/* ============================================
   长株潭媒体导航 · czttv.com
   风格参考 Spaceship：明亮底 + 紫粉渐变 + 大圆角卡片
   ============================================ */

:root {
  --primary: #6d28d9;
  --primary-2: #ec4899;
  --grad: linear-gradient(120deg, #7c3aed 0%, #d946ef 55%, #f43f5e 100%);
  --grad-soft: linear-gradient(120deg, rgba(124,58,237,.12), rgba(244,63,94,.10));
  --bg: #faf9fd;
  --surface: #ffffff;
  --text: #17131f;
  --text-2: #5d5568;
  --text-3: #9a91a8;
  --border: #ece8f4;
  --shadow-sm: 0 1px 2px rgba(23,19,31,.05);
  --shadow-md: 0 8px 28px rgba(103,58,183,.10);
  --shadow-lg: 0 18px 48px rgba(103,58,183,.16);
  --radius: 18px;
  --radius-lg: 26px;
  --max-w: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; letter-spacing: -.5px; }
.section-head p { color: var(--text-3); margin-top: 6px; font-size: 15px; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s;
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--grad); color: #fff;
  display: grid; place-items: center;
  font-size: 20px; font-weight: 700;
  box-shadow: 0 4px 14px rgba(124,58,237,.35);
  flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 16px; font-weight: 800; letter-spacing: -.2px; }
.brand-text em { font-style: normal; font-size: 12px; color: var(--text-3); letter-spacing: .5px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14.5px; color: var(--text-2); font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  background: var(--grad); color: #fff !important;
  padding: 9px 20px; border-radius: 999px; font-weight: 600 !important;
  box-shadow: 0 4px 14px rgba(124,58,237,.30);
  transition: transform .2s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(124,58,237,.40); }
.menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; }
.menu-btn span { width: 22px; height: 2.5px; border-radius: 2px; background: var(--text); transition: .3s; }
.menu-btn.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative; overflow: hidden;
  padding: 92px 0 84px;
  text-align: center;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; }
.blob-1 { width: 480px; height: 480px; background: #ddd1ff; top: -180px; left: -120px; }
.blob-2 { width: 420px; height: 420px; background: #ffd6ec; top: -60px; right: -140px; }
.blob-3 { width: 380px; height: 380px; background: #d1e6ff; bottom: -220px; left: 40%; }
.hero-inner { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; font-size: 13.5px; font-weight: 600;
  color: var(--primary);
  background: var(--surface);
  border: 1px solid #e6dcff;
  padding: 7px 18px; border-radius: 999px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 26px;
}
.hero-title {
  font-size: clamp(40px, 7.5vw, 72px);
  font-weight: 900; letter-spacing: -1.5px; line-height: 1.12;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub {
  max-width: 620px; margin: 20px auto 0;
  color: var(--text-2); font-size: clamp(15px, 2vw, 17.5px);
}
.hero-sub strong { color: var(--primary); font-weight: 800; }

.search-wrap {
  position: relative; max-width: 640px; margin: 36px auto 0;
}
.search-icon {
  position: absolute; left: 22px; top: 50%; transform: translateY(-50%);
  width: 20px; height: 20px; color: var(--text-3); pointer-events: none;
}
#searchInput {
  width: 100%; height: 58px;
  padding: 0 52px;
  font-size: 16px; font-family: inherit; color: var(--text);
  border: 1.5px solid var(--border); border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow-md);
  outline: none; transition: border-color .2s, box-shadow .2s;
  appearance: none; -webkit-appearance: none;
}
#searchInput::placeholder { color: var(--text-3); }
#searchInput:focus { border-color: #c4b5fd; box-shadow: 0 0 0 4px rgba(139,92,246,.14), var(--shadow-md); }
.search-clear {
  position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 50%;
  border: 0; background: #f1edf9; color: var(--text-2);
  font-size: 13px; display: grid; place-items: center;
}
.search-clear:hover { background: #e6def7; }

.hero-chips { margin-top: 18px; display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.chip-label { font-size: 13px; color: var(--text-3); align-self: center; }
.chip {
  border: 1px solid var(--border); background: var(--surface);
  padding: 6px 15px; border-radius: 999px; font-size: 13px; color: var(--text-2);
  transition: all .2s;
}
.chip:hover { border-color: #c4b5fd; color: var(--primary); background: #f6f2ff; transform: translateY(-1px); }

.hero-stats {
  margin-top: 48px;
  display: flex; justify-content: center; gap: clamp(24px, 6vw, 72px);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; align-items: center; }
.stat strong {
  font-size: clamp(26px, 4vw, 36px); font-weight: 900; letter-spacing: -1px;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.stat span { font-size: 13px; color: var(--text-3); margin-top: 2px; }

/* ===== 城市速览 ===== */
.city-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.city-card {
  display: flex; align-items: center; gap: 15px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.city-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #ddd2f5; }
.city-avatar {
  width: 50px; height: 50px; border-radius: 15px; flex: none;
  display: grid; place-items: center;
  font-size: 22px; font-weight: 800; color: #fff;
}
.city-avatar.orange { background: linear-gradient(135deg, #f97316, #fb923c); }
.city-avatar.blue   { background: linear-gradient(135deg, #3b82f6, #60a5fa); }
.city-avatar.teal   { background: linear-gradient(135deg, #14b8a6, #2dd4bf); }
.city-avatar.purple { background: var(--grad); }
.city-card h3 { font-size: 17px; font-weight: 800; }
.city-card p { font-size: 12.5px; color: var(--text-3); margin-top: 1px; }
.city-count {
  margin-left: auto; flex: none;
  font-size: 12px; font-weight: 700; color: var(--primary);
  background: #f3eeff; border-radius: 999px; padding: 4px 11px;
}

/* ===== 目录区 ===== */
.directory { background: linear-gradient(180deg, transparent, #f4f0fb 18%, #f4f0fb 88%, transparent); }
.filter-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; margin-bottom: 26px;
}
.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--border); background: var(--surface);
  padding: 9px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600; color: var(--text-2);
  transition: all .2s;
}
.tab:hover { border-color: #c4b5fd; color: var(--primary); }
.tab.active {
  background: var(--grad); color: #fff; border-color: transparent;
  box-shadow: 0 4px 14px rgba(124,58,237,.30);
}
.result-info { font-size: 13.5px; color: var(--text-3); white-space: nowrap; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

/* ===== 媒体卡片 ===== */
.card {
  position: relative;
  display: flex; flex-direction: column; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s, border-color .22s;
  animation: fadeUp .35s ease both;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #ddd2f5; }

.card-top { display: flex; align-items: flex-start; gap: 13px; }
.card-avatar {
  width: 46px; height: 46px; border-radius: 13px; flex: none;
  display: grid; place-items: center;
  font-size: 19px; font-weight: 800; color: #fff;
}
.card-avatar.c-purple { background: linear-gradient(135deg, #8b5cf6, #d946ef); }
.card-avatar.c-orange { background: linear-gradient(135deg, #f97316, #fbbf24); }
.card-avatar.c-blue   { background: linear-gradient(135deg, #3b82f6, #22d3ee); }
.card-avatar.c-teal   { background: linear-gradient(135deg, #14b8a6, #4ade80); }
.card-avatar.c-rose   { background: linear-gradient(135deg, #f43f5e, #fb7185); }
.card-title { min-width: 0; }
.card-title h3 {
  font-size: 16.5px; font-weight: 800; line-height: 1.35;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card-domain {
  font-size: 12.5px; color: var(--text-3);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  display: block; margin-top: 2px;
}
.card-desc {
  font-size: 13.5px; color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 44px;
}
.card-meta { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.badge {
  font-size: 11.5px; font-weight: 700;
  padding: 3px 10px; border-radius: 999px;
  background: #f3eeff; color: #7c3aed;
}
.badge.b-type { background: #fdf2f8; color: #db2777; }
.badge.b-cat  { background: #eff6ff; color: #2563eb; }
.card-phone {
  margin-left: auto; font-size: 12px; color: var(--text-3);
  font-variant-numeric: tabular-nums;
}
.card-link {
  position: absolute; inset: 0; z-index: 1; border-radius: var(--radius);
}
.card-arrow {
  position: absolute; top: 20px; right: 20px; z-index: 2;
  width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center;
  background: #f3eeff; color: var(--primary);
  font-size: 14px; opacity: 0; transform: translate(-4px, 4px);
  transition: .22s;
}
.card:hover .card-arrow { opacity: 1; transform: none; }

/* ===== 空状态 ===== */
.empty { text-align: center; padding: 70px 0 40px; }
.empty-icon { font-size: 46px; margin-bottom: 12px; }
.empty p { color: var(--text-2); margin-bottom: 20px; }
.btn-ghost {
  border: 1.5px solid var(--border); background: var(--surface);
  padding: 10px 26px; border-radius: 999px; font-weight: 600; color: var(--text-2);
  transition: all .2s;
}
.btn-ghost:hover { border-color: #c4b5fd; color: var(--primary); }

/* ===== 关于 ===== */
.about { padding-top: 20px; }
.about-inner {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center;
}
.about-text h2 { font-size: clamp(24px, 3.5vw, 32px); font-weight: 800; margin-bottom: 16px; letter-spacing: -.5px; }
.about-text p { color: var(--text-2); font-size: 15px; margin-bottom: 12px; }
.about-tip { font-size: 13.5px !important; color: var(--text-3) !important; }
.about-feats { list-style: none; display: grid; gap: 14px; }
.about-feats li {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
  box-shadow: var(--shadow-sm);
}
.about-feats span { font-size: 22px; line-height: 1.4; }
.about-feats strong { font-size: 15px; }
.about-feats p { font-size: 13px; color: var(--text-3); margin: 0; }

/* ===== 页脚 ===== */
.footer {
  background: #171220; color: #cfc8dd;
  padding: 56px 0 40px; margin-top: 40px;
}
.footer-inner { display: grid; gap: 28px; text-align: center; justify-items: center; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-mark { box-shadow: none; }
.footer-brand strong { color: #fff; font-size: 17px; display: block; }
.footer-brand p { font-size: 12.5px; color: #8d839f; }
.footer-links { display: flex; gap: 26px; }
.footer-links a { font-size: 14px; color: #b7aed0; transition: color .2s; }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 12.5px; color: #7c7390; line-height: 1.9; }

/* ===== 回到顶部 ===== */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  border: 0; background: var(--grad); color: #fff;
  font-size: 18px; font-weight: 700;
  box-shadow: 0 8px 22px rgba(124,58,237,.38);
  opacity: 0; pointer-events: none; transform: translateY(12px);
  transition: .28s;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { transform: translateY(-3px); }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .city-cards { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .hero { padding: 64px 0 56px; }
  .nav-links {
    position: fixed; inset: 68px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 10px 24px 18px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: .28s;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { padding: 13px 4px; border-bottom: 1px solid var(--border); font-size: 15px; }
  .nav-links a:last-child { border-bottom: 0; margin-top: 8px; text-align: center; }
  .menu-btn { display: flex; }
  .city-cards { grid-template-columns: 1fr 1fr; gap: 12px; }
  .city-card { padding: 15px; gap: 10px; }
  .city-avatar { width: 42px; height: 42px; font-size: 19px; }
  .grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .tabs { justify-content: center; }
  .result-info { text-align: center; }
  #searchInput { height: 52px; font-size: 15px; }
}
@media (max-width: 460px) {
  .city-cards { grid-template-columns: 1fr; }
  .hero-stats { gap: 26px; }
  .card-phone { display: none; }
}