/* ========================================
   Piggy Landing Page - 红黑科技风格
   ======================================== */

/* CSS 变量定义 */
:root {
    /* 颜色系统 */
    --color-primary: #1a1a1a;
    --color-primary-dark: #0d0d0d;
    --color-accent: #8B0000;
    --color-accent-light: #a52a2a;
    --color-highlight: #B8860B;
    --color-highlight-light: #d4a017;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-dark: #666666;
    --color-border: #333333;
    --color-gradient: linear-gradient(135deg, #8B0000, #B8860B);
    
    /* 断点 */
    --breakpoint-mobile: 767px;
    --breakpoint-tablet: 1199px;
    --breakpoint-desktop: 1200px;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --easing-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-primary);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
}

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

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    position: relative;
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gradient);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 汉堡菜单 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition-normal);
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ========================================
   Hero 首屏
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

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

.hero-fallback {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent) 50%, var(--color-primary-dark) 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-video.error + .hero-fallback {
    display: block;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-tagline {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease 0.15s both;
}

.hero-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    animation: fadeInUp 1s ease 0.45s both;
}

.hero-cta {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: 4px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hero-cta.primary {
    background: var(--color-gradient);
    color: var(--color-text);
}

.hero-cta.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.4);
}

.hero-cta.secondary {
    background: transparent;
    color: var(--color-accent-light);
    border: 1px solid var(--color-accent);
}

.hero-cta.secondary:hover {
    background: rgba(139, 0, 0, 0.1);
    transform: translateY(-3px);
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: fadeInUpCentered 1s ease 0.6s both;
}

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

.scroll-arrow {
    width: 24px;
    height: 24px;
    margin: 0 auto;
    border-right: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    transform: rotate(45deg);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 1; }
    50% { transform: rotate(45deg) translate(5px, 5px); opacity: 0.5; }
}

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

@keyframes fadeInUpCentered {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}


/* ========================================
   功能卡片
   ======================================== */
.features {
    padding: var(--spacing-xl) 0;
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}

/* 红色分割线 */
.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.section-title {
    text-align: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background: #2a2a2a;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

/* 卡片发光效果背景 */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(139, 0, 0, 0.1), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--color-accent);
    box-shadow: 0 0 30px rgba(139, 0, 0, 0.3), 0 20px 40px rgba(0, 0, 0, 0.4);
    background: #333333;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 0, 0, 0.1);
    border-radius: 50%;
    color: var(--color-accent);
    transition: transform var(--transition-normal), background var(--transition-normal), color var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--color-gradient);
    color: var(--color-text);
    box-shadow: 0 0 20px rgba(139, 0, 0, 0.4);
}

.feature-icon svg {
    width: 48px;
    height: 48px;
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    transition: color var(--transition-normal);
}

.feature-card:hover .feature-title {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.8;
    transition: color var(--transition-normal);
}

.feature-card:hover .feature-desc {
    color: var(--color-text);
}

/* 功能列表样式 */
.feature-list {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    text-align: left;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.feature-list li::before {
    content: '✓';
    color: var(--color-highlight);
    font-weight: bold;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.feature-card:hover .feature-list li {
    color: var(--color-text);
}

/* 功能卡片入场动画 */
.feature-card[data-animate] {
    opacity: 0;
    transform: translateY(40px);
}

.feature-card[data-animate].animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s var(--easing-smooth), transform 0.6s var(--easing-smooth), border-color var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.feature-card[data-animate].animate-in:hover {
    transform: translateY(-8px) scale(1.02);
}

/* 交错动画延迟 */
.feature-card[data-animate]:nth-child(1) { transition-delay: 0s; }
.feature-card[data-animate]:nth-child(2) { transition-delay: 0.1s; }
.feature-card[data-animate]:nth-child(3) { transition-delay: 0.2s; }

/* ========================================
   工具图片画廊
   ======================================== */
.tools {
    padding: var(--spacing-xl) 0;
    background: var(--color-primary-dark);
    position: relative;
    overflow: hidden;
}

/* 红色分割线 */
.tools::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.tool-item {
    position: relative;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.tool-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.tool-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.tool-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(139, 0, 0, 0.8) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.tool-item:hover .tool-image {
    transform: scale(1.1);
}

.tool-item:hover .tool-overlay {
    opacity: 1;
}

/* ========================================
   价格方案
   ======================================== */
.pricing {
    padding: var(--spacing-xl) 0;
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}

/* 红色分割线 */
.pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    align-items: start;
}

.pricing-card {
    position: relative;
    background: var(--color-primary-dark);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-card.recommended {
    border-color: var(--color-accent);
    transform: scale(1.05);
    box-shadow: 0 20px 60px rgba(139, 0, 0, 0.3);
}

/* Pricing Card Animation States */
.pricing-card {
    opacity: 0;
    transform: translateY(40px);
}

.pricing-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s var(--easing-smooth), transform 0.6s var(--easing-smooth), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card.animate-in:hover {
    transform: translateY(-5px);
}

/* Staggered Animation Delays */
.pricing-card:nth-child(1) { transition-delay: 0s; }
.pricing-card:nth-child(2) { transition-delay: 0.15s; }
.pricing-card:nth-child(3) { transition-delay: 0.3s; }

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gradient);
    color: var(--color-text);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 20px;
}

.pricing-badge.limited {
    background: var(--color-highlight);
}

.pricing-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.pricing-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.pricing-price .currency {
    font-size: var(--font-size-lg);
    color: var(--color-accent);
}

.pricing-price .amount {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-price .period {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-save {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-highlight);
}

.pricing-scarcity {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-highlight-light);
    animation: pulse 2s infinite;
}

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

.pricing-features {
    margin-bottom: var(--spacing-md);
    text-align: left;
}

.pricing-features li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.pricing-cta {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 50px;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.pricing-cta:hover {
    background: var(--color-gradient);
    border-color: transparent;
    transform: translateY(-2px);
}

.pricing-card.recommended .pricing-cta {
    background: var(--color-gradient);
    border-color: transparent;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-md);
    background: var(--color-primary-dark);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.footer-desc {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.footer-contact p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.contact-label {
    color: var(--color-text-dark);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-icp {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    text-align: right;
}

.icp-link {
    font-size: var(--font-size-xs);
    color: var(--color-text-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.icp-link:hover {
    color: var(--color-accent);
}

.copyright, .icp {
    font-size: var(--font-size-xs);
    color: var(--color-text-dark);
}

/* ========================================
   响应式适配
   ======================================== */

/* 平板端 */
@media (max-width: 1199px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.recommended {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* 移动端 */
@media (max-width: 767px) {
    :root {
        --font-size-4xl: 2.5rem;
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.5rem;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(26, 26, 26, 0.98);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.recommended {
        grid-column: span 1;
        transform: none;
    }
    
    .pricing-card.recommended:hover {
        transform: translateY(-5px);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* ========================================
   订单确认页面
   ======================================== */
.order-confirmation {
    min-height: 100vh;
    padding: calc(60px + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.order-card {
    max-width: 600px;
    width: 100%;
    background: var(--color-primary-dark);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.order-header {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.order-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 0, 0, 0.1);
    border-radius: 50%;
    color: var(--color-accent);
}

.order-icon svg {
    width: 48px;
    height: 48px;
}

.order-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.order-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: var(--spacing-xs);
}

.order-price .currency {
    font-size: var(--font-size-lg);
    color: var(--color-accent);
}

.order-price .amount {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
}

.order-price .period {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.edu-price {
    font-size: var(--font-size-sm);
    color: var(--color-highlight);
    font-weight: 600;
}

.order-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.order-features li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.order-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.payment-methods {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    /* border: 1px solid var(--color-border); */
    border-radius: 8px;
}

.payment-methods h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.payment-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.payment-option:last-child {
    margin-bottom: 0;
}

.payment-option:hover {
    border-color: var(--color-highlight);
    background: rgba(184, 134, 11, 0.05);
}

.payment-option input[type="radio"] {
    margin-right: var(--spacing-sm);
    accent-color: var(--color-highlight);
    cursor: pointer;
}

.payment-option.selected {
    border-color: var(--color-highlight);
    background: rgba(184, 134, 11, 0.1);
}

.payment-option label {
    cursor: pointer;
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.payment-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-highlight);
    margin-right: 15px;
}

.payment-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.payment-icon svg {
    width: 100%;
    height: 100%;
}

.payment-name {
    flex: 1;
}

.order-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.order-summary .label {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
}

.order-summary .amount {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-highlight);
}

.confirm-payment-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gradient);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.confirm-payment-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.4);
}

.terms-notice {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-dark);
    margin-top: var(--spacing-sm);
}

/* 订单确认页面响应式 */
@media (max-width: 767px) {
    .order-confirmation {
        padding: calc(60px + var(--spacing-md)) var(--spacing-sm) var(--spacing-md);
    }

    .order-card {
        padding: var(--spacing-md);
    }

    .order-title {
        font-size: var(--font-size-xl);
    }

    .order-price .amount {
        font-size: var(--font-size-2xl);
    }

    .payment-methods {
        padding: var(--spacing-sm);
    }

    .payment-option {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .order-summary {
        padding: var(--spacing-sm);
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .order-summary .label,
    .order-summary .amount {
        font-size: var(--font-size-sm);
    }
}

/* ========================================
   支付弹窗样式
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    z-index: 2001;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--color-primary-dark);
    border: 1px solid var(--color-accent);
    border-radius: 16px;
    padding: var(--spacing-lg);
    box-shadow: 0 20px 60px rgba(139, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
}

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

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

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
    padding: 0;
}

.modal-close:hover {
    color: var(--color-accent);
}

.modal-body {
    text-align: center;
    padding: var(--spacing-md) 0;
}

.qr-code {
    width: 280px;
    height: 280px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--color-border);
    border-radius: 8px;
    display: block;
}

.payment-status {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.payment-amount {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
    background: var(--color-gradient);
    color: var(--color-text);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-text);
}

/* 支付弹窗响应式 */
@media (max-width: 767px) {
    .modal-content {
        width: 95%;
        padding: var(--spacing-md);
    }

    .qr-code {
        width: 240px;
        height: 240px;
    }

    .modal-footer {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}
/* ========================================
   结果页面样式
   ======================================== */
.result-page {
    min-height: 100vh;
    padding: calc(60px + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-card {
    max-width: 500px;
    width: 100%;
    background: var(--color-primary-dark);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.result-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.result-icon.success {
    background: rgba(139, 0, 0, 0.1);
    color: var(--color-accent);
}

.result-icon.failure {
    background: rgba(184, 134, 11, 0.1);
    color: var(--color-highlight);
}

.result-icon svg {
    width: 60px;
    height: 60px;
}

.result-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-message {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.result-info {
    padding: var(--spacing-md);
    background: rgba(139, 0, 0, 0.05);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.result-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

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

.wechat-id {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.wechat-id strong {
    color: var(--color-text);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.btn-text {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.btn-text:hover {
    color: var(--color-accent);
}

/* 结果页面响应式 */
@media (max-width: 767px) {
    .result-page {
        padding: calc(60px + var(--spacing-md)) var(--spacing-sm) var(--spacing-md);
    }

    .result-card {
        padding: var(--spacing-md);
    }

    .result-title {
        font-size: var(--font-size-xl);
    }

    .result-icon {
        width: 80px;
        height: 80px;
    }

    .result-icon svg {
        width: 48px;
        height: 48px;
    }

    .result-actions {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .result-info {
        padding: var(--spacing-sm);
    }

    .wechat-id strong {
        font-size: var(--font-size-base);
    }
}