/* ===== 全局重置与基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #1a1a1a;
    --color-secondary: #2d2d2d;
    --color-accent: #c9a961;
    --color-accent-light: #ddc182;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f8f8f8;
    --color-bg-dark: #0f0f0f;

    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);

    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    line-height: 1.8;
    background: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* ===== 页面加载动画 ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-dark);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-circle {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(201, 169, 97, 0.2);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loader-content p {
    color: var(--color-accent);
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 4px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-smooth);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper {
    display: flex;
    flex-direction: column;
}

.logo {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 3px;
    margin: 0;
}

.logo-subtitle {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--color-accent);
    text-transform: uppercase;
    font-weight: 500;
    margin-top: -5px;
}

.nav-menu {
    display: flex;
    gap: 50px;
    align-items: center;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 5px 0;
    letter-spacing: 0.5px;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

.nav-menu a:hover::before {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    width: 30px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-smooth);
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-block;
    padding: 16px 40px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 50px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    text-transform: uppercase;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
    box-shadow: 0 4px 15px rgba(201, 169, 97, 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(201, 169, 97, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* ===== 英雄区域 ===== */
.hero-section {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
    z-index: 2;
}

.hero-content-wrapper {
    position: relative;
    z-index: 3;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: 0 20px;
}

.hero-tag {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: 30px;
    font-weight: 500;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 80px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 30px;
    letter-spacing: 5px;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease both;
}

.title-line:nth-child(1) {
    animation-delay: 0.3s;
}

.title-line:nth-child(2) {
    animation-delay: 0.5s;
}

.hero-description {
    font-size: 20px;
    font-weight: 300;
    line-height: 1.8;
    margin-bottom: 50px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.7s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.9s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-hint {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
    color: white;
}

.scroll-hint span {
    display: block;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 15px;
    opacity: 0.8;
}

.scroll-line {
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, white, transparent);
    margin: 0 auto;
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0%, 100% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(20px);
        opacity: 0.3;
    }
}

/* ===== 通用章节样式 ===== */
section {
    padding: 120px 0;
    position: relative;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 20px;
}

.section-tag.light {
    color: var(--color-accent-light);
}

.section-heading {
    font-family: var(--font-serif);
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.section-heading.light {
    color: white;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    font-weight: 300;
    margin-bottom: 60px;
}

.section-subtitle.light {
    color: rgba(255, 255, 255, 0.8);
}

.section-header-center {
    text-align: center;
    margin-bottom: 80px;
}

/* ===== 关于区域 ===== */
.about-section {
    background: var(--color-bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    height: 700px;
}

.about-image-main {
    position: absolute;
    top: 0;
    left: 0;
    width: 70%;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    z-index: 2;
}

.about-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.about-image-main:hover img {
    transform: scale(1.05);
}

.about-image-small {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 60%;
    height: 350px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    z-index: 1;
}

.about-image-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.about-image-small:hover img {
    transform: scale(1.05);
}

.about-stats {
    position: absolute;
    top: 50%;
    right: 10%;
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-xl);
    z-index: 3;
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 14px;
    color: var(--color-text-light);
    white-space: nowrap;
}

.section-text {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 25px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
    color: white;
    transition: var(--transition-smooth);
}

.feature-item:hover .feature-icon {
    transform: translateY(-5px) scale(1.1);
}

.feature-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-primary);
}

.feature-item p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== 理念区域 ===== */
.philosophy-section {
    background: white;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.philosophy-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

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

.card-image-wrapper {
    position: relative;
    height: 320px;
    overflow: hidden;
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.philosophy-card:hover .card-image-wrapper img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.card-content {
    padding: 40px 35px;
    position: relative;
}

.card-number {
    font-family: var(--font-serif);
    font-size: 80px;
    font-weight: 900;
    color: rgba(201, 169, 97, 0.1);
    position: absolute;
    top: -20px;
    right: 20px;
    line-height: 1;
    z-index: 0;
}

.card-content h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-primary);
    position: relative;
    z-index: 1;
}

.card-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 1px;
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1;
}

.card-link:hover {
    color: var(--color-accent-light);
    transform: translateX(5px);
    display: inline-block;
}

/* ===== 益处区域 ===== */
.benefits-section {
    background: var(--color-bg-light);
    padding-top: 0;
}

.benefits-hero {
    height: 60vh;
    position: relative;
    margin-bottom: 100px;
}

.benefits-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.benefits-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 100%);
}

.benefits-hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 2;
}

.benefits-hero-content h2 {
    font-family: var(--font-serif);
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.benefits-hero-content p {
    font-size: 20px;
    font-weight: 300;
    opacity: 0.9;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.benefit-card {
    background: white;
    padding: 40px 35px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.benefit-icon-wrapper {
    width: 100%;
    height: 200px;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 30px;
}

.benefit-icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.benefit-card:hover .benefit-icon-wrapper img {
    transform: scale(1.1);
}

.benefit-card h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.benefit-card > p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: 20px;
}

.benefit-list {
    list-style: none;
    padding-left: 0;
}

.benefit-list li {
    font-size: 14px;
    color: var(--color-text-light);
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.benefit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
    font-size: 16px;
}

/* ===== 科学研究时间线 ===== */
.science-section {
    background: white;
}

.research-timeline {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    padding-left: 50px;
}

.research-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-light));
}

.timeline-item {
    position: relative;
    margin-bottom: 80px;
    padding-left: 80px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-year {
    position: absolute;
    left: -18px;
    top: 0;
    width: 90px;
    height: 90px;
    background: white;
    border: 4px solid var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    color: var(--color-accent);
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.timeline-content {
    background: var(--color-bg-light);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(10px);
}

.timeline-content img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 25px;
}

.timeline-content h3 {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.timeline-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
}

/* ===== 实践指南区域 ===== */
.practice-section {
    position: relative;
    background: var(--color-bg-dark);
    color: white;
}

.practice-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.practice-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.practice-section .container {
    position: relative;
    z-index: 1;
}

.practice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
}

.practice-card-advanced {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
}

.practice-card-advanced:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.practice-icon {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.practice-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.practice-card-advanced:hover .practice-icon img {
    transform: scale(1.1);
}

.practice-content {
    padding: 40px;
}

.practice-num {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--color-accent-light);
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.practice-content h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

.practice-content > p {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 25px;
}

.practice-tips h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-accent-light);
    margin-bottom: 15px;
}

.practice-tips ul {
    list-style: none;
}

.practice-tips li {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.practice-tips li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* ===== 食谱区域 ===== */
.recipes-section {
    background: white;
}

.recipes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.recipe-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

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

.recipe-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.recipe-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.recipe-category {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(201, 169, 97, 0.95);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    z-index: 2;
}

.recipe-content {
    padding: 30px;
}

.recipe-content h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.recipe-content > p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.recipe-meta {
    display: flex;
    gap: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.recipe-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-text-light);
}

.recipe-meta svg {
    color: var(--color-accent);
}

/* ===== 故事区域 ===== */
.stories-section {
    background: var(--color-bg-light);
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.story-card {
    background: white;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

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

.story-image {
    width: 100%;
    height: 320px;
    overflow: hidden;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.story-card:hover .story-image img {
    transform: scale(1.05);
}

.story-content {
    padding: 40px;
    position: relative;
}

.story-quote {
    font-family: Georgia, serif;
    font-size: 120px;
    line-height: 1;
    color: rgba(201, 169, 97, 0.15);
    position: absolute;
    top: -20px;
    left: 20px;
    z-index: 0;
}

.story-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
    font-style: italic;
}

.story-author {
    margin-bottom: 25px;
}

.story-author h4 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.story-author span {
    font-size: 14px;
    color: var(--color-text-light);
}

.story-results {
    display: flex;
    gap: 30px;
    padding-top: 25px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.result-item {
    text-align: center;
}

.result-item strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 5px;
}

.result-item span {
    font-size: 13px;
    color: var(--color-text-light);
}

/* ===== 画廊区域 ===== */
.gallery-section {
    background: white;
    padding-bottom: 120px;
}

.gallery-masonry {
    columns: 3;
    column-gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 30px;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.gallery-item.tall {
    height: 450px;
}

.gallery-item.wide {
    column-span: all;
    height: 350px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.gallery-overlay h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.gallery-overlay p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

/* ===== 订阅区域 ===== */
.subscribe-section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.subscribe-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.subscribe-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.subscribe-section .container {
    position: relative;
    z-index: 1;
}

.subscribe-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    color: white;
}

.subscribe-content h2 {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.subscribe-content > p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.subscribe-form {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.subscribe-form input {
    flex: 1;
    padding: 18px 25px;
    border-radius: 50px;
    border: none;
    font-size: 15px;
    outline: none;
    background: rgba(255, 255, 255, 0.95);
}

.subscribe-note {
    font-size: 13px;
    opacity: 0.7;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.footer-col > p {
    line-height: 1.8;
    opacity: 0.8;
    margin-bottom: 30px;
}

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

.footer-social a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.footer-social a:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: 15px;
}

.footer-col ul li a {
    opacity: 0.8;
    transition: var(--transition-smooth);
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--color-accent);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.8;
    margin-bottom: 18px;
}

.footer-contact svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    opacity: 0.6;
    font-size: 14px;
}

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

.footer-links a {
    font-size: 14px;
    opacity: 0.6;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-accent);
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 55px;
    height: 55px;
    background: var(--color-accent);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-accent-light);
    transform: translateY(-5px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-image-wrapper {
        height: 500px;
    }

    .philosophy-grid,
    .benefits-grid,
    .recipes-grid,
    .stories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .gallery-masonry {
        columns: 2;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 30px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 100px 40px;
        gap: 30px;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-xl);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(12px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-12px);
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .section-heading {
        font-size: 36px;
    }

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

    .philosophy-grid,
    .benefits-grid,
    .recipes-grid,
    .stories-grid {
        grid-template-columns: 1fr;
    }

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

    .gallery-masonry {
        columns: 1;
    }

    .research-timeline {
        padding-left: 30px;
    }

    .timeline-item {
        padding-left: 60px;
    }

    .timeline-year {
        width: 70px;
        height: 70px;
        font-size: 14px;
        left: -23px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .subscribe-form {
        flex-direction: column;
    }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-light);
}

/* ===== 选中文本样式 ===== */
::selection {
    background: var(--color-accent);
    color: white;
}