/* ============================================
   合肥品茶 - 黑金奢华主题样式表
   版本: 1.0
   描述: 极致黑金配色，现代扁平化与微交互结合
   ============================================ */

/* ---------- CSS 变量定义 ---------- */
:root {
    --gold-primary: #c9a84c;
    --gold-light: #e8d48b;
    --gold-dark: #a07c2a;
    --gold-gradient: linear-gradient(135deg, #e8d48b 0%, #c9a84c 50%, #a07c2a 100%);
    --black-primary: #0a0a0a;
    --black-secondary: #1a1a1a;
    --black-tertiary: #2a2a2a;
    --gray-dark: #333333;
    --gray-medium: #666666;
    --gray-light: #999999;
    --white-primary: #f5f5f5;
    --white-secondary: #e0e0e0;
    --font-primary: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --shadow-gold: 0 4px 20px rgba(201, 168, 76, 0.3);
    --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ---------- 全局重置 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--black-primary);
    color: var(--white-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--gold-primary);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--gold-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--black-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gold-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold-primary);
}

/* ---------- 通用容器 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--gray-light);
    font-size: 1.1rem;
}

.section-title .divider {
    width: 80px;
    height: 3px;
    background: var(--gold-gradient);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ---------- 头部导航 ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(201, 168, 76, 0.2);
    transition: all var(--transition-fast);
}

.header.scrolled {
    box-shadow: var(--shadow-dark);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo svg {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu a {
    padding: 10px 20px;
    color: var(--white-secondary);
    font-size: 0.95rem;
    border-radius: 6px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    transition: width var(--transition-fast);
    border-radius: 1px;
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 60%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--gold-primary);
    transition: all var(--transition-fast);
    border-radius: 1px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Banner 轮播 ---------- */
.banner {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.8) 100%);
    z-index: 1;
}

.banner-slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease;
}

.banner-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

.banner-content p {
    font-size: 1.3rem;
    color: var(--white-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.banner-btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--gold-gradient);
    color: var(--black-primary);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all var(--transition-fast);
    letter-spacing: 2px;
}

.banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
    color: var(--black-primary);
}

/* 轮播指示器 */
.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.banner-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(201, 168, 76, 0.3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.banner-dots .dot.active {
    background: var(--gold-primary);
    transform: scale(1.2);
}

/* ---------- 核心服务 ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--black-secondary);
    border: 1px solid rgba(201, 168, 76, 0.15);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(201, 168, 76, 0.4);
    box-shadow: var(--shadow-gold);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, rgba(201, 168, 76, 0.1) 0%, rgba(201, 168, 76, 0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--gold-primary);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ---------- 精选文章 ---------- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.article-card {
    background: var(--black-secondary);
    border: 1px solid rgba(201, 168, 76, 0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.article-card:hover {
    transform: translateY(-8px);
    border-color: rgba(201, 168, 76, 0.3);
    box-shadow: var(--shadow-gold);
}

.article-card-img {
    height: 220px;
    overflow: hidden;
}

.article-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.article-card:hover .article-card-img img {
    transform: scale(1.1);
}

.article-card-body {
    padding: 25px;
}

.article-card-body .category-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(201, 168, 76, 0.15);
    color: var(--gold-primary);
    font-size: 0.8rem;
    border-radius: 20px;
    margin-bottom: 12px;
}

.article-card-body h3 {
    font-size: 1.2rem;
    color: var(--white-primary);
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-body h3 a:hover {
    color: var(--gold-primary);
}

.article-card-body p {
    color: var(--gray-light);
    font-size: 0.9rem;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-footer {
    padding: 15px 25px;
    border-top: 1px solid rgba(201, 168, 76, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-light);
    font-size: 0.85rem;
}

/* ---------- 栏目页样式 ---------- */
.page-header {
    padding: 160px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, rgba(201, 168, 76, 0.05) 0%, transparent 100%);
    border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}

.page-header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.page-header p {
    color: var(--gray-light);
    font-size: 1.1rem;
}

.breadcrumb {
    padding: 20px 0;
    color: var(--gray-light);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--gold-primary);
}

.breadcrumb span {
    margin: 0 8px;
    color: var(--gray-medium);
}

/* 文章列表 */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.article-list-item {
    display: flex;
    gap: 30px;
    background: var(--black-secondary);
    border: 1px solid rgba(201, 168, 76, 0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.article-list-item:hover {
    border-color: rgba(201, 168, 76, 0.3);
    box-shadow: var(--shadow-gold);
}

.article-list-img {
    width: 300px;
    min-height: 220px;
    flex-shrink: 0;
    overflow: hidden;
}

.article-list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.article-list-item:hover .article-list-img img {
    transform: scale(1.05);
}

.article-list-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-list-content .category-tag {
    display: inline-block;
    width: fit-content;
    padding: 4px 12px;
    background: rgba(201, 168, 76, 0.15);
    color: var(--gold-primary);
    font-size: 0.8rem;
    border-radius: 20px;
    margin-bottom: 12px;
}

.article-list-content h3 {
    font-size: 1.4rem;
    color: var(--white-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-list-content h3 a:hover {
    color: var(--gold-primary);
}

.article-list-content p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.read-more {
    display: inline-block;
    color: var(--gold-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

.read-more:hover {
    color: var(--gold-light);
}

.read-more::after {
    content: ' →';
    transition: transform var(--transition-fast);
    display: inline-block;
}

/* ---------- 文章详情页 ---------- */
.article-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 140px 20px 80px;
}

.article-detail-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(201, 168, 76, 0.15);
}

.article-detail-header .category-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(201, 168, 76, 0.15);
    color: var(--gold-primary);
    font-size: 0.85rem;
    border-radius: 20px;
    margin-bottom: 20px;
}

.article-detail-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--white-primary);
    line-height: 1.4;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    gap: 30px;
    color: var(--gray-light);
    font-size: 0.9rem;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-cover {
    margin-bottom: 40px;
    border-radius: 16px;
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
}

.article-body {
    color: var(--white-secondary);
    line-height: 2;
    font-size: 1.05rem;
}

.article-body h2 {
    font-size: 1.8rem;
    color: var(--gold-primary);
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(201, 168, 76, 0.15);
}

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

.article-body p {
    margin-bottom: 20px;
    text-align: justify;
}

.article-body img {
    margin: 30px 0;
    border-radius: 12px;
    border: 1px solid rgba(201, 168, 76, 0.1);
}

.article-body ul, .article-body ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-body li {
    margin-bottom: 10px;
    list-style: disc;
}

.article-body ol li {
    list-style: decimal;
}

.article-body blockquote {
    margin: 30px 0;
    padding: 20px 30px;
    background: rgba(201, 168, 76, 0.05);
    border-left: 4px solid var(--gold-primary);
    border-radius: 0 8px 8px 0;
    color: var(--gold-light);
    font-style: italic;
}

/* 文章导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(201, 168, 76, 0.15);
}

.article-nav a {
    padding: 15px 25px;
    background: var(--black-secondary);
    border: 1px solid rgba(201, 168, 76, 0.15);
    border-radius: 10px;
    color: var(--gold-primary);
    transition: all var(--transition-fast);
}

.article-nav a:hover {
    border-color: var(--gold-primary);
    box-shadow: var(--shadow-gold);
}

/* ---------- 联系我们页面 ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.contact-info-card {
    background: var(--black-secondary);
    border: 1px solid rgba(201, 168, 76, 0.15);
    border-radius: 16px;
    padding: 40px;
}

.contact-info-card h3 {
    font-size: 1.5rem;
    color: var(--gold-primary);
    margin-bottom: 25px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(201, 168, 76, 0.08);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: rgba(201, 168, 76, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-item-text {
    color: var(--white-secondary);
}

.contact-item-text .label {
    font-size: 0.85rem;
    color: var(--gray-light);
    margin-bottom: 4px;
}

.contact-item-text .value {
    font-size: 1.1rem;
    color: var(--gold-primary);
}

/* ---------- 悬浮联系栏 ---------- */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-end;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    font-size: 1.3rem;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-dark);
    position: relative;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.floating-btn.phone {
    background: linear-gradient(135deg, #4CAF50, #2E7D32);
    color: white;
}

.floating-btn.copy-phone {
    background: linear-gradient(135deg, #2196F3, #1565C0);
    color: white;
}

.floating-btn.copy-wechat {
    background: linear-gradient(135deg, #07C160, #06AD4F);
    color: white;
}

.floating-btn.copy-qq {
    background: linear-gradient(135deg, #4285F4, #1A73E8);
    color: white;
}

.floating-btn.qq-add {
    background: linear-gradient(135deg, #FF9800, #F57C00);
    color: white;
}

.floating-btn .tooltip {
    position: absolute;
    right: 70px;
    background: var(--black-tertiary);
    color: var(--white-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-fast);
    border: 1px solid rgba(201, 168, 76, 0.2);
}

.floating-btn:hover .tooltip {
    opacity: 1;
    transform: translateX(-5px);
}

/* 主悬浮按钮 */
.floating-main {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gold-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    font-size: 1.5rem;
    color: var(--black-primary);
    box-shadow: var(--shadow-gold);
    transition: all var(--transition-fast);
    animation: pulse 2s infinite;
}

.floating-main:hover {
    transform: scale(1.1);
}

.floating-main.active {
    animation: none;
}

.floating-main .tooltip {
    position: absolute;
    right: 78px;
    background: var(--black-tertiary);
    color: var(--gold-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-fast);
    border: 1px solid rgba(201, 168, 76, 0.2);
}

.floating-main:hover .tooltip {
    opacity: 1;
    transform: translateX(-5px);
}

/* 悬浮按钮展开/收起 */
.floating-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all var(--transition-fast);
}

.floating-buttons.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

/* ---------- Toast 提示 ---------- */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--black-tertiary);
    color: var(--gold-primary);
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 0.95rem;
    z-index: 10000;
    opacity: 0;
    transition: all var(--transition-fast);
    border: 1px solid rgba(201, 168, 76, 0.3);
    box-shadow: var(--shadow-gold);
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- 页脚 ---------- */
.footer {
    background: var(--black-secondary);
    border-top: 1px solid rgba(201, 168, 76, 0.15);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    font-size: 1.8rem;
    margin-bottom: 15px;
    display: block;
}

.footer-brand p {
    color: var(--gray-light);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-col h4 {
    color: var(--gold-primary);
    font-size: 1.1rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gold-gradient);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--gray-light);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(201, 168, 76, 0.1);
    color: var(--gray-medium);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--gold-dark);
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(201, 168, 76, 0.4);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(201, 168, 76, 0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 滚动动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .header .container {
        height: 70px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--black-secondary);
        flex-direction: column;
        padding: 100px 30px 30px;
        gap: 5px;
        transition: right var(--transition-fast);
        border-left: 1px solid rgba(201, 168, 76, 0.2);
        z-index: 1001;
    }

    /* 移动端菜单遮罩层 */
    .menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.6);
        z-index: 1000;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-fast);
    }

    .menu-overlay.active {
        opacity: 1;
        pointer-events: all;
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-menu a {
        width: 100%;
        padding: 15px 20px;
    }

    .menu-toggle {
        display: flex;
    }

    .banner-content h1 {
        font-size: 2.2rem;
    }

    .banner-content p {
        font-size: 1rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .article-list-item {
        flex-direction: column;
    }

    .article-list-img {
        width: 100%;
        height: 200px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        padding-bottom: 90px;
    }

    .floating-contact {
        bottom: 20px;
        right: 15px;
    }

    .floating-btn {
        width: 48px;
        height: 48px;
        font-size: 1.1rem;
    }

    .floating-main {
        width: 56px;
        height: 56px;
        font-size: 1.3rem;
    }

    .floating-btn .tooltip {
        display: none;
    }

    .floating-buttons {
        max-height: 60vh;
        overflow-y: auto;
        align-items: center;
    }

    .article-detail {
        padding: 110px 15px 100px;
    }

    .article-detail-header h1 {
        font-size: 1.6rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .banner-content h1 {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }

    .banner-btn {
        padding: 12px 30px;
        font-size: 1rem;
    }

    .article-meta {
        flex-wrap: wrap;
        gap: 15px;
    }
}