/* ============================================================
   Magic Cube — Enterprise Halo 2.x Theme
   基于「魔方约课」SAAS 品牌着陆页视觉语言
   ============================================================ */

:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-light: #60A5FA;
  --accent: #0EA5E9;
  --accent-light: #38BDF8;
  --gradient-1: linear-gradient(135deg, #3B82F6, #60A5FA);
  --gradient-2: linear-gradient(135deg, #0EA5E9, #38BDF8);
  --gradient-3: linear-gradient(135deg, #2563EB, #60A5FA);
  --text-dark: #1a1a2e;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --bg-primary: #ffffff;
  --bg-light: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 25px rgba(59,130,246,0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-w: 1200px;
  --nav-h: 70px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  font-family:var(--font); color:var(--text-dark);
  background:var(--bg-primary); line-height:1.7; overflow-x:hidden;
}
a { color:var(--primary); text-decoration:none; transition:var(--transition); }
a:hover { color:var(--primary-dark); }
img { max-width:100%; height:auto; display:block; }
.container { max-width:var(--max-w); margin:0 auto; padding:0 24px; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm); z-index: 1000; transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.nav-wrapper {
  display: flex; justify-content: space-between; align-items: center; height: var(--nav-h);
}
.logo a { display: flex; align-items: center; gap: 10px; font-size:1.5rem; font-weight:700; color:var(--text-dark); text-decoration:none; }
.logo-text { color: var(--text-dark); }
.logo-img { height: 40px; width: auto; display: block; }
.nav-menu { display: flex; list-style: none; gap: 40px; }
.nav-menu a {
  color: var(--text-dark); font-weight: 500; font-size: 0.95rem;
  text-decoration: none; position: relative; transition: var(--transition);
}
.nav-menu a::after {
  content: ''; position: absolute; bottom: -5px; left: 0;
  width: 0; height: 2px; background: var(--gradient-1);
  transition: width 0.3s ease; border-radius: 1px;
}
.nav-menu a:hover { color: var(--primary); }
.nav-menu a:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 15px; }
.btn-outline {
  padding: 8px 20px; border-radius: 25px; font-weight: 600;
  font-size: 0.9rem; color: var(--primary); border: 2px solid var(--primary);
  background: transparent; transition: var(--transition); text-decoration: none;
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.mobile-menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.mobile-menu-toggle span { width: 25px; height: 3px; background: var(--text-dark); border-radius: 3px; transition: var(--transition); }

/* ===== 英雄区 ===== */
.hero {
  position:relative; min-height:100vh; display:flex; align-items:center;
  padding-top:var(--nav-h); overflow:hidden;
}
.hero-bg {
  position:absolute; inset:0; z-index:-1;
  background: radial-gradient(circle at 20% 50%,rgba(59,130,246,0.08) 0%,transparent 50%),
              radial-gradient(circle at 80% 50%,rgba(14,165,233,0.08) 0%,transparent 50%),
              linear-gradient(135deg,#f5f7fa,#e8f0fe);
  animation:bgPulse 8s ease-in-out infinite;
}
@keyframes bgPulse { 0%,100%{opacity:1} 50%{opacity:0.85} }
.hero-content { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; padding:60px 0; }
.hero-title { font-size:3.8rem; font-weight:800; line-height:1.1; }
.gradient-text {
  background:var(--gradient-1); -webkit-background-clip:text;
  -webkit-text-fill-color:transparent; background-clip:text; display:inline-block;
}
.hero-tagline { font-size:1.6rem; font-weight:600; color:var(--text-light); margin:15px 0; }
.hero-subtitle {
  font-size:1.1rem; color:var(--text-muted); line-height:1.8; margin-bottom:30px;
  white-space:pre-line;
}
.hero-stats { display:flex; gap:40px; margin:30px 0; }
.stat-item { text-align:center; }
.stat-number { font-size:2.2rem; font-weight:800; color:var(--primary); margin-bottom:4px; }
.stat-label { font-size:0.9rem; color:var(--text-muted); }
.hero-buttons { display:flex; gap:20px; }
.btn-hero, .btn-hero-outline {
  padding:14px 36px; border-radius:30px; font-size:1.05rem;
  font-weight:600; text-decoration:none; transition:var(--transition);
  display:inline-flex; align-items:center; gap:8px;
}
.btn-hero {
  background:var(--gradient-1); color:#fff;
  box-shadow:var(--shadow-lg),var(--shadow-glow); position:relative; overflow:hidden;
}
.btn-hero:hover { transform:translateY(-3px) scale(1.03); box-shadow:var(--shadow-xl),0 0 40px rgba(59,130,246,0.5); }
.btn-hero-outline {
  color:var(--primary); border:2px solid var(--primary); background:transparent;
}
.btn-hero-outline:hover { background:var(--gradient-1); color:#fff; border-color:transparent; transform:translateY(-3px); box-shadow:var(--shadow-lg); }

/* 英雄区设备卡片 */
.hero-devices { position:relative; height:500px; display:flex; align-items:center; justify-content:center; perspective:1000px; }
.device-card { position:relative; width:300px; z-index:2; animation:float 6s ease-in-out infinite; transition:var(--transition); }
.device-card:hover { transform:translateY(-15px) scale(1.03); }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-15px)} }
.card-glow {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  width:130%; height:130%;
  background:radial-gradient(circle,rgba(59,130,246,0.25) 0%,transparent 70%);
  border-radius:50%; filter:blur(35px); z-index:0;
  animation:pulseGlow 3s ease-in-out infinite;
}
@keyframes pulseGlow { 0%,100%{opacity:0.5;transform:translate(-50%,-50%) scale(1)} 50%{opacity:0.9;transform:translate(-50%,-50%) scale(1.08)} }
.card-shell {
  position:relative; width:100%; aspect-ratio:9/19;
  background:linear-gradient(145deg,#1a1a2e,#2d2d44);
  border-radius:42px; padding:12px;
  box-shadow:0 30px 80px rgba(0,0,0,0.35),0 0 0 1px rgba(255,255,255,0.08),inset 0 1px 2px rgba(255,255,255,0.06);
  overflow:hidden;
}
.card-screen {
  width:100%; height:100%;
  background:linear-gradient(135deg,#3B82F6,#0EA5E9);
  border-radius:32px; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:16px; color:#fff;
}
.card-screen p { font-size:1.2rem; font-weight:600; }
.device-screenshot { width:100%; height:100%; object-fit:cover; border-radius:32px; display:block; }
.hero-decoration { position:absolute; inset:0; pointer-events:none; }
.deco-circle {
  position:absolute; border-radius:50%; border:2px solid rgba(59,130,246,0.12);
  animation:decoFloat 8s ease-in-out infinite;
}
.circle-1 { width:200px;height:200px;top:10%;right:5%; }
.circle-2 { width:140px;height:140px;bottom:15%;right:20%;animation-delay:-3s; }
.circle-3 { width:100px;height:100px;top:30%;left:10%;animation-delay:-5s; }
@keyframes decoFloat { 0%,100%{transform:translate(0,0) scale(1);opacity:.4} 50%{transform:translate(20px,-20px) scale(1.1);opacity:.7} }
.scroll-indicator { position:absolute; bottom:30px; left:50%; transform:translateX(-50%); animation:bounce 2s infinite; }
.scroll-indicator span {
  display:block; width:22px; height:22px;
  border-right:2px solid var(--text-muted); border-bottom:2px solid var(--text-muted);
  transform:rotate(45deg);
}
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(10px)} }

/* ===== 通用区块 ===== */
section { padding:90px 0; }
.section-header { text-align:center; margin-bottom:50px; }
.section-tag {
  display:inline-block; font-size:0.82rem; font-weight:600; letter-spacing:0.15em;
  color:var(--primary); background:rgba(59,130,246,0.1);
  padding:4px 14px; border-radius:20px; margin-bottom:12px; text-transform:uppercase;
}
.section-title { font-size:2.2rem; font-weight:700; margin-bottom:10px; }
.section-desc { color:var(--text-muted); font-size:1.05rem; }

/* ===== 核心优势 ===== */
.features { background:var(--bg-light); }
.features-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:30px; }
.feature-card {
  background:var(--bg-card); border-radius:var(--radius-lg); padding:45px 35px;
  text-align:center; border:2px solid transparent; box-shadow:var(--shadow-md);
  transition:var(--transition); cursor:default;
}
.feature-card:hover { transform:translateY(-10px); box-shadow:var(--shadow-xl); border-color:var(--primary); }
.feature-icon-large {
  width:80px; height:80px; margin:0 auto 25px;
  background:linear-gradient(135deg,rgba(59,130,246,0.1),rgba(96,165,250,0.1));
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  color:var(--primary); transition:var(--transition);
}
.feature-card:hover .feature-icon-large { background:var(--gradient-1); color:#fff; transform:scale(1.1); }
.feature-content h3 { font-size:1.6rem; font-weight:700; margin-bottom:12px; }
.feature-content p { color:var(--text-light); line-height:1.8; margin-bottom:18px; white-space:pre-line; }
.feature-highlight {
  display:inline-block; padding:8px 22px; background:var(--gradient-1);
  color:#fff; border-radius:20px; font-size:0.9rem; font-weight:600;
}

/* ===== 6大核心模块 ===== */
.modules { background:var(--bg-light); }
.modules-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:30px; }
.module-card {
  background:var(--bg-card); padding:40px 30px; border-radius:var(--radius-lg);
  text-align:center; box-shadow:var(--shadow-sm); transition:var(--transition);
  position:relative; overflow:hidden; cursor:default;
}
.module-card::before {
  content:''; position:absolute; top:0; left:0; width:100%; height:4px;
  background:var(--gradient-1); transform:scaleX(0); transform-origin:left;
  transition:transform .3s ease;
}
.module-card:hover::before { transform:scaleX(1); }
.module-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-lg),0 10px 30px rgba(59,130,246,0.12); }
.module-icon {
  width:70px; height:70px; margin:0 auto 20px; border-radius:18px;
  display:flex; align-items:center; justify-content:center; color:#fff;
  transition:var(--transition);
}
.module-card:hover .module-icon { transform:scale(1.1); }
.module-card h3 { font-size:1.2rem; font-weight:600; }

/* ===== 应用场景 ===== */
.scenarios { background:var(--bg-light); }
.scenarios-grid { display:grid; grid-template-columns:repeat(6,1fr); gap:20px; }
.scenario-card {
  background:var(--bg-card); padding:28px 16px; border-radius:var(--radius-lg);
  text-align:center; box-shadow:var(--shadow-sm); transition:var(--transition); cursor:default;
}
.scenario-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.scenario-icon {
  width:64px; height:64px; margin:0 auto 14px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; font-size:1.8rem;
  transition:var(--transition); color:#fff;
}
.scenario-card:hover .scenario-icon { transform:scale(1.12); }
.scenario-card h3 { font-size:0.95rem; font-weight:600; }

/* ===== CTA ===== */
.cta { position:relative; text-align:center; overflow:hidden; padding:90px 0; }
.cta-bg { position:absolute; inset:0; background:var(--gradient-1); z-index:-1; }
.cta-content h2 { font-size:2.5rem; font-weight:700; color:#fff; margin-bottom:15px; }
.cta-content p { font-size:1.15rem; color:rgba(255,255,255,0.9); margin-bottom:25px; }
.cta-benefits { display:flex; justify-content:center; gap:30px; margin-bottom:30px; flex-wrap:wrap; }
.benefit-item { color:#fff; font-size:1rem; font-weight:500; }
.btn-cta {
  display:inline-block; padding:16px 48px; background:#fff; color:var(--primary);
  border-radius:30px; font-size:1.05rem; font-weight:600; text-decoration:none;
  box-shadow:var(--shadow-xl); transition:var(--transition);
}
.btn-cta:hover { transform:translateY(-3px) scale(1.04); box-shadow:0 25px 50px rgba(0,0,0,0.2); }

/* ===== 最新动态 ===== */
.news-section { padding:90px 0; }
.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.news-card {
  background:var(--bg-card); border-radius:var(--radius-lg);
  border:1px solid var(--border); overflow:hidden; transition:var(--transition);
}
.news-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); border-color:transparent; }
.news-thumb { overflow:hidden; max-height:200px; }
.news-thumb img { width:100%; height:200px; object-fit:cover; transition:transform .5s; }
.news-card:hover .news-thumb img { transform:scale(1.05); }
.news-body { padding:22px; }
.news-meta { font-size:0.85rem; color:var(--text-muted); margin-bottom:8px; }
.news-title { font-size:1.1rem; font-weight:600; margin-bottom:8px; line-height:1.4; }
.news-title a { color:var(--text-dark); }
.news-title a:hover { color:var(--primary); }
.news-summary { font-size:0.9rem; color:var(--text-light); line-height:1.6; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.news-more { text-align:center; margin-top:40px; }

/* ===== 联系我们 ===== */
.contact { background:var(--bg-light); }
.contact-wrapper { max-width:var(--max-w); margin:0 auto; }
.contact-title { font-size:2.2rem; font-weight:700; text-align:center; margin-bottom:50px; }
.contact-grid { display:grid; grid-template-columns:1.2fr 1fr; gap:50px; align-items:center; }
.contact-left { display:flex; flex-direction:column; gap:24px; }
.contact-item {
  display:flex; gap:18px; padding:25px; background:var(--bg-card);
  border-radius:15px; box-shadow:var(--shadow-sm);
}
.contact-icon { font-size:2.5rem; }
.contact-item h4 { font-size:1.05rem; font-weight:600; margin-bottom:6px; }
.contact-item p { color:var(--text-light); line-height:1.6; white-space:pre-line; }
.contact-right { display:flex; justify-content:center; align-items:center; }
.qrcode-container {
  text-align:center; padding:28px; background:var(--bg-card);
  border-radius:20px; box-shadow:var(--shadow-md); border:2px solid var(--border);
  transition:var(--transition);
}
.qrcode-container:hover { transform:translateY(-6px); border-color:var(--primary); box-shadow:var(--shadow-lg),0 10px 30px rgba(59,130,246,0.12); }
.qrcode-img { width:200px; height:200px; border-radius:12px; display:block; margin:0 auto; }
.qrcode-text { margin-top:16px; font-size:0.95rem; font-weight:600; color:var(--primary); }
.qrcode-placeholder { padding:20px; color:var(--text-muted); }
.qrcode-placeholder svg { margin:0 auto 10px; display:block; }

/* ===== 页脚 ===== */
.footer { background:var(--bg-light); border-top:1px solid var(--border); padding:60px 0 0; }
.footer-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:40px; padding-bottom:40px; }
.footer-col h4 { font-size:1rem; font-weight:600; margin-bottom:16px; color:var(--text-dark); }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { color:var(--text-light); font-size:0.9rem; }
.footer-col ul li a:hover { color:var(--primary); }
.footer-bottom { border-top:1px solid var(--border); padding:20px 0; text-align:center; color:var(--text-muted); font-size:0.85rem; }
.footer-icp { margin-top:4px; }

/* ===== 返回顶部 ===== */
.back-to-top {
  position:fixed; bottom:30px; right:30px; width:46px; height:46px;
  border-radius:50%; background:var(--gradient-1); color:#fff; border:none;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  box-shadow:var(--shadow-lg),var(--shadow-glow);
  opacity:0; visibility:hidden; transform:translateY(20px);
  transition:var(--transition); z-index:999;
}
.back-to-top.visible { opacity:1; visibility:visible; transform:translateY(0); }
.back-to-top:hover { transform:translateY(-3px); box-shadow:var(--shadow-xl),0 0 35px rgba(59,130,246,0.5); }

/* ===== 内页通用 ===== */
.page-section { padding-top:calc(var(--nav-h) + 50px); padding-bottom:80px; }
.breadcrumb {
  display:flex; align-items:center; gap:8px;
  font-size:0.85rem; color:var(--text-muted); margin-bottom:30px;
}
.breadcrumb a { color:var(--text-light); }
.breadcrumb .sep { opacity:0.5; }
.breadcrumb .current { color:var(--text-muted); }
.page-header { margin-bottom:40px; }
.page-title { font-size:2rem; font-weight:800; text-align:center; margin-bottom:40px; }
.page-title.gradient { background:var(--gradient-1); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.page-desc { color:var(--text-muted); margin-top:8px; }

/* ===== 文章详情 ===== */
.article-detail { max-width:860px; margin:0 auto; }
.article-header { margin-bottom:30px; }
.article-title { font-size:2rem; font-weight:800; line-height:1.3; margin-bottom:14px; }
.article-meta { display:flex; align-items:center; gap:16px; color:var(--text-muted); font-size:0.9rem; flex-wrap:wrap; }
.meta-item { display:flex; align-items:center; gap:6px; color:var(--text-muted); font-size:0.9rem; }
.article-cat { background:rgba(59,130,246,0.1); color:var(--primary); padding:2px 10px; border-radius:12px; font-size:0.85rem; }
.article-cover { border-radius:var(--radius-lg); overflow:hidden; margin-bottom:30px; }
.article-cover img { width:100%; max-height:480px; object-fit:cover; }
.article-content { font-size:1.05rem; line-height:1.85; color:var(--text-dark); }
.article-content h1,.article-content h2,.article-content h3,.article-content h4 { font-weight:700; margin:1.8em 0 0.6em; }
.article-content h1 {font-size:1.8rem} .article-content h2{font-size:1.5rem} .article-content h3{font-size:1.25rem}
.article-content p {margin-bottom:1.2em}
.article-content a {color:var(--primary);text-decoration:underline}
.article-content blockquote {
  border-left:4px solid var(--primary); background:var(--bg-light);
  padding:14px 20px; margin:1.4em 0; border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-light);
}
.article-content pre {
  background:#1e293b; border-radius:var(--radius-sm); padding:20px;
  overflow-x:auto; font-family:monospace; font-size:0.9rem; margin:1.4em 0;
}
.article-content code { font-family:monospace; font-size:0.9em; background:#f1f5f9; padding:2px 6px; border-radius:4px; }
.article-content pre code { background:none; padding:0; color:#e2e8f0; }
.article-content ul,.article-content ol { margin:0 0 1.2em 1.5em; }
.article-content li { margin-bottom:0.3em; }
.article-content img { border-radius:var(--radius-sm); margin:1em 0; }
.article-content table { width:100%; border-collapse:collapse; margin:1.4em 0; }
.article-content th,.article-content td { padding:10px 14px; border:1px solid var(--border); text-align:left; }
.article-content th { background:var(--bg-light); font-weight:600; }
.article-tags { display:flex; align-items:center; gap:10px; margin-top:40px; padding-top:30px; border-top:1px solid var(--border); }
.tags-label { color:var(--text-light); font-size:0.9rem; font-weight:500; }

/* 上下篇导航 */
.post-nav { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:40px; padding-top:30px; border-top:1px solid var(--border); }
.post-nav-item { padding:20px; border-radius:var(--radius-md); border:1px solid var(--border); transition:var(--transition); text-decoration:none !important; display:block; }
.post-nav-item:hover { border-color:var(--primary); box-shadow:var(--shadow-md); }
.post-nav-item.prev { text-align:left; }
.post-nav-item.next { text-align:right; }
.post-nav-direction { display:flex; align-items:center; gap:6px; font-size:0.85rem; color:var(--text-muted); margin-bottom:4px; }
.post-nav-item.next .post-nav-direction { justify-content:flex-end; }
.post-nav-title { font-size:0.95rem; font-weight:600; color:var(--text-dark); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.tag {
  display:inline-block; font-size:0.85rem; color:var(--text-muted);
  background:var(--bg-light); padding:4px 12px; border-radius:14px;
  transition:var(--transition);
}
.tag:hover { background:var(--primary); color:#fff; }

/* 文章评论 */
.article-comments { max-width:860px; margin:40px auto 0; padding-top:30px; border-top:1px solid var(--border); }
.article-comments h3 { font-size:1.2rem; font-weight:600; margin-bottom:20px; }

/* ===== 分类页 ===== */
.categories-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; max-width:860px; margin:0 auto; }
.category-card {
  background:var(--bg-card); border-radius:var(--radius-lg); padding:28px 20px;
  text-align:center; border:1px solid var(--border); box-shadow:var(--shadow-sm);
  transition:var(--transition); display:block;
}
.category-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.category-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin:0 auto 12px; color:#fff; }
.category-card h3 { font-size:1.05rem; font-weight:600; color:var(--text-dark); margin-bottom:4px; }
.category-count { font-size:0.85rem; color:var(--text-muted); }

/* ===== 标签云 ===== */
.tag-cloud { display:flex; flex-wrap:wrap; justify-content:center; gap:14px; max-width:700px; margin:0 auto; }
.tag-cloud .tag { font-size:0.9rem; padding:6px 16px; }

/* ===== 归档 ===== */
.archive-list { max-width:700px; margin:0 auto; }
.archive-year { margin-bottom:35px; }
.archive-year h2 { font-size:1.5rem; font-weight:700; color:var(--primary); margin-bottom:16px; padding-bottom:8px; border-bottom:2px solid var(--border); }

/* 归档卡片网格模式 */
.archive-year-group { margin-bottom:50px; }
.archive-year-title { font-size:1.8rem; font-weight:700; color:var(--primary); margin-bottom:20px; padding-bottom:10px; border-bottom:2px solid var(--border); }
.archive-year-group .posts-grid.grid { grid-template-columns:repeat(3,1fr); }
.archive-year ul { list-style:none; }
.archive-year li { display:flex; gap:16px; padding:10px 0; }
.archive-year time { color:var(--text-muted); font-size:0.85rem; font-family:monospace; min-width:45px; }
.archive-year a { color:var(--text-dark); font-weight:500; }
.archive-year a:hover { color:var(--primary); }

/* ===== 搜索 ===== */
.search-box { max-width:520px; margin:0 auto 40px; }
.search-input-wrapper {
  display:flex; align-items:center; background:var(--bg-card);
  border:2px solid var(--border); border-radius:50px; padding:4px 4px 4px 20px; transition:var(--transition);
}
.search-input-wrapper:focus-within { border-color:var(--primary); box-shadow:0 0 0 3px rgba(59,130,246,0.12); }
.search-input-wrapper svg { color:var(--text-muted); flex-shrink:0; }
.search-input-wrapper input {
  flex:1; border:none; background:transparent; padding:12px 14px;
  font-size:0.95rem; color:var(--text-dark); outline:none; font-family:var(--font);
}
.search-input-wrapper input::placeholder { color:var(--text-muted); }
.search-input-wrapper button {
  background:var(--gradient-1); color:#fff; border:none;
  padding:10px 26px; border-radius:50px; font-weight:600; font-size:0.9rem; cursor:pointer; transition:var(--transition);
}
.search-input-wrapper button:hover { box-shadow:var(--shadow-glow); }

/* ===== 错误页 ===== */
.error-page { padding-top:calc(var(--nav-h) + 80px); min-height:80vh; display:flex; align-items:center; }
.error-content { text-align:center; max-width:480px; margin:0 auto; }
.error-code { font-size:7rem; font-weight:900; background:var(--gradient-1); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; line-height:1; margin-bottom:8px; }
.error-title { font-size:1.6rem; font-weight:700; margin-bottom:8px; }
.error-desc { color:var(--text-light); margin-bottom:28px; }
.error-content .btn-hero { display:inline-flex; }

/* ===== 分页 ===== */
.pagination { display:flex; align-items:center; justify-content:center; gap:8px; margin-top:40px; }
.page-btn {
  display:inline-flex; align-items:center; gap:6px; padding:8px 18px;
  border-radius:var(--radius-sm); border:1px solid var(--border);
  color:var(--text-light); font-weight:500; font-size:0.9rem;
  transition:var(--transition); background:var(--bg-card);
}
.page-btn:hover { border-color:var(--primary); color:var(--primary); background:rgba(59,130,246,0.04); }
.page-numbers { display:flex; align-items:center; gap:4px; }
.page-numbers a {
  display:flex; align-items:center; justify-content:center; min-width:34px; height:34px;
  border-radius:var(--radius-sm); border:1px solid var(--border);
  color:var(--text-light); font-weight:500; font-size:0.9rem;
  transition:var(--transition); background:var(--bg-card);
}
.page-numbers a:hover { border-color:var(--primary); color:var(--primary); }
.page-current {
  display:flex; align-items:center; justify-content:center; min-width:34px; height:34px;
  border-radius:var(--radius-sm); background:var(--gradient-1); color:#fff; font-weight:600; font-size:0.9rem;
}

/* ===== 空状态 ===== */
.empty-state { text-align:center; padding:60px 20px; }
.empty-state h3 { font-size:1.2rem; font-weight:600; margin-bottom:6px; }
.empty-state p { color:var(--text-muted); }

/* ===== 动画 ===== */
.fade-in { opacity:0; animation:fadeInUp .8s ease forwards; }
.fade-in-delay-1 { opacity:0; animation:fadeInUp .8s ease .2s forwards; }
.fade-in-delay-2 { opacity:0; animation:fadeInUp .8s ease .4s forwards; }
.fade-in-delay-3 { opacity:0; animation:fadeInUp .8s ease .6s forwards; }
@keyframes fadeInUp { to { opacity:1; transform:translateY(0); } }

/* ===== 响应式 ===== */
@media (max-width:1024px) {
  .hero-content { grid-template-columns:1fr; text-align:center; }
  .hero-stats,.hero-buttons { justify-content:center; }
  .hero-title { font-size:2.8rem; }
  .hero-devices { height:380px; }
  .device-card { width:260px; }
  .modules-grid { grid-template-columns:repeat(2,1fr); }
  .scenarios-grid { grid-template-columns:repeat(3,1fr); }
  .news-grid,.features-grid { grid-template-columns:repeat(2,1fr); }
  .archive-year-group .posts-grid.grid { grid-template-columns:repeat(2,1fr); }
}

@media (max-width:768px) {
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; width: 100%;
    background: var(--bg-primary); flex-direction: column; gap: 0;
    padding: 10px 0; box-shadow: var(--shadow-lg);
    transform: translateY(-100%); opacity: 0;
    transition: var(--transition); pointer-events: none;
    border-bottom: 1px solid var(--border);
  }
  .nav-menu.active { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-menu li { border-bottom: 1px solid var(--border-light); }
  .nav-menu li:last-child { border-bottom: none; }
  .nav-menu a { display: block; padding: 14px 24px; color: var(--text-dark); }
  .nav-menu a::after { display: none; }
  .nav-menu a:hover { color: var(--primary); }
  .mobile-menu-toggle { display: flex; }
  .hero-title { font-size:2.2rem; }
  .hero-tagline { font-size:1.2rem; }
  .hero-stats { gap:24px; }
  .stat-number { font-size:1.6rem; }
  .hero-devices { height:300px; }
  .device-card { width:220px; }
  .card-shell { border-radius:28px; padding:10px; }
  .card-screen { border-radius:22px; }
  .modules-grid,.scenarios-grid,.news-grid,.categories-grid,.footer-grid,.contact-grid { grid-template-columns:1fr; }
  .archive-year-group .posts-grid.grid { grid-template-columns:1fr; }
  .section-title { font-size:1.6rem; }
}