/* ============================================================
   im冷钱包 | xinxin.com | 全站主样式表
   ©2026 im冷钱包. All Rights Reserved.
   ============================================================ */

/* ---------- CSS Reset & Variables ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:       #0a1628;
  --primary-light: #112240;
  --accent:        #00d4ff;
  --accent2:       #7b2fff;
  --gold:          #f5c518;
  --green:         #00e676;
  --red:           #ff5252;
  --text:          #e8eaf6;
  --text-muted:    #8892b0;
  --card-bg:       #0d1f3c;
  --card-border:   rgba(0,212,255,0.18);
  --radius:        12px;
  --radius-sm:     8px;
  --shadow:        0 4px 32px rgba(0,212,255,0.10);
  --transition:    0.3s ease;
  --font-main:     'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --font-mono:     'JetBrains Mono','Courier New',monospace;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--primary);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--primary); }
::-webkit-scrollbar-thumb { background: var(--accent2); border-radius: 3px; }

/* ---------- Utility ---------- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-gold { color: var(--gold); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-muted { color: var(--text-muted); }
.fw-bold { font-weight: 700; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 600; background: rgba(0,212,255,0.15);
  color: var(--accent); border: 1px solid rgba(0,212,255,0.3);
}
.badge-gold { background: rgba(245,197,24,0.15); color: var(--gold); border-color: rgba(245,197,24,0.3); }
.badge-green { background: rgba(0,230,118,0.15); color: var(--green); border-color: rgba(0,230,118,0.3); }
.badge-red { background: rgba(255,82,82,0.15); color: var(--red); border-color: rgba(255,82,82,0.3); }
.badge-purple { background: rgba(123,47,255,0.15); color: #b47aff; border-color: rgba(123,47,255,0.3); }

/* ---------- Section Title ---------- */
.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(90deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 40px;
}
.section-divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px; margin: 12px 0 32px;
}
.section-divider.center { margin: 12px auto 32px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px; font-size: 15px;
  font-weight: 600; cursor: pointer; border: none;
  transition: all var(--transition); text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,255,0.35); color: #fff; }
.btn-outline {
  background: transparent; color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover { background: rgba(0,212,255,0.1); color: var(--accent); }
.btn-gold {
  background: linear-gradient(135deg, #f5c518, #e6a800);
  color: #0a1628;
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,197,24,0.35); color: #0a1628; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* ---------- Card ---------- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0; transition: opacity var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(0,212,255,0.4); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(123,47,255,0.15));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
  border: 1px solid rgba(0,212,255,0.2);
}
.card-title { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: #fff; }
.card-desc { color: var(--text-muted); font-size: 14px; line-height: 1.8; }

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(10,22,40,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,212,255,0.12);
}
.header-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.logo {
  display: flex; align-items: center; gap: 12px;
  font-size: 22px; font-weight: 800; color: #fff;
  text-decoration: none;
}
.logo-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.logo span { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-contact { font-size: 13px; color: var(--text-muted); }
.header-contact a { color: var(--accent); }

/* Nav */
.main-nav { border-top: 1px solid rgba(0,212,255,0.08); }
.nav-list {
  display: flex; align-items: center; gap: 4px; padding: 0;
}
.nav-item { position: relative; }
.nav-link {
  display: block; padding: 12px 16px; font-size: 14px; font-weight: 500;
  color: var(--text-muted); border-radius: var(--radius-sm);
  transition: all var(--transition); white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent); background: rgba(0,212,255,0.08);
}
.nav-dropdown {
  position: absolute; top: 100%; left: 0; min-width: 200px;
  background: var(--primary-light); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 8px 0;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all var(--transition); z-index: 999;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.nav-item:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown a {
  display: block; padding: 10px 20px; font-size: 13px;
  color: var(--text-muted); transition: all var(--transition);
}
.nav-dropdown a:hover { color: var(--accent); background: rgba(0,212,255,0.06); padding-left: 28px; }

/* Search Bar */
.search-bar {
  background: var(--primary-light);
  border-bottom: 1px solid rgba(0,212,255,0.08);
  padding: 10px 0;
}
.search-inner {
  display: flex; align-items: center; gap: 12px;
  max-width: 640px;
}
.search-input {
  flex: 1; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(0,212,255,0.2); border-radius: 8px;
  padding: 10px 16px; color: var(--text); font-size: 14px;
  outline: none; transition: border-color var(--transition);
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--accent); }
.search-btn {
  padding: 10px 20px; background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none; border-radius: 8px; color: #fff; font-size: 14px;
  font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: all var(--transition);
}
.search-btn:hover { opacity: 0.9; }
.search-status {
  font-size: 12px; color: var(--accent); margin-top: 4px;
  height: 16px; display: none;
}
.search-status.show { display: block; }

/* Breadcrumb */
.breadcrumb {
  padding: 12px 0; font-size: 13px; color: var(--text-muted);
  border-bottom: 1px solid rgba(0,212,255,0.06);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--accent); }
.breadcrumb-sep { margin: 0 8px; color: rgba(255,255,255,0.2); }

/* Mobile Nav Toggle */
.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 4px; color: var(--text);
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); margin: 5px 0;
  transition: all var(--transition); border-radius: 2px;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  padding: 100px 0 80px;
  background: radial-gradient(ellipse at 20% 50%, rgba(0,212,255,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(123,47,255,0.08) 0%, transparent 60%),
              var(--primary);
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-badge { margin-bottom: 20px; }
.hero h1 {
  font-size: clamp(28px, 4vw, 48px); font-weight: 900;
  line-height: 1.2; margin-bottom: 20px; color: #fff;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-desc {
  font-size: 16px; color: var(--text-muted); line-height: 1.9;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 40px; padding-top: 32px;
  border-top: 1px solid rgba(0,212,255,0.12);
}
.hero-stat-num {
  font-size: 28px; font-weight: 800; color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.hero-visual {
  position: relative; display: flex; align-items: center; justify-content: center;
}
.hero-device {
  width: 280px; height: 480px; border-radius: 32px;
  background: linear-gradient(145deg, #1a3a5c, #0d1f3c);
  border: 2px solid rgba(0,212,255,0.3);
  box-shadow: 0 0 60px rgba(0,212,255,0.15), inset 0 0 40px rgba(0,0,0,0.3);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 16px; position: relative; overflow: hidden;
}
.hero-device::before {
  content: ''; position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(0,212,255,0.05) 60deg, transparent 120deg);
  animation: rotate 8s linear infinite;
}
@keyframes rotate { to { transform: rotate(360deg); } }
.device-screen {
  width: 220px; height: 320px; border-radius: 16px;
  background: linear-gradient(135deg, #0a1628, #112240);
  border: 1px solid rgba(0,212,255,0.2);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 12px; padding: 20px; z-index: 1;
}
.device-logo { font-size: 36px; }
.device-brand { font-size: 16px; font-weight: 700; color: var(--accent); }
.device-status {
  font-size: 11px; color: var(--green);
  display: flex; align-items: center; gap: 6px;
}
.device-status::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--green); animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }
.device-keys {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 8px;
  width: 100%;
}
.device-key {
  height: 32px; border-radius: 6px;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--text-muted);
}
.hero-float {
  position: absolute; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: 12px;
  padding: 12px 16px; font-size: 13px; z-index: 2;
  animation: float 4s ease-in-out infinite;
}
.hero-float-1 { top: 10%; right: -20px; animation-delay: 0s; }
.hero-float-2 { bottom: 20%; left: -30px; animation-delay: 2s; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.float-label { font-size: 11px; color: var(--text-muted); }
.float-value { font-weight: 700; color: var(--green); }

/* ============================================================
   TICKER / MARQUEE
   ============================================================ */
.ticker-wrap {
  background: var(--primary-light);
  border-top: 1px solid rgba(0,212,255,0.1);
  border-bottom: 1px solid rgba(0,212,255,0.1);
  padding: 10px 0; overflow: hidden;
}
.ticker-label {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; padding: 4px 14px; border-radius: 4px;
  font-size: 12px; font-weight: 700; white-space: nowrap;
  margin-right: 20px; flex-shrink: 0;
}
.ticker-track {
  display: flex; gap: 40px; white-space: nowrap;
  animation: ticker 40s linear infinite;
}
.ticker-wrap:hover .ticker-track { animation-play-state: paused; }
@keyframes ticker { from{transform:translateX(0)} to{transform:translateX(-50%)} }
.ticker-item {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600;
}
.ticker-price { color: #fff; }
.ticker-change { font-size: 12px; }

/* ============================================================
   SECURITY DYNAMIC SECTION
   ============================================================ */
.security-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex; gap: 16px; padding: 20px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); transition: all var(--transition);
  cursor: pointer;
}
.news-item:hover { border-color: rgba(0,212,255,0.4); transform: translateX(4px); }
.news-img {
  width: 80px; height: 60px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(123,47,255,0.2));
  flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  font-size: 24px; border: 1px solid rgba(0,212,255,0.15);
}
.news-content { flex: 1; }
.news-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 6px; line-height: 1.5; }
.news-meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }
.news-excerpt { font-size: 13px; color: var(--text-muted); margin-top: 6px; line-height: 1.6; }
.sidebar-widget {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 20px;
}
.widget-title {
  font-size: 15px; font-weight: 700; color: #fff;
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 1px solid rgba(0,212,255,0.1);
  display: flex; align-items: center; gap: 8px;
}
.hot-list { display: flex; flex-direction: column; gap: 12px; }
.hot-item { display: flex; align-items: flex-start; gap: 10px; }
.hot-rank {
  width: 22px; height: 22px; border-radius: 4px;
  background: rgba(0,212,255,0.1); display: flex; align-items: center;
  justify-content: center; font-size: 11px; font-weight: 700;
  color: var(--text-muted); flex-shrink: 0;
}
.hot-rank.top { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.hot-text { font-size: 13px; color: var(--text-muted); line-height: 1.5; cursor: pointer; }
.hot-text:hover { color: var(--accent); }

/* ============================================================
   MARKET DATA
   ============================================================ */
.market-table-wrap {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); overflow: hidden;
}
.market-table { width: 100%; border-collapse: collapse; }
.market-table th {
  background: rgba(0,212,255,0.06); padding: 14px 20px;
  font-size: 12px; font-weight: 600; color: var(--text-muted);
  text-align: left; border-bottom: 1px solid rgba(0,212,255,0.1);
  white-space: nowrap;
}
.market-table td {
  padding: 14px 20px; font-size: 14px; border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}
.market-table tr:last-child td { border-bottom: none; }
.market-table tr:hover td { background: rgba(0,212,255,0.03); }
.coin-info { display: flex; align-items: center; gap: 10px; }
.coin-icon {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
}
.coin-name { font-weight: 600; color: #fff; font-size: 14px; }
.coin-sym { font-size: 12px; color: var(--text-muted); }
.price-up { color: var(--green); }
.price-down { color: var(--red); }
.mini-chart {
  width: 80px; height: 30px; display: inline-block;
}

/* ============================================================
   AI SECTION
   ============================================================ */
.ai-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.ai-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 28px; position: relative; overflow: hidden;
  transition: all var(--transition);
}
.ai-card::after {
  content: ''; position: absolute; bottom: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(0,212,255,0.08), transparent);
  border-radius: 50%;
}
.ai-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.ai-icon { font-size: 40px; margin-bottom: 16px; }
.ai-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.ai-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.ai-demo {
  background: rgba(0,0,0,0.3); border-radius: 8px; padding: 12px;
  font-family: var(--font-mono); font-size: 12px; color: var(--green);
  border: 1px solid rgba(0,212,255,0.1);
}
.ai-demo-line { margin: 3px 0; }
.ai-demo-line.comment { color: var(--text-muted); }
.ai-demo-line.highlight { color: var(--accent); }

/* ============================================================
   VIDEO CARDS
   ============================================================ */
.video-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.video-card {
  border-radius: var(--radius); overflow: hidden;
  background: var(--card-bg); border: 1px solid var(--card-border);
  cursor: pointer; transition: all var(--transition); position: relative;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.video-thumb {
  position: relative; padding-top: 56.25%; overflow: hidden;
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(123,47,255,0.1));
}
.video-thumb-inner {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 48px;
}
.video-play {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.5); opacity: 0; transition: opacity var(--transition);
}
.video-card:hover .video-play { opacity: 1; }
.play-btn {
  width: 60px; height: 60px; border-radius: 50%;
  background: rgba(0,212,255,0.9); display: flex; align-items: center;
  justify-content: center; transform: scale(0.8);
  transition: transform var(--transition);
}
.video-card:hover .play-btn { transform: scale(1); }
.play-icon {
  width: 0; height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-left: 20px solid #fff;
  margin-left: 4px;
}
.video-info { padding: 16px; }
.video-title { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 8px; line-height: 1.5; }
.video-meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }
.video-duration {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.7); color: #fff; font-size: 11px;
  padding: 2px 6px; border-radius: 4px;
}

/* ============================================================
   EXPERTS
   ============================================================ */
.experts-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.expert-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 24px; text-align: center;
  transition: all var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(0,212,255,0.4); }
.expert-avatar {
  width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; border: 3px solid rgba(0,212,255,0.3);
}
.expert-name { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-title { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.expert-tag {
  font-size: 11px; padding: 2px 8px; border-radius: 20px;
  background: rgba(0,212,255,0.1); color: var(--accent);
  border: 1px solid rgba(0,212,255,0.2);
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.testimonial-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 28px; position: relative;
  transition: all var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.quote-icon {
  font-size: 48px; color: var(--accent); opacity: 0.3;
  position: absolute; top: 16px; right: 20px; line-height: 1;
}
.testimonial-text { font-size: 14px; color: var(--text-muted); line-height: 1.9; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(123,47,255,0.2));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; border: 2px solid rgba(0,212,255,0.2);
}
.author-name { font-size: 14px; font-weight: 600; color: #fff; }
.author-info { font-size: 12px; color: var(--text-muted); }
.star-rating { color: var(--gold); font-size: 14px; margin-bottom: 12px; }

/* ============================================================
   SHARE SECTION
   ============================================================ */
.share-section {
  background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(123,47,255,0.06));
  border: 1px solid rgba(0,212,255,0.15); border-radius: var(--radius);
  padding: 40px; text-align: center;
}
.share-title { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.share-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 28px; }
.share-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.share-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 8px; font-size: 14px; font-weight: 600;
  cursor: pointer; border: none; transition: all var(--transition); text-decoration: none;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }

/* ============================================================
   FEATURES / SECURITY HIGHLIGHTS
   ============================================================ */
.features-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.feature-item {
  text-align: center; padding: 32px 20px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); transition: all var(--transition);
}
.feature-item:hover { transform: translateY(-4px); border-color: rgba(0,212,255,0.4); }
.feature-icon { font-size: 40px; margin-bottom: 16px; }
.feature-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: linear-gradient(135deg, #0d2a4a, #1a1040);
  border: 1px solid rgba(0,212,255,0.2); border-radius: var(--radius);
  padding: 60px 40px; text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,212,255,0.08), transparent 70%);
}
.cta-title { font-size: clamp(22px, 3vw, 36px); font-weight: 800; color: #fff; margin-bottom: 16px; position: relative; }
.cta-desc { font-size: 16px; color: var(--text-muted); margin-bottom: 32px; position: relative; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

/* ============================================================
   INNER PAGE HERO
   ============================================================ */
.page-hero {
  padding: 60px 0 40px;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,212,255,0.06), transparent 60%),
              var(--primary);
  border-bottom: 1px solid rgba(0,212,255,0.1);
}
.page-hero h1 { font-size: clamp(24px, 3.5vw, 40px); font-weight: 800; color: #fff; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--text-muted); max-width: 640px; }

/* ============================================================
   FORUM / COMMUNITY
   ============================================================ */
.forum-list { display: flex; flex-direction: column; gap: 12px; }
.forum-item {
  display: flex; align-items: flex-start; gap: 16px; padding: 20px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); transition: all var(--transition); cursor: pointer;
}
.forum-item:hover { border-color: rgba(0,212,255,0.4); transform: translateX(4px); }
.forum-avatar {
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(123,47,255,0.2));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; border: 2px solid rgba(0,212,255,0.2);
}
.forum-content { flex: 1; }
.forum-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 6px; }
.forum-excerpt { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.forum-meta { display: flex; gap: 16px; margin-top: 8px; font-size: 12px; color: var(--text-muted); }
.forum-stats { display: flex; flex-direction: column; align-items: center; gap: 4px; flex-shrink: 0; }
.forum-stat-num { font-size: 18px; font-weight: 700; color: var(--accent); }
.forum-stat-label { font-size: 11px; color: var(--text-muted); }

/* ============================================================
   GUIDE / STEPS
   ============================================================ */
.steps-list { display: flex; flex-direction: column; gap: 24px; }
.step-item {
  display: flex; gap: 24px; padding: 28px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); position: relative;
}
.step-num {
  width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; color: #fff;
}
.step-content { flex: 1; }
.step-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; }
.step-tip {
  margin-top: 12px; padding: 12px 16px;
  background: rgba(0,212,255,0.06); border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0; font-size: 13px; color: var(--text-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--primary-light);
  border-top: 1px solid rgba(0,212,255,0.1);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand { }
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 800; color: #fff;
  text-decoration: none; margin-bottom: 16px;
}
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-contact { display: flex; flex-direction: column; gap: 8px; }
.footer-contact-item { font-size: 13px; color: var(--text-muted); display: flex; gap: 8px; }
.footer-contact-item strong { color: var(--text); min-width: 80px; }
.footer-col-title {
  font-size: 15px; font-weight: 700; color: #fff;
  margin-bottom: 20px; padding-bottom: 10px;
  border-bottom: 1px solid rgba(0,212,255,0.1);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(0,212,255,0.08);
  padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 13px; color: var(--text-muted); }
.footer-copy a { color: var(--text-muted); }
.footer-copy a:hover { color: var(--accent); }
.footer-update { font-size: 13px; color: var(--text-muted); }
.footer-update span { color: var(--accent); font-weight: 600; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.footer-tag {
  font-size: 11px; padding: 3px 10px; border-radius: 20px;
  background: rgba(255,255,255,0.04); color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}
.footer-tag:hover { background: rgba(0,212,255,0.08); color: var(--accent); border-color: rgba(0,212,255,0.2); }

/* ============================================================
   ALERT / NOTICE BAR
   ============================================================ */
.notice-bar {
  background: linear-gradient(90deg, rgba(0,212,255,0.1), rgba(123,47,255,0.1));
  border-bottom: 1px solid rgba(0,212,255,0.15);
  padding: 8px 0; font-size: 13px; overflow: hidden;
}
.notice-inner { display: flex; align-items: center; gap: 16px; }
.notice-tag {
  background: var(--accent); color: var(--primary);
  padding: 2px 10px; border-radius: 4px; font-size: 11px;
  font-weight: 700; flex-shrink: 0;
}
.notice-text { color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notice-text a { color: var(--accent); }

/* ============================================================
   SECURITY PAGE SPECIFICS
   ============================================================ */
.security-level {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.level-bar {
  flex: 1; height: 6px; background: rgba(255,255,255,0.1);
  border-radius: 3px; overflow: hidden;
}
.level-fill {
  height: 100%; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--green));
}
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr { border-bottom: 1px solid rgba(0,212,255,0.08); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: 12px 0; font-size: 14px; }
.spec-table td:first-child { color: var(--text-muted); width: 40%; }
.spec-table td:last-child { color: #fff; font-weight: 500; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4, .features-grid, .experts-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .security-grid { grid-template-columns: 1fr; }
  .ai-grid, .video-grid, .testimonials-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .container { padding: 0 16px; }
  .grid-2, .grid-3, .ai-grid, .video-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .features-grid, .experts-grid, .grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .nav-list { display: none; flex-direction: column; padding: 12px 0; }
  .nav-list.open { display: flex; }
  .nav-toggle { display: block; }
  .header-top { flex-wrap: wrap; gap: 12px; }
  .header-contact { display: none; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .share-buttons { gap: 10px; }
  .share-btn { padding: 10px 16px; font-size: 13px; }
  .market-table th:nth-child(4),
  .market-table td:nth-child(4),
  .market-table th:nth-child(5),
  .market-table td:nth-child(5) { display: none; }
}

@media (max-width: 480px) {
  .features-grid, .experts-grid, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}
@keyframes shimmer { from{background-position:200% 0} to{background-position:-200% 0} }

/* Glow effect */
.glow { box-shadow: 0 0 20px rgba(0,212,255,0.3); }
.glow-text { text-shadow: 0 0 20px rgba(0,212,255,0.5); }

/* Tag cloud */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud-item {
  padding: 5px 14px; border-radius: 20px; font-size: 13px;
  background: rgba(0,212,255,0.08); color: var(--text-muted);
  border: 1px solid rgba(0,212,255,0.15); cursor: pointer;
  transition: all var(--transition);
}
.tag-cloud-item:hover { background: rgba(0,212,255,0.15); color: var(--accent); }

/* Progress bars */
.progress-bar {
  height: 8px; background: rgba(255,255,255,0.08);
  border-radius: 4px; overflow: hidden; margin-top: 8px;
}
.progress-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 1.5s ease;
}

/* Tooltip */
[data-tooltip] { position: relative; cursor: help; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute; bottom: 125%; left: 50%; transform: translateX(-50%);
  background: var(--primary-light); color: var(--text);
  padding: 6px 12px; border-radius: 6px; font-size: 12px;
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity var(--transition); z-index: 100;
  border: 1px solid var(--card-border);
}
[data-tooltip]:hover::after { opacity: 1; }