/**
 * CBS Capital Barrier System - Theme Styles
 * 资本护栏池系统样式
 * Version: 1.0.0
 */

/* ====================================
   CSS Variables / 设计系统变量
   ==================================== */
:root {
    /* Primary Colors - 深蓝金融风格 */
    --cbs-primary: #1a365d;
    --cbs-primary-light: #2c5282;
    --cbs-primary-dark: #0f2744;
    
    /* Accent Colors - 金色点缀 */
    --cbs-gold: #ecc94b;
    --cbs-gold-light: #faf089;
    --cbs-gold-dark: #d69e2e;
    
    /* Status Colors */
    --cbs-success: #38a169;
    --cbs-warning: #ed8936;
    --cbs-danger: #e53e3e;
    --cbs-info: #3182ce;
    
    /* Neutral Colors */
    --cbs-white: #ffffff;
    --cbs-gray-50: #f7fafc;
    --cbs-gray-100: #edf2f7;
    --cbs-gray-200: #e2e8f0;
    --cbs-gray-300: #cbd5e0;
    --cbs-gray-400: #a0aec0;
    --cbs-gray-500: #718096;
    --cbs-gray-600: #4a5568;
    --cbs-gray-700: #2d3748;
    --cbs-gray-800: #1a202c;
    --cbs-gray-900: #171923;
    
    /* Typography */
    --cbs-font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --cbs-font-mono: 'Fira Code', 'SF Mono', monospace;
    
    /* Spacing */
    --cbs-space-xs: 4px;
    --cbs-space-sm: 8px;
    --cbs-space-md: 16px;
    --cbs-space-lg: 24px;
    --cbs-space-xl: 32px;
    --cbs-space-2xl: 48px;
    --cbs-space-3xl: 64px;
    
    /* Border Radius */
    --cbs-radius-sm: 4px;
    --cbs-radius-md: 8px;
    --cbs-radius-lg: 12px;
    --cbs-radius-xl: 16px;
    --cbs-radius-full: 9999px;
    
    /* Shadows */
    --cbs-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --cbs-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --cbs-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --cbs-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --cbs-transition-fast: 150ms ease;
    --cbs-transition-normal: 250ms ease;
    --cbs-transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--cbs-font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--cbs-gray-700);
    background: linear-gradient(135deg, var(--cbs-gray-50) 0%, var(--cbs-gray-100) 100%);
    min-height: 100vh;
}

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

a:hover {
    color: var(--cbs-primary-light);
}

/* ====================================
   Layout
   ==================================== */
.cbs-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--cbs-space-md);
}

.cbs-section {
    padding: var(--cbs-space-3xl) 0;
}

/* ====================================
   Header / Navigation
   ==================================== */
.cbs-header {
    background: linear-gradient(135deg, var(--cbs-primary) 0%, var(--cbs-primary-dark) 100%);
    padding: var(--cbs-space-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--cbs-shadow-lg);
}

.cbs-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cbs-header__logo {
    display: flex;
    align-items: center;
    gap: var(--cbs-space-sm);
}

.cbs-header__logo-icon {
    width: 40px;
    height: 40px;
    background: var(--cbs-gold);
    border-radius: var(--cbs-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.cbs-header__logo-text {
    color: var(--cbs-white);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.cbs-header__nav {
    display: flex;
    gap: var(--cbs-space-lg);
}

.cbs-header__nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    padding: var(--cbs-space-sm) var(--cbs-space-md);
    border-radius: var(--cbs-radius-md);
    transition: all var(--cbs-transition-fast);
}

.cbs-header__nav-link:hover {
    color: var(--cbs-white);
    background: rgba(255, 255, 255, 0.1);
}

.cbs-header__actions {
    display: flex;
    gap: var(--cbs-space-sm);
}

/* ====================================
   Buttons
   ==================================== */
.cbs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--cbs-space-sm);
    padding: var(--cbs-space-sm) var(--cbs-space-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--cbs-radius-md);
    cursor: pointer;
    transition: all var(--cbs-transition-fast);
    text-decoration: none;
}

.cbs-btn--primary {
    background: var(--cbs-gold);
    color: var(--cbs-primary-dark);
}

.cbs-btn--primary:hover {
    background: var(--cbs-gold-light);
    transform: translateY(-2px);
    box-shadow: var(--cbs-shadow-md);
}

.cbs-btn--secondary {
    background: var(--cbs-white);
    color: var(--cbs-primary);
    border: 2px solid var(--cbs-primary);
}

.cbs-btn--secondary:hover {
    background: var(--cbs-primary);
    color: var(--cbs-white);
}

.cbs-btn--outline {
    background: transparent;
    color: var(--cbs-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.cbs-btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--cbs-white);
}

.cbs-btn--lg {
    padding: var(--cbs-space-md) var(--cbs-space-xl);
    font-size: 1.0625rem;
}

/* ====================================
   Hero Section
   ==================================== */
.cbs-hero {
    background: linear-gradient(135deg, var(--cbs-primary) 0%, var(--cbs-primary-dark) 50%, #0a1628 100%);
    color: var(--cbs-white);
    padding: var(--cbs-space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cbs-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect fill="url(%23grid)" width="100" height="100"/></svg>');
    opacity: 0.5;
}

.cbs-hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--cbs-space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.cbs-hero__content {
    max-width: 560px;
}

.cbs-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cbs-space-sm);
    background: rgba(236, 201, 75, 0.15);
    color: var(--cbs-gold);
    padding: var(--cbs-space-xs) var(--cbs-space-md);
    border-radius: var(--cbs-radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--cbs-space-lg);
}

.cbs-hero__title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--cbs-space-lg);
    letter-spacing: -1px;
}

.cbs-hero__title span {
    color: var(--cbs-gold);
}

.cbs-hero__desc {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--cbs-space-xl);
    line-height: 1.8;
}

.cbs-hero__actions {
    display: flex;
    gap: var(--cbs-space-md);
    margin-bottom: var(--cbs-space-xl);
}

.cbs-hero__stats {
    display: flex;
    gap: var(--cbs-space-xl);
}

.cbs-hero__stat {
    text-align: left;
}

.cbs-hero__stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--cbs-gold);
    display: block;
}

.cbs-hero__stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.cbs-hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cbs-hero__card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--cbs-radius-xl);
    padding: var(--cbs-space-xl);
    width: 100%;
    max-width: 400px;
}

/* ====================================
   Feature Cards
   ==================================== */
.cbs-features {
    padding: var(--cbs-space-3xl) 0;
}

.cbs-features__title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--cbs-primary);
    margin-bottom: var(--cbs-space-2xl);
}

.cbs-features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cbs-space-lg);
}

.cbs-feature-card {
    background: var(--cbs-white);
    border-radius: var(--cbs-radius-lg);
    padding: var(--cbs-space-xl);
    box-shadow: var(--cbs-shadow-md);
    transition: all var(--cbs-transition-normal);
    border: 1px solid var(--cbs-gray-200);
}

.cbs-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--cbs-shadow-xl);
    border-color: var(--cbs-gold);
}

.cbs-feature-card__icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--cbs-primary) 0%, var(--cbs-primary-light) 100%);
    border-radius: var(--cbs-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--cbs-space-lg);
}

.cbs-feature-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--cbs-primary);
    margin-bottom: var(--cbs-space-sm);
}

.cbs-feature-card__desc {
    color: var(--cbs-gray-500);
    line-height: 1.7;
}

/* ====================================
   Level Cards / 会员等级
   ==================================== */
.cbs-levels {
    background: var(--cbs-gray-100);
    padding: var(--cbs-space-3xl) 0;
}

.cbs-levels__title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--cbs-primary);
    margin-bottom: var(--cbs-space-sm);
}

.cbs-levels__subtitle {
    text-align: center;
    color: var(--cbs-gray-500);
    margin-bottom: var(--cbs-space-2xl);
}

.cbs-levels__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cbs-space-lg);
}

.cbs-level-card {
    background: var(--cbs-white);
    border-radius: var(--cbs-radius-lg);
    padding: var(--cbs-space-xl);
    text-align: center;
    border: 2px solid var(--cbs-gray-200);
    transition: all var(--cbs-transition-normal);
    position: relative;
}

.cbs-level-card--featured {
    border-color: var(--cbs-gold);
    box-shadow: 0 0 0 4px rgba(236, 201, 75, 0.1);
}

.cbs-level-card--featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--cbs-gold);
    color: var(--cbs-primary-dark);
    padding: 4px 12px;
    border-radius: var(--cbs-radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

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

.cbs-level-card__icon {
    font-size: 3rem;
    margin-bottom: var(--cbs-space-md);
}

.cbs-level-card__name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cbs-primary);
    margin-bottom: var(--cbs-space-sm);
}

.cbs-level-card__price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--cbs-gold-dark);
    margin-bottom: var(--cbs-space-md);
}

.cbs-level-card__price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--cbs-gray-500);
}

.cbs-level-card__features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--cbs-space-lg);
}

.cbs-level-card__features li {
    padding: var(--cbs-space-sm) 0;
    border-bottom: 1px solid var(--cbs-gray-100);
    display: flex;
    align-items: center;
    gap: var(--cbs-space-sm);
}

.cbs-level-card__features li::before {
    content: '✓';
    color: var(--cbs-success);
    font-weight: bold;
}

/* ====================================
   Insurance Section / 保险模块
   ==================================== */
.cbs-insurance {
    padding: var(--cbs-space-3xl) 0;
}

.cbs-insurance__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--cbs-space-lg);
}

.cbs-insurance-card {
    background: linear-gradient(135deg, var(--cbs-primary) 0%, var(--cbs-primary-light) 100%);
    color: var(--cbs-white);
    border-radius: var(--cbs-radius-lg);
    padding: var(--cbs-space-xl);
    position: relative;
    overflow: hidden;
}

.cbs-insurance-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: rgba(255, 255, 255, 0.05);
    transform: rotate(30deg);
}

.cbs-insurance-card__header {
    display: flex;
    align-items: center;
    gap: var(--cbs-space-md);
    margin-bottom: var(--cbs-space-lg);
    position: relative;
    z-index: 1;
}

.cbs-insurance-card__icon {
    font-size: 2.5rem;
}

.cbs-insurance-card__name {
    font-size: 1.5rem;
    font-weight: 700;
}

.cbs-insurance-card__rate {
    font-size: 0.875rem;
    opacity: 0.8;
}

.cbs-insurance-card__content {
    position: relative;
    z-index: 1;
}

.cbs-insurance-card__feature {
    display: flex;
    align-items: center;
    gap: var(--cbs-space-sm);
    margin-bottom: var(--cbs-space-sm);
    font-size: 0.9375rem;
}

/* ====================================
   Yield Section / 银生利
   ==================================== */
.cbs-yield {
    background: linear-gradient(135deg, var(--cbs-primary-dark) 0%, var(--cbs-primary) 100%);
    color: var(--cbs-white);
    padding: var(--cbs-space-3xl) 0;
}

.cbs-yield__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--cbs-space-3xl);
    align-items: center;
}

.cbs-yield__content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--cbs-space-lg);
}

.cbs-yield__content h2 span {
    color: var(--cbs-gold);
}

.cbs-yield__content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--cbs-space-xl);
    line-height: 1.8;
}

.cbs-yield__rates {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--cbs-radius-lg);
    padding: var(--cbs-space-xl);
}

.cbs-yield__rate-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--cbs-space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cbs-yield__rate-item:last-child {
    border-bottom: none;
}

.cbs-yield__rate-tier {
    font-weight: 600;
}

.cbs-yield__rate-range {
    font-size: 0.875rem;
    opacity: 0.7;
}

.cbs-yield__rate-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--cbs-gold);
}

/* ====================================
   Footer
   ==================================== */
.cbs-footer {
    background: var(--cbs-gray-900);
    color: var(--cbs-gray-400);
    padding: var(--cbs-space-3xl) 0 var(--cbs-space-xl);
}

.cbs-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--cbs-space-xl);
    margin-bottom: var(--cbs-space-2xl);
}

.cbs-footer__brand h3 {
    color: var(--cbs-white);
    font-size: 1.25rem;
    margin-bottom: var(--cbs-space-md);
}

.cbs-footer__brand p {
    line-height: 1.7;
}

.cbs-footer__column h4 {
    color: var(--cbs-white);
    font-size: 1rem;
    margin-bottom: var(--cbs-space-md);
}

.cbs-footer__column ul {
    list-style: none;
}

.cbs-footer__column li {
    margin-bottom: var(--cbs-space-sm);
}

.cbs-footer__column a {
    color: var(--cbs-gray-400);
    transition: color var(--cbs-transition-fast);
}

.cbs-footer__column a:hover {
    color: var(--cbs-gold);
}

.cbs-footer__bottom {
    border-top: 1px solid var(--cbs-gray-800);
    padding-top: var(--cbs-space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 1024px) {
    .cbs-hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cbs-hero__content {
        max-width: 100%;
    }
    
    .cbs-hero__actions {
        justify-content: center;
    }
    
    .cbs-hero__stats {
        justify-content: center;
    }
    
    .cbs-hero__visual {
        display: none;
    }
    
    .cbs-features__grid,
    .cbs-levels__grid {
        grid-template-columns: 1fr;
    }
    
    .cbs-yield__inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .cbs-header__nav {
        display: none;
    }
    
    .cbs-hero__title {
        font-size: 2rem;
    }
    
    .cbs-hero__stats {
        flex-direction: column;
        gap: var(--cbs-space-md);
    }
    
    .cbs-insurance__grid {
        grid-template-columns: 1fr;
    }
    
    .cbs-footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cbs-footer__bottom {
        flex-direction: column;
        gap: var(--cbs-space-md);
        text-align: center;
    }
}