/* ============================================
   广州合声优客有限公司 - 官方网站样式
   ============================================ */

/* CSS Variables */
:root {
    --primary: #C62828;
    --primary-dark: #B71C1C;
    --primary-light: #FFEBEE;
    --secondary: #E53935;
    --dark: #1A1A2E;
    --dark-secondary: #16213E;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #F7F8FA;
    --bg-white: #FFFFFF;
    --border: #E8E8E8;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --max-width: 1200px;
    --header-height: 72px;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    display: block;
}

.footer-brand .logo-img {
    height: 36px;
    filter: brightness(0) invert(1);
}

.nav ul {
    display: flex;
    gap: 32px;
}

.nav a {
    font-size: 15px;
    color: var(--text);
    font-weight: 500;
    position: relative;
    padding: 8px 0;
    transition: color 0.3s ease;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
    border-radius: 1px;
}

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

.nav a:hover::after,
.nav a.active::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1A1A2E 0%, #2D132C 30%, #7B1F2A 70%, #C62828 100%);
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #FFFFFF;
    max-width: 720px;
}

.hero-content h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 36px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: #FFFFFF;
    color: var(--primary-dark);
}

.btn-primary:hover {
    background: #F0F0F0;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background: transparent;
    color: #FFFFFF;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #FFFFFF;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Hero Stats */
.hero-stats {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    text-align: center;
    color: #FFFFFF;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    line-height: 1;
    display: block;
    margin-bottom: 8px;
}

.stat-suffix {
    font-size: 42px;
    font-weight: 700;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
    display: block;
}

/* ============================================
   Section Styles
   ============================================ */
.section {
    padding: 100px 0;
}

.bg-light {
    background: var(--bg-light);
}

.bg-dark {
    background: var(--dark-secondary);
    color: #FFFFFF;
}

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

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.section-header.light h2 {
    color: #FFFFFF;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    margin-top: 20px;
}

.section-header.light p {
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Products Section
   ============================================ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary);
}

.product-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

.product-card > p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-card ul {
    list-style: none;
}

.product-card ul li {
    font-size: 13px;
    color: var(--text-muted);
    padding: 4px 0;
    padding-left: 20px;
    position: relative;
}

.product-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

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

.capability-item {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 32px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.capability-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.15;
    line-height: 1;
    flex-shrink: 0;
}

.capability-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
}

.capability-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

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

.solution-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 40px 28px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.solution-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.solution-emoji {
    font-size: 36px;
}

.solution-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.solution-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

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

.case-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.case-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}

.case-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.case-card > p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-meta span {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-light);
    padding: 4px 10px;
    border-radius: 4px;
}

/* ============================================
   About
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-intro {
    margin-bottom: 40px;
}

.about-intro h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
}

.about-intro p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.value-item {
    padding: 24px 20px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.value-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.value-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.company-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 32px 28px;
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.company-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary);
}

.company-card ul li {
    display: flex;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.company-card ul li:last-child {
    border-bottom: none;
}

.cert-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.company-card ul li strong {
    display: block;
    font-size: 15px;
    color: var(--dark);
    margin-bottom: 4px;
}

.company-card ul li p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================================
   Contact
   ============================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    font-size: 24px;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(198, 40, 40, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 16px;
    color: #FFFFFF;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 36px 32px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form h3 {
    font-size: 22px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.08);
    color: #FFFFFF;
    font-family: inherit;
    transition: border-color 0.3s ease, background 0.3s ease;
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.12);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    background: var(--primary);
    color: #FFFFFF;
    margin-top: 8px;
}

.contact-form .btn-primary:hover {
    background: var(--primary-dark);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-img {
    height: 36px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
}

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

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .company-card {
        position: static;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-white);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        padding: 100px 32px 32px;
        transition: right 0.3s ease;
        z-index: 1000;
    }

    .nav.active {
        right: 0;
    }

    .nav ul {
        flex-direction: column;
        gap: 8px;
    }

    .nav a {
        display: block;
        padding: 12px 0;
        font-size: 16px;
    }

    .hero-content h2 {
        font-size: 32px;
    }

    .hero-content p {
        font-size: 15px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-top: 48px;
    }

    .stat-number,
    .stat-suffix {
        font-size: 32px;
    }

    .product-grid,
    .solutions-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .capabilities-grid {
        grid-template-columns: 1fr;
    }

    .about-values {
        grid-template-columns: 1fr;
    }

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

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

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

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 26px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

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