/* ===== 基础样式重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c9a962;
    --primary-dark: #b8954d;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-dark: #0a0a0a;
    --bg-light: #f8f8f8;
    --white: #ffffff;
    --border-color: #e5e5e5;
    --transition: all 0.3s ease;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .logo {
    color: var(--text-dark);
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    padding: 0.5rem 0;
}

.navbar.scrolled .nav-link {
    color: var(--text-light);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
    color: var(--text-dark);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--text-dark);
}

/* ===== 英雄区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(201, 169, 98, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(201, 169, 98, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 0 2rem;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    color: var(--white);
}

.title-line.accent {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(201, 169, 98, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--text-dark);
    border-color: var(--white);
}

.hero-scroll {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.5; transform: scaleY(0.8); }
}

/* ===== 通用区块样式 ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-color);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 作品集区域 ===== */
.portfolio {
    padding: 8rem 2rem;
    background: var(--bg-light);
}

.filter-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-light);
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--text-dark);
    color: var(--white);
    border-color: var(--text-dark);
}

.portfolio-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.portfolio-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
    transition: var(--transition);
}

.portfolio-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.item-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-product {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.product-icon {
    font-size: 4rem;
}

.portfolio-item.large .product-icon {
    font-size: 6rem;
}

.item-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .item-overlay {
    opacity: 1;
}

.item-overlay h3 {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.item-overlay p {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    transform: translateY(20px);
    transition: var(--transition);
    transition-delay: 0.1s;
}

.view-btn {
    padding: 0.8rem 2rem;
    background: var(--primary-color);
    color: var(--text-dark);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transform: translateY(20px);
    transition: var(--transition);
    transition-delay: 0.2s;
}

.portfolio-item:hover .item-overlay h3,
.portfolio-item:hover .item-overlay p,
.portfolio-item:hover .view-btn {
    transform: translateY(0);
}

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

/* ===== 服务区域 ===== */
.services {
    padding: 8rem 2rem;
    background: var(--white);
}

.services-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    position: relative;
    padding: 3rem 2rem;
    background: var(--bg-light);
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.service-card.featured {
    background: var(--text-dark);
    color: var(--white);
}

.service-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.3rem 1rem;
    background: var(--primary-color);
    color: var(--text-dark);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.service-card.featured p {
    color: rgba(255, 255, 255, 0.7);
}

.service-features {
    text-align: left;
}

.service-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.service-card.featured .service-features li {
    color: rgba(255, 255, 255, 0.7);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== 数据统计 ===== */
.stats {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

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

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    font-weight: 600;
    color: var(--primary-color);
    line-height: 1;
}

.stat-plus,
.stat-percent {
    font-size: 2rem;
    color: var(--primary-color);
}

.stat-label {
    display: block;
    margin-top: 0.5rem;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== 关于区域 ===== */
.about {
    padding: 8rem 2rem;
    background: var(--white);
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border-radius: 20px;
    aspect-ratio: 4/5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.placeholder-about {
    text-align: center;
    color: var(--text-muted);
}

.placeholder-about span {
    font-size: 5rem;
    display: block;
    margin-bottom: 1rem;
}

.experience-badge {
    position: absolute;
    bottom: -2rem;
    right: -2rem;
    width: 150px;
    height: 150px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.experience-badge .years {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.85rem;
    color: var(--text-dark);
    text-align: center;
}

.about-content {
    padding-right: 2rem;
}

.about-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin: 1rem 0 1.5rem;
    line-height: 1.3;
}

.about-text {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-icon {
    font-size: 1.5rem;
}

/* ===== 客户评价 ===== */
.testimonials {
    padding: 8rem 2rem;
    background: var(--bg-light);
}

.testimonials-slider {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    position: relative;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.quote-icon {
    font-family: 'Playfair Display', serif;
    font-size: 5rem;
    color: var(--primary-color);
    line-height: 1;
    opacity: 0.3;
    position: absolute;
    top: 1rem;
    left: 1.5rem;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-dark);
}

.author-name {
    display: block;
    font-weight: 500;
    color: var(--text-dark);
}

.author-title {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== 联系区域 ===== */
.contact {
    padding: 8rem 2rem;
    background: var(--white);
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.contact-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin: 1rem 0;
}

.contact-desc {
    color: var(--text-light);
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-item strong {
    display: block;
    margin-bottom: 0.3rem;
}

.contact-item p {
    color: var(--text-light);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    padding: 0.6rem 1.2rem;
    background: var(--bg-light);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-light);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--text-dark);
    color: var(--white);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group.full-width {
    grid-column: span 2;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-light);
    transition: var(--transition);
    outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-full {
    width: 100%;
    grid-column: span 2;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 5rem 2rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 1.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    max-width: 300px;
    line-height: 1.7;
}

.footer-links {
    display: contents;
}

.footer-column h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9rem;
}

/* ===== 灯箱 ===== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 2.5rem;
    color: var(--white);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
}

.lightbox-content {
    text-align: center;
    padding: 2rem;
}

.lightbox-image {
    max-width: 80vw;
    max-height: 70vh;
    margin-bottom: 2rem;
}

.lightbox-title {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.lightbox-category {
    color: var(--primary-color);
}

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

    .portfolio-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition);
    }

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

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

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

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

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }

    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-image {
        max-width: 500px;
        margin: 0 auto;
    }

    .testimonials-slider {
        grid-template-columns: 1fr;
        max-width: 600px;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .portfolio-item.large {
        grid-column: span 1;
    }

    .stats-container {
        grid-template-columns: 1fr 1fr;
    }

    .stat-number {
        font-size: 3rem;
    }

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

    .form-group.full-width,
    .btn-full {
        grid-column: span 1;
    }

    .experience-badge {
        width: 120px;
        height: 120px;
        bottom: -1rem;
        right: -1rem;
    }

    .experience-badge .years {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .filter-container {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

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

    .footer-brand {
        grid-column: span 1;
    }
}

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

.portfolio-item {
    animation: fadeInUp 0.6s ease forwards;
}

.portfolio-item:nth-child(2) { animation-delay: 0.1s; }
.portfolio-item:nth-child(3) { animation-delay: 0.2s; }
.portfolio-item:nth-child(4) { animation-delay: 0.3s; }
.portfolio-item:nth-child(5) { animation-delay: 0.4s; }
.portfolio-item:nth-child(6) { animation-delay: 0.5s; }
.portfolio-item:nth-child(7) { animation-delay: 0.6s; }
.portfolio-item:nth-child(8) { animation-delay: 0.7s; }