/* ========================================
   Ledger Wallet官网 - 优化版样式表
   深色主题 + 现代UI + 极致体验
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - 深色主题 */
    --bg: #0a0a0b;
    --bg-2: #111113;
    --bg-3: #1a1a1d;
    --bg-card: rgba(255,255,255,0.03);
    --fg: #ffffff;
    --fg-2: #a1a1aa;
    --fg-3: #71717a;
    
    /* Accent Colors */
    --accent: #f97316;
    --accent-2: #fb923c;
    --accent-glow: rgba(249,115,22,0.4);
    --gold: #fbbf24;
    --cyber: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Gradients */
    --grad-accent: linear-gradient(135deg, #f97316 0%, #fb923c 50%, #fbbf24 100%);
    --grad-dark: linear-gradient(180deg, #0a0a0b 0%, #111113 100%);
    --grad-card: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
    
    /* Shadows */
    --glow-btn: 0 0 30px rgba(249,115,22,0.5), 0 0 60px rgba(249,115,22,0.3);
    --glow-card: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 25px 50px -12px rgba(0,0,0,0.5);
    
    /* Borders */
    --border: rgba(255,255,255,0.08);
    --border-2: rgba(255,255,255,0.15);
    --glass: rgba(255,255,255,0.05);
    
    /* Border Radius */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 24px;
    --r-2xl: 32px;
    --r-full: 9999px;
    
    /* Transitions */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Layout */
    --container: 1200px;
    --header-h: 72px;
    --z-header: 100;
    --z-modal: 200;
    --z-float: 300;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--fg);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
    overflow: hidden;
}

::selection {
    background: var(--accent);
    color: #000;
}

/* Base Elements */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s var(--ease);
}

a:hover {
    color: var(--accent-2);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--fg);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
    margin-bottom: 1rem;
    color: var(--fg-2);
}

ul, ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
    color: var(--fg-2);
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.text-glow {
    text-shadow: 0 0 20px var(--accent-glow), 0 0 40px var(--accent-glow);
}

/* Background Effects */
.bg-noise {
    position: fixed;
    inset: 0;
    z-index: -3;
    background: var(--bg);
}

.bg-noise::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.bg-gradient-orbs {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-orb--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(249,115,22,0.3) 0%, transparent 70%);
    top: -200px;
    right: -100px;
}

.bg-orb--2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6,182,212,0.2) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -7s;
}

.bg-orb--3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(251,191,36,0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 20%, transparent 70%);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: rgba(10,10,11,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: var(--z-header);
    transition: all 0.3s var(--ease);
}

.site-header.is-scrolled {
    background: rgba(10,10,11,0.95);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo - 官方风格 */
.site-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.site-logo svg {
    height: 32px;
    width: auto;
    color: var(--fg);
    transition: all 0.3s var(--ease);
}

.site-logo:hover svg {
    color: var(--accent);
}

/* Navigation */
.main-nav {
    display: none;
}

.nav-list {
    display: flex;
    gap: 0.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-list a {
    display: block;
    padding: 0.625rem 1rem;
    color: var(--fg-2);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--r-full);
    transition: all 0.3s var(--ease);
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--grad-accent);
    transition: all 0.3s var(--ease);
    transform: translateX(-50%);
}

.nav-list a:hover {
    color: var(--fg);
}

.nav-list a:hover::after {
    width: 60%;
}

.nav-list a.is-current {
    color: var(--accent);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    cursor: pointer;
    transition: all 0.3s;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--fg);
    border-radius: 2px;
    transition: all 0.3s;
}

.nav-toggle:hover {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 900px) {
    .main-nav { display: block; }
    .nav-toggle { display: none; }
}

/* Mobile Nav Drawer */
.nav-drawer {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10,10,11,0.98);
    backdrop-filter: blur(20px);
    z-index: calc(var(--z-header) - 1);
    padding: 2rem;
    transform: translateX(-100%);
    transition: transform 0.4s var(--ease);
    overflow-y: auto;
}

.nav-drawer.is-open {
    transform: translateX(0);
}

.nav-drawer .nav-list {
    flex-direction: column;
    gap: 0.5rem;
}

.nav-drawer .nav-list a {
    padding: 1rem 1.5rem;
    font-size: 1.125rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--r-full);
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-spring);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--grad-accent);
    color: #000;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--glow-btn);
}

.btn--primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn--primary:hover::before {
    transform: translateX(100%);
}

.btn--outline {
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--border-2);
}

.btn--outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn--lg {
    padding: 1rem 2.25rem;
    font-size: 1rem;
}

/* Sections */
.section {
    padding: 6rem 0;
    position: relative;
}

.section--alt {
    background: var(--bg-2);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--header-h) + 4rem) 0 6rem;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 1000px) {
    .hero-inner {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem 0.5rem 0.5rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--fg-2);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s var(--ease) backwards;
}

.hero-badge .badge-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--grad-accent);
    border-radius: 50%;
    color: #000;
    font-size: 0.75rem;
}

.hero-badge .badge-text {
    color: var(--accent);
    font-weight: 600;
}

.hero h1 {
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s var(--ease) 0.1s backwards;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--fg-2);
    margin-bottom: 2rem;
    line-height: 1.7;
    animation: fadeInUp 0.8s var(--ease) 0.2s backwards;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    animation: fadeInUp 0.8s var(--ease) 0.3s backwards;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    animation: fadeInUp 0.8s var(--ease) 0.4s backwards;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trust-item svg {
    width: 20px;
    height: 20px;
    color: var(--success);
}

.trust-item span {
    font-size: 0.875rem;
    color: var(--fg-2);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: none;
    animation: fadeInRight 1s var(--ease) 0.3s backwards;
}

@media (min-width: 1000px) {
    .hero-visual {
        display: block;
    }
}

.hero-cards {
    position: relative;
    width: 100%;
    height: 500px;
    perspective: 1000px;
}

.hero-card {
    position: absolute;
    border-radius: var(--r-xl);
    overflow: hidden;
    box-shadow: var(--glow-card);
    transition: all 0.5s var(--ease);
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.hero-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-card--main {
    width: 280px;
    height: 350px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateY(-5deg);
    z-index: 3;
}

.hero-card--left {
    width: 220px;
    height: 280px;
    top: 60%;
    left: 5%;
    transform: translateY(-50%) rotateY(10deg) rotateX(-5deg);
    z-index: 2;
    opacity: 0.9;
}

.hero-card--right {
    width: 200px;
    height: 260px;
    top: 40%;
    right: 5%;
    transform: translateY(-50%) rotateY(-10deg) rotateX(5deg);
    z-index: 1;
    opacity: 0.85;
}

.hero-card:hover {
    z-index: 10;
    box-shadow: 0 20px 60px rgba(249,115,22,0.3);
}

.hero-card--main:hover {
    transform: translate(-50%, -50%) rotateY(0) scale(1.05);
}

.hero-card--left:hover,
.hero-card--right:hover {
    transform: translateY(-50%) rotateY(0) rotateX(0) scale(1.08);
    opacity: 1;
}

.hero-decoration {
    position: absolute;
    border-radius: 50%;
    border: 1px dashed var(--border);
    animation: decorSpin 40s linear infinite;
    pointer-events: none;
}

.hero-decoration--1 {
    width: 500px;
    height: 500px;
    top: 10%;
    right: -10%;
}

.hero-decoration--2 {
    width: 350px;
    height: 350px;
    bottom: 5%;
    right: 10%;
    animation-direction: reverse;
    animation-duration: 30s;
}

@keyframes decorSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

@media (min-width: 1000px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.product-card {
    position: relative;
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 1.5rem;
    transition: all 0.4s var(--ease);
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(249,115,22,0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(249,115,22,0.2);
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--grad-accent);
    color: #000;
    font-size: 0.6875rem;
    font-weight: 700;
    border-radius: var(--r-full);
    z-index: 2;
}

.product-badge--hot {
    background: var(--danger);
    color: #fff;
}

.product-badge--value {
    background: var(--success);
    color: #fff;
}

.product-image {
    position: relative;
    margin-bottom: 1.5rem;
    padding: 1rem;
}

.product-image img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    transition: transform 0.4s var(--ease);
}

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

.product-info h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.product-tagline {
    font-size: 0.8125rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.product-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.product-features li {
    font-size: 0.8125rem;
    color: var(--fg-2);
    margin-bottom: 0.375rem;
    padding-left: 1.25rem;
    position: relative;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-size: 0.75rem;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.product-actions .btn {
    flex: 1;
    padding: 0.625rem 1rem;
    font-size: 0.8125rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

@media (min-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .feature-card--large {
        grid-column: span 2;
    }
}

.feature-card {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2rem;
    transition: all 0.3s var(--ease);
}

.feature-card:hover {
    border-color: var(--border-2);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* Stats Banner */
.stats-banner {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-2xl);
    padding: 3rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 900px) {
    .stats-banner {
        grid-template-columns: 1fr 2fr;
    }
}

.stats-content h2 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.stats-content p {
    margin-bottom: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

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

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--grad-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--fg-3);
}

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

@media (min-width: 900px) {
    .process-steps {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step-item {
    position: relative;
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2rem;
    transition: all 0.3s var(--ease);
}

.step-item:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--grad-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.step-content h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.step-content p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

.step-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass);
    border-radius: 50%;
}

.step-icon svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

/* Insights Grid */
.insights-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .insights-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.insight-card {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2rem;
    transition: all 0.3s var(--ease);
}

.insight-card:hover {
    border-color: var(--border-2);
    transform: translateY(-4px);
}

.insight-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.insight-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.insight-card p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* Info Banner */
.info-banner {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--r-lg);
    margin-top: 2rem;
}

.info-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-content {
    font-size: 0.9375rem;
    color: var(--fg-2);
}

.info-content strong {
    color: var(--fg);
}

/* Guide Grid */
.guide-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

@media (min-width: 900px) {
    .guide-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.guide-grid--secondary {
    margin-top: 1.5rem;
}

@media (min-width: 900px) {
    .guide-grid--secondary {
        grid-template-columns: repeat(3, 1fr);
    }
}

.guide-card {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 1.5rem;
    transition: all 0.3s var(--ease);
}

.guide-card:hover {
    border-color: var(--border-2);
}

.guide-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass);
    border-radius: var(--r-md);
    margin-bottom: 1rem;
}

.guide-icon svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.guide-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.guide-card p {
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Trust Grid */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .trust-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.trust-card {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2rem;
    text-align: center;
    transition: all 0.3s var(--ease);
}

.trust-card:hover {
    border-color: var(--border-2);
}

.trust-card .trust-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    border-radius: var(--r-lg);
    overflow: hidden;
}

.trust-card .trust-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.trust-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.trust-card p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

.trust-card--updates {
    text-align: left;
}

.update-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.update-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.update-date {
    flex-shrink: 0;
    padding: 0.125rem 0.5rem;
    background: var(--glass);
    border-radius: var(--r-sm);
    font-size: 0.75rem;
    color: var(--accent);
}

/* CTA Banner */
.cta-banner {
    position: relative;
    border-radius: var(--r-2xl);
    overflow: hidden;
    padding: 4rem 2rem;
    text-align: center;
}

.cta-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.cta-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.cta-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(249,115,22,0.8) 0%, rgba(251,191,36,0.6) 100%);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 0.75rem;
}

.cta-content p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.cta-banner .btn--primary {
    background: #fff;
    color: var(--accent);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.cta-banner .btn--outline {
    border-color: #fff;
    color: #fff;
}

.cta-banner .btn--outline:hover {
    background: #fff;
    color: var(--accent);
}

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

.faq-item {
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s var(--ease);
}

.faq-item:hover {
    border-color: var(--border-2);
}

.faq-item[open] {
    border-color: var(--accent);
}

.faq-item summary {
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 400;
    transition: all 0.3s;
}

.faq-item[open] summary::after {
    content: '−';
    background: var(--grad-accent);
    color: #000;
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    animation: fadeIn 0.3s var(--ease);
}

.faq-answer p {
    margin-bottom: 0;
}

/* Footer */
.site-footer {
    background: var(--bg-2);
    padding: 5rem 0 2rem;
    margin-top: 6rem;
    position: relative;
    border-top: 1px solid var(--border);
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--grad-accent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

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

@media (min-width: 900px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(4, 1fr);
    }
}

.footer-brand .footer-logo {
    display: inline-block;
    margin-bottom: 1rem;
}

.footer-brand .footer-logo svg {
    height: 28px;
    width: auto;
    color: var(--fg);
}

.footer-desc {
    font-size: 0.9375rem;
    color: var(--fg-2);
    margin-bottom: 0;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--fg);
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    font-size: 0.875rem;
    color: var(--fg-3);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--fg-3);
    margin-bottom: 0.5rem;
}

/* Back to Top */
.back-top {
    position: fixed;
    right: 1.5rem;
    bottom: 6rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--grad-accent);
    border: none;
    border-radius: 50%;
    color: #000;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.4s var(--ease-spring);
    z-index: var(--z-float);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-top:hover {
    transform: translateY(-5px) scale(1.1);
}

/* Chat Float */
.chat-float {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    z-index: var(--z-float);
}

.chat-float-btn {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cyber);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(6,182,212,0.4);
    transition: all 0.4s var(--ease-spring);
    position: relative;
}

.chat-float-btn::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: var(--cyber);
    opacity: 0.3;
    animation: chatRing 2s ease-out infinite;
}

@keyframes chatRing {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

.chat-float-btn:hover {
    transform: scale(1.15);
}

.chat-float-btn svg {
    width: 24px;
    height: 24px;
    position: relative;
}

.chat-float-label {
    position: absolute;
    right: 68px;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.625rem 1rem;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    font-size: 0.8125rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.chat-float:hover .chat-float-label {
    opacity: 1;
    visibility: visible;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s var(--ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    padding: 1rem 1.5rem;
    background: var(--accent);
    color: #000;
    border-radius: var(--r-md);
    font-weight: 700;
    z-index: 9999;
}

.skip-link:focus {
    top: 1rem;
    color: #000;
}

/* Tables */
.table-wrap {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: var(--r-xl);
    background: var(--grad-card);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
}

th {
    background: var(--glass);
    font-weight: 600;
    color: var(--fg);
    border-bottom: 1px solid var(--border);
}

td {
    color: var(--fg-2);
    border-bottom: 1px solid var(--border);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(249,115,22,0.03);
}

/* Alerts */
.alert {
    padding: 1.5rem;
    border-radius: var(--r-lg);
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.alert--info {
    border-color: var(--cyber);
    background: rgba(6,182,212,0.1);
}

.alert--warning {
    border-color: var(--warning);
    background: rgba(245,158,11,0.1);
}

.alert--danger {
    border-color: var(--danger);
    background: rgba(239,68,68,0.1);
}

.alert--success {
    border-color: var(--success);
    background: rgba(16,185,129,0.1);
}

.alert h4 {
    margin-bottom: 0.5rem;
}

.alert p:last-child {
    margin-bottom: 0;
}

/* Breadcrumb */
.breadcrumb {
    padding: calc(var(--header-h) + 2rem) 0 1rem;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    font-size: 0.875rem;
    padding: 0;
    margin: 0;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    color: var(--fg-3);
}

.breadcrumb a {
    color: var(--fg-3);
}

.breadcrumb span {
    color: var(--accent);
    font-weight: 600;
}

/* Page Header */
.page-header {
    padding: 2rem 0 4rem;
    text-align: center;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* TOC */
.toc {
    padding: 2rem;
    background: var(--grad-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    margin-bottom: 3rem;
}

.toc h2 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

.toc-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list a {
    display: block;
    padding: 0.5rem 1rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fg-2);
    transition: all 0.3s var(--ease);
}

.toc-list a:hover,
.toc-list a.is-active {
    background: var(--grad-accent);
    border-color: transparent;
    color: #000;
}

/* Card Grid */
.card-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
    .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
    .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
    .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
    .card-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ========================================
   Hero Showcase - 科技感3D展示区
   ======================================== */

.hero-visual {
    position: relative;
    display: none;
}

@media (min-width: 1000px) {
    .hero-visual {
        display: block;
    }
}

.hero-showcase {
    position: relative;
    width: 100%;
    height: 550px;
    perspective: 1500px;
}

/* 旋转光环 */
.showcase-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    animation: ringRotate 20s linear infinite;
    pointer-events: none;
}

.showcase-ring--1 {
    width: 450px;
    height: 450px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateX(70deg);
    border-color: rgba(249,115,22,0.3);
    box-shadow: 0 0 30px rgba(249,115,22,0.2), inset 0 0 30px rgba(249,115,22,0.1);
}

.showcase-ring--2 {
    width: 380px;
    height: 380px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateX(70deg) rotateZ(45deg);
    border-color: rgba(6,182,212,0.25);
    animation-direction: reverse;
    animation-duration: 15s;
}

.showcase-ring--3 {
    width: 520px;
    height: 520px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateX(70deg) rotateZ(-30deg);
    border-color: rgba(251,191,36,0.15);
    border-style: dashed;
    animation-duration: 30s;
}

@keyframes ringRotate {
    from { transform: translate(-50%, -50%) rotateX(70deg) rotateZ(0deg); }
    to { transform: translate(-50%, -50%) rotateX(70deg) rotateZ(360deg); }
}

/* 中心发光 */
.showcase-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(249,115,22,0.4) 0%, transparent 70%);
    filter: blur(40px);
    animation: glowPulse 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
}

/* 卡片容器 */
.showcase-cards {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

/* 展示卡片 */
.showcase-card {
    position: absolute;
    border-radius: 24px;
    background: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.02) 100%);
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
}

.showcase-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
}

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

.showcase-card-inner {
    padding: 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.showcase-card img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.showcase-card:hover img {
    transform: scale(1.08) translateY(-5px);
}

/* 卡片位置 - 层叠扇形排列 */
.showcase-card--back {
    width: 200px;
    height: 280px;
    left: 5%;
    top: 50%;
    transform: translateY(-50%) rotateY(15deg) rotateX(-5deg) translateZ(-50px);
    z-index: 1;
    opacity: 0.7;
}

.showcase-card--mid {
    width: 240px;
    height: 340px;
    left: 50%;
    top: 55%;
    transform: translate(-75%, -50%) rotateY(5deg) translateZ(0);
    z-index: 2;
    opacity: 0.9;
}

.showcase-card--front {
    width: 280px;
    height: 400px;
    left: 50%;
    top: 50%;
    transform: translate(-30%, -50%) rotateY(-5deg) translateZ(50px);
    z-index: 3;
    box-shadow: 0 30px 80px rgba(249,115,22,0.3), 0 0 0 1px rgba(249,115,22,0.2);
}

.showcase-card--back:hover {
    transform: translateY(-50%) rotateY(0) rotateX(0) translateZ(100px) scale(1.1);
    z-index: 10;
    opacity: 1;
}

.showcase-card--mid:hover {
    transform: translate(-75%, -50%) rotateY(0) translateZ(100px) scale(1.1);
    z-index: 10;
    opacity: 1;
}

.showcase-card--front:hover {
    transform: translate(-30%, -50%) rotateY(0) translateZ(100px) scale(1.05);
    z-index: 10;
    box-shadow: 0 40px 100px rgba(249,115,22,0.4), 0 0 0 2px rgba(249,115,22,0.3);
}

/* 粒子效果 */
.showcase-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    animation: particleFloat 8s ease-in-out infinite;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.particle:nth-child(2) { left: 80%; top: 30%; animation-delay: -1s; }
.particle:nth-child(3) { left: 20%; top: 70%; animation-delay: -2s; }
.particle:nth-child(4) { left: 70%; top: 80%; animation-delay: -3s; }
.particle:nth-child(5) { left: 40%; top: 10%; animation-delay: -4s; }
.particle:nth-child(6) { left: 90%; top: 60%; animation-delay: -5s; }

@keyframes particleFloat {
    0%, 100% { 
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translate(20px, -30px) scale(1.5);
        opacity: 1;
    }
    50% { 
        transform: translate(-10px, -60px) scale(0.8);
        opacity: 0.4;
    }
    75% {
        transform: translate(30px, -20px) scale(1.2);
        opacity: 0.8;
    }
}

/* 标签指示器 */
.showcase-label {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(10,10,11,0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--fg-2);
    white-space: nowrap;
    animation: labelFloat 4s ease-in-out infinite;
    z-index: 20;
}

.label-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.showcase-label--1 {
    top: 15%;
    right: 10%;
    animation-delay: 0s;
}

.showcase-label--2 {
    bottom: 25%;
    left: 5%;
    animation-delay: -1.5s;
}

.showcase-label--3 {
    bottom: 10%;
    right: 20%;
    animation-delay: -3s;
}

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

/* 响应式调整 */
@media (max-width: 1200px) {
    .showcase-card--back { left: 0; }
    .showcase-card--front { width: 250px; height: 360px; }
    .showcase-ring--1 { width: 380px; height: 380px; }
    .showcase-ring--3 { width: 450px; height: 450px; }
}

/* ========================================
   Hero Stage - 全新科技感展示区 V2
   ======================================== */

.hero-visual {
    position: relative;
    display: none;
}

@media (min-width: 1000px) {
    .hero-visual {
        display: block;
    }
}

.hero-stage {
    position: relative;
    width: 100%;
    height: 550px;
}

/* 背景发光 */
.stage-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}

.stage-glow--1 {
    width: 400px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(249,115,22,0.5) 0%, transparent 70%);
    animation: glowPulse 4s ease-in-out infinite;
}

.stage-glow--2 {
    width: 300px;
    height: 300px;
    top: 30%;
    right: 10%;
    background: radial-gradient(circle, rgba(6,182,212,0.3) 0%, transparent 70%);
    animation: glowPulse 5s ease-in-out infinite 1s;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}

/* 轨道圈 */
.stage-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    border-style: solid;
    animation: orbitSpin 30s linear infinite;
    pointer-events: none;
}

.stage-orbit--1 {
    width: 500px;
    height: 500px;
    margin: -250px 0 0 -250px;
    border-width: 1px;
    border-color: rgba(249,115,22,0.3);
}

.stage-orbit--2 {
    width: 400px;
    height: 400px;
    margin: -200px 0 0 -200px;
    border-width: 1px;
    border-color: rgba(6,182,212,0.2);
    animation-direction: reverse;
    animation-duration: 25s;
}

.stage-orbit--3 {
    width: 300px;
    height: 300px;
    margin: -150px 0 0 -150px;
    border-width: 2px;
    border-color: rgba(251,191,36,0.25);
    border-style: dashed;
    animation-duration: 20s;
}

@keyframes orbitSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 主产品展示 */
.stage-product {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.stage-img--main {
    max-width: 420px;
    max-height: 320px;
    object-fit: contain;
    border-radius: 20px;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5));
    animation: mainFloat 6s ease-in-out infinite;
}

@keyframes mainFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 悬浮小图 */
.stage-float {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(20,20,22,0.8);
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    z-index: 15;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
}

.stage-float img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    transition: all 0.4s;
}

.stage-float:hover {
    transform: scale(1.15);
    border-color: var(--accent);
    box-shadow: 0 10px 40px rgba(249,115,22,0.4);
    z-index: 20;
}

.stage-float:hover img {
    opacity: 1;
}

.stage-float--1 {
    top: 5%;
    right: 15%;
    animation: float1 8s ease-in-out infinite;
}

.stage-float--2 {
    bottom: 20%;
    left: 5%;
    width: 90px;
    height: 90px;
    animation: float2 7s ease-in-out infinite 1s;
}

.stage-float--3 {
    bottom: 5%;
    right: 25%;
    width: 80px;
    height: 80px;
    animation: float3 9s ease-in-out infinite 2s;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(10px, -15px) rotate(2deg); }
    50% { transform: translate(-5px, -25px) rotate(-1deg); }
    75% { transform: translate(-15px, -10px) rotate(1deg); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(15px, -20px) rotate(-2deg); }
    66% { transform: translate(-10px, -15px) rotate(2deg); }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-20px, -30px) rotate(-3deg); }
}

/* 粒子 */
.stage-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    pointer-events: none;
    animation: particleDrift 10s linear infinite;
}

.stage-particle--1 { top: 10%; left: 20%; animation-delay: 0s; }
.stage-particle--2 { top: 80%; left: 15%; animation-delay: -2s; width: 4px; height: 4px; }
.stage-particle--3 { top: 20%; right: 10%; animation-delay: -4s; }
.stage-particle--4 { bottom: 30%; right: 5%; animation-delay: -6s; width: 5px; height: 5px; }
.stage-particle--5 { top: 50%; left: 5%; animation-delay: -8s; width: 3px; height: 3px; }
.stage-particle--6 { bottom: 10%; left: 40%; animation-delay: -3s; }

@keyframes particleDrift {
    0% { 
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    10% {
        opacity: 1;
        transform: translateY(-20px) scale(1);
    }
    90% {
        opacity: 0.8;
        transform: translateY(-100px) scale(0.8);
    }
    100% {
        opacity: 0;
        transform: translateY(-120px) scale(0);
    }
}

/* 功能标签 */
.stage-tag {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(10,10,11,0.9);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    z-index: 20;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: tagPulse 2s ease-in-out infinite;
}

@keyframes tagPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

.stage-tag--1 {
    top: 10%;
    right: 5%;
    animation: tagFloat 5s ease-in-out infinite;
}

.stage-tag--2 {
    top: 50%;
    left: 0;
    animation: tagFloat 6s ease-in-out infinite 1s;
}

.stage-tag--3 {
    bottom: 15%;
    right: 10%;
    animation: tagFloat 5.5s ease-in-out infinite 2s;
}

@keyframes tagFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* 响应式 */
@media (max-width: 1200px) {
    .stage-img--main {
        max-width: 350px;
        max-height: 280px;
    }
    
    .stage-orbit--1 { width: 400px; height: 400px; margin: -200px 0 0 -200px; }
    .stage-orbit--2 { width: 320px; height: 320px; margin: -160px 0 0 -160px; }
    .stage-orbit--3 { width: 240px; height: 240px; margin: -120px 0 0 -120px; }
    
    .stage-float--1 { right: 5%; }
    .stage-float--2 { left: 0; }
}