/* ==========================================================================
   速云梯机场 - 现代极客极速版 Design System
   ========================================================================== */

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-alt: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-dark-card: #1e293b;
    
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 动态背景光晕 */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.45;
    animation: floatOrb 22s infinite ease-in-out alternate;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.5) 0%, rgba(79, 70, 229, 0) 70%);
    top: -200px;
    left: -150px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.4) 0%, rgba(59, 130, 246, 0) 70%);
    top: 45%;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, rgba(236, 72, 153, 0) 70%);
    bottom: -200px;
    left: 25%;
    animation-delay: -14s;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(80px, 60px) scale(1.08); }
    100% { transform: translate(-40px, 100px) scale(0.95); }
}

/* 导航栏 Navbar */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    z-index: 1000;
    padding: 14px 0;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.brand-icon {
    width: 34px;
    height: 34px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.brand-icon svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: white !important;
    padding: 9px 22px;
    border-radius: var(--radius-full);
    font-weight: 600 !important;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    transition: var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero 核心区域 */
.hero-section {
    padding: 100px 0 70px;
    text-align: center;
    position: relative;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.2);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-tag-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.18;
    margin-bottom: 24px;
    letter-spacing: -1px;
    color: var(--text-main);
}

.hero-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 19px;
    color: var(--text-muted);
    margin: 0 auto 36px;
    max-width: 760px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 50px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    font-size: 17px;
    font-weight: 600;
    padding: 15px 38px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px rgba(79, 70, 229, 0.5);
}

.btn-secondary {
    background: white;
    color: var(--text-main);
    font-size: 17px;
    font-weight: 600;
    padding: 14px 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-secondary:hover {
    background: var(--bg-alt);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(226, 232, 240, 0.8);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.feature-badge svg {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

/* 客户端覆盖 Showcase (Platforms) */
.platforms-section {
    padding: 30px 0 60px;
}

.platforms-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px 40px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.platforms-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-light);
    font-weight: 700;
    margin-bottom: 24px;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 20px;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    border-radius: var(--radius-md);
    background: white;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.platform-item:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.platform-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.platform-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.platform-sub {
    font-size: 12px;
    color: var(--text-light);
}

/* 通用 Section 标题 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}

.section-tag {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 10px;
    display: block;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
    margin-bottom: 14px;
    line-height: 1.25;
}

.section-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* 核心优势 Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    padding: 36px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(99, 102, 241, 0.4);
}

.feature-icon-box {
    width: 52px;
    height: 52px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 22px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 8px 18px rgba(79, 70, 229, 0.3);
}

.feature-icon-box svg {
    width: 26px;
    height: 26px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* 套餐价格 Pricing Section */
.pricing-section {
    background: linear-gradient(to bottom, #f8fafc 0%, #edf2f7 100%);
    position: relative;
}

.pricing-toggle-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    margin-bottom: 48px;
}

.pricing-toggle-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
}

.pricing-toggle-label.active {
    color: var(--text-main);
}

.toggle-switch {
    width: 56px;
    height: 30px;
    background: var(--border-hover);
    border-radius: 15px;
    padding: 3px;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.toggle-switch.yearly {
    background: var(--primary);
}

.toggle-circle {
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.toggle-switch.yearly .toggle-circle {
    transform: translateX(26px);
}

.discount-badge {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success);
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    border: 1.5px solid var(--border);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

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

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 10px 30px -5px rgba(79, 70, 229, 0.2), var(--shadow-lg);
    background: white;
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 5px 20px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.plan-name {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 8px;
}

.plan-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
    min-height: 42px;
}

.price-box {
    margin-bottom: 28px;
}

.price {
    font-size: 46px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
    letter-spacing: -1px;
}

.price .currency {
    font-size: 24px;
    font-weight: 600;
    margin-right: 2px;
}

.price .period {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin-bottom: 36px;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text-main);
    border-bottom: 1px dashed var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

.pricing-btn {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    text-decoration: none;
}

.pricing-btn.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.pricing-btn.btn-outline:hover {
    background: var(--primary-light);
}

.pricing-btn.btn-solid {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

.pricing-btn.btn-solid:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(79, 70, 229, 0.45);
}

/* 节点监控 Status Section */
.status-section {
    background: var(--bg-dark);
    color: white;
    position: relative;
    overflow: hidden;
}

.status-section .section-title,
.status-section .section-subtitle {
    color: white;
}

.status-section .section-subtitle {
    color: #94a3b8;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 20px;
}

.status-card {
    background: var(--bg-dark-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.status-card:hover {
    border-color: rgba(99, 102, 241, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.status-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.node-flag-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 16px;
}

.flag {
    font-size: 20px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--success);
    background: rgba(16, 185, 129, 0.12);
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
    animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.node-tags {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.node-tag {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.node-tag.iplc {
    background: rgba(79, 70, 229, 0.25);
    color: #a5b4fc;
    border: 1px solid rgba(129, 140, 248, 0.3);
}

.status-metrics {
    display: flex;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-item {
    text-align: left;
}

.metric-label {
    font-size: 12px;
    color: #94a3b8;
    margin-bottom: 4px;
}

.metric-val {
    font-size: 18px;
    font-weight: 700;
    color: #06b6d4;
}

/* 真实用户评价 Testimonials */
.reviews-section {
    background: var(--bg-main);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.review-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.review-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}

.reviewer-profile {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.avatar-badge {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25);
}

.reviewer-meta {
    flex-grow: 1;
}

.reviewer-name {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-main);
}

.reviewer-role {
    font-size: 13px;
    color: var(--text-muted);
}

.review-stars {
    color: #f59e0b;
    font-size: 14px;
    letter-spacing: 2px;
}

.review-text {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
    font-style: normal;
}

/* FAQ 常见问题 */
.faq-section {
    background: white;
}

.faq-list {
    max-width: 840px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-main);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: var(--primary);
    background: white;
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 22px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.faq-question h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
}

.faq-icon {
    width: 22px;
    height: 22px;
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease-out, padding 0.35s ease-out;
    padding: 0 28px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 28px 24px;
}

.faq-answer p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
}

/* 知识库板块 Knowledge */
.knowledge-section {
    background: var(--bg-main);
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.knowledge-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

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

.knowledge-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    width: fit-content;
}

.knowledge-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
    line-height: 1.4;

    /* 最多显示2行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.knowledge-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;

    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more-link {
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.knowledge-card:hover .read-more-link {
    gap: 10px;
}

/* 页脚 Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 70px 0 36px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-desc {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #64748b;
    font-size: 14px;
}

/* 响应式适配 Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 65px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 30px 24px;
        box-shadow: var(--shadow-xl);
        border-bottom: 1px solid var(--border);
        display: none;
        gap: 20px;
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 28px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}