/* ========================================
   云南省丘北县云泰食品有限责任公司官网
   CSS 变量系统与全局样式
   ======================================== */

/* ========== CSS 变量定义 ========== */
:root {
    /* 颜色变量 */
    --color-primary: #00A693;           /* 孔雀绿 - 主题色 */
    --color-primary-dark: #008273;      /* 深孔雀绿 - 悬浮效果 */
    --color-secondary: #D4A76A;         /* 土黄色 - 辅助色 */
    --color-accent: #C1272D;            /* 辣椒红 - 强调色 */
    --color-accent-dark: #8F1C20;       /* 深辣椒红 */
    --color-text-dark: #2F2A26;         /* 深暖灰 - 主文本 */
    --color-text-light: #FFFFFF;        /* 白色 - 浅色文本 */
    --color-text-gray: #6F665D;         /* 中暖灰 - 次文本 */
    --color-background: #F4F0E8;        /* 轻米色 - 页面背景 */
    --color-background-light: #FFFFFF;  /* 白色 - 卡片背景 */
    --color-border: #E2D3BB;            /* 米色边框 */
    --color-success: #4CBF8A;           /* 山野绿色 */
    --color-warning: #FFC25C;           /* 亮金黄 */
    --color-danger: #C1272D;            /* 辣椒红 */

    /* 渐变与装饰 */
    --gradient-hero: linear-gradient(120deg, rgba(193, 39, 45, 0.92) 0%, rgba(0, 166, 147, 0.9) 60%, rgba(212, 167, 106, 0.85) 100%);
    --gradient-card: linear-gradient(150deg, rgba(0, 166, 147, 0.12) 0%, rgba(212, 167, 106, 0.2) 70%);
    --gradient-accent: linear-gradient(135deg, rgba(193, 39, 45, 0.95) 0%, rgba(143, 28, 32, 0.95) 100%);

    /* 字体变量 */
    --font-family-main: 'Microsoft YaHei', 'SimHei', sans-serif;
    --font-family-heading: 'Microsoft YaHei', 'SimHei', sans-serif;
    --font-size-base: 1rem;             /* 16px */
    --font-size-small: 0.875rem;        /* 14px */
    --font-size-large: 1.125rem;        /* 18px */
    --font-size-h1: 2.5rem;             /* 40px */
    --font-size-h2: 2rem;               /* 32px */
    --font-size-h3: 1.5rem;             /* 24px */
    --font-size-h4: 1.25rem;            /* 20px */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* 间距变量 */
    --spacing-unit: 1rem;               /* 16px */
    --spacing-xs: 0.25rem;              /* 4px */
    --spacing-sm: 0.5rem;               /* 8px */
    --spacing-md: 1rem;                 /* 16px */
    --spacing-lg: 1.5rem;               /* 24px */
    --spacing-xl: 2rem;                 /* 32px */
    --spacing-2xl: 3rem;                /* 48px */
    --spacing-3xl: 4rem;                /* 64px */
    --spacing-4xl: 5rem;                /* 80px */

    /* 圆角变量 */
    --radius-small: 4px;
    --radius-medium: 8px;
    --radius-large: 12px;
    --radius-circle: 50%;
    --radius-pill: 999px;

    /* 阴影变量 */
    --shadow-small: 0 2px 4px rgba(45, 45, 45, 0.08);
    --shadow-primary: 0 16px 24px rgba(0, 166, 147, 0.18);
    --shadow-medium: 0 18px 35px rgba(0, 0, 0, 0.08);
    --shadow-large: 0 28px 45px rgba(193, 39, 45, 0.18);

    /* 过渡效果 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 响应式断点 */
    --breakpoint-mobile: 576px;
    --breakpoint-tablet: 768px;
    --breakpoint-desktop: 1024px;
    --breakpoint-wide: 1280px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-main);
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    background-color: var(--color-background);
    line-height: 1.6;
}

/* ========== 标题样式 ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-dark);
}

h1 {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-xl);
}

h2 {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: var(--font-size-h4);
    margin-bottom: var(--spacing-sm);
}

/* ========== 段落与文本 ========== */
p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-gray);
    line-height: 1.8;
}

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

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

/* ========== 列表样式 ========== */
ul, ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-image: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    color: var(--color-text-light);
    border: none;
    border-radius: var(--radius-medium);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-small);
}

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

.btn-secondary {
    background-image: linear-gradient(135deg, rgba(212, 167, 106, 0.95) 0%, rgba(255, 194, 92, 0.95) 100%);
    color: var(--color-text-dark);
}

.btn-secondary:hover {
    filter: brightness(1.05);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--gradient-accent);
    color: var(--color-text-light);
    border-color: transparent;
    box-shadow: var(--shadow-small);
}

/* ========== 容器与布局 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

/* ========== Grid 布局 ========== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========== 卡片样式 ========== */
.card {
    background: var(--color-background-light);
    background-image: var(--gradient-card);
    border-radius: var(--radius-medium);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-small);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 0;
    overflow: hidden;
}

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

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(0, 166, 147, 0.18), transparent 55%), radial-gradient(circle at bottom left, rgba(193, 39, 45, 0.12), transparent 60%);
    opacity: 0.75;
    pointer-events: none;
    z-index: -1;
}

.card-header {
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* ========== 图片样式 ========== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-responsive {
    width: 100%;
    height: auto;
}

.img-rounded {
    border-radius: var(--radius-medium);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.6px;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.18);
    color: var(--color-text-light);
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(6px);
}

.badge-ethnic {
    background: rgba(193, 39, 45, 0.85);
    border-color: rgba(255, 199, 92, 0.55);
}

.badge-outline {
    background: rgba(0, 166, 147, 0.2);
    color: var(--color-text-light);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ========== 云南风情主题组件 ========== */
.hero-banner {
    position: relative;
    display: flex;
    align-items: flex-end;
    min-height: 85vh;
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
    color: var(--color-text-light);
    overflow: hidden;
}

.hero-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 10%, rgba(0, 0, 0, 0.68) 100%);
    z-index: 0;
}

.hero-media {
    position: absolute;
    inset: 0;
    z-index: -2;
}

.hero-video,
.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 15% 20%, rgba(212, 167, 106, 0.25), transparent 55%), radial-gradient(circle at 85% 30%, rgba(0, 166, 147, 0.25), transparent 50%);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.hero-heading {
    max-width: 780px;
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
    line-height: 1.2;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
}

.hero-description {
    max-width: 620px;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.86);
    margin-bottom: var(--spacing-2xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-stats {
    position: relative;
    z-index: 1;
    margin-top: var(--spacing-3xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.metric-card {
    backdrop-filter: blur(6px);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-large);
    padding: var(--spacing-lg);
    color: var(--color-text-light);
    text-align: left;
}

.metric-value {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.section-intro {
    max-width: 780px;
    margin: 0 auto var(--spacing-3xl);
    text-align: center;
}

.section-intro p {
    font-size: 1.05rem;
    color: var(--color-text-gray);
}

.section-ornament {
    width: 80px;
    height: 8px;
    margin: var(--spacing-md) auto 0;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-pill);
}

.map-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    align-items: center;
}

.map-visual {
    position: relative;
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.map-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.1) 20%, rgba(0, 0, 0, 0.55) 100%);
}

.map-labels {
    position: absolute;
    inset: 0;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    color: var(--color-text-light);
}

.map-labels span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.98rem;
}

.map-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.map-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.map-card img {
    width: 72px;
    height: 72px;
    object-fit: cover;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
}

.map-card h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.timeline {
    display: grid;
    gap: var(--spacing-lg);
}

.timeline-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
}

.story-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
}

.story-card .card {
    min-height: 100%;
}

.story-avatar {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-circle);
    object-fit: cover;
    box-shadow: var(--shadow-small);
}

.story-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    background: rgba(0, 166, 147, 0.15);
    color: var(--color-primary-dark);
}

.chip-accent {
    background: rgba(193, 39, 45, 0.18);
    color: var(--color-accent-dark);
}

.media-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.media-card {
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-small);
    background: var(--color-background-light);
    display: flex;
    flex-direction: column;
}

.media-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.media-card-content {
    padding: var(--spacing-lg);
    flex: 1;
}

.media-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.media-meta {
    font-size: 0.85rem;
    color: var(--color-text-gray);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.feature-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-circle);
    display: grid;
    place-items: center;
    background: rgba(0, 166, 147, 0.12);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    font-size: 1.15rem;
    margin-bottom: var(--spacing-md);
}

.cta-panel {
    background: linear-gradient(135deg, rgba(0, 166, 147, 0.08) 0%, rgba(212, 167, 106, 0.25) 100%);
    border-radius: var(--radius-large);
    padding: var(--spacing-3xl);
    display: grid;
    gap: var(--spacing-lg);
    align-items: center;
}

.cta-panel h3 {
    color: var(--color-accent);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.floating-banner {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-large);
    padding: var(--spacing-3xl);
    background: linear-gradient(135deg, rgba(0, 166, 147, 0.14) 0%, rgba(212, 167, 106, 0.38) 100%);
}

.floating-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 85% 15%, rgba(193, 39, 45, 0.18), transparent 60%);
    opacity: 0.5;
    pointer-events: none;
}

.floating-banner > * {
    position: relative;
    z-index: 1;
}

.subscribe-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.subscribe-form input {
    flex: 1 1 240px;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.25);
    color: var(--color-text-light);
}

.subscribe-form input::placeholder {
    color: rgba(255, 255, 255, 0.75);
}

.stats-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.stats-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-large);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(0, 166, 147, 0.18);
    box-shadow: var(--shadow-small);
    text-align: center;
}

.stats-card h3 {
    color: var(--color-accent);
}

.highlight-box {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.highlight-box h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.highlight-box p {
    margin: 0;
}

.subpage-hero {
    position: relative;
    display: flex;
    align-items: center;
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
    overflow: hidden;
    border-radius: 0 0 var(--radius-large) var(--radius-large);
    background: linear-gradient(135deg, rgba(0, 166, 147, 0.12) 0%, rgba(193, 39, 45, 0.12) 60%, rgba(212, 167, 106, 0.22) 100%);
}

.subpage-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 166, 147, 0.2), transparent 55%);
    pointer-events: none;
}

.subpage-hero .hero-badges {
    margin-bottom: var(--spacing-sm);
}

.subpage-hero h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.subpage-hero p {
    max-width: 640px;
    color: var(--color-text-gray);
}

.data-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.data-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(212, 167, 106, 0.35);
    border-radius: var(--radius-large);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-small);
}

.data-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.table-like {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
}

.table-like thead {
    background: rgba(0, 166, 147, 0.15);
}

.table-like th,
.table-like td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.table-like tbody tr:hover {
    background: rgba(212, 167, 106, 0.12);
}

.icon-bullet {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.icon-bullet strong {
    color: var(--color-accent);
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tab-item {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    background: rgba(0, 166, 147, 0.12);
    color: var(--color-primary);
    font-size: 0.9rem;
}

.tab-item.active {
    background: var(--gradient-accent);
    color: var(--color-text-light);
}

.two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    align-items: start;
}

.list-styled {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--spacing-sm);
}

.list-styled li {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-medium);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 166, 147, 0.15);
}
.img-circle {
    border-radius: var(--radius-circle);
}

/* ========== 固定导航栏 ========== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(210, 190, 160, 0.35);
    backdrop-filter: blur(14px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.navbar-brand {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: calc(-1 * var(--spacing-lg));
    white-space: nowrap;
}

.navbar-brand img {
    height: 50px;
    width: auto;
}

@media (max-width: 768px) {
    .navbar-brand {
        margin-left: 0;
        font-size: 1.15rem;
        white-space: normal;
    }
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.navbar-item {
    position: relative;
}

.navbar-link {
    color: var(--color-text-dark);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.5px;
    transition: color var(--transition-fast);
    position: relative;
    display: block;
    padding: var(--spacing-sm) 0;
}

.navbar-link:hover {
    color: var(--color-primary);
}

.navbar-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 100%;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: var(--radius-pill);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-normal);
}

.navbar-link:hover::after {
    transform: scaleX(1);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.96);
    list-style: none;
    min-width: 200px;
    box-shadow: var(--shadow-medium);
    border-radius: var(--radius-medium);
    margin-top: var(--spacing-sm);
    overflow: hidden;
}

.dropdown:hover .dropdown-menu {
    display: block;
    animation: slideDown var(--transition-fast) ease;
}

.dropdown-item {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-dark);
    transition: all var(--transition-fast);
    display: block;
}

.dropdown-item:hover {
    background: rgba(0, 166, 147, 0.08);
    color: var(--color-accent);
    padding-left: calc(var(--spacing-lg) + var(--spacing-sm));
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 主体内容区域 ========== */
main {
    margin-top: 100px;
    min-height: calc(100vh - 100px);
}

/* ========== 页脚样式 ========== */
footer {
    background: #082f2a;
    color: var(--color-text-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.12), transparent 60%), radial-gradient(circle at 85% 80%, rgba(255, 255, 255, 0.08), transparent 55%);
    pointer-events: none;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
    margin-left: 0;
}

.footer-section a {
    color: var(--color-text-light);
}

.footer-section a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.75);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .hero-banner {
        min-height: 70vh;
        padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    }

    .hero-stats {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

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

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    main {
        margin-top: 120px;
    }

    .hero-banner {
        align-items: center;
        text-align: center;
    }

    .hero-badges {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-stats {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
        gap: var(--spacing-md);
    }

    .map-section {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .two-column {
        grid-template-columns: 1fr;
    }

    .tabs {
        justify-content: center;
    }

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

    .subscribe-form input {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .navbar {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

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

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

    .map-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .map-card img {
        margin: 0 auto;
    }

    .tabs {
        flex-direction: column;
        align-items: stretch;
    }

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

/* ========== 工具类 ========== */
.text-center {
    text-align: center;
}

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

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

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

.text-secondary {
    color: var(--color-secondary);
}

.text-muted {
    color: var(--color-text-gray);
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }
.p-5 { padding: var(--spacing-2xl); }

.bg-primary {
    background-color: var(--color-primary);
}

.bg-secondary {
    background-color: var(--color-secondary);
}

.bg-light {
    background-color: var(--color-background);
}

.border-bottom {
    border-bottom: 1px solid var(--color-border);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-primary) 100%);
    border-radius: var(--radius-small);
}