/* ============================================================
   中赛照明 - 主样式表
   已合并：字体、变量定义、重置样式、通用组件
   基础样式请引用 base.css
   ============================================================ */

/* 覆盖Bootstrap默认a标签样式 */
a { color: inherit; text-decoration: none; }
a:hover { color: inherit; text-decoration: none; }

/* 基础滚动设置 - 平滑滚动 */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 0;
}


/* 页面加载动画（全局） */
.page-loader {
    position: fixed;
    inset: 0;
    top: 80px;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

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

.loader-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    position: relative;
}

.loader-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--border);
    border-radius: 50%;
}

.loader-ring::before {
    content: '';
    position: absolute;
    inset: -3px;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: loaderSpin 1.2s linear infinite;
}

.loader-ring::after {
    content: '';
    position: absolute;
    inset: 6px;
    border: 2px solid transparent;
    border-bottom-color: var(--primary);
    border-radius: 50%;
    animation: loaderSpin 0.8s linear infinite reverse;
}

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

.loader-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    animation: loaderPulse 1.5s ease-in-out infinite;
}

@keyframes loaderPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 移动端滚动优化 - 降低滚动速度使动画更流畅 */
@media (max-width: 768px) {
    html {
        scroll-behavior: auto;
    }
    
    body {
        -webkit-overflow-scrolling: touch;
        overflow-y: scroll;
    }
    
    /* 降低移动端 AOS 动画速度，让滚动更平滑 */
    [data-aos] {
        transition-duration: 2.5s !important;
    }
    
    /* 降低视差元素速度 */
    .hero-content {
        transform: none !important;
    }
    
    .light-beam,
    .light-beam-2 {
        transform: none !important;
    }
}

/* ===================== INTRO SCREEN - 光束开场动画 ===================== */
/* 注意：引导页使用独立的金色主题，不受全局青绿配色的影响 */
#intro {
    --intro-gold: #D4AF37;
    --intro-gold-light: #E8C36C;
    --intro-gold-dark: #C89B2A;
    
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #050504;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 1.5s ease, visibility 1.5s ease;
}

#intro.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* 初始遮罩层 - 先黑屏，然后淡出显示光晕效果 */
.intro-cover {
    position: absolute;
    inset: 0;
    background: #050504;
    z-index: 100;
    animation: coverFade 2s ease-out forwards;
    animation-delay: 0.8s;
    pointer-events: none;
}

@keyframes coverFade {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* 中心光晕 - 爆炸式扩散 */
.intro-center-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1500px;
    height: 1500px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(212, 175, 55, 0.5) 0%,
        rgba(212, 175, 55, 0.35) 10%,
        rgba(212, 175, 55, 0.2) 25%,
        rgba(212, 175, 55, 0.1) 45%,
        transparent 65%
    );
    z-index: 1;
    opacity: 0;
    animation: glowExplode 5s ease-out forwards;
}

@keyframes glowExplode {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0); }
    15% { opacity: 1; transform: translate(-50%, -50%) scale(0.2); }
    35% { opacity: 1; transform: translate(-50%, -50%) scale(0.5); }
    55% { opacity: 0.9; transform: translate(-50%, -50%) scale(0.8); }
    75% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
    100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
}

/* 光晕旋转环 */
.intro-glow-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    border: 3px solid rgba(212, 175, 55, 0.4);
    z-index: 2;
    opacity: 0;
    animation: ringExpand 2.5s ease-out forwards;
}

.intro-glow-ring:nth-child(2) {
    animation-delay: 0.3s;
    border-color: rgba(212, 175, 55, 0.25);
}

.intro-glow-ring:nth-child(3) {
    animation-delay: 0.6s;
    border-color: rgba(212, 175, 55, 0.15);
}

@keyframes ringExpand {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.3);
        border-width: 8px;
    }
    40% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(0.7);
        border-width: 3px;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.3);
        border-width: 1px;
    }
}

/* 顶部光束 - 聚光灯效果 - 增强版 */
.intro-top-beam {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(
            ellipse 60% 40% at 50% 0%,
            rgba(255, 255, 255, 0.4) 0%,
            rgba(255, 248, 220, 0.25) 15%,
            rgba(212, 175, 55, 0.1) 35%,
            transparent 60%
        ),
        linear-gradient(
            180deg,
            rgba(255, 255, 255, 0.3) 0%,
            rgba(255, 248, 220, 0.2) 25%,
            rgba(255, 235, 180, 0.1) 50%,
            transparent 100%
        );
    z-index: 3;
    animation: spotLight 3s ease-in-out infinite;
}

/* 动态光线背景 */
.intro-light-lines {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.light-line {
    position: absolute;
    background: linear-gradient(
        180deg,
        rgba(212, 175, 55, 0.15) 0%,
        rgba(212, 175, 55, 0.08) 50%,
        transparent 100%
    );
    transform-origin: top center;
    opacity: 0;
    animation: lineFloat var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes lineFloat {
    0%, 100% {
        opacity: 0;
        transform: translateX(0) scaleY(0.8);
    }
    20% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
        transform: translateX(var(--drift)) scaleY(1);
    }
    80% {
        opacity: 0.3;
    }
}

.line-1 {
    left: 10%;
    top: 0;
    width: 1px;
    height: 60%;
    --duration: 8s;
    --delay: 0s;
    --drift: -20px;
}
.line-2 {
    left: 20%;
    top: 0;
    width: 1px;
    height: 75%;
    --duration: 10s;
    --delay: 1.5s;
    --drift: 15px;
}
.line-3 {
    left: 35%;
    top: 0;
    width: 2px;
    height: 50%;
    --duration: 9s;
    --delay: 0.8s;
    --drift: -10px;
    background: linear-gradient(180deg, rgba(255, 215, 0, 0.2) 0%, rgba(212, 175, 55, 0.1) 50%, transparent 100%);
}
.line-4 {
    left: 50%;
    top: 0;
    width: 1px;
    height: 65%;
    --duration: 11s;
    --delay: 2s;
    --drift: 25px;
}
.line-5 {
    left: 65%;
    top: 0;
    width: 1px;
    height: 55%;
    --duration: 7s;
    --delay: 0.3s;
    --drift: -15px;
}
.line-6 {
    left: 78%;
    top: 0;
    width: 2px;
    height: 70%;
    --duration: 12s;
    --delay: 1.2s;
    --drift: 20px;
    background: linear-gradient(180deg, rgba(255, 215, 0, 0.18) 0%, rgba(212, 175, 55, 0.08) 50%, transparent 100%);
}
.line-7 {
    left: 88%;
    top: 0;
    width: 1px;
    height: 45%;
    --duration: 9s;
    --delay: 2.5s;
    --drift: -25px;
}
.line-8 {
    left: 5%;
    top: 0;
    width: 1px;
    height: 80%;
    --duration: 13s;
    --delay: 0.6s;
    --drift: 10px;
}

@keyframes spotLight {
    0%, 100% { opacity: 0.9; }
    50% { opacity: 1; }
}

/* 聚光灯光柱 - 增强 */
.intro-beam-core {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 100%;
    background: radial-gradient(
        ellipse 100% 100% at 50% 0%,
        rgba(255, 255, 255, 0.6) 0%,
        rgba(255, 248, 220, 0.4) 20%,
        rgba(255, 248, 220, 0.2) 45%,
        rgba(212, 175, 55, 0.08) 70%,
        transparent 100%
    );
    z-index: 4;
    animation: beamShine 2.5s ease-in-out infinite;
}

@keyframes beamShine {
    0%, 100% {
        opacity: 0.8;
        filter: blur(25px);
    }
    50% {
        opacity: 1;
        filter: blur(15px);
    }
}

/* 聚光灯光源点 - 增强 */
.intro-light-source {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 150px;
    background: radial-gradient(
        ellipse at top center,
        rgba(255, 255, 255, 1) 0%,
        rgba(255, 255, 255, 0.9) 10%,
        rgba(255, 248, 220, 0.7) 25%,
        rgba(255, 248, 220, 0.4) 45%,
        transparent 65%
    );
    z-index: 5;
    filter: blur(8px);
    animation: lightFlicker 1.5s ease-in-out infinite;
}

@keyframes lightFlicker {
    0%, 100% { opacity: 0.95; }
    50% { opacity: 1; }
}

/* 边缘闪烁粒子 - 自然随机闪烁 */
.intro-particles {
    position: absolute;
    inset: 0;
    z-index: 6;
    pointer-events: none;
    overflow: hidden;
}

.sparkle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: #ffd700;
    border-radius: 50%;
    opacity: 0;
    box-shadow: 
        0 0 4px 1px rgba(255, 215, 0, 0.9),
        0 0 8px 2px rgba(255, 200, 0, 0.6);
    animation: sparkleAnim var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes sparkleAnim {
    0%, 100% {
        opacity: 0;
        transform: scale(0.3);
    }
    10% {
        opacity: 1;
        transform: scale(1);
    }
    15% {
        opacity: 0.4;
        transform: scale(0.6);
    }
    20% {
        opacity: 0.9;
        transform: scale(1.1);
    }
    25% {
        opacity: 0.3;
        transform: scale(0.5);
    }
    30% {
        opacity: 1;
        transform: scale(1);
    }
    80% {
        opacity: 0.8;
        transform: scale(1);
    }
    90% {
        opacity: 0.2;
        transform: scale(0.6);
    }
    95% {
        opacity: 0.7;
        transform: scale(0.9);
    }
}

/* 上边缘粒子 */
.sparkle.top-left { top: 8%; left: 10%; --duration: 4s; --delay: 0.3s; }
.sparkle.top-right { top: 12%; right: 8%; --duration: 5s; --delay: 1.2s; }
.sparkle.top-center-left { top: 5%; left: 28%; --duration: 3.5s; --delay: 0.8s; }
.sparkle.top-center-right { top: 10%; right: 25%; --duration: 4.5s; --delay: 2.1s; }
.sparkle.top-far-left { top: 15%; left: 5%; --duration: 6s; --delay: 0.5s; }
.sparkle.top-far-right { top: 18%; right: 12%; --duration: 3.8s; --delay: 1.8s; }

/* 左右边缘粒子 */
.sparkle.left-top { top: 22%; left: 6%; --duration: 5.5s; --delay: 0.9s; }
.sparkle.left-center { top: 48%; left: 4%; --duration: 4.2s; --delay: 2.5s; }
.sparkle.left-bottom { top: 72%; left: 8%; --duration: 3.9s; --delay: 1.1s; }
.sparkle.right-top { top: 28%; right: 5%; --duration: 4.8s; --delay: 0.4s; }
.sparkle.right-center { top: 52%; right: 7%; --duration: 5.2s; --delay: 1.6s; }
.sparkle.right-bottom { top: 68%; right: 4%; --duration: 4s; --delay: 2.8s; }

/* 下边缘粒子 */
.sparkle.bottom-left { bottom: 18%; left: 15%; --duration: 3.6s; --delay: 0.7s; }
.sparkle.bottom-right { bottom: 22%; right: 18%; --duration: 5.8s; --delay: 1.4s; }
.sparkle.bottom-center-left { bottom: 12%; left: 35%; --duration: 4.3s; --delay: 2.2s; }
.sparkle.bottom-center-right { bottom: 15%; right: 30%; --duration: 3.7s; --delay: 0.2s; }

/* 四角粒子 */
.sparkle.corner-tl { top: 20%; left: 3%; --duration: 6.5s; --delay: 1.9s; }
.sparkle.corner-tr { top: 25%; right: 3%; --duration: 4.7s; --delay: 0.6s; }
.sparkle.corner-bl { bottom: 28%; left: 5%; --duration: 5.3s; --delay: 2.4s; }
.sparkle.corner-br { bottom: 25%; right: 6%; --duration: 3.4s; --delay: 1.7s; }

/* 偶尔闪亮的大粒子 */
.sparkle.glint {
    width: 5px;
    height: 5px;
    box-shadow: 
        0 0 8px 2px rgba(255, 215, 0, 1),
        0 0 16px 4px rgba(255, 200, 0, 0.7),
        0 0 24px 6px rgba(212, 175, 55, 0.5);
}

.sparkle.glint.g1 { top: 14%; left: 20%; --duration: 7s; --delay: 3s; }
.sparkle.glint.g2 { top: 35%; right: 10%; --duration: 8s; --delay: 5s; }
.sparkle.glint.g3 { bottom: 20%; left: 8%; --duration: 6s; --delay: 4s; }
.sparkle.glint.g4 { top: 60%; left: 12%; --duration: 9s; --delay: 6s; }
.sparkle.glint.g5 { bottom: 35%; right: 15%; --duration: 7.5s; --delay: 2s; }

/* 主容器 */
.intro-main-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    position: relative;
    z-index: 100000;
    width: 95%;
    max-width: 1200px;
    min-height: 100vh;
    padding: 10vh 0;
}

/* Logo 容器 - 细腻自然的出现动画 */
.intro-kc-logo {
    opacity: 0;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.2) translateY(30px);
    animation: logoReveal 4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    animation-delay: 1.8s;
}

@keyframes logoReveal {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.2) translateY(30px);
        filter: blur(10px);
    }
    30% {
        opacity: 0.5;
        filter: blur(5px);
    }
    55% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(0);
    }
    75% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(-30vh);
    }
    100% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(-30vh);
    }
}

.intro-kc-logo img {
    width: 260px;
    height: 260px;
    object-fit: contain;
    filter: drop-shadow(0 0 40px rgba(212, 175, 55, 0.8))
            drop-shadow(0 0 80px rgba(212, 175, 55, 0.5));
    animation: logoGlow 2s ease-in-out infinite;
    animation-delay: 4s;
}

@keyframes logoGlow {
    0%, 100% {
        filter: drop-shadow(0 0 30px rgba(212, 175, 55, 0.6))
                drop-shadow(0 0 60px rgba(212, 175, 55, 0.35));
    }
    50% {
        filter: drop-shadow(0 0 45px rgba(212, 175, 55, 0.8))
                drop-shadow(0 0 90px rgba(212, 175, 55, 0.5));
    }
}

/* 品牌介绍文字区域 */
.intro-brand-section {
    width: 100%;
    max-width: 1100px;
    text-align: center;
    opacity: 0;
    z-index: 100000;
    margin-top: 18vh;
    padding: 0 40px;
}

.intro-brand-section * {
    pointer-events: auto;
}

.intro-brand-title {
    font-family: 'Noto Serif SC', 'STSong', 'SimSun', serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 40px 0;
    padding: 0;
    letter-spacing: 0.25em;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
    min-height: 3.5rem;
    text-align: center;
    line-height: 1.8;
}

.intro-brand-text {
    max-width: 1000px;
    margin: 0 auto;
    line-height: 2.4;
    text-align: left;
}

.intro-text-line {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 25px 0;
}

.intro-text-line strong,
.line-2-bold {
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

/* 进入网站按钮 */
.intro-enter-btn {
    display: inline-block;
    margin-top: 50px;
    padding: 16px 50px;
    font-size: 1.1rem;
    letter-spacing: 0.15em;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    pointer-events: auto;
    z-index: 100001;
}

.intro-enter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.intro-enter-btn.visible {
    opacity: 1;
    transform: translateY(0);
}

.intro-enter-btn:hover {
    background: #009380;
    border-color: #009380;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 147, 128, 0.3),
                0 0 20px rgba(0, 147, 128, 0.2);
}

.intro-enter-btn:hover::before {
    left: 100%;
}

.intro-enter-btn:active {
    transform: translateY(-1px);
}
    letter-spacing: 0.05em;
    min-height: 2.4em;
    position: relative;
    display: block;
    text-align: justify;
}

.intro-text-line::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 1.2em;
    background: var(--primary);
    animation: cursorBlink 0.8s ease infinite;
}

.intro-text-line.typing-done::after {
    animation: cursorFade 0.5s ease forwards;
}

@keyframes cursorFade {
    to { opacity: 0; }
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ===================== HERO SECTION ===================== */

/* 品牌介绍文字区域 - 响应式 */
@media (max-width: 768px) {
    .intro-brand-section {
        padding: 0 20px;
    }
    
    .intro-brand-title {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .intro-text-line {
        font-size: 0.9rem;
        line-height: 2;
    }
    
    .intro-kc-logo {
        flex-shrink: 0;
    }

    .intro-kc-logo img {
        width: 140px !important;
        height: 140px !important;
    }
}

@media (max-width: 480px) {
    .intro-brand-title {
        font-size: 1.2rem;
        letter-spacing: 0.2em;
    }
    
    .intro-text-line {
        font-size: 0.8rem;
        letter-spacing: 0.05em;
    }
    
    .intro-kc-logo img {
        width: 110px !important;
        height: 110px !important;
    }
}

/* ===================== FULLSCREEN MENU ===================== */
.fullscreen-menu {
    position: fixed;
    inset: 0;
    z-index: 9999;
    visibility: hidden;
}

.fullscreen-menu.active {
    visibility: visible;
}

.menu-overlay {
    position: absolute;
    inset: 0;
    background: #0c0b09;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.fullscreen-menu.active .menu-overlay {
    opacity: 1;
}

.menu-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 40px;
}

.menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.menu-logo img {
    height: 40px;
    width: auto;
}

.menu-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.menu-logo a {
    text-decoration: none;
    color: inherit;
}

.menu-logo-slogan {
    font-size: 1rem;
    color: var(--primary);
    letter-spacing: 0.12em;
    margin-left: 12px;
    padding-left: 12px;
    border-left: 1px solid rgba(0, 147, 128, 0.4);
    line-height: 1;
    text-decoration: none !important;
    display: inline-block;
}

.menu-logo-slogan-img {
    height: 28px;
    margin-left: 12px;
    vertical-align: middle;
}

.menu-logo-slogan:hover {
    text-decoration: none !important;
    color: var(--primary);
}

.menu-logo-slogan:visited,
.menu-logo-slogan:active,
.menu-logo-slogan:link {
    color: var(--primary);
    text-decoration: none;
}

.menu-close {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.menu-close:hover {
    background: rgba(0, 147, 128, 0.2);
    border-color: var(--primary);
}

.menu-close span {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 2px;
    background: #ffffff;
}

.menu-close span:first-child {
    transform: translate(-50%, -50%) rotate(45deg);
}

.menu-close span:last-child {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.menu-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 30px;
}

.menu-nav-main {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-nav-group,
.menu-nav-item:not(.menu-nav-group > .menu-nav-item) {
    flex-shrink: 0;
}

.menu-nav-group {
    display: flex;
    flex-direction: column;
}

.menu-nav-group > .menu-nav-item {
    flex-shrink: 0;
}

.menu-nav-bottom {
    flex-shrink: 0;
}

.menu-nav-item {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding: 8px 0;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateX(-30px);
}

.fullscreen-menu.active .menu-nav-item {
    opacity: 1;
    transform: translateX(0);
}

.fullscreen-menu.active .menu-nav-item:nth-child(1) { transition-delay: 0.1s; }
.fullscreen-menu.active .menu-nav-item:nth-child(2) { transition-delay: 0.15s; }
.fullscreen-menu.active .menu-nav-item:nth-child(3) { transition-delay: 0.2s; }
.fullscreen-menu.active .menu-nav-item:nth-child(4) { transition-delay: 0.25s; }
.fullscreen-menu.active .menu-nav-item:nth-child(5) { transition-delay: 0.3s; }

.menu-nav-item:hover {
    padding-left: 20px;
    border-color: var(--primary);
}

.menu-nav-num {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.75rem;
    color: var(--primary);
    letter-spacing: 0.1em;
}

.menu-nav-text {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

.menu-nav-item:hover .menu-nav-text {
    color: var(--primary);
}

.menu-nav-en {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    color: #9a9a9a;
    letter-spacing: 0.1em;
    margin-left: auto;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.menu-nav-item:hover .menu-nav-en {
    opacity: 1;
    transform: translateX(0);
}

.menu-nav-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
}

.menu-actions {
    display: flex;
    gap: 16px;
}

.menu-action-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #e8dfd0;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.menu-action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 147, 128, 0.1);
}

.menu-action-btn i {
    font-size: 1rem;
}

.menu-action-btn .cart-count {
    background: var(--primary);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

.menu-contact-label {
    font-size: 0.7rem;
    color: #9a9a9a;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.menu-contact-phone {
    font-family: 'Space Grotesk', monospace;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: opacity 0.3s ease;
}

.menu-contact-phone:hover {
    opacity: 0.7;
}

.menu-social {
    display: flex;
    gap: 20px;
}

.menu-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #9a9a9a;
    text-decoration: none;
    transition: all 0.3s ease;
}

.menu-social a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 147, 128, 0.1);
}

/* Menu Nav Group with Submenu */
.menu-nav-group {
    border-bottom: 1px solid var(--border);
}

.menu-nav-group > .menu-nav-item {
    border-bottom: none;
}

.menu-nav-sub {
    display: none;
    padding: 10px 0 16px 60px;
    flex-wrap: wrap;
    gap: 8px;
}

.menu-nav-sub.active {
    display: flex;
}

.menu-arrow {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.menu-nav-sub.active ~ .menu-nav-item .menu-arrow,
.menu-nav-group:has(.menu-nav-sub.active) .menu-arrow {
    transform: rotate(180deg);
    color: var(--primary);
}

.menu-sub-item {
    padding: 12px 24px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.menu-sub-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 147, 128, 0.1);
}

/* ===================== CART SIDEBAR ===================== */
.cart-sidebar {
    position: fixed;
    inset: 0;
    z-index: 10001;
    visibility: hidden;
}

.cart-sidebar.active {
    visibility: visible;
}

.cart-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.cart-sidebar.active .cart-overlay {
    opacity: 1;
}

.cart-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(420px, 100vw);
    background: #141310;
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active .cart-panel {
    transform: translateX(0);
}

.cart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.cart-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cart-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.cart-count-badge {
    display: inline-flex;
    align-items: center;
    height: 22px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

.cart-close {
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.cart-close:hover {
    border-color: var(--primary);
}

.cart-close span {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 16px;
    height: 1px;
    background: var(--text-warm);
}

.cart-close span:first-child {
    transform: translate(-50%, -50%) rotate(45deg);
}

.cart-close span:last-child {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.cart-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--text-secondary);
}

.cart-empty i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
}

.cart-empty p {
    font-size: 1rem;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cart-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.cart-item:hover {
    border-color: rgba(0, 147, 128, 0.55);
    transform: translateY(-1px);
}

.cart-item-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.cart-item-meta {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.cart-item-price {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 600;
}

.cart-item-qty {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

.qty-btn {
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-warm);
    cursor: pointer;
    transition: all 0.3s ease;
}

.qty-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.cart-item-remove {
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.3s ease;
}

.cart-item-remove:hover {
    color: #e74c3c;
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
}

.cart-footer-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.cart-total span:first-child {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.cart-checkout {
    width: 100%;
    padding: 16px;
    background: var(--gradient-gold);
    border: none;
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cart-viewcart {
    width: 100%;
    padding: 14px 16px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-warm);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}

.cart-viewcart:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 147, 128, 0.08);
}

.cart-checkout:hover {
    box-shadow: 0 10px 30px var(--primary-glow);
}

/* ===================== CART ===================== */


@media (max-width: 991px) {
    .menu-container {
        padding: 0 30px;
    }
    
    .menu-header {
        height: 70px;
    }
    
    .menu-logo img {
        height: 36px;
    }
    
    .menu-nav {
        justify-content: flex-start;
        padding-top: 20px;
    }
    
    .menu-nav-main {
        gap: 4px;
    }
    
    .menu-nav-text {
        font-size: 1.2rem;
    }
    
    .menu-nav-item {
        padding: 10px 0;
        gap: 16px;
    }
    
    .menu-nav-sub {
        padding: 6px 0 10px 50px;
    }
    
    .menu-sub-item {
        padding: 8px 16px;
    }
    
    .menu-nav-bottom {
        padding: 16px 0;
    }
    
    .menu-nav-en {
        display: none;
    }
}

@media (max-width: 576px) {
    .menu-container {
        padding: 0 20px;
    }
    
    .menu-header {
        height: 60px;
    }
    
    .menu-logo img {
        height: 28px;
    }
    
    .menu-nav {
        justify-content: flex-start;
        padding-top: 15px;
    }
    
    .menu-nav-main {
        gap: 2px;
    }
    
    .menu-nav-text {
        font-size: 1.1rem;
    }
    
    .menu-nav-item {
        padding: 8px 0;
        gap: 12px;
    }
    
    .menu-nav-sub {
        padding: 4px 0 8px 40px;
        gap: 6px;
    }
    
    .menu-sub-item {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .menu-nav-bottom {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
        padding: 12px 0;
    }
}

/* ===================== MAIN HEADER ===================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 24px 0;
    transition: all 0.4s ease;
}

.main-header.scrolled {
    padding: 16px 0;
    background: rgba(12, 11, 9, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.header-container {
    width: 100%;
    padding: 0 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo img {
    height: 40px;
    width: auto;
    transition: height 0.3s ease;
}

.header-logo-slogan {
    font-size: 1rem;
    color: var(--primary);
    letter-spacing: 0.12em;
    margin-left: 12px;
    padding-left: 12px;
    border-left: 1px solid rgba(0, 147, 128, 0.3);
    line-height: 1;
    text-decoration: none !important;
    display: inline-block;
}

.header-logo-slogan-img {
    height: 28px;
    margin-left: 12px;
    vertical-align: middle;
}

.header-logo-divider {
    display: inline-block;
    width: 1px;
    height: 32px;
    background-color: var(--primary);
    opacity: 0.4;
    margin-left: 12px;
    vertical-align: middle;
}

.header-logo-slogan:hover {
    text-decoration: none !important;
    color: var(--primary-dark);
}

.header-logo-slogan:visited,
.header-logo-slogan:active,
.header-logo-slogan:link {
    color: var(--primary);
    text-decoration: none;
}

.main-header.scrolled .header-logo img {
    height: 32px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-icon-btn {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-warm);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 12px;
}

.header-icon-btn:last-child {
    margin-right: 0;
}

.header-icon-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.header-icon-btn i {
    font-size: 1rem;
}

.icon-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--primary);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 600;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 内页图标按钮样式 */
body:not(.is-intro) .header-icon-btn {
    border-color: rgba(255, 255, 255, 0.25);
    color: #e8dfd0;
}

body:not(.is-intro) .header-icon-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 147, 128, 0.1);
}

.header-menu-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    cursor: pointer;
    padding: 10px 16px;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.header-menu-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.header-menu-btn:hover .menu-line {
    background: #ffffff;
}

.header-menu-btn:hover .menu-text {
    color: #ffffff;
}

.header-menu-btn.active {
    background: var(--primary);
    border-color: var(--primary);
}

.header-menu-btn.active .menu-line:first-child {
    transform: rotate(45deg) translate(4px, 4px);
}

.header-menu-btn.active .menu-line:last-child {
    transform: rotate(-45deg) translate(4px, -4px);
}

.menu-line {
    width: 20px;
    height: 2px;
    background: #e8dfd0;
    transition: all 0.3s ease;
}

.header-menu-btn:hover .menu-line {
    width: 24px;
}

.menu-text {
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: #e8dfd0;
}

.header-menu-btn:hover .menu-text {
    color: #ffffff;
}

/* ===================== MAIN HEADER ===================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 24px 0;
    transition: all 0.4s ease;
    /* 首页默认透明 */
    background: transparent;
}

/* 内页导航栏深色背景 */
body:not(.is-intro) .main-header {
    background: rgba(12, 11, 9, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

body:not(.is-intro) .main-header .header-logo-slogan {
    color: var(--primary);
}

body:not(.is-intro) .main-header .menu-text {
    color: #e8dfd0;
}

body:not(.is-intro) .main-header .menu-line {
    background: #e8dfd0;
}

.main-header.scrolled {
    padding: 16px 0;
    background: rgba(12, 11, 9, 0.98) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.main-header.scrolled .header-logo-slogan {
    color: var(--primary) !important;
}

.main-header.scrolled .menu-text {
    color: #e8dfd0 !important;
}

.main-header.scrolled .menu-line {
    background: #e8dfd0 !important;
}

@media (max-width: 991px) {
    .header-container {
        padding: 0 30px;
    }
}

@media (max-width: 576px) {
    .header-container {
        padding: 0 16px;
    }
    
    .menu-text {
        display: none;
    }
    
    .header-icon-btn {
        width: 38px;
        height: 38px;
        margin-right: 8px;
    }
}

/* ===================== HERO SECTION ===================== */
#hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #000;
}

#heroVideo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.2);
    z-index: 2;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 2.5s;
}

.hero-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
}

.hero-play-btn .video-btn {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.hero-play-btn .video-btn::before,
.hero-play-btn .video-btn::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    animation: pulse-ring 2s ease-out infinite;
}

.hero-play-btn .video-btn::after {
    animation-delay: 1s;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.8);
        opacity: 0;
    }
}

.hero-play-btn .video-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

.hero-play-btn .video-btn i {
    font-size: 24px;
    color: #fff;
    margin-left: 4px;
}

.hero-scroll-indicator span {
    font-size: 0.6rem;
    letter-spacing: 0.3em;
    color: var(--primary);
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0% { top: -100%; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

/* Light beam effect - Golden glow */
.light-beam {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 800px;
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.08) 0%, transparent 100%);
    transform: rotate(-15deg);
    z-index: 1;
    animation: beamMove 8s ease-in-out infinite;
}

.light-beam-2 {
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 200px;
    height: 600px;
    background: linear-gradient(0deg, rgba(212, 175, 55, 0.05) 0%, transparent 100%);
    transform: rotate(10deg);
    z-index: 1;
    animation: beamMove 10s ease-in-out infinite reverse;
}

@keyframes beamMove {
    0%, 100% { opacity: 0.4; transform: rotate(-15deg) translateX(0); }
    50% { opacity: 0.8; transform: rotate(-15deg) translateX(50px); }
}

/* ===================== SECTION COMMON ===================== */
/* 通用样式已移至 base.css */

/* ===================== HERO SECTION ===================== */
#hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #000;
}

/* ===================== SCENE / 场景应用 SECTION ===================== */
#scene {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
}

/* ===================== BRANDS / 热门产品 SECTION ===================== */
#brands {
    background: var(--bg-primary);
    padding: var(--section-padding) 0;
}

#brands .section-header {
    margin-bottom: var(--spacing-lg);
}

/* ===================== ABOUT SECTION ===================== */
#about {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
}

#about .section-title {
    text-align: center;
}

#about .section-desc {
    text-align: justify;
    text-justify: inter-ideograph;
}

/* ===================== GALLERY SECTION ===================== */
#gallery {
    background: var(--bg-primary);
    padding: var(--section-padding) 0;
    overflow: hidden;
}

/* ===================== DEALERS SECTION ===================== */
#dealers {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
}

/* ===================== VIDEO SECTION ===================== */
#video {
    background: var(--bg-primary);
    padding: var(--section-padding) 0;
}

/* 电脑端限制两行 */
.knowledge-desc {
    width: 700px;
    max-width: 100%;
}

/* ===================== COLUMN SECTION ===================== */
#column {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
}

/* ===================== FEATURES SECTION ===================== */
#features {
    background: var(--bg-primary);
    padding: var(--section-padding) 0;
    overflow: hidden;
}

/* Features主视觉轮播 */
.features-hero-slider {
    position: relative;
    margin-top: 40px;
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
}

.features-hero-track {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    min-height: 320px;
}

.features-hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.7s ease-in-out;
    pointer-events: none;
}

.features-hero-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.features-hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.6s ease, transform 0.8s ease;
}

.features-hero-slide.active:hover img {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.03);
}

.features-hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 50%;
    background: rgba(12, 11, 9, 0.35);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: all 0.3s ease;
}

.features-hero-arrow:hover {
    background: rgba(0, 147, 128, 0.88);
    border-color: rgba(0, 147, 128, 0.88);
}

.features-hero-prev {
    left: 16px;
}

.features-hero-next {
    right: 16px;
}

.features-hero-dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.features-hero-dot {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transition: all 0.3s ease;
}

.features-hero-dot.active,
.features-hero-dot:hover {
    background: var(--primary);
    transform: scale(1.15);
}

/* ===================== CONTACT SECTION ===================== */
#contact {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
    position: relative;
    overflow: hidden;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/5;
    border-radius: var(--radius-lg);
}

.about-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) brightness(0.8);
    transition: all 0.8s ease;
}

.about-image-wrap:hover img {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.05);
}

.about-image-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--primary);
    opacity: 0.3;
    pointer-events: none;
    border-radius: var(--radius-lg);
}

.about-image-accent {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    border: 1px solid var(--primary);
    opacity: 0.15;
    z-index: -1;
    border-radius: var(--radius-md);
}

/* 关于我们轮播样式 */
.about-slider-wrap {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 680px;
    margin: 0 60px;
}

.about-slider {
    position: relative;
    height: 100%;
    min-height: 500px;
}

.about-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.about-slide.active {
    opacity: 1;
}

.about-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 内容面板 */
.about-content-panel {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.about-content-inner {
    color: #fff;
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 40px;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--primary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0;
    font-weight: 500;
    white-space: nowrap;
}

.about-main-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0;
    color: #fff;
    line-height: 1.4;
    white-space: nowrap;
}

.mission-list {
    display: flex;
    flex-direction: row;
    gap: 30px;
    flex-wrap: wrap;
    flex: 1;
}

.mission-text-item {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.mission-text-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 2px;
    background: var(--primary);
}

.mission-text-item i {
    display: none;
}

/* 左右箭头 */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-arrow:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.slider-prev {
    left: 15px;
}

.slider-next {
    right: 15px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    transition: all 0.4s ease;
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.stat-item:hover {
    border-color: var(--primary);
    background: var(--gold-muted);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.1);
}

.stat-number-wrap {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
}

.stat-number {
    font-family: 'Space Grotesk', 'Segoe UI', 'Microsoft YaHei', monospace;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-unit {
    font-family: 'Space Grotesk', 'Segoe UI', 'Microsoft YaHei', monospace;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: var(--text-warm);
    text-transform: uppercase;
    margin-top: var(--spacing-xs);
}

.stat-unit {
    font-size: 1.6rem;
    margin-left: 2px;
}

/* ===================== PRODUCTS SECTION ===================== */
#products {
    background: var(--bg-secondary);
}

.products-header {
    text-align: center;
    margin-bottom: 50px;
}

.products-header .section-desc {
    margin: 0 auto;
}

.product-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: pointer;
}

.product-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(80%);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover img {
    filter: grayscale(0%);
    transform: scale(1.1);
}

.product-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(12, 11, 9, 0.95) 0%, rgba(12, 11, 9, 0.2) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    transition: all 0.4s ease;
}

.product-card:hover .product-card-overlay {
    background: linear-gradient(to top, rgba(12, 11, 9, 0.98) 0%, rgba(12, 11, 9, 0.4) 70%, rgba(212, 175, 55, 0.05) 100%);
}

.product-number {
    font-family: 'Space Grotesk', 'Segoe UI', 'Microsoft YaHei', monospace;
    font-size: 0.7rem;
    color: var(--primary);
    letter-spacing: 0.25em;
    margin-bottom: 6px;
    opacity: 0.8;
}

.product-name {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 4px;
    transform: translateY(10px);
    transition: transform 0.4s ease;
}

.product-card:hover .product-name { 
    transform: translateY(0); 
    color: var(--gold-light);
}

.product-desc {
    font-size: 0.8rem;
    color: var(--text-warm);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s ease 0.1s;
}

.product-card:hover .product-desc {
    opacity: 1;
    transform: translateY(0);
}

.product-shine {
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
    transform: skewX(-20deg);
    transition: left 0.8s ease;
    pointer-events: none;
}

.product-card:hover .product-shine { left: 125%; }

/* ===================== FEATURES SECTION ===================== */
#features {
    background: var(--bg-secondary);
    overflow: hidden;
    padding: var(--section-padding) 0;
}

.features-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: stretch;
}

.features-layout > div:first-child {
    display: flex;
    flex-direction: column;
}

.features-layout > div:first-child .section-desc {
    flex: 1;
    min-height: 3em;
}

.features-layout > div:first-child > div:last-child {
    margin-top: auto;
}

.features-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.feature-item:hover::before { transform: scaleX(1); }
.feature-item:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-image {
    width: 100%;
    height: 160px;
    overflow: hidden;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.feature-item:hover .feature-image img {
    transform: scale(1.05);
}

.feature-content {
    padding: 16px;
    flex: 1;
}

.feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    color: var(--primary);
    font-size: 1.2rem;
    background: linear-gradient(135deg, rgba(0, 147, 128, 0.1), rgba(0, 147, 128, 0.05));
    border-radius: 50%;
}
    background: var(--primary-muted);
    border-radius: var(--radius-sm);
}

.feature-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: #1a1a1a;
    margin-bottom: 8px;
    font-weight: 600;
}

.feature-highlight {
    font-family: 'Space Grotesk', monospace;
    font-size: 1rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-text {
    font-size: 0.82rem;
    color: #5a6a7a;
    line-height: 1.6;
    margin-bottom: 8px;
}

.feature-text:last-child {
    margin-bottom: 0;
}

/* ===================== GALLERY SECTION ===================== */
#gallery {
    background: #ffffff;
    padding: var(--section-padding) 0;
    overflow: hidden;
}

.gallery-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.gallery-scroll-wrapper {
    overflow: hidden;
    width: 100%;
    padding: 20px 0;
}

.gallery-track {
    display: flex;
    gap: 20px;
    width: max-content;
}

.gallery-section-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.gallery-item {
    flex-shrink: 0;
    width: 380px;
    height: 480px;
    overflow: hidden;
    position: relative;
    border-radius: var(--radius-md);
}

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

.gallery-item:hover img { transform: scale(1.08); }

.gallery-item-label {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: var(--font-md);
    color: #fff;
    background: rgba(0, 147, 128, 0.78);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}

/* ===================== DEALERS / 全国服务网络 ===================== */
.dealers-section {
    background: var(--bg-primary);
    padding: 0;
    position: relative;
}

.dealers-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.dealers-header .section-eyebrow {
    color: var(--primary);
}

.dealers-header .section-title {
    color: var(--text-primary);
    margin-top: 10px;
}

.dealers-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 8px;
    letter-spacing: 2px;
}

.dealers-header .divider-line {
    margin-top: var(--spacing-sm);
}

/* 数据统计区 */
.dealers-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.dealer-stat-item {
    text-align: center;
    padding: 35px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.dealer-stat-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
    border-color: var(--border-light);
}

.dealer-stat-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.dealer-stat-number {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    display: inline;
}

.dealer-stat-unit {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: inline;
}

.dealer-stat-label {
    margin-top: var(--spacing-sm);
    font-size: var(--font-sm);
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* 描述文字 */
.dealers-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    font-size: var(--font-base);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 服务流程 */
.dealers-flow {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    padding-bottom: var(--spacing-xs);
}

.dealer-flow-item {
    flex: 1;
    min-width: 160px;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.dealer-flow-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
    border-color: var(--border-light);
}

.dealer-flow-num {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.dealer-flow-icon {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.dealer-flow-title {
    font-size: var(--font-md);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.dealer-flow-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.dealer-flow-arrow {
    display: flex;
    align-items: center;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
    opacity: 0.6;
    padding-top: 50px;
}

/* 底部按钮 */
.dealers-footer {
    text-align: center;
}

/* ===================== VIDEO GALLERY / 视频专区 ===================== */
.video-section {
    background: var(--bg-secondary);
    padding: var(--section-padding) 0;
}

#video > .section-wrapper {
    max-width: none !important;
    padding: 0 !important;
    width: 100% !important;
}

.video-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: 0 clamp(20px, 5vw, 60px);
}

.video-header .section-eyebrow {
    color: var(--primary);
}

.video-header .section-title {
    color: var(--text-primary);
    margin-top: 10px;
}

.video-header .divider-line {
    margin-top: var(--spacing-sm);
}

/* 视频展示区 - 全宽横排 */
.video-showcase {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
    max-width: 100%;
}

.video-player-wrap {
    position: relative;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 9 / 16;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* 视频自动适应横版和竖版 */
.video-player-wrap .video-el,
.video-player-wrap video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 特色封面样式 */
.video-featured-cover {
    position: absolute;
    inset: 0;
    cursor: pointer;
}

.video-featured-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-featured-cover:hover img {
    transform: scale(1.02);
}

.video-featured-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(12, 11, 9, 0.1) 0%,
        rgba(12, 11, 9, 0.3) 50%,
        rgba(12, 11, 9, 0.6) 100%
    );
}

.video-featured-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.video-play-btn-main {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ffffff;
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.5);
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-play-btn-main:hover {
    transform: scale(1.1);
    background: var(--primary);
    box-shadow: 0 0 60px rgba(212, 175, 55, 0.7);
}

.video-play-btn-main i {
    margin-left: 4px;
}

.video-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    cursor: pointer;
    transition: background 0.3s ease;
}

.video-placeholder:hover {
    background: linear-gradient(135deg, var(--bg-card-hover) 0%, var(--bg-warm) 100%);
}

.video-placeholder:hover .video-play-btn {
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--primary-glow);
}

.video-placeholder-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.video-play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #ffffff;
    box-shadow: 0 0 20px var(--primary-glow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-placeholder-text {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    letter-spacing: 1px;
}

.video-el {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.video-main-info {
    margin-top: var(--spacing-sm);
    padding: 0 4px;
}

.video-main-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.video-main-desc {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 视频缩略图列表 */
.video-thumb-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 480px;
    overflow-y: auto;
    padding-right: 4px;
}

.video-thumb-list::-webkit-scrollbar {
    width: 4px;
}

.video-thumb-list::-webkit-scrollbar-track {
    background: var(--bg-card);
    border-radius: 2px;
}

.video-thumb-list::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 2px;
    opacity: 0.5;
}

.video-thumb-item {
    cursor: pointer;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: all 0.3s ease;
    padding: 0;
}

.video-thumb-item:hover {
    border-color: var(--border-light);
    transform: none;
}

.video-thumb-item.active {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.15);
}

.video-thumb-inner {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px;
}

.video-thumb-cover {
    flex-shrink: 0;
    width: 120px;
    height: 68px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.video-thumb-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-thumb-item:hover .video-thumb-cover img {
    transform: scale(1.1);
}

.video-thumb-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    background: rgba(212, 175, 55, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-thumb-item:hover .video-thumb-play,
.video-thumb-item.active .video-thumb-play {
    opacity: 1;
}

.video-thumb-play i {
    margin-left: 2px;
}

.video-thumb-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.video-thumb-title {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.video-thumb-item:hover .video-thumb-title,
.video-thumb-item.active .video-thumb-title {
    color: var(--gold-light);
}

.video-thumb-duration {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
}

/* ===================== TESTIMONIALS ===================== */
#testimonials {
    background: var(--bg-primary);
}

.testimonials-header {
    text-align: center;
    margin-bottom: 50px;
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
    flex-shrink: 0;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    padding: 0 30px;
}

.testimonial-image {
    aspect-ratio: 1;
    overflow: hidden;
}

.testimonial-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
}

.testimonial-quote {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 1.35rem;
    font-style: italic;
    line-height: 1.65;
    color: var(--text-warm);
    margin-bottom: 24px;
    position: relative;
    padding-left: 24px;
}

.testimonial-quote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 0;
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.4;
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
}

.testimonial-author {
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--primary);
}

.testimonial-controls {
    display: flex;
    gap: 10px;
    margin-top: 40px;
}

.testimonial-dot {
    width: 30px;
    height: 2px;
    background: var(--border-light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.testimonial-dot.active {
    background: var(--gradient-gold);
    width: 50px;
}

/* ===================== CONTACT SECTION ===================== */
#contact {
    background: #ffffff;
    position: relative;
    overflow: hidden;
    padding: 100px 0;
}

.cta-bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 15vw;
    font-weight: 900;
    color: rgba(0, 147, 128, 0.03);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
}

.contact-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.contact-header .section-eyebrow {
    color: var(--primary);
}

.contact-header .section-title {
    color: var(--text-primary);
}

.contact-header .section-title em {
    color: var(--primary);
}

.contact-header .section-desc {
    margin-top: var(--spacing-sm);
    font-size: var(--font-base);
    color: var(--text-secondary);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-card {
    background: #f8fafa;
    border: 1px solid rgba(0, 147, 128, 0.15);
    padding: var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    border-radius: var(--radius-md);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 147, 128, 0.1);
}

.contact-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--primary);
    border-radius: 50%;
    font-size: 1.2rem;
    color: #fff;
    position: relative;
    overflow: hidden;
    background: var(--primary);
}

.contact-card-icon i {
    position: relative;
    z-index: 1;
}

.contact-card-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(255,255,255,0.4) 50%,
        transparent 60%
    );
    animation: cardShine 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes cardShine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.contact-card-label {
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.contact-card-value {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 500;
}

.contact-card-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.contact-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

/* ===================== BUTTON STYLES ===================== */
/* 通用按钮样式已移至 base.css */

.contact-cta-line {
    flex: 1;
    max-width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.contact-cta .btn-primary-custom {
    padding: 18px 50px;
    background: var(--primary);
    color: #ffffff;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(0, 147, 128, 0.3);
}

.contact-cta .btn-primary-custom:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 147, 128, 0.4);
}

.contact-cta .btn-primary-custom i {
    margin-right: 10px;
}

/* Responsive */
@media (max-width: 992px) {
    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .contact-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-cta {
        flex-direction: column;
        gap: 20px;
    }
    
    .contact-cta-line {
        width: 100%;
        max-width: none;
    }
}

/* ===================== FOOTER ===================== */
footer {
    background: #1a1a1a;
}

.footer-main {
    padding: 60px 40px 40px;
    border-top: 1px solid rgba(0, 147, 128, 0.3);
    position: relative;
}

.footer-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr;
    gap: 30px;
}

/* 品牌区域 */
.footer-brand-col {
    padding-right: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.footer-logo img {
    height: 44px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-logo-text {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 1.3rem;
    color: var(--primary);
    letter-spacing: 0.1em;
}

.footer-brand-desc {
    font-size: 0.85rem;
    color: #e0e0e0;
    line-height: 1.7;
    opacity: 0.8;
    margin-bottom: 24px;
}

.footer-brand-slogan {
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 20px;
    font-weight: 500;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 147, 128, 0.4);
    color: var(--primary);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background: rgba(0, 147, 128, 0.1);
}

.social-link:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 147, 128, 0.3);
}

/* 链接列 */
.footer-links-col {
    padding-top: 8px;
}

.footer-links-col .footer-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(0, 147, 128, 0.2);
}

.footer-links-col .footer-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-links-col .footer-links a {
    display: block;
    font-size: 0.85rem;
    color: #e0e0e0;
    text-decoration: none;
    padding: 6px 0;
    transition: all 0.3s ease;
    opacity: 0.8;
    position: relative;
}

.footer-links-col .footer-links a::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 50%;
    width: 0;
    height: 1px;
    background: var(--primary);
    transition: all 0.3s ease;
    transform: translateY(-50%);
}

.footer-links-col .footer-links a:hover {
    color: var(--primary);
    opacity: 1;
    padding-left: 20px;
}

.footer-links-col .footer-links a:hover::before {
    width: 12px;
    left: 0;
}

/* 联系信息 */
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.contact-item > i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 147, 128, 0.15);
    border: 1px solid rgba(0, 147, 128, 0.3);
    color: var(--primary);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.contact-item > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: rgba(0, 147, 128, 0.8);
    text-transform: uppercase;
}

.contact-item > div > a,
.contact-item > div > span {
    font-size: 0.85rem;
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item > div > a:hover {
    color: var(--primary);
}

/* 二维码区域 */
.footer-qrcode {
    display: flex;
    gap: 16px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 147, 128, 0.2);
}

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

.qrcode-box {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 147, 128, 0.1);
    border: 1px solid rgba(0, 147, 128, 0.3);
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.qrcode-item span {
    font-size: 0.75rem;
    color: #a0a0a0;
}

/* 品牌标语 */
.footer-tagline {
    text-align: center;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 147, 128, 0.2);
    position: relative;
}

.footer-tagline::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-tagline span {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 1rem;
    font-style: italic;
    color: #e0e0e0;
    letter-spacing: 0.1em;
    opacity: 0.7;
}

/* 底部栏 */
.footer-bottom {
    padding: 24px 0;
    background: #111111;
}

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

.footer-copy {
    font-size: 0.75rem;
    color: #a0a0a0;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom-links a {
    font-size: 0.75rem;
    color: #a0a0a0;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-bottom-links .divider {
    color: #666;
    font-size: 0.75rem;
}

/* 响应式 */
@media (max-width: 1400px) {
    .footer-grid {
        grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 40px;
    }
    
    .footer-brand-col {
        grid-column: 1 / -1;
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    .footer-main {
        padding: 40px 0 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }

    .footer-brand-col {
        grid-column: auto;
        text-align: center;
        padding-bottom: 20px;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-brand-desc,
    .footer-social {
        display: none;
    }

    .footer-links-col {
        text-align: center;
        padding: 15px 0;
        border-top: 1px solid rgba(255, 215, 0, 0.1);
        display: none;
    }

    .footer-links-col:first-of-type {
        border-top: none;
        padding-top: 0;
    }

    .footer-contact {
        display: none;
    }

    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .contact-item i {
        margin-bottom: 8px;
    }

    .footer-bottom-inner {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        font-size: 0.8rem;
    }

    .footer-tagline {
        display: none;
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px;
        font-size: 0.7rem;
    }

    .footer-bottom-links .divider {
        display: none;
    }

    .footer-copy {
        font-size: 0.7rem;
    }

    .footer-qrcode {
        justify-content: center;
    }
}

/* ===================== MARQUEE SECTION ===================== */
.brand-marquee {
    padding: 40px 0;
    background: linear-gradient(180deg, #000 0%, var(--bg-primary) 50%, #000 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.marquee-track {
    display: flex;
    gap: 60px;
    animation: marquee 20s linear infinite;
    width: max-content;
}

.marquee-item {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    font-size: 1rem;
    color: var(--primary);
    white-space: nowrap;
    letter-spacing: 0.08em;
    opacity: 0.3;
}

.marquee-sep {
    color: var(--primary);
    opacity: 0.15;
    margin: 0 20px;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===================== UTILITY ===================== */
/* 通用动画样式已移至 base.css */

/* ===================== RESPONSIVE ===================== */
/* 响应式样式已移至 base.css */

/* ===================== SCROLL ANIMATIONS ===================== */
/* 滚动动画样式已移至 base.css */

/* ===================== FLOATING BUTTONS ===================== */
.floating-buttons {
    position: fixed;
    right: 30px;
    bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 998;
}

.floating-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #009380;
    color: #ffffff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.4s ease;
    position: relative;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 147, 128, 0.3);
}

.floating-btn:hover {
    background: #009380;
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 147, 128, 0.5);
}

.floating-btn i,
.floating-btn .fas,
.floating-btn .far,
.floating-btn .fab {
    color: #ffffff !important;
}

.floating-btn:hover i,
.floating-btn:hover .fas,
.floating-btn:hover .far,
.floating-btn:hover .fab {
    color: #ffffff !important;
}

.floating-btn-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #e74c3c;
    color: #fff;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===================== SCROLL TOP BUTTON ===================== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border: none;
    border-radius: 50%;
    color: #ffffff;
    font-size: 1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s ease;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.5);
}

@media (max-width: 576px) {
    .scroll-top-btn {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* ===================== SCROLL PROGRESS BAR ===================== */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: var(--gradient-gold);
    z-index: 10000;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--primary);
}

/* ===================== CURSOR TRAIL ===================== */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 147, 128, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease, opacity 0.3s ease;
}

/* ===================== 增强移动端响应式样式 ===================== */

/* Hero视频响应式 */
@media (max-width: 992px) {
    #heroVideo {
        object-position: center center;
    }

    #hero {
        min-height: 600px;
    }
}

@media (max-width: 768px) {
    #hero {
        min-height: 500px;
    }

    #heroVideo {
        object-position: center center;
    }

    .hero-overlay {
        background: rgba(0,0,0,0.2);
    }
}

@media (max-width: 576px) {
    #hero {
        min-height: 400px;
        height: 60vh;
        position: relative;
    }

    #heroVideo {
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        object-position: center center !important;
        transform: none !important;
        min-width: unset !important;
        min-height: unset !important;
    }

    .hero-overlay {
        background: rgba(0,0,0,0.2);
    }
}

/* About区域响应式 */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-grid > div:last-child {
        order: -1;
    }

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

@media (max-width: 576px) {
    .about-grid {
        gap: var(--spacing-md);
    }

    .about-image-wrap {
        max-width: 100%;
    }

    .about-image-accent {
        display: none;
    }

    .stats-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        text-align: left;
        padding: var(--spacing-sm);
    }

    .stat-number {
        font-size: 2rem;
        min-width: 70px;
    }

    .stat-label {
        margin-top: 0;
        font-size: 0.75rem;
    }
}

/* Products区域响应式 */
@media (max-width: 992px) {
    .products-header {
        margin-bottom: 40px;
    }
}

/* Features区域响应式 */
@media (max-width: 992px) {
    .features-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .features-list {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
}

@media (max-width: 576px) {
    .features-list {
        grid-template-columns: 1fr;
    }
}

/* Gallery区域响应式 */
@media (max-width: 992px) {
    #gallery {
        padding: var(--section-padding-md) 0;
    }

    .gallery-item {
        width: 300px;
        height: 400px;
    }
}

@media (max-width: 576px) {
    #gallery {
        padding: var(--section-padding-sm) 0;
    }

    .gallery-item {
        width: 260px;
        height: 340px;
    }

    .gallery-item-label {
        font-size: var(--font-sm);
        padding: 6px 12px;
    }
}

/* Testimonials响应式 */
@media (max-width: 992px) {
    .testimonial-card {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0;
    }
}

@media (max-width: 576px) {
    .testimonial-quote {
        font-size: 1.1rem;
        padding-left: 20px;
    }

    .testimonial-quote::before {
        font-size: 2.5rem;
    }

    .testimonial-image {
        max-width: 200px;
        margin: 0 auto;
    }

    .testimonial-controls {
        justify-content: center;
        margin-top: 30px;
    }
}

/* Contact区域响应式 */
@media (max-width: 992px) {
    #contact {
        padding: var(--section-padding-md) 0;
    }

    .contact-header {
        margin-bottom: var(--spacing-lg);
    }

    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    #contact {
        padding: var(--section-padding-sm) 0;
    }

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

    .contact-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .contact-cta-line {
        width: 100%;
        max-width: none;
    }

    .cta-bg-text {
        font-size: 20vw;
    }
}

/* Footer响应式增强 */
@media (max-width: 992px) {
    .footer-main {
        padding: 40px 0 30px;
    }
}

@media (max-width: 576px) {
    .footer-main {
        padding: 30px 0 20px;
    }

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

    .footer-logo {
        justify-content: center;
    }

    .footer-brand-desc {
        display: none;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links-col {
        border-top: 1px solid rgba(212, 175, 55, 0.1);
        padding: 20px 0;
    }

    .footer-links-col:first-of-type {
        border-top: none;
        padding-top: 0;
    }

    .footer-contact {
        display: none;
    }

    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .contact-item i {
        margin-bottom: 8px;
    }

    .footer-bottom-inner {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .footer-tagline {
        display: none;
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .footer-bottom-links .divider {
        display: none;
    }

    .footer-copy {
        font-size: 0.7rem;
    }

    .footer-qrcode {
        justify-content: center;
    }
}

/* 热门产品滚动区域响应式 */
@media (max-width: 992px) {
    .hot-products-fullwidth {
        padding: 0 24px;
    }

    .hot-products-track {
        padding-left: 0;
    }
}

@media (max-width: 576px) {
    .hot-products-fullwidth {
        padding: 0 16px;
    }

    .hot-product-card {
        flex: 0 0 240px;
    }
}

/* 场景卡片响应式 */
@media (max-width: 992px) {
    .scene-card {
        aspect-ratio: 3/2;
    }
}

@media (max-width: 576px) {
    .scene-card {
        aspect-ratio: 4/3;
    }

    .scene-card-name {
        font-size: 1.1rem;
    }

    .scene-card-overlay {
        padding: 16px;
    }

    .scene-card-arrow {
        top: 16px;
        right: 16px;
    }
}

/* 专栏卡片响应式 */
@media (max-width: 992px) {
    .column-full-card {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}

/* 关于我们轮播响应式 */
@media (max-width: 992px) {
    .about-slider-wrap {
        min-height: auto;
        margin: 0 24px;
        grid-template-rows: auto auto;
    }

    .about-slider {
        min-height: auto;
        aspect-ratio: 3/4;
    }

    .about-slide img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
}

@media (max-width: 576px) {
    .about-slider-wrap {
        margin: 0 16px;
    }

    .about-slider {
        aspect-ratio: 3/4;
    }

    .about-slide {
        position: absolute;
        inset: 0;
    }

    .about-slide img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .about-content-panel {
        padding: 20px 16px;
    }
}

@media (max-width: 576px) {
    .column-full-content {
        padding: 16px;
    }

    .column-full-title {
        font-size: 1rem;
    }

    .column-full-excerpt {
        font-size: 0.8rem;
    }
}

/* 品牌卡片响应式 */
@media (max-width: 992px) {
    .brand-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 24px;
    }

    .brand-card:nth-child(even) {
        direction: ltr;
    }
}

@media (max-width: 576px) {
    .brand-card {
        padding: 20px;
    }

    .brand-card-title {
        font-size: 1.4rem;
    }

    .brand-card-desc {
        font-size: 0.9rem;
    }

    .brand-card-number {
        font-size: 3rem;
    }
}

/* Marquee响应式 */
@media (max-width: 576px) {
    .brand-marquee {
        padding: 30px 0;
    }

    .marquee-item {
        font-size: 0.85rem;
    }
}

/* 滚动到顶部按钮增强 */
@media (max-width: 576px) {
    .scroll-top-btn {
        bottom: 20px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

/* 开场动画低高度桌面端优化 */
@media (min-width: 769px) and (max-height: 750px) {
    .intro-main-container {
        justify-content: flex-start;
        padding: 6vh 0 4vh;
        gap: 24px;
    }

    .intro-kc-logo {
        animation-name: logoRevealCompact;
    }

    .intro-kc-logo img {
        width: 190px;
        height: 190px;
    }

    .intro-brand-section {
        margin-top: 28vh;
        padding: 0 56px;
    }

    .intro-brand-title {
        font-size: 2rem;
        margin-bottom: 24px;
        line-height: 1.5;
    }

    .intro-text-line {
        font-size: 1rem;
        margin-bottom: 18px;
        line-height: 2;
    }

    .intro-enter-btn {
        margin-top: 30px;
        padding: 14px 42px;
    }
}

@keyframes logoRevealCompact {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.2) translateY(30px);
        filter: blur(10px);
    }
    30% {
        opacity: 0.5;
        filter: blur(5px);
    }
    55% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(0);
    }
    75% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(-22vh);
    }
    100% {
        opacity: 1;
        filter: blur(0);
        transform: translate(-50%, -50%) scale(1) translateY(-22vh);
    }
}

/* 开场动画响应式增强 */
@media (max-width: 576px) {
    .intro-kc-logo img {
        width: 90px;
        height: 90px;
    }
    
    .intro-brand-title {
        font-size: 1rem;
        letter-spacing: 0.15em;
    }
    
    .intro-text-line {
        font-size: 0.75rem;
        line-height: 1.8;
    }
}

/* 解决方案区域响应式 */
@media (max-width: 992px) {
    .solution-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .solution-image-accent {
        display: none;
    }
}

/* 产品网格响应式 */
@media (max-width: 576px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-card {
        aspect-ratio: 1/1.3;
    }
}

/* 品牌价值响应式 */
@media (max-width: 992px) {
    .brand-values {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 576px) {
    .brand-values {
        grid-template-columns: 1fr;
    }
}

/* 技术网格响应式 */
@media (max-width: 992px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

/* CTA区域响应式 */
@media (max-width: 576px) {
    .cta-section {
        padding: 50px 16px;
    }

    .cta-content h2 {
        font-size: 1.5rem;
    }

    .cta-content p {
        font-size: 0.9rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* 特色卡片响应式 */
@media (max-width: 576px) {
    .feature-card {
        padding: 20px;
    }

    .feature-card-icon {
        width: 56px;
        height: 56px;
        font-size: 1.4rem;
    }
}

/* Timeline响应式 */
@media (max-width: 992px) {
    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        left: 0;
        text-align: left;
    }

    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 12px;
        right: auto;
    }
}

@media (max-width: 576px) {
    .timeline {
        margin: 40px 0 0;
    }

    .timeline-year {
        font-size: 1.2rem;
    }

    .timeline-content {
        padding: 16px;
    }

    .timeline-content h4 {
        font-size: 1rem;
    }
}

/* 关于简介响应式 */
@media (max-width: 992px) {
    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .about-intro-content h2 {
        font-size: 1.5rem;
    }

    .about-intro-content p {
        font-size: 0.95rem;
    }
}

/* 品牌使命响应式 */
@media (max-width: 576px) {
    .brand-mission {
        padding: 16px;
    }

    .mission-item {
        font-size: 0.9rem;
    }
}

/* 表单响应式优化 */
@media (max-width: 576px) {
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 16px; /* 防止iOS自动缩放 */
    }

    .form-group textarea {
        min-height: 120px;
    }
}

/* 筛选按钮响应式 */
@media (max-width: 576px) {
    .filter-buttons {
        gap: 8px;
    }

    .filter-btn,
    .filter-tab {
        padding: 10px 16px;
        font-size: 0.8rem;
    }
}

/* 页面Hero响应式 */
@media (max-width: 576px) {
    .page-hero {
        padding: 120px 0 50px;
    }

    .page-hero .page-title {
        font-size: clamp(1.8rem, 6vw, 2.2rem);
    }

    .page-hero .page-subtitle {
        font-size: 0.9rem;
    }
}

/* 加载更多按钮 */
@media (max-width: 576px) {
    .load-more-btn,
    .btn-load-more {
        width: 100%;
        max-width: 280px;
    }
}

/* 全国服务网络响应式 */
@media (max-width: 992px) {
    .dealers-section {
        padding: var(--section-padding-md) 0;
    }

    .dealers-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    .dealers-flow {
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-lg);
    }

    .dealer-flow-item {
        min-width: 140px;
        padding: var(--spacing-sm);
    }

    .dealer-flow-icon {
        font-size: 1.8rem;
    }

    .dealer-stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .dealers-section {
        padding: var(--section-padding-sm) 0;
    }

    .dealers-header {
        margin-bottom: var(--spacing-lg);
    }

    .dealers-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }

    .dealer-stat-item {
        padding: var(--spacing-md) var(--spacing-sm);
    }

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

    .dealer-stat-icon {
        font-size: 1.6rem;
    }

    .dealers-desc {
        margin-bottom: var(--spacing-lg);
        font-size: var(--font-sm);
    }

    .dealers-flow {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .dealer-flow-item {
        width: 100%;
        max-width: 320px;
        min-width: unset;
        padding: var(--spacing-sm);
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .dealer-flow-num {
        display: none;
    }

    .dealer-flow-icon {
        font-size: 1.6rem;
        margin-bottom: 10px;
    }

    .dealer-flow-arrow {
        display: none;
    }
}

/* 视频专区响应式 */
@media (max-width: 992px) {
    .video-section {
        padding: var(--section-padding-md) 0;
    }

    .video-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .video-thumb-list {
        flex-direction: row;
        max-height: unset;
        overflow-x: auto;
        overflow-y: hidden;
        padding-bottom: 8px;
        gap: 12px;
    }

    .video-thumb-item {
        flex-shrink: 0;
        width: 200px;
    }

    .video-thumb-item:hover {
        transform: none;
    }

    .video-thumb-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px;
    }

    .video-thumb-cover {
        width: 100%;
        height: 100px;
    }
}

@media (max-width: 576px) {
    .video-section {
        padding: var(--section-padding-sm) 0;
    }

    .video-header {
        margin-bottom: var(--spacing-md);
    }

    .video-play-btn-main {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }

    .video-thumb-item {
        width: 160px;
    }

    .video-thumb-cover {
        height: 80px;
    }

    .video-thumb-title {
        font-size: 0.8rem;
        -webkit-line-clamp: 1;
    }
}

/* 竖屏视频卡片展示 - 一排横排 */
.video-showcase {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
}

.video-card {
    cursor: pointer;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.4s ease;
}

.video-card:hover {
    border-color: var(--gold);
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(212, 175, 55, 0.15);
}

.video-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 16;
    overflow: hidden;
}

.video-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(15%);
    transition: transform 0.4s ease, filter 0.4s ease;
}

.video-card:hover .video-card-cover img {
    transform: scale(1.06);
    filter: grayscale(0%);
}

.video-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.video-card:hover .video-card-overlay {
    opacity: 1;
    background: linear-gradient(135deg, rgba(212,175,55,0.25) 0%, rgba(0,0,0,0.35) 100%);
}

.video-card-play {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1rem;
    box-shadow: 0 0 24px rgba(212, 175, 55, 0.5), 0 0 48px rgba(212, 175, 55, 0.2);
    transform: scale(0.9);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover .video-card-play {
    transform: scale(1);
    box-shadow: 0 0 32px rgba(212, 175, 55, 0.6), 0 0 64px rgba(212, 175, 55, 0.25);
}

.video-card-play i {
    margin-left: 3px;
}

.video-card-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
}

.video-card-info {
    padding: var(--spacing-sm);
}

.video-card-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.3s ease;
}

.video-card:hover .video-card-title {
    color: var(--gold);
}

/* 视频弹窗 */
.video-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.video-modal.active {
    display: flex;
}

.video-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
}

.video-modal-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.video-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: background 0.3s ease;
}

.video-modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

.video-modal-player {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 16;
    background: #000;
}

.video-modal-player video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-modal-title {
    padding: var(--spacing-sm);
    font-size: 1rem;
    color: var(--text-primary);
}

/* 响应式 - 竖屏视频卡片 */
@media (max-width: 1200px) {
    .video-showcase {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .video-showcase {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
}

@media (max-width: 576px) {
    .video-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .video-modal-content {
        width: 95%;
    }
}