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

:root {
    --color-primary: #8B5E3C;
    --color-primary-light: #A67B5B;
    --color-primary-dark: #5C3A21;
    --color-accent: #C9A96E;
    --color-accent-light: #E8D5B5;
    --color-bg: #FDF8F3;
    --color-bg-alt: #F5EDE4;
    --color-text: #2C1810;
    --color-text-light: #6B4F3A;
    --color-white: #FFFFFF;
    --color-shadow: rgba(91, 57, 30, 0.1);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border-radius: 50px;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(139, 94, 60, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(139, 94, 60, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===== 导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
    padding: 16px 0;
}

.header.scrolled {
    background: rgba(253, 248, 243, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px var(--color-shadow);
    padding: 8px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-white);
    transition: var(--transition);
}

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

.logo-icon {
    font-size: 1.6rem;
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-list a {
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    padding-bottom: 4px;
    transition: var(--transition);
}

.header.scrolled .nav-list a {
    color: var(--color-text);
}

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

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

.nav-list a.active {
    color: var(--color-accent);
}

.header.scrolled .nav-list a.active {
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--color-white);
    transition: var(--transition);
}

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

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2C1810 0%, #5C3A21 50%, #8B5E3C 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(201, 169, 110, 0.08) 0%, transparent 60%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(5%, 5%); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 120px 20px 60px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

/* ===== 通用 Section ===== */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    position: relative;
}

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

/* ===== Features ===== */
.features {
    background: var(--color-bg-alt);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: 0 4px 20px var(--color-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(91, 57, 30, 0.15);
}

.feature-icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

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

/* ===== Product Grid ===== */
.products-showcase {
    background: var(--color-bg);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px var(--color-shadow);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(91, 57, 30, 0.18);
}

.product-image {
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-accent-light));
    position: relative;
    overflow: hidden;
}

.product-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(44, 24, 16, 0.4));
}

.product-info {
    padding: 24px;
}

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

.product-info .product-category {
    font-size: 0.85rem;
    color: var(--color-primary-light);
    font-family: var(--font-sans);
    font-weight: 500;
    margin-bottom: 8px;
}

.product-info p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 12px;
}

.product-price .price {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
}

.product-price .original-price {
    font-size: 0.95rem;
    color: #aaa;
    text-decoration: line-through;
}

/* ===== Testimonials ===== */
.testimonials {
    background: var(--color-bg-alt);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: var(--color-white);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px var(--color-shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(91, 57, 30, 0.12);
}

.testimonial-card .quote {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-card .author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.testimonial-card .author-info h4 {
    font-size: 1rem;
    color: var(--color-primary-dark);
}

.testimonial-card .author-info span {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ===== Page Hero ===== */
.page-hero {
    padding: 140px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #2C1810 0%, #5C3A21 50%, #8B5E3C 100%);
    color: var(--color-white);
}

.page-hero h1 {
    font-size: 3rem;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: 50px;
    border: 2px solid var(--color-primary-light);
    background: transparent;
    color: var(--color-primary-dark);
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    background: var(--color-primary-light);
    color: var(--color-white);
}

.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* ===== About ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

.about-text p {
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-image .image-placeholder {
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-accent-light));
    border-radius: var(--radius);
    padding: 80px 40px;
    text-align: center;
    font-size: 4rem;
    box-shadow: 0 8px 30px var(--color-shadow);
}

.about-image .image-placeholder p {
    margin-top: 16px;
    font-size: 1rem;
    color: var(--color-text-light);
}

/* ===== Stats ===== */
.stats {
    background: var(--color-bg-alt);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-sans);
    line-height: 1.2;
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: 8px;
}

/* ===== Contact ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info h2,
.contact-form-wrapper h2 {
    font-size: 1.8rem;
    color: var(--color-primary-dark);
    margin-bottom: 32px;
}

.info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.info-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-bg-alt);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-item h4 {
    font-size: 1rem;
    color: var(--color-primary-dark);
    margin-bottom: 4px;
}

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

/* ===== Form ===== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 600;
    color: var(--color-primary-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 14px 18px;
    border: 2px solid #e0d5c8;
    border-radius: var(--radius-sm);
    font-family: var(--font-serif);
    font-size: 1rem;
    background: var(--color-white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(139, 94, 60, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #e74c3c;
}

.error-msg {
    font-size: 0.85rem;
    color: #e74c3c;
    min-height: 20px;
}

.form-success {
    text-align: center;
    padding: 40px;
    font-size: 1.2rem;
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== Footer ===== */
.footer {
    background: #1a0f0a;
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-white);
    margin-left: 8px;
}

.footer-brand p {
    margin-top: 12px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-accent);
    margin-bottom: 16px;
    font-size: 1rem;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-contact p {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(253, 248, 243, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        gap: 0;
        padding: 16px 0;
        box-shadow: 0 4px 20px var(--color-shadow);
    }

    .nav-list.open {
        display: flex;
    }

    .nav-list a {
        padding: 14px 24px;
        color: var(--color-text) !important;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }

    .nav-toggle {
        display: block;
    }

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

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

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

    .page-hero h1 {
        font-size: 2.2rem;
    }

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

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-number {
        font-size: 2.2rem;
    }

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

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

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

    .btn {
        width: 100%;
        justify-content: center;
    }

    .filter-bar {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }

    .filter-btn {
        flex-shrink: 0;
    }
}