/* 科普百科网 - 解梦主题 */
* {margin:0;padding:0;box-sizing:border-box}
body {font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#1e293b;background:#f8fafc;line-height:1.6}
a {text-decoration:none;color:inherit;transition:all .2s}
.container {max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.header {background:#fff;box-shadow:0 2px 10px rgba(99,102,241,.08);position:sticky;top:0;z-index:100}
.header-inner {max-width:1200px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;justify-content:space-between}
.logo {display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:#4f46e5}
.logo-icon {width:40px;height:40px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px}
.nav {display:flex;gap:32px}
.nav a {font-size:16px;color:#64748b;font-weight:500;padding:8px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.active {color:#4f46e5;border-bottom-color:#4f46e5}
.mobile-menu-btn {display:none;background:none;border:none;font-size:24px;color:#4f46e5;cursor:pointer}

/* Hero */
.hero {background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#a855f7 100%);padding:60px 0;color:#fff;text-align:center}
.hero h1 {font-size:42px;font-weight:700;margin-bottom:12px}
.hero p {font-size:18px;opacity:.9;margin-bottom:30px}
.search-box {max-width:600px;margin:0 auto;background:#fff;border-radius:50px;padding:6px;display:flex;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.search-box input {flex:1;border:none;padding:14px 24px;border-radius:50px;font-size:16px;outline:none;color:#1e293b}
.search-box button {background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;border:none;padding:14px 36px;border-radius:50px;font-size:16px;font-weight:500;cursor:pointer}

/* Cards */
.card {background:#fff;border-radius:16px;padding:28px;margin-bottom:24px;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.card h2 {font-size:24px;color:#1e293b;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid #f1f5f9;display:flex;align-items:center;gap:10px}

/* Category Grid */
.category-grid {display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:32px}
.category-item {background:#fff;border-radius:16px;padding:24px 16px;text-align:center;transition:all .3s;box-shadow:0 4px 20px rgba(99,102,241,.06)}
.category-item:hover {transform:translateY(-4px);box-shadow:0 8px 30px rgba(99,102,241,.15)}
.category-icon {font-size:40px;margin-bottom:12px}
.category-item h3 {font-size:16px;color:#1e293b;margin-bottom:6px}
.category-item p {font-size:13px;color:#94a3b8}

/* Dream List */
.dream-grid {display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.dream-item {padding:12px 16px;background:#f8fafc;border-radius:10px;color:#475569;display:flex;align-items:center;gap:8px}
.dream-item:hover {background:#eef2ff;color:#4f46e5}

/* Hot List */
.hot-list {counter-reset:hot;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.hot-item {padding:12px 16px;display:flex;align-items:center;gap:12px;border-radius:10px;background:#f8fafc}
.hot-item:hover {background:#eef2ff}
.hot-rank {counter-increment:hot;content:counter(hot);width:24px;height:24px;border-radius:6px;background:#e2e8f0;color:#64748b;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.hot-item:nth-child(-n+3) .hot-rank {background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff}
.hot-item a {flex:1;color:#334155;font-size:15px}

/* Article Detail */
.article-content h2 {font-size:22px;color:#4f46e5;margin:24px 0 16px;padding-left:12px;border-left:4px solid #6366f1;border-bottom:none}
.article-content p {font-size:16px;line-height:1.9;color:#475569;margin-bottom:12px}

/* Sidebar */
.main-layout {display:grid;grid-template-columns:1fr 300px;gap:24px;margin-top:24px}
.widget {background:#fff;border-radius:16px;padding:20px;margin-bottom:20px;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.widget h4 {font-size:17px;color:#1e293b;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #f1f5f9}
.widget ul {list-style:none}
.widget ul li {padding:8px 0;border-bottom:1px dashed #f1f5f9;font-size:14px}
.widget ul li:last-child {border-bottom:none}
.widget ul li a {color:#64748b}
.widget ul li a:hover {color:#4f46e5}

/* Breadcrumb */
.breadcrumb {padding:16px 0;font-size:14px;color:#94a3b8}
.breadcrumb a {color:#64748b}
.breadcrumb a:hover {color:#4f46e5}

/* Footer */
.footer {background:#1e293b;color:#cbd5e1;padding:48px 0 24px;margin-top:60px}
.footer-grid {display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer h4 {color:#fff;font-size:17px;margin-bottom:16px}
.footer ul {list-style:none}
.footer ul li {padding:6px 0}
.footer ul li a {color:#94a3b8;font-size:14px}
.footer ul li a:hover {color:#a78bfa}
.copyright {text-align:center;padding-top:24px;border-top:1px solid #334155;font-size:14px;color:#94a3b8}
.copyright a {color:#94a3b8}
.copyright a:hover {color:#a78bfa}

/* Friend Links */
.friend-links {background:#fff;border-radius:16px;padding:24px;margin-bottom:24px}
.friend-links h3 {font-size:20px;margin-bottom:16px;color:#1e293b}
.links {display:flex;flex-wrap:wrap;gap:16px}
.links a {padding:6px 14px;background:#f8fafc;border-radius:8px;font-size:14px;color:#64748b}
.links a:hover {background:#eef2ff;color:#4f46e5}

/* Responsive */
@media (max-width:768px) {
    .nav {display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:0 4px 20px rgba(0,0,0,.08)}
    .nav.show {display:flex}
    .mobile-menu-btn {display:block}
    .hero h1 {font-size:28px}
    .hero p {font-size:15px}
    .search-box {flex-direction:column;border-radius:16px;padding:10px}
    .search-box input {border-radius:10px;margin-bottom:10px}
    .search-box button {border-radius:10px}
    .category-grid {grid-template-columns:repeat(3,1fr)}
    .dream-grid,.hot-list {grid-template-columns:1fr}
    .main-layout {grid-template-columns:1fr}
    .footer-grid {grid-template-columns:1fr;gap:24px}
}
@media (max-width:480px) {
    .category-grid {grid-template-columns:repeat(2,1fr)}
}