/* ========================================
   Bento UI Design System
   Colorful Cards on Black Background
   ======================================== */

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

:root {
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: rgba(255, 255, 255, 0.03);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* Border & Shadow */
    --border-radius: 28px;
    --border-radius-sm: 16px;
    --card-border: 1px solid rgba(255, 255, 255, 0.08);
    
    /* Spacing */
    --gap: 20px;
    --card-padding: 28px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Gradient Definitions */
[data-color="gradient-purple"] {
    --gradient-start: #6366f1;
    --gradient-end: #a855f7;
    --glow-color: rgba(99, 102, 241, 0.4);
}

[data-color="gradient-orange"] {
    --gradient-start: #f97316;
    --gradient-end: #f59e0b;
    --glow-color: rgba(249, 115, 22, 0.4);
}

[data-color="gradient-blue"] {
    --gradient-start: #3b82f6;
    --gradient-end: #06b6d4;
    --glow-color: rgba(59, 130, 246, 0.4);
}

[data-color="gradient-pink"] {
    --gradient-start: #ec4899;
    --gradient-end: #f43f5e;
    --glow-color: rgba(236, 72, 153, 0.4);
}

[data-color="gradient-green"] {
    --gradient-start: #10b981;
    --gradient-end: #84cc16;
    --glow-color: rgba(16, 185, 129, 0.4);
}

[data-color="gradient-cyan"] {
    --gradient-start: #06b6d4;
    --gradient-end: #22d3ee;
    --glow-color: rgba(6, 182, 212, 0.4);
}

[data-color="gradient-yellow"] {
    --gradient-start: #eab308;
    --gradient-end: #facc15;
    --glow-color: rgba(234, 179, 8, 0.4);
}

[data-color="gradient-indigo"] {
    --gradient-start: #4f46e5;
    --gradient-end: #6366f1;
    --glow-color: rgba(79, 70, 229, 0.4);
}

[data-color="gradient-gray"] {
    --gradient-start: #374151;
    --gradient-end: #4b5563;
    --glow-color: rgba(55, 65, 81, 0.4);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Ambient Background Glow */
.ambient-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.ambient-glow::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(236, 72, 153, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 50%);
    animation: ambientMove 20s ease-in-out infinite;
}

@keyframes ambientMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(120deg); }
    66% { transform: translate(-1%, 1%) rotate(240deg); }
}

/* Main Container */
.main {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* Bento Grid Layout */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(180px, auto);
    gap: var(--gap);
}

/* Bento Card Base Styles */
.bento-card {
    position: relative;
    background: var(--bg-card);
    border: var(--card-border);
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.bento-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius);
    padding: 1px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.6;
    transition: opacity var(--transition-normal);
}

.bento-card:hover {
    transform: translateY(-4px) scale(1.01);
}

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

/* Card Glow Effect */
.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
    filter: blur(40px);
}

.bento-card:hover .card-glow {
    opacity: 0.5;
}

.card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Card Size Variations */
.hero-card {
    grid-column: span 2;
    grid-row: span 2;
}

.app-card {
    grid-column: span 2;
    grid-row: span 2;
}

.skills-card {
    grid-column: span 1;
    grid-row: span 2;
}

.projects-card {
    grid-column: span 1;
    grid-row: span 2;
}

.blog-card {
    grid-column: span 1;
    grid-row: span 1;
}

.contact-card {
    grid-column: span 1;
    grid-row: span 1;
}

.opensource-card {
    grid-column: span 1;
    grid-row: span 1;
}

.about-card {
    grid-column: span 1;
    grid-row: span 1;
}

.nav-card {
    grid-column: span 2;
    grid-row: span 1;
}

/* Hero Card Styles */
.profile-section {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

.avatar-container {
    position: relative;
    flex-shrink: 0;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid transparent;
    background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
                linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) border-box;
}

.status-indicator {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 16px;
    height: 16px;
    background: #10b981;
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.profile-title {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 28px;
    flex: 1;
}

.hero-stats {
    display: flex;
    gap: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* App Card Styles */
.app-badge {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    align-self: flex-start;
}

.app-icon-large {
    width: 100px;
    height: 100px;
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.app-icon-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.app-tagline {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex: 1;
}

.app-meta {
    display: flex;
    gap: 20px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.meta-item svg {
    color: var(--gradient-start);
}

/* Card Title */
.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* Skills Card */
.skills-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(4px);
}

.skill-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--dot-color);
    box-shadow: 0 0 10px var(--dot-color);
}

.skill-name {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Projects Card */
.project-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.project-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.project-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(4px);
}

.project-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--icon-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.project-info {
    display: flex;
    flex-direction: column;
}

.project-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Blog Card */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.blog-item {
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.blog-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(4px);
}

.blog-tag {
    display: inline-block;
    padding: 4px 10px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.blog-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.blog-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Contact Card */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: scale(1.05);
    color: var(--text-primary);
}

.contact-item svg {
    width: 24px;
    height: 24px;
}

.contact-grid.single {
    grid-template-columns: 1fr;
}

.contact-grid.single .contact-item {
    aspect-ratio: auto;
    padding: 16px 20px;
    gap: 12px;
    text-decoration: none;
}

.contact-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.contact-grid.single .contact-item:hover .contact-text {
    color: var(--text-primary);
}

/* Open Source Card */
.opensource-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.os-stat {
    display: flex;
    flex-direction: column;
}

.os-number {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.os-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.contribution-graph {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 60px;
}

.contrib-bar {
    flex: 1;
    height: var(--height);
    background: linear-gradient(to top, var(--gradient-start), var(--gradient-end));
    border-radius: 4px 4px 0 0;
    opacity: 0.8;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.contrib-bar:hover {
    opacity: 1;
    transform: scaleY(1.1);
}

/* About Card */
.about-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

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

.interest-tag {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.interest-tag:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Navigation Card */
.nav-card .card-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.footer-nav {
    display: flex;
    gap: 24px;
}

.nav-link-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link-item::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transition: width var(--transition-fast);
}

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

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

.footer-info {
    text-align: right;
}

.copyright {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.icp {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.icp a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.icp a:hover {
    color: var(--text-secondary);
}

.beian {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.beian a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.beian a:hover {
    color: var(--text-secondary);
}

.beian-icon,
.icp-icon {
    width: 16px;
    height: 16px;
    object-fit: contain;
    margin-right: 6px;
}

.icp {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

@media (max-width: 600px) {
    .beian {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .icp {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .icp-icon,
    .beian-icon {
        margin-right: 4px;
    }
}

/* Entrance Animations */
.bento-card {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.bento-card.animate {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
}

.bento-card.animate.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Staggered Animation Delays */
.bento-card:nth-child(1) { transition-delay: 0ms; }
.bento-card:nth-child(2) { transition-delay: 50ms; }
.bento-card:nth-child(3) { transition-delay: 100ms; }
.bento-card:nth-child(4) { transition-delay: 150ms; }
.bento-card:nth-child(5) { transition-delay: 200ms; }
.bento-card:nth-child(6) { transition-delay: 250ms; }
.bento-card:nth-child(7) { transition-delay: 300ms; }
.bento-card:nth-child(8) { transition-delay: 350ms; }
.bento-card:nth-child(9) { transition-delay: 400ms; }

/* Responsive Design */
@media (max-width: 1200px) {
    .bento-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-card {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .app-card {
        grid-column: span 1;
        grid-row: span 2;
    }
    
    .nav-card {
        grid-column: span 3;
    }
}

@media (max-width: 900px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-card,
    .app-card {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .skills-card,
    .projects-card {
        grid-column: span 1;
        grid-row: span 2;
    }
    
    .nav-card {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .main {
        padding: 20px 16px;
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .bento-card {
        grid-column: span 1 !important;
        grid-row: span 1 !important;
        padding: 20px;
    }
    
    .hero-card {
        min-height: 380px;
    }
    
    .app-card {
        min-height: 320px;
    }
    
    .profile-section {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .nav-card .card-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-info {
        text-align: center;
    }
    
    .profile-name {
        font-size: 1.5rem;
    }
    
    .app-name {
        font-size: 1.5rem;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .bento-card {
        opacity: 1;
        transform: none;
    }
}

/* ========================================
   Privacy Page Specific Styles
   ======================================== */

.privacy-grid {
    grid-template-columns: repeat(3, 1fr);
}

.privacy-header-card {
    grid-column: span 2;
    grid-row: span 1;
    min-height: 280px;
}

.privacy-content-card {
    grid-column: span 1;
    grid-row: span 1;
}

.privacy-content-card.wide {
    grid-column: span 2;
}

.privacy-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
}

.privacy-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.privacy-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.privacy-date {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.content-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.section-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--gradient-start);
    opacity: 0.8;
}

.content-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.content-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Info Tags */
.info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.info-tag {
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Data Collection Grid */
.data-collection-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.collection-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.collection-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(4px);
}

.collection-icon {
    font-size: 1.5rem;
}

.collection-info {
    display: flex;
    flex-direction: column;
}

.collection-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.collection-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Usage List */
.usage-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.usage-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.usage-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    margin-top: 8px;
    flex-shrink: 0;
}

.usage-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.usage-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Sharing Conditions */
.sharing-conditions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.condition-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.condition-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: white;
    flex-shrink: 0;
}

/* Security Features */
.security-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 8px;
}

.security-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.security-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.security-icon {
    font-size: 1.25rem;
}

.security-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Rights Grid */
.rights-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.right-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.right-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-4px);
}

.right-icon {
    font-size: 1.75rem;
}

.right-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.right-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.contact-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
}

.contact-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-value {
    font-size: 0.9375rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Privacy Page Responsive */
@media (max-width: 1200px) {
    .privacy-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .privacy-header-card {
        grid-column: span 2;
    }
    
    .privacy-content-card.wide {
        grid-column: span 2;
    }
    
    .rights-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .privacy-grid {
        grid-template-columns: 1fr;
    }
    
    .privacy-header-card,
    .privacy-content-card,
    .privacy-content-card.wide {
        grid-column: span 1;
    }
    
    .data-collection-grid {
        grid-template-columns: 1fr;
    }
    
    .rights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .privacy-title {
        font-size: 1.75rem;
    }
}

@media (max-width: 600px) {
    .rights-grid {
        grid-template-columns: 1fr;
    }
    
    .security-features {
        grid-template-columns: 1fr;
    }
    
    .privacy-header-card {
        min-height: auto;
    }
}

/* Static Beian Section */
.static-beian {
    position: relative;
    z-index: 20;
    background: var(--bg-secondary);
    border-top: var(--card-border);
    padding: 24px 20px;
    margin-top: 40px;
}

.beian-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.beian-container .icp {
    text-align: center;
}

.beian-container .beian {
    justify-content: center;
}

/* Dark Mode Optimization */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0a0a0a;
        --bg-secondary: #111111;
    }
}