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

body {
    font-family: 'Roboto', 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    background-color: #fff;
    color: #202124;
    overflow-x: hidden;
}

/* 顶部导航 */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 64px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e8eaed;
    display: flex;
    align-items: center;
    padding: 0 48px;
    z-index: 1000;
    transition: box-shadow 0.3s;
}

.header.scrolled {
    box-shadow: 0 1px 6px rgba(32,33,36,0.28);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #5f6368;
    font-size: 22px;
    font-weight: 400;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.nav-menu {
    margin-left: 24px;
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    color: #5f6368;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

.nav-menu a:hover {
    color: #1967d2;
}

/* Hero 区域 */
.hero {
    margin-top: 64px;
    min-height: calc(100vh - 64px);
    padding: 80px 48px;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(66, 133, 244, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: 400;
    line-height: 1.2;
    color: #202124;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-text h1 .highlight {
    color: #1967d2;
    font-weight: 500;
}

.hero-text p {
    font-size: 18px;
    line-height: 1.7;
    color: #5f6368;
    margin-bottom: 32px;
    max-width: 500px;
}

.button-group {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #1a73e8, #1967d2);
    color: #fff;
    padding: 18px 40px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(26, 115, 232, 0.3),
                0 2px 8px rgba(26, 115, 232, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.8s;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 32px rgba(26, 115, 232, 0.4),
                0 4px 16px rgba(26, 115, 232, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, #1967d2, #1557b8);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.btn-primary svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.btn-primary:hover svg {
    transform: translateY(2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #1a73e8;
    padding: 14px 32px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid #dadce0;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #f8f9fa;
    border-color: #1a73e8;
}

.system-info {
    margin-top: 16px;
    font-size: 12px;
    color: #80868b;
}

/* Hero区域新增元素样式 */
.hero-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 32px;
    margin-top: 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(26, 115, 232, 0.1);
    color: #1a73e8;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(26, 115, 232, 0.2);
    transition: all 0.3s ease;
}

.badge:hover {
    background: rgba(26, 115, 232, 0.15);
    transform: translateY(-2px);
}

.badge svg {
    width: 16px;
    height: 16px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 28px;
    font-weight: 600;
    color: #1a73e8;
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: #5f6368;
}

.hero-rating {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

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

.star {
    width: 18px;
    height: 18px;
    fill: #fbbc05;
}

.rating-text {
    font-size: 14px;
    color: #5f6368;
}

.hero-features-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
    margin-bottom: 40px;
}

.feature-check {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: #202124;
}

.feature-check svg {
    width: 20px;
    height: 20px;
    fill: #34a853;
    flex-shrink: 0;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(26, 115, 232, 0.3);
    border-radius: 50%;
    animation: particleFloat 15s infinite ease-in-out;
}

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chrome-icon-main {
    width: 400px;
    height: 400px;
    animation: float 6s ease-in-out infinite;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15));
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(2deg); }
}

.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.float-icon {
    position: absolute;
    opacity: 0.4;
    animation: floatAround 8s ease-in-out infinite;
    will-change: transform;
}

.float-icon svg {
    display: block;
    width: 100%;
    height: 100%;
}

.float-icon:nth-child(1) {
    top: 5%;
    left: 5%;
    animation-delay: 0s;
}

.float-icon:nth-child(2) {
    top: 15%;
    right: 10%;
    animation-delay: 1.5s;
}

.float-icon:nth-child(3) {
    bottom: 15%;
    left: 10%;
    animation-delay: 3s;
}

.float-icon:nth-child(4) {
    bottom: 10%;
    right: 5%;
    animation-delay: 4.5s;
}

@keyframes floatAround {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(10px, -10px) scale(1); }
    50% { transform: translate(20px, 10px) scale(1); }
    75% { transform: translate(-10px, 20px) scale(1); }
}

/* 特性区域 */
.features {
    min-height: 100vh;
    padding: 100px 48px;
    background: #fff;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(66, 133, 244, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(52, 168, 83, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

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

.section-title {
    text-align: center;
    font-size: 44px;
    font-weight: 400;
    color: #202124;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #5f6368;
    margin-bottom: 80px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 64px;
}

.feature-item {
    text-align: center;
    transition: all 0.3s ease;
    padding: 40px 24px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.feature-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.95);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-item h3 {
    font-size: 22px;
    font-weight: 500;
    color: #202124;
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 14px;
    line-height: 1.7;
    color: #5f6368;
}

/* CTA 区域 */
.cta-section {
    min-height: 100vh;
    padding: 100px 48px;
    background: linear-gradient(135deg, #4285f4 0%, #34a853 50%, #fbbc05 75%, #ea4335 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { background-position: 0 0; }
    100% { background-position: 100px 100px; }
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-container h2 {
    font-size: 48px;
    font-weight: 400;
    color: #fff;
    margin-bottom: 24px;
}

.cta-container p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 40px;
    line-height: 1.6;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #1a73e8, #1967d2);
    color: #fff;
    padding: 18px 40px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(26, 115, 232, 0.3),
                0 2px 8px rgba(26, 115, 232, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.btn-white::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.8s;
}

.btn-white:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 32px rgba(26, 115, 232, 0.4),
                0 4px 16px rgba(26, 115, 232, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, #1967d2, #1557b8);
}

.btn-white:hover::before {
    left: 100%;
}

.btn-white:active {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.btn-white svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.btn-white:hover svg {
    transform: translateY(2px);
}

.download-info-text {
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
}

/* 底部 */
.footer {
    padding: 48px 48px 32px;
    background: #f8f9fa;
    border-top: 1px solid #e8eaed;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 500;
    color: #202124;
    margin-bottom: 16px;
}

.footer-section a {
    display: block;
    font-size: 13px;
    color: #5f6368;
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: #1a73e8;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid #e8eaed;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.footer-links a {
    font-size: 12px;
    color: #5f6368;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #1a73e8;
}

.copyright {
    font-size: 12px;
    color: #5f6368;
}

/* 响应式 */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-text h1 {
        font-size: 42px;
    }

    .chrome-icon-main {
        width: 300px;
        height: 300px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .feature-item {
        padding: 30px 20px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero, .features, .cta-section {
        padding: 60px 24px;
    }
}

@media (max-width: 600px) {
    .header, .hero, .features, .cta-section, .footer {
        padding-left: 20px;
        padding-right: 20px;
    }

    .hero-text h1 {
        font-size: 32px;
    }

    .hero-badges {
        margin-bottom: 28px;
    }

    .badge {
        font-size: 12px;
        padding: 5px 12px;
    }

    .hero-features-list {
        margin-top: 20px;
        margin-bottom: 32px;
        gap: 10px;
    }

    .feature-check {
        font-size: 14px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
        margin-top: 24px;
        padding-top: 24px;
    }

    .stat-number {
        font-size: 24px;
    }

    .hero-rating {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .nav-menu {
        display: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
    }

    .hero {
        min-height: calc(100vh - 64px);
        padding: 40px 20px;
    }

    .features {
        min-height: auto;
        padding: 60px 20px;
    }

    .cta-section {
        min-height: auto;
        padding: 60px 20px;
    }

    .section-title {
        font-size: 36px;
    }

    .section-subtitle {
        font-size: 16px;
        margin-bottom: 40px;
    }

    .btn-primary, .btn-secondary, .btn-white {
        padding: 12px 24px;
        font-size: 14px;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
    }

    .feature-item h3 {
        font-size: 20px;
    }
}

/* 轮播图区域 - 叠加样式 */
.carousel-section {
    min-height: 100vh;
    padding: 100px 48px;
    background: #f8f9fa;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-container {
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: 0 48px;
}

.carousel-wrapper {
    position: relative;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    aspect-ratio: 16 / 9;
    flex-shrink: 0;
}

.carousel-images {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: scale(1.1);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
    pointer-events: none;
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
    z-index: 2;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    padding: 40px;
    color: #fff;
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
}

.carousel-slide.active .carousel-caption {
    transform: translateY(0);
}

.carousel-caption h3 {
    font-size: 28px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 12px;
}

.carousel-caption p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    max-width: 600px;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    color: #1a73e8;
}

.carousel-btn:hover {
    background: #fff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.carousel-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.carousel-prev {
    left: 24px;
}

.carousel-next {
    right: 24px;
}

.carousel-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.dot:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
    border-color: rgba(255, 255, 255, 0.6);
}

.dot.active {
    background: #fff;
    width: 32px;
    border-radius: 6px;
    border-color: rgba(255, 255, 255, 0.8);
}

/* 轮播图响应式 */
@media (max-width: 968px) {
    .carousel-section {
        min-height: 100vh;
        padding: 60px 24px;
    }

    .carousel-container {
        min-height: calc(100vh - 120px);
        padding: 0 24px;
    }

    .carousel-wrapper {
        max-width: 100%;
    }

    .carousel-caption {
        padding: 24px 20px;
    }

    .carousel-caption h3 {
        font-size: 24px;
    }

    .carousel-caption p {
        font-size: 14px;
    }

    .carousel-btn {
        width: 48px;
        height: 48px;
    }

    .carousel-prev {
        left: 12px;
    }

    .carousel-next {
        right: 12px;
    }

    .carousel-dots {
        bottom: 20px;
    }
}

@media (max-width: 600px) {
    .carousel-section {
        min-height: 100vh;
        padding: 40px 20px;
    }

    .carousel-container {
        min-height: calc(100vh - 80px);
        padding: 0 20px;
    }

    .carousel-wrapper {
        max-width: 100%;
    }

    .carousel-caption {
        padding: 20px 16px;
    }

    .carousel-caption h3 {
        font-size: 20px;
        margin-bottom: 8px;
    }

    .carousel-caption p {
        font-size: 13px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-prev {
        left: 8px;
    }

    .carousel-next {
        right: 8px;
    }

    .carousel-dots {
        bottom: 15px;
        gap: 8px;
    }

    .dot {
        width: 10px;
        height: 10px;
    }

    .dot.active {
        width: 24px;
    }
}