/* ============================================
   星耀产品展示系统 - 前台科技风样式
   Future Digital Product Showcase
   ============================================ */

/* ========== CSS Variables ========== */
:root {
    --bg-primary: #050816;
    --bg-secondary: #0a0e27;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --color-primary: #00eaff;
    --color-secondary: #7c3cff;
    --color-accent: #ff4ecd;
    --color-text: #ffffff;
    --color-text-weak: #aab3d4;
    --color-border: rgba(255, 255, 255, 0.12);
    --color-border-glow: rgba(0, 234, 255, 0.3);
    --gradient-primary: linear-gradient(135deg, #00eaff, #7c3cff);
    --gradient-accent: linear-gradient(135deg, #ff4ecd, #7c3cff);
    --gradient-card-border: linear-gradient(135deg, rgba(0,234,255,0.4), rgba(124,60,255,0.4), rgba(255,78,205,0.2));
    --shadow-glow: 0 0 30px rgba(0, 234, 255, 0.2), 0 0 60px rgba(124, 60, 255, 0.1);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    --font-en: 'Inter', 'Arial', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-cn);
    background-color: var(--bg-primary);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(0, 234, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(124, 60, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 78, 205, 0.03) 0%, transparent 60%);
    pointer-events: none;
    z-index: -2;
}

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

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Background Particles ========== */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -3;
    overflow: hidden;
}

.particles-bg .particle {
    position: absolute;
    border-radius: 50%;
    background: var(--color-primary);
    opacity: 0;
    animation: floatUp linear infinite;
}

@keyframes floatUp {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ========== Background Orbs ========== */
.bg-orb {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(0, 234, 255, 0.12);
    top: -10%;
    left: -5%;
    animation-delay: 0s;
}

.bg-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(124, 60, 255, 0.12);
    bottom: -10%;
    right: -5%;
    animation-delay: -7s;
}

.bg-orb-3 {
    width: 300px;
    height: 300px;
    background: rgba(255, 78, 205, 0.08);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 10px) scale(1.05); }
}

/* ========== Header ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 8, 22, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    display: none;
}

@media (min-width: 768px) {
    .logo-sub {
        display: block;
        font-family: var(--font-en);
        font-size: 10px;
        color: var(--color-text-weak);
        letter-spacing: 1px;
        text-transform: uppercase;
        margin-left: 4px;
        -webkit-text-fill-color: var(--color-text-weak);
    }
}

/* Main Nav */
.main-nav ul {
    display: flex;
    gap: 8px;
}

.main-nav a {
    display: block;
    padding: 8px 18px;
    color: var(--color-text-weak);
    font-size: 15px;
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Mobile Bottom Nav ========== */
.mobile-bottom-nav {
    display: none;
}

/* ========== Site Main ========== */
.site-main {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

/* ========== Hero Section ========== */
.hero-section {
    position: relative;
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 80px 0;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-family: var(--font-en);
    font-size: 13px;
    color: var(--color-text-weak);
    letter-spacing: 1px;
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--color-primary); }
    50% { opacity: 0.4; box-shadow: 0 0 12px var(--color-primary); }
}

/* Hero Title */
.hero-title {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-weak);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Buttons */
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-cn);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: 0 4px 20px rgba(0, 234, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 234, 255, 0.5);
    color: #000;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-glow:hover::before {
    opacity: 1;
}

.btn-glass {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 234, 255, 0.2);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}

/* ========== Hero Stats ========== */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-number span {
    font-size: 1.5rem;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--color-text-weak);
    margin-top: 4px;
}

/* ========== Scroll Indicator ========== */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-weak);
    font-size: 12px;
    animation: fadeIn 1s ease 1.5s both;
}

.scroll-mouse {
    width: 24px;
    height: 36px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-dot {
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollAnim 2s infinite;
}

@keyframes scrollAnim {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 22px; opacity: 0.2; }
}

/* ========== Section ========== */
.section {
    padding: 80px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 4px 16px;
    font-family: var(--font-en);
    font-size: 12px;
    color: var(--color-primary);
    letter-spacing: 3px;
    border: 1px solid rgba(0, 234, 255, 0.3);
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--color-text-weak);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-more {
    text-align: center;
    margin-top: 40px;
}

/* ========== Glass Card ========== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: var(--transition);
    position: relative;
}

.glass-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s;
}

.glass-card:hover::before {
    opacity: 1;
}

.glass-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

/* ========== Category Grid ========== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.category-card {
    text-decoration: none;
    color: var(--color-text);
}

.category-card-inner {
    background: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
}

.category-card-inner:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.category-icon {
    font-size: 28px;
    display: block;
    margin-bottom: 12px;
}

.category-card-inner h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
}

.category-card-inner p {
    font-size: 12px;
    color: var(--color-text-weak);
    line-height: 1.5;
}

/* ========== Product Grid ========== */
.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Product Card */
.product-card {
    overflow: hidden;
    padding: 0;
    display: flex;
    flex-direction: column;
}

.product-card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0,234,255,0.1), rgba(124,60,255,0.1));
}

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

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

.product-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0,234,255,0.15), rgba(124,60,255,0.15));
}

.placeholder-icon {
    font-size: 48px;
    color: rgba(255, 255, 255, 0.2);
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    font-size: 11px;
    border-radius: 50px;
    font-weight: 600;
}

.recommend-badge {
    background: var(--gradient-accent);
    color: #fff;
}

.product-category-tag {
    position: absolute;
    bottom: 12px;
    right: 12px;
    padding: 4px 12px;
    font-size: 11px;
    border-radius: 50px;
    background: rgba(0, 0, 0, 0.6);
    color: var(--color-primary);
    border: 1px solid rgba(0, 234, 255, 0.3);
}

.product-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
    line-height: 1.4;
}

.product-card-subtitle {
    font-size: 13px;
    color: var(--color-text-weak);
    margin-bottom: 10px;
}

.product-card-desc {
    font-size: 13px;
    color: var(--color-text-weak);
    line-height: 1.6;
    flex: 1;
}

.product-card-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--color-text-weak);
    margin: 14px 0;
}

.product-card-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ========== Advantage ========== */
.advantage-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 640px) {
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .advantage-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.advantage-card {
    text-align: center;
    padding: 30px 20px;
}

.advantage-icon-wrap {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    box-shadow: 0 0 20px rgba(0, 234, 255, 0.2);
}

.advantage-icon {
    font-size: 24px;
    color: #000;
}

.advantage-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

.advantage-card p {
    font-size: 13px;
    color: var(--color-text-weak);
    line-height: 1.7;
}

/* ========== CTA Section ========== */
.cta-section {
    padding: 80px 0;
}

.cta-card {
    text-align: center;
    padding: 50px 30px;
    background: linear-gradient(135deg, rgba(0,234,255,0.08), rgba(124,60,255,0.08));
    border-color: rgba(0, 234, 255, 0.3);
}

.cta-card h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.cta-card p {
    color: var(--color-text-weak);
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== Page Hero ========== */
.page-hero {
    padding: 60px 0 40px;
    text-align: center;
}

.page-hero-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-hero-desc {
    color: var(--color-text-weak);
}

/* ========== Filter Bar ========== */
.filter-section {
    padding-bottom: 30px;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
}

.filter-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-cat {
    padding: 6px 16px;
    font-size: 13px;
    border-radius: 50px;
    color: var(--color-text-weak);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.filter-cat:hover,
.filter-cat.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(0, 234, 255, 0.1);
}

.filter-search {
    display: flex;
    align-items: center;
}

.search-input {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: 50px 0 0 50px;
    color: var(--color-text);
    font-size: 14px;
    outline: none;
    width: 180px;
    font-family: var(--font-cn);
}

.search-input:focus {
    border-color: var(--color-primary);
}

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

.search-btn {
    padding: 8px 16px;
    background: var(--gradient-primary);
    color: #000;
    border: none;
    border-radius: 0 50px 50px 0;
    cursor: pointer;
    font-size: 16px;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
    border-radius: 50px;
    border: 1px solid var(--color-border);
    color: var(--color-text-weak);
    background: rgba(255, 255, 255, 0.04);
    transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
    background: var(--gradient-primary);
    color: #000;
    border-color: transparent;
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-icon {
    font-size: 64px;
    display: block;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--color-text-weak);
    margin-bottom: 24px;
}

/* ========== Breadcrumb ========== */
.breadcrumb-wrap {
    padding: 20px 0 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--color-text-weak);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-sep {
    color: var(--color-border);
}

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

/* ========== Detail Page ========== */
.detail-header-section {
    padding: 20px 0 40px;
}

.detail-header-card {
    padding: 40px;
}

.detail-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.detail-tag {
    padding: 4px 14px;
    font-size: 12px;
    border-radius: 50px;
    background: rgba(0, 234, 255, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(0, 234, 255, 0.2);
}

.tag-recommend {
    background: rgba(255, 78, 205, 0.1);
    color: var(--color-accent);
    border-color: rgba(255, 78, 205, 0.2);
}

.detail-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.3;
}

.detail-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-weak);
    margin-bottom: 16px;
}

.detail-header-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--color-text-weak);
}

/* Video Section */
.detail-video-section {
    padding-bottom: 40px;
}

.video-card {
    padding: 30px;
}

.video-wrapper {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    position: relative;
}

.video-wrapper::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-md);
    padding: 2px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 1;
}

.product-video {
    width: 100%;
    display: block;
    background: #000;
    border-radius: var(--radius-md);
}

/* Demo Links */
.detail-demo-section {
    padding-bottom: 40px;
}

.demo-card {
    padding: 30px;
    text-align: center;
}

.demo-buttons-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 20px;
}

.demo-btn-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--gradient-primary);
    color: #000;
    font-size: 15px;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 234, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.demo-btn-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 234, 255, 0.5);
    color: #000;
}

.demo-btn-link.secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: none;
}

.demo-btn-link.secondary:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 234, 255, 0.2);
    color: var(--color-text);
}

.demo-btn-icon {
    font-size: 18px;
}

.demo-btn-arrow {
    font-size: 16px;
    transition: transform 0.3s;
}

.demo-btn-link:hover .demo-btn-arrow {
    transform: translate(2px, -2px);
}

/* Detail Content Layout */
.detail-content-section {
    padding-bottom: 80px;
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 1024px) {
    .detail-layout {
        grid-template-columns: 1fr 320px;
    }
}

/* Detail Blocks */
.detail-block {
    padding: 30px;
    margin-bottom: 24px;
}

.block-title {
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.block-icon {
    font-size: 22px;
}

.block-content {
    color: var(--color-text-weak);
    line-height: 1.8;
}

.short-desc {
    font-size: 1.05rem;
    margin-bottom: 16px;
}

.rich-content {
    color: var(--color-text-weak);
    line-height: 1.9;
}

.rich-content p {
    margin-bottom: 12px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-weak);
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.feature-check {
    color: var(--color-primary);
    font-weight: bold;
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tag {
    padding: 6px 16px;
    font-size: 13px;
    border-radius: 50px;
    background: rgba(124, 60, 255, 0.1);
    color: var(--color-secondary);
    border: 1px solid rgba(124, 60, 255, 0.2);
}

/* Scene Tags */
.scene-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.scene-tag {
    padding: 6px 16px;
    font-size: 13px;
    border-radius: 50px;
    background: rgba(0, 234, 255, 0.08);
    color: var(--color-primary);
    border: 1px solid rgba(0, 234, 255, 0.15);
}

/* Detail CTA */
.detail-cta {
    text-align: center;
    padding: 30px;
    margin-top: 24px;
}

.detail-cta h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.detail-cta p {
    color: var(--color-text-weak);
    margin-bottom: 20px;
    font-size: 14px;
}

/* Sidebar */
.sidebar-card {
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-card h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-image img {
    border-radius: var(--radius-sm);
    width: 100%;
}

.sidebar-info-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 13px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: var(--color-text-weak);
}

.sidebar-info-list li:last-child {
    border-bottom: none;
}

.sidebar-info-list li span:last-child {
    color: var(--color-text);
    font-weight: 500;
}

/* Sidebar Products */
.sidebar-product-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
}

.sidebar-product-item:hover {
    color: var(--color-primary);
}

.sidebar-product-item:last-child {
    border-bottom: none;
}

.sp-thumb {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sp-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sp-placeholder {
    font-size: 20px;
    color: rgba(255,255,255,0.2);
}

.sp-info h5 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.4;
}

.sp-views {
    font-size: 11px;
    color: var(--color-text-weak);
}

/* ========== Category Nav Grid ========== */
.category-nav-section {
    padding-bottom: 30px;
}

.category-nav-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (min-width: 640px) {
    .category-nav-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.cat-nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
}

.cat-nav-card:hover,
.cat-nav-card.active {
    border-color: var(--color-primary);
    background: rgba(0, 234, 255, 0.08);
    box-shadow: 0 0 20px rgba(0, 234, 255, 0.15);
}

.cat-nav-icon {
    font-size: 22px;
}

.cat-nav-name {
    font-size: 13px;
    font-weight: 500;
}

.cat-nav-count {
    font-size: 11px;
    color: var(--color-text-weak);
    background: rgba(255,255,255,0.06);
    padding: 2px 10px;
    border-radius: 50px;
}

.category-info-section {
    padding-bottom: 30px;
}

.category-info-card {
    text-align: center;
    padding: 24px;
}

.category-info-card h2 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.category-info-card p {
    color: var(--color-text-weak);
    margin-bottom: 12px;
}

.category-info-count {
    font-size: 13px;
    color: var(--color-primary);
    padding: 4px 16px;
    border: 1px solid rgba(0, 234, 255, 0.3);
    border-radius: 50px;
}

/* ========== Contact Page ========== */
.contact-intro-section {
    padding-bottom: 40px;
}

.contact-intro-card {
    padding: 30px;
    text-align: center;
}

.contact-intro-card h2 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.contact-intro-card p {
    color: var(--color-text-weak);
    line-height: 1.8;
    margin-bottom: 10px;
}

/* Scope Grid */
.scope-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .scope-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .scope-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.scope-card {
    text-align: center;
    padding: 24px 16px;
}

.scope-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 12px;
}

.scope-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.scope-card p {
    font-size: 13px;
    color: var(--color-text-weak);
    line-height: 1.6;
}

/* Contact Grid */
.contact-info-section {
    padding: 40px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 640px) {
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.contact-card {
    text-align: center;
    padding: 30px 16px;
}

.contact-card-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.contact-card-icon {
    font-size: 24px;
}

.contact-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
    word-break: break-all;
}

.contact-hint {
    font-size: 12px;
    color: var(--color-text-weak);
}

/* Process Steps */
.process-section {
    padding: 60px 0;
}

.process-steps {
    max-width: 700px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 60px;
    bottom: -20px;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
}

.process-step:last-child::after {
    display: none;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: 0 0 20px rgba(0, 234, 255, 0.3);
}

.step-content {
    flex: 1;
    padding: 20px;
}

.step-content h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

.step-content p {
    font-size: 13px;
    color: var(--color-text-weak);
    line-height: 1.6;
}

/* ========== Footer ========== */
.site-footer {
    position: relative;
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
}

.footer-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-secondary), var(--color-accent), transparent);
}

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

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-logo {
    font-size: 18px;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 13px;
    color: var(--color-text-weak);
    line-height: 1.7;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    font-size: 13px;
    color: var(--color-text-weak);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-weak);
}

.contact-icon {
    font-size: 16px;
}

.footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
}

.footer-tech-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    margin-bottom: 20px;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--color-text-weak);
}

/* ========== Animations ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* Stagger delay */
.fade-in-up:nth-child(1) { animation-delay: 0.05s; }
.fade-in-up:nth-child(2) { animation-delay: 0.1s; }
.fade-in-up:nth-child(3) { animation-delay: 0.15s; }
.fade-in-up:nth-child(4) { animation-delay: 0.2s; }
.fade-in-up:nth-child(5) { animation-delay: 0.25s; }
.fade-in-up:nth-child(6) { animation-delay: 0.3s; }
.fade-in-up:nth-child(7) { animation-delay: 0.35s; }
.fade-in-up:nth-child(8) { animation-delay: 0.4s; }
.fade-in-up:nth-child(9) { animation-delay: 0.45s; }

/* ========== Responsive ========== */
@media (max-width: 767px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-subtitle br {
        display: none;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(5, 8, 22, 0.95);
        backdrop-filter: blur(20px);
        padding: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .main-nav.open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
    }

    .main-nav a {
        padding: 12px 16px;
        font-size: 16px;
    }

    .menu-toggle {
        display: flex;
    }

    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(5, 8, 22, 0.95);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--color-border);
        z-index: 999;
        padding: 8px 0;
        padding-bottom: env(safe-area-inset-bottom, 8px);
    }

    .mobile-bottom-nav a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        color: var(--color-text-weak);
        font-size: 10px;
        text-decoration: none;
        padding: 4px 0;
    }

    .mobile-bottom-nav a.active {
        color: var(--color-primary);
    }

    .mbn-icon {
        font-size: 18px;
    }

    .site-main {
        padding-bottom: 70px;
    }

    .site-footer {
        padding-bottom: 80px;
    }

    .detail-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

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

    .filter-categories {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }

    .filter-search {
        width: 100%;
    }

    .search-input {
        flex: 1;
        width: auto;
    }

    .demo-buttons-grid {
        flex-direction: column;
        align-items: stretch;
    }

    .demo-btn-link {
        justify-content: center;
    }
}

@media (max-width: 400px) {
    .hero-title {
        font-size: 1.4rem;
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}