/* ===================================
   费克托 - 企业网站样式
   =================================== */

/* ===== 基础重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色 */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fc;
    --color-bg-dark: #0a0a1a;
    --color-text: #1a1a2e;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-purple: #a855f7;
    --color-pink: #ec4899;
    --color-border: #e5e7eb;
    --color-border-light: #f0f0f5;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #6366f1, #a855f7);
    --gradient-primary-light: linear-gradient(135deg, #818cf8, #c084fc);
    --gradient-text: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
    --gradient-text-light: linear-gradient(135deg, #a78bfa, #e9d5ff, #f9a8d4);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.18);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
    
    /* 间距 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* 字体 */
    --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    
    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}

.btn-sm {
    padding: 10px 20px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-light {
    background: #fff;
    color: var(--color-text);
    box-shadow: var(--shadow-lg);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===== 渐变文字 ===== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.gradient-text-light {
    background: var(--gradient-text-light);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.9);
    border-bottom-color: var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    display: flex;
    line-height: 0;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float-orb 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #6366f1, transparent);
    top: -100px;
    right: -50px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #a855f7, transparent);
    bottom: -100px;
    left: -50px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #ec4899, transparent);
    top: 40%;
    left: 40%;
    animation-delay: -10s;
    opacity: 0.2;
}

@keyframes float-orb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 80%);
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -2px;
    margin-bottom: 24px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1;
    display: flex;
    align-items: baseline;
}

.stat-suffix {
    font-size: 1.2rem;
    margin-left: 2px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 6px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero 视觉区域 */
.hero-visual {
    position: relative;
}

.hero-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.hero-card-main {
    padding: 0;
    overflow: hidden;
    animation: float-card 6s ease-in-out infinite;
}

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border-light);
    background: rgba(248, 249, 252, 0.5);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.card-dots span:nth-child(1) { background: #ff5f57; }
.card-dots span:nth-child(2) { background: #ffbd2e; }
.card-dots span:nth-child(3) { background: #28ca42; }

.card-title {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.card-body {
    padding: 24px;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 16px;
    font-variant-numeric: tabular-nums;
}

.metric-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 60px;
    margin-bottom: 24px;
}

.metric-chart span {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    opacity: 0.7;
    transition: opacity 0.3s;
    animation: chart-bar 2s ease-in-out infinite;
}

.metric-chart span:nth-child(2n) {
    animation-delay: 0.2s;
}

.metric-chart span:nth-child(3n) {
    animation-delay: 0.4s;
}

@keyframes chart-bar {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.mini-metric {
    padding: 14px;
    background: rgba(248, 249, 252, 0.6);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
}

.mini-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.mini-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

/* 浮动卡片 */
.hero-card-float {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    z-index: 2;
}

.hero-card-float-1 {
    top: -20px;
    right: -30px;
    animation: float-card 5s ease-in-out infinite;
    animation-delay: -1s;
}

.hero-card-float-2 {
    bottom: -20px;
    left: -30px;
    animation: float-card 5s ease-in-out infinite;
    animation-delay: -2.5s;
}

.float-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-purple {
    background: linear-gradient(135deg, #a855f7, #6366f1);
}

.icon-green {
    background: linear-gradient(135deg, #10b981, #059669);
}

.float-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text);
}

.float-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-radius: 12px;
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    margin: 8px auto 0;
    animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes scroll-dot {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

/* ===== 信任栏 ===== */
.trust-bar {
    padding: 48px 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.trust-label {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 28px;
    font-weight: 500;
}

.trust-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 48px;
}

.trust-logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-muted);
    opacity: 0.6;
    transition: var(--transition);
    cursor: default;
}

.trust-logo:hover {
    opacity: 1;
    color: var(--color-text);
    transform: scale(1.05);
}

/* ===== 通用 Section Header ===== */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.08);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.section-tag.light {
    background: rgba(255, 255, 255, 0.1);
    color: #c4b5fd;
}

.section-title {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -1px;
    margin-bottom: 16px;
    color: var(--color-text);
}

.section-title.light {
    color: #fff;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.section-desc.light {
    color: rgba(255, 255, 255, 0.6);
}

/* ===== 关于我们 ===== */
.about {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: center;
}

.about-image-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-visual {
    position: relative;
    aspect-ratio: 1;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
}

.about-orb-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #6366f1, transparent);
    top: -50px;
    right: -50px;
    opacity: 0.5;
}

.about-orb-2 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, #a855f7, transparent);
    bottom: -50px;
    left: -50px;
    opacity: 0.4;
}

.about-icon-grid {
    position: absolute;
    inset: 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
}

.about-icon-item {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.about-icon-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.about-center-text {
    position: relative;
    z-index: 1;
    text-align: center;
}

.about-big-num {
    font-size: 5rem;
    font-weight: 900;
    background: var(--gradient-text-light);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.about-small-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
    margin-top: 8px;
}

.about-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
}

.about-text {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 32px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.about-feature h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--color-text);
}

.about-feature p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ===== 服务 ===== */
.services {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}

.icon-indigo {
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: #fff;
}

.icon-purple {
    background: linear-gradient(135deg, #a855f7, #c084fc);
    color: #fff;
}

.icon-pink {
    background: linear-gradient(135deg, #ec4899, #f472b6);
    color: #fff;
}

.icon-blue {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    color: #fff;
}

.icon-teal {
    background: linear-gradient(135deg, #14b8a6, #2dd4bf);
    color: #fff;
}

.icon-orange {
    background: linear-gradient(135deg, #f97316, #fb923c);
    color: #fff;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
}

.service-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.service-desc {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-list {
    margin-bottom: 24px;
}

.service-list li {
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
    padding-left: 24px;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
}

.service-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 5px;
    height: 9px;
    border-right: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

.service-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: var(--transition);
    display: inline-block;
}

.service-link:hover {
    transform: translateX(4px);
}

/* ===== 核心优势 ===== */
.features {
    padding: 100px 0;
    background: var(--color-bg-dark);
    position: relative;
    overflow: hidden;
}

.features-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.1), transparent 50%);
}

.features .container {
    position: relative;
    z-index: 1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.feature-card {
    padding: 36px 28px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(168, 85, 247, 0.05));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-num {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-text-light);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
    line-height: 1;
    position: relative;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    position: relative;
}

.feature-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    position: relative;
}

/* ===== 客户评价 ===== */
.testimonials {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.testimonial-card {
    background: #fff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    position: relative;
    transition: var(--transition);
}

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

.testimonial-quote {
    font-size: 5rem;
    font-weight: 900;
    line-height: 0.8;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    font-family: Georgia, serif;
}

.testimonial-text {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 28px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.avatar-1 { background: linear-gradient(135deg, #6366f1, #818cf8); }
.avatar-2 { background: linear-gradient(135deg, #a855f7, #c084fc); }
.avatar-3 { background: linear-gradient(135deg, #ec4899, #f472b6); }

.author-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
}

.author-role {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ===== CTA ===== */
.cta-section {
    padding: 60px 0 100px;
}

.cta-box {
    position: relative;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: var(--radius-xl);
    padding: 80px 40px;
    text-align: center;
    overflow: hidden;
}

.cta-bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.cta-orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #6366f1, transparent);
    top: -150px;
    left: -50px;
    opacity: 0.4;
}

.cta-orb-2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #a855f7, transparent);
    bottom: -150px;
    right: -50px;
    opacity: 0.3;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.3;
}

.cta-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 36px;
}

/* ===== 联系我们 ===== */
.contact {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

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

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.contact-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
}

.contact-form {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.required {
    color: var(--color-pink);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text);
    transition: var(--transition);
    background: #fff;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-success {
    display: none;
    margin-top: 16px;
    padding: 14px 20px;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-success.show {
    display: block;
    animation: fadeInUp 0.4s ease;
}

/* ===== Footer ===== */
.footer {
    background: #0a0a1a;
    padding: 80px 0 0;
    color: rgba(255, 255, 255, 0.6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand .nav-logo {
    margin-bottom: 20px;
}

.footer-brand .logo-text {
    color: #fff;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 320px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-newsletter-desc {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.footer-newsletter {
    display: flex;
    gap: 8px;
}

.newsletter-input {
    flex: 1;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
}

.newsletter-btn {
    padding: 12px 16px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.newsletter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer-bottom-links a:hover {
    color: #fff;
}

.footer-divider {
    color: rgba(255, 255, 255, 0.2);
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

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

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 80px;
    }

    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }

    .hero-title {
        font-size: 3rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-image {
        max-width: 450px;
        margin: 0 auto;
    }

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

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

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

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

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

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .nav-link:hover,
    .nav-link.active {
        background: var(--color-bg-alt);
    }

    .nav-link::after {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-actions .btn-sm {
        display: none;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2.4rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .hero-card-float-1 {
        right: 0;
        top: -15px;
    }

    .hero-card-float-2 {
        left: 0;
        bottom: -15px;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .section-header {
        margin-bottom: 40px;
    }

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

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

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

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .cta-box {
        padding: 50px 24px;
    }

    .cta-title {
        font-size: 1.7rem;
    }

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

    .footer-brand {
        grid-column: 1 / -1;
    }

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

    .back-to-top {
        width: 44px;
        height: 44px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-badge {
        font-size: 0.75rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .trust-logos {
        gap: 24px;
    }

    .trust-logo {
        font-size: 1.1rem;
    }

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

    .contact-form {
        padding: 24px;
    }
}