/* ============================================================
   ST站主播录屏 — 品牌设计系统
   分区：1 变量 / 2 重置 / 3 布局 / 4 文字 / 5 按钮 / 6 头部导航 /
   7 卡片 / 8 Hero / 9 跑马灯 / 10 视频卡 / 11 榜单 / 12 话题文章 /
   13 数据特性 / 14 评价 / 15 CTA下载 / 16 FAQ / 17 提示弹层 /
   18 页脚 / 19 内页页头 / 20 分页 / 21 滚动动效 / 22 响应式 / 23 附加
   ============================================================ */

/* ---------- 1 设计变量 ---------- */
:root {
  --brand: #7c5cff;
  --brand-deep: #5b3df5;
  --brand-soft: #9d85ff;
  --pink: #ff6b9d;
  --orange: #ffb03c;
  --teal: #2dd4bf;
  --sky: #4cc9f0;

  --ink: #2a2140;
  --ink-2: #5e5678;
  --ink-3: #8d86a6;
  --line: #ece7f6;
  --bg: #fffbf7;
  --bg-2: #fff5f9;
  --card: #ffffff;

  --grad-brand: linear-gradient(135deg, #7c5cff 0%, #ff6b9d 100%);
  --grad-sunset: linear-gradient(135deg, #ffb03c 0%, #ff6b9d 100%);
  --grad-aurora: linear-gradient(135deg, #4cc9f0 0%, #7c5cff 55%, #ff6b9d 100%);
  --grad-soft: linear-gradient(160deg, #f4efff 0%, #fff5f9 60%, #fff9f0 100%);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-pill: 999px;

  --sh-1: 0 2px 8px rgba(84, 56, 178, 0.08);
  --sh-2: 0 8px 24px rgba(84, 56, 178, 0.12);
  --sh-3: 0 16px 48px rgba(84, 56, 178, 0.16);
  --sh-4: 0 24px 72px rgba(84, 56, 178, 0.2);
  --sh-glow: 0 8px 32px rgba(124, 92, 255, 0.35);

  --container: 1180px;
  --gutter: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --fs-xs: clamp(0.78rem, 0.75rem + 0.2vw, 0.85rem);
  --fs-sm: clamp(0.88rem, 0.85rem + 0.2vw, 0.95rem);
  --fs-md: clamp(1rem, 0.96rem + 0.25vw, 1.08rem);
  --fs-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.35rem);
  --fs-xl: clamp(1.4rem, 1.2rem + 1vw, 1.8rem);
  --fs-2xl: clamp(1.8rem, 1.4rem + 1.8vw, 2.6rem);
  --fs-hero: clamp(2.3rem, 1.6rem + 3.4vw, 4rem);
}

/* ---------- 2 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "Outfit", "Noto Sans SC", -apple-system, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--ink-2);
  background: var(--bg);
  line-height: 1.7;
  font-size: var(--fs-md);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 { color: var(--ink); line-height: 1.25; font-weight: 700; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
::selection { background: rgba(124, 92, 255, 0.25); color: var(--ink); }

/* ---------- 3 布局工具 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(56px, 5vw + 32px, 104px) 0; position: relative; }
.section-alt { background: var(--grad-soft); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-side { grid-template-columns: 1.2fr 0.8fr; align-items: start; }

.center { text-align: center; }
.muted { color: var(--ink-3); font-size: var(--fs-sm); }

.section-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.section-head p { margin-top: 12px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(124, 92, 255, 0.1); color: var(--brand-deep);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.08em;
  padding: 6px 16px; border-radius: var(--r-pill); margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--grad-brand); }

.grad-text {
  background: var(--grad-brand); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}

/* ---------- 4 文字标题组件 ---------- */
.h-xl { font-size: var(--fs-hero); letter-spacing: -0.02em; }
.h-2xl { font-size: var(--fs-2xl); letter-spacing: -0.015em; }
.h-xl, .h-2xl { margin-bottom: 18px; }
.lead { font-size: var(--fs-lg); color: var(--ink-2); }

/* ---------- 5 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-weight: 700; font-size: var(--fs-md); padding: 14px 30px;
  border-radius: var(--r-pill); transition: transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s;
  white-space: nowrap;
}
.btn svg { width: 19px; height: 19px; flex: none; }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: var(--sh-glow); }
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 14px 40px rgba(124, 92, 255, 0.45); }
.btn-ghost { background: #fff; color: var(--ink); border: 2px solid var(--line); box-shadow: var(--sh-1); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-deep); transform: translateY(-3px); }
.btn-white { background: #fff; color: var(--brand-deep); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18); }
.btn-white:hover { transform: translateY(-3px) scale(1.02); }
.btn-sm { padding: 9px 20px; font-size: var(--fs-sm); }
.btn-lg { padding: 17px 38px; font-size: var(--fs-lg); }
.btn-group { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 6 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 251, 247, 0.85);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color 0.3s, box-shadow 0.3s;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: var(--sh-1); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; font-size: 1.18rem; color: var(--ink); }
.logo-mark {
  width: 40px; height: 40px; border-radius: 13px; background: var(--grad-brand);
  display: grid; place-items: center; color: #fff; box-shadow: var(--sh-glow);
  font-size: 1.05rem; flex: none;
}
.logo b { color: var(--brand-deep); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 16px; border-radius: var(--r-pill); font-weight: 600;
  font-size: var(--fs-sm); color: var(--ink-2); transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--brand-deep); background: rgba(124, 92, 255, 0.08); }
.nav-links a.is-active { color: var(--brand-deep); background: rgba(124, 92, 255, 0.12); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border-radius: 13px;
  border: 2px solid var(--line); background: #fff; position: relative; z-index: 70;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 50%; width: 20px; height: 2.4px;
  border-radius: 2px; background: var(--ink); transform: translateX(-50%);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.nav-toggle span { top: 50%; margin-top: -1.2px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateX(-50%) translateY(7px) rotate(45deg); }
.nav-toggle.is-open span::after { transform: translateX(-50%) translateY(-7px) rotate(-45deg); }
.nav-scrim {
  position: fixed; inset: 0; z-index: 55; background: rgba(42, 33, 64, 0.4);
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.nav-scrim.is-visible { opacity: 1; pointer-events: auto; }

/* ---------- 7 卡片 ---------- */
.card {
  background: var(--card); border-radius: var(--r-lg); padding: 30px;
  border: 1px solid var(--line); box-shadow: var(--sh-1);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--sh-3); }
.card h3 { font-size: var(--fs-lg); margin-bottom: 10px; }
.card p { font-size: var(--fs-sm); }
.card-icon {
  width: 54px; height: 54px; border-radius: 17px; display: grid; place-items: center;
  margin-bottom: 18px; color: #fff; font-size: 1.4rem;
}
.ci-v { background: var(--grad-brand); }
.ci-p { background: var(--grad-sunset); }
.ci-t { background: linear-gradient(135deg, #2dd4bf, #4cc9f0); }
.ci-o { background: linear-gradient(135deg, #ffb03c, #ff8a5c); }

/* ---------- 8 Hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(48px, 4vw + 24px, 88px) 0 clamp(56px, 5vw, 96px); }
.hero-bg { position: absolute; inset: 0; z-index: -1; background: var(--grad-soft); }
.blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; }
.blob-1 { width: 420px; height: 420px; background: #d9ccff; top: -120px; right: -80px; }
.blob-2 { width: 340px; height: 340px; background: #ffd6e6; bottom: -100px; left: -100px; }
.blob-3 { width: 220px; height: 220px; background: #cdefe8; top: 40%; left: 38%; opacity: 0.4; }
.hero-inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(32px, 4vw, 72px); align-items: center; }
.hero h1 em { font-style: normal; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 30px; margin-top: 34px; }
.hero-stat b { display: block; font-size: var(--fs-xl); color: var(--ink); }
.hero-stat span { font-size: var(--fs-xs); color: var(--ink-3); }
.hero-trust { display: flex; align-items: center; gap: 12px; margin-top: 30px; }
.hero-trust img { width: 38px; height: 38px; border-radius: 50%; border: 2.5px solid #fff; box-shadow: var(--sh-1); }
.hero-trust img + img { margin-left: -14px; }

/* CSS 手机模型（独特设计元素） */
.phone-wrap { position: relative; display: flex; justify-content: center; }
.phone {
  width: min(300px, 78vw); aspect-ratio: 9 / 18.5; border-radius: 42px;
  background: #1c1430; padding: 12px; box-shadow: var(--sh-4), 0 0 0 2px rgba(255,255,255,0.6) inset;
  position: relative; transform: rotate(3deg);
}
.phone::before {
  content: ""; position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 24px; background: #1c1430; border-radius: 0 0 16px 16px; z-index: 5;
}
.phone-screen { position: relative; width: 100%; height: 100%; border-radius: 32px; overflow: hidden; }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }
.phone-play {
  position: absolute; inset: 0; margin: auto; width: 62px; height: 62px;
  border-radius: 50%; background: rgba(255, 255, 255, 0.92); z-index: 3;
  display: grid; place-items: center; color: var(--brand-deep); font-size: 1.4rem;
  box-shadow: var(--sh-3); animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: var(--sh-3), 0 0 0 0 rgba(255, 255, 255, 0.5); }
  50% { box-shadow: var(--sh-3), 0 0 0 14px rgba(255, 255, 255, 0); }
}
.phone-live {
  position: absolute; top: 46px; left: 16px; z-index: 4;
  background: #ff4d6d; color: #fff; font-size: 0.72rem; font-weight: 800;
  padding: 4px 11px; border-radius: var(--r-pill); display: inline-flex; align-items: center; gap: 6px;
}
.phone-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #fff; animation: blink 1.2s infinite; }
@keyframes blink { 50% { opacity: 0.3; } }
.float-chip {
  position: absolute; z-index: 6; background: #fff; border-radius: 16px;
  box-shadow: var(--sh-3); padding: 11px 16px; font-size: var(--fs-xs); font-weight: 700; color: var(--ink);
  display: flex; align-items: center; gap: 9px;
  animation: floaty 5s ease-in-out infinite;
}
.float-chip small { display: block; font-weight: 600; color: var(--ink-3); font-size: 0.68rem; }
.chip-4k { top: 12%; right: -4%; }
.chip-hot { bottom: 22%; left: -8%; animation-delay: -2.5s; }
.chip-chat { bottom: 4%; right: 2%; animation-delay: -1.2s; }
.chip-ico { width: 30px; height: 30px; border-radius: 10px; display: grid; place-items: center; font-size: 0.9rem; color: #fff; flex: none; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-11px); } }

/* ---------- 9 跑马灯 ---------- */
.ticker { background: #241a3e; color: #fff; overflow: hidden; padding: 13px 0; }
.ticker-inner { display: flex; gap: 48px; width: max-content; animation: ticker 36s linear infinite; }
.ticker:hover .ticker-inner { animation-play-state: paused; }
@keyframes ticker { to { transform: translateX(-50%); } }
.ticker-item { display: inline-flex; align-items: center; gap: 9px; font-size: var(--fs-sm); white-space: nowrap; }
.ticker-rank { font-weight: 800; font-style: normal; }
.tr-1 { color: #ff6b9d; } .tr-2 { color: #ffb03c; } .tr-3 { color: #2dd4bf; }
.ticker-badge { background: rgba(255, 107, 157, 0.2); color: #ff9ec2; font-size: 0.68rem; padding: 2px 9px; border-radius: var(--r-pill); font-weight: 700; }

/* ---------- 10 视频卡 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 38px; }
.filter-btn {
  padding: 9px 22px; border-radius: var(--r-pill); font-weight: 700; font-size: var(--fs-sm);
  background: #fff; color: var(--ink-2); border: 2px solid var(--line); transition: all 0.25s var(--ease);
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand-deep); }
.filter-btn.is-active { background: var(--grad-brand); color: #fff; border-color: transparent; box-shadow: var(--sh-glow); }

.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.video-card {
  background: #fff; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line);
  box-shadow: var(--sh-1); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex; flex-direction: column;
}
.video-card:hover { transform: translateY(-7px); box-shadow: var(--sh-3); }
.video-card.is-hidden { display: none; }
.thumb { position: relative; aspect-ratio: 3 / 2; overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.video-card:hover .thumb img { transform: scale(1.06); }
.thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(28, 20, 48, 0.55)); }
.thumb-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2; background: rgba(255, 255, 255, 0.94);
  color: var(--brand-deep); font-size: 0.72rem; font-weight: 800; padding: 4px 12px;
  border-radius: var(--r-pill);
}
.thumb-tag.is-live { background: #ff4d6d; color: #fff; }
.thumb-4k { position: absolute; top: 12px; right: 12px; z-index: 2; background: rgba(36, 26, 62, 0.8); color: #ffd166; font-size: 0.68rem; font-weight: 800; padding: 4px 10px; border-radius: 8px; letter-spacing: 0.05em; }
.thumb-duration { position: absolute; bottom: 12px; right: 12px; z-index: 2; background: rgba(28, 20, 48, 0.85); color: #fff; font-size: 0.72rem; font-weight: 700; padding: 3px 9px; border-radius: 7px; }
.thumb-play {
  position: absolute; inset: 0; margin: auto; width: 52px; height: 52px; z-index: 3;
  border-radius: 50%; background: rgba(255, 255, 255, 0.9); color: var(--brand-deep);
  display: grid; place-items: center; font-size: 1.15rem; opacity: 0;
  transform: scale(0.6); transition: all 0.3s var(--ease);
}
.video-card:hover .thumb-play { opacity: 1; transform: scale(1); }
.video-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.video-body h3 { font-size: 1.02rem; line-height: 1.45; }
.video-meta { display: flex; align-items: center; gap: 8px; font-size: var(--fs-xs); color: var(--ink-3); margin-top: auto; flex-wrap: wrap; }
.video-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-3); flex: none; }
.video-meta .views { margin-left: auto; color: var(--brand-deep); font-weight: 700; }

/* ---------- 11 榜单 ---------- */
.rank-list { display: flex; flex-direction: column; }
.rank-item {
  display: flex; align-items: center; gap: 16px; padding: 15px 14px;
  border-radius: var(--r-md); transition: background 0.2s;
}
.rank-item:hover { background: rgba(124, 92, 255, 0.07); }
.rank-item + .rank-item { border-top: 1px dashed var(--line); }
.rank-num {
  width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center;
  font-weight: 800; font-size: 0.95rem; background: rgba(124, 92, 255, 0.1); color: var(--brand-deep); flex: none;
}
.rank-item:nth-child(1) .rank-num { background: var(--grad-sunset); color: #fff; }
.rank-item:nth-child(2) .rank-num { background: rgba(255, 176, 60, 0.2); color: #d97706; }
.rank-item:nth-child(3) .rank-num { background: rgba(45, 212, 191, 0.18); color: #0d9488; }
.rank-info { flex: 1; min-width: 0; }
.rank-info h4 { font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-info span { font-size: var(--fs-xs); color: var(--ink-3); }
.rank-trend { font-size: var(--fs-xs); font-weight: 800; flex: none; }
.trend-up { color: #e11d48; } .trend-flat { color: var(--ink-3); } .trend-down { color: #0d9488; }
.rank-thumb { width: 58px; height: 44px; border-radius: 10px; object-fit: cover; flex: none; }

/* ---------- 12 话题/文章列表 ---------- */
.topic-list { display: flex; flex-direction: column; gap: 18px; }
.topic-item {
  display: flex; gap: 20px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 18px; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.topic-item:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.topic-item .thumb { flex: none; width: 210px; aspect-ratio: 3 / 2; border-radius: var(--r-md); }
.topic-body h3 { font-size: var(--fs-lg); margin-bottom: 8px; }
.topic-body p { font-size: var(--fs-sm); margin-bottom: 12px; }
.topic-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.topic-tag { font-size: 0.72rem; font-weight: 700; color: var(--brand-deep); background: rgba(124, 92, 255, 0.09); padding: 3px 12px; border-radius: var(--r-pill); }

.article-body { max-width: 760px; }
.article-body h2 { font-size: var(--fs-xl); margin: 38px 0 14px; }
.article-body h3 { font-size: var(--fs-lg); margin: 28px 0 10px; }
.article-body p { margin-bottom: 14px; }
.article-body ul { margin: 0 0 16px 2px; }
.article-body ul li { padding-left: 24px; position: relative; margin-bottom: 8px; }
.article-body ul li::before { content: "✦"; position: absolute; left: 0; color: var(--brand); font-size: 0.8em; top: 3px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin: 18px 0 8px; font-size: var(--fs-sm); color: var(--ink-3); }
.article-cover { border-radius: var(--r-xl); overflow: hidden; margin: 26px 0; box-shadow: var(--sh-2); }
.pull-quote {
  border-left: 4px solid; border-image: var(--grad-brand) 1;
  background: rgba(124, 92, 255, 0.06); border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 18px 24px; margin: 26px 0; font-size: var(--fs-lg); color: var(--ink); font-weight: 600;
}

/* ---------- 13 数据/特性 ---------- */
.stats-band { background: #241a3e; border-radius: var(--r-xl); color: #fff; padding: clamp(36px, 4vw, 60px); position: relative; overflow: hidden; }
.stats-band::before { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(124, 92, 255, 0.35); filter: blur(80px); top: -120px; right: -60px; }
.stats-band::after { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; background: rgba(255, 107, 157, 0.28); filter: blur(80px); bottom: -120px; left: -40px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; z-index: 1; }
.stat b { display: block; font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.5rem); color: #fff; }
.stat b em { font-style: normal; background: linear-gradient(135deg, #b8a4ff, #ff9ec2); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.72); }

.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

/* ---------- 14 评价 ---------- */
.review-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--sh-1); }
.review-stars { color: #ffb03c; letter-spacing: 3px; margin-bottom: 14px; }
.review-card p { font-size: var(--fs-sm); margin-bottom: 20px; }
.review-user { display: flex; align-items: center; gap: 12px; }
.review-user img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }
.review-user b { display: block; color: var(--ink); font-size: var(--fs-sm); }
.review-user span { font-size: var(--fs-xs); color: var(--ink-3); }

/* ---------- 15 CTA/下载 ---------- */
.cta-band { background: var(--grad-aurora); border-radius: var(--r-xl); padding: clamp(40px, 5vw, 72px); text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-band h2, .cta-band h3 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, 0.88); }
.store-btn {
  display: inline-flex; align-items: center; gap: 13px; background: rgba(20, 12, 40, 0.88);
  color: #fff; border-radius: 16px; padding: 12px 24px; min-width: 200px;
  transition: transform 0.25s var(--ease), background 0.25s;
}
.store-btn:hover { transform: translateY(-4px); background: rgba(20, 12, 40, 1); }
.store-btn .sb-ico { font-size: 1.7rem; }
.store-btn small { display: block; font-size: 0.7rem; opacity: 0.75; text-align: left; }
.store-btn b { display: block; font-size: 1.02rem; text-align: left; }
.subscribe-box {
  max-width: 520px; margin: 30px auto 0; display: flex; gap: 10px;
  background: #fff; padding: 8px; border-radius: var(--r-pill); box-shadow: var(--sh-2);
}
.subscribe-box input { flex: 1; border: none; outline: none; padding: 10px 20px; border-radius: var(--r-pill); font-size: var(--fs-sm); background: transparent; color: var(--ink); min-width: 0; }
.subscribe-form-msg { margin-top: 12px; font-size: var(--fs-sm); color: #d9f99d; min-height: 1.4em; }
.section .subscribe-form-msg:not(.on-dark) { color: #16a34a; }

/* ---------- 16 FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); margin-bottom: 14px; overflow: hidden; transition: box-shadow 0.3s; }
.faq-item.is-open { box-shadow: var(--sh-2); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  text-align: left; padding: 19px 24px; font-weight: 700; color: var(--ink); font-size: var(--fs-md);
}
.faq-q::after { content: "+"; font-size: 1.3rem; color: var(--brand); transition: transform 0.3s var(--ease); flex: none; }
.faq-item.is-open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s var(--ease); }
.faq-a-inner { padding: 0 24px 20px; font-size: var(--fs-sm); }

/* ---------- 17 提示条/弹层 ---------- */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translate(-50%, 20px);
  background: #241a3e; color: #fff; padding: 12px 26px; border-radius: var(--r-pill);
  font-size: var(--fs-sm); font-weight: 600; opacity: 0; pointer-events: none;
  transition: all 0.3s var(--ease); z-index: 90; box-shadow: var(--sh-3);
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.video-modal {
  position: fixed; inset: 0; z-index: 80; display: grid; place-items: center;
  background: rgba(24, 16, 44, 0.72); backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s; padding: 24px;
}
.video-modal.is-open { opacity: 1; pointer-events: auto; }
.video-modal-box { position: relative; width: min(860px, 100%); background: #fff; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-4); transform: scale(0.94); transition: transform 0.3s var(--ease); }
.video-modal.is-open .video-modal-box { transform: scale(1); }
.video-modal-stage { aspect-ratio: 16 / 9; background: #1c1430; display: grid; place-items: center; color: rgba(255, 255, 255, 0.85); font-size: 3rem; }
.video-modal-meta { padding: 20px 26px 24px; }
.video-modal-meta h3 { font-size: var(--fs-lg); margin-bottom: 6px; }
.video-modal-close {
  position: absolute; top: 12px; right: 12px; width: 42px; height: 42px;
  border-radius: 50%; background: rgba(255, 255, 255, 0.92); color: var(--ink);
  font-size: 1.15rem; z-index: 5; box-shadow: var(--sh-2); display: grid; place-items: center;
}

.back-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 50; width: 48px; height: 48px;
  border-radius: 50%; background: var(--grad-brand); color: #fff; font-size: 1.15rem;
  box-shadow: var(--sh-glow); opacity: 0; pointer-events: none;
  transform: translateY(12px); transition: all 0.3s var(--ease);
}
.back-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

.notice {
  display: flex; gap: 12px; background: rgba(255, 176, 60, 0.12); border: 1px solid rgba(255, 176, 60, 0.35);
  border-radius: var(--r-md); padding: 15px 20px; font-size: var(--fs-sm); color: #92400e;
}

/* ---------- 18 页脚 ---------- */
.site-footer { background: #241a3e; color: rgba(255, 255, 255, 0.78); margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding: clamp(44px, 5vw, 72px) 0 40px; }
.site-footer h4 { color: #fff; font-size: var(--fs-md); margin-bottom: 16px; }
.site-footer a { font-size: var(--fs-sm); display: inline-block; padding: 4px 0; transition: color 0.2s; }
.site-footer a:hover { color: #fff; }
.site-footer .logo { color: #fff; }
.site-footer .logo b { color: #b8a4ff; }
.footer-desc { font-size: var(--fs-sm); margin: 14px 0 18px; }
.footer-tag { display: inline-block; font-size: 0.74rem; background: rgba(255, 255, 255, 0.09); padding: 4px 13px; border-radius: var(--r-pill); margin: 0 6px 8px 0; transition: background 0.2s; }
.footer-tag:hover { background: rgba(124, 92, 255, 0.4); color: #fff; }
.footer-disclaimer { border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 22px 0 28px; font-size: 0.74rem; color: rgba(255, 255, 255, 0.5); line-height: 1.8; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 18px 0; font-size: var(--fs-xs); }

/* ---------- 19 内页页头 ---------- */
.page-hero { position: relative; overflow: hidden; background: var(--grad-soft); padding: clamp(44px, 4vw + 20px, 80px) 0; text-align: center; }
.breadcrumb { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; font-size: var(--fs-xs); color: var(--ink-3); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--brand-deep); }
.breadcrumb .sep { opacity: 0.5; }

/* ---------- 20 分页 ---------- */
.pagination { display: flex; justify-content: center; gap: 9px; margin-top: 44px; flex-wrap: wrap; }
.page-btn {
  min-width: 42px; height: 42px; padding: 0 14px; border-radius: 13px; display: inline-grid; place-items: center;
  background: #fff; border: 2px solid var(--line); font-weight: 700; font-size: var(--fs-sm); color: var(--ink-2);
  transition: all 0.2s;
}
.page-btn:hover { border-color: var(--brand); color: var(--brand-deep); }
.page-btn.is-active { background: var(--grad-brand); color: #fff; border-color: transparent; box-shadow: var(--sh-glow); }

/* ---------- 21 滚动动效 ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.12s; }
[data-reveal][data-delay="2"] { transition-delay: 0.24s; }
[data-reveal][data-delay="3"] { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 22 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner { gap: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 65;
    width: min(320px, 84vw); background: #fff; flex-direction: column;
    align-items: stretch; gap: 6px; padding: 92px 22px 32px;
    box-shadow: var(--sh-4); transform: translateX(105%);
    transition: transform 0.35s var(--ease);
  }
  .nav-links.is-open { transform: translateX(0); }
  .nav-links a { padding: 13px 18px; font-size: 1.02rem; border-radius: var(--r-md); }
  .nav-cta .btn { display: none; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-cta, .hero-stats, .hero-trust { justify-content: center; }
  .phone-wrap { margin-top: 16px; }
  .chip-hot { left: 0; }
  .grid-side { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  :root { --gutter: 18px; }
  .grid-2, .grid-3, .grid-4, .feature-row { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .btn-group .btn { flex: 1 1 100%; }
  .topic-item { flex-direction: column; }
  .topic-item .thumb { width: 100%; }
  .stats-grid { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .subscribe-box { flex-direction: column; border-radius: var(--r-lg); padding: 10px; }
  .subscribe-box .btn { width: 100%; }
  .float-chip { transform: scale(0.88); transform-origin: center; }
  .chip-4k { right: -2%; }
  .store-btn { min-width: 0; width: 100%; justify-content: center; }
  .hero-stats { gap: 20px; }
  .rank-thumb { display: none; }
}

@media (max-width: 420px) {
  .float-chip { display: none; }
  .phone { transform: none; }
  .rank-num { width: 28px; height: 28px; font-size: 0.85rem; }
}

/* ---------- 23 附加组件（内页专用） ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.step-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 34px 28px 28px; box-shadow: var(--sh-1); }
.step-num {
  counter-increment: step; position: absolute; top: -18px; left: 26px;
  width: 40px; height: 40px; border-radius: 14px; background: var(--grad-brand); color: #fff;
  display: grid; place-items: center; font-weight: 800; box-shadow: var(--sh-glow);
}
.step-num::before { content: counter(step); }
.qr-slot {
  width: 128px; height: 128px; border-radius: var(--r-md); background:
    repeating-linear-gradient(0deg, #241a3e 0 8px, transparent 8px 16px),
    repeating-linear-gradient(90deg, #241a3e 0 8px, #fff 8px 16px);
  border: 6px solid #fff; box-shadow: var(--sh-2); margin: 0 auto;
}
.dl-card { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(28px, 4vw, 64px); align-items: center; }
.matrix-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-1); font-size: var(--fs-sm); }
.matrix-table th, .matrix-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.matrix-table th { background: rgba(124, 92, 255, 0.08); color: var(--ink); font-size: var(--fs-xs); letter-spacing: 0.05em; }
.matrix-table tr:last-child td { border-bottom: none; }
.matrix-table .yes { color: #16a34a; font-weight: 800; }
.matrix-table .no { color: #d1d5db; font-weight: 800; }
.matrix-wrap { overflow-x: auto; border-radius: var(--r-lg); }
.comment-item { display: flex; gap: 15px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.comment-item img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex: none; }
.comment-item b { color: var(--ink); font-size: var(--fs-sm); }
.comment-item time { font-size: var(--fs-xs); color: var(--ink-3); }
.comment-item p { font-size: var(--fs-sm); margin-top: 5px; }
.comment-form { display: grid; gap: 12px; }
.comment-form input, .comment-form textarea {
  width: 100%; border: 2px solid var(--line); border-radius: var(--r-md);
  padding: 13px 18px; outline: none; font-size: var(--fs-sm); background: #fff; color: var(--ink);
  transition: border-color 0.2s; resize: vertical;
}
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--brand); }
.sidebar-sticky { position: sticky; top: 92px; display: grid; gap: 22px; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; box-shadow: var(--sh-1); }
.side-card h3 { font-size: var(--fs-md); margin-bottom: 14px; }
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr; gap: 30px; }
  .dl-card { grid-template-columns: 1fr; text-align: center; }
  .sidebar-sticky { position: static; }
}
@media (max-width: 680px) {
  .matrix-table th, .matrix-table td { padding: 11px 12px; }
}