/**
 * 柳林酒业官网 - Hero 全屏滚动样式
 * 提取自 index.html 的内联样式
 */

:root {
    --primary: #5EAAA8;
    --primary-dark: #4A8A8A;
    --primary-light: #8FCACA;
    --primary-lighter: #C5E4E3;
    --white: #ffffff;
    --black: #000000;
    --dark: #1a1a1a;
    --gray: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: auto;
    overflow: hidden;
}

body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
    color: var(--white);
    overflow: hidden;
    background: var(--black);
}

/* ========== Hero 视频区域 ========== */
.hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 5;
    pointer-events: none;
}

.hero-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    z-index: 4;
    transform-origin: center center;
    pointer-events: none;
}

.hero-iframe.hidden {
    display: none;
}

.play-hint {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    cursor: pointer;
    transition: opacity 0.5s ease;
}

.play-hint.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-hint-content {
    text-align: center;
    color: white;
}

.play-hint-content i {
    font-size: 80px;
    color: var(--primary);
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

.play-hint-content p {
    font-size: 18px;
    letter-spacing: 3px;
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* 视频遮罩 */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
            rgba(0, 0, 0, 0.4) 0%,
            rgba(0, 0, 0, 0.3) 50%,
            rgba(0, 0, 0, 0.5) 100%);
}

/* ========== 右上角导航 ========== */
.top-nav {
    position: absolute;
    top: 40px;
    right: 40px;
    z-index: 100;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.top-nav.hidden {
    opacity: 0;
}

.top-nav:hover {
    opacity: 1;
}

.vertical-nav {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 25px;
}

.vertical-nav a {
    text-decoration: none;
    color: var(--white);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 4px;
    writing-mode: vertical-rl;
    text-orientation: upright;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.9;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.6);
    padding: 0 15px;
    height: auto;
    white-space: nowrap;
    position: relative;
    cursor: pointer;
}

.vertical-nav a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 0;
    background: var(--primary);
    transition: height 0.3s ease;
    box-shadow: 0 0 8px rgba(0, 166, 153, 0.6);
}

.vertical-nav a:hover {
    color: var(--primary-light);
    opacity: 1;
    text-shadow: 0 0 20px rgba(94, 170, 168, 0.5);
}

.vertical-nav a:hover::before {
    height: 100%;
}

/* 搜索框 */
.nav-search {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.nav-search input {
    width: 0;
    padding: 8px 0;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    color: var(--white);
    font-size: 12px;
    outline: none;
    transition: all 0.3s ease;
    opacity: 0;
}

.nav-search:hover input {
    width: 120px;
    padding: 8px 10px;
    opacity: 1;
}

.nav-search input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.nav-search i {
    color: var(--primary);
    font-size: 13px;
    cursor: pointer;
    transition: color 0.3s;
}

.nav-search:hover i {
    color: var(--white);
}

/* ========== 视频进度条 ========== */
.video-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: transparent;
}

.video-progress-bar {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.1s;
    opacity: 0.6;
}

/* ========== 视频控制按钮组 ========== */
.video-controls-group {
    position: absolute;
    bottom: 50px;
    right: 50px;
    display: flex;
    gap: 15px;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.video-controls-group.hidden {
    opacity: 0;
}

/* 向下翻页按钮 */
.scroll-down-btn {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: white;
    font-size: 28px;
    cursor: pointer;
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: bounce 2s infinite;
    opacity: 1;
}

.scroll-down-btn.hidden {
    opacity: 0;
}

.scroll-down-btn:hover {
    background: rgba(94, 170, 168, 0.9);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateX(-50%) scale(1.15);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

.video-control {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-control:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.video-control i {
    color: white;
    font-size: 12px;
}

.video-switch-btn {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-switch-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.video-switch-btn i {
    color: white;
    font-size: 12px;
}

/* 静音按钮 */
.video-mute-btn {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-mute-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.video-mute-btn i {
    color: white;
    font-size: 13px;
}

.video-mute-btn.muted i {
    color: rgba(255, 255, 255, 0.5);
}

/* 移动端视频海报 */
.mobile-video-poster {
    display: none;
    position: absolute;
    inset: 0;
    background: url('./images/liulinLiquuor.png') center/cover no-repeat;
    z-index: 15;
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.mobile-video-poster:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(94, 170, 168, 0.5);
}

.poster-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
            rgba(0, 0, 0, 0.3) 0%,
            rgba(0, 0, 0, 0.1) 40%,
            rgba(0, 0, 0, 0.4) 100%);
    pointer-events: none;
}

.poster-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    min-width: 44px;
    min-height: 44px;
    background: rgba(94, 170, 168, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
    box-shadow: 0 4px 20px rgba(94, 170, 168, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.poster-play-btn:hover {
    background: rgba(94, 170, 168, 1);
    transform: translate(-50%, -50%) scale(1.05);
}

.poster-play-btn:active {
    transform: translate(-50%, -50%) scale(0.95);
}

.poster-play-btn i {
    font-size: 28px;
    color: #fff;
    margin-left: 3px;
}

.poster-hint {
    position: absolute;
    bottom: 15%;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    letter-spacing: 2px;
    text-shadow: 1px 1px 8px rgba(0, 0, 0, 0.7);
    white-space: nowrap;
}

.hero-video.hidden {
    display: none;
}

/* ========== 向下滚动提示 ========== */
.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.scroll-hint.hidden {
    opacity: 0;
}

.scroll-hint i {
    color: var(--primary);
    font-size: 24px;
    animation: bounce 2s infinite;
}

/* ========== 外部视频播放区域 ========== */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(94, 170, 168, 0.1), rgba(0, 0, 0, 0.3));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    z-index: 5;
    pointer-events: none;
}

.video-overlay i {
    font-size: 80px;
    margin-bottom: 20px;
    opacity: 0.6;
}

.video-overlay p {
    font-size: 18px;
    letter-spacing: 4px;
    opacity: 0.6;
}

/* ========== 页面内容区 ========== */
.page-content {
    background: #0a0a0a;
}

.section {
    padding: 100px 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 100px;
    padding-right: 100px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--white);
}

.section-title p {
    color: var(--primary);
    font-size: 14px;
    letter-spacing: 3px;
}

/* ========== 品牌简介 ========== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-intro-img {
    border-radius: 20px;
    overflow: hidden;
}

.about-intro-img img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-intro-content h3 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--white);
}

.about-intro-content p {
    font-size: 16px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all 0.3s;
}

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

/* ========== 四大传承 ========== */
.heritage {
    background: #111;
}

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

.heritage-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(94, 170, 168, 0.2);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.heritage-card:hover {
    background: rgba(94, 170, 168, 0.1);
    border-color: var(--primary);
    transform: translateY(-10px);
}

.heritage-icon {
    width: 80px;
    height: 80px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 28px;
    color: var(--white);
}

.heritage-card h3 {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 15px;
}

.heritage-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

/* ========== 产品展示 ========== */
.products {
    background: #0a0a0a;
}

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

.product-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(94, 170, 168, 0.2);
}

.product-img {
    height: 280px;
    background: linear-gradient(135deg, #1a1a1a, #0d0d0d);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-img img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 18px;
    color: var(--white);
    margin-bottom: 10px;
}

.product-info .series {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 10px;
}

.product-info .price {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.products-more {
    text-align: center;
    margin-top: 50px;
}

/* ========== 招商招聘 ========== */
.investment-recruitment {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.ir-card {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: 20px;
    padding: 50px;
    text-align: center;
}

.ir-card h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--white);
}

.ir-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    line-height: 1.8;
}

.ir-card .btn {
    background: var(--white);
    color: var(--primary-dark);
    border-color: var(--white);
}

.ir-card .btn:hover {
    background: transparent;
    color: var(--white);
}

/* ========== 数据统计 ========== */
.stats {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

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

.stat-number {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
    letter-spacing: 2px;
}

/* ========== 新闻动态 ========== */
.news {
    background: #111;
}

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

.news-featured {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 100%;
    min-height: 400px;
}

.news-featured img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-featured-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
}

.news-category {
    display: inline-block;
    background: var(--primary);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.news-featured-content h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.news-featured-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 15px;
    transition: all 0.3s;
}

.news-item:hover {
    background: rgba(94, 170, 168, 0.1);
    transform: translateX(10px);
}

.news-item-img {
    width: 120px;
    height: 90px;
    border-radius: 10px;
    overflow: hidden;
    flex-shrink: 0;
}

.news-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-item-content h4 {
    font-size: 16px;
    color: var(--white);
    margin-bottom: 8px;
}

.news-item-content p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== 页脚 ========== */
.footer {
    background: #000;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--primary);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.footer-column a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact i {
    color: var(--primary);
    width: 20px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
}

/* 动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 全屏滚动容器 ========== */
.fullscreen-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.fullscreen-section {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1.000), opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    overflow: hidden;
}

.fullscreen-section.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.fullscreen-section.prev {
    transform: translateY(-100%);
    opacity: 0;
}

.section-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.section-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2;
}

.section-content {
    position: relative;
    z-index: 3;
    max-width: 1200px;
    width: 100%;
    padding: 0 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.section-text h2 {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--white);
    font-weight: 600;
}

.section-text .subtitle {
    font-size: 16px;
    color: var(--primary-light);
    letter-spacing: 3px;
    margin-bottom: 30px;
}

.section-text p {
    font-size: 18px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 30px;
}

.section-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.section-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    font-size: 16px;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(94, 170, 168, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
    text-decoration: none;
    font-size: 16px;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--white);
    color: var(--dark);
    transform: translateY(-3px);
}

/* ========== 深色背景区块 ========== */
.bg-dark {
    background: linear-gradient(135deg, var(--dark), #2d4a4a);
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.bg-black {
    background: var(--black);
}

/* ========== 区块底部页脚信息 ========== */
.section-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 25px 40px 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.3));
    z-index: 10;
}

.section-footer .footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

.section-footer .footer-left {
    flex: 1;
    text-align: left;
}

.section-footer .footer-center {
    flex: 1;
    text-align: center;
}

.section-footer .footer-right {
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.section-footer .footer-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2), transparent);
    margin-bottom: 20px;
}

.section-footer .footer-links {
    margin-bottom: 12px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.5px;
}

.section-footer .footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

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

.section-footer .footer-links span {
    margin: 0 12px;
    color: rgba(255, 255, 255, 0.3);
}

.section-footer .footer-company h3 {
    font-size: 14px;
    color: var(--white);
    margin-bottom: 6px;
    font-weight: 500;
    letter-spacing: 1px;
}

.section-footer .footer-company p {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    margin: 4px 0;
}

.section-footer .footer-certifications p {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.4);
    margin: 3px 0;
}

.section-footer .social-item {
    text-align: center;
}

.section-footer .qr-code-placeholder {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 6px;
    font-size: 22px;
    color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.section-footer .qr-code-placeholder:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary);
    color: var(--primary);
}

.section-footer .social-item p {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.6);
}

/* ========== 侧边导航圆点 ========== */
.section-side-nav {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: none;
    flex-direction: column;
    gap: 12px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.section-side-nav.show {
    display: flex;
}

.section-side-nav .nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: block;
    list-style: none;
}

.section-side-nav .nav-dot:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.section-side-nav .nav-dot.active {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(0, 166, 153, 0.5);
}

.section-side-nav .nav-dot .tooltip {
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 166, 153, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.section-side-nav .nav-dot .tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.section-side-nav .nav-dot:hover .tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* ========== 动画效果 ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

.active .fade-in-up {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease-out;
}

.active .fade-in-left {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease-out;
}

.active .fade-in-right {
    opacity: 1;
    transform: translateX(0);
}

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

.delay-3 {
    transition-delay: 0.6s;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .section-content {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 40px;
    }

    .section-text h2 {
        font-size: 36px;
    }

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

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

    .investment-recruitment {
        grid-template-columns: 1fr;
    }

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

    .section {
        padding-left: 40px;
        padding-right: 40px;
    }
}

@media (max-width: 768px) {
    .top-nav {
        top: 20px;
        right: 15px;
        gap: 10px;
    }

    .vertical-nav a {
        font-size: 11px;
        padding: 5px 8px;
    }

    .video-controls-group {
        bottom: 30px;
        right: 20px;
    }

    .video-control,
    .video-switch-btn {
        width: 30px;
        height: 30px;
    }

    .heritage-grid,
    .products-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

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

    .section {
        padding: 60px 20px;
    }

    .section-side-nav {
        right: 15px;
        gap: 10px;
    }

    .section-side-nav .nav-dot {
        width: 10px;
        height: 10px;
    }

    .section-side-nav .nav-dot .tooltip {
        display: none;
    }

    .section-content {
        padding: 0 20px;
    }

    .section-text h2 {
        font-size: 28px;
    }

    .section-text p {
        font-size: 16px;
    }

    .section-footer {
        padding: 15px 20px 12px;
    }

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

    .section-footer .footer-left {
        text-align: center;
    }

    .section-footer .footer-right {
        gap: 20px;
        justify-content: center;
    }

    .section-footer .qr-code-placeholder {
        width: 45px;
        height: 45px;
    }

    html {
        overflow: auto !important;
    }

    body {
        overflow: auto !important;
    }

    .fullscreen-container {
        position: relative;
        width: 100%;
        height: auto;
        overflow: visible;
    }

    .fullscreen-section {
        position: relative !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        width: 100% !important;
        height: auto !important;
        min-height: 100vh;
    }

    .fullscreen-section.active {
        transform: none !important;
    }

    .fullscreen-section.prev {
        transform: none !important;
    }

    .hero {
        width: 100%;
        min-height: 100vh;
    }

    .hero-video-container {
        position: relative;
        width: 100%;
        height: 100vh;
        min-height: 480px;
    }

    .hero-video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .mobile-video-poster {
        display: block;
        min-height: 480px;
    }

    .poster-play-btn {
        width: 64px;
        height: 64px;
    }

    .poster-play-btn i {
        font-size: 24px;
    }

    .poster-hint {
        font-size: 12px;
        bottom: 12%;
    }

    .section-side-nav {
        display: none !important;
    }
}