/* ===== CPU-Z 下载站 - 暗色专业主题 ===== */
:root {
  --bg: #0a0e14;
  --bg-card: #131820;
  --bg-card-hover: #1a2232;
  --border: #1e2a3a;
  --text: #c9d1d9;
  --text-secondary: #8b949e;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59,130,246,0.15);
  --green: #22c55e;
  --orange: #f59e0b;
  --purple: #8b5cf6;
  --hero-bg: linear-gradient(160deg, #060b14 0%, #0f1a2e 40%, #0d1525 70%, #060b14 100%);
  --max-width: 1120px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: #60a5fa; }

/* ===== 导航栏 ===== */
.navbar {
  background: rgba(10,14,20,.92);
  border-bottom: 1px solid var(--border);
  position: sticky; top:0; z-index:100;
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: var(--max-width); margin:0 auto; padding:0 20px;
  display:flex; align-items:center; justify-content:space-between; height:58px;
}
.nav-logo { display:flex; align-items:center; gap:10px; font-size:18px; font-weight:700; color:#fff; }
.nav-logo img { width:34px; height:34px; border-radius:6px; }
.nav-links { display:flex; list-style:none; gap:2px; }
.nav-links a {
  color: var(--text-secondary); padding:8px 15px; border-radius:7px;
  font-size:14px; font-weight:500; transition: all .2s;
}
.nav-links a:hover, .nav-links a.active { color:#fff; background:var(--accent-glow); }
.nav-toggle { display:none; background:none; border:none; color:var(--text); font-size:26px; cursor:pointer; }

/* ===== Hero ===== */
.hero {
  background: var(--hero-bg); padding:72px 20px 56px; text-align:center;
  position:relative; overflow:hidden;
}
.hero::after {
  content:''; position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:800px; height:800px;
  background: radial-gradient(circle, rgba(59,130,246,.05) 0%, transparent 70%);
  pointer-events:none;
}
.hero-inner { position:relative; max-width:var(--max-width); margin:0 auto; }
.hero h1 {
  font-size:clamp(28px,5vw,48px); font-weight:800;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #60a5fa 100%);
  background-size:200% 200%;
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  animation: title-shimmer 5s ease-in-out infinite;
  margin-bottom: 16px;
}
@keyframes title-shimmer {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hero-subtitle {
  font-size:16px; color:var(--text-secondary); max-width:620px; margin:0 auto 32px; line-height:1.7;
}
.hero-image-wrap {
  margin-top:32px; display:inline-block; border-radius:12px;
  padding:4px; background: linear-gradient(135deg, #3b82f644, #8b5cf644);
  box-shadow: 0 0 60px rgba(59,130,246,.12);
}
.hero-image-wrap img { display:block; border-radius:10px; max-width:100%; height:auto; }

/* ===== 按钮系统 ===== */
.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 .2s;
  text-decoration:none; line-height:1.4;
}
.btn-primary { background:var(--accent); color:#fff; }
.btn-primary:hover { background:var(--accent-hover); color:#fff; transform:translateY(-1px); box-shadow:0 4px 16px rgba(59,130,246,.3); }
.btn-quark { background: linear-gradient(135deg,#00b42a,#00c853); color:#fff; }
.btn-quark:hover { background: linear-gradient(135deg,#009a23,#00a844); color:#fff; transform:translateY(-1px); box-shadow:0 4px 16px rgba(0,180,42,.3); }
.btn-baidu { background: linear-gradient(135deg,#2468e5,#3b82f6); color:#fff; }
.btn-baidu:hover { background: linear-gradient(135deg,#1a54c0,#2563eb); color:#fff; transform:translateY(-1px); box-shadow:0 4px 16px rgba(36,104,229,.3); }
.btn-compact {
  padding:5px 16px; font-size:13px; border-radius:4px; box-shadow:none;
}
.btn-compact:hover { filter:brightness(1.12); transform: none; box-shadow:none; }
.btn-group { display:flex; gap:12px; flex-wrap:wrap; justify-content:center; }

/* ===== 通用区块 ===== */
.section { max-width:var(--max-width); margin:0 auto; padding:64px 20px; }
.section-title { font-size:26px; font-weight:700; text-align:center; margin-bottom:8px; color:#fff; }
.section-desc { text-align:center; color:var(--text-secondary); margin-bottom:44px; font-size:15px; }

/* ===== 功能卡片 ===== */
.feature-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr)); gap:18px; }
.feature-card {
  background:var(--bg-card); border:1px solid var(--border); border-radius:14px;
  padding:26px 24px; transition: all .3s; cursor:default;
}
.feature-card:hover { background:var(--bg-card-hover); border-color:var(--accent); transform:translateY(-3px); box-shadow:0 8px 28px rgba(0,0,0,.4); }
.feature-icon {
  width:44px; height:44px; border-radius:10px; display:flex; align-items:center;
  justify-content:center; font-size:18px; font-weight:700; margin-bottom:14px;
}
.feature-card h3 { font-size:17px; font-weight:600; color:#fff; margin-bottom:8px; }
.feature-card p { font-size:13.5px; color:var(--text-secondary); line-height:1.65; }

/* ===== 版本信息 ===== */
.version-info {
  background:var(--bg-card); border:1px solid var(--border); border-radius:14px;
  padding:36px; text-align:center; max-width:480px; margin:0 auto;
  position:relative; overflow:hidden;
}
.version-info::before {
  content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%;
  background:radial-gradient(circle at 50% 50%, var(--accent-glow) 0%, transparent 50%);
}
.version-num { font-size:42px; font-weight:800; color:var(--accent); position:relative; margin-bottom:8px; }
.version-detail { color:var(--text-secondary); font-size:14px; line-height:2.2; position:relative; }

/* ===== 截图展示 ===== */
.screenshot-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:16px; }
.screenshot-item {
  background:var(--bg-card); border:1px solid var(--border); border-radius:10px;
  overflow:hidden; cursor:pointer; transition: all .3s;
}
.screenshot-item:hover { border-color:var(--accent); transform:translateY(-4px); box-shadow:0 10px 30px rgba(0,0,0,.5); }
.screenshot-item img { width:100%; aspect-ratio:16/11; object-fit:cover; display:block; }
.screenshot-label { padding:12px; font-size:13px; color:var(--text-secondary); text-align:center; }

/* ===== 下载引导区 ===== */
.download-cta {
  background:var(--bg-card); border:1px solid var(--border); border-radius:16px;
  padding:44px; text-align:center;
  background-image:radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 60%);
}
.download-cta h2 { font-size:24px; color:#fff; margin-bottom:8px; }
.download-cta p { color:var(--text-secondary); margin-bottom:24px; }

/* ===== 下载页 ===== */
.download-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(340px, 1fr)); gap:20px; }
.download-card {
  background:var(--bg-card); border:1px solid var(--border); border-radius:14px;
  padding:32px 28px; text-align:center; transition: all .3s;
  display:flex; flex-direction:column;
}
.download-card:hover { border-color:var(--accent); }
.download-card h3 { font-size:20px; color:#fff; margin-bottom:12px; }
.download-card .extract-code {
  display:inline-block; background:var(--accent-glow); color:var(--accent);
  padding:4px 12px; border-radius:4px; font-size:13px; font-weight:600; margin-left:8px;
}
.download-card .btn-wrap { margin-top:auto; padding-top:20px; }
.download-card .btn-compact { width:100%; justify-content:center; }

.resource-list { list-style:none; text-align:left; margin:16px 0; }
.resource-list li { padding:5px 0; color:var(--text-secondary); font-size:13px; display:flex; align-items:center; gap:8px; }
.resource-list li::before { content:'\2713'; color:var(--green); font-weight:700; font-size:14px; flex-shrink:0; }

/* ===== 弹窗 ===== */
.modal-overlay {
  position:fixed; inset:0; background:rgba(0,0,0,.72); z-index:1000;
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transition: all .3s; backdrop-filter:blur(4px);
}
.modal-overlay.active { opacity:1; visibility:visible; }
.modal-box {
  background:var(--bg-card); border:1px solid var(--border); border-radius:16px;
  padding:32px; max-width:540px; width:92%;
  box-shadow:0 24px 80px rgba(0,0,0,.55); position:relative;
}
.modal-close {
  position:absolute; top:10px; right:14px; background:none; border:none;
  color:var(--text-secondary); font-size:24px; cursor:pointer;
  width:34px; height:34px; display:flex; align-items:center; justify-content:center;
  border-radius:7px; transition:all .2s;
}
.modal-close:hover { background:rgba(255,255,255,.08); color:#fff; }
.modal-body { display:flex; gap:24px; align-items:flex-start; }
.modal-left { flex:1; }
.modal-left h3 { font-size:18px; color:#fff; margin-bottom:12px; }
.modal-right { display:flex; flex-direction:column; align-items:center; gap:10px; }
.qr-wrapper {
  position:relative; width:150px; height:150px; border-radius:12px;
  padding:3px; background:var(--border);
  animation: qr-breathe 2s ease-in-out infinite;
}
@keyframes qr-breathe {
  0%,100% { transform:scale(1); }
  50% { transform:scale(1.05); }
}
.qr-wrapper img { width:100%; height:100%; border-radius:10px; display:block; }
.qr-tip { font-size:12px; color:var(--text-secondary); text-align:center; max-width:150px; line-height:1.5; }
.modal-reminder {
  margin-top:16px; padding:10px 14px;
  background:rgba(245,158,11,.08); border:1px solid rgba(245,158,11,.2);
  border-radius:8px; font-size:12.5px; color:var(--orange); text-align:center;
}

/* ===== FAQ ===== */
.faq-item {
  background:var(--bg-card); border:1px solid var(--border); border-radius:10px;
  margin-bottom:10px; overflow:hidden; transition: all .2s;
}
.faq-question {
  padding:18px 22px; font-size:15px; font-weight:600; color:#e6edf3;
  cursor:pointer; display:flex; align-items:center; justify-content:space-between;
  user-select:none; transition: color .2s;
}
.faq-question:hover { color:#fff; }
.faq-question::after { content:'+'; font-size:20px; color:var(--text-secondary); transition:transform .3s; }
.faq-item.open .faq-question::after { content:'\2212'; transform:rotate(180deg); }
.faq-answer { padding:0 22px 18px; color:var(--text-secondary); font-size:14px; line-height:1.85; display:none; }
.faq-item.open .faq-answer { display:block; }

/* ===== 功能详情 ===== */
.feature-block {
  background:var(--bg-card); border:1px solid var(--border); border-radius:14px;
  padding:28px; margin-bottom:18px; display:flex; gap:24px; align-items:flex-start;
}
.feature-block:hover { border-color:#334155; }
.feature-block-img {
  flex-shrink:0; width:200px; border-radius:10px; overflow:hidden;
  border:1px solid var(--border);
}
.feature-block-img img { width:100%; display:block; }
.feature-block-text h3 { font-size:19px; color:#fff; margin-bottom:8px; }
.feature-badge {
  display:inline-block; padding:3px 10px; border-radius:4px; font-size:12px;
  font-weight:600; color:#fff;
}
.feature-block-text p { font-size:14px; color:var(--text-secondary); line-height:1.8; }

/* ===== 面包屑 ===== */
.breadcrumb { max-width:var(--max-width); margin:0 auto; padding:14px 20px 0; font-size:13px; color:var(--text-secondary); }
.breadcrumb a { color:var(--text-secondary); }
.breadcrumb a:hover { color:var(--accent); }
.breadcrumb span { color:var(--text); }

/* ===== 页脚 ===== */
.footer {
  background:var(--bg-card); border-top:1px solid var(--border); padding:24px 20px; text-align:center; margin-top:32px;
}
.footer-inner { max-width:var(--max-width); margin:0 auto; }
.footer p { font-size:13px; color:var(--text-secondary); line-height:1.8; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero { padding:48px 16px 40px; }
  .hero h1 { font-size:26px; }
  .hero-subtitle { font-size:14px; }
  .section { padding:40px 16px; }
  .section-title { font-size:22px; }
  .nav-links { display:none; position:absolute; top:58px; left:0; right:0; flex-direction:column; background:var(--bg-card); border-bottom:1px solid var(--border); padding:8px; }
  .nav-links.open { display:flex; }
  .nav-toggle { display:block; }
  .modal-body { flex-direction:column; align-items:center; }
  .feature-block { flex-direction:column; }
  .feature-block-img { width:100%; max-width:280px; }
  .btn-group { flex-direction:column; align-items:stretch; }
  .download-grid { grid-template-columns:1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size:22px; }
}