/* ========== CSS Reset 和基础样式 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333333;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

.main-content {
    flex: 1;
    padding-top: 70px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 480px) {
    .main-content {
        padding-top: 60px;
    }
}

/* ========== Hero 主视觉区域 ========== */
.hero {
    min-height: calc(100vh - 70px);
    background: linear-gradient(135deg, #0a0a0a 0%, #0a1628 50%, #0a0a0a 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -25%;
    width: 100%;
    height: 200%;
    background: radial-gradient(ellipse 50% 50% at center, rgba(0, 170, 255, 0.08) 0%, transparent 70%);
    animation: heroGlow 8s ease-in-out infinite;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -25%;
    width: 100%;
    height: 200%;
    background: radial-gradient(ellipse 40% 40% at center, rgba(0, 170, 255, 0.05) 0%, transparent 60%);
    animation: heroGlow 10s ease-in-out infinite reverse;
    pointer-events: none;
}

@keyframes heroGlow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 170, 255, 0.1);
    border: 1px solid rgba(0, 170, 255, 0.2);
    color: #00AAFF;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero-badge svg {
    width: 14px;
    height: 14px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #00AAFF 0%, #00d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 17px;
    color: #888888;
    line-height: 1.8;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.hero-btn-primary {
    background: linear-gradient(135deg, #00AAFF 0%, #0088cc 100%);
    color: #ffffff;
    box-shadow: 0 8px 30px rgba(0, 170, 255, 0.3);
}

.hero-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 170, 255, 0.4);
}

.hero-btn-primary svg {
    width: 20px;
    height: 20px;
}

.hero-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #cccccc;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.2);
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: #666666;
}

.hero-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-meta-item svg {
    width: 14px;
    height: 14px;
    color: #00AAFF;
}

/* Hero 图片区域 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.08),
        0 25px 80px -12px rgba(0, 0, 0, 0.8),
        0 0 60px rgba(0, 170, 255, 0.15);
}

.hero-image {
    width: 100%;
    max-width: 520px;
    height: auto;
    display: block;
}

/* 浮动装饰元素 */
.hero-float {
    position: absolute;
    background: rgba(0, 170, 255, 0.1);
    border: 1px solid rgba(0, 170, 255, 0.2);
    border-radius: 12px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    animation: float 4s ease-in-out infinite;
}

.hero-float-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #00AAFF 0%, #0088cc 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-float-icon svg {
    width: 20px;
    height: 20px;
    color: #ffffff;
}

.hero-float-text {
    font-size: 13px;
    font-weight: 600;
    color: #ffffff;
}

.hero-float-1 {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.hero-float-2 {
    bottom: 20%;
    left: -30px;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Hero 统计数据 */
.hero-stats {
    position: absolute;
    bottom: -88px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    z-index: 2;
    background: rgba(255, 255, 255, 0.03);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 50px;
    padding: 0;
}

.hero-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    position: relative;
}

.hero-stat:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
}

.hero-stat-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, rgba(0, 170, 255, 0.2) 0%, rgba(0, 170, 255, 0.1) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-stat-icon svg {
    width: 16px;
    height: 16px;
    color: #00AAFF;
}

.hero-stat-content {
    display: flex;
    flex-direction: column;
}

.hero-stat-value {
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 11px;
    color: #888888;
    white-space: nowrap;
}

/* Hero 响应式 */
@media (max-width: 1024px) {
    .hero {
        min-height: 0;
        padding: 40px 0 0;
    }

    .hero-container {
        display: flex;
        flex-direction: column;
        gap: 40px;
        text-align: center;
        padding: 0 20px;
    }

    .hero-content {
        order: 1;
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-visual {
        order: 2;
        max-width: 360px;
        margin: 0 auto;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .hero-btn {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        font-size: 16px;
    }

    .hero-btn-secondary {
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .hero-meta {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .hero-float {
        display: none;
    }

    .hero-stats {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        display: flex;
        flex-direction: row;
        justify-content: center;
        gap: 0;
        margin: 40px -20px 0;
        padding: 20px 0;
        border-radius: 0;
        width: calc(100% + 40px);
        background: rgba(0, 0, 0, 0.3);
        border: none;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        order: 3;
    }

    .hero-stat {
        padding: 0 16px;
        justify-content: center;
        flex: 1;
    }

    .hero-stat:not(:last-child) {
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }

    .hero-stat:not(:last-child)::after {
        display: none;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 30px 0 0;
    }

    .hero-container {
        gap: 30px;
        padding: 0 20px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-desc {
        font-size: 14px;
        line-height: 1.7;
    }

    .hero-badge {
        font-size: 12px;
        padding: 8px 16px;
    }

    .hero-btn {
        padding: 14px 20px;
        font-size: 15px;
    }

    .hero-meta-item {
        font-size: 12px;
    }

    .hero-visual {
        max-width: 280px;
    }

    .hero-stats {
        padding: 16px 0;
    }

    .hero-stat {
        padding: 0 10px;
    }

    .hero-stat-icon {
        width: 0;
        height: 0;
        display: none;
    }

    .hero-stat-value {
        font-size: 14px;
    }

    .hero-stat-label {
        font-size: 10px;
    }
}

@media (max-width: 400px) {
    .hero-title {
        font-size: 24px;
    }

    .hero-container {
        gap: 24px;
        padding: 0 16px;
    }

    .hero-desc {
        font-size: 13px;
    }

    .hero-stat {
        padding: 0 6px;
    }

    .hero-stat-value {
        font-size: 13px;
    }
}

/* ========== 通用区块标题样式 ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 170, 255, 0.1);
    border: 1px solid rgba(0, 170, 255, 0.2);
    color: #00AAFF;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 17px;
    color: #666666;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .section-header { margin-bottom: 40px; }
    .section-title { font-size: 28px; }
    .section-desc { font-size: 15px; }
}

/* ========== AI 清理区域 ========== */
.ai-clean {
    padding: 120px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafb 100%);
    position: relative;
}

.ai-clean-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.ai-clean-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.ai-clean-content {
    max-width: 500px;
}

.ai-clean-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 170, 255, 0.1);
    color: #00AAFF;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.ai-clean-title {
    font-size: 36px;
    font-weight: 800;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 20px;
}

.ai-clean-desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
}

.ai-clean-image {
    position: relative;
}

.ai-clean-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

@media (max-width: 900px) {
    .ai-clean { padding: 80px 0; }
    .ai-clean-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .ai-clean-content { max-width: 100%; text-align: center; }
    .ai-clean-title { font-size: 28px; }
}

/* ========== 性能提升区域 ========== */
.boost {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafb 0%, #ffffff 100%);
}

.boost-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.boost-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.boost-image {
    order: -1;
}

.boost-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.boost-content {
    max-width: 500px;
}

.boost-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 170, 255, 0.1);
    color: #00AAFF;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.boost-title {
    font-size: 36px;
    font-weight: 800;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 20px;
}

.boost-desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
}

@media (max-width: 900px) {
    .boost { padding: 80px 0; }
    .boost-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .boost-image { order: 0; }
    .boost-content { max-width: 100%; text-align: center; }
    .boost-title { font-size: 28px; }
}

/* ========== 隐私保护区域 ========== */
.protect {
    padding: 120px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafb 100%);
}

.protect-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.protect-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.protect-content {
    max-width: 500px;
}

.protect-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 170, 255, 0.1);
    color: #00AAFF;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.protect-title {
    font-size: 36px;
    font-weight: 800;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 20px;
}

.protect-desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
}

.protect-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

@media (max-width: 900px) {
    .protect { padding: 80px 0; }
    .protect-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .protect-content { max-width: 100%; text-align: center; }
    .protect-title { font-size: 28px; }
}

/* ========== 功能特性区域 ========== */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafb 0%, #ffffff 100%);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
}

.features-tab {
    padding: 12px 28px;
    background: transparent;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: #666666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.features-tab:hover {
    border-color: #00AAFF;
    color: #00AAFF;
}

.features-tab.active {
    background: linear-gradient(135deg, #00AAFF 0%, #0088cc 100%);
    border-color: transparent;
    color: #ffffff;
}

.features-grid {
    display: none;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.features-grid.active {
    display: grid;
}

.feature-card {
    background: #ffffff;
    border: 1px solid #e8e8e8;
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: rgba(0, 170, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    transform: translateY(-4px);
}

.feature-card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(0, 170, 255, 0.1) 0%, rgba(0, 170, 255, 0.05) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.feature-card-icon svg {
    width: 24px;
    height: 24px;
    color: #00AAFF;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: #666666;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .features { padding: 80px 0; }
    .features-tabs {
        flex-wrap: wrap;
    }
    .features-tab {
        padding: 10px 20px;
        font-size: 14px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 问题解决区域 ========== */
.fixes {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d0d0d 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden;
}

.fixes::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 170, 255, 0.3), transparent);
}

.fixes-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.fixes .section-title {
    color: #ffffff;
}

.fixes .section-desc {
    color: #888888;
}

.fixes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.fix-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.fix-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #00AAFF, #00d4ff);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fix-card:hover {
    border-color: rgba(0, 170, 255, 0.2);
    background: rgba(0, 170, 255, 0.03);
}

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

.fix-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.fix-card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(0, 170, 255, 0.15) 0%, rgba(0, 170, 255, 0.05) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.fix-card-icon svg {
    width: 28px;
    height: 28px;
    color: #00AAFF;
}

.fix-card-title {
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
}

.fix-card-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.fix-problem, .fix-solution {
    padding: 16px;
    border-radius: 10px;
}

.fix-problem {
    background: rgba(255, 100, 100, 0.05);
    border-left: 3px solid rgba(255, 100, 100, 0.5);
}

.fix-solution {
    background: rgba(0, 170, 255, 0.05);
    border-left: 3px solid #00AAFF;
}

.fix-problem p, .fix-solution p {
    font-size: 14px;
    color: #aaaaaa;
    line-height: 1.7;
}

@media (max-width: 900px) {
    .fixes { padding: 80px 0; }
    .fixes-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .fix-card { padding: 24px; }
    .fix-card-title { font-size: 18px; }
}

/* ========== 数据展示区域 ========== */
.numbers {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafb 100%);
}

.numbers-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.number-card {
    background: #ffffff;
    border: 1px solid #e8e8e8;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
}

.number-card-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 24px;
}

.number-card-image {
    margin-bottom: 24px;
}

.number-card-image img {
    max-width: 100%;
    border-radius: 12px;
}

@media (max-width: 768px) {
    .numbers { padding: 70px 0; }
    .numbers-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 用户评价区域 ========== */
.testimonial {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8fafb 0%, #ffffff 100%);
}

.testimonial-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.testimonial-card {
    background: #ffffff;
    border: 1px solid #e8e8e8;
    border-radius: 24px;
    padding: 50px 60px;
    position: relative;
    box-shadow: 0 10px 60px rgba(0, 0, 0, 0.04);
}

.testimonial-quote-icon {
    position: absolute;
    top: -24px;
    left: 60px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #00AAFF 0%, #0088cc 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.testimonial-quote-icon svg {
    width: 24px;
    height: 24px;
    color: #ffffff;
}

.testimonial-quote {
    font-size: 18px;
    color: #444444;
    line-height: 1.9;
    margin-bottom: 32px;
    font-style: italic;
}

.testimonial-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.testimonial-source {
    display: flex;
    align-items: center;
    gap: 16px;
}

.source-logo {
    width: 56px;
    height: 56px;
    background: #f5f5f5;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #00AAFF;
}

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

.source-name {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
}

.source-type {
    font-size: 13px;
    color: #888888;
}

.testimonial-rating {
    display: flex;
    gap: 4px;
}

.testimonial-rating svg {
    width: 20px;
    height: 20px;
    fill: #ffc107;
}

@media (max-width: 768px) {
    .testimonial { padding: 70px 0; }
    .testimonial-card { padding: 40px 30px; }
    .testimonial-quote-icon { left: 30px; width: 40px; height: 40px; top: -20px; }
    .testimonial-quote-icon svg { width: 20px; height: 20px; }
    .testimonial-quote { font-size: 16px; }
    .testimonial-footer { flex-direction: column; gap: 24px; align-items: flex-start; }
}

@media (max-width: 480px) {
    .testimonial { padding: 50px 0; }
    .testimonial-card { padding: 35px 20px; border-radius: 16px; }
    .testimonial-quote { font-size: 15px; line-height: 1.8; }
    .source-logo { width: 48px; height: 48px; }
    .source-name { font-size: 16px; }
}

/* ========== CTA 区域 ========== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #00AAFF 0%, #0088cc 100%);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 0, 0, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

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

.cta-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.cta-content { flex: 1; }

.cta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.cta-badge svg {
    width: 14px;
    height: 14px;
}

.cta-title {
    font-size: 40px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.cta-title span {
    color: #ffffff;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.4);
    text-underline-offset: 4px;
}

.cta-desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    max-width: 480px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px 48px;
    font-size: 17px;
    font-weight: 600;
    background: #ffffff;
    color: #00AAFF;
    border-radius: 14px;
    transition: all 0.4s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
}

.cta-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.2);
}

.cta-btn svg {
    width: 22px;
    height: 22px;
}

.cta-note {
    display: flex;
    align-items: center;
    gap: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
}

.cta-note-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cta-note-item svg {
    width: 16px;
    height: 16px;
}

@media (max-width: 900px) {
    .cta { padding: 80px 0; }
    .cta-wrapper {
        flex-direction: column;
        text-align: center;
    }
    .cta-title { font-size: 32px; }
    .cta-desc { margin: 0 auto; }
}

@media (max-width: 600px) {
    .cta { padding: 60px 0; }
    .cta-title { font-size: 26px; }
    .cta-btn { width: 100%; max-width: 280px; padding: 16px 32px; font-size: 15px; }
    .cta-note { flex-direction: column; gap: 10px; }
}

/* ========== FAQ 区域 ========== */
.faq {
    padding: 100px 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 170, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(0, 170, 255, 0.05) 0%, transparent 40%),
        linear-gradient(180deg, #0a0a0a 0%, #0d0d0d 50%, #0a0a0a 100%);
    position: relative;
    overflow: hidden;
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 170, 255, 0.3), transparent);
}

.faq .section-title {
    color: #ffffff;
}

.faq .section-desc {
    color: #888888;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(0, 170, 255, 0.2);
}

.faq-item.active {
    border-color: rgba(0, 170, 255, 0.3);
    background: rgba(0, 170, 255, 0.03);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
}

.faq-question span {
    font-size: 16px;
    font-weight: 500;
    color: #ffffff;
    line-height: 1.5;
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: #888888;
    flex-shrink: 0;
    transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
    color: #00AAFF;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 15px;
    color: #888888;
    line-height: 1.8;
    margin: 0;
}

/* FAQ 响应式 */
@media (max-width: 768px) {
    .faq { padding: 70px 0; }
    
    .faq-question {
        padding: 16px 20px;
    }
    
    .faq-question span {
        font-size: 15px;
    }
    
    .faq-answer p {
        padding: 0 20px 16px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .faq { padding: 50px 0; }
    
    .faq-question {
        padding: 14px 16px;
        gap: 12px;
    }
    
    .faq-question span {
        font-size: 14px;
    }
    
    .faq-question svg {
        width: 18px;
        height: 18px;
    }
    
    .faq-answer p {
        padding: 0 16px 14px;
        font-size: 13px;
        line-height: 1.7;
    }
}