/* ========================================
   埃及国际电力及照明展览会 - 全局样式
   主色调：沙漠金黄色 #D4A843
   ======================================== */

:root {
    --gold-primary: #D4A843;
    --gold-light: #F0D878;
    --gold-dark: #B8860B;
    --gold-pale: #FDF6E3;
    --navy: #1A1A2E;
    --navy-light: #2D2D44;
    --text-main: #2C2C2C;
    --text-secondary: #666666;
    --bg-cream: #FAF8F3;
    --bg-dark: #0F0F1A;
    --white: #FFFFFF;
    --shadow-gold: rgba(212, 168, 67, 0.3);
    --shadow-dark: rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', sans-serif;
    color: var(--text-main);
    line-height: 1.8;
    background: var(--bg-cream);
    overflow-x: hidden;
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-cream);
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--gold-primary), var(--gold-dark));
    border-radius: 4px;
}

/* ===== 选中文字金色 ===== */
::selection {
    background: var(--gold-primary);
    color: var(--white);
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(212, 168, 67, 0.2);
    transition: all 0.4s ease;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
}

.logo img {
    height: 50px;
    width: auto;
    filter: drop-shadow(0 0 10px var(--shadow-gold));
}

.logo-text {
    color: var(--white);
}

.logo-text h1 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gold-primary);
    letter-spacing: 1px;
}

.logo-text span {
    font-size: 0.75rem;
    color: var(--gold-light);
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--gold-primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-cta {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    color: var(--white) !important;
    padding: 10px 25px !important;
    border-radius: 30px;
    font-weight: 600 !important;
    box-shadow: 0 4px 15px var(--shadow-gold);
    transition: all 0.3s ease !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--shadow-gold);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--gold-primary);
    transition: all 0.3s;
}

/* ===== 英雄区 / Banner ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(212, 168, 67, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(184, 134, 11, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, #0F0F1A 0%, #1A1A2E 50%, #0F0F1A 100%);
}

/* 粒子画布 */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 30px;
}

.hero-badge {
    display: inline-block;
    background: rgba(212, 168, 67, 0.15);
    border: 1px solid var(--gold-primary);
    color: var(--gold-primary);
    padding: 8px 25px;
    border-radius: 30px;
    font-size: 0.9rem;
    margin-bottom: 30px;
    animation: fadeInDown 1s ease;
    backdrop-filter: blur(10px);
}

.hero h2 {
    font-size: 3.5rem;
    color: var(--white);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    animation: fadeInUp 1s ease 0.2s both;
    text-shadow: 0 0 40px rgba(212, 168, 67, 0.3);
}

.hero h2 span {
    color: var(--gold-primary);
    display: block;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
    animation: fadeInUp 1s ease 0.6s both;
    flex-wrap: wrap;
}

.hero-meta-item {
    text-align: center;
}

.hero-meta-item .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gold-primary);
    display: block;
    line-height: 1;
}

.hero-meta-item .label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    margin-top: 5px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 0.8s both;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    color: var(--white);
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 30px rgba(212, 168, 67, 0.4);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(212, 168, 67, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 2px solid var(--gold-primary);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--gold-primary);
    color: var(--navy);
    transform: translateY(-3px);
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--gold-primary);
    border-bottom: 2px solid var(--gold-primary);
    transform: rotate(45deg);
}

/* ===== 通用区块 ===== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    padding: 0 20px;
}

.section-label {
    display: inline-block;
    color: var(--gold-primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 15px;
    position: relative;
}

.section-label::before,
.section-label::after {
    content: '◆';
    margin: 0 10px;
    font-size: 0.6rem;
    opacity: 0.5;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 20px;
    line-height: 1.3;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}

/* ===== 卡片系统 ===== */
.card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px var(--shadow-dark);
    transition: all 0.4s ease;
    border: 1px solid rgba(212, 168, 67, 0.1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    border-color: rgba(212, 168, 67, 0.3);
}

.card-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img {
    transform: scale(1.05);
}

.card-body {
    padding: 30px;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 12px;
    line-height: 1.4;
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.05);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.card-meta i {
    color: var(--gold-primary);
}

/* ===== 网格系统 ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }

/* ===== 特色区块（金色背景） ===== */
.gold-section {
    background: linear-gradient(135deg, #1A1A2E 0%, #2D2D44 100%);
    position: relative;
    overflow: hidden;
}

.gold-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.gold-section .section-title,
.gold-section .section-desc {
    color: var(--white);
}

.gold-section .section-desc {
    opacity: 0.8;
}

/* ===== 统计数据 ===== */
.stats-bar {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.stats-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ===== 时间线 ===== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(180deg, var(--gold-primary), var(--gold-dark));
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gold-primary);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--gold-primary);
}

.timeline-date {
    color: var(--gold-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 8px;
}

.timeline-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== 标签 ===== */
.tag {
    display: inline-block;
    background: rgba(212, 168, 67, 0.1);
    color: var(--gold-dark);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-right: 8px;
    margin-bottom: 8px;
    border: 1px solid rgba(212, 168, 67, 0.2);
    transition: all 0.3s;
}

.tag:hover {
    background: var(--gold-primary);
    color: var(--white);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--navy);
    color: var(--white);
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-light), var(--gold-primary));
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--gold-primary);
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
}

.footer-contact-item i {
    color: var(--gold-primary);
    margin-top: 3px;
    font-size: 1.1rem;
}

.footer-title {
    font-size: 1.1rem;
    color: var(--gold-primary);
    margin-bottom: 25px;
    font-weight: 600;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gold-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a::before {
    content: '›';
    color: var(--gold-primary);
    font-size: 1.2rem;
}

.footer-links a:hover {
    color: var(--gold-primary);
    padding-left: 5px;
}

.footer-qr {
    width: 120px;
    height: auto;
    border-radius: 8px;
    border: 2px solid var(--gold-primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s;
}

.footer-bottom-links a:hover {
    color: var(--gold-primary);
}

/* ===== 面包屑 ===== */
.breadcrumb {
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    padding: 120px 0 60px;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.breadcrumb::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
}

.breadcrumb h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
}

.breadcrumb-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 0.9rem;
    position: relative;
    opacity: 0.8;
}

.breadcrumb-nav a {
    color: var(--gold-primary);
    text-decoration: none;
}

.breadcrumb-nav span {
    color: rgba(255,255,255,0.5);
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--navy);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 14px 20px;
    border: 2px solid rgba(212, 168, 67, 0.2);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
    background: var(--white);
    color: var(--text-main);
}

.form-control:focus {
    outline: none;
    border-color: var(--gold-primary);
    box-shadow: 0 0 0 4px rgba(212, 168, 67, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 文章样式 ===== */
.article-content {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--text-main);
}

.article-content h2 {
    font-size: 1.8rem;
    color: var(--navy);
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gold-pale);
}

.article-content h3 {
    font-size: 1.4rem;
    color: var(--gold-dark);
    margin: 30px 0 15px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 30px 0;
    box-shadow: 0 10px 30px var(--shadow-dark);
}

.article-content a {
    color: var(--gold-dark);
    text-decoration: none;
    border-bottom: 1px dashed var(--gold-primary);
    transition: all 0.3s;
}

.article-content a:hover {
    color: var(--gold-primary);
    border-bottom-style: solid;
}

.article-content ul, .article-content ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 10px;
}

.article-content blockquote {
    border-left: 4px solid var(--gold-primary);
    padding: 20px 30px;
    background: var(--gold-pale);
    margin: 30px 0;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--text-secondary);
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 60px;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid rgba(212, 168, 67, 0.2);
    color: var(--text-main);
}

.pagination a:hover {
    background: var(--gold-primary);
    color: var(--white);
    border-color: var(--gold-primary);
}

.pagination .current {
    background: var(--gold-primary);
    color: var(--white);
    border-color: var(--gold-primary);
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 992px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .hero h2 { font-size: 2.5rem; }
    .section { padding: 70px 0; }
    .section-title { font-size: 2rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--navy);
        flex-direction: column;
        padding: 40px;
        transition: left 0.4s ease;
        gap: 25px;
    }
    .nav-menu.active { left: 0; }
    .mobile-toggle { display: flex; }
    .hero-meta { gap: 20px; }
    .hero-meta-item .number { font-size: 1.8rem; }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; gap: 30px; }
    .hero h2 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 300px; justify-content: center; }
    .section { padding: 50px 0; }
    .section-title { font-size: 1.6rem; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .breadcrumb h1 { font-size: 1.8rem; }
    .timeline { padding-left: 30px; }
    .container { padding: 0 20px; }
}

@media (max-width: 480px) {
    .hero h2 { font-size: 1.6rem; }
    .navbar-container { padding: 0 15px; height: 70px; }
    .logo-text h1 { font-size: 1rem; }
    .section { padding: 40px 0; }
}

/* ===== 特效类 ===== */
.glow-text {
    text-shadow: 0 0 20px rgba(212, 168, 67, 0.5);
}

.gold-border {
    border: 2px solid transparent;
    background: linear-gradient(var(--white), var(--white)) padding-box,
                linear-gradient(135deg, var(--gold-primary), var(--gold-light)) border-box;
}

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gold-pale);
    border-top-color: var(--gold-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 图片懒加载占位 */
.img-placeholder {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}