {
    padding: 0 16px;
  }

  .hero-banner-topline {
    display: none;
  }

  .hero-banner-media {
    border-radius: 14px;
    margin: 0 -2px;
  }

  .hero-banner img {
    border-radius: 14px;
    aspect-ratio: 4/3;
  }

  .hero-banner-media::after {
    display: none;
  }

  .hero-banner-card {
    display: none;
  }

  .hero-brand-card {
    padding: 16px 14px;
    border-radius: 16px;
  }

  .hero-content h1 {
    font-size: 1.55rem;
    letter-spacing: -0.02em;
  }

  .hero-content .lead {
    font-size: 0.86rem;
    margin-bottom: 16px;
  }

  .hero-btns { flex-direction: column; }
  .hero-btns a { width: 100%; justify-content: center; }
  .platform-btns { flex-direction: column; }
  .btn-platform { width: 100%; justify-content: center; }
  .side-float-item img {
    width: 28px;
    height: 28px;
  }
}