/**
 * 沁园汝瓷 - 公共样式
 * 所有页面共用的基础样式，使用全局CSS变量
 */

/* ==================== 基础重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: var(--font-family);
}

body {
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background-color: #FDFBF8;
    line-height: var(--line-height-base);
}

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ==================== 页面横幅 ==================== */
.page-banner {
    background: linear-gradient(135deg, #3a3a3a 0%, #1a1a1a 100%);
    color: #fff;
    /* padding: 60px 0; */
    text-align: center;
}

.page-banner h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-light);
    letter-spacing: var(--letter-spacing-lg);
    margin-bottom: 15px;
}

.breadcrumb {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
}

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

.breadcrumb span {
    margin: 0 8px;
}

/* ==================== 通用区块标题 ==================== */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-5xl);
}

.section-title h2 {
    font-size: var(--font-size-5xl);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-light);
    letter-spacing: var(--letter-spacing-lg);
    margin-bottom: 10px;
}

.section-title .sub-title {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-sm);
}

.section-title .divider {
    width: 60px;
    height: 2px;
    background-color: var(--color-primary);
    margin: 15px auto 0;
}

/* ==================== 内容区块 ==================== */
.content-section {
    padding: var(--section-padding);
}

.content-section.bg-gray {
    background-color: var(--color-bg-gray);
}

.content-section.bg-gradient {
    background: var(--color-bg-gradient-card);
}

/* ==================== 区块标题头部（带更多链接） ==================== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.section-header .more-link {
    font-size: var(--font-size-md);
    color: var(--color-primary-light);
    border-bottom: 1px solid var(--color-primary-light);
    padding-bottom: 2px;
    transition: all var(--transition-fast);
}

.section-header .more-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-block;
    padding: 12px 36px;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    font-size: var(--font-size-md);
    letter-spacing: var(--letter-spacing-sm);
    border-radius: 25px;
    transition: all var(--transition-fast);
    cursor: pointer;
    background: transparent;
}

.btn:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* ==================== 分页样式 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid #ddd;
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

.pagination .active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 30px;
    width: 44px;
    height: 44px;
    background-color: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ==================== 头部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    backdrop-filter: none;
    box-shadow: none;
    transition: all var(--transition-fast);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    transition: all var(--transition-fast);
}

.header.scrolled .header-inner {
    /* 滚动后保持相同高度 */
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 62px;
}

.logo-img {
    height: 62px;
    object-fit: cover;
}

.header.scrolled .logo-img {
    color: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-sm);
    transition: color var(--transition-fast);
}

.header.scrolled .logo-text {
    color: var(--color-primary);
}

/* 汉堡菜单按钮 */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-list {
    display: flex;
    gap: 5px;
}

.nav-link {
    display: block;
    padding: 8px 15px;
    font-size: 16px;
    color: var(--color-primary);
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-medium);
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background-color: var(--color-primary);
}

.header.scrolled .nav-link {
    color: var(--color-text-primary);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
    color: var(--color-primary);
    background-color: rgba(66, 147, 157, 0.08);
}

.nav-link-highlight {
    /* 移除默认高亮样式，仅保留选中时高亮 */
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.header.scrolled .search-btn {
    color: var(--color-text-secondary);
}

.header.scrolled .search-btn:hover {
    background-color: rgba(66, 147, 157, 0.08);
    color: var(--color-primary);
}

/* ==================== Footer ==================== */
.footer {
    background-color: var(--color-primary);
    color: #fff;
    padding: 60px 0 30px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-md);
    margin-bottom: 15px;
    color: #fff;
}

.footer-desc {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-base);
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    color: #fff;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.social-icon img {
    width: 20px;
    height: 20px;
}

.footer-links {
    display: flex;
    justify-content: space-around;
}

.footer-column h4 {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-lg);
    margin-bottom: 20px;
    color: #fff;
    font-weight: var(--font-weight-semibold);
}

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

.footer-column ul li a {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
    text-decoration: none;
}

.footer-column ul li a:hover {
    color: #fff;
}

.footer-contact h4 {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-lg);
    margin-bottom: 20px;
    color: #fff;
    font-weight: var(--font-weight-semibold);
}

.footer-contact p {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 12px;
    line-height: var(--line-height-base);
}

.footer-bottom {
    padding-top: 25px;
    text-align: center;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ==================== 通用页脚样式（contact-footer 全站统一） ==================== */
.contact-footer {
    background-color: var(--color-primary);
    color: #fff;
    padding: 60px 0 30px;
}

.contact-footer .footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-footer .footer-title {
    font-family: var(--font-family-serif);
    font-size: 20px;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 12px;
    color: #fff;
}

.contact-footer .footer-divider {
    width: 30px;
    height: 2px;
    background-color: #fff;
    margin-bottom: 20px;
}

.contact-footer .footer-column p {
    font-family: var(--font-family-sans);
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 12px;
    line-height: var(--line-height-base);
}

.contact-footer .footer-nav-col .nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-footer .footer-nav-col .nav-grid li a {
    font-family: var(--font-family-sans);
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
    text-decoration: none;
}

.contact-footer .footer-nav-col .nav-grid li a:hover {
    color: #fff;
}

.contact-footer .footer-brand-col {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.contact-footer .footer-logo-wrapper {
    margin-bottom: 15px;
}

.contact-footer .footer-logo-img {
    height: 60px;
    object-fit: contain;
}

.contact-footer .footer-slogan {
    font-family: var(--font-family-sans);
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.contact-footer .footer-social {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.contact-footer .social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
    height: auto;
    background-color: transparent;
    border-radius: 0;
    color: #fff;
    transition: all var(--transition-fast);
}

.contact-footer .social-icon img {
    width: auto;
    height: 24px;
    object-fit: contain;
}

.contact-footer .social-icon .icon-sm {
    height: 20px;
    width: auto;
}

.contact-footer .social-icon:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

.contact-footer .footer-platforms {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.contact-footer .footer-bottom {
    padding-top: 25px;
    text-align: center;
    font-family: var(--font-family-sans);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.contact-footer .footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.contact-footer .footer-bottom a:hover {
    color: #fff;
}

.footer-brand h4,
.footer-links-col h4,
.footer-brand-right h4 {
    font-size: 16px;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 20px;
    color: #fff;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 2;
    margin-bottom: 0;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.footer-links-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links-col ul li a:hover {
    color: #fff;
}

.footer-brand-right {
    text-align: right;
}

.footer-logo-img {
    height: 50px;
    margin-bottom: 15px;
}

.footer-slogan {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.footer-platforms {
    display: flex;
    gap: 20px;
    justify-content: flex-end;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

/* ==================== 响应式 ==================== */
@media (max-width: 992px) {
    .page-banner h1 {
        font-size: var(--font-size-4xl);
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }

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

    .contact-footer .footer-brand-col {
        grid-column: 1 / -1;
        align-items: center;
    }

    .footer-brand-right {
        text-align: left;
    }

    .footer-social {
        justify-content: flex-start;
    }

    .footer-platforms {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .page-banner {
        padding: 80px 0 50px;
    }

    .page-banner h1 {
        font-size: var(--font-size-3xl);
    }

    /* 显示汉堡菜单 */
    .hamburger {
        display: flex;
    }

    /* 移动端导航 */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-bg-primary);
        padding: 80px 20px 30px;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        z-index: 999;
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        padding: 15px 20px;
        font-size: var(--font-size-base);
        color: var(--color-text-primary);
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--color-primary);
        background-color: rgba(66, 147, 157, 0.05);
    }

    /* 遮罩层 */
    body.nav-open::before {
        content: '';
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }

    .contact-footer .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-footer .footer-brand-col {
        align-items: center;
    }

    .contact-footer .container {
        padding-left: 30px;
        padding-right: 30px;
    }
}

@media (max-width: 480px) {
    .page-banner {
        padding: 70px 0 40px;
    }

    .page-banner h1 {
        font-size: var(--font-size-2xl);
        letter-spacing: var(--letter-spacing-sm);
    }

    .breadcrumb {
        font-size: 10px;
    }

    .section-title h2 {
        font-size: var(--font-size-3xl);
        letter-spacing: var(--letter-spacing-sm);
    }

    .content-section {
        padding: 60px 0;
    }

    .btn {
        padding: 10px 24px;
        font-size: var(--font-size-sm);
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }

    .footer {
        padding: 40px 0 20px;
    }

    .footer-logo {
        font-size: var(--font-size-xl);
    }

    .footer-desc {
        font-size: var(--font-size-sm);
    }

    .footer-column h4,
    .footer-contact h4 {
        font-size: var(--font-size-base);
    }

    .footer-column ul li a,
    .footer-contact p {
        font-size: var(--font-size-sm);
    }

    .footer-brand h4,
    .footer-links-col h4,
    .footer-brand-right h4 {
        font-size: 14px;
    }

    .footer-brand p,
    .footer-links-col ul li a,
    .footer-slogan {
        font-size: 13px;
    }

    .footer-bottom {
        font-size: 12px;
    }

    .contact-footer .container {
        padding-left: 20px;
        padding-right: 20px;
    }
}

@media (max-width: 320px) {
    .contact-footer .container {
        padding-left: 15px;
        padding-right: 15px;
    }
}

/* 微信二维码弹窗 */
.qr-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}
.qr-modal-overlay.active {
    display: flex;
}
.qr-modal {
    position: relative;
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    max-width: 360px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}
.qr-modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    line-height: 1;
}
.qr-modal-close:hover {
    color: #333;
}
.qr-modal-img {
    width: 280px;
    height: 280px;
    object-fit: contain;
}
.qr-modal-tip {
    margin-top: 16px;
    font-size: 16px;
    color: var(--color-text-primary);
}