/* style.css - MK中国官网 */
/* 全局重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6C4F3E;
    --primary-light: #A0816E;
    --primary-dark: #4A3428;
    --accent: #D4A853;
    --accent-light: #E8C97A;
    --bg: #F8F5F0;
    --bg-card: rgba(255,255,255,0.85);
    --bg-glass: rgba(255,255,255,0.25);
    --text: #2C2418;
    --text-light: #6B5E4F;
    --border: rgba(108,79,62,0.15);
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --radius: 20px;
    --radius-sm: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --primary: #D4A853;
    --primary-light: #E8C97A;
    --primary-dark: #B8923A;
    --accent: #6C4F3E;
    --accent-light: #A0816E;
    --bg: #1A1512;
    --bg-card: rgba(42,35,30,0.85);
    --bg-glass: rgba(42,35,30,0.4);
    --text: #F0EBE0;
    --text-light: #B8A99A;
    --border: rgba(212,168,83,0.2);
    --shadow: 0 8px 32px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background var(--transition), color var(--transition);
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--accent);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 滚动动画基类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Header ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 24px;
}

nav ul li a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 4px 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

.search-box form {
    display: flex;
    gap: 0;
    background: var(--bg-card);
    border-radius: 50px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.search-box form:focus-within {
    box-shadow: 0 0 0 3px rgba(212,168,83,0.3);
}

.search-box input {
    border: none;
    background: transparent;
    padding: 8px 16px;
    font-size: 0.9rem;
    color: var(--text);
    outline: none;
    min-width: 160px;
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-box button {
    border: none;
    background: var(--primary);
    color: #fff;
    padding: 8px 16px;
    cursor: pointer;
    font-weight: 500;
    transition: background var(--transition);
}

.search-box button:hover {
    background: var(--accent);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 20px 0 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.breadcrumb ul {
    list-style: none;
    display: flex;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.breadcrumb ul li:not(:last-child)::after {
    content: '/';
    margin-left: 8px;
    color: var(--border);
}

.breadcrumb ul li a {
    color: var(--text-light);
}
.breadcrumb ul li a:hover {
    color: var(--primary);
}

/* ===== Hero Banner ===== */
.hero-banner {
    margin-top: 80px;
    background: linear-gradient(135deg, #F5EDE0 0%, #E8D5C0 30%, #DCC4B0 60%, #C9B09B 100%);
    border-radius: 0 0 40px 40px;
    padding: 80px 20px;
    position: relative;
    overflow: hidden;
}

body.dark-mode .hero-banner {
    background: linear-gradient(135deg, #2C2418 0%, #3D3224 30%, #4A3D2E 60%, #5C4D3A 100%);
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(212,168,83,0.15) 0%, transparent 60%),
                radial-gradient(circle at 70% 60%, rgba(108,79,62,0.1) 0%, transparent 50%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-20px, -20px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-dark), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark-mode .hero-content h1 {
    background: linear-gradient(135deg, var(--accent), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(108,79,62,0.3);
}
.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212,168,83,0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}
.btn-secondary:hover {
    border-color: var(--primary);
    background: var(--bg-card);
    transform: translateY(-2px);
}

.hero-content img {
    margin: 40px auto 0;
    max-width: 400px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform var(--transition);
}
.hero-content img:hover {
    transform: scale(1.02);
}

/* ===== 通用 Section ===== */
section {
    padding: 60px 0;
}

section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 12px auto 0;
    border-radius: 2px;
}

/* ===== Brand Intro ===== */
.brand-intro {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius);
    margin: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.brand-intro .container {
    max-width: 800px;
    text-align: center;
}

.brand-intro p {
    margin-bottom: 20px;
    color: var(--text-light);
    font-size: 1.05rem;
}

.brand-intro img {
    margin: 30px auto 0;
    max-width: 300px;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

/* ===== Products ===== */
.products {
    background: var(--bg);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.product-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
    cursor: default;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
    border-color: var(--accent);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    margin-bottom: 16px;
    border-radius: var(--radius-sm);
    background: #f9f6f0;
}

.product-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text);
}

.product-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Services ===== */
.services {
    background: linear-gradient(135deg, #F0E8DD 0%, #E5D9CE 100%);
}

body.dark-mode .services {
    background: linear-gradient(135deg, #2A221C 0%, #1E1814 100%);
}

.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.service-item {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.service-item:hover {
    transform: scale(1.02);
    background: var(--bg-card);
}

.service-item h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--text);
}

.service-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Advantages ===== */
.advantages {
    background: var(--bg);
}

.advantages ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.advantages ul li {
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--accent);
    font-weight: 500;
    transition: all var(--transition);
}

.advantages ul li:hover {
    transform: translateX(6px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.advantages p {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 20px auto 0;
}

/* ===== Cases ===== */
.cases {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    margin: 20px;
    padding: 40px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.case-card {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
    transition: all var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.case-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.case-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== News ===== */
.news {
    background: var(--bg);
}

.news article {
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-sm);
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.news article:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.news article h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text);
}

.news article p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Latest Articles ===== */
.latest-articles {
    background: linear-gradient(135deg, #F5F0EA 0%, #EDE5DB 100%);
}

body.dark-mode .latest-articles {
    background: linear-gradient(135deg, #2A221C 0%, #1E1814 100%);
}

.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.article-list article {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.article-list article:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.article-list article h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text);
}

.article-list article p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ===== Hot Recommend ===== */
.hot-recommend {
    background: var(--bg);
}

.recommend-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.recommend-item {
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.recommend-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow);
}

.recommend-item img {
    width: 100%;
    height: 160px;
    object-fit: contain;
    margin-bottom: 12px;
}

.recommend-item p {
    font-weight: 600;
    color: var(--text);
}

/* ===== FAQ ===== */
.faq {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    margin: 20px;
    padding: 40px;
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-item {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 20px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.faq-item:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text);
    font-weight: 600;
}

.faq-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== HowTo ===== */
.howto {
    background: linear-gradient(135deg, #EDE5DB 0%, #E0D6CA 100%);
}

body.dark-mode .howto {
    background: linear-gradient(135deg, #2A221C 0%, #1E1814 100%);
}

.howto ol {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 24px;
}

.howto ol li {
    padding: 10px 0;
    font-size: 1rem;
    color: var(--text);
    line-height: 1.7;
}

.howto p {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
}

/* ===== Contact ===== */
.contact {
    background: var(--bg);
}

.contact form {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact label {
    font-weight: 500;
    color: var(--text);
}

.contact input,
.contact textarea {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text);
    font-size: 1rem;
    transition: all var(--transition);
    outline: none;
}

.contact input:focus,
.contact textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212,168,83,0.2);
}

.contact textarea {
    resize: vertical;
}

.contact button {
    padding: 14px 32px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
}

.contact button:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.contact p {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
}

/* ===== Author, Team, Company ===== */
.author, .team, .company {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    margin: 0 20px;
    border-radius: var(--radius-sm);
}

.author p, .team p, .company p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-light);
    font-size: 1rem;
}

/* ===== Update Info ===== */
.update-info {
    text-align: center;
    padding: 20px;
    color: var(--text-light);
    font-size: 0.85rem;
}

/* ===== Aside ===== */
aside {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    margin: 20px;
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

aside h2 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    text-align: center;
}

aside ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

aside ul li a {
    color: var(--text-light);
    font-size: 0.95rem;
    padding: 6px 12px;
    border-radius: 20px;
    background: var(--bg);
    transition: all var(--transition);
}

aside ul li a:hover {
    background: var(--accent);
    color: #fff;
}

/* ===== Footer ===== */
footer {
    background: var(--primary-dark);
    color: #f0e8dd;
    padding: 40px 20px 20px;
}

body.dark-mode footer {
    background: #0f0c0a;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.footer-links h3,
.footer-qrcode h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--accent);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links ul li a {
    color: #d4c8b8;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links ul li a:hover {
    color: var(--accent);
}

.footer-qrcode {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-qrcode img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    border: 2px solid rgba(255,255,255,0.1);
}

.footer-icp {
    text-align: center;
    grid-column: 1 / -1;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-icp p {
    font-size: 0.85rem;
    color: #b8a99a;
    margin-bottom: 4px;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: all var(--transition);
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(212,168,83,0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-glass);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        transform: translateY(-120%);
        transition: transform var(--transition);
        border-bottom: 1px solid var(--border);
    }

    nav.active {
        transform: translateY(0);
    }

    nav ul {
        flex-direction: column;
        gap: 12px;
    }

    .search-box form {
        width: 100%;
    }

    .search-box input {
        min-width: 0;
        flex: 1;
    }

    .hero-banner {
        padding: 60px 16px;
        margin-top: 64px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    section {
        padding: 40px 0;
    }

    section h2 {
        font-size: 1.5rem;
    }

    .brand-intro,
    .cases,
    .faq,
    .author,
    .team,
    .company,
    aside {
        margin: 12px;
        padding: 24px;
    }

    .product-grid,
    .service-list,
    .case-grid,
    .article-list,
    .recommend-grid {
        grid-template-columns: 1fr;
    }

    .advantages ul {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-qrcode {
        align-items: center;
    }

    .footer-links ul {
        align-items: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content img {
        max-width: 280px;
    }

    section h2 {
        font-size: 1.3rem;
    }

    .contact form {
        max-width: 100%;
    }
}