/* 六翻天·进销存官网 - 对齐系统主题色 #409eff */
:root {
    --primary: #409eff;
    --primary-dark: #337ecc;
    --primary-light: #79bbff;
    --secondary: #66b1ff;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #f7f8fa;
    --bg-white: #ffffff;
    --border: #e8e8e8;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(64, 158, 255, 0.18);
    --radius: 12px;
    --header-height: 70px;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* ========== Header ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 var(--border);
    z-index: 1000;
}

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

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 18px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    color: var(--text);
    border-radius: 6px;
    transition: all 0.3s;
}

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

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text);
}

.nav-dropdown a:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(64, 158, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(64, 158, 255, 0.45);
}

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text);
    cursor: pointer;
}

/* ========== Hero Slider（左右分栏，无遮罩） ========== */
.hero {
    margin-top: var(--header-height);
    position: relative;
    height: 560px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #e8f4ff 0%, #d6ebff 45%, #c8e4ff 100%);
}

.hero-slide-bg::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -60px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.15) 0%, transparent 70%);
}

.hero-slide-bg::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -80px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.1) 0%, transparent 70%);
}

.hero-slide-inner {
    position: relative;
    z-index: 2;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    gap: 48px;
}

.hero-slide-text {
    flex: 1;
    min-width: 0;
}

.hero-slide-text h1 {
    font-size: 42px;
    font-weight: 700;
    color: #1a5fa8;
    margin-bottom: 20px;
    line-height: 1.35;
}

.hero-slide-text p {
    font-size: 17px;
    color: #3d6d9e;
    margin-bottom: 32px;
    line-height: 1.8;
    max-width: 480px;
}

.hero-slide-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 0;
}

.hero-device {
    position: relative;
    width: 100%;
    max-width: 520px;
}

.hero-device-screen {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(64, 158, 255, 0.25), 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 3px solid #fff;
    display: block;
    background: #fff;
}

.hero-device-laptop {
    position: relative;
    padding-bottom: 8px;
}

.hero-device-laptop::after {
    content: '';
    display: block;
    width: 108%;
    margin-left: -4%;
    height: 12px;
    background: linear-gradient(180deg, #d0d8e4 0%, #b8c4d4 100%);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.hero-device-group {
    position: relative;
    width: 100%;
    max-width: 480px;
    height: 340px;
}

.hero-device-group .hero-device-laptop {
    position: absolute;
    top: 0;
    left: 0;
    width: 78%;
    z-index: 2;
}

.hero-device-group .hero-device-phone {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 28%;
    z-index: 3;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(64, 158, 255, 0.3);
    border: 3px solid #fff;
}

.hero-illus {
    width: 100%;
    max-width: 400px;
    opacity: 0.9;
}

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

.hero-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(64, 158, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.hero-dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 5px;
}

.hero-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 3;
    pointer-events: none;
}

.hero-arrow {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(64, 158, 255, 0.2);
    color: var(--primary);
    font-size: 16px;
    cursor: pointer;
    pointer-events: all;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(64, 158, 255, 0.15);
}

.hero-arrow:hover {
    background: #fff;
    box-shadow: 0 4px 16px rgba(64, 158, 255, 0.25);
}

@media (max-width: 900px) {
    .hero {
        height: auto;
        min-height: 540px;
    }

    .hero-slider {
        min-height: 540px;
    }

    .hero-slide-inner {
        flex-direction: column;
        height: auto;
        min-height: 100%;
        padding: 36px 20px 56px;
        gap: 24px;
        text-align: center;
    }

    .hero-slide-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-slide-text h1 {
        font-size: 28px;
    }
}

/* ========== Section Common ========== */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(64, 158, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 12px;
}

/* ========== Product Cards ========== */
.products-section {
    background: var(--bg-light);
}

.product-main {
    background: white;
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 32px;
    box-shadow: var(--shadow);
}

.product-main h3 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 12px;
}

.product-main p {
    color: var(--text-light);
    margin-bottom: 24px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.product-tag {
    padding: 8px 20px;
    background: var(--bg-light);
    border-radius: 20px;
    font-size: 14px;
    color: var(--text);
    transition: all 0.3s;
    cursor: pointer;
}

.product-tag:hover {
    background: var(--primary);
    color: white;
}

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

.product-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.product-card-img {
    height: 160px;
    background: linear-gradient(135deg, #ecf5ff, #d9ecff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.product-card-body {
    padding: 24px;
}

.product-card-body h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.product-card-body p {
    font-size: 14px;
    color: var(--text-light);
}

/* ========== Features Tabs ========== */
.features-section {
    background: white;
}

.feature-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
}

.feature-tab {
    padding: 12px 24px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: white;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
}

.feature-tab:hover,
.feature-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.feature-panel {
    display: none;
    align-items: center;
    gap: 48px;
}

.feature-panel.active {
    display: flex;
}

.feature-text {
    flex: 1;
}

.feature-text h3 {
    font-size: 28px;
    margin-bottom: 16px;
    color: var(--text);
}

.feature-text .highlight {
    color: var(--primary);
}

.feature-text p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-image {
    flex: 1;
    max-width: 560px;
}

.feature-shot {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

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

.plan-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.plan-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: all 0.3s;
}

.plan-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.plan-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, #ecf5ff 0%, #fff 100%);
}

.plan-card h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--primary);
}

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

.plan-badge {
    display: inline-block;
    padding: 2px 10px;
    background: var(--primary);
    color: white;
    border-radius: 10px;
    font-size: 12px;
    margin-bottom: 10px;
}

.feature-mockup {
    background: linear-gradient(135deg, #f0f4ff, #e8f0fe);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.mockup-header {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
}

.mockup-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #ffbd2e; }
.mockup-dot.green { background: #28ca41; }

.mockup-content {
    background: white;
    border-radius: 8px;
    padding: 20px;
    min-height: 280px;
}

.mockup-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.mockup-row:last-child {
    border-bottom: none;
}

.mockup-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.mockup-info h5 {
    font-size: 14px;
    margin-bottom: 2px;
}

.mockup-info span {
    font-size: 12px;
    color: var(--text-muted);
}

.mockup-badge {
    margin-left: auto;
    padding: 4px 10px;
    background: rgba(64, 158, 255, 0.1);
    color: var(--primary);
    border-radius: 12px;
    font-size: 12px;
}

/* ========== Testimonials ========== */
.testimonials-section {
    background: var(--bg-light);
}

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

.testimonial-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-4px);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.testimonial-meta h4 {
    font-size: 16px;
    margin-bottom: 2px;
}

.testimonial-meta span {
    font-size: 13px;
    color: var(--text-muted);
}

.testimonial-stars {
    color: #ffb800;
    margin-bottom: 12px;
}

.testimonial-text {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.testimonial-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ========== Services ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    text-align: center;
    padding: 32px 24px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, rgba(64, 158, 255, 0.1), rgba(102, 177, 255, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary);
}

.service-card h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.service-card p {
    font-size: 14px;
    color: var(--text-light);
}

/* ========== Stats ========== */
.stats-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item h3 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-item h3 span {
    font-size: 24px;
}

.stat-item p {
    font-size: 16px;
    opacity: 0.9;
}

/* ========== CTA ========== */
.cta-section {
    background: var(--bg-light);
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 32px;
}

/* ========== Footer ========== */
.footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 24px;
}

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

.footer-brand h3 {
    font-size: 22px;
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-contact {
    font-size: 14px;
}

.footer-contact p {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-col h4 {
    color: white;
    font-size: 16px;
    margin-bottom: 20px;
}

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

.footer-col a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-bottom p {
    margin-bottom: 6px;
}

/* ========== 悬浮联系（电话 + 企业微信） ========== */
.float-contact-group {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.float-wecom-kf {
    position: static;
}

.float-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.wecom-kf-btn {
    background: linear-gradient(135deg, #2aae67, #1e8e53);
    box-shadow: 0 4px 20px rgba(42, 174, 103, 0.35);
}

.wecom-kf-btn:hover {
    transform: scale(1.08);
}

.phone-float-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 20px rgba(64, 158, 255, 0.35);
}

.phone-float-btn:hover {
    transform: scale(1.08);
}

.wecom-kf-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    text-align: center;
}

.wecom-kf-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e8f8ef, #d4f0e0);
    color: #2aae67;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.wecom-kf-card h3 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 12px;
}

.wecom-kf-card p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

.wecom-kf-card__subtitle {
    font-size: 14px;
    color: var(--primary);
    margin: -12px 0 16px;
}

.wecom-kf-card__qr {
    width: 180px;
    height: 180px;
    margin: 0 auto 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
    background: #fff;
}

.wecom-kf-card__hint {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 12px;
}

@media (max-width: 768px) {
    .wecom-kf-card__qr {
        display: none;
    }
}

.wecom-kf-offline {
    background: #f8fafc;
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    border: 1px dashed var(--border);
}

.wecom-kf-offline i {
    font-size: 40px;
    color: var(--text-light);
    margin-bottom: 16px;
}

.wecom-kf-offline h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text);
}

.wecom-kf-offline p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.wecom-kf-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.wecom-kf-modal[hidden] {
    display: none !important;
}

.wecom-kf-modal__box {
    position: relative;
    background: #fff;
    border-radius: 12px;
    padding: 32px 28px;
    max-width: 360px;
    width: 100%;
    text-align: center;
}

.wecom-kf-modal__close {
    position: absolute;
    top: 12px;
    right: 14px;
    border: none;
    background: none;
    font-size: 24px;
    color: var(--text-light);
    cursor: pointer;
    line-height: 1;
}

.wecom-kf-modal__box h4 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text);
}

.wecom-kf-modal__tip {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.wecom-kf-modal__qr {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    display: block;
    border-radius: 8px;
}

.wecom-kf-modal__link {
    display: inline-block;
    width: 100%;
}

body.wecom-kf-modal-open {
    overflow: hidden;
}

/* ========== Page Header (sub pages) ========== */
.page-hero {
    margin-top: var(--header-height);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 80px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 40px;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.9;
}

/* ========== About Page ========== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-intro-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

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

.about-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 48px;
}

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

.value-card i {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}

.value-card h4 {
    margin-bottom: 8px;
}

.value-card p {
    font-size: 14px;
    color: var(--text-light);
}

/* ========== Contact Page ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
}

.contact-info-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: var(--radius);
}

.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-info-item i {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    flex-shrink: 0;
}

.contact-info-item h4 {
    margin-bottom: 4px;
}

.contact-info-item p {
    color: var(--text-light);
    font-size: 15px;
}

/* ========== Phone Actions (拨打 / 复制) ========== */
.phone-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.phone-actions__tel {
    color: var(--primary);
    font-weight: 500;
    -webkit-tap-highlight-color: rgba(64, 158, 255, 0.2);
}

.phone-actions__tel:hover,
.phone-actions__tel:active {
    color: var(--primary-dark);
}

.phone-actions-toast {
    position: fixed;
    left: 50%;
    bottom: 80px;
    transform: translateX(-50%) translateY(20px);
    background: rgba(0, 0, 0, 0.78);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
}

.phone-actions-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 电脑端拨打弹窗 */
.phone-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.phone-modal[hidden] {
    display: none !important;
}

.phone-modal__box {
    position: relative;
    background: #fff;
    border-radius: 12px;
    padding: 32px 28px;
    max-width: 360px;
    width: 100%;
    text-align: center;
}

.phone-modal__close {
    position: absolute;
    top: 12px;
    right: 14px;
    border: none;
    background: none;
    font-size: 24px;
    color: var(--text-light);
    cursor: pointer;
    line-height: 1;
}

.phone-modal__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ecf5ff, #d9ecff);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.phone-modal__box h4 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text);
}

.phone-modal__tip {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.phone-modal__number {
    font-size: 26px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.phone-modal__copy {
    width: 100%;
    gap: 6px;
}

body.phone-modal-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .phone-actions__tel {
        font-size: inherit;
    }
}

.contact-form {
    background: white;
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.solution-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

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

.solution-card-img {
    height: 180px;
    background: linear-gradient(135deg, #ecf5ff, #d9ecff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 56px;
}

.solution-card-body {
    padding: 24px;
}

.solution-card-body h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

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

.solution-card-body ul {
    margin-top: 16px;
}

.solution-card-body li {
    font-size: 13px;
    color: var(--text-light);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.solution-card-body li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
}

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

    .product-grid,
    .testimonial-grid,
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .feature-panel.active {
        flex-direction: column;
    }

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

@media (max-width: 768px) {
    :root {
        --header-height: 52px;
    }

    .container {
        padding: 0 16px;
    }

    .nav,
    .header-actions .btn-outline {
        display: none;
    }

    .header .container {
        gap: 8px;
    }

    .logo {
        gap: 6px;
        min-width: 0;
        flex: 1;
    }

    .logo-img {
        width: 30px;
        height: 30px;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 14px;
        font-weight: 600;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .header-actions {
        gap: 0;
        flex-shrink: 0;
    }

    .header-actions .btn-primary {
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 16px;
        white-space: nowrap;
        box-shadow: 0 2px 8px rgba(64, 158, 255, 0.25);
    }

    .header-actions .btn-primary:hover {
        transform: none;
    }

    .mobile-toggle {
        display: block;
        font-size: 20px;
        padding: 4px;
        margin-left: 4px;
        flex-shrink: 0;
    }

    .nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        padding: 16px;
        box-shadow: var(--shadow);
    }

    .hero {
        height: auto;
        min-height: 500px;
    }

    .hero-slider {
        min-height: 500px;
    }

    .hero-slide-inner {
        height: auto;
        min-height: 100%;
        padding: 20px 16px 48px;
        gap: 20px;
    }

    .hero-slide-text h1 {
        font-size: 22px;
        line-height: 1.35;
        margin-bottom: 12px;
    }

    .hero-slide-text p {
        font-size: 13px;
        margin-bottom: 18px;
        line-height: 1.65;
    }

    .hero-actions {
        gap: 10px;
    }

    .hero-actions .btn,
    .hero-actions .btn-lg {
        padding: 8px 18px;
        font-size: 13px;
        border-radius: 20px;
    }

    .hero-actions .btn-primary:hover,
    .hero-actions .btn-outline:hover {
        transform: none;
    }

    .hero-arrow {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }

    .hero-arrows {
        padding: 0 8px;
    }

    .hero-slide-visual {
        width: 100%;
    }

    .hero-device {
        max-width: 280px;
        margin: 0 auto;
    }

    .hero-device-group {
        max-width: 260px;
        height: 200px;
        margin: 0 auto;
    }

    .hero-content h1 {
        font-size: 22px;
    }

    .hero-content p {
        font-size: 14px;
    }

    .btn-lg {
        padding: 10px 22px;
        font-size: 14px;
    }

    .section {
        padding: 48px 0;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .section-header p {
        font-size: 14px;
    }

    .page-hero {
        padding: 32px 0;
    }

    .page-hero h1 {
        font-size: 24px;
    }

    .page-hero p {
        font-size: 14px;
    }

    .cta-section h2 {
        font-size: 22px;
    }

    .cta-section p {
        font-size: 14px;
    }

    .float-contact-group {
        right: 12px;
        bottom: 16px;
        gap: 8px;
    }

    .float-btn {
        width: 46px;
        height: 46px;
        font-size: 18px;
    }

    .plan-grid,
    .product-grid,
    .testimonial-grid,
    .solutions-grid,
    .services-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

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

    .stat-item h3 {
        font-size: 28px;
    }

    .feature-tabs {
        gap: 6px;
    }

    .feature-tab {
        padding: 8px 14px;
        font-size: 12px;
    }
}

@media (max-width: 360px) {
    .logo-text {
        font-size: 12px;
        max-width: 7em;
    }

    .header-actions .btn-primary {
        padding: 5px 10px;
        font-size: 11px;
    }

    .hero-slide-text h1 {
        font-size: 20px;
    }

    .hero-actions .btn,
    .hero-actions .btn-lg {
        padding: 7px 14px;
        font-size: 12px;
    }
}