/* ==========================================================
   幻梦直播官网 全站样式
   huanmengzhibo.com
   ========================================================== */
:root {
  --primary: #8b5cf6;
  --primary-light: #a78bfa;
  --primary-dark: #6d28d9;
  --accent: #ec4899;
  --accent-2: #06b6d4;
  --bg: #0d0a1a;
  --bg-2: #151028;
  --bg-card: #1c1535;
  --text: #f1eefe;
  --text-muted: #a79fc4;
  --border: rgba(167, 139, 250, .18);
  --grad: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --grad-soft: linear-gradient(135deg, rgba(139,92,246,.15), rgba(236,72,153,.12));
  --radius: 16px;
  --shadow: 0 10px 40px rgba(109, 40, 217, .25);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(13, 10, 26, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background .3s;
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--grad);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; box-shadow: var(--shadow);
}
.logo b { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--text-muted); font-size: 15px; transition: color .2s; position: relative; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px;
  background: var(--grad); border-radius: 2px;
}
.nav-cta {
  padding: 9px 22px; border-radius: 999px; background: var(--grad);
  color: #fff !important; font-weight: 600; box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 44px rgba(236, 72, 153, .35); }
.nav-cta::after { display: none !important; }

/* 移动端菜单按钮 */
.menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; position: relative;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px; background: var(--text);
  margin: 5px auto; border-radius: 2px; transition: .3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: 160px 0 110px;
  background:
    radial-gradient(800px 400px at 15% 10%, rgba(139, 92, 246, .22), transparent 60%),
    radial-gradient(700px 380px at 85% 25%, rgba(236, 72, 153, .16), transparent 60%),
    radial-gradient(600px 300px at 50% 90%, rgba(6, 182, 212, .10), transparent 60%);
  text-align: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px; font-size: 13px;
  background: var(--grad-soft); border: 1px solid var(--border);
  color: var(--primary-light); margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(34px, 5.5vw, 58px); line-height: 1.25; font-weight: 800;
  margin-bottom: 22px; letter-spacing: 1px;
}
.hero h1 .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p.sub {
  max-width: 640px; margin: 0 auto 40px; color: var(--text-muted);
  font-size: clamp(15px, 2vw, 18px);
}
.hero-actions { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 34px; border-radius: 999px; font-size: 16px; font-weight: 600;
  transition: transform .2s, box-shadow .2s; cursor: pointer; border: none;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 50px rgba(236, 72, 153, .4); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid rgba(167, 139, 250, .4);
}
.btn-ghost:hover { background: rgba(139, 92, 246, .12); transform: translateY(-3px); }

/* 数据统计 */
.hero-stats {
  display: flex; justify-content: center; gap: clamp(30px, 6vw, 80px);
  margin-top: 70px; flex-wrap: wrap;
}
.stat b { font-size: clamp(26px, 3.4vw, 38px); background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat span { display: block; color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* ---------- 通用 Section ---------- */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-2); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .kicker {
  display: inline-block; font-size: 13px; letter-spacing: 3px; color: var(--primary-light);
  margin-bottom: 14px; text-transform: uppercase;
}
.section-head h2 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; margin-bottom: 16px; }
.section-head p { color: var(--text-muted); font-size: 16px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 28px;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover {
  transform: translateY(-6px); border-color: rgba(167, 139, 250, .45);
  box-shadow: var(--shadow);
}
.card .icon {
  width: 54px; height: 54px; border-radius: 14px; font-size: 26px;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 20px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; font-weight: 700; }
.card p { color: var(--text-muted); font-size: 14.5px; }

/* ---------- 图文交替 ---------- */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; padding: 60px 0;
}
.feature-row .text .kicker { color: var(--accent); font-size: 13px; letter-spacing: 2px; }
.feature-row .text h3 { font-size: clamp(22px, 3vw, 30px); margin: 12px 0 16px; font-weight: 800; }
.feature-row .text p { color: var(--text-muted); margin-bottom: 18px; }
.feature-row .text li {
  color: var(--text-muted); padding-left: 28px; position: relative; margin-bottom: 10px; font-size: 15px;
}
.feature-row .text li::before {
  content: "✦"; position: absolute; left: 0; color: var(--primary-light);
}
.feature-visual {
  border-radius: 22px; aspect-ratio: 4/3; overflow: hidden; position: relative;
  background: var(--grad-soft); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}
.feature-visual .big-emoji { font-size: 90px; filter: drop-shadow(0 10px 30px rgba(139,92,246,.5)); }
.feature-visual::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 30% 20%, rgba(139,92,246,.25), transparent 65%);
}
.feature-row.reverse .feature-visual { order: -1; }

/* ---------- 手机模型 ---------- */
.phone-mock {
  width: 250px; height: 520px; margin: 0 auto;
  border-radius: 40px; border: 3px solid rgba(167,139,250,.35);
  background: linear-gradient(160deg, #241a4a, #131027);
  position: relative; box-shadow: 0 30px 80px rgba(109,40,217,.35);
  overflow: hidden;
}
.phone-mock::before {
  content: ""; position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  width: 90px; height: 22px; background: #0d0a1a; border-radius: 12px;
}
.phone-screen {
  position: absolute; inset: 44px 14px 20px;
  border-radius: 22px; background: var(--grad-soft);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
}
.phone-screen .live-dot {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px;
  color: #fff; background: rgba(236,72,153,.85); padding: 4px 12px; border-radius: 999px;
}
.phone-screen .live-dot::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: #fff;
  animation: pulse 1.4s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
.phone-screen .emoji { font-size: 64px; }
.phone-screen p { font-size: 13px; color: var(--text-muted); }

/* ---------- 下载区 ---------- */
.download-box {
  background: var(--grad-soft); border: 1px solid var(--border);
  border-radius: 24px; padding: clamp(36px, 6vw, 64px);
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center;
}
.download-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 26px; }
.dl-btn {
  display: flex; align-items: center; gap: 12px;
  background: #fff; color: #16112e; border-radius: 14px; padding: 12px 24px;
  font-weight: 700; transition: transform .2s, box-shadow .2s;
}
.dl-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 34px rgba(255,255,255,.15); }
.dl-btn .os-icon { font-size: 26px; }
.dl-btn small { display: block; font-weight: 400; font-size: 11px; color: #6b6486; }
.dl-btn.dark { background: rgba(255,255,255,.08); color: #fff; border: 1px solid var(--border); }
.dl-btn.dark small { color: var(--text-muted); }

.qr-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 18px;
  padding: 26px; text-align: center; max-width: 240px; margin: 0 auto;
}
.qr-placeholder {
  width: 160px; height: 160px; margin: 0 auto 14px; border-radius: 12px;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.9) 0 6px, transparent 6px 12px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.9) 0 6px, transparent 6px 12px);
  background-color: #1a1433; opacity: .85; position: relative;
}
.qr-placeholder::after {
  content: "✨"; position: absolute; inset: 0; display: flex;
  align-items: center; justify-content: center; font-size: 40px;
  background: #1a1433; width: 48px; height: 48px; margin: auto; border-radius: 10px;
}
.qr-card p { font-size: 13px; color: var(--text-muted); }

/* ---------- 步骤 ---------- */
.steps { counter-reset: step; }
.step-item { position: relative; padding-left: 70px; margin-bottom: 34px; }
.step-item::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 48px; height: 48px; border-radius: 14px; font-size: 20px; font-weight: 800;
  background: var(--grad); color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow);
}
.step-item h3 { font-size: 18px; margin-bottom: 6px; }
.step-item p { color: var(--text-muted); font-size: 14.5px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; margin-bottom: 14px; overflow: hidden;
}
.faq-item summary {
  cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 16px;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; color: var(--primary-light); transition: transform .3s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { color: var(--primary-light); }
.faq-item .answer { padding: 0 24px 20px; color: var(--text-muted); font-size: 14.5px; }

/* ---------- 时间线 ---------- */
.timeline { position: relative; max-width: 720px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.tl-item { position: relative; margin-bottom: 36px; }
.tl-item::before {
  content: ""; position: absolute; left: -32px; top: 8px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 0 5px rgba(139,92,246,.18);
}
.tl-item time { font-size: 13px; color: var(--accent); font-weight: 700; letter-spacing: 1px; }
.tl-item h3 { font-size: 18px; margin: 6px 0; }
.tl-item p { color: var(--text-muted); font-size: 14.5px; }

/* ---------- 数据条 ---------- */
.value-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; text-align: center;
}
.value-strip .card { padding: 28px 16px; }

/* ---------- CTA 区块 ---------- */
.cta-band {
  text-align: center; border-radius: 26px; padding: clamp(44px, 7vw, 80px) 24px;
  background:
    radial-gradient(500px 240px at 20% 0%, rgba(139,92,246,.35), transparent 60%),
    radial-gradient(500px 240px at 80% 100%, rgba(236,72,153,.3), transparent 60%),
    var(--bg-card);
  border: 1px solid var(--border);
}
.cta-band h2 { font-size: clamp(24px, 3.6vw, 36px); margin-bottom: 14px; font-weight: 800; }
.cta-band p { color: var(--text-muted); margin-bottom: 30px; }

/* ---------- 法律文档页 ---------- */
.doc-body { max-width: 820px; margin: 0 auto; }
.doc-body h2 { font-size: 21px; margin: 40px 0 14px; color: var(--primary-light); }
.doc-body h3 { font-size: 17px; margin: 26px 0 10px; }
.doc-body p, .doc-body li { color: var(--text-muted); font-size: 15px; margin-bottom: 10px; }
.doc-body ul { list-style: disc; padding-left: 24px; }
.doc-body .updated { font-size: 13px; color: var(--text-muted); border-left: 3px solid var(--primary); padding-left: 12px; margin-bottom: 30px; }

/* 面包屑 */
.breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 30px; }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb span { margin: 0 8px; opacity: .5; }

/* 内页 Hero */
.page-hero {
  padding: 140px 0 60px; text-align: center;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(139,92,246,.2), transparent 65%);
}
.page-hero h1 { font-size: clamp(28px, 4.4vw, 44px); font-weight: 800; margin-bottom: 14px; }
.page-hero p { color: var(--text-muted); max-width: 620px; margin: 0 auto; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0a0816; border-top: 1px solid var(--border);
  padding: 64px 0 30px; margin-top: 40px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px;
}
.footer-grid h4 { font-size: 15px; margin-bottom: 18px; color: var(--text); }
.footer-grid a { display: block; color: var(--text-muted); font-size: 14px; margin-bottom: 10px; transition: color .2s; }
.footer-grid a:hover { color: var(--primary-light); }
.footer-brand p { color: var(--text-muted); font-size: 14px; margin-top: 14px; max-width: 300px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px; text-align: center;
  color: var(--text-muted); font-size: 13px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .value-strip { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 34px; }
  .feature-row.reverse .feature-visual { order: 0; }
  .download-box { grid-template-columns: 1fr; text-align: center; }
  .download-btns { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .menu-toggle { display: block; }
  .nav-links {
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(13, 10, 26, .97); backdrop-filter: blur(14px);
    flex-direction: column; padding: 26px 0; gap: 22px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform .35s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .hero { padding: 130px 0 80px; }
  .footer-grid { grid-template-columns: 1fr; }
}