/* ===== PCDN Review Website Styles ===== */

/* CSS Variables - 参考pot.html风格 */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --secondary: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --background: #f8fafc;
    --white: #ffffff;
    --border: #e2e8f0;
    --success: #22c55e;
    --warning: #eab308;
    --error: #ef4444;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--secondary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

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

/* Utility Classes */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 3rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-8 { margin-top: 3rem; }

.section {
    padding: 3rem 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

/* Card Styles - 简化版本 */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

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

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

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-icon {
    font-size: 0.875rem;
}

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    min-height: 70px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    color: var(--secondary);
}

.logo-highlight {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text);
    font-weight: 500;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--primary);
}

.cta-btn {
    margin-left: 1rem;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 3px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text);
}

/* Hero Section */
.hero {
    background: var(--gradient);
    color: var(--white);
    padding: 4rem 0 5rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-badge i {
    color: #ffd700;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--white);
    line-height: 1.2;
}

.hero-highlight {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-buttons .btn {
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    border-radius: 0.75rem;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.feature-item i {
    color: #ffd700;
    font-size: 1rem;
}

/* Hero背景装饰 */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    right: -150px;
    animation: float 6s ease-in-out infinite;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    left: -100px;
    animation: float 8s ease-in-out infinite reverse;
}

.circle-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: 10%;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* 移除旧的hero-image相关样式 */

/* Rankings Section */
.rankings {
    background: var(--white);
}

.ranking-list {
    margin-bottom: 3rem;
}

/* TOP3 特殊展示 */
.top3-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.top3-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    position: relative;
    text-align: center;
    border-top: 4px solid;
}

.top3-card.gold {
    border-top-color: #ffd700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), rgba(255, 215, 0, 0.02));
}

.top3-card.silver {
    border-top-color: #c0c0c0;
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.05), rgba(192, 192, 192, 0.02));
}

.top3-card.bronze {
    border-top-color: #cd7f32;
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.05), rgba(205, 127, 50, 0.02));
}

.rank-crown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.rank-crown i {
    font-size: 1.5rem;
}

.top3-card.gold .rank-crown i {
    color: #ffd700;
}

.top3-card.silver .rank-crown i {
    color: #c0c0c0;
}

.top3-card.bronze .rank-crown i {
    color: #cd7f32;
}

.rank-number {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--secondary);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    text-align: left;
}

.platform-icon {
    width: 50px;
    height: 50px;
    border-radius: 0.75rem;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
    flex-shrink: 0;
}

.platform-basic h3 {
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
}

.rating-compact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.rating-compact .stars {
    color: var(--warning);
    font-size: 0.875rem;
}

.rating-compact .score {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.875rem;
}

.tags-compact {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.earnings-highlight {
    text-align: center;
    padding: 1rem;
    background: var(--background);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.earnings-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    font-weight: 600;
}

.earnings-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.quick-stat {
    text-align: center;
    padding: 0.75rem 0.5rem;
    background: rgba(79, 70, 229, 0.05);
    border-radius: 0.5rem;
}

.quick-stat .label {
    display: block;
    font-size: 0.625rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    font-weight: 600;
}

.quick-stat .value {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--secondary);
}

.highlights {
    margin-bottom: 1.5rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
    justify-content: flex-start;
    text-align: left;
}

.highlight-item i {
    color: var(--success);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
}

.action-buttons .btn {
    flex: 1;
    font-size: 0.875rem;
    padding: 0.625rem 1rem;
}

/* 保留原有的 ranking-item 样式以支持其他排名 */
.ranking-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 2rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    position: relative;
}

.ranking-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
    border-radius: 0.75rem 0 0 0.75rem;
}

.rank-1::before { background: #ffd700; }
.rank-2::before { background: #c0c0c0; }
.rank-3::before { background: #cd7f32; }

.rank-badge {
    min-width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--white);
}

.rank-badge.gold { background: #ffd700; color: var(--secondary); }
.rank-badge.silver { background: #c0c0c0; color: var(--secondary); }
.rank-badge.bronze { background: #cd7f32; }

.platform-info {
    flex: 1;
    display: grid;
    gap: 1rem;
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.platform-logo {
    width: 60px;
    height: 60px;
    border-radius: 0.5rem;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.platform-details h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.stars {
    color: var(--warning);
}

.rating-score {
    font-weight: 600;
    color: var(--text-light);
}

.platform-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.tag.premium { background: #ffd700; color: var(--secondary); }
.tag.hot { background: var(--error); color: var(--white); }
.tag.stable { background: var(--success); color: var(--white); }
.tag.verified { background: var(--primary); color: var(--white); }

.platform-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.stat {
    text-align: center;
    padding: 1rem;
    background: var(--background);
    border-radius: 0.5rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.stat-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
}

.platform-features {
    margin-top: 1rem;
}

.platform-features h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.platform-features ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.25rem;
}

.platform-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.platform-features i {
    color: var(--success);
}

.platform-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Ranking Grid for 4-10 */
.ranking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.ranking-card {
    text-align: center;
    padding: 1.5rem;
    position: relative;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.rank-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.platform-mini-logo {
    width: 50px;
    height: 50px;
    border-radius: 0.5rem;
    margin: 0 auto 1rem;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
}

.ranking-card h4 {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.mini-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.mini-stars {
    color: var(--warning);
    font-size: 0.875rem;
}

.mini-stats {
    margin-bottom: 1rem;
}

.mini-stat {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.platform-highlights {
    margin-bottom: 1rem;
}

.highlight {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

/* Comparison Section */
.comparison {
    background: var(--background);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: 3rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    font-size: 0.875rem;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: var(--background);
    font-weight: 600;
    color: var(--secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.comparison-table .highlight-row {
    background: rgba(79, 70, 229, 0.05);
}

.platform-cell {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.platform-cell .fa {
    width: 30px;
    height: 30px;
    border-radius: 0.375rem;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.badge {
    padding: 2px 6px;
    border-radius: 0.375rem;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 0.5rem;
}

.badge.gold { background: #ffd700; color: var(--secondary); }
.badge.hot { background: var(--error); color: var(--white); }
.badge.stable { background: var(--success); color: var(--white); }

.rating-badge {
    padding: 2px 8px;
    border-radius: 0.375rem;
    font-weight: 600;
    font-size: 0.75rem;
}

.rating-badge.high {
    background: var(--success);
    color: var(--white);
}

.rating-badge.medium {
    background: var(--warning);
    color: var(--white);
}

.rate-high {
    color: var(--success);
    font-weight: 600;
}

.rate-medium {
    color: var(--warning);
    font-weight: 600;
}

/* Metrics Comparison */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.metric-card {
    padding: 1.5rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.metric-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.metric-icon {
    font-size: 1.25rem;
    color: var(--primary);
}

.metric-chart {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chart-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.platform-name {
    min-width: 120px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.chart-bar {
    flex: 1;
    height: 8px;
    background: var(--border);
    border-radius: 0.375rem;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 0.375rem;
}

.bar-fill.security { background: var(--success); }
.bar-fill.satisfaction { background: var(--warning); }
.bar-fill.payment { background: var(--primary-light); }

.metric-value {
    min-width: 60px;
    text-align: right;
    font-weight: 600;
    color: var(--secondary);
    font-size: 0.875rem;
}

/* Analysis Grid */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.analysis-card {
    padding: 1.5rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.analysis-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.analysis-header .fa {
    width: 40px;
    height: 40px;
    border-radius: 0.5rem;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.rank-label {
    margin-left: auto;
    padding: 0.25rem 0.5rem;
    background: var(--primary);
    color: var(--white);
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.pros-cons {
    display: grid;
    gap: 1.5rem;
}

.pros h5,
.cons h5 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.pros i { color: var(--success); }
.cons i { color: var(--error); }

.pros ul,
.cons ul {
    list-style: none;
    padding: 0;
}

.pros li,
.cons li {
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--text-light);
    border-bottom: 1px solid var(--border);
}

.pros li:last-child,
.cons li:last-child {
    border-bottom: none;
}

/* Guide Section */
.guide {
    background: var(--white);
}

.steps-container {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--background);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.step-number {
    min-width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.step-tips {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--primary);
}

.strategies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.strategy-card {
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.strategy-icon {
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.strategy-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.strategy-card ul {
    list-style: none;
    text-align: left;
}

.strategy-card li {
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--text-light);
    border-bottom: 1px solid var(--border);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.security-item {
    padding: 1.5rem;
    background: var(--background);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.security-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.security-header i {
    font-size: 1.25rem;
    color: var(--warning);
}

/* FAQ Section - 新的非折叠样式 */
.faq {
    background: var(--background);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: 3rem;
}

.faq-category-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
    font-size: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}

.faq-category-title i {
    color: var(--primary);
    font-size: 1.125rem;
}

.faq-items {
    display: grid;
    gap: 1.25rem;
}

.faq-item {
    background: var(--white);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.faq-title {
    color: var(--secondary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.faq-title::before {
    content: "Q:";
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    flex-shrink: 0;
}

.faq-content {
    color: var(--text-light);
    line-height: 1.6;
}

.faq-content p {
    margin: 0;
}

/* Calculator Section - 修复布局 */
.calculator {
    background: var(--white);
}

.calculator-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2rem;
    background: var(--background);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.calculator-inputs {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-group label {
    font-weight: 600;
    color: var(--secondary);
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-group label span {
    color: var(--primary);
    font-weight: 700;
}

.input-group input[type="range"] {
    width: 100%;
    height: 10px;
    border-radius: 0.375rem;
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.input-group input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
}

.input-group select {
    padding: 0.875rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--white);
    color: var(--secondary);
    font-size: 1rem;
    cursor: pointer;
}

.input-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.calculator-result {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.result-item {
    text-align: center;
    padding: 1.25rem 1rem;
    background: var(--white);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.result-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
}

.result-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.result-breakdown {
    padding: 1.5rem;
    background: var(--white);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.result-breakdown h4 {
    margin-bottom: 1rem;
    color: var(--secondary);
    font-size: 1.125rem;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    align-items: center;
}

.breakdown-item:last-child {
    margin-bottom: 0;
}

.breakdown-item span:first-child {
    color: var(--text-light);
}

.breakdown-item span:last-child {
    font-weight: 600;
    color: var(--secondary);
}

.calculator-disclaimer {
    font-size: 0.75rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(234, 179, 8, 0.1);
    border-radius: 0.5rem;
    border-left: 3px solid var(--warning);
}

/* Footer */
.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 3rem 0;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.footer-logo-highlight {
    color: var(--primary-light);
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.footer-links-column h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-links-column ul {
    list-style: none;
}

.footer-links-column li {
    margin-bottom: 0.5rem;
}

.footer-links-column a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
}

.footer-disclaimer {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(234, 179, 8, 0.1);
    border-left: 4px solid var(--warning);
    border-radius: 0.5rem;
}

.footer-disclaimer p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    margin: 0;
}

.footer-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.social-link:hover {
    background: var(--primary);
}

.footer-badge {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.badge-item i {
    color: var(--success);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    z-index: 1000;
}

.back-to-top:hover {
    background: var(--primary-dark);
}

.back-to-top.show {
    display: flex;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .cta-btn {
        margin-left: 0;
    }
    
    .hero {
        padding: 3rem 0 4rem;
        min-height: 70vh;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
        margin-bottom: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .stat-item {
        padding: 1.25rem 0.75rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .hero-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        display: grid;
    }
    
    .feature-item {
        justify-content: center;
        font-size: 0.8rem;
        padding: 0.625rem 0.75rem;
    }
    
    /* TOP3 移动端适配 */
    .top3-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .top3-card {
        padding: 1.25rem;
    }
    
    .platform-header {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .earnings-value {
        font-size: 1.25rem;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .ranking-item {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .platform-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-features ul {
        grid-template-columns: 1fr;
    }
    
    .platform-actions {
        justify-content: center;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    /* 计算器移动端适配 */
    .calculator-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .result-display {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .result-item {
        padding: 1rem 0.75rem;
    }
    
    .result-value {
        font-size: 1.25rem;
    }
    
    /* FAQ移动端适配 */
    .faq-item {
        padding: 1.25rem;
    }
    
    .faq-title {
        font-size: 1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .faq-title::before {
        align-self: flex-start;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-meta {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-badge {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕适配 */
    .hero {
        padding: 2.5rem 0 3rem;
        min-height: 60vh;
    }
    
    .hero h1 {
        font-size: 1.875rem;
        line-height: 1.3;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .stat-item {
        padding: 1rem 0.5rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .circle-1, .circle-2, .circle-3 {
        display: none;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .top3-card {
        padding: 1rem;
    }
    
    .platform-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .earnings-value {
        font-size: 1.125rem;
    }
    
    .calculator-container {
        padding: 1rem;
    }
    
    .input-group label {
        font-size: 0.875rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .result-value {
        font-size: 1.125rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}