/*
   YellowCard Premium Design System v3.0
   专家团队优化版：更现代、更精致、更有层次感
*/

/* ===========================
   1. CSS变量系统 - 更丰富的色彩层次
   =========================== */
:root {
    /* 主色调 - 添加更多层次 */
    --primary-gold: #FFD700;
    --primary-gold-light: #FFED4E;
    --primary-gold-dark: #D4AF37;
    --accent-orange: #FFA500;

    /* 背景色 - 不再纯黑，而是深空蓝 */
    --bg-primary: #0A0E1B;
    --bg-secondary: #141823;
    --bg-card: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%);
    --bg-card-hover: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.04) 100%);

    /* 文字色彩 - 更好的对比度 */
    --text-primary: #FFFFFF;
    --text-secondary: #B8BCC8;
    --text-muted: #717684;
    --text-gold: var(--primary-gold);

    /* 边框和分割线 */
    --border-default: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    --border-gold: rgba(255, 215, 0, 0.3);

    /* 阴影系统 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-gold: 0 0 30px rgba(255, 215, 0, 0.2);

    /* 字体系统 */
    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-zh: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;

    /* 间距系统 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;

    /* 动画 */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   2. 重置和基础样式
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-en);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* 优化的星空背景 - 更柔和 */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 215, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 165, 0, 0.03) 0%, transparent 50%),
        url('../galaxy_space_background_seamless.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.4; /* 降低不透明度 */
    z-index: -2;
    filter: blur(1px) brightness(0.8);
}

/* 渐变叠加层 - 创建深度感 */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(10, 14, 27, 0.3) 0%,
        rgba(10, 14, 27, 0.7) 50%,
        rgba(10, 14, 27, 0.9) 100%
    );
    z-index: -1;
    pointer-events: none;
}

/* ===========================
   3. 排版系统优化
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text-primary);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

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

/* ===========================
   4. 中英文混排优化
   =========================== */
.zh {
    font-family: var(--font-zh);
    font-weight: 400;
    margin-left: 0.3em;
    font-size: 0.9em;
    opacity: 0.85;
    color: var(--text-secondary);
}

.zh-subtitle {
    display: block;
    font-family: var(--font-zh);
    font-size: 0.6em;
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    opacity: 0.8;
}

.zh-header {
    display: block;
    font-family: var(--font-zh);
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    letter-spacing: 2px;
}

.zh-logo {
    color: var(--primary-gold-light);
    font-size: 0.75em;
    font-weight: 500;
    margin-left: var(--spacing-xs);
    opacity: 0.9;
}

/* ===========================
   5. 按钮系统重构 - 更有质感
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-base);
    letter-spacing: 0.02em;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
    border: none;
    outline: none;
}

/* 主按钮 - 渐变+发光 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-orange) 100%);
    color: var(--bg-primary);
    box-shadow:
        0 4px 15px rgba(255, 215, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 8px 25px rgba(255, 215, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

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

/* 次要按钮 - 玻璃态 */
.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: var(--primary-gold);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--primary-gold);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.2);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 18px 48px;
    font-size: 1.1rem;
}

/* ===========================
   6. 导航栏优化 - 更精致
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 27, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-default);
    height: 80px;
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 14, 27, 0.95);
    height: 70px;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    color: var(--text-primary);
}

.logo img {
    height: 40px;
    margin-right: 12px;
    filter: drop-shadow(0 2px 8px rgba(255, 215, 0, 0.3));
    transition: var(--transition-base);
}

.logo:hover img {
    transform: rotate(-5deg) scale(1.05);
}

/* 导航链接 - 胶囊风格 */
.nav-links {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 6px;
    border-radius: 100px;
    border: 1px solid var(--border-default);
}

.nav-links li {
    display: flex;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 100px;
    transition: var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-gold);
    background: rgba(255, 215, 0, 0.1);
}

.nav-links .btn-sm {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-orange) 100%);
    color: var(--bg-primary);
    margin-left: var(--spacing-xs);
}

/* 移动菜单优化 */
.menu-toggle {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--primary-gold);
    transition: var(--transition-fast);
}

.menu-toggle:hover {
    transform: scale(1.1);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1001;
    padding: var(--spacing-lg);
    transition: right var(--transition-slow);
    border-left: 1px solid var(--border-light);
    box-shadow: -10px 0 50px rgba(0, 0, 0, 0.5);
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-default);
}

.close-btn {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.close-btn:hover {
    color: var(--primary-gold);
    transform: rotate(90deg);
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-md);
}

.mobile-link {
    font-size: 1.1rem;
    display: block;
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.mobile-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: width var(--transition-fast);
}

.mobile-link:hover {
    color: var(--primary-gold);
    padding-left: var(--spacing-sm);
}

.mobile-link:hover::after {
    width: 50px;
}

/* ===========================
   7. Hero Section 重新设计
   =========================== */
.hero {
    margin-top: 80px;
    padding: var(--spacing-3xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* 添加动态粒子背景效果 */
.hero::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.08) 0%, transparent 40%);
    animation: float 20s ease-in-out infinite;
    z-index: -1;
}

@keyframes float {
    0%, 100% { transform: translate(-10%, -10%) rotate(0deg); }
    50% { transform: translate(10%, 10%) rotate(180deg); }
}

.hero .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-sub {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

/* 徽章系统 - 更精致 */
.hero-badges {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-default);
    border-radius: 100px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
}

.badge ion-icon {
    font-size: 1.2rem;
    color: var(--primary-gold);
}

.badge:hover {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--border-gold);
    transform: translateY(-2px);
}

.highlight-badge {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 165, 0, 0.1) 100%);
    border-color: var(--border-gold);
    color: var(--primary-gold);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

/* Hero视觉区域 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out 0.8s backwards;
    perspective: 1000px;
}

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

/* ===========================
   纯CSS YellowCard信用卡设计
   =========================== */

/* 卡片包装器 */
.yellowcard-wrapper {
    position: relative;
    width: 450px;
    height: 280px;
    transform-style: preserve-3d;
}

/* 卡片背后的光晕效果 */
.yellowcard-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle,
        rgba(255, 215, 0, 0.4) 0%,
        rgba(255, 165, 0, 0.2) 30%,
        transparent 60%);
    filter: blur(40px);
    animation: pulseGlow 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulseGlow {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* 主卡片容器 */
.yellowcard {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: rotateY(-15deg) rotateX(10deg);
    cursor: pointer;
    animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0) rotateY(-15deg) rotateX(10deg);
    }
    50% {
        transform: translateY(-20px) rotateY(-15deg) rotateX(10deg);
    }
}

.yellowcard:hover {
    transform: rotateY(0deg) rotateX(0deg) scale(1.05);
}

/* 卡片表面 */
.card-face {
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    border-radius: 20px;
    background: linear-gradient(
        145deg,
        #1a1a1a 0%,
        #2d2d2d 25%,
        #1f1f1f 50%,
        #2a2a2a 75%,
        #151515 100%
    );
    box-shadow:
        0 30px 60px rgba(0, 0, 0, 0.6),
        0 15px 30px rgba(255, 215, 0, 0.15),
        inset 0 0 0 1px rgba(255, 215, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

/* 动态边框光效 */
.card-face::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(
        45deg,
        #FFD700,
        #FFA500,
        #FFD700,
        #FF8C00,
        #FFD700
    );
    border-radius: 20px;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s;
    animation: rotateGradient 4s linear infinite;
}

@keyframes rotateGradient {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.yellowcard:hover .card-face::before {
    opacity: 0.6;
}

/* 金属质感纹理 */
.card-texture {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.02) 2px,
            rgba(255, 255, 255, 0.02) 4px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.02) 2px,
            rgba(255, 255, 255, 0.02) 4px
        );
    border-radius: 20px;
}

/* EMV芯片 */
.card-chip {
    position: absolute;
    top: 60px;
    left: 60px;
    width: 50px;
    height: 40px;
    background: linear-gradient(
        135deg,
        #FFD700 0%,
        #FFC700 25%,
        #FFB300 50%,
        #FFA500 75%,
        #FFD700 100%
    );
    border-radius: 8px;
    overflow: hidden;
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.3),
        inset 0 -1px 0 rgba(255, 255, 255, 0.3),
        0 2px 8px rgba(255, 215, 0, 0.3);
}

/* 芯片线条 */
.card-chip::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(90deg, transparent 40%, rgba(0, 0, 0, 0.1) 50%, transparent 60%),
        linear-gradient(0deg, transparent 40%, rgba(0, 0, 0, 0.1) 50%, transparent 60%);
    background-size: 100% 100%;
}

/* 芯片接触点 */
.card-chip::after {
    content: '';
    position: absolute;
    top: 30%;
    left: 20%;
    width: 60%;
    height: 40%;
    background: repeating-linear-gradient(
        90deg,
        #FFD700,
        #FFD700 2px,
        #FFA500 2px,
        #FFA500 4px
    );
    border-radius: 2px;
}

/* 卡号 */
.card-number {
    position: absolute;
    bottom: 90px;
    left: 60px;
    font-size: 22px;
    letter-spacing: 4px;
    color: rgba(255, 255, 255, 0.9);
    font-family: 'Courier New', 'Consolas', monospace;
    font-weight: 500;
    text-shadow:
        0 1px 2px rgba(0, 0, 0, 0.8),
        0 0 10px rgba(255, 255, 255, 0.1);
}

/* YELLOWCARD品牌名 */
.card-brand {
    position: absolute;
    bottom: 35px;
    left: 60px;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 3px;
    color: transparent;
    text-transform: uppercase;
    background: linear-gradient(
        135deg,
        #FFD700 0%,
        #FFED4E 50%,
        #FFD700 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow:
        0 0 30px rgba(255, 215, 0, 0.5);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

/* 装饰性图案 */
.card-decorative {
    position: absolute;
    top: 0;
    right: -50px;
    width: 300px;
    height: 100%;
    opacity: 0.08;
    background:
        radial-gradient(circle at 100% 50%, #FFD700 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #FFA500 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, #FFD700 0%, transparent 40%);
    border-radius: 0 20px 20px 0;
}

/* 全息扫光效果 */
.card-hologram {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.2) 50%,
        transparent 60%
    );
    border-radius: 20px;
    animation: shimmer 3s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .yellowcard-wrapper {
        width: 320px;
        height: 200px;
    }

    .card-chip {
        width: 40px;
        height: 32px;
        top: 45px;
        left: 45px;
    }

    .card-number {
        font-size: 16px;
        bottom: 65px;
        left: 45px;
    }

    .card-brand {
        font-size: 20px;
        bottom: 25px;
        left: 45px;
    }
}

@media (max-width: 480px) {
    .yellowcard-wrapper {
        width: 280px;
        height: 175px;
    }

    .card-chip {
        width: 35px;
        height: 28px;
        top: 40px;
        left: 40px;
    }

    .card-number {
        font-size: 14px;
        bottom: 55px;
        left: 40px;
        letter-spacing: 3px;
    }

    .card-brand {
        font-size: 18px;
        bottom: 20px;
        left: 40px;
        letter-spacing: 2px;
    }
}

/* ===========================
   8. 通用容器和布局
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

/* ===========================
   9. 卡片系统优化 - 玻璃态2.0
   =========================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 24px;
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* 卡片光泽效果 */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent);
}

.card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.feature-card {
    text-align: center;
}

.icon-box {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 165, 0, 0.05) 100%);
    border-radius: 20px;
    font-size: 2rem;
    color: var(--primary-gold);
    transition: var(--transition-base);
}

.card:hover .icon-box {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 165, 0, 0.1) 100%);
}

/* ===========================
   10. 网格系统
   =========================== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* ===========================
   11. Timeline 时间线优化
   =========================== */
.timeline {
    position: relative;
    padding: var(--spacing-xl) 0;
}

.timeline-item {
    position: relative;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    transition: var(--transition-base);
}

.timeline-item:hover {
    transform: translateX(10px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.step-num {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-orange) 100%);
    color: var(--bg-primary);
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

/* ===========================
   12. 费率展示优化
   =========================== */
.fee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.fee-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 20px;
    transition: var(--transition-base);
}

.fee-item:hover {
    transform: scale(1.05);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.fee-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.fee-value {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===========================
   13. 对比表格优化
   =========================== */
.compare-list {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 24px;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.compare-row {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-default);
    transition: var(--transition-base);
}

.compare-row:last-child {
    border-bottom: none;
}

.compare-row:hover {
    background: rgba(255, 215, 0, 0.03);
}

.compare-feature {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}

.compare-vals {
    display: flex;
    gap: var(--spacing-xl);
}

.val {
    flex: 1;
}

.val .label {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.val.us .data {
    color: var(--primary-gold);
    font-weight: 700;
    font-size: 1.2rem;
}

.val.them .data {
    color: var(--text-muted);
    text-decoration: line-through;
    opacity: 0.5;
}

/* ===========================
   14. 安全区块优化
   =========================== */
.security-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.point {
    display: flex;
    align-items: start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    transition: var(--transition-base);
}

.point:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.point ion-icon {
    font-size: 2rem;
    color: var(--primary-gold);
    flex-shrink: 0;
}

/* ===========================
   15. 支持区块优化
   =========================== */
.support-box {
    background: linear-gradient(135deg, var(--bg-card), rgba(255, 215, 0, 0.02));
    border: 1px solid var(--border-gold);
    border-radius: 24px;
    padding: var(--spacing-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.support-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.icon-header {
    font-size: 3rem;
    color: var(--primary-gold);
    margin-bottom: var(--spacing-lg);
}

.support-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.support-tags span {
    padding: 8px 16px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid var(--border-gold);
    border-radius: 100px;
    font-size: 0.9rem;
    color: var(--primary-gold);
}

/* ===========================
   16. CTA区块优化
   =========================== */
.cta-section {
    padding: var(--spacing-3xl) 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.05) 0%, transparent 70%);
}

/* ===========================
   17. Footer优化
   =========================== */
footer {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-default);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

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

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===========================
   18. 悬浮客服按钮优化
   =========================== */
.fixed-support {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-orange) 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: var(--bg-primary);
    box-shadow:
        0 10px 30px rgba(255, 215, 0, 0.3),
        0 5px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 900;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3), 0 5px 15px rgba(0, 0, 0, 0.2); }
    50% { box-shadow: 0 10px 40px rgba(255, 215, 0, 0.5), 0 5px 20px rgba(0, 0, 0, 0.3); }
}

.fixed-support:hover {
    transform: scale(1.1) rotate(-10deg);
}

/* ===========================
   19. 响应式设计优化
   =========================== */
@media (max-width: 768px) {
    :root {
        --spacing-3xl: 64px;
    }

    .desktop-only {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
        min-height: auto;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-text {
        order: 2;
        text-align: center;
    }

    .hero-visual {
        order: 1;
    }

    .hero-badges {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-card-img {
        max-width: 350px;
    }

    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (min-width: 769px) {
    .menu-toggle,
    .mobile-menu-overlay {
        display: none;
    }

    .timeline {
        display: flex;
        gap: var(--spacing-lg);
    }

    .timeline-item {
        flex: 1;
        margin-bottom: 0;
    }

    .compare-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .compare-feature {
        margin-bottom: 0;
        width: 30%;
    }

    .compare-vals {
        width: 60%;
    }
}

/* ===========================
   20. 动画增强
   =========================== */
/* 滚动显示动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.shimmer {
    animation: shimmer 2s infinite;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    background-size: 1000px 100%;
}

/* ===========================
   21. 辅助类
   =========================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* 渐变文字 */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 高亮 */
.highlight-yellow {
    color: var(--primary-gold);
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.zh-inline {
    display: inline-block;
    margin-left: var(--spacing-xs);
}

/* 限制卡片特殊样式 */
.limit-card h3 {
    color: var(--primary-gold);
    margin-bottom: var(--spacing-lg);
}

.limit-card ul {
    list-style: none;
}

.limit-card ul li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.limit-card ul li ion-icon {
    color: var(--primary-gold);
    font-size: 1.2rem;
}

.highlight-border {
    border: 2px solid var(--border-gold);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, transparent 100%);
}

/* 安全提示文字 */
.security-note {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(255, 215, 0, 0.05);
    border-left: 4px solid var(--primary-gold);
    border-radius: 8px;
    color: var(--text-secondary);
}

.compare-footer-text {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
}