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

:root {
  --primary: #6c5ce7;
  --primary-light: #a29bfe;
  --accent: #fd79a8;
  --accent2: #00cec9;
  --bg: #0a0a0f;
  --bg2: #12121a;
  --bg3: #1a1a28;
  --card: #16161f;
  --card-hover: #1e1e2e;
  --border: rgba(255,255,255,0.07);
  --text: #e8e8f0;
  --text-muted: #8888aa;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --glow: 0 0 40px rgba(108,92,231,0.3);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
  background: rgba(10,10,15,0.9);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}
.logo-icon { font-size: 22px; }
.logo-text { background: linear-gradient(135deg, #fff, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.version-badge {
  font-size: 11px;
  font-weight: 600;
  background: rgba(108,92,231,0.2);
  border: 1px solid rgba(108,92,231,0.4);
  color: var(--primary-light);
  padding: 2px 8px;
  border-radius: 20px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: var(--border); }
.nav-btn {
  background: linear-gradient(135deg, var(--primary), #8e7cf7) !important;
  color: #fff !important;
  padding: 7px 18px !important;
  border-radius: 8px !important;
  font-weight: 600;
  font-size: 13px !important;
}
.menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 20px; cursor: pointer; }

/* ===== 通用区块样式 ===== */
section { padding: 96px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary-light);
  background: rgba(108,92,231,0.12);
  border: 1px solid rgba(108,92,231,0.25);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-tag.light { color: #fff; background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); }
.section-header h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; margin-bottom: 16px; }
.section-header p { color: var(--text-muted); font-size: 17px; max-width: 600px; margin: 0 auto; }

/* ===== HERO ===== */
.hero-section {
  position: relative;
  overflow: hidden; /* 只在这层裁剪背景光晕 */
}
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 48px 60px;
  position: relative;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}
.orb1 { width: 500px; height: 500px; background: radial-gradient(circle, #6c5ce7, transparent); top: -150px; left: -100px; }
.orb2 { width: 400px; height: 400px; background: radial-gradient(circle, #fd79a8, transparent); top: 30%; right: -100px; }
.orb3 { width: 300px; height: 300px; background: radial-gradient(circle, #00cec9, transparent); bottom: -100px; left: 30%; }
.grid-lines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content { position: relative; z-index: 1; flex: 1; max-width: 560px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  background: rgba(108,92,231,0.1);
  border: 1px solid rgba(108,92,231,0.3);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.hero-badge::before { content: '●'; color: #6c5ce7; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero-title {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.gradient-text {
  background: linear-gradient(135deg, #fff 30%, var(--primary-light) 70%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
  text-decoration: none;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8e7cf7);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108,92,231,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(108,92,231,0.5); }
.btn-secondary {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.hero-stats {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 20px;
  padding: 18px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  backdrop-filter: blur(12px);
  position: relative;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.hero-stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(108,92,231,0.06), transparent, rgba(253,121,168,0.06));
  pointer-events: none;
}

.stat { display: flex; flex-direction: column; align-items: center; position: relative; }

.stat-highlight, .stat-highlight2 { position: relative; }
.stat-glow {
  position: absolute;
  inset: -12px;
  background: radial-gradient(ellipse, rgba(108,92,231,0.35), transparent 70%);
  border-radius: 50%;
  animation: glowPulse 2.4s ease-in-out infinite;
  pointer-events: none;
}
.stat-glow.glow2 {
  background: radial-gradient(ellipse, rgba(253,121,168,0.35), transparent 70%);
  animation-delay: 1.2s;
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50%       { opacity: 1;   transform: scale(1.15); }
}

.stat { flex: 1; min-width: 0; }

.stat-num {
  font-size: clamp(20px, 3.5vw, 30px);
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1;
  background: linear-gradient(135deg, #fff 20%, var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  white-space: nowrap;
}
.stat-highlight .stat-num {
  background: linear-gradient(135deg, #fff, #a29bfe, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 8px rgba(108,92,231,0.7));
}
.stat-highlight2 .stat-num {
  background: linear-gradient(135deg, #fff, #fd79a8, #e84393);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 8px rgba(253,121,168,0.7));
}

.stat-label {
  font-size: clamp(10px, 1.5vw, 12px);
  color: var(--text-muted);
  margin-top: 4px;
  white-space: nowrap;
  letter-spacing: 0.3px;
}
.stat-divider { width: 1px; height: 32px; background: linear-gradient(to bottom, transparent, var(--border), transparent); flex-shrink: 0; }

/* ===== 插件模拟图 ===== */
.hero-visual { position: relative; z-index: 1; flex: 1; max-width: 480px; }
.plugin-mockup {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow), var(--glow);
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
.mockup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.mockup-title { font-size: 13px; color: var(--text-muted); margin-left: 8px; }
.mockup-toolbar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 2px;
  padding: 12px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 4px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 18px;
}
.tool-btn small { font-size: 10px; color: var(--text-muted); white-space: nowrap; }
.tool-btn:hover, .tool-btn.active { background: rgba(108,92,231,0.2); }
.tool-btn.active small { color: var(--primary-light); }
.mockup-preview { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.ai-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(108,92,231,0.1);
  border: 1px solid rgba(108,92,231,0.2);
  border-radius: 10px;
  padding: 12px;
}
.ai-icon { font-size: 20px; }
.ai-text { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.ai-line { height: 8px; border-radius: 4px; background: rgba(255,255,255,0.1); }
.ai-line.long { width: 80%; }
.ai-line.short { width: 50%; }
.preview-image { height: 120px; }
.img-placeholder {
  height: 100%;
  border-radius: 10px;
  border: 1px dashed rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  overflow: hidden;
  position: relative;
}
.img-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(108,92,231,0.1), transparent);
  animation: shimmer 2s infinite;
}
@keyframes shimmer { 0%{transform:translateX(-100%)} 100%{transform:translateX(100%)} }

/* ===== 网页版入口 ===== */
.web-portal { background: var(--bg); }
.web-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.web-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
}
.web-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108,92,231,0.5);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.24);
}
.web-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}
.web-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  min-height: 68px;
}
.web-card .cost {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #8fd9ff;
  background: rgba(59, 130, 246, 0.18);
  border: 1px solid rgba(59, 130, 246, 0.38);
}
.feedback-banner {
  margin-top: 22px;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid rgba(253,121,168,0.35);
  background: linear-gradient(135deg, rgba(253,121,168,0.14), rgba(108,92,231,0.08));
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.feedback-banner h3 {
  margin: 0 0 6px;
  font-size: 22px;
}
.feedback-banner p {
  margin: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== 功能区 ===== */
.features { background: var(--bg2); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  border-color: rgba(108,92,231,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow), 0 0 20px rgba(108,92,231,0.15);
}
.feature-card.featured {
  grid-column: span 1;
  background: linear-gradient(135deg, rgba(108,92,231,0.12), rgba(162,155,254,0.05));
  border-color: rgba(108,92,231,0.3);
}
.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.feature-list li {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.feature-list li::before { content: '→'; position: absolute; left: 0; color: var(--primary-light); }

/* ===== AI 区域 ===== */
.ai-section { background: var(--bg); }
.ai-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.ai-content .section-tag { display: inline-block; }
.ai-content h2 { font-size: clamp(28px, 3.5vw, 40px); font-weight: 800; margin: 16px 0; }
.ai-content > p { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.ai-features { display: flex; flex-direction: column; gap: 20px; }
.ai-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.ai-feature-icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108,92,231,0.1);
  border-radius: 12px;
  flex-shrink: 0;
}
.ai-feature-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.ai-feature-item p { font-size: 13px; color: var(--text-muted); }
.ai-presets {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
}
.presets-title { font-size: 14px; font-weight: 700; color: var(--text-muted); margin-bottom: 16px; letter-spacing: 1px; text-transform: uppercase; }
.preset-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tag {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}
.tag:hover, .tag.active {
  background: rgba(108,92,231,0.15);
  border-color: rgba(108,92,231,0.4);
  color: var(--primary-light);
}
.preset-demo { display: flex; align-items: center; gap: 12px; }
.demo-input, .demo-output { flex: 1; }
.demo-label { font-size: 11px; color: var(--text-muted); display: block; margin-bottom: 6px; }
.demo-prompt {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg2);
  border-radius: 8px;
  padding: 10px;
  line-height: 1.6;
  border: 1px solid var(--border);
}
.demo-arrow { font-size: 20px; color: var(--primary-light); }
.demo-result {
  height: 60px;
  background: linear-gradient(135deg, rgba(108,92,231,0.15), rgba(0,206,201,0.1));
  border-radius: 8px;
  border: 1px solid rgba(108,92,231,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 600;
  overflow: hidden;
  position: relative;
}
.result-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(108,92,231,0.15), transparent);
  animation: shimmer 2s infinite;
}

/* ===== 工具区 ===== */
.tools-section { background: var(--bg2); }
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tool-item {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color 0.2s, transform 0.2s;
}
.tool-item:hover { border-color: rgba(108,92,231,0.3); transform: translateY(-3px); }
.tool-icon { font-size: 28px; display: block; margin-bottom: 12px; }
.tool-item h4 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.tool-item p { font-size: 13px; color: var(--text-muted); }

/* ===== 下载区 ===== */
.download { background: var(--bg); }
.download-card {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(108,92,231,0.3);
  position: relative;
  background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(162,155,254,0.05));
}
.download-bg { position: absolute; inset: 0; pointer-events: none; }
.orb-d1 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(108,92,231,0.3), transparent); top: -100px; right: -100px; }
.orb-d2 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(253,121,168,0.2), transparent); bottom: -50px; left: 20%; }
.download-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 56px;
  align-items: center;
}
.download-info h2 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; margin: 16px 0; }
.download-info > p { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.requirements { display: flex; flex-direction: column; gap: 14px; }
.req-item { display: flex; align-items: center; gap: 14px; }
.req-icon { font-size: 22px; width: 44px; height: 44px; background: rgba(255,255,255,0.05); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.req-item strong { display: block; font-size: 14px; font-weight: 700; }
.req-item span { font-size: 13px; color: var(--text-muted); }
.download-actions { display: flex; flex-direction: column; gap: 14px; }
.version-info { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.ver-label { font-size: 13px; color: var(--text-muted); }
.ver-num { font-size: 28px; font-weight: 900; color: var(--primary-light); }
.ver-year { font-size: 12px; color: var(--text-muted); align-self: flex-end; padding-bottom: 4px; }
.btn-download {
  background: linear-gradient(135deg, var(--primary), #8e7cf7);
  color: #fff;
  padding: 16px 28px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(108,92,231,0.4);
  justify-content: center;
}
.btn-download:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(108,92,231,0.5); }
.btn-download svg { width: 22px; height: 22px; }
.btn-outline {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 10px;
  justify-content: center;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); }

/* ===== 社区区 ===== */
.community { background: var(--bg2); }
.community-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.qq-groups, .contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
}
.qq-groups h3, .contact-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.groups-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.group-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 8px;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.group-item.full { opacity: 0.5; }
.group-item.active {
  border-color: rgba(0,206,201,0.5);
  background: rgba(0,206,201,0.08);
  position: relative;
}
.group-item.pulse-group {
  animation: groupPulse 2s ease-in-out infinite;
  border-color: rgba(253,121,168,0.6) !important;
  background: linear-gradient(135deg, rgba(253,121,168,0.1), rgba(108,92,231,0.08)) !important;
  box-shadow: 0 0 16px rgba(253,121,168,0.25);
}
@keyframes groupPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(253,121,168,0.2); border-color: rgba(253,121,168,0.5) !important; }
  50%       { box-shadow: 0 0 24px rgba(253,121,168,0.5); border-color: rgba(253,121,168,0.9) !important; }
}
.pulse-group .active-tag {
  background: linear-gradient(135deg, rgba(253,121,168,0.25), rgba(108,92,231,0.2)) !important;
  color: #fd79a8 !important;
  animation: tagFlicker 1.5s ease-in-out infinite;
}
@keyframes tagFlicker {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.7; }
}
.group-num { font-size: 13px; font-weight: 700; font-family: 'Courier New', monospace; }
.group-tag { font-size: 10px; padding: 2px 8px; border-radius: 10px; font-weight: 600; }
.full-tag { background: rgba(255,255,255,0.05); color: var(--text-muted); }
.active-tag { background: rgba(0,206,201,0.15); color: #00cec9; }
.groups-note { font-size: 14px; color: var(--text-muted); text-align: center; }
.groups-note strong { color: #00cec9; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.contact-item:last-of-type { border-bottom: none; }
.contact-icon { font-size: 22px; width: 44px; height: 44px; background: rgba(108,92,231,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-item strong { display: block; font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.contact-item span, .contact-item a { font-size: 13px; color: var(--text-muted); }
.contact-item a:hover { color: var(--primary-light); }
.support-note {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding: 16px;
  background: rgba(253,121,168,0.08);
  border: 1px solid rgba(253,121,168,0.2);
  border-radius: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.support-note span { font-size: 22px; }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; }
.footer-links { display: flex; gap: 4px; flex-wrap: wrap; }
.footer-links a { font-size: 13px; color: var(--text-muted); padding: 6px 12px; border-radius: 6px; transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-bottom { text-align: center; font-size: 13px; color: var(--text-muted); line-height: 2; }
.footer-bottom a { color: var(--primary-light); }
.footer-bottom a:hover { text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero { padding: 100px 32px 60px; gap: 40px; }
  .web-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-layout { grid-template-columns: 1fr; }
  .download-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  section { padding: 64px 0; }

  /* Hero */
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 90px 20px 48px;
    gap: 40px;
  }
  .hero-content { max-width: 100%; width: 100%; }
  .hero-desc { max-width: 100%; font-size: 15px; }
  .hero-actions { justify-content: center; }
  .hero-visual { width: 100%; max-width: 100%; }

  /* Stats 窄屏自适应 */
  .hero-stats {
    gap: 12px;
    padding: 14px 16px;
    justify-content: space-between;
  }
  .stat-num { font-size: 20px !important; }
  .stat-label { font-size: 10px !important; }
  .stat-divider { height: 28px; }

  /* Nav */
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(20px);
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
  }

  /* 其他区块 */
  .web-grid { grid-template-columns: 1fr; }
  .feedback-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .features-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .community-layout { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 16px; }
  .download-content { padding: 28px 24px; }
  .groups-grid { grid-template-columns: repeat(3, 1fr); }
  .mockup-toolbar { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 480px) {
  .hero { padding: 84px 16px 40px; }
  .hero-title { font-size: 32px; letter-spacing: -0.5px; }
  .hero-badge { font-size: 12px; }

  /* Stats 极窄屏：两行显示 */
  .hero-stats {
    flex-wrap: wrap;
    gap: 10px 16px;
    justify-content: center;
    padding: 14px 16px;
  }
  .stat-divider { display: none; }
  .stat {
    flex: 0 0 calc(50% - 8px);
    align-items: center;
    padding: 8px 4px;
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
  }
  .stat-highlight { background: rgba(108,92,231,0.08) !important; }
  .stat-highlight2 { background: rgba(253,121,168,0.08) !important; }
  .stat-num { font-size: 22px !important; }

  /* 其他 */
  .tools-grid { grid-template-columns: 1fr; }
  .groups-grid { grid-template-columns: repeat(2, 1fr); }
  .preset-demo { flex-direction: column; }
  .demo-arrow { transform: rotate(90deg); }
  .download-content { padding: 24px 16px; }
  .community-layout { gap: 20px; }
  .qq-groups, .contact-card { padding: 24px 16px; }
}