/* ============================================
   沙特吉达国际建材及装饰展览会 - 香槟金主题样式
   ============================================ */

:root {
    --champagne-gold: #D4AF37;
    --champagne-light: #F4E4BC;
    --champagne-dark: #AA8C2C;
    --black: #1A1A1A;
    --dark-bg: #0F0F0F;
    --light-bg: #FAF7F0;
    --text-light: #FFFFFF;
    --text-dark: #2C2C2C;
    --accent: #C5A028;
    --gradient-gold: linear-gradient(135deg, #D4AF37 0%, #F4E4BC 50%, #AA8C2C 100%);
    --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);
    --shadow-dark: 0 10px 40px rgba(0, 0, 0, 0.5);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--champagne-gold); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--champagne-dark); }

/* 导航 */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--champagne-gold);
    transition: all 0.4s ease;
}
.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo { display: flex; align-items: center; gap: 15px; }
.logo img { height: 50px; filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.5)); }
.logo-text {
    color: var(--champagne-gold);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.nav-menu { display: flex; list-style: none; gap: 0; }
.nav-menu li { position: relative; }
.nav-menu a {
    display: block;
    padding: 0 25px;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    line-height: 80px;
}
.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--gradient-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.nav-menu a:hover::before, .nav-menu a.active::before { width: 80%; }
.nav-menu a:hover, .nav-menu a.active {
    color: var(--champagne-gold);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(26, 26, 26, 0.98);
    min-width: 250px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    border-top: 2px solid var(--champagne-gold);
    box-shadow: var(--shadow-dark);
}
.nav-menu li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { padding: 15px 25px; line-height: 1.5; border-bottom: 1px solid rgba(212, 175, 55, 0.1); }
.dropdown a:hover { background: rgba(212, 175, 55, 0.1); padding-left: 30px; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}
.mobile-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background: var(--champagne-gold);
    transition: all 0.3s ease;
}

/* 英雄区域 */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--dark-bg);
}
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/2_Jeddah_International_Exhibition_Convention.png') center/cover;
    opacity: 0.4;
}
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15,15,15,0.9) 0%, rgba(212,175,55,0.2) 50%, rgba(15,15,15,0.9) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}
.hero-badge {
    display: inline-block;
    padding: 10px 30px;
    background: rgba(212, 175, 55, 0.2);
    border: 1px solid var(--champagne-gold);
    color: var(--champagne-gold);
    font-size: 0.9rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 30px;
    animation: fadeInDown 1s ease;
}
.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.2;
    animation: fadeInUp 1s ease 0.3s both;
}
.hero-title span {
    color: var(--champagne-gold);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
}
.hero-subtitle {
    font-size: 1.3rem;
    color: var(--champagne-light);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.6s both;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.9s both;
}
.stat-item { text-align: center; }
.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--champagne-gold);
    display: block;
}
.stat-label {
    font-size: 0.9rem;
    color: var(--champagne-light);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 1.2s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.4s ease;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: var(--gradient-gold);
    color: var(--black);
    box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.5);
}
.btn-outline {
    background: transparent;
    color: var(--champagne-gold);
    border: 2px solid var(--champagne-gold);
}
.btn-outline:hover {
    background: var(--champagne-gold);
    color: var(--black);
    transform: translateY(-3px);
}

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}
.section-label {
    display: inline-block;
    padding: 8px 25px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--champagne-gold);
    color: var(--champagne-gold);
    font-size: 0.85rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}
.section-title.light { color: var(--text-light); }
.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}
.section-subtitle.light { color: var(--champagne-light); }

/* 卡片 */
.card {
    background: var(--text-light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.4s ease;
    border: 1px solid rgba(212, 175, 55, 0.1);
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-gold);
    border-color: var(--champagne-gold);
}
.card-image {
    position: relative;
    overflow: hidden;
    height: 220px;
}
.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.card:hover .card-image img { transform: scale(1.1); }
.card-content { padding: 25px; }
.card-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: #888;
}
.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.4;
}
.card-title a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
.card-title a:hover { color: var(--champagne-gold); }
.card-excerpt {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--champagne-gold);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap 0.3s ease;
}
.card-link:hover { gap: 15px; }

/* 文章列表 */
.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

/* 关于沙特展会 */
.about-section { padding: 100px 0; background: var(--light-bg); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}
.about-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-dark);
}
.about-image img { width: 100%; height: auto; display: block; }
.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100px;
    height: 100px;
    border-top: 4px solid var(--champagne-gold);
    border-left: 4px solid var(--champagne-gold);
}
.about-image::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    border-bottom: 4px solid var(--champagne-gold);
    border-right: 4px solid var(--champagne-gold);
}
.about-content h3 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}
.about-content p {
    font-size: 1.05rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}
.feature-item { display: flex; align-items: flex-start; gap: 15px; }
.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--black);
    font-size: 1.3rem;
    flex-shrink: 0;
}
.feature-text h4 { font-size: 1.1rem; color: var(--text-dark); margin-bottom: 5px; }
.feature-text p { font-size: 0.9rem; color: #777; margin: 0; }

/* 数据展示 */
.stats-section {
    padding: 80px 0;
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/pattern.png') center/300px;
    opacity: 0.05;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}
.stat-box {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 15px;
    transition: all 0.4s ease;
}
.stat-box:hover {
    background: rgba(212, 175, 55, 0.1);
    border-color: var(--champagne-gold);
    transform: translateY(-5px);
}
.stat-box .number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--champagne-gold);
    display: block;
    margin-bottom: 10px;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}
.stat-box .label {
    font-size: 1rem;
    color: var(--champagne-light);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 展品范围 */
.products-section { padding: 100px 0; background: var(--light-bg); }
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}
.product-card {
    background: var(--text-light);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card:hover { box-shadow: var(--shadow-gold); transform: translateY(-5px); }
.product-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: var(--black);
    box-shadow: var(--shadow-gold);
}
.product-card h3 { font-size: 1.3rem; color: var(--text-dark); margin-bottom: 15px; }
.product-card p { font-size: 0.95rem; color: #666; line-height: 1.7; }

/* 联系表单 */
.contact-section {
    padding: 100px 0;
    background: var(--dark-bg);
    position: relative;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    align-items: start;
}
.contact-info h3 { font-size: 2rem; color: var(--text-light); margin-bottom: 30px; }
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
}
.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--champagne-gold);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--champagne-gold);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.contact-text h4 { font-size: 1.1rem; color: var(--champagne-gold); margin-bottom: 5px; }
.contact-text p, .contact-text a {
    font-size: 1rem;
    color: var(--champagne-light);
    text-decoration: none;
    transition: color 0.3s ease;
}
.contact-text a:hover { color: var(--champagne-gold); }
.contact-form {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
    padding: 40px;
}
.form-group { margin-bottom: 25px; }
.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--champagne-light);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 15px 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 10px;
    color: var(--text-light);
    font-size: 1rem;
    transition: all 0.3s ease;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--champagne-gold);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
}
.form-group textarea { min-height: 120px; resize: vertical; }

/* 页脚 */
.footer {
    background: var(--black);
    border-top: 3px solid var(--champagne-gold);
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    margin-bottom: 40px;
}
.footer-brand img { height: 50px; margin-bottom: 20px; }
.footer-brand p { font-size: 0.95rem; color: #888; line-height: 1.8; margin-bottom: 20px; }
.footer-title {
    font-size: 1.1rem;
    color: var(--champagne-gold);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a {
    color: #888;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-links a:hover { color: var(--champagne-gold); padding-left: 5px; }
.footer-bottom {
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    padding-top: 30px;
    text-align: center;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}
.footer-bottom p { font-size: 0.85rem; color: #666; }
.footer-bottom a { color: var(--champagne-gold); text-decoration: none; }

/* 文章详情 */
.article-header {
    padding: 150px 0 80px;
    background: var(--dark-bg);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.article-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-gold);
    opacity: 0.05;
}
.article-title {
    font-size: 2.5rem;
    color: var(--text-light);
    max-width: 900px;
    margin: 0 auto 30px;
    position: relative;
    z-index: 1;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: var(--champagne-light);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}
.article-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-dark);
}
.article-content h2, .article-content h3 { color: var(--text-dark); margin: 40px 0 20px; }
.article-content p { margin-bottom: 20px; }
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 30px 0;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}
.article-content strong { color: var(--champagne-dark); }

/* 面包屑 */
.breadcrumb {
    background: rgba(15, 15, 15, 0.95);
    padding: 15px 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}
.breadcrumb-container { max-width: 1400px; margin: 0 auto; padding: 0 20px; }
.breadcrumb a {
    color: var(--champagne-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}
.breadcrumb a:hover { color: var(--champagne-gold); }
.breadcrumb span { color: #666; margin: 0 10px; }
.breadcrumb .current { color: var(--champagne-gold); }

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}
.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: var(--text-light);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 10px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}
.pagination a:hover, .pagination a.active {
    background: var(--gradient-gold);
    color: var(--black);
    border-color: var(--champagne-gold);
}

/* 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); }
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--black);
    text-decoration: none;
    font-size: 1.2rem;
    box-shadow: var(--shadow-gold);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.5);
}

/* 分类标签 */
.category-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--champagne-gold);
    border-radius: 20px;
    color: var(--champagne-gold);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

/* 成功页面 */
.thanks-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg);
    text-align: center;
    padding: 20px;
}
.thanks-content { max-width: 600px; }
.thanks-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 3rem;
    color: var(--black);
    box-shadow: var(--shadow-gold);
    animation: scaleIn 0.5s ease;
}
@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}
.thanks-content h1 { font-size: 2.5rem; color: var(--text-light); margin-bottom: 20px; }
.thanks-content p { font-size: 1.1rem; color: var(--champagne-light); margin-bottom: 30px; }

/* 响应式 */
@media (max-width: 1200px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 992px) {
    .hero-title { font-size: 2.5rem; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(15, 15, 15, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateX(-100%);
        transition: transform 0.4s ease;
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    .nav-menu.active { transform: translateX(0); }
    .nav-menu a { line-height: 50px; border-bottom: 1px solid rgba(212, 175, 55, 0.1); }
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        background: rgba(26, 26, 26, 0.5);
        border: none;
    }
    .nav-menu li:hover .dropdown, .nav-menu li.active .dropdown { display: block; }
    .mobile-toggle { display: flex; }
}
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .hero-stats { flex-direction: column; gap: 20px; }
    .hero-cta { flex-direction: column; align-items: center; }
    .products-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .article-list { grid-template-columns: 1fr; }
    .article-title { font-size: 1.8rem; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 1.5rem; }
    .section-title { font-size: 1.8rem; }
    .btn { padding: 12px 25px; font-size: 0.9rem; }
}