/* 
 * 糖心vlog - 甜蜜星球主题
 * 原创设计 - 独特视觉风格
 * 配色：樱花粉+薰衣草紫+星空渐变
 */

/* ========== CSS Reset ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ========== 原创配色变量 ========== */
:root {
    /* 主色调 - 甜蜜糖果系 */
    --candy-pink: #FFB6C1;
    --lavender: #E6E6FA;
    --peach: #FFCC99;
    --mint: #98FF98;
    
    /* 星空背景色 */
    --space-purple: #2D1B4E;
    --space-blue: #1A1A3E;
    --starlight: #FFD700;
    
    /* 文字色 */
    --text-light: #FFFFFF;
    --text-soft: rgba(255,255,255,0.85);
    --text-muted: rgba(255,255,255,0.6);
    --text-dark: #2D1B4E;
    
    /* 毛玻璃效果 */
    --glass-bg: rgba(255,255,255,0.1);
    --glass-border: rgba(255,255,255,0.2);
    
    /* 阴影 */
    --glow-pink: 0 0 30px rgba(255,182,193,0.4);
    --glow-gold: 0 0 20px rgba(255,215,0,0.3);
    --shadow-soft: 0 10px 40px rgba(0,0,0,0.3);
    
    /* 圆角 */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --radius-xl: 50px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 基础样式 ========== */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--space-purple) 0%, var(--space-blue) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* 星空背景动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, white, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, white, transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.9), transparent),
        radial-gradient(1px 1px at 230px 80px, white, transparent),
        radial-gradient(2px 2px at 300px 150px, rgba(255,255,255,0.7), transparent);
    background-size: 350px 200px;
    animation: twinkle 8s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

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

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

/* ========== 容器 ========== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 原创悬浮导航栏 ========== */
.nav-float {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 1200px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 12px 30px;
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-float.scrolled {
    background: rgba(45,27,78,0.95);
    box-shadow: var(--shadow-soft);
}

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

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

.logo-wrap img {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 0 10px rgba(255,182,193,0.5));
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--candy-pink), var(--lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    display: block;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-soft);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    opacity: 0;
    transition: var(--transition-fast);
    border-radius: var(--radius-lg);
    z-index: -1;
}

.nav-links a:hover::before,
.nav-links a.active::before {
    opacity: 1;
}

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

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--candy-pink);
    border-radius: 3px;
    transition: var(--transition-fast);
}

/* ========== 原创斜切Hero区域 ========== */
.hero-diagonal {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-diagonal::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: linear-gradient(135deg, rgba(255,182,193,0.15), rgba(230,230,250,0.1));
    transform: rotate(-15deg);
    border-radius: 100px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-text {
    padding-right: 40px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    color: var(--starlight);
    margin-bottom: 24px;
}

.hero-badge::before {
    content: '★';
    animation: pulse-star 2s infinite;
}

@keyframes pulse-star {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--candy-pink), var(--starlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-soft);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero-tag {
    background: rgba(255,182,193,0.2);
    border: 1px solid rgba(255,182,193,0.3);
    padding: 8px 18px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--candy-pink);
}

.hero-search {
    display: flex;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    max-width: 500px;
}

.hero-search input {
    flex: 1;
    padding: 16px 24px;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1rem;
    outline: none;
}

.hero-search input::placeholder {
    color: var(--text-muted);
}

.hero-search button {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    border: none;
    color: var(--text-dark);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.hero-search button:hover {
    filter: brightness(1.1);
}

/* Hero右侧视频展示球 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-sphere {
    position: relative;
    width: 450px;
    height: 450px;
}

.sphere-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(255,182,193,0.3);
    border-radius: 50%;
    animation: rotate-ring 20s linear infinite;
}

.sphere-ring:nth-child(1) {
    width: 100%;
    height: 100%;
}

.sphere-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    animation-direction: reverse;
    animation-duration: 15s;
}

.sphere-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    animation-duration: 25s;
}

@keyframes rotate-ring {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.sphere-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--glow-pink), var(--shadow-soft);
}

.sphere-center img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sphere-video-item {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--candy-pink);
    box-shadow: var(--glow-pink);
    transition: var(--transition-normal);
}

.sphere-video-item:hover {
    transform: scale(1.15);
    z-index: 10;
}

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

.sphere-video-item:nth-child(4) { top: 0; left: 50%; transform: translateX(-50%); }
.sphere-video-item:nth-child(5) { top: 20%; right: 0; }
.sphere-video-item:nth-child(6) { bottom: 20%; right: 0; }
.sphere-video-item:nth-child(7) { bottom: 0; left: 50%; transform: translateX(-50%); }
.sphere-video-item:nth-child(8) { bottom: 20%; left: 0; }
.sphere-video-item:nth-child(9) { top: 20%; left: 0; }

/* ========== 原创波浪分割线 ========== */
.wave-divider {
    height: 120px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120'%3E%3Cpath fill='rgba(255,182,193,0.1)' d='M0,64L48,69.3C96,75,192,85,288,80C384,75,480,53,576,48C672,43,768,53,864,64C960,75,1056,85,1152,80C1248,75,1344,53,1392,42.7L1440,32L1440,120L1392,120C1344,120,1248,120,1152,120C1056,120,960,120,864,120C768,120,672,120,576,120C480,120,384,120,288,120C192,120,96,120,48,120L0,120Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

/* ========== 原创蜂巢式视频网格 ========== */
.section {
    padding: 80px 0;
    position: relative;
}

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

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    padding: 6px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-title .brand {
    color: var(--candy-pink);
    text-shadow: 0 0 30px rgba(255,182,193,0.5);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-soft);
}

/* 蜂巢网格 */
.honeycomb-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}

.video-hex {
    width: 280px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.video-hex:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--glow-pink), var(--shadow-soft);
}

.video-hex-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-hex-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

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

/* 原创翻转播放按钮 */
.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(45,27,78,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.video-hex:hover .play-overlay {
    opacity: 1;
}

.play-btn-hex {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--candy-pink), var(--starlight));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.5) rotate(-180deg);
    transition: var(--transition-normal);
    box-shadow: var(--glow-gold);
}

.video-hex:hover .play-btn-hex {
    transform: scale(1) rotate(0deg);
}

.play-btn-hex::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid var(--space-purple);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-hex-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dark);
}

.video-hex-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.7);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
}

.video-hex-info {
    padding: 18px;
}

.video-hex-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.video-hex-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.video-hex-stats {
    display: flex;
    gap: 12px;
}

/* ========== 原创交错式服务展示 ========== */
.zigzag-section {
    padding: 60px 0;
}

.zigzag-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 50px 0;
}

.zigzag-item:nth-child(even) {
    direction: rtl;
}

.zigzag-item:nth-child(even) > * {
    direction: ltr;
}

.zigzag-visual {
    position: relative;
}

.zigzag-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.zigzag-img img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.zigzag-float {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    padding: 20px 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--glow-pink);
}

.zigzag-item:nth-child(even) .zigzag-float {
    right: auto;
    left: -20px;
}

.zigzag-float-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
}

.zigzag-float-label {
    font-size: 0.9rem;
    color: var(--space-purple);
}

.zigzag-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.zigzag-content h3 .brand {
    color: var(--candy-pink);
}

.zigzag-content p {
    font-size: 1.05rem;
    color: var(--text-soft);
    margin-bottom: 24px;
    line-height: 1.8;
}

.zigzag-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.zigzag-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 10px 18px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
}

.zigzag-feature::before {
    content: '✦';
    color: var(--starlight);
}

/* ========== 原创环形专家展示 ========== */
.expert-orbit {
    position: relative;
    padding: 100px 0;
}

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

.orbit-ring {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.expert-planet {
    width: 260px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
}

.expert-planet::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, var(--candy-pink), var(--lavender), var(--peach));
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: var(--transition-normal);
}

.expert-planet:hover::before {
    opacity: 1;
}

.expert-planet:hover {
    transform: translateY(-15px);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid var(--candy-pink);
    box-shadow: var(--glow-pink);
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.expert-role {
    font-size: 0.9rem;
    color: var(--candy-pink);
    margin-bottom: 8px;
}

.expert-cred {
    font-size: 0.8rem;
    color: var(--starlight);
    margin-bottom: 12px;
}

.expert-bio {
    font-size: 0.9rem;
    color: var(--text-soft);
    line-height: 1.6;
}

/* ========== 原创倒三角FAQ ========== */
.faq-triangle {
    padding: 80px 0;
    background: linear-gradient(180deg, transparent, rgba(255,182,193,0.05));
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--candy-pink);
}

.faq-question {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
}

.faq-question::after {
    content: '▽';
    color: var(--candy-pink);
    transition: var(--transition-fast);
}

.faq-item.open .faq-question::after {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px 20px;
    color: var(--text-soft);
    line-height: 1.8;
    display: none;
}

.faq-item.open .faq-answer {
    display: block;
}

/* ========== 原创星空页脚 ========== */
.footer-stars {
    background: linear-gradient(180deg, var(--space-blue), #0D0D1A);
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer-stars::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(1px 1px at 100px 50px, white, transparent),
        radial-gradient(1px 1px at 200px 150px, white, transparent),
        radial-gradient(2px 2px at 300px 100px, rgba(255,182,193,0.8), transparent),
        radial-gradient(1px 1px at 400px 200px, white, transparent),
        radial-gradient(2px 2px at 500px 80px, rgba(255,215,0,0.8), transparent);
    background-size: 600px 300px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    position: relative;
    z-index: 10;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 45px;
}

.footer-desc {
    font-size: 0.95rem;
    color: var(--text-soft);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.social-btn {
    width: 42px;
    height: 42px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.social-btn:hover {
    background: var(--candy-pink);
    border-color: var(--candy-pink);
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--candy-pink);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--text-soft);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--candy-pink);
    padding-left: 8px;
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    margin-top: 50px;
    padding-top: 25px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    position: relative;
    z-index: 10;
}

.footer-bottom a {
    color: var(--candy-pink);
    margin: 0 8px;
}

.footer-update {
    margin-top: 10px;
    color: var(--starlight);
}

/* ========== 面包屑导航 ========== */
.breadcrumb-nav {
    padding: 100px 0 20px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    list-style: none;
    font-size: 0.9rem;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
}

.breadcrumb-list li::after {
    content: '›';
    margin: 0 12px;
    color: var(--text-muted);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--candy-pink);
}

.breadcrumb-list a:hover {
    text-decoration: underline;
}

.breadcrumb-list .current {
    color: var(--text-muted);
}

/* ========== 页面头部 ========== */
.page-hero {
    padding: 40px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-hero h1 .brand {
    color: var(--candy-pink);
}

.page-hero p {
    font-size: 1.15rem;
    color: var(--text-soft);
}

/* ========== 标签筛选器 ========== */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    color: var(--text-soft);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    border-color: transparent;
    color: var(--text-dark);
}

/* ========== 统计数据 ========== */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    padding: 40px 0;
}

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

.stat-num {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--candy-pink), var(--starlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* ========== 功能卡片网格 ========== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 32px;
    text-align: center;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--candy-pink);
    box-shadow: var(--glow-pink);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--candy-pink), var(--peach));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-soft);
    line-height: 1.6;
}

/* ========== 联系卡片 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
}

.contact-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 28px;
    text-align: center;
    transition: var(--transition-fast);
}

.contact-card:hover {
    border-color: var(--candy-pink);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-title {
    font-weight: 600;
    margin-bottom: 10px;
}

.contact-info {
    font-size: 0.95rem;
    color: var(--text-soft);
    line-height: 1.6;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        padding-right: 0;
    }
    
    .hero-search {
        margin: 0 auto;
    }
    
    .video-sphere {
        width: 350px;
        height: 350px;
        margin: 0 auto;
    }
    
    .sphere-center {
        width: 200px;
        height: 200px;
    }
    
    .sphere-video-item {
        width: 70px;
        height: 70px;
    }
    
    .zigzag-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .zigzag-item:nth-child(even) {
        direction: ltr;
    }
    
    .zigzag-float {
        position: static;
        display: inline-block;
        margin-top: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-float {
        top: 10px;
        width: calc(100% - 24px);
        padding: 10px 20px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(45,27,78,0.98);
        flex-direction: column;
        padding: 20px;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        margin-top: 10px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .video-sphere {
        width: 280px;
        height: 280px;
    }
    
    .sphere-center {
        width: 150px;
        height: 150px;
    }
    
    .sphere-video-item {
        width: 55px;
        height: 55px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .honeycomb-grid {
        gap: 16px;
    }
    
    .video-hex {
        width: 100%;
        max-width: 350px;
    }
    
    .orbit-ring {
        gap: 20px;
    }
    
    .expert-planet {
        width: 100%;
        max-width: 280px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        padding-right: 0;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .stats-row {
        gap: 30px;
    }
    
    .stat-num {
        font-size: 2.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-diagonal {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-tags {
        justify-content: center;
    }
    
    .hero-search {
        flex-direction: column;
        border-radius: var(--radius-md);
    }
    
    .hero-search button {
        border-radius: 0 0 var(--radius-md) var(--radius-md);
    }
    
    .section {
        padding: 50px 0;
    }
    
    .filter-bar {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

/* ========== 动画效果 ========== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.float-anim {
    animation: float 6s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: var(--glow-pink); }
    50% { box-shadow: 0 0 50px rgba(255,182,193,0.6); }
}

.glow-anim {
    animation: glow-pulse 3s ease-in-out infinite;
}

/* ========== 直播标签 ========== */
.live-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #FF3B3B;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    animation: pulse-live 2s infinite;
}

@keyframes pulse-live {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ========== 工具提示 ========== */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--space-purple);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
}

.tooltip:hover::after {
    opacity: 1;
    bottom: calc(100% + 10px);
}