/* ============================================
   im冷钱包 - 全站公共样式表
   深空蓝到极光紫科技感设计
   ============================================ */

/* === 基础重置与字体 === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
    --deep-space: #0a0e27;
    --space-blue: #0d1b3e;
    --aurora-purple: #6c3ce0;
    --aurora-blue: #3b82f6;
    --aurora-cyan: #06b6d4;
    --aurora-green: #10b981;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-hover: rgba(255, 255, 255, 0.1);
    --text-primary: #f0f4ff;
    --text-secondary: #94a3c8;
    --text-muted: #64748b;
    --accent-gradient: linear-gradient(135deg, #6c3ce0, #3b82f6, #06b6d4);
    --card-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    background: var(--deep-space);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* === 粒子背景 === */
.particle-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(108, 60, 224, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

/* === 容器 === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* === 头部导航 === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
}

.brand-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 800;
    color: #fff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
    background: var(--glass-hover);
}

.nav-download-btn {
    background: var(--accent-gradient) !important;
    color: #fff !important;
    padding: 8px 20px !important;
    border-radius: 20px !important;
    font-weight: 600 !important;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === 搜索框 === */
.search-bar {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--glass-border);
    padding: 10px 0;
    margin-top: 70px;
}

.search-wrapper {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    padding: 0 20px;
}

.search-input {
    width: 100%;
    padding: 12px 50px 12px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.search-input:focus {
    border-color: var(--aurora-blue);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--aurora-blue);
    cursor: pointer;
    font-size: 1.1rem;
}

.search-result-msg {
    text-align: center;
    padding: 8px;
    color: var(--aurora-cyan);
    font-size: 0.85rem;
    display: none;
}

/* === 面包屑 === */
.breadcrumb {
    padding: 15px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--aurora-blue);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 8px;
}

/* === Hero 区域 === */
.hero-section {
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
}

.hero-section.with-search {
    padding-top: 40px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(108, 60, 224, 0.2);
    border: 1px solid rgba(108, 60, 224, 0.3);
    border-radius: 20px;
    font-size: 0.8rem;
    color: #a78bfa;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, #a78bfa, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* === 按钮 === */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 60, 224, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--glass-hover);
    border-color: var(--aurora-blue);
}

/* === 磨砂玻璃卡片 === */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--card-radius);
    padding: 30px;
    transition: var(--transition);
}

.glass-card:hover {
    background: var(--glass-hover);
    border-color: rgba(108, 60, 224, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* === 内容区块 === */
.section {
    padding: 80px 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--aurora-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* === 网格布局 === */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* === 新闻/文章卡片 === */
.news-card {
    overflow: hidden;
}

.news-card .card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
    margin: -30px -30px 20px;
    width: calc(100% + 60px);
}

.news-card .card-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(108, 60, 224, 0.2);
    border-radius: 4px;
    font-size: 0.75rem;
    color: #a78bfa;
    margin-bottom: 10px;
}

.news-card .card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-card .card-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-card .card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

/* === 仪表盘 === */
.dashboard {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.dashboard-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.dashboard-live {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--aurora-green);
}

.dashboard-live::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--aurora-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.dash-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.dash-item .dash-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.dash-item .dash-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Inter', monospace;
}

.dash-item .dash-change {
    font-size: 0.8rem;
    margin-top: 4px;
}

.dash-change.up { color: var(--aurora-green); }
.dash-change.down { color: #ef4444; }

/* === 价格动画 === */
@keyframes priceFlicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.price-animate {
    animation: priceFlicker 3s ease-in-out infinite;
}

/* === 视频卡片 === */
.video-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.video-card .video-thumb {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 12px;
    transition: var(--transition);
}

.video-card:hover .video-thumb {
    transform: scale(1.05);
}

.video-card .play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: var(--transition);
    border-radius: 12px;
}

.video-card:hover .play-overlay {
    opacity: 1;
}

.play-btn-icon {
    width: 60px;
    height: 60px;
    background: rgba(108, 60, 224, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-btn-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent #fff;
    margin-left: 4px;
}

.video-card .video-info {
    padding: 15px 0 0;
}

.video-card .video-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.video-card .video-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === 专家卡片 === */
.expert-card {
    text-align: center;
    padding: 30px 20px;
}

.expert-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-gradient);
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
}

.expert-name {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.expert-title {
    font-size: 0.8rem;
    color: var(--aurora-blue);
    margin-bottom: 12px;
}

.expert-bio {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === 用户评价 === */
.review-card {
    padding: 25px;
}

.review-stars {
    color: #fbbf24;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.review-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
    font-style: italic;
}

.review-author {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

/* === 分享按钮 === */
.share-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px 0;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
    cursor: pointer;
}

.share-btn:hover {
    background: var(--glass-hover);
    color: var(--text-primary);
    border-color: var(--aurora-blue);
}

/* === 步骤条 === */
.step-bar {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
    overflow-x: auto;
    padding: 10px 0;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.step-item:first-child {
    border-radius: 12px 0 0 12px;
}

.step-item:last-child {
    border-radius: 0 12px 12px 0;
}

.step-item.active {
    background: rgba(108, 60, 224, 0.2);
    border-color: var(--aurora-purple);
    color: var(--text-primary);
}

.step-item .step-num {
    width: 24px;
    height: 24px;
    background: var(--glass-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.step-item.active .step-num {
    background: var(--aurora-purple);
    color: #fff;
}

.step-content {
    display: none;
}

.step-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === 三层加密动效 === */
.encryption-layers {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    padding: 40px 0;
    flex-wrap: wrap;
}

.enc-layer {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    padding: 20px;
}

.enc-layer-1 {
    background: rgba(108, 60, 224, 0.15);
    border: 2px solid rgba(108, 60, 224, 0.4);
    animation: layerPulse1 3s ease-in-out infinite;
}

.enc-layer-2 {
    background: rgba(59, 130, 246, 0.15);
    border: 2px solid rgba(59, 130, 246, 0.4);
    animation: layerPulse2 3s ease-in-out infinite 1s;
}

.enc-layer-3 {
    background: rgba(6, 182, 212, 0.15);
    border: 2px solid rgba(6, 182, 212, 0.4);
    animation: layerPulse3 3s ease-in-out infinite 2s;
}

@keyframes layerPulse1 {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(108, 60, 224, 0.2); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(108, 60, 224, 0.4); }
}

@keyframes layerPulse2 {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(59, 130, 246, 0.2); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(59, 130, 246, 0.4); }
}

@keyframes layerPulse3 {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(6, 182, 212, 0.2); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(6, 182, 212, 0.4); }
}

.enc-layer .enc-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.enc-layer .enc-title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
}

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

.enc-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
    animation: arrowBlink 1.5s ease-in-out infinite;
}

@keyframes arrowBlink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* === 页脚 === */
.site-footer {
    background: rgba(10, 14, 39, 0.95);
    border-top: 1px solid var(--glass-border);
    padding: 60px 0 30px;
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--aurora-blue);
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-contact {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 15px;
}

.footer-contact span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* === CSS 科技图标 === */
.icon-shield {
    width: 48px;
    height: 48px;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-shield::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 44px;
    border: 2px solid var(--aurora-blue);
    border-radius: 50% 50% 50% 50% / 30% 30% 70% 70%;
    background: rgba(59, 130, 246, 0.1);
}

.icon-shield::after {
    content: '✓';
    position: relative;
    color: var(--aurora-blue);
    font-weight: 700;
    font-size: 1.2rem;
}

.icon-lock {
    width: 48px;
    height: 48px;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-lock::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 16px;
    border: 3px solid var(--aurora-purple);
    border-radius: 12px 12px 0 0;
    border-bottom: none;
    top: 8px;
}

.icon-lock::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 22px;
    background: rgba(108, 60, 224, 0.2);
    border: 2px solid var(--aurora-purple);
    border-radius: 4px;
    bottom: 6px;
}

.icon-chip {
    width: 48px;
    height: 48px;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-chip::before {
    content: '';
    position: absolute;
    width: 28px;
    height: 28px;
    background: rgba(6, 182, 212, 0.2);
    border: 2px solid var(--aurora-cyan);
    border-radius: 6px;
}

.icon-chip::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px dashed rgba(6, 182, 212, 0.3);
    border-radius: 8px;
}

/* === 懒加载 === */
.lazy-img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-img.loaded {
    opacity: 1;
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .section { padding: 50px 0; }
    .section-title { font-size: 1.5rem; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .dashboard { padding: 20px; }
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-stats { gap: 20px; }
    .stat-number { font-size: 1.6rem; }
    .encryption-layers { flex-direction: column; }
    .enc-arrow { transform: rotate(90deg); }

    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--glass-border);
    }

    .nav-menu.open {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .step-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .step-item:first-child,
    .step-item:last-child {
        border-radius: 8px;
    }

    .step-item {
        border-radius: 8px;
    }

    .glass-card {
        padding: 20px;
    }

    .news-card .card-image {
        margin: -20px -20px 15px;
        width: calc(100% + 40px);
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.6rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .share-bar { flex-direction: column; align-items: center; }
    .header-inner { height: 60px; }
    .search-bar { margin-top: 60px; }
}

/* === 文章内容样式 === */
.article-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1rem;
    color: var(--text-secondary);
}

.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    color: var(--text-primary);
    margin: 30px 0 15px;
    line-height: 1.4;
}

.article-content h2 { font-size: 1.6rem; }
.article-content h3 { font-size: 1.3rem; }
.article-content h4 { font-size: 1.1rem; }

.article-content p {
    margin-bottom: 18px;
}

.article-content ul, .article-content ol {
    margin: 15px 0;
    padding-left: 25px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    border-left: 3px solid var(--aurora-purple);
    padding: 15px 20px;
    margin: 20px 0;
    background: rgba(108, 60, 224, 0.1);
    border-radius: 0 8px 8px 0;
}

.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 20px 0;
}

/* === 标签 === */
.tag-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 20px 0;
}

.tag-item {
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--aurora-blue);
}

/* === 论坛帖子 === */
.forum-post {
    display: flex;
    gap: 15px;
    padding: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.forum-post:last-child {
    border-bottom: none;
}

.forum-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.forum-body {
    flex: 1;
}

.forum-author {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.forum-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.forum-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    gap: 15px;
}

/* === 特性网格 === */
.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(108, 60, 224, 0.15);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === 滚动条 === */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--deep-space);
}

::-webkit-scrollbar-thumb {
    background: rgba(108, 60, 224, 0.5);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(108, 60, 224, 0.8);
}

/* === JSON-LD 隐藏 === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}