/* W5 - 橙色活力风格 */

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

:root {
    --primary: #ff6f00;
    --secondary: #ff9100;
    --accent: #ffab00;
    --dark: #212121;
    --gray: #616161;
    --light: #f5f5f5;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: var(--dark);
    line-height: 1.6;
}

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

/* 顶部条 */
.top-bar {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
    padding: 10px;
    font-size: 14px;
    font-weight: 600;
}

/* 导航 */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 28px;
    font-weight: 900;
}

.brand-logo {
    color: var(--primary);
    font-size: 32px;
}

.nav {
    display: flex;
    gap: 35px;
}

.nav a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
    position: relative;
}

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

.nav a:hover:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
}

.header-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s;
}

.header-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 111, 0, 0.4);
}

/* Hero */
.hero-large {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    padding: 100px 0;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge-new {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 25px;
}

.hero-content h1 {
    font-size: 52px;
    font-weight: 900;
    margin-bottom: 15px;
    color: var(--dark);
}

.hero-content h2 {
    font-size: 24px;
    color: var(--gray);
    margin-bottom: 30px;
    font-weight: 400;
}

.hero-features {
    list-style: none;
    margin-bottom: 35px;
}

.hero-features li {
    padding: 10px 0;
    font-size: 18px;
    color: var(--gray);
}

.cta-buttons {
    display: flex;
    gap: 20px;
}

.btn-cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 18px 45px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    transition: all 0.3s;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(255, 111, 0, 0.4);
}

.btn-secondary {
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 18px 45px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    transition: all 0.3s;
}

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

.hero-stats {
    display: grid;
    gap: 25px;
}

.stat-large {
    background: var(--white);
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s;
}

.stat-large:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(255, 111, 0, 0.2);
}

.number {
    font-size: 42px;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 10px;
}

.label {
    font-size: 16px;
    color: var(--gray);
}

/* 特色功能 */
.features-modern {
    padding: 80px 0;
    background: var(--white);
}

.title-center {
    text-align: center;
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 60px;
    color: var(--dark);
}

.features-flex {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.feat-card {
    background: var(--light);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
}

.feat-card:hover {
    background: var(--white);
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feat-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin: 0 auto 20px;
}

.feat-icon.orange { background: rgba(255, 111, 0, 0.1); }
.feat-icon.blue { background: rgba(33, 150, 243, 0.1); }
.feat-icon.green { background: rgba(76, 175, 80, 0.1); }
.feat-icon.purple { background: rgba(156, 39, 176, 0.1); }

.feat-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark);
}

.feat-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* 产品展示 */
.products-showcase {
    padding: 80px 0;
    background: var(--light);
}

.product-tabs {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tab-item {
    background: var(--white);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.tab-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.tab-text h3 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--dark);
}

.tab-text p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 25px;
    line-height: 1.8;
}

.check-list {
    list-style: none;
    margin-bottom: 30px;
}

.check-list li {
    padding: 10px 0;
    color: var(--gray);
    font-size: 15px;
}

.link-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s;
}

.link-more:hover {
    margin-left: 10px;
}

.tab-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-box {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
    box-shadow: 0 15px 40px rgba(255, 111, 0, 0.3);
}

/* 下载区 */
.download-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.download-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-left {
    color: var(--white);
}

.download-left h2 {
    font-size: 42px;
    margin-bottom: 15px;
}

.download-left p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.download-btns {
    display: grid;
    gap: 20px;
}

.dl-btn {
    background: var(--white);
    color: var(--dark);
    padding: 20px 25px;
    border-radius: 12px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s;
}

.dl-btn:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.dl-btn span {
    font-size: 36px;
}

.dl-btn strong {
    display: block;
    font-size: 18px;
    margin-bottom: 5px;
}

.dl-btn small {
    font-size: 13px;
    color: var(--gray);
}

.phone-mockup {
    font-size: 200px;
    text-align: center;
}

/* 评价 */
.reviews-section {
    padding: 80px 0;
    background: var(--white);
}

.reviews-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--light);
    padding: 35px;
    border-radius: 15px;
    transition: all 0.3s;
}

.review-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.stars {
    color: var(--accent);
    font-size: 20px;
    margin-bottom: 15px;
}

.review-card p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.reviewer strong {
    display: block;
    color: var(--dark);
    margin-bottom: 5px;
}

.reviewer span {
    font-size: 14px;
    color: var(--gray);
}

/* CTA最终 */
.cta-final {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffe0b2, #fff3e0);
    text-align: center;
}

.cta-final h2 {
    font-size: 48px;
    margin-bottom: 15px;
    color: var(--dark);
}

.cta-final p {
    font-size: 20px;
    color: var(--gray);
    margin-bottom: 40px;
}

.btn-final {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 20px 60px;
    border-radius: 35px;
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
    display: inline-block;
    transition: all 0.3s;
}

.btn-final:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(255, 111, 0, 0.4);
}

/* 页脚 */
.footer-main {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--primary);
}

.footer-about p {
    color: var(--light);
}

.footer-col h4 {
    margin-bottom: 20px;
    color: var(--primary);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    color: var(--light);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-copy {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copy p {
    color: var(--light);
    font-size: 14px;
    margin-bottom: 8px;
}

.risk-note {
    font-size: 12px !important;
    opacity: 0.7;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero-layout {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .tab-content {
        grid-template-columns: 1fr;
    }
    
    .download-box {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .nav {
        gap: 15px;
    }
}