/* 糖心vlog · 深色星空主题 · 主色 #8b5cf6 */
:root {
  --primary: #8b5cf6;
  --primary-deep: #6d28d9;
  --primary-light: #a78bfa;
  --bg: #0c0918;
  --bg-soft: #14102a;
  --card: #181233;
  --line: rgba(139, 92, 246, .22);
  --text: #ece9fb;
  --muted: #a59ecb;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 28px;
  background: rgba(12, 9, 24, .86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; }
.brand-emoji {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 12px; font-size: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 6px 18px rgba(139, 92, 246, .4);
}
.nav-links { display: flex; gap: 22px; font-size: 14px; color: var(--muted); }
.nav-links a { flex-shrink: 0; }
.nav-links a:hover { color: var(--primary-light); }
.nav-actions { display: flex; gap: 10px; }
.btn-ghost, .btn-main { border: none; cursor: pointer; padding: 8px 20px; border-radius: 999px; font-size: 14px; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn-main {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff; box-shadow: 0 6px 16px rgba(139, 92, 246, .45);
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 90px 24px 70px; text-align: center;
  background:
    radial-gradient(circle at 22% 18%, rgba(139, 92, 246, .32), transparent 46%),
    radial-gradient(circle at 80% 85%, rgba(109, 40, 217, .30), transparent 46%),
    linear-gradient(165deg, #181041 0%, #0c0918 70%);
}
.particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute; bottom: -12px; border-radius: 50%;
  background: #fff; opacity: .55;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  to { transform: translateY(-105vh); opacity: 0; }
}
.hero-inner { position: relative; max-width: 860px; margin: 0 auto; }
.hero-title { font-size: clamp(26px, 4.6vw, 50px); font-weight: 800; line-height: 1.25; }
.grad {
  background: linear-gradient(90deg, var(--primary-light), #c4b5fd);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 16px auto 0; max-width: 640px; color: var(--muted); font-size: 16px; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  max-width: 620px; margin: 30px auto 0;
  background: rgba(255, 255, 255, .07);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 8px 8px 22px; backdrop-filter: blur(8px);
}
.search-box input { flex: 1; border: none; outline: none; background: transparent; color: var(--text); font-size: 15px; }
.search-box input::placeholder { color: var(--muted); }
.search-box button {
  width: 44px; height: 44px; border: none; border-radius: 50%; cursor: pointer;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff; font-size: 18px;
}
.hero-stats { display: flex; justify-content: center; gap: 56px; margin-top: 42px; flex-wrap: wrap; }
.hero-stat { display: flex; flex-direction: column; gap: 2px; }
.hero-stat span {
  font-size: 30px; font-weight: 800;
  background: linear-gradient(90deg, #fff, #c4b5fd);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stat em { font-style: normal; color: var(--muted); font-size: 13px; }

/* ---------- 通用 section ---------- */
.section { max-width: 1200px; margin: 0 auto; padding: 64px 24px; }
.section-title { text-align: center; font-size: 30px; font-weight: 800; margin-bottom: 6px; }
.section-title.left { text-align: left; }
.section-sub { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 34px; }
.section-sub.left { text-align: left; }

/* ---------- 视频网格 ---------- */
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.video-card {
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 18px; overflow: hidden;
  box-shadow: 0 10px 26px rgba(0, 0, 0, .35);
  transition: transform .25s, box-shadow .25s;
}
.video-card:hover { transform: translateY(-6px); box-shadow: 0 16px 34px rgba(109, 40, 217, .28); }
.cover { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; background: #0a0714; }
.cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.video-card:hover .cover img { transform: scale(1.06); }
.play {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(.7);
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; padding-left: 3px;
  border-radius: 50%; background: rgba(139, 92, 246, .9);
  color: #fff; font-size: 18px; opacity: 0; transition: .25s;
}
.video-card:hover .play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.dur {
  position: absolute; right: 10px; bottom: 10px;
  background: rgba(0, 0, 0, .72); padding: 2px 9px;
  border-radius: 7px; font-size: 12px; color: #fff;
}
.v-title {
  padding: 12px 14px 0; font-size: 15px; font-weight: 700; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 45px;
}
.v-desc { padding: 4px 14px 0; font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.v-meta { display: flex; align-items: center; gap: 8px; padding: 10px 14px 14px; font-size: 12px; color: var(--muted); }
.v-avatar { width: 26px; height: 26px; border-radius: 50%; object-fit: cover; }
.v-creator { font-weight: 600; color: var(--text); white-space: nowrap; }
.v-nums { margin-left: auto; white-space: nowrap; }

/* ---------- 创作者 ---------- */
.creators-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.creator-card {
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 18px; padding: 26px 14px; text-align: center;
  transition: transform .25s;
}
.creator-card:hover { transform: translateY(-6px); }
.c-avatar-wrap { position: relative; display: inline-block; }
.c-avatar-wrap img {
  width: 84px; height: 84px; border-radius: 50%; object-fit: cover;
  border: 3px solid var(--primary); padding: 3px; background: var(--bg-soft);
}
.c-badge { position: absolute; top: -6px; right: -8px; font-size: 20px; filter: drop-shadow(0 2px 6px rgba(251, 191, 36, .7)); }
.creator-card h3 { margin-top: 12px; font-size: 16px; }
.c-role { color: var(--muted); font-size: 12px; margin-top: 2px; }
.c-fans {
  display: inline-block; margin-top: 10px; padding: 4px 14px; border-radius: 999px; font-size: 12px;
  background: linear-gradient(135deg, rgba(139, 92, 246, .25), rgba(109, 40, 217, .25));
  color: var(--primary-light);
}

/* ---------- 平台特色 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 18px; padding: 26px 20px; transition: transform .25s;
}
.feature-card:hover { transform: translateY(-6px); }
.f-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px; font-size: 24px; margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(139, 92, 246, .28), rgba(109, 40, 217, .28));
}
.feature-card h3 { font-size: 16px; margin-bottom: 6px; }
.feature-card p { font-size: 13px; color: var(--muted); }

/* ---------- 数据统计带 ---------- */
.stats-band {
  background: linear-gradient(120deg, var(--primary), var(--primary-deep) 60%, #4c1d95);
  padding: 52px 24px;
}
.stats-inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-num { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; color: #fff; text-shadow: 0 4px 18px rgba(0, 0, 0, .25); }
.stat-label { color: rgba(255, 255, 255, .85); font-size: 14px; margin-top: 4px; }

/* ---------- 用户评价 ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.testimonial-card { background: var(--card); border: 1px solid rgba(139, 92, 246, .14); border-radius: 18px; padding: 22px; }
.t-head { display: flex; align-items: center; gap: 12px; }
.t-head img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }
.t-head h4 { font-size: 15px; }
.t-stars { color: #fbbf24; font-size: 13px; letter-spacing: 2px; }
.t-text { margin-top: 14px; font-size: 13.5px; color: var(--muted); }

/* ---------- 成功故事 ---------- */
.stories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.story-card {
  position: relative; background: var(--card);
  border: 1px solid rgba(139, 92, 246, .14); border-radius: 18px;
  padding: 26px 22px; overflow: hidden;
}
.story-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), #c4b5fd);
}
.story-card h3 { font-size: 17px; margin-bottom: 10px; color: var(--primary-light); }
.story-card p { font-size: 14px; color: var(--muted); }

/* ---------- APP 展示区 ---------- */
.app-wrap { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.app-features { display: flex; flex-direction: column; gap: 18px; margin-top: 26px; }
.app-feature {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 16px; padding: 16px 18px;
}
.af-icon { font-size: 26px; flex-shrink: 0; }
.app-feature h4 { font-size: 15px; }
.app-feature p { font-size: 13px; color: var(--muted); }
.phone {
  justify-self: center; position: relative; width: 280px; aspect-ratio: 9 / 19;
  background: #000; border: 10px solid #151029; border-radius: 44px;
  box-shadow: 0 24px 60px rgba(109, 40, 217, .4); overflow: hidden;
}
.phone-notch {
  position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  width: 104px; height: 20px; background: #000; border-radius: 0 0 14px 14px; z-index: 2;
}
.phone img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 页脚 ---------- */
.footer { background: #0a0714; border-top: 1px solid var(--line); padding: 52px 24px 0; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand p { margin-top: 14px; color: var(--muted); font-size: 13.5px; max-width: 340px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: 15px; margin-bottom: 4px; }
.footer-col a { color: var(--muted); font-size: 13.5px; }
.footer-col a:hover { color: var(--primary-light); }
.footer-copy {
  max-width: 1200px; margin: 36px auto 0; padding: 22px 0;
  border-top: 1px solid rgba(139, 92, 246, .14);
  text-align: center; color: var(--muted); font-size: 13px;
}

/* ---------- 内页 hero ---------- */
.page-hero {
  padding: 64px 24px 44px; text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(139, 92, 246, .25), transparent 60%),
    linear-gradient(170deg, #171040, #0c0918);
}
.page-hero h1 { font-size: 34px; font-weight: 800; }
.page-hero p { color: var(--muted); margin-top: 10px; }
.filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 30px; }
.filter-btn {
  padding: 8px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: transparent; color: var(--text); cursor: pointer; font-size: 14px; transition: .2s;
}
.filter-btn:hover { border-color: var(--primary-light); color: var(--primary-light); }
.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  border-color: transparent; color: #fff; box-shadow: 0 6px 16px rgba(139, 92, 246, .4);
}

/* ---------- 关于页 ---------- */
.about-wrap { max-width: 880px; margin: 0 auto; }
.about-block { margin-bottom: 40px; }
.about-block h2 { font-size: 24px; margin-bottom: 14px; color: var(--primary-light); }
.about-block p { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
.value-card {
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 16px; padding: 20px; text-align: center;
}
.value-card .v-ico { font-size: 26px; }
.value-card h3 { font-size: 15px; margin: 8px 0 4px; }
.value-card p { font-size: 12.5px; color: var(--muted); margin: 0; }
.about-nums {
  display: flex; justify-content: space-around; gap: 16px; flex-wrap: wrap;
  background: var(--card); border: 1px solid rgba(139, 92, 246, .14);
  border-radius: 18px; padding: 26px;
}
.about-nums div { text-align: center; }
.about-nums b {
  display: block; font-size: 26px;
  background: linear-gradient(90deg, #fff, #c4b5fd);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.about-nums span { color: var(--muted); font-size: 13px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .creators-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .app-wrap { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav { padding: 12px 16px; }
  .nav-links { gap: 14px; font-size: 13px; overflow-x: auto; }
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .creators-grid { grid-template-columns: repeat(2, 1fr); }
  .stories-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 28px; }
}