/* ==================== CSS 变量 ==================== */
:root {
    --bg-primary: #121212;
    --bg-secondary: #161616;
    --bg-card: #171717;
    --bg-card-hover: #1a1a1a;
    --text-primary: #F0E8D8;
    --text-secondary: rgba(240, 232, 216, 0.65);
    --text-muted: rgba(240, 232, 216, 0.45);
    --accent-gold: #B8A068;
    --accent-gold-light: #C9B889;
    --accent-gold-dark: #8A7550;
    --border-color: rgba(184, 160, 104, 0.25);
    --border-subtle: #333333;
    --border-subtle-light: rgba(51, 51, 51, 0.8);
    --gradient-gold: linear-gradient(135deg, #A08A5C 0%, #B8A068 50%, #A08A5C 100%);
    --gradient-dark: linear-gradient(180deg, #121212 0%, #161616 100%);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ==================== 重置样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Serif SC', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

/* ==================== 背景层 ==================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.bg-gradient-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(184, 160, 104, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(184, 160, 104, 0.02) 0%, transparent 40%),
        linear-gradient(180deg, #121212 0%, #101010 100%);
    z-index: 1;
    pointer-events: none;
}

.texture-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    z-index: 2;
    pointer-events: none;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 100;
    background: #121212;
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1920px;
    height: 100%;
    margin: 0 auto;
    padding: 0 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.nav-menu ul {
    display: flex;
    gap: 48px;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 400;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
}

.nav-menu a.active::after,
.nav-menu a:hover::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gold-dark);
    border-radius: 1px;
}

.btn-download {
    padding: 10px 28px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 3px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.btn-download:hover {
    background: var(--accent-gold);
    color: var(--bg-primary);
    border-color: var(--accent-gold);
}

/* ==================== Banner 首屏 ==================== */
.banner {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    z-index: 10;
    background: url('baner.png') center center / cover no-repeat;
}

.banner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 18, 18, 0.55);
    z-index: -1;
}

.banner-content {
    max-width: 1920px;
    width: 100%;
    margin: 0 auto;
    padding: 0 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 80px;
}

.banner-text {
    flex: 1;
    max-width: 780px;
}

.banner-title {
    font-size: 72px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 32px;
    letter-spacing: -1px;
}

.title-line {
    display: block;
    color: var(--text-primary);
}

.title-accent {
    display: block;
    font-size: 56px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 8px;
    letter-spacing: 2px;
}

.banner-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 640px;
}

.banner-actions {
    display: flex;
    gap: 24px;
}

.btn-primary {
    padding: 16px 48px;
    background: var(--accent-gold);
    color: var(--bg-primary);
    font-size: 16px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    border: none;
}

.btn-primary:hover {
    background: var(--accent-gold-dark);
    color: var(--bg-primary);
}

.btn-secondary {
    padding: 16px 48px;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.3s ease;
    letter-spacing: 2px;
}

.btn-secondary:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.banner-visual {
    flex: 0 0 500px;
    height: 500px;
    position: relative;
}

.cube-container {
    position: relative;
    width: 100%;
    height: 100%;
    perspective: 1000px;
}

.cube {
    position: absolute;
    border: 1px solid var(--border-subtle);
    background: rgba(30, 30, 30, 0.35);
}

.cube-1 {
    width: 280px;
    height: 280px;
    top: 60px;
    right: 40px;
    transform: rotate(15deg);
    animation: float1 8s ease-in-out infinite;
}

.cube-2 {
    width: 180px;
    height: 180px;
    top: 180px;
    right: 200px;
    transform: rotate(-10deg);
    animation: float2 6s ease-in-out infinite;
    animation-delay: 1s;
}

.cube-3 {
    width: 120px;
    height: 120px;
    bottom: 60px;
    right: 80px;
    transform: rotate(25deg);
    animation: float3 7s ease-in-out infinite;
    animation-delay: 2s;
}

.cube::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(51, 51, 51, 0.15) 0%, transparent 60%);
    opacity: 0.3;
}

@keyframes float1 {
    0%, 100% { transform: rotate(15deg) translateY(0); }
    50% { transform: rotate(15deg) translateY(-20px); }
}

@keyframes float2 {
    0%, 100% { transform: rotate(-10deg) translateY(0); }
    50% { transform: rotate(-10deg) translateY(-15px); }
}

@keyframes float3 {
    0%, 100% { transform: rotate(25deg) translateY(0); }
    50% { transform: rotate(25deg) translateY(-10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0.5;
}

.scroll-indicator span {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent, var(--accent-gold-dark));
    animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-indicator p {
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--text-muted);
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ==================== 通用 Section 样式 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-label {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--accent-gold);
    margin-bottom: 16px;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.section-line {
    width: 60px;
    height: 2px;
    background: var(--accent-gold-dark);
    margin: 0 auto;
}

.section-desc {
    max-width: 720px;
    margin: 24px auto 0;
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 品牌优势 ==================== */
.advantages {
    position: relative;
    padding: 120px 60px;
    z-index: 10;
}

.advantages-grid {
    max-width: 1920px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.advantage-card {
    position: relative;
    height: 420px;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

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

.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

.card-blue {
    background: linear-gradient(180deg, #171717 0%, #141414 100%);
    border: 1px solid var(--border-subtle);
}

.card-security {
    background: linear-gradient(180deg, #161616 0%, #131313 100%);
    border: 1px solid var(--border-subtle);
}

.card-resource {
    background: linear-gradient(180deg, #151515 0%, #121212 100%);
    border: 1px solid var(--border-subtle);
}

.particle-bg {
    background: 
        linear-gradient(135deg, rgba(51, 51, 51, 0.6) 0%, transparent 50%),
        linear-gradient(45deg, rgba(184, 160, 104, 0.04) 0%, transparent 50%);
}

.metallic-bg {
    background: 
        linear-gradient(135deg, rgba(51, 51, 51, 0.5) 0%, transparent 50%),
        linear-gradient(45deg, rgba(51, 51, 51, 0.3) 0%, transparent 50%);
}

.crystal-bg {
    background: 
        linear-gradient(135deg, rgba(51, 51, 51, 0.5) 0%, transparent 60%),
        radial-gradient(circle at 50% 50%, rgba(184, 160, 104, 0.04) 0%, transparent 60%);
}

.card-content {
    position: relative;
    z-index: 2;
    padding: 48px 40px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-icon {
    width: 64px;
    height: 64px;
    color: var(--accent-gold);
    margin-bottom: 24px;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.card-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 全链路业务 ==================== */
.business {
    position: relative;
    padding: 120px 60px;
    background: rgba(13, 13, 13, 0.5);
    z-index: 10;
}

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

.business-grid {
    max-width: 1920px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.business-card {
    position: relative;
    height: 480px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    transition: all 0.4s ease;
}

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

.business-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    opacity: 0.35;
}

.gradient-pink-blue {
    background: linear-gradient(180deg, rgba(51, 51, 51, 0.8) 0%, transparent 100%);
}

.gradient-teal-bubble {
    background: linear-gradient(180deg, rgba(51, 51, 51, 0.7) 0%, transparent 100%);
}

.gradient-orange-red {
    background: linear-gradient(180deg, rgba(51, 51, 51, 0.75) 0%, transparent 100%);
}

.gradient-purple-gold {
    background: linear-gradient(180deg, rgba(184, 160, 104, 0.06) 0%, transparent 100%);
}

.business-content {
    position: relative;
    z-index: 2;
    padding: 40px 32px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.business-num {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 72px;
    font-weight: 900;
    color: rgba(51, 51, 51, 0.5);
    line-height: 1;
}

.business-icon {
    width: 120px;
    height: 120px;
    color: var(--accent-gold);
    margin-bottom: auto;
    margin-top: 48px;
    align-self: center;
    opacity: 0.85;
    transition: all 0.4s ease;
}

.business-card:hover .business-icon {
    opacity: 1;
    transform: scale(1.08);
}

.business-icon svg {
    width: 100%;
    height: 100%;
}

.business-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.business-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 藏品展示 ==================== */
.collection {
    position: relative;
    padding: 120px 60px;
    z-index: 10;
}

.collection-grid {
    max-width: 1920px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.collection-card {
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    transition: all 0.4s ease;
}

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

.collection-img {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
}

.collection-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

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

.img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 60%, rgba(18, 18, 18, 0.8) 100%);
}

.collection-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--border-subtle);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    border-radius: 3px;
    letter-spacing: 1px;
}

.collection-info {
    padding: 24px 20px;
}

.collection-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.collection-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 技术实力 ==================== */
.technology {
    position: relative;
    padding: 120px 60px;
    background: rgba(13, 13, 13, 0.5);
    z-index: 10;
    overflow: hidden;
}

.tech-bg-deco {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(51, 51, 51, 0.3) 0%, transparent 70%);
    opacity: 0.4;
}

.tech-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    position: relative;
    z-index: 2;
}

.tech-item {
    text-align: center;
    padding: 48px 32px;
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 32px;
    color: var(--accent-gold);
}

.tech-icon svg {
    width: 100%;
    height: 100%;
}

.tech-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.tech-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 320px;
    margin: 0 auto;
}

/* ==================== 创作者生态 ==================== */
.creator {
    position: relative;
    padding: 120px 60px;
    z-index: 10;
    overflow: hidden;
}

.creator-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(51, 51, 51, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(184, 160, 104, 0.02) 0%, transparent 40%);
}

.creator-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.light-label {
    color: var(--accent-gold-dark);
}

.creator-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.creator-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 64px;
}

.contact-list {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
}

.contact-item {
    padding: 0 48px;
}

.contact-label {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.contact-email {
    font-size: 22px;
    font-weight: 600;
    color: var(--accent-gold);
    transition: color 0.3s ease;
}

.contact-email:hover {
    color: var(--accent-gold-light);
}

.contact-divider {
    width: 1px;
    height: 60px;
    background: var(--border-subtle);
}

/* ==================== 页脚 ==================== */
.footer {
    position: relative;
    background: #0a0a0a;
    border-top: 1px solid var(--border-subtle);
    z-index: 10;
}

.footer-container {
    max-width: 1920px;
    margin: 0 auto;
    padding: 80px 60px 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--border-subtle);
}

.footer-brand {
    padding-right: 40px;
}

.footer-logo {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
}

.footer-slogan {
    font-size: 16px;
    color: var(--accent-gold-dark);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.footer-slogan-cn {
    font-size: 14px;
    color: var(--text-muted);
}

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

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--accent-gold-light);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 6px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--border-subtle);
    color: var(--text-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 0;
}

.footer-copy p {
    font-size: 13px;
    color: var(--text-muted);
}

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

.footer-policy a {
    font-size: 13px;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

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

.footer-policy span {
    color: var(--border-subtle);
}

/* ==================== 响应式调整 ==================== */
@media (max-width: 1600px) {
    .banner-title {
        font-size: 56px;
    }
    
    .title-accent {
        font-size: 44px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .business-grid,
    .collection-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1280px) {
    .banner-content {
        flex-direction: column;
        text-align: center;
    }
    
    .banner-visual {
        display: none;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    
    .advantage-card {
        height: 360px;
    }
    
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .collection-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
}

@media (max-width: 960px) {
    .nav-menu ul {
        gap: 24px;
    }
    
    .banner-title {
        font-size: 40px;
    }
    
    .title-accent {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .collection-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-list {
        flex-direction: column;
        gap: 32px;
    }
    
    .contact-divider {
        width: 60px;
        height: 1px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== 汉堡菜单按钮 ==================== */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 110;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-mobile-actions {
    display: none;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    margin-top: 16px;
}

.btn-download-mobile {
    width: 100%;
}

/* ==================== 移动端适配 (768px以下) ==================== */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-desktop {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(18, 18, 18, 0.98);
        backdrop-filter: blur(20px);
        padding: 100px 32px 32px;
        transition: right 0.3s ease;
        overflow-y: auto;
        z-index: 105;
        border-left: 1px solid var(--border-subtle);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-menu ul li {
        border-bottom: 1px solid var(--border-subtle);
    }
    
    .nav-menu a {
        display: block;
        padding: 20px 0;
        font-size: 18px;
        color: var(--text-primary);
    }
    
    .nav-menu a.active::after,
    .nav-menu a:hover::after {
        display: none;
    }
    
    .nav-menu a.active,
    .nav-menu a:hover {
        color: var(--accent-gold);
    }
    
    .nav-mobile-actions {
        display: block;
    }
    
    /* Banner区域 */
    .banner {
        min-height: auto;
        padding: 120px 20px 60px;
    }
    
    .banner-content {
        padding: 0;
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .banner-text {
        max-width: 100%;
    }
    
    .banner-title {
        font-size: 36px;
        margin-bottom: 20px;
    }
    
    .title-line {
        font-size: 32px;
    }
    
    .title-accent {
        font-size: 24px;
        margin-top: 4px;
    }
    
    .banner-subtitle {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 32px;
    }
    
    .banner-actions {
        flex-direction: column;
        gap: 16px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
        padding: 14px 32px;
        font-size: 15px;
    }
    
    .banner-visual {
        display: none;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    /* 通用Section样式 */
    .advantages,
    .business,
    .collection,
    .technology,
    .creator {
        padding: 60px 20px;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .section-label {
        font-size: 12px;
        letter-spacing: 3px;
    }
    
    .section-title {
        font-size: 32px;
        margin-bottom: 16px;
        letter-spacing: 1px;
    }
    
    .section-line {
        width: 40px;
    }
    
    .section-desc {
        font-size: 14px;
        margin-top: 16px;
    }
    
    /* 品牌优势 */
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .advantage-card {
        height: auto;
        min-height: 280px;
    }
    
    .card-content {
        padding: 32px 24px;
    }
    
    .card-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 16px;
    }
    
    .card-title {
        font-size: 24px;
        margin-bottom: 12px;
    }
    
    .card-desc {
        font-size: 14px;
    }
    
    /* 全链路业务 */
    .business-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .business-card {
        height: 320px;
    }
    
    .business-content {
        padding: 32px 24px;
    }
    
    .business-num {
        font-size: 56px;
        top: 16px;
        right: 16px;
    }
    
    .business-icon {
        width: 80px;
        height: 80px;
        margin-top: 40px;
    }
    
    .business-title {
        font-size: 22px;
        margin-bottom: 12px;
    }
    
    .business-desc {
        font-size: 13px;
    }
    
    /* 藏品展示 */
    .collection-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .collection-img {
        height: 240px;
    }
    
    .collection-info {
        padding: 20px 16px;
    }
    
    .collection-title {
        font-size: 18px;
    }
    
    .collection-desc {
        font-size: 13px;
    }
    
    /* 技术实力 */
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .tech-item {
        padding: 32px 20px;
    }
    
    .tech-icon {
        width: 64px;
        height: 64px;
        margin-bottom: 24px;
    }
    
    .tech-title {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    .tech-desc {
        font-size: 13px;
    }
    
    .tech-bg-deco {
        width: 400px;
        height: 400px;
    }
    
    /* 创作者生态 */
    .creator-title {
        font-size: 36px;
        margin-bottom: 16px;
    }
    
    .creator-desc {
        font-size: 15px;
        margin-bottom: 40px;
    }
    
    .contact-list {
        flex-direction: column;
        gap: 32px;
    }
    
    .contact-item {
        padding: 0;
        text-align: center;
    }
    
    .contact-label {
        font-size: 13px;
    }
    
    .contact-email {
        font-size: 18px;
    }
    
    .contact-divider {
        width: 40px;
        height: 1px;
    }
    
    /* 页脚 */
    .footer-container {
        padding: 48px 20px 0;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
        padding-bottom: 40px;
    }
    
    .footer-brand {
        padding-right: 0;
    }
    
    .footer-logo {
        width: 40px;
        height: 40px;
        margin-bottom: 16px;
    }
    
    .footer-slogan {
        font-size: 14px;
    }
    
    .footer-slogan-cn {
        font-size: 13px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .footer-col h4 {
        font-size: 14px;
        margin-bottom: 16px;
    }
    
    .footer-col a {
        font-size: 13px;
        margin-bottom: 10px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        padding: 24px 0;
        text-align: center;
    }
    
    .footer-policy {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ==================== 小屏移动端适配 (480px以下) ==================== */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 16px;
    }
    
    .logo-img {
        width: 32px;
        height: 32px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .banner {
        padding: 100px 16px 40px;
    }
    
    .banner-title {
        font-size: 30px;
    }
    
    .title-line {
        font-size: 26px;
    }
    
    .title-accent {
        font-size: 20px;
    }
    
    .advantages,
    .business,
    .collection,
    .technology,
    .creator {
        padding: 48px 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .card-content {
        padding: 28px 20px;
    }
    
    .business-card {
        height: 280px;
    }
    
    .collection-img {
        height: 200px;
    }
    
    .creator-title {
        font-size: 30px;
    }
    
    .contact-email {
        font-size: 16px;
        word-break: break-all;
    }
    
    .footer-container {
        padding: 40px 16px 0;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-policy {
        font-size: 12px;
    }
    
    .footer-policy span {
        display: none;
    }
    
    .footer-policy a {
        padding: 4px 8px;
    }
}

/* ==================== 横屏适配 ==================== */
@media (max-height: 500px) and (orientation: landscape) {
    .banner {
        min-height: auto;
        padding: 120px 20px 40px;
    }
    
    .banner-content {
        gap: 24px;
    }
    
    .banner-title {
        font-size: 28px;
        margin-bottom: 12px;
    }
    
    .title-line {
        font-size: 24px;
    }
    
    .title-accent {
        font-size: 18px;
    }
    
    .banner-subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }
}

/* ==================== 触摸设备优化 ==================== */
@media (hover: none) {
    .advantage-card:hover,
    .business-card:hover,
    .collection-card:hover {
        transform: none;
    }
    
    .btn-primary:hover,
    .btn-secondary:hover,
    .btn-download:hover {
        transform: none;
        box-shadow: none;
    }
    
    .social-link:hover {
        background: var(--bg-card);
        color: var(--text-secondary);
    }
    
    .nav-menu a:hover,
    .footer-col a:hover,
    .footer-policy a:hover {
        color: var(--text-secondary);
    }
}

/* ==================== 减少动画偏好 ==================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .cube,
    .scroll-indicator span {
        animation: none;
    }
}