/* ============================================
   糖心vlog - 站点样式
   主色 #1e3a8a / 浅色背景 / 钓鱼主题
   ============================================ */
:root {
  --primary: #1e3a8a;
  --primary-2: #3b82f6;
  --accent: #0ea5e9;
  --grad: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 55%, #0ea5e9 100%);
  --bg: #f4f7fc;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5eaf3;
  --gold: #f59e0b;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(30, 58, 138, 0.10);
  --shadow-hover: 0 18px 40px rgba(30, 58, 138, 0.18);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ============ 顶部导航 ============ */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 14px rgba(30, 58, 138, 0.08);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 18px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; color: var(--primary); white-space: nowrap; }
.logo-emoji {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--grad); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; box-shadow: 0 4px 12px rgba(30, 58, 138, 0.35);
}
.nav-links { display: flex; gap: 22px; list-style: none; }
.nav-links a { color: #475569; font-size: 15px; font-weight: 500; transition: color .2s; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-actions { display: flex; gap: 10px; white-space: nowrap; }
.btn-outline {
  padding: 8px 20px; border-radius: 999px; font-size: 14px; font-weight: 600;
  border: 1.5px solid var(--primary); color: var(--primary); background: transparent;
  cursor: pointer; transition: all .2s;
}
.btn-outline:hover { background: rgba(30, 58, 138, 0.08); }
.btn-primary {
  padding: 8px 20px; border-radius: 999px; font-size: 14px; font-weight: 600;
  border: none; color: #fff; background: var(--grad); cursor: pointer;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3); transition: transform .2s;
}
.btn-primary:hover { transform: translateY(-2px); }
.nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--primary); cursor: pointer; }

/* ============ Hero ============ */
.hero {
  position: relative; overflow: hidden;
  background: var(--grad);
  color: #fff; text-align: center;
  padding: 96px 20px 116px;
}
.particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute; border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  animation: floatUp 8s ease-in-out infinite;
}
@keyframes floatUp {
  0% { transform: translateY(0) scale(1); opacity: 0.1; }
  30% { opacity: 0.8; }
  100% { transform: translateY(-320px) scale(0.3); opacity: 0; }
}
.hero-title { font-size: 46px; font-weight: 900; letter-spacing: 1px; text-shadow: 0 4px 18px rgba(0, 0, 0, 0.25); }
.hero-sub { margin-top: 16px; font-size: 18px; color: rgba(255, 255, 255, 0.92); }
.search-box {
  margin: 34px auto 0; max-width: 620px; display: flex; align-items: center;
  background: #fff; border-radius: 999px; padding: 7px 7px 7px 24px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
}
.search-box input {
  flex: 1; border: none; outline: none; font-size: 16px; color: var(--text);
  background: transparent; min-width: 0;
}
.search-box button {
  width: 48px; height: 48px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--grad); color: #fff; font-size: 20px; flex-shrink: 0;
  transition: transform .2s;
}
.search-box button:hover { transform: scale(1.06); }
.hero-stats { margin-top: 44px; display: flex; justify-content: center; gap: 64px; flex-wrap: wrap; }
.hero-stat .num { font-size: 34px; font-weight: 900; font-variant-numeric: tabular-nums; }
.hero-stat .lbl { font-size: 14px; color: rgba(255, 255, 255, 0.85); margin-top: 4px; }
.search-tip {
  position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px);
  background: var(--primary); color: #fff; padding: 12px 26px; border-radius: 999px;
  font-size: 14px; opacity: 0; pointer-events: none; transition: all .3s; z-index: 99;
  box-shadow: 0 10px 30px rgba(30, 58, 138, 0.4);
}
.search-tip.show { opacity: 1; transform: translate(-50%, 0); }

/* ============ 通用区块 ============ */
.section { padding: 74px 0; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head h2 { font-size: 32px; font-weight: 900; color: var(--text); }
.section-head h2::after {
  content: ""; display: block; width: 64px; height: 5px; border-radius: 999px;
  background: var(--grad); margin: 14px auto 0;
}
.section-head p { color: var(--muted); margin-top: 12px; font-size: 15px; }

/* ============ 视频卡片 ============ */
.video-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.video-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); cursor: pointer;
  transition: transform .25s, box-shadow .25s;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.cover { position: relative; }
.cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.play-btn {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.92); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; padding-left: 4px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
  transition: transform .2s;
}
.video-card:hover .play-btn { transform: translate(-50%, -50%) scale(1.12); }
.dur-badge {
  position: absolute; right: 10px; bottom: 10px;
  background: rgba(15, 23, 42, 0.82); color: #fff;
  font-size: 12px; padding: 3px 9px; border-radius: 8px; font-variant-numeric: tabular-nums;
}
.v-info { padding: 14px 16px 16px; }
.v-title { font-size: 15px; font-weight: 700; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.v-desc { font-size: 13px; color: var(--muted); margin-top: 6px; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.v-meta { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.v-avatar { width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--line); }
.v-meta-txt { display: flex; flex-direction: column; }
.v-creator { font-size: 13px; font-weight: 600; color: var(--text); }
.v-stats { font-size: 12px; color: var(--muted); }

/* ============ 明星创作者 ============ */
.creator-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 22px;
}
.creator-card {
  background: var(--card); border-radius: var(--radius); padding: 26px 14px;
  text-align: center; box-shadow: var(--shadow); transition: transform .25s;
}
.creator-card:hover { transform: translateY(-6px); }
.c-avatar-wrap { position: relative; width: 78px; margin: 0 auto; }
.c-avatar {
  width: 78px; height: 78px; border-radius: 50%; margin: 0 auto;
  border: 3px solid transparent;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad) border-box;
}
.c-star {
  position: absolute; right: -4px; bottom: 2px; font-size: 20px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}
.c-name { margin-top: 12px; font-size: 15px; font-weight: 700; }
.c-badge {
  display: inline-block; margin-top: 8px; padding: 3px 12px; border-radius: 999px;
  background: rgba(30, 58, 138, 0.08); color: var(--primary); font-size: 12px; font-weight: 600;
}
.c-fans { margin-top: 8px; font-size: 13px; color: var(--muted); }

/* ============ 平台特色 ============ */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feat-card {
  background: var(--card); border-radius: var(--radius); padding: 28px 22px;
  box-shadow: var(--shadow); transition: transform .25s;
}
.feat-card:hover { transform: translateY(-6px); }
.feat-icon {
  width: 56px; height: 56px; border-radius: 16px; background: var(--grad);
  display: flex; align-items: center; justify-content: center; font-size: 26px;
  box-shadow: 0 8px 18px rgba(30, 58, 138, 0.28);
}
.feat-card h4 { margin-top: 16px; font-size: 17px; font-weight: 700; }
.feat-card p { margin-top: 8px; font-size: 13.5px; color: var(--muted); }

/* ============ 数据统计区 ============ */
.stats-band {
  background: var(--grad); color: #fff; padding: 70px 0; text-align: center;
  position: relative; overflow: hidden;
}
.stats-band::before {
  content: "🎣"; position: absolute; right: 6%; top: 18%;
  font-size: 90px; opacity: 0.12; transform: rotate(-18deg);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat-num { font-size: 44px; font-weight: 900; font-variant-numeric: tabular-nums; text-shadow: 0 4px 14px rgba(0, 0, 0, 0.22); }
.stat-lbl { font-size: 15px; color: rgba(255, 255, 255, 0.88); margin-top: 8px; }

/* ============ 用户评价 ============ */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testi-card {
  background: var(--card); border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow); position: relative;
}
.testi-card::before {
  content: "❝"; position: absolute; top: 12px; right: 20px;
  font-size: 44px; color: rgba(30, 58, 138, 0.12); font-weight: 900;
}
.testi-head { display: flex; align-items: center; gap: 12px; }
.testi-avatar { width: 48px; height: 48px; border-radius: 50%; }
.testi-head h4 { font-size: 15px; font-weight: 700; }
.stars { margin-top: 3px; }
.star { color: #d1d5db; font-size: 14px; }
.star.on { color: var(--gold); }
.testi-text { margin-top: 14px; font-size: 14px; color: #475569; }

/* ============ 成功故事 ============ */
.story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.story-card {
  background: var(--card); border-radius: var(--radius); padding: 26px 24px;
  box-shadow: var(--shadow); border-top: 5px solid transparent;
  border-image: var(--grad) 1; transition: transform .25s;
}
.story-card:hover { transform: translateY(-6px); }
.story-title { font-size: 17px; font-weight: 800; color: var(--primary); }
.story-desc { margin-top: 10px; font-size: 14px; color: var(--muted); }

/* ============ APP 展示区 ============ */
.app-wrap { display: flex; align-items: center; gap: 60px; }
.app-copy { flex: 1.2; }
.app-copy h2 { font-size: 32px; font-weight: 900; }
.app-copy > p { color: var(--muted); margin-top: 12px; font-size: 15px; }
.app-points { margin-top: 28px; display: flex; flex-direction: column; gap: 20px; }
.app-point { display: flex; gap: 16px; align-items: flex-start; }
.app-point-icon {
  width: 48px; height: 48px; border-radius: 14px; background: var(--grad);
  display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(30, 58, 138, 0.3);
}
.app-point h4 { font-size: 16px; font-weight: 700; }
.app-point p { font-size: 13.5px; color: var(--muted); margin-top: 3px; }
.phone {
  width: 268px; height: 550px; border-radius: 40px; flex-shrink: 0;
  background: #0f172a; padding: 12px;
  box-shadow: 0 30px 60px rgba(30, 58, 138, 0.35);
  position: relative;
}
.phone-notch {
  position: absolute; top: 22px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 22px; border-radius: 999px; background: #0f172a; z-index: 2;
}
.phone-screen {
  width: 100%; height: 100%; border-radius: 30px; overflow: hidden;
  background: var(--grad);
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }

/* ============ 页脚 ============ */
.footer { background: #0d1735; color: #cbd5e1; padding: 60px 0 26px; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand .logo { color: #fff; }
.footer-brand p { margin-top: 14px; font-size: 13.5px; color: #94a3b8; max-width: 300px; }
.footer h5 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 13.5px; color: #94a3b8; transition: color .2s; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(148, 163, 184, 0.2);
  text-align: center; font-size: 13px; color: #64748b;
}

/* ============ 内页 ============ */
.page-hero {
  background: var(--grad); color: #fff; text-align: center; padding: 70px 20px;
}
.page-hero h1 { font-size: 36px; font-weight: 900; }
.page-hero p { margin-top: 12px; font-size: 15px; color: rgba(255, 255, 255, 0.9); }
.filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin: 34px 0 30px; }
.filter-btn {
  padding: 9px 22px; border-radius: 999px; border: 1.5px solid var(--line);
  background: #fff; color: #475569; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--primary-2); color: var(--primary); }
.filter-btn.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(30, 58, 138, 0.3); }
.about-body { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 44px; align-items: start; }
.about-card { background: var(--card); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.about-card h3 { font-size: 20px; font-weight: 800; color: var(--primary); margin-bottom: 14px; }
.about-card p { font-size: 14.5px; color: #475569; margin-bottom: 12px; }
.about-values { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 10px; }
.about-value {
  background: rgba(30, 58, 138, 0.05); border-radius: 14px; padding: 18px;
  text-align: center;
}
.about-value .ico { font-size: 28px; }
.about-value h4 { font-size: 15px; font-weight: 700; margin-top: 8px; }
.about-value p { font-size: 12.5px; color: var(--muted); margin: 6px 0 0; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .creator-grid { grid-template-columns: repeat(3, 1fr); }
  .testi-grid, .story-grid { grid-template-columns: repeat(2, 1fr); }
  .about-body { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 18px 24px; gap: 16px;
    box-shadow: 0 18px 30px rgba(30, 58, 138, 0.15);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-actions { margin-left: auto; }
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 32px; }
  .hero-stats { gap: 30px; }
  .app-wrap { flex-direction: column; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .video-grid { gap: 12px; }
  .v-title { font-size: 13.5px; }
  .creator-grid, .testi-grid, .story-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .stat-num { font-size: 32px; }
  .phone { width: 230px; height: 480px; }
}