/* =========================================================
   黑料社 · 设计系统 style.css
   视觉概念：「午夜吃瓜电台」
   - 暗夜墨色底 #0B0B13（专业、冷静、聚焦内容）
   - 西瓜红→蜜桃橙渐变 #FF4D7D→#FF9E5E（可爱、热辣、抓眼球）
   - 薄荷绿 #3DF0B4 点缀（新鲜、可信、清爽对比）
   - 大圆角 22px + 毛玻璃 + 霓虹辉光（现代、大气）
   ========================================================= */

/* ---------- 1. Reset & Tokens ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* 色板 */
  --bg: #0B0B13;
  --bg-soft: #12121E;
  --card: #171724;
  --card-2: #1E1E30;
  --line: rgba(255, 255, 255, .08);
  --line-strong: rgba(255, 255, 255, .16);
  --text: #F4F2FB;
  --muted: #A6A3BC;
  --faint: #6A6888;
  --accent: #FF4D7D;
  --accent-2: #FF9E5E;
  --sun: #FFB84D;
  --mint: #3DF0B4;
  --rind: #2EBD85;
  --danger: #FF3B6B;

  /* 渐变 */
  --grad: linear-gradient(135deg, #FF4D7D 0%, #FF8E5E 55%, #FFB84D 100%);
  --grad-mint: linear-gradient(135deg, #3DF0B4, #7CFFD9);

  /* 字体 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;

  /* 圆角 / 阴影 */
  --radius: 22px;
  --radius-sm: 14px;
  --radius-xs: 10px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  --glow: 0 0 0 1px rgba(255, 77, 125, .35), 0 18px 50px rgba(255, 77, 125, .22);
  --header-h: 72px;
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景氛围光 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60vw 42vh at 82% -6%, rgba(255, 77, 125, .16), transparent 60%),
    radial-gradient(55vw 40vh at -10% 24%, rgba(255, 158, 94, .10), transparent 62%),
    radial-gradient(50vw 38vh at 55% 112%, rgba(61, 240, 180, .08), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .5;
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; }
::selection { background: rgba(255, 77, 125, .4); color: #fff; }

:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 6px; }

.container { width: min(1200px, 100% - 48px); margin-inline: auto; }

/* 等宽数字 */
.num, .rank-no, .heat, .stat-num { font-variant-numeric: tabular-nums; }

/* ---------- 2. 通用区块 ---------- */
.section { padding: clamp(56px, 9vw, 104px) 0; position: relative; }
.section.tight { padding: clamp(40px, 6vw, 72px) 0; }

.section-head { max-width: 720px; margin-bottom: clamp(28px, 4vw, 44px); }
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .18em;
  color: var(--mint); text-transform: uppercase;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(61, 240, 180, .08);
  border: 1px solid rgba(61, 240, 180, .22);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.eyebrow.hot { color: var(--accent); background: rgba(255, 77, 125, .08); border-color: rgba(255, 77, 125, .25); }
.eyebrow.hot::before { background: var(--accent); box-shadow: 0 0 12px var(--accent); }

h1, h2, h3, h4 { font-weight: 900; line-height: 1.22; letter-spacing: -.01em; }
.section-title { font-size: clamp(26px, 4.2vw, 40px); }
.section-title .hl {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-bottom: 2px;
}
.section-sub { color: var(--muted); margin-top: 14px; font-size: 15.5px; max-width: 640px; }
.section-head.center .section-sub { margin-inline: auto; }

/* ---------- 3. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 28px; border-radius: 999px;
  font-weight: 700; font-size: 15.5px; line-height: 1;
  white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease;
  will-change: transform;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 12px 30px rgba(255, 77, 125, .38);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 42px rgba(255, 77, 125, .5); }
.btn-ghost {
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--line-strong); color: var(--text);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: rgba(255, 255, 255, .35); transform: translateY(-2px); }
.btn-mint { background: var(--grad-mint); color: #06281C; box-shadow: 0 12px 30px rgba(61, 240, 180, .3); }
.btn-mint:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(61, 240, 180, .42); }
.btn-sm { padding: 10px 18px; font-size: 13.5px; }
.btn-lg { padding: 17px 34px; font-size: 16.5px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- 4. 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(11, 11, 19, .78);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .35);
}
.header-inner { display: flex; align-items: center; gap: 28px; width: 100%; }

.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { width: 40px; height: 40px; border-radius: 12px; box-shadow: 0 6px 18px rgba(255, 77, 125, .35); }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-size: 20px; font-weight: 900; letter-spacing: .02em; }
.logo-name em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo-tag { font-size: 10.5px; color: var(--faint); letter-spacing: .3em; font-weight: 600; }

.nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative; padding: 9px 15px; border-radius: 999px;
  font-size: 14.5px; font-weight: 600; color: var(--muted);
  transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, .06); }
.nav-links a.active { color: #fff; background: rgba(255, 77, 125, .14); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px;
  transform: translateX(-50%);
  width: 14px; height: 3px; border-radius: 99px; background: var(--grad);
}
.nav-cta { margin-left: 12px; }

.nav-toggle {
  display: none; margin-left: auto;
  width: 44px; height: 44px; border-radius: 12px;
  background: rgba(255, 255, 255, .06); border: 1px solid var(--line);
  position: relative; z-index: 5;
}
.nav-toggle span {
  position: absolute; left: 12px; right: 12px; height: 2.5px; border-radius: 99px;
  background: var(--text); transition: transform .3s ease, opacity .3s ease, top .3s ease;
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 28px; }
.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- 5. Hero（首页） ---------- */
.hero { padding: calc(var(--header-h) + clamp(40px, 8vw, 90px)) 0 clamp(48px, 7vw, 80px); position: relative; }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: clamp(32px, 5vw, 64px); align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  color: var(--mint);
  background: rgba(61, 240, 180, .08);
  border: 1px solid rgba(61, 240, 180, .25);
  margin-bottom: 22px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(61, 240, 180, .6); } 50% { box-shadow: 0 0 0 7px rgba(61, 240, 180, 0); } }

.hero-title {
  font-size: clamp(34px, 5.6vw, 60px);
  font-family: var(--font-serif);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: .01em;
}
.hero-title .grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-title .wave { display: inline-block; animation: floaty 3s ease-in-out infinite; }
@keyframes floaty { 0%, 100% { transform: translateY(0) rotate(-6deg); } 50% { transform: translateY(-8px) rotate(4deg); } }

.hero-sub { margin-top: 20px; color: var(--muted); font-size: clamp(15px, 1.6vw, 17.5px); max-width: 520px; }
.hero-actions { margin-top: 30px; }
.hero-note { margin-top: 14px; font-size: 12.5px; color: var(--faint); display: flex; align-items: center; gap: 6px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin-top: 40px; max-width: 560px;
}
.stat {
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 12px;
  backdrop-filter: blur(8px);
}
.stat-num { font-size: clamp(20px, 2.6vw, 28px); font-weight: 900; }
.stat-num .unit { font-size: .6em; color: var(--accent); }
.stat-label { font-size: 12px; color: var(--faint); margin-top: 2px; }

.hero-media { position: relative; }
.hero-media img {
  width: 100%; border-radius: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line-strong);
}
.hero-media .float-card {
  position: absolute;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: 16px;
  background: rgba(23, 23, 36, .82);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  font-size: 13px; font-weight: 600;
  animation: floaty 4.5s ease-in-out infinite;
}
.hero-media .float-card .ic { font-size: 20px; }
.hero-media .float-card b { color: var(--mint); }
.hero-media .fc-1 { top: -16px; right: 6%; animation-delay: .4s; }
.hero-media .fc-2 { bottom: 10%; left: -18px; animation-delay: 1.2s; }

/* 实时滚动条 */
.ticker {
  margin-top: clamp(28px, 4vw, 44px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; align-items: center;
  box-shadow: var(--shadow);
}
.ticker-label {
  flex-shrink: 0;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 22px;
  background: var(--grad); color: #fff;
  font-size: 14px; font-weight: 800; letter-spacing: .08em;
}
.ticker-label .flame { animation: flame 1.6s ease-in-out infinite; display: inline-block; }
@keyframes flame { 0%, 100% { transform: scale(1) rotate(-4deg); } 50% { transform: scale(1.25) rotate(6deg); } }
.ticker-view { flex: 1; overflow: hidden; position: relative; }
.ticker-track { display: inline-flex; gap: 48px; white-space: nowrap; padding: 15px 0; animation: marquee 26s linear infinite; }
.ticker-view:hover .ticker-track { animation-play-state: paused; }
.ticker-track a { font-size: 14px; color: var(--muted); transition: color .2s; }
.ticker-track a:hover { color: var(--text); }
.ticker-track a b { color: var(--accent); margin-right: 6px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 6. 标签页 & 筛选 Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 9px 18px; border-radius: 999px;
  font-size: 13.5px; font-weight: 600;
  color: var(--muted);
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line);
  transition: all .22s ease;
}
.chip:hover { color: var(--text); border-color: var(--line-strong); transform: translateY(-1px); }
.chip.active {
  background: var(--grad); color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(255, 77, 125, .3);
}
.chip-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.chip-row .chips { flex: 1; }

/* ---------- 7. 热榜列表 ---------- */
.rank-list { display: grid; gap: 14px; }
.rank-item {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 18px; align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 22px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.rank-item:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 77, 125, .4);
  box-shadow: var(--glow);
}
.rank-no {
  font-size: 30px; font-weight: 900; text-align: center;
  background: linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,0));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-family: var(--font-serif);
}
.rank-item:nth-child(1) .rank-no { color: var(--accent); background: var(--grad); -webkit-background-clip: text; background-clip: text; }
.rank-item:nth-child(2) .rank-no { color: var(--sun); }
.rank-item:nth-child(3) .rank-no { color: var(--mint); }
.rank-main { min-width: 0; }
.tag {
  display: inline-flex; align-items: center;
  font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: rgba(255, 77, 125, .12); color: var(--accent);
  border: 1px solid rgba(255, 77, 125, .25);
  flex-shrink: 0; line-height: 1.5;
}
.tag.mint { background: rgba(61, 240, 180, .1); color: var(--mint); border-color: rgba(61, 240, 180, .25); }
.tag.sun { background: rgba(255, 184, 77, .1); color: var(--sun); border-color: rgba(255, 184, 77, .25); }
.tag.blue { background: rgba(122, 148, 255, .1); color: #7A94FF; border-color: rgba(122, 148, 255, .25); }
.rank-title { font-size: 16.5px; font-weight: 700; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.rank-title .tag {
  font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: rgba(255, 77, 125, .12); color: var(--accent);
  border: 1px solid rgba(255, 77, 125, .25);
  flex-shrink: 0;
}
.rank-title .tag.mint { background: rgba(61, 240, 180, .1); color: var(--mint); border-color: rgba(61, 240, 180, .25); }
.rank-title .tag.sun { background: rgba(255, 184, 77, .1); color: var(--sun); border-color: rgba(255, 184, 77, .25); }
.rank-title .tag.blue { background: rgba(122, 148, 255, .1); color: #7A94FF; border-color: rgba(122, 148, 255, .25); }
.rank-title .hot {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; color: var(--accent); font-weight: 800;
}
.rank-title .hot.up { color: var(--mint); }
.rank-meta { display: flex; gap: 16px; margin-top: 6px; font-size: 12.5px; color: var(--faint); flex-wrap: wrap; }
.rank-heat { text-align: right; min-width: 120px; }
.heat-num { font-size: 20px; font-weight: 900; }
.heat-num small { font-size: 12px; color: var(--faint); font-weight: 600; }
.heat-bar { height: 6px; border-radius: 99px; background: rgba(255, 255, 255, .07); margin-top: 8px; overflow: hidden; }
.heat-bar i { display: block; height: 100%; border-radius: 99px; background: var(--grad); width: 0; transition: width 1.2s cubic-bezier(.2, .8, .2, 1); }
.rank-play {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: #fff;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line-strong);
  padding: 9px 16px; border-radius: 999px;
  transition: all .22s ease;
}
.rank-play:hover { background: var(--grad); border-color: transparent; box-shadow: 0 8px 20px rgba(255, 77, 125, .35); }

/* ---------- 8. 视频卡片 ---------- */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.video-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  cursor: pointer;
}
.video-card:hover { transform: translateY(-5px); border-color: rgba(255, 77, 125, .4); box-shadow: var(--glow); }
.video-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.video-thumb .bg { position: absolute; inset: 0; background: linear-gradient(135deg, var(--tc1, #FF4D7D), var(--tc2, #FF9E5E)); opacity: .9; }
.video-thumb .bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(60% 60% at 80% 20%, rgba(255, 255, 255, .35), transparent 55%),
    radial-gradient(70% 70% at 12% 90%, rgba(0, 0, 0, .35), transparent 60%);
}
.video-thumb .emoji {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: clamp(44px, 5vw, 60px);
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, .35));
  transition: transform .3s ease;
}
.video-card:hover .emoji { transform: scale(1.14) rotate(-6deg); }
.video-thumb .play {
  position: absolute; inset: 0; margin: auto;
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(11, 11, 19, .55);
  border: 2px solid rgba(255, 255, 255, .6);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  opacity: 0; transform: scale(.8);
  transition: all .25s ease;
}
.video-thumb .play::after { content: ""; width: 0; height: 0; margin-left: 4px; border-left: 14px solid #fff; border-top: 9px solid transparent; border-bottom: 9px solid transparent; }
.video-card:hover .play { opacity: 1; transform: scale(1); }
.video-duration {
  position: absolute; right: 12px; bottom: 12px;
  font-size: 12px; font-weight: 700; color: #fff;
  background: rgba(11, 11, 19, .7); padding: 3px 9px; border-radius: 8px;
  backdrop-filter: blur(4px);
}
.video-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.video-body .tag { align-self: flex-start; }
.video-title { font-size: 15.5px; font-weight: 700; line-height: 1.45; }
.video-meta { display: flex; justify-content: space-between; align-items: center; color: var(--faint); font-size: 12.5px; margin-top: auto; }
.video-meta .views b { color: var(--text); }

/* ---------- 9. 话题云 ---------- */
.topic-cloud { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.topic-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px;
  font-size: 14.5px; font-weight: 700;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line-strong);
  transition: all .22s ease;
}
.topic-chip .n { color: var(--faint); font-size: 12px; font-weight: 600; }
.topic-chip:hover { border-color: transparent; background: var(--grad); color: #fff; transform: translateY(-3px) scale(1.03); box-shadow: 0 12px 26px rgba(255, 77, 125, .35); }
.topic-chip:hover .n { color: rgba(255, 255, 255, .8); }

/* ---------- 10. 功能特性 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform .25s ease, border-color .25s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: -42px; right: -42px;
  width: 110px; height: 110px; border-radius: 50%;
  background: var(--grad); opacity: .14; filter: blur(10px);
}
.feature-card:hover { transform: translateY(-5px); border-color: rgba(61, 240, 180, .4); }
.feature-ic { font-size: 34px; margin-bottom: 16px; display: inline-block; filter: drop-shadow(0 8px 14px rgba(0, 0, 0, .4)); }
.feature-title { font-size: 17px; margin-bottom: 8px; }
.feature-text { font-size: 13.5px; color: var(--muted); }

/* ---------- 11. CTA 横幅 ---------- */
.cta-band {
  position: relative;
  border-radius: 32px;
  background:
    radial-gradient(80% 120% at 85% -20%, rgba(255, 255, 255, .22), transparent 50%),
    var(--grad);
  padding: clamp(44px, 7vw, 72px) clamp(28px, 5vw, 64px);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(255, 77, 125, .35);
}
.cta-band .melon {
  position: absolute; right: -30px; bottom: -40px; font-size: clamp(120px, 18vw, 190px);
  opacity: .22; transform: rotate(-14deg); pointer-events: none;
}
.cta-band h2 { font-size: clamp(26px, 4vw, 40px); color: #fff; max-width: 640px; }
.cta-band p { color: rgba(255, 255, 255, .86); margin-top: 12px; max-width: 560px; font-size: 15.5px; }
.cta-band .btn-row { margin-top: 26px; }
.cta-band .btn-white { background: #fff; color: var(--accent); }
.cta-band .btn-white:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(0, 0, 0, .25); }
.cta-band .btn-line { border: 1.5px solid rgba(255, 255, 255, .7); color: #fff; }
.cta-band .btn-line:hover { background: rgba(255, 255, 255, .14); transform: translateY(-2px); }

/* ---------- 12. 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); background: rgba(9, 9, 16, .6); padding: 64px 0 28px; margin-top: 20px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 36px; }
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 14px; max-width: 320px; }
.footer-col h4 { font-size: 14px; letter-spacing: .1em; margin-bottom: 16px; color: var(--text); }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--muted); font-size: 13.5px; transition: color .2s, padding-left .2s; }
.footer-col a:hover { color: var(--mint); padding-left: 4px; }
.footer-keywords { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-keywords a {
  font-size: 12px; color: var(--faint);
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
  transition: all .2s;
}
.footer-keywords a:hover { color: var(--mint); border-color: rgba(61, 240, 180, .4); }
.footer-bottom {
  margin-top: 44px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--faint);
}
.footer-bottom a { color: var(--faint); }
.footer-bottom a:hover { color: var(--mint); }
.disclaimer { margin-top: 16px; font-size: 11.5px; color: rgba(166, 163, 188, .6); line-height: 1.8; }

/* ---------- 13. 弹窗 / Toast / 回顶 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  padding: 24px;
  opacity: 0; visibility: hidden;
  transition: opacity .28s ease, visibility .28s;
}
.modal.open { opacity: 1; visibility: visible; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(5, 5, 10, .82);
  backdrop-filter: blur(10px);
}
.modal-panel {
  position: relative; width: min(680px, 100%);
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  box-shadow: var(--shadow);
  transform: translateY(26px) scale(.96);
  transition: transform .3s cubic-bezier(.2, .9, .2, 1.1);
  overflow: hidden;
}
.modal.open .modal-panel { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(11, 11, 19, .6); border: 1px solid var(--line-strong);
  color: #fff; font-size: 17px; line-height: 1;
  display: grid; place-items: center;
  transition: background .2s, transform .2s;
}
.modal-close:hover { background: var(--accent); transform: rotate(90deg); }
.modal-screen { aspect-ratio: 16 / 9; position: relative; background: linear-gradient(135deg, var(--mc1, #FF4D7D), var(--mc2, #FF9E5E)); display: grid; place-items: center; }
.modal-screen .emoji { font-size: 72px; filter: drop-shadow(0 12px 24px rgba(0,0,0,.4)); animation: floaty 3s ease-in-out infinite; }
.modal-screen .big-play {
  width: 76px; height: 76px; border-radius: 50%;
  background: rgba(11, 11, 19, .5); border: 3px solid rgba(255, 255, 255, .75);
  display: grid; place-items: center; margin-top: 18px;
  animation: pulse 2.2s infinite;
}
.modal-screen .big-play::after { content: ""; width: 0; height: 0; margin-left: 6px; border-left: 22px solid #fff; border-top: 14px solid transparent; border-bottom: 14px solid transparent; }
.modal-info { padding: 22px 26px 26px; }
.modal-info .tag { margin-bottom: 10px; }
.modal-info h3 { font-size: 19px; margin-bottom: 10px; }
.modal-info p { color: var(--muted); font-size: 13.5px; }
.modal-info .btn { margin-top: 16px; }

.toast {
  position: fixed; left: 50%; bottom: 32px; z-index: 300;
  transform: translate(-50%, 20px);
  background: var(--card-2); color: var(--text);
  border: 1px solid var(--line-strong);
  padding: 13px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden;
  transition: all .3s ease;
}
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.toast b { color: var(--mint); }

.backtop {
  position: fixed; right: 22px; bottom: 22px; z-index: 150;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--card-2); border: 1px solid var(--line-strong);
  color: var(--text); font-size: 18px;
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .3s ease;
  box-shadow: var(--shadow);
}
.backtop.show { opacity: 1; visibility: visible; transform: translateY(0); }
.backtop:hover { background: var(--grad); border-color: transparent; }

/* ---------- 14. 子页面 Hero ---------- */
.page-hero {
  padding: calc(var(--header-h) + clamp(44px, 8vw, 96px)) 0 clamp(30px, 5vw, 52px);
  position: relative;
}
.crumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--faint); margin-bottom: 18px; flex-wrap: wrap; }
.crumb a { color: var(--muted); transition: color .2s; }
.crumb a:hover { color: var(--mint); }
.crumb .sep { opacity: .5; }
.page-title { font-size: clamp(32px, 5vw, 54px); font-family: var(--font-serif); font-weight: 900; }
.page-title .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-sub { color: var(--muted); margin-top: 16px; font-size: clamp(14.5px, 1.6vw, 17px); max-width: 640px; }

/* ---------- 15. 榜单页 ---------- */
.board-meta {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 24px; margin-bottom: 28px;
}
.board-meta .live { display: inline-flex; align-items: center; gap: 8px; color: var(--mint); font-size: 13.5px; font-weight: 700; }
.board-meta .live .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--mint); animation: pulse 1.8s infinite; }
.board-meta .txt { color: var(--faint); font-size: 13px; }
.board-meta .update { margin-left: auto; font-size: 12.5px; color: var(--faint); }

.leaderboard { display: grid; gap: 14px; }
.board-item {
  display: grid; grid-template-columns: 92px 1fr auto;
  gap: 20px; align-items: center;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 24px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.board-item:hover { transform: translateY(-3px); border-color: rgba(255, 77, 125, .4); box-shadow: var(--glow); }
.board-medal {
  width: 64px; height: 64px; border-radius: 20px;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-weight: 900; font-size: 26px;
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line-strong);
  color: var(--muted);
}
.board-item:nth-child(1) .board-medal { background: var(--grad); color: #fff; box-shadow: 0 10px 26px rgba(255, 77, 125, .4); }
.board-item:nth-child(2) .board-medal { color: var(--sun); border-color: rgba(255, 184, 77, .4); }
.board-item:nth-child(3) .board-medal { color: var(--mint); border-color: rgba(61, 240, 180, .4); }
.board-title { font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.board-desc { color: var(--muted); font-size: 13.5px; margin-top: 5px; max-width: 560px; }
.board-side { text-align: right; display: flex; flex-direction: column; gap: 8px; align-items: flex-end; min-width: 150px; }
.board-side .heat { display: flex; align-items: baseline; gap: 5px; font-size: 19px; font-weight: 900; }
.board-side .heat small { font-size: 11.5px; color: var(--faint); font-weight: 600; }
.board-side .trend { font-size: 12px; color: var(--faint); }
.board-side .trend.up { color: var(--mint); }
.board-side .trend.down { color: var(--accent); }

/* ---------- 16. 图文文章卡片（料镜观察） ---------- */
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.article-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
  display: flex; flex-direction: column; gap: 12px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.article-card:hover { transform: translateY(-5px); border-color: rgba(61, 240, 180, .4); box-shadow: 0 18px 50px rgba(61, 240, 180, .12); }
.article-card .ic { font-size: 30px; }
.article-card h3 { font-size: 16.5px; line-height: 1.5; }
.article-card p { font-size: 13.5px; color: var(--muted); flex: 1; }
.article-card .more { font-size: 13px; font-weight: 700; color: var(--mint); display: inline-flex; align-items: center; gap: 6px; }
.article-card .more::after { content: "→"; transition: transform .2s; }
.article-card:hover .more::after { transform: translateX(4px); }

/* ---------- 17. 话题广场页 ---------- */
.search-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 8px 10px 8px 22px;
  max-width: 560px; margin-bottom: 26px;
  transition: border-color .2s, box-shadow .2s;
}
.search-bar:focus-within { border-color: rgba(255, 77, 125, .55); box-shadow: 0 0 0 4px rgba(255, 77, 125, .12); }
.search-bar .ic { color: var(--faint); font-size: 16px; }
.search-bar input { flex: 1; background: none; border: none; outline: none; color: var(--text); font: inherit; font-size: 14.5px; }
.search-bar input::placeholder { color: var(--faint); }
.search-bar .btn { padding: 11px 22px; }

.filter-hidden { display: none !important; }

/* ---------- 18. APP 下载页 ---------- */
.app-hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(32px, 5vw, 70px); align-items: center; }
.app-hero .hero-title { font-size: clamp(32px, 4.6vw, 48px); }
.dl-card { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.dl-btn {
  display: inline-flex; align-items: center; gap: 14px;
  background: var(--card-2); border: 1px solid var(--line-strong);
  border-radius: 18px; padding: 14px 22px;
  transition: all .22s ease;
}
.dl-btn:hover { transform: translateY(-3px); border-color: rgba(255, 77, 125, .5); box-shadow: var(--glow); }
.dl-btn .ic { font-size: 28px; }
.dl-btn .tx { display: flex; flex-direction: column; line-height: 1.25; }
.dl-btn .tx small { font-size: 11px; color: var(--faint); font-weight: 600; }
.dl-btn .tx b { font-size: 15.5px; font-weight: 800; }
.app-media img { width: min(380px, 88%); margin-inline: auto; border-radius: 30px; box-shadow: var(--shadow); border: 1px solid var(--line-strong); }
.app-tip { margin-top: 16px; font-size: 12.5px; color: var(--faint); }

.feature-big-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature-big {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
  transition: transform .25s ease, border-color .25s ease;
}
.feature-big:hover { transform: translateY(-4px); border-color: rgba(61, 240, 180, .4); }
.feature-big .ic { font-size: 32px; flex-shrink: 0; }
.feature-big h3 { font-size: 17px; margin-bottom: 7px; }
.feature-big p { font-size: 13.5px; color: var(--muted); }

.faq-list { display: grid; gap: 14px; max-width: 860px; margin-inline: auto; }
.faq-item {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-sm); overflow: hidden;
}
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 14px;
  padding: 18px 22px; font-size: 15.5px; font-weight: 700; text-align: left;
  transition: color .2s;
}
.faq-q .arrow { color: var(--mint); font-size: 18px; transition: transform .3s ease; flex-shrink: 0; }
.faq-item.open .faq-q .arrow { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 22px 18px; color: var(--muted); font-size: 13.5px; }

/* ---------- 19. 关于页 ---------- */
.about-story { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(30px, 5vw, 56px); align-items: center; }
.about-story .lead { font-size: clamp(17px, 2vw, 20px); font-weight: 600; line-height: 1.7; color: var(--text); }
.about-story .lead .hl { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about-story p.body { color: var(--muted); margin-top: 16px; font-size: 15px; }
.about-stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; text-align: center;
  transition: transform .25s ease, border-color .25s ease;
}
.contact-card:hover { transform: translateY(-4px); border-color: rgba(255, 77, 125, .4); }
.contact-card .ic { font-size: 34px; margin-bottom: 12px; }
.contact-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.contact-card p { font-size: 13.5px; color: var(--muted); }
.contact-card a.contact-link { display: inline-block; margin-top: 12px; color: var(--mint); font-weight: 700; font-size: 14px; }

/* ---------- 20. 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1024px) {
  .video-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(320px, 84vw);
    background: rgba(13, 13, 22, .96);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--line);
    flex-direction: column; align-items: stretch;
    padding: calc(var(--header-h) + 20px) 24px 24px;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.2, .8, .2, 1);
    margin: 0;
    box-shadow: -20px 0 60px rgba(0, 0, 0, .4);
  }
  .nav.open { transform: translateX(0); }
  .nav-links { flex-direction: column; align-items: stretch; gap: 6px; }
  .nav-links a { padding: 14px 18px; font-size: 16px; border-radius: 14px; }
  .nav-links a.active::after { left: 16px; bottom: auto; top: 50%; transform: translateY(-50%); width: 4px; height: 18px; }
  .nav-cta { margin: 18px 0 0; }
  .nav-cta .btn { width: 100%; }

  .hero-grid, .app-hero, .about-story { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
  .hero-media .fc-2 { left: 0; }
  .app-media { order: -1; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .rank-item { grid-template-columns: 48px 1fr; }
  .rank-heat { display: none; }
  .board-item { grid-template-columns: 72px 1fr; }
  .board-side { display: none; }
  .value-grid, .contact-grid, .feature-big-grid { grid-template-columns: 1fr; }
  .ticker-label { padding: 14px 16px; font-size: 13px; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 36px); }
  .video-grid, .article-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-band { border-radius: 24px; }
  .rank-title { font-size: 15px; }
  .board-title { font-size: 15.5px; }
  .rank-play { padding: 8px 13px; font-size: 12px; }
  .modal-panel { border-radius: 20px; }
  .modal-info { padding: 18px; }
  .hero-media .float-card { font-size: 12px; padding: 10px 13px; }
  .hero-media .fc-1 { top: -10px; right: 2%; }
}

/* ---------- 22. 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}