/* ===== 快赚坞·创富平台 全站共享样式 ===== */

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

:root {
    --primary: #7C3AED;
    --primary-dark: #5B21B6;
    --primary-light: #EDE9FE;
    --primary-shadow: rgba(124,58,237,0.25);
    --primary-hover: #6D28D9;
    --btn-shadow: rgba(124,58,237,0.35);
    --btn-hover-shadow: rgba(124,58,237,0.45);
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border: #E5E7EB;
    --bg-light: #F9FAFB;
    --white: #FFFFFF;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ===== 页面容器 ===== */
.page-wrap { background: var(--bg-light); }
.page-container { max-width: 1440px; margin: 0 auto; padding: 0 56px 56px; }
@media (max-width: 768px) { .page-container { padding: 0 16px 40px; } }

.section-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
}
.section-title-wrap { flex: 1; }
.section-title-line {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}
.section-title-bar {
    width: 4px; height: 22px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    flex-shrink: 0;
}
.section-title {
    font-size: 22px; font-weight: 700; color: var(--text-primary);
    display: flex; align-items: center; gap: 8px;
}
.section-title .icon { font-size: 20px; }
.section-subtitle {
    font-size: 14px; color: var(--text-muted); margin-top: 2px;
}
.section-more {
    color: var(--primary); font-weight: 600; font-size: 14px;
    display: inline-flex; align-items: center; gap: 4px;
    white-space: nowrap; flex-shrink: 0;
    padding: 8px 0;
    transition: all 0.3s;
}
.section-more:hover { color: var(--primary-dark); transform: translateX(3px); }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 24px; border-radius: 10px; font-weight: 600;
    font-size: 14px; border: 2px solid transparent;
    transition: all 0.3s; cursor: pointer;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; border-color: transparent;
    box-shadow: 0 4px 12px rgba(79,70,229,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(79,70,229,0.4); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { padding: 7px 16px; font-size: 13px; }

/* ===== 导航栏 ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    height: 78px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    justify-content: space-between;
    padding: 0 72px;
    z-index: 1000;
    box-shadow: 0 1px 0 rgba(0,0,0,0.02), 0 8px 24px rgba(15,23,42,0.04);
}
@media (max-width: 900px) { .navbar { padding: 0 20px; } }

.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-icon {
    width: 44px; height: 44px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 22px; box-shadow: 0 6px 16px rgba(79, 70, 229, 0.25);
}
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.nav-logo-text .main {
    font-size: 22px; font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-logo-text .sub { font-size: 11px; font-weight: 500; color: var(--text-muted); letter-spacing: 2px; margin-top: 2px; }

.nav-links { display: flex; gap: 6px; list-style: none; }
.nav-links a {
    position: relative; color: var(--text-primary); text-decoration: none;
    font-weight: 600; transition: all 0.3s; padding: 12px 20px;
    border-radius: 10px; font-size: 16px; display: inline-flex; align-items: center; gap: 6px;
}
.nav-links a:hover, .nav-links a.active { background: var(--primary-light); color: var(--primary); }
.nav-links a.active::after {
    content: ""; position: absolute; bottom: 4px; left: 20px; right: 20px;
    height: 2px; background: var(--primary); border-radius: 2px;
}
.nav-caret { font-size: 10px; transition: transform 0.3s; }
.nav-links li:hover .nav-caret { transform: rotate(180deg); }

/* 二级下拉菜单 */
.nav-dropdown {
    position: absolute; top: 100%; left: 0;
    min-width: 180px; background: #fff;
    border-radius: 12px; box-shadow: 0 16px 40px rgba(15,23,42,0.12);
    border: 1px solid var(--border); padding: 8px;
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: all 0.3s; z-index: 100;
}
.nav-links li:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown a {
    display: block; padding: 10px 14px; font-size: 14px;
    border-radius: 8px; color: var(--text-secondary); font-weight: 500;
}
.nav-dropdown a:hover { background: var(--primary-light); color: var(--primary); }
.nav-dropdown a::after { display: none; }
.nav-links li { position: relative; }

/* 右侧：登录注册 */
.nav-auth { display: flex; align-items: center; gap: 10px; }

/* 移动端汉堡按钮 */
.hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s; }
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .navbar { height: 64px; }
}

/* 移动端菜单 */
.mobile-menu {
    display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
    z-index: 999; overflow-y: auto; padding: 20px;
}
.mobile-menu.open { display: block; }
.mobile-menu-item {
    display: block; padding: 14px 0; font-size: 17px; font-weight: 600;
    color: var(--text-primary); border-bottom: 1px solid var(--border);
}
.mobile-menu-item:hover { color: var(--primary); }
.mobile-sub { padding: 10px 0; border-bottom: 1px solid var(--border); }
.mobile-sub a { display: block; padding: 8px 0; font-size: 15px; color: var(--text-secondary); font-weight: 500; }

/* ===== 卡片通用 ===== */
.content-card {
    background: var(--white); border-radius: 12px; overflow: hidden;
    transition: all 0.3s; cursor: pointer; border: 1px solid var(--border); position: relative;
}
.content-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); border-color: var(--primary); }

.card-cover {
    height: 140px; background: linear-gradient(135deg, #E0E7FF, #C7D2FE);
    display: flex; align-items: center; justify-content: center;
    font-size: 56px; position: relative;
}
.card-category-badge {
    position: absolute; top: 8px; left: 8px; padding: 3px 10px;
    background: rgba(255,255,255,0.9); border-radius: 12px; font-size: 11px; font-weight: 500; color: var(--primary);
}
.card-body { padding: 14px; }
.card-title {
    font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 40px;
}
.card-desc {
    font-size: 12px; color: var(--text-muted); margin-bottom: 10px;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.card-tags { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.card-tag { padding: 2px 8px; background: var(--primary-light); color: var(--primary); border-radius: 10px; font-size: 11px; }
.card-tag.success { background: #DCFCE7; color: #16A34A; }
.card-tag.warning { background: #FEF3C7; color: #D97706; }
.card-tag.vip { background: linear-gradient(135deg, #FBBF24, #F59E0B); color: white; }
.card-stats { display: flex; gap: 12px; font-size: 12px; color: var(--text-muted); }
.card-stats span { display: flex; align-items: center; gap: 3px; }

/* ===== 内容网格 ===== */
.content-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 1100px) { .content-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .content-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; } }
@media (max-width: 480px) { .content-grid { grid-template-columns: 1fr; } }

/* ===== 项目类型标签 ===== */
.prj-type-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.prj-type-tag {
    font-size: 10.5px; font-weight: 700; padding: 3px 9px;
    border-radius: 14px; backdrop-filter: blur(6px); letter-spacing: 0.2px;
}
.prj-type-tag.pipe { background: rgba(99,102,241,0.95); color: #fff; }
.prj-type-tag.once { background: rgba(249,115,22,0.95); color: #fff; }
.prj-type-tag.loop { background: rgba(16,185,129,0.95); color: #fff; }
.prj-type-tag.team-auth {
    background: linear-gradient(135deg, rgba(251,191,36,0.95), rgba(245,158,11,0.95)); color: #fff;
    display: inline-flex; align-items: center; gap: 2px;
}

/* ===== 筛选器 ===== */
.filter-box {
    background: #fff; border-radius: 16px; padding: 20px 22px;
    margin-bottom: 24px; box-shadow: 0 2px 8px rgba(15,23,42,0.04);
    border: 1px solid var(--border);
}
.filter-row {
    display: flex; align-items: flex-start; gap: 18px;
    padding: 10px 0; border-bottom: 1px dashed var(--border);
}
.filter-row:last-child { border-bottom: none; padding-bottom: 0; }
.filter-row:first-child { padding-top: 0; }
.filter-label { width: 90px; flex-shrink: 0; color: var(--text-secondary); font-weight: 600; font-size: 14px; padding-top: 6px; }
.filter-options { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.filter-op {
    padding: 6px 14px; font-size: 13px; border-radius: 8px; cursor: pointer;
    color: var(--text-secondary); transition: all 0.2s; font-weight: 500;
}
.filter-op:hover { color: var(--primary); background: var(--primary-light); }
.filter-op.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; box-shadow: 0 4px 10px rgba(79,70,229,0.25);
}

/* ===== 列表工具栏 ===== */
.list-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
.list-toolbar .count { font-size: 14px; color: var(--text-secondary); font-weight: 500; }
.list-toolbar .count strong { color: var(--primary); font-size: 18px; font-weight: 800; margin: 0 4px; }
.list-sort { display: inline-flex; gap: 4px; background: #fff; padding: 5px; border-radius: 10px; border: 1px solid var(--border); }
.list-sort button { padding: 6px 14px; border: none; background: transparent; border-radius: 7px; font-size: 13px; font-weight: 600; color: var(--text-secondary); cursor: pointer; }
.list-sort button.active { background: var(--primary-light); color: var(--primary); }

/* ===== 分页 ===== */
.pg-pagination { display: flex; justify-content: center; align-items: center; margin-top: 40px; gap: 6px; }
.pg-pagination .pg {
    padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
    font-size: 14px; cursor: pointer; color: var(--text-secondary);
    background: #fff; transition: all 0.2s; min-width: 40px; text-align: center;
}
.pg-pagination .pg:hover { color: var(--primary); border-color: var(--primary); }
.pg-pagination .pg.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; border-color: transparent;
    box-shadow: 0 6px 14px rgba(79,70,229,0.25);
}

/* ===== 社群卡片 ===== */
.sns-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 1024px) { .sns-grid { grid-template-columns: 1fr; } }
.sns-card {
    position: relative; border-radius: 20px; overflow: hidden; padding: 28px 26px 24px;
    color: #fff; min-height: 320px; display: flex; flex-direction: column;
    justify-content: space-between; cursor: pointer;
    transition: transform 0.35s, box-shadow 0.35s;
}
.sns-card:hover { transform: translateY(-6px); box-shadow: 0 22px 44px rgba(15,23,42,0.18); }
.sns-card::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 20% 10%, rgba(255,255,255,0.22), transparent 40%), radial-gradient(circle at 85% 80%, rgba(255,255,255,0.15), transparent 45%); }
.sns-card::after { content: ""; position: absolute; right: -40px; bottom: -40px; width: 220px; height: 220px; border-radius: 50%; background: rgba(255,255,255,0.06); }
.sns-card > * { position: relative; z-index: 1; }
.sns-card.a { background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #D946EF 100%); }
.sns-card.b { background: linear-gradient(135deg, #F97316 0%, #EF4444 45%, #E11D48 100%); }
.sns-card.c { background: linear-gradient(135deg, #0EA5E9 0%, #2563EB 50%, #7C3AED 100%); }
.sns-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.sns-icon { width: 60px; height: 60px; border-radius: 16px; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); display: flex; align-items: center; justify-content: center; font-size: 30px; border: 1px solid rgba(255,255,255,0.22); }
.sns-price-wrap { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.sns-original-price { font-size: 12px; color: rgba(255,255,255,0.5); text-decoration: line-through; font-weight: 500; }
.sns-price { background: rgba(0,0,0,0.2); backdrop-filter: blur(8px); padding: 4px 10px; border-radius: 20px; font-weight: 700; font-size: 14px; border: 1px solid rgba(255,255,255,0.15); white-space: nowrap; }
.sns-title { font-size: 24px; font-weight: 800; margin-top: 18px; margin-bottom: 8px; letter-spacing: -0.3px; line-height: 1.3; }
.sns-slogan { font-size: 13.5px; opacity: 0.88; line-height: 1.65; margin-bottom: 18px; }
.sns-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 18px; }
.sns-stat { background: rgba(255,255,255,0.14); backdrop-filter: blur(8px); border-radius: 10px; padding: 10px 12px; border: 1px solid rgba(255,255,255,0.12); }
.sns-stat .n { font-size: 18px; font-weight: 800; line-height: 1.2; }
.sns-stat .l { font-size: 11.5px; opacity: 0.8; margin-top: 3px; }
.sns-benefits { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.sns-benefits span { font-size: 11.5px; padding: 4px 10px; border-radius: 16px; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.18); }
.sns-join { display: flex; align-items: center; justify-content: space-between; }
.sns-join .btn-sns { background: #fff; border-radius: 12px; padding: 11px 22px; font-weight: 700; font-size: 14.5px; color: #111827; border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: all 0.25s; box-shadow: 0 6px 14px rgba(0,0,0,0.15); }
.sns-join .btn-sns:hover { transform: translateY(-1px); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }
.sns-join .note { font-size: 12px; opacity: 0.85; }

/* ===== 资源网格 ===== */
.res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 1100px) { .res-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .res-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .res-grid { grid-template-columns: 1fr; } }
.res-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 18px 16px 16px; transition: all 0.3s; cursor: pointer; position: relative; }
.res-card:hover { transform: translateY(-3px); border-color: transparent; box-shadow: 0 14px 26px rgba(79,70,229,0.1); }
.res-card-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.res-card-icon { width: 40px; height: 40px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.res-card-icon.bd { background: #DBEAFE; }
.res-card-icon.kk { background: #FCE7F3; }
.res-card-icon.xl { background: #FEF3C7; }
.res-card-icon.tb { background: #D1FAE5; }
.res-card-title { font-size: 15px; font-weight: 700; color: var(--text-primary); line-height: 1.4; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.res-card-desc { font-size: 12.5px; color: var(--text-muted); line-height: 1.6; min-height: 42px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.res-card-meta { display: flex; align-items: center; justify-content: space-between; padding-top: 10px; border-top: 1px dashed var(--border); font-size: 11.5px; color: var(--text-secondary); }
.res-card-tag { position: absolute; top: 10px; right: 10px; font-size: 10.5px; font-weight: 700; padding: 3px 8px; border-radius: 14px; }
.res-card-tag.team { background: #FEF3C7; color: #B45309; }
.res-card-tag.vip  { background: #FEE2E2; color: #B91C1C; }
.res-card-tag.free { background: #D1FAE5; color: #047857; }

/* ===== 专题卡片 ===== */
.topics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 1100px) { .topics { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .topics { grid-template-columns: repeat(2, 1fr); gap: 14px; } }
@media (max-width: 480px) { .topics { grid-template-columns: 1fr; } }
.topic-card { position: relative; padding: 24px 22px 22px; border-radius: 16px; background: var(--white); border: 1px solid var(--border); cursor: pointer; transition: all 0.35s cubic-bezier(0.4,0,0.2,1); overflow: hidden; }
.topic-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--primary-dark)); opacity: 0.9; }
.topic-card:hover { transform: translateY(-5px); border-color: transparent; box-shadow: 0 14px 30px rgba(79,70,229,0.12); }
.topic-card:hover::before { height: 5px; }
.topic-card-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; background: linear-gradient(135deg, var(--primary-light), #EEF2FF); margin-bottom: 14px; }
.topic-card-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
.topic-card-desc { font-size: 12.5px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; min-height: 40px; }
.topic-card-foot { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px dashed var(--border); font-size: 12px; color: var(--text-secondary); }
.topic-card-count { display: inline-flex; align-items: center; gap: 4px; }
.topic-card-go { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 3px; }
.topic-card:hover .topic-card-go { transform: translateX(2px); transition: transform 0.3s; }
.topic-card.hot::before { background: linear-gradient(90deg, #F97316, #EF4444); }
.topic-card.hot .topic-card-icon { background: linear-gradient(135deg, #FFF7ED, #FEE2E2); }
.topic-card.new::before { background: linear-gradient(90deg, #10B981, #06B6D4); }
.topic-card.new .topic-card-icon { background: linear-gradient(135deg, #ECFDF5, #CFFAFE); }
.topic-card.vip::before { background: linear-gradient(90deg, #F59E0B, #D97706); }
.topic-card.vip .topic-card-icon { background: linear-gradient(135deg, #FFFBEB, #FEF3C7); }
.topic-badge { position: absolute; top: 12px; right: 14px; font-size: 10.5px; padding: 3px 8px; border-radius: 20px; font-weight: 600; letter-spacing: 0.3px; }
.topic-badge.hot { background: #FEF3C7; color: #D97706; }
.topic-badge.new { background: #D1FAE5; color: #059669; }
.topic-badge.vip { background: #FEE2E2; color: #DC2626; }

/* ===== 热门榜单 ===== */
.rank-tabs { display: flex; gap: 12px; margin-bottom: 20px; }
.rank-tab { padding: 8px 20px; background: transparent; border: none; cursor: pointer; font-size: 14px; color: var(--text-secondary); border-bottom: 2px solid transparent; transition: all 0.3s; }
.rank-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.rank-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (max-width: 600px) { .rank-list { grid-template-columns: 1fr; } }
.rank-item { display: flex; align-items: center; padding: 12px 16px; background: var(--white); border-radius: 8px; border: 1px solid var(--border); cursor: pointer; transition: all 0.2s; gap: 12px; }
.rank-item:hover { border-color: var(--primary); background: var(--primary-light); }
.rank-num { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }
.rank-num.r1 { background: linear-gradient(135deg, #EF4444, #F87171); color: white; }
.rank-num.r2 { background: linear-gradient(135deg, #F97316, #FB923C); color: white; }
.rank-num.r3 { background: linear-gradient(135deg, #EAB308, #FACC15); color: white; }
.rank-num.other { background: var(--bg-light); color: var(--text-muted); }
.rank-info { flex: 1; min-width: 0; }
.rank-title { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-views { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ===== 工具卡片 ===== */
.tool-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 1100px) { .tool-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 768px) { .tool-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .tool-grid { grid-template-columns: repeat(2, 1fr); } }
.tool-card { background: var(--white); padding: 20px; border-radius: 12px; text-align: center; cursor: pointer; transition: all 0.3s; border: 1px solid var(--border); }
.tool-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: 0 8px 20px rgba(102,126,234,0.15); }
.tool-icon { width: 56px; height: 56px; background: var(--primary-light); border-radius: 14px; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; font-size: 28px; }
.tool-name { font-size: 15px; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.tool-desc { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 34px; }
.tool-tags { display: flex; justify-content: center; gap: 6px; }
.tool-tag { padding: 2px 8px; border-radius: 8px; font-size: 11px; font-weight: 500; }
.tool-tag.free { background: #DCFCE7; color: #16A34A; }
.tool-tag.paid { background: #FEF3C7; color: #D97706; }
.tool-tag.vip { background: linear-gradient(135deg, var(--warning), #D97706); color: white; }

/* ===== 项目大列表 ===== */
.project-list { display: flex; flex-direction: column; gap: 16px; }
.project-card { display: grid; grid-template-columns: 220px 1fr auto; gap: 22px; background: #fff; border-radius: 16px; padding: 18px; border: 1px solid var(--border); transition: all 0.3s; cursor: pointer; position: relative; }
@media (max-width: 900px) { .project-card { grid-template-columns: 1fr; gap: 16px; } }
.project-card:hover { border-color: transparent; transform: translateY(-2px); box-shadow: 0 14px 28px rgba(15,23,42,0.08); }
.project-thumb { aspect-ratio: 4/3; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 48px; color: #fff; position: relative; overflow: hidden; }
.project-thumb.g1 { background: linear-gradient(135deg, #F97316, #EF4444); }
.project-thumb.g2 { background: linear-gradient(135deg, #8B5CF6, #D946EF); }
.project-thumb.g3 { background: linear-gradient(135deg, #0EA5E9, #2563EB); }
.project-thumb.g4 { background: linear-gradient(135deg, #10B981, #06B6D4); }
.project-thumb .hot-icon { position: absolute; top: 10px; left: 10px; background: rgba(255,255,255,0.25); backdrop-filter: blur(6px); padding: 3px 8px; border-radius: 14px; font-size: 11px; font-weight: 700; color: #fff; }
.project-info .ptype-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.project-info h3 { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; color: var(--text-primary); }
.project-info p { font-size: 13.5px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.project-tags span { font-size: 12px; padding: 3px 10px; background: var(--bg-light); border-radius: 6px; color: var(--text-secondary); font-weight: 500; }
.project-stats { display: flex; flex-wrap: wrap; gap: 16px; font-size: 12.5px; color: var(--text-secondary); }
.project-stats span { display: inline-flex; align-items: center; gap: 4px; }
.project-action { display: flex; flex-direction: column; align-items: flex-end; justify-content: space-between; gap: 12px; min-width: 120px; }
.project-action .earn { text-align: right; }
.project-action .earn .label { font-size: 11.5px; color: var(--text-muted); }
.project-action .earn .num { display: block; font-size: 22px; font-weight: 800; background: linear-gradient(135deg, #F97316, #EF4444); -webkit-background-clip: text; -webkit-text-fill-color: transparent; line-height: 1.2; margin-top: 4px; }
.project-action .earn .num.small { font-size: 17px; }

/* ===== 资源下载列表 ===== */
.res-download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 900px) { .res-download-grid { grid-template-columns: 1fr; } }
.res-download-card { display: grid; grid-template-columns: 76px 1fr auto; gap: 16px; background: #fff; border-radius: 14px; padding: 16px; border: 1px solid var(--border); align-items: center; transition: all 0.3s; cursor: pointer; }
@media (max-width: 600px) { .res-download-card { grid-template-columns: 64px 1fr; gap: 14px; } }
.res-download-card:hover { border-color: transparent; box-shadow: 0 14px 26px rgba(79,70,229,0.1); }
.r-icon { width: 76px; height: 76px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 32px; color: #fff; position: relative; }
.r-icon.bd { background: linear-gradient(135deg, #3B82F6, #1D4ED8); }
.r-icon.kk { background: linear-gradient(135deg, #EC4899, #BE185D); }
.r-icon.xl { background: linear-gradient(135deg, #0EA5E9, #0369A1); }
.r-icon.tb { background: linear-gradient(135deg, #10B981, #047857); }
.r-icon .disk-tag { position: absolute; bottom: -6px; right: -6px; font-size: 9px; padding: 2px 6px; border-radius: 10px; background: #fff; color: var(--text-primary); font-weight: 700; border: 1px solid var(--border); }
.r-info h4 { font-size: 15px; font-weight: 700; color: var(--text-primary); line-height: 1.4; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.r-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; }
.r-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.r-tags span { font-size: 11px; padding: 2px 8px; border-radius: 6px; background: var(--bg-light); color: var(--text-secondary); font-weight: 500; }
.r-download { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; min-width: 150px; }
.r-download .cost { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 8px; font-weight: 700; font-size: 12.5px; }
.r-download .cost.free { background: #D1FAE5; color: #047857; }
.r-download .cost.vip  { background: #FEE2E2; color: #B91C1C; }
.r-download .cost.point{ background: #FEF3C7; color: #B45309; }
.r-download .btn-download { display: inline-flex; align-items: center; gap: 5px; padding: 8px 16px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; font-weight: 700; font-size: 13px; border: none; cursor: pointer; box-shadow: 0 4px 10px rgba(79,70,229,0.25); transition: all 0.2s; }
.r-download .btn-download:hover { transform: translateY(-1px); box-shadow: 0 8px 16px rgba(79,70,229,0.3); }
.r-download .disks { display: flex; gap: 5px; font-size: 12px; }
.r-download .disks .d { padding: 2px 8px; border-radius: 14px; border: 1px solid var(--border); color: var(--text-secondary); cursor: pointer; font-weight: 600; }
.r-download .disks .d.on { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }

/* ===== 热点情报 ===== */
.news-platforms { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 900px) { .news-platforms { grid-template-columns: 1fr; } }
.news-board { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); transition: all 0.3s; }
.news-board:hover { box-shadow: 0 16px 28px rgba(15,23,42,0.08); transform: translateY(-2px); }
.board-head { padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 10px; color: #fff; font-weight: 700; }
.board-head.weibo  { background: linear-gradient(135deg, #E11D48, #EF4444); }
.board-head.douyin { background: linear-gradient(135deg, #0F172A, #1E293B); }
.board-head.zhihu  { background: linear-gradient(135deg, #0284C7, #0369A1); }
.board-head.baidu  { background: linear-gradient(135deg, #2563EB, #1D4ED8); }
.board-head.toutiao{ background: linear-gradient(135deg, #F97316, #DC2626); }
.board-head.xhs    { background: linear-gradient(135deg, #EC4899, #BE185D); }
.board-head .left { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.board-head .update { font-size: 11.5px; opacity: 0.85; padding: 4px 10px; border-radius: 20px; background: rgba(255,255,255,0.18); backdrop-filter: blur(4px); }
.board-list { padding: 6px 10px 12px; }
.board-item { display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center; padding: 10px 12px; border-radius: 10px; cursor: pointer; transition: background 0.2s; }
.board-item:hover { background: var(--bg-light); }
.board-item + .board-item { border-top: 1px dashed rgba(15,23,42,0.06); }
.board-rank { width: 24px; height: 24px; border-radius: 7px; background: #F1F5F9; color: var(--text-secondary); font-weight: 800; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.board-rank.top1 { background: linear-gradient(135deg, #EF4444, #B91C1C); color:#fff; }
.board-rank.top2 { background: linear-gradient(135deg, #F97316, #C2410C); color:#fff; }
.board-rank.top3 { background: linear-gradient(135deg, #F59E0B, #B45309); color:#fff; }
.board-title { font-size: 13.5px; color: var(--text-primary); font-weight: 500; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.board-title .hot-tag { display: inline-block; margin-left: 6px; padding: 1px 6px; border-radius: 6px; background: #FEE2E2; color: #B91C1C; font-size: 10px; font-weight: 700; }
.board-title .new-tag { display: inline-block; margin-left: 6px; padding: 1px 6px; border-radius: 6px; background: #D1FAE5; color: #047857; font-size: 10px; font-weight: 700; }
.board-heat { font-size: 11.5px; color: var(--text-secondary); font-weight: 600; white-space: nowrap; display: inline-flex; align-items: center; gap: 3px; }
.board-heat.h { color: #EF4444; }

.news-read-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 900px) { .news-read-grid { grid-template-columns: 1fr; } }
.news-read-card { display: grid; grid-template-columns: 110px 1fr; gap: 16px; background: #fff; border-radius: 14px; padding: 14px; border: 1px solid var(--border); transition: all 0.3s; cursor: pointer; }
@media (max-width: 560px) { .news-read-card { grid-template-columns: 1fr; gap: 12px; } }
.news-read-card:hover { border-color: transparent; box-shadow: 0 14px 28px rgba(79,70,229,0.1); transform: translateY(-2px); }
.nr-cover { aspect-ratio: 4/3; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 34px; color: #fff; }
.nr-cover.g1 { background: linear-gradient(135deg, #F97316, #EF4444); }
.nr-cover.g2 { background: linear-gradient(135deg, #8B5CF6, #D946EF); }
.nr-cover.g3 { background: linear-gradient(135deg, #10B981, #0EA5E9); }
.nr-cover.g4 { background: linear-gradient(135deg, #3B82F6, #8B5CF6); }
.nr-info h5 { font-size: 15px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; color: var(--text-primary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nr-info .nr-meta { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--text-secondary); margin-bottom: 10px; }
.nr-info p { font-size: 13px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== 详情页 ===== */
.detail-container { max-width: 900px; margin: 0 auto; padding: 96px 24px 48px; }
.detail-header { background: var(--white); padding: 32px; border-radius: 12px; margin-bottom: 24px; }
.detail-tags { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.detail-tag { padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 500; }
.detail-title { font-size: 28px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.detail-meta { display: flex; gap: 24px; color: var(--text-muted); font-size: 14px; flex-wrap: wrap; }
.detail-section { background: var(--white); margin-bottom: 20px; border-radius: 12px; overflow: hidden; }
.detail-section-header { padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; border-bottom: 1px solid transparent; transition: all 0.3s; }
.detail-section-header:hover { background: var(--bg-light); }
.detail-section-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.detail-section-toggle { color: var(--primary); font-size: 20px; transition: transform 0.3s; }
.detail-section-body { padding: 0 24px 24px; color: var(--text-secondary); line-height: 1.8; }
.step-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.step-item:last-child { border-bottom: none; }
.step-number { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.step-content h4 { font-size: 15px; color: var(--text-primary); margin-bottom: 6px; }
.step-content p { font-size: 14px; }
.faq-item { padding: 16px 0; border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-q { font-weight: 600; color: var(--text-primary); margin-bottom: 8px; font-size: 14px; }
.faq-a { color: var(--text-secondary); font-size: 14px; }

/* ===== VIP页面 ===== */
.vip-auth-toggle { display: flex; justify-content: center; margin-bottom: 32px; }
.auth-toggle-box { display: inline-flex; background: var(--white); border-radius: 12px; padding: 4px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.auth-toggle-btn { padding: 12px 32px; background: transparent; border: none; border-radius: 8px; cursor: pointer; font-size: 15px; font-weight: 500; color: var(--text-secondary); transition: all 0.3s; }
.auth-toggle-btn.active { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--white); }
.vip-packages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
@media (max-width: 900px) { .vip-packages { grid-template-columns: 1fr; } }
.vip-package { background: var(--white); padding: 32px 24px; border-radius: 12px; text-align: center; border: 2px solid var(--border); transition: all 0.3s; position: relative; }
.vip-package.recommended { border-color: var(--primary); transform: scale(1.02); box-shadow: 0 12px 32px rgba(102,126,234,0.2); }
.vip-package-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); padding: 4px 16px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; border-radius: 12px; font-size: 12px; font-weight: 500; }
.vip-package h3 { font-size: 20px; margin-bottom: 12px; }
.vip-price { font-size: 40px; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 4px; }
.vip-duration { color: var(--text-muted); margin-bottom: 24px; }
.vip-features { text-align: left; margin-bottom: 24px; list-style: none; }
.vip-features li { padding: 8px 0; color: var(--text-secondary); font-size: 14px; }
.vip-features .yes { color: var(--success); }
.vip-license-box { background: var(--white); padding: 32px; border-radius: 12px; text-align: center; margin-bottom: 40px; }
.vip-license-input { display: flex; max-width: 500px; margin: 0 auto 16px; gap: 12px; }
.vip-license-input input { flex: 1; padding: 14px 20px; border: 2px solid var(--border); border-radius: 8px; font-size: 15px; outline: none; transition: border-color 0.3s; }
.vip-license-input input:focus { border-color: var(--primary); }
.vip-features-table { background: var(--white); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.vip-table { width: 100%; border-collapse: separate; border-spacing: 0; table-layout: fixed; }
.vip-table th, .vip-table td { padding: 14px 12px; text-align: center; border-bottom: 1px solid var(--border); vertical-align: middle; font-size: 13px; }
.vip-table thead th { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--white); font-weight: 600; font-size: 13px; text-align: center; }
.vip-table thead th:first-child { width: 38%; text-align: left; padding-left: 20px; }
.vip-table thead th:nth-child(2) { width: 18%; background: #9CA3AF; }
.vip-table thead th:nth-child(3) { width: 22%; }
.vip-table thead th:nth-child(4) { width: 22%; }
.vip-table tbody td { color: var(--text-secondary); }
.vip-table tbody td:first-child { text-align: left; padding-left: 20px; color: var(--text-primary); font-weight: 500; }
.vip-table tbody td:nth-child(2) { background: var(--bg-light); color: var(--text-muted); }
.vip-table tbody tr:nth-child(even) td { background: #FAFBFF; }
.vip-table tbody tr:nth-child(even) td:nth-child(2) { background: #EEF0F4; }
.vip-table tbody tr:hover td, .vip-table tbody tr:hover td:nth-child(2), .vip-table tbody tr:hover:nth-child(even) td:nth-child(2) { background: var(--primary-light) !important; color: var(--text-primary) !important; }

/* ===== 登录/注册表单 ===== */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #EEF2FF, #F0FDF4, #FEF3C7); padding: 20px; }
.auth-box { background: #fff; border-radius: 20px; padding: 48px 40px; width: 100%; max-width: 440px; box-shadow: 0 20px 60px rgba(15,23,42,0.1); }
.auth-logo { display: flex; align-items: center; gap: 10px; justify-content: center; margin-bottom: 32px; }
.auth-logo-icon { width: 48px; height: 48px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; }
.auth-logo-text { font-size: 20px; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.auth-title { font-size: 24px; font-weight: 700; text-align: center; margin-bottom: 8px; color: var(--text-primary); }
.auth-sub { font-size: 14px; color: var(--text-muted); text-align: center; margin-bottom: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.form-group input { width: 100%; padding: 14px 16px; border: 2px solid var(--border); border-radius: 10px; font-size: 15px; transition: border-color 0.3s; outline: none; }
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(102,126,234,0.1); }
.form-group .hint { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.form-agree { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 24px; }
.form-agree input[type="checkbox"] { width: 16px; height: 16px; margin-top: 2px; flex-shrink: 0; cursor: pointer; }
.form-agree label { font-size: 13px; color: var(--text-secondary); cursor: pointer; }
.form-agree label a { color: var(--primary); }
.auth-btn { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border: none; border-radius: 12px; font-size: 16px; font-weight: 700; cursor: pointer; transition: all 0.3s; box-shadow: 0 4px 12px rgba(79,70,229,0.3); }
.auth-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(79,70,229,0.4); }
.auth-switch { text-align: center; margin-top: 20px; font-size: 14px; color: var(--text-secondary); }
.auth-switch a { color: var(--primary); font-weight: 600; }
.auth-divider { display: flex; align-items: center; gap: 16px; margin: 24px 0; color: var(--text-muted); font-size: 13px; }
.auth-divider::before, .auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.auth-third { display: flex; gap: 12px; }
.auth-third button { flex: 1; padding: 12px; border: 2px solid var(--border); border-radius: 10px; background: #fff; font-size: 14px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; transition: all 0.2s; }
.auth-third button:hover { border-color: var(--primary); background: var(--primary-light); }

/* ===== 用户中心 ===== */
.user-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; padding-top: 100px; max-width: 1200px; margin: 0 auto; padding-left: 56px; padding-right: 56px; padding-bottom: 60px; }
@media (max-width: 900px) { .user-layout { grid-template-columns: 1fr; padding: 80px 16px 40px; } }
.user-sidebar { background: #fff; border-radius: 16px; padding: 24px 16px; border: 1px solid var(--border); height: fit-content; position: sticky; top: 100px; }
.user-sidebar-user { text-align: center; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.user-avatar { width: 72px; height: 72px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; font-size: 28px; color: #fff; margin: 0 auto 10px; }
.user-name { font-size: 17px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.user-level { font-size: 12px; color: var(--primary); font-weight: 600; padding: 2px 10px; background: var(--primary-light); border-radius: 20px; display: inline-block; }
.user-menu-item { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 10px; font-size: 14px; font-weight: 500; color: var(--text-secondary); cursor: pointer; transition: all 0.2s; }
.user-menu-item:hover, .user-menu-item.active { background: var(--primary-light); color: var(--primary); }
.user-menu-item .badge { margin-left: auto; background: var(--error); color: #fff; font-size: 11px; padding: 2px 6px; border-radius: 10px; }

/* ===== 课程卡片 ===== */
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 1100px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .course-grid { grid-template-columns: 1fr; } }
.course-card { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); transition: all 0.3s; cursor: pointer; display: flex; flex-direction: column; }
.course-card:hover { transform: translateY(-4px); box-shadow: 0 18px 32px rgba(79,70,229,0.1); border-color: transparent; }
.course-cover { aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center; font-size: 56px; position: relative; color: #fff; }
.course-cover.g1 { background: linear-gradient(135deg, #667EEA, #764BA2); }
.course-cover.g2 { background: linear-gradient(135deg, #F093FB, #F5576C); }
.course-cover.g3 { background: linear-gradient(135deg, #4FACFE, #00F2FE); }
.course-cover.g4 { background: linear-gradient(135deg, #43E97B, #38F9D7); }
.course-cover.g5 { background: linear-gradient(135deg, #FA709A, #FEE140); }
.course-cover.g6 { background: linear-gradient(135deg, #30CFD0, #330867); }
.course-badge { position: absolute; top: 12px; left: 12px; background: rgba(0,0,0,0.6); color: #fff; backdrop-filter: blur(4px); padding: 4px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 700; }
.course-price { position: absolute; bottom: 12px; right: 12px; background: rgba(0,0,0,0.7); color: #fff; padding: 5px 12px; border-radius: 20px; font-weight: 800; font-size: 14px; letter-spacing: 0.3px; }
.course-body { padding: 18px 18px 16px; flex: 1; display: flex; flex-direction: column; }
.course-title { font-size: 16px; font-weight: 700; line-height: 1.45; color: var(--text-primary); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.course-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.course-meta { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px dashed var(--border); font-size: 12px; color: var(--text-secondary); }

/* ===== 工具页筛选 ===== */
.tool-category-tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 16px; }
.tool-category-tab { padding: 10px 24px; background: transparent; border: none; cursor: pointer; border-radius: 24px; font-size: 15px; color: var(--text-secondary); transition: all 0.3s; font-weight: 500; }
.tool-category-tab.active { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--white); }
.tool-sub-categories { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.tool-sub-tag { padding: 5px 14px; background: var(--white); border: 1px solid var(--border); border-radius: 16px; cursor: pointer; font-size: 13px; color: var(--text-secondary); transition: all 0.3s; }
.tool-sub-tag.active { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

/* ===== 专题详情页 ===== */
.topic-hero { background: linear-gradient(135deg, #667EEA, #764BA2); border-radius: 20px; padding: 48px; color: #fff; margin-bottom: 32px; position: relative; overflow: hidden; }
.topic-hero::before { content: ""; position: absolute; top: -50%; right: -10%; width: 400px; height: 400px; border-radius: 50%; background: rgba(255,255,255,0.08); }
.topic-hero-icon { width: 72px; height: 72px; border-radius: 18px; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-size: 36px; margin-bottom: 20px; }
.topic-hero h1 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.topic-hero p { font-size: 15px; opacity: 0.88; line-height: 1.7; max-width: 600px; margin-bottom: 24px; }
.topic-hero-stats { display: flex; gap: 32px; }
.topic-hero-stats span { font-size: 14px; opacity: 0.88; display: flex; align-items: center; gap: 6px; }

/* ===== 后台通用 ===== */
.admin-layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; background: #F0F2F5; }
.admin-sidebar { background: #fff; border-right: 1px solid #E5E7EB; padding: 0; position: fixed; width: 220px; height: 100vh; overflow-y: auto; }
.admin-logo { padding: 20px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #E5E7EB; font-weight: 700; font-size: 16px; }
.admin-logo-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.admin-menu { padding: 12px; }
.admin-menu-title { font-size: 11px; color: var(--text-muted); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 12px 12px 6px; }
.admin-menu-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--text-secondary); cursor: pointer; transition: all 0.2s; margin-bottom: 2px; }
.admin-menu-item:hover { background: var(--bg-light); color: var(--primary); }
.admin-menu-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.admin-menu-item .icon { font-size: 16px; }
.admin-content { margin-left: 220px; padding: 24px 32px; }
.admin-topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; padding: 16px 24px; background: #fff; border-radius: 12px; border: 1px solid #E5E7EB; }
.admin-topbar h2 { font-size: 18px; font-weight: 700; }
.admin-card { background: #fff; border-radius: 12px; border: 1px solid #E5E7EB; padding: 24px; margin-bottom: 20px; }
.admin-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.admin-card-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
@media (max-width: 900px) { .admin-stats { grid-template-columns: repeat(2, 1fr); } }
.stat-card { background: #fff; border-radius: 12px; padding: 20px; border: 1px solid #E5E7EB; }
.stat-card .label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 800; color: var(--text-primary); }
.stat-card .change { font-size: 12px; color: var(--success); margin-top: 4px; }
.stat-card .change.down { color: var(--error); }
.admin-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; border: 1px solid #E5E7EB; }
.admin-table th { background: var(--bg-light); padding: 14px 16px; text-align: left; font-size: 13px; font-weight: 600; color: var(--text-secondary); border-bottom: 1px solid #E5E7EB; }
.admin-table td { padding: 14px 16px; font-size: 14px; color: var(--text-primary); border-bottom: 1px solid #E5E7EB; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--primary-light); }
.admin-table .avatar { width: 36px; height: 36px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.status-tag { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.status-tag.success { background: #D1FAE5; color: #047857; }
.status-tag.warning { background: #FEF3C7; color: #B45309; }
.status-tag.error { background: #FEE2E2; color: #DC2626; }
.status-tag.info { background: var(--primary-light); color: var(--primary); }
.admin-btn { display: inline-flex; align-items: center; gap: 4px; padding: 6px 14px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: all 0.2s; }
.admin-btn.primary { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.admin-btn.danger { background: #FEE2E2; color: #DC2626; border-color: #DC2626; }
.admin-btn.success { background: #D1FAE5; color: #047857; border-color: #047857; }
.admin-btn:hover { opacity: 0.85; }
.admin-action { display: flex; gap: 8px; }
.admin-tab-bar { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.admin-tab { padding: 12px 20px; font-size: 14px; font-weight: 600; color: var(--text-secondary); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all 0.2s; }
.admin-tab:hover { color: var(--primary); }
.admin-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.admin-form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 768px) { .admin-form-row { grid-template-columns: 1fr; } }
.admin-form-group { margin-bottom: 16px; }
.admin-form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.admin-form-group input, .admin-form-group select, .admin-form-group textarea { width: 100%; padding: 10px 14px; border: 2px solid var(--border); border-radius: 8px; font-size: 14px; outline: none; transition: border-color 0.3s; font-family: inherit; }
.admin-form-group input:focus, .admin-form-group select:focus, .admin-form-group textarea:focus { border-color: var(--primary); }
.admin-form-group textarea { resize: vertical; min-height: 100px; }
.admin-form-group .hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.admin-search-bar { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.admin-search-bar input { flex: 1; min-width: 200px; padding: 10px 14px; border: 2px solid var(--border); border-radius: 8px; font-size: 14px; outline: none; }
.admin-search-bar input:focus { border-color: var(--primary); }
.admin-pagination { display: flex; justify-content: center; align-items: center; margin-top: 24px; gap: 6px; }

/* ===== 页脚 ===== */
.site-footer {
    background: #1F2937;
    color: #9CA3AF;
    padding: 48px 0 24px;
    margin-top: 40px;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}
.footer-brand-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 32px;
}
.footer-logo {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    margin-bottom: 12px;
}
.footer-brand-center h3 {
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    margin: 0;
}
.footer-brand-center p {
    color: #9CA3AF;
    font-size: 14px;
    margin: 0;
}
.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    padding: 20px 0;
    border-top: 1px solid #374151;
    border-bottom: 1px solid #374151;
    margin-bottom: 20px;
}
.footer-nav a {
    color: #D1D5DB;
    font-size: 14px;
    padding: 8px 20px;
    transition: color 0.3s;
    text-decoration: none;
    position: relative;
}
.footer-nav a:hover {
    color: #fff;
}
.footer-copyright {
    padding-top: 8px;
}
.footer-copyright p {
    color: #6B7280;
    font-size: 13px;
    margin: 0;
}
/* 右侧浮动工具栏 */
.side-toolbar {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 9990;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.side-toolbar-item {
    width: 52px;
    height: 52px;
    background: #fff;
    border: 1px solid #E5E7EB;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #4B5563;
    transition: all 0.2s;
    font-size: 11px;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.side-toolbar-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}
.side-toolbar-item span {
    line-height: 1;
    margin-top: 2px;
}
.side-wechat {
    background: linear-gradient(135deg, #10B981, #059669) !important;
    color: #fff !important;
    border-color: transparent !important;
}
.side-wechat:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}
@media (max-width: 768px) {
    .footer-nav a {
        padding: 6px 12px;
        font-size: 13px;
    }
    .side-toolbar {
        right: 12px;
        bottom: 80px;
    }
}

/* ===== 辅助 ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-muted { color: var(--text-muted); }
.text-primary-color { color: var(--primary); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

/* ===== 热点实时更新提示条 ===== */
.update-notice-bar {
    background: linear-gradient(90deg, #FEF3C7 0%, #FDE68A 50%, #FEF3C7 100%);
    border-bottom: 1px solid #FCD34D;
    padding: 8px 0;
    font-size: 13px;
}
.update-notice-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 56px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.update-icon { font-size: 16px; }
.update-text {
    color: #B45309;
    font-weight: 600;
}
.update-time {
    color: #92400E;
    font-size: 12px;
}
.hot-search-words {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 16px;
    padding-left: 16px;
    border-left: 2px solid #FCD34D;
}
.hsw-label {
    color: #92400E;
    font-weight: 500;
}
.hsw-item {
    color: #DC2626;
    font-weight: 500;
    padding: 2px 8px;
    background: #FEE2E2;
    border-radius: 4px;
    transition: all 0.2s;
}
.hsw-item:hover {
    background: #DC2626;
    color: #fff;
}
@media (max-width: 768px) {
    .update-notice-content { padding: 0 16px; flex-wrap: wrap; }
    .hot-search-words { margin-left: 0; padding-left: 0; border-left: none; margin-top: 4px; }
}

/* ===== 微信导流悬浮按钮 ===== */
.float-wechat-btn {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
}
.wechat-btn-main {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #07C160, #06AD56);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(6, 173, 86, 0.4);
    transition: all 0.3s;
}
.wechat-btn-main:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(6, 173, 86, 0.5);
}
.wechat-icon { font-size: 24px; }
.wechat-text {
    font-size: 11px;
    color: #fff;
    font-weight: 600;
}
.wechat-hover-area {
    position: absolute;
    right: 70px;
    top: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s;
}
.wechat-qr-popup {
    background: #fff;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    min-width: 160px;
}
.wechat-qr-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.wechat-qr-code {
    width: 100px;
    height: 100px;
    background: var(--bg-light);
    margin: 0 auto 12px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}
.wechat-qr-hint {
    font-size: 12px;
    color: var(--text-secondary);
}
.float-wechat-btn:hover .wechat-hover-area {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}
@media (max-width: 768px) {
    .float-wechat-btn { right: 12px; bottom: 80px; }
    .wechat-btn-main { width: 48px; height: 48px; }
    .wechat-icon { font-size: 20px; }
}

/* ===== 会员专属标记 ===== */
.vip-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: linear-gradient(135deg, #F59E0B, #D97706);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
}
.vip-exclusive {
    position: relative;
}
.vip-exclusive::after {
    content: '👑';
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 16px;
}