/* ========== 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%, #0f1419 50%, #0a0a0a 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(235, 39, 41, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(235, 39, 41, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* 电路板网格背景 */
.hero-circuit-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(235, 39, 41, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(235, 39, 41, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 0%, transparent 100%);
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 0%, transparent 100%);
    pointer-events: none;
    z-index: 0;
    animation: circuit-pulse 4s ease-in-out infinite;
}

@keyframes circuit-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 扫描线动画 - Driver Booster 专属 */
.hero-scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(235, 39, 41, 0.3) 20%, 
        rgba(235, 39, 41, 0.8) 50%, 
        rgba(235, 39, 41, 0.3) 80%, 
        transparent 100%);
    box-shadow: 
        0 0 20px rgba(235, 39, 41, 0.5),
        0 0 40px rgba(235, 39, 41, 0.3),
        0 0 60px rgba(235, 39, 41, 0.2);
    animation: scan-sweep 4s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes scan-sweep {
    0% { top: 0; opacity: 0; }
    5% { opacity: 1; }
    95% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

/* 数据流粒子 */
.hero-data-streams {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.data-stream {
    position: absolute;
    width: 2px;
    height: 60px;
    background: linear-gradient(180deg, rgba(235, 39, 41, 0.8), transparent);
    border-radius: 2px;
    animation: data-flow 3s linear infinite;
}

.data-stream:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 2.5s; }
.data-stream:nth-child(2) { left: 25%; animation-delay: 0.5s; animation-duration: 3s; }
.data-stream:nth-child(3) { left: 50%; animation-delay: 1s; animation-duration: 2.8s; }
.data-stream:nth-child(4) { left: 75%; animation-delay: 1.5s; animation-duration: 3.2s; }
.data-stream:nth-child(5) { left: 90%; animation-delay: 2s; animation-duration: 2.6s; }

@keyframes data-flow {
    0% { top: -80px; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

/* 浮动芯片图标 */
.hero-floating-chips {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.floating-chip {
    position: absolute;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(235, 39, 41, 0.05);
    border: 1px solid rgba(235, 39, 41, 0.15);
    border-radius: 12px;
    color: rgba(235, 39, 41, 0.4);
    animation: chip-float 6s ease-in-out infinite;
}

.floating-chip svg {
    width: 24px;
    height: 24px;
}

.floating-chip:nth-child(1) { 
    top: 15%; left: 5%; 
    animation-delay: 0s;
}
.floating-chip:nth-child(2) { 
    top: 60%; left: 8%; 
    animation-delay: 1.5s;
    width: 40px; height: 40px;
}
.floating-chip:nth-child(2) svg { width: 20px; height: 20px; }
.floating-chip:nth-child(3) { 
    top: 25%; right: 8%; 
    animation-delay: 3s;
    width: 36px; height: 36px;
}
.floating-chip:nth-child(3) svg { width: 18px; height: 18px; }
.floating-chip:nth-child(4) { 
    top: 70%; right: 5%; 
    animation-delay: 4.5s;
}

@keyframes chip-float {
    0%, 100% { 
        transform: translateY(0) rotate(0deg); 
        opacity: 0.4;
    }
    25% { 
        transform: translateY(-15px) rotate(5deg); 
        opacity: 0.7;
    }
    50% { 
        transform: translateY(-8px) rotate(-3deg); 
        opacity: 0.5;
    }
    75% { 
        transform: translateY(-20px) rotate(3deg); 
        opacity: 0.6;
    }
}

/* 脉冲环 - 扫描效果 */
.hero-pulse-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 1px solid rgba(235, 39, 41, 0.2);
    border-radius: 50%;
    animation: pulse-expand 4s ease-out infinite;
}

.pulse-ring:nth-child(1) { animation-delay: 0s; }
.pulse-ring:nth-child(2) { animation-delay: 1.3s; }
.pulse-ring:nth-child(3) { animation-delay: 2.6s; }

@keyframes pulse-expand {
    0% { 
        width: 100px; 
        height: 100px; 
        opacity: 0.6;
        border-color: rgba(235, 39, 41, 0.4);
    }
    100% { 
        width: 800px; 
        height: 800px; 
        opacity: 0;
        border-color: rgba(235, 39, 41, 0);
    }
}

/* 移动端隐藏部分动画 */
@media (max-width: 768px) {
    .hero-floating-chips { display: none; }
    .hero-pulse-rings { display: none; }
    .data-stream { height: 40px; }
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 80px 40px;
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-content {
    animation: fadeInLeft 0.8s ease-out;
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(235, 39, 41, 0.1);
    border: 1px solid rgba(235, 39, 41, 0.25);
    color: #EB2729;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: 0.5px;
}

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

.hero-title {
    font-size: 52px;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #EB2729 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-version {
    font-size: 16px;
    font-weight: 500;
    color: #555555;
    margin-bottom: 24px;
    letter-spacing: 0.05em;
}

.hero-version span {
    color: #EB2729;
    font-weight: 600;
}

.hero-subtitle {
    font-size: 18px;
    color: #999999;
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.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, #EB2729 0%, #c41e20 100%);
    color: #ffffff;
    box-shadow: 0 8px 30px -8px rgba(235, 39, 41, 0.5);
}

.hero-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px -8px rgba(235, 39, 41, 0.6);
}

.hero-btn-primary svg {
    width: 18px;
    height: 18px;
}

.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-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #888888;
    font-size: 14px;
}

.hero-feature svg {
    width: 18px;
    height: 18px;
    color: #EB2729;
    flex-shrink: 0;
}

.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease-out 0.2s both;
}

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

.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 -20px rgba(235, 39, 41, 0.3);
}

.hero-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(235, 39, 41, 0.4) 0%, transparent 40%, transparent 60%, rgba(235, 39, 41, 0.2) 100%);
    -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;
    pointer-events: none;
}

.hero-image-wrapper img {
    width: 100%;
    display: block;
    border-radius: 20px;
}

.hero-float-card {
    position: absolute;
    background: rgba(20, 20, 20, 0.95);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.hero-float-card.top-right {
    top: -20px;
    right: -30px;
    animation: floatY 5s ease-in-out infinite;
}

.hero-float-card.bottom-left {
    bottom: 30px;
    left: -40px;
    animation: floatY 5s ease-in-out infinite 2.5s;
}

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.float-card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #EB2729 0%, #c41e20 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.float-card-text {
    text-align: left;
}

.float-card-title {
    font-size: 13px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 2px;
}

.float-card-desc {
    font-size: 11px;
    color: #777777;
}

.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;
    min-width: max-content;
}

.hero-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    position: relative;
    white-space: nowrap;
}

.hero-stat:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 16px;
    background: rgba(255, 255, 255, 0.1);
}

.hero-stat-value {
    font-size: 15px;
    font-weight: 600;
    color: #EB2729;
    letter-spacing: -0.01em;
}

.hero-stat-value span {
    color: #EB2729;
}

.hero-stat-label {
    font-size: 13px;
    color: #666666;
}

/* Hero 响应式 */
@media (max-width: 1100px) {
    .hero-container {
        display: flex;
        flex-direction: column;
        gap: 40px;
        text-align: center;
        padding: 60px 30px 80px;
    }

    .hero-content { order: 1; }
    .hero-visual { order: 2; max-width: 500px; margin: 0 auto; }
    .hero-subtitle { max-width: 100%; margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-features { 
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center; 
        gap: 12px;
    }
    .hero-feature {
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 20px;
        padding: 8px 16px;
    }
    .hero-float-card { display: none; }

    .hero-stats {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin: 0 auto;
        order: 3;
        width: 100%;
        max-width: 600px;
    }
}

@media (max-width: 600px) {
    .hero { min-height: 0; }
    .hero-container { padding: 30px 20px 20px; gap: 24px; }
    .hero-title { font-size: 28px; }
    .hero-version { font-size: 12px; margin-bottom: 12px; }
    .hero-subtitle { font-size: 14px; line-height: 1.7; margin-bottom: 20px; }
    .hero-buttons { flex-direction: column; gap: 12px; margin-bottom: 24px; }
    .hero-btn { width: 100%; padding: 16px 24px; font-size: 16px; }
    .hero-features { 
        flex-wrap: wrap; 
        gap: 8px; 
        justify-content: center;
    }
    .hero-feature { 
        font-size: 12px; 
        padding: 6px 12px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 16px;
    }
    .hero-badge { font-size: 11px; padding: 6px 12px; margin-bottom: 16px; }

    .hero-stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1px;
        padding: 0;
        border-radius: 12px;
        width: calc(100% + 40px);
        margin-left: -20px;
        margin-right: -20px;
        max-width: none;
        background: rgba(255, 255, 255, 0.06);
        border: none;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        margin-top: 10px;
    }

    .hero-stat { 
        padding: 16px 12px; 
        flex: none;
        flex-direction: column;
        gap: 4px;
        text-align: center;
        background: #0d0d0d;
    }
    .hero-stat:not(:last-child) { border-right: none; }
    .hero-stat:not(:last-child)::after { display: none; }
    .hero-stat-value { font-size: 18px; font-weight: 700; }
    .hero-stat-label { font-size: 11px; }
    .hero-visual { max-width: 300px; }
}

@media (max-width: 400px) {
    .hero-title { font-size: 24px; }
    .hero-container { padding: 24px 16px 16px; gap: 20px; }
    .hero-subtitle { font-size: 13px; }
    .hero-btn { padding: 14px 20px; font-size: 15px; }
    .hero-feature { font-size: 11px; padding: 5px 10px; }
    .hero-stats {
        width: calc(100% + 32px);
        margin-left: -16px;
        margin-right: -16px;
    }
    .hero-stat { padding: 14px 10px; }
    .hero-stat-value { font-size: 16px; }
    .hero-stat-label { font-size: 10px; }
    .hero-visual { max-width: 260px; }
}

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

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    background: rgba(235, 39, 41, 0.08);
    color: #EB2729;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: #ffffff;
    border-radius: 24px;
    padding: 50px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.03);
    transition: all 0.4s ease;
}

.feature-card:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.feature-card.reverse { direction: rtl; }
.feature-card.reverse > * { direction: ltr; }

.feature-content {
    display: flex;
    flex-direction: column;
}

.feature-number {
    font-size: 14px;
    font-weight: 700;
    color: #EB2729;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-number::after {
    content: '';
    flex: 1;
    max-width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #EB2729 0%, transparent 100%);
}

.feature-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
    line-height: 1.3;
}

.feature-desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.85;
    margin-bottom: 28px;
}

.feature-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: #f5f7f9;
    border-radius: 8px;
    font-size: 13px;
    color: #555555;
    font-weight: 500;
}

.feature-tag svg {
    width: 14px;
    height: 14px;
    color: #EB2729;
}

.feature-visual { position: relative; }

.feature-image-container {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f4f8 0%, #e8eef3 100%);
}

.feature-image-container::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(235, 39, 41, 0.2) 0%, transparent 50%);
    -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;
    pointer-events: none;
}

.feature-image-container img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.feature-card:hover .feature-image-container img {
    transform: scale(1.02);
}

@media (max-width: 1000px) {
    .features { padding: 80px 0; }
    .feature-card, .feature-card.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px 30px;
        direction: ltr;
    }
    .feature-visual { order: -1; }
    .section-title { font-size: 32px; }
    .feature-title { font-size: 24px; }
}

@media (max-width: 600px) {
    .features { padding: 60px 0; }
    .section-header { margin-bottom: 50px; }
    .section-title { font-size: 26px; }
    .section-desc { font-size: 15px; }
    .feature-card { padding: 30px 20px; border-radius: 16px; }
    .feature-title { font-size: 20px; }
    .feature-desc { font-size: 14px; }
    .feature-highlights { gap: 8px; }
    .feature-tag { padding: 6px 10px; font-size: 12px; }
}

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

.fixes::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1000px;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(235, 39, 41, 0.3) 50%, transparent 100%);
}

.fixes .section-header { margin-bottom: 70px; }

.fixes .section-tag {
    background: rgba(235, 39, 41, 0.1);
    border: 1px solid rgba(235, 39, 41, 0.2);
}

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

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

.fix-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.fix-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(235, 39, 41, 0.3) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.fix-card:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(235, 39, 41, 0.15);
    transform: translateY(-4px);
}

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

.fix-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(235, 39, 41, 0.15) 0%, rgba(235, 39, 41, 0.05) 100%);
    border: 1px solid rgba(235, 39, 41, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all 0.4s ease;
}

.fix-card:hover .fix-icon {
    background: linear-gradient(135deg, #EB2729 0%, #c41e20 100%);
    border-color: transparent;
}

.fix-icon svg {
    width: 26px;
    height: 26px;
    color: #EB2729;
    transition: color 0.4s ease;
}

.fix-card:hover .fix-icon svg { color: #ffffff; }

.fix-title {
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
    line-height: 1.4;
}

.fix-desc {
    font-size: 14px;
    color: #777777;
    line-height: 1.7;
}

@media (max-width: 900px) {
    .fixes { padding: 80px 0; }
    .fixes-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .fix-card { padding: 24px; }
}

@media (max-width: 600px) {
    .fixes { padding: 60px 0; }
    .fixes-grid { grid-template-columns: 1fr; }
    .fix-card { text-align: center; }
    .fix-icon { margin: 0 auto 20px; }
}

/* ========== 为什么需要驱动更新区域 ========== */
.why-update {
    padding: 120px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafb 100%);
    position: relative;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px 32px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.03);
    transition: all 0.4s ease;
    text-align: center;
}

.why-card:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.why-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(235, 39, 41, 0.1) 0%, rgba(235, 39, 41, 0.05) 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: all 0.4s ease;
}

.why-card:hover .why-icon {
    background: linear-gradient(135deg, #EB2729 0%, #c41e20 100%);
}

.why-icon svg {
    width: 32px;
    height: 32px;
    color: #EB2729;
    transition: color 0.4s ease;
}

.why-card:hover .why-icon svg { color: #ffffff; }

.why-title {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 14px;
}

.why-desc {
    font-size: 15px;
    color: #666666;
    line-height: 1.7;
}

@media (max-width: 900px) {
    .why-update { padding: 80px 0; }
    .why-grid { grid-template-columns: 1fr; gap: 20px; }
    .why-card { padding: 32px 24px; }
}

@media (max-width: 600px) {
    .why-update { padding: 60px 0; }
    .why-title { font-size: 18px; }
    .why-desc { font-size: 14px; }
}

/* ========== 对比区域 ========== */
.comparison {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafb 0%, #ffffff 100%);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-top: 60px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.06);
}

.comparison-table th,
.comparison-table td {
    padding: 20px 24px;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
}

.comparison-table th {
    background: #1a1a1a;
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
}

.comparison-table th:first-child { text-align: left; }
.comparison-table th.highlight { background: #EB2729; }

.comparison-table td {
    font-size: 14px;
    color: #555555;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: #1a1a1a;
}

.comparison-table tbody tr:hover { background: #fafafa; }
.comparison-table .check { color: #EB2729; font-size: 20px; }
.comparison-table .dash { color: #cccccc; }

@media (max-width: 768px) {
    .comparison { padding: 80px 0; }
    .comparison-table th, .comparison-table td { padding: 14px 12px; font-size: 13px; }
}

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

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

.testimonial-header {
    text-align: center;
    margin-bottom: 60px;
}

.testimonial-header .section-tag { background: rgba(235, 39, 41, 0.08); }

.testimonial-card {
    max-width: 900px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 24px;
    padding: 50px;
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02), 0 20px 60px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.testimonial-quote-icon {
    position: absolute;
    top: -24px;
    left: 50px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #EB2729 0%, #c41e20 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(235, 39, 41, 0.3);
}

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

.testimonial-content { margin-bottom: 32px; }

.testimonial-quote {
    font-size: 18px;
    color: #444444;
    line-height: 1.9;
    margin: 0;
    font-weight: 400;
}

.testimonial-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 28px;
    border-top: 1px solid #f0f0f0;
}

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

.source-logo {
    width: 56px;
    height: 56px;
    background: #f5f7f9;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.source-logo svg {
    width: 28px;
    height: 28px;
    color: #EB2729;
}

.source-info { text-align: left; }

.source-name {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 4px;
}

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

.testimonial-rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.rating-label {
    font-size: 14px;
    color: #888888;
}

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

.rating-stars 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, #EB2729 0%, #c41e20 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: #EB2729;
    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;
    color: #ffffff;
}

@media (max-width: 900px) {
    .cta { padding: 70px 0; }
    .cta-wrapper { flex-direction: column; text-align: center; gap: 40px; }
    .cta-content { display: flex; flex-direction: column; align-items: center; }
    .cta-desc { max-width: 100%; }
    .cta-title { font-size: 32px; }
}

@media (max-width: 480px) {
    .cta { padding: 50px 0; }
    .cta-title { font-size: 26px; }
    .cta-desc { font-size: 15px; }
    .cta-btn { width: 100%; padding: 18px 32px; font-size: 16px; }
    .cta-note { flex-direction: column; gap: 10px; }
}

/* ========== FAQ 区域 ========== */
.faq {
    padding: 100px 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(235, 39, 41, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(235, 39, 41, 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(235, 39, 41, 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(235, 39, 41, 0.2);
}

.faq-item.active {
    border-color: rgba(235, 39, 41, 0.3);
    background: rgba(235, 39, 41, 0.03);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    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: #EB2729;
}

.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;
    }
}