/* ========================================
   LEKUIDC 外贸网站建设 - 着陆页样式
   ======================================== */

:root {
    --primary: #0e7490;
    --primary-dark: #0c4a6e;
    --primary-light: #22d3ee;
    --secondary: #0891b2;
    --accent: #d97706;
    --accent-light: #fbbf24;
    --dark: #0f172a;
    --dark-light: #1e3a5f;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #0c4a6e 0%, #0e7490 50%, #0891b2 100%);
    --gradient-2: linear-gradient(135deg, #0891b2 0%, #22d3ee 100%);
    --gradient-3: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    --gradient-gold: linear-gradient(135deg, #b45309 0%, #fbbf24 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(14, 116, 144, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 116, 144, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(14, 116, 144, 0.05);
}

.btn-accent {
    background: var(--gradient-3);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(217, 119, 6, 0.35);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(217, 119, 6, 0.45);
}

.btn-telegram {
    background: linear-gradient(135deg, #229ED9 0%, #0088cc 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(34, 158, 217, 0.45);
    border: none;
}

.btn-telegram:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(34, 158, 217, 0.55);
    color: var(--white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.92;
}

.logo:hover .logo-mark {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(14, 116, 144, 0.4);
}

.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    align-self: center;
    background: linear-gradient(145deg, #0c4a6e 0%, #0e7490 45%, #0891b2 100%);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 4px 14px rgba(12, 74, 110, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.logo-mark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.35);
}

.logo-mark::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    background: rgba(34, 211, 238, 0.25);
    border-radius: 50%;
    filter: blur(6px);
    pointer-events: none;
}

.logo-svg {
    width: 22px;
    height: 22px;
    color: #e0f2fe;
    position: relative;
    z-index: 1;
}

.logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.12rem;
    line-height: 1.2;
}

.logo-title {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--dark);
    white-space: nowrap;
}

.logo-sub {
    display: inline-flex;
    align-items: center;
    gap: 0;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--primary);
    white-space: nowrap;
    line-height: 1;
}

.logo-sub-sep {
    margin: 0 0.35rem;
    color: var(--gray-400);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-badge {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-600);
}

.lang-badge i {
    color: var(--primary);
    font-size: 0.875rem;
}

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

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 15% 50%, rgba(14, 116, 144, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 20%, rgba(8, 145, 178, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 90%, rgba(217, 119, 6, 0.06) 0%, transparent 50%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(14, 116, 144, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14, 116, 144, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 20s infinite linear;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10%, 90% { opacity: 0.3; }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

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

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(14, 116, 144, 0.1);
    border: 1px solid rgba(14, 116, 144, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
}

.badge i {
    color: var(--accent);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-gold {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    max-width: 520px;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--gray-600);
    box-shadow: var(--shadow-sm);
}

.hero-tag i {
    color: var(--primary);
    font-size: 0.75rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

/* Hero 全球贸易视觉 */
.hero-visual {
    position: relative;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-image-wrapper {
    position: relative;
    padding: 2rem;
}

.globe-mockup {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    padding: 2rem;
    min-height: 380px;
}

.globe-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.globe-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

.globe-status {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: #22c55e;
    font-weight: 500;
}

.globe-status::before {
    content: '';
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.globe-center {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
}

.globe-ring {
    position: absolute;
    border: 2px solid rgba(14, 116, 144, 0.15);
    border-radius: 50%;
    animation: spin-slow 30s linear infinite;
}

.globe-ring-1 { width: 180px; height: 180px; }
.globe-ring-2 {
    width: 140px;
    height: 140px;
    animation-direction: reverse;
    animation-duration: 20s;
}
.globe-ring-3 {
    width: 100px;
    height: 100px;
    border-color: rgba(217, 119, 6, 0.2);
}

@keyframes spin-slow {
    to { transform: rotate(360deg); }
}

.globe-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 50%;
    color: var(--white);
    font-size: 2.5rem;
    box-shadow: 0 8px 30px rgba(14, 116, 144, 0.4);
    z-index: 1;
}

.globe-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.globe-metric {
    text-align: center;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.globe-metric-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.globe-metric-label {
    font-size: 0.6875rem;
    color: var(--gray-500);
    margin-top: 0.125rem;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    animation: floatCard 3s ease-in-out infinite;
    z-index: 2;
    border: 1px solid var(--gray-100);
}

.floating-card i {
    font-size: 1rem;
    color: var(--primary);
}

.card-1 { top: 5%; right: -5%; animation-delay: 0s; }
.card-2 { top: 45%; left: -12%; animation-delay: 0.5s; }
.card-3 { bottom: 10%; right: 0; animation-delay: 1s; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-400);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--gray-400);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

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

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* 通用区块 */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.section-header--compact {
    margin-bottom: 1.75rem;
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(14, 116, 144, 0.1);
    color: var(--primary-dark);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* 服务 */
.services {
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-card.featured {
    border: 2px solid var(--primary);
}

.service-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
}

.service-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--gradient-3);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 116, 144, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.service-description {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.service-features {
    margin-bottom: 1.5rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.service-features li i {
    font-size: 0.75rem;
    color: #22c55e;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--primary);
}

.service-link:hover {
    gap: 0.75rem;
}

/* 服务 · 定制建站特点 */
.services-custom {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 1.5rem 2rem;
    margin-top: 1.25rem;
    padding: 1.25rem 1.5rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.services-custom-main {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    min-width: 0;
}

.services-custom-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: linear-gradient(145deg, #0c4a6e 0%, #0e7490 45%, #0891b2 100%);
    border-radius: var(--radius-md);
    color: #e0f2fe;
}

.services-custom-icon svg {
    width: 26px;
    height: 26px;
}

.services-custom-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.25rem;
    line-height: 1.3;
}

.services-custom-sub {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.services-custom-desc {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 520px;
}

.services-custom-points {
    display: grid;
    grid-template-columns: repeat(2, auto);
    gap: 0.45rem 1.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.services-custom-points li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8125rem;
    color: var(--gray-600);
    white-space: nowrap;
}

.services-custom-points li i {
    font-size: 0.6875rem;
    color: #22c55e;
}

.services-custom-btn {
    white-space: nowrap;
    padding: 0.65rem 1.25rem;
    font-size: 0.875rem;
}

/* 行业覆盖 */
.industries {
    background: var(--white);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.industry-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 1rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    text-align: center;
}

.industry-card:hover {
    background: var(--white);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 1.25rem;
}

.industry-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

/* 建站流程 */
.process {
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 2.5rem;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    opacity: 0.3;
    z-index: 0;
}

.process-step {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 0.5rem;
}

.process-number {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    background: var(--gradient-1);
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(14, 116, 144, 0.35);
}

.process-step h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.process-step p {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* 数据统计 */
.stats {
    background: var(--dark);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(14, 116, 144, 0.2) 0%, transparent 60%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(34, 211, 238, 0.3);
}

.stat-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 116, 144, 0.25);
    border-radius: var(--radius-lg);
}

.stat-icon i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.stat-content {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.25rem;
}

.stat-number-large {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-light);
}

.stat-label-large {
    width: 100%;
    font-size: 0.9375rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

/* 案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    align-items: stretch;
}

.case-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
}

.case-card:hover {
    border-color: rgba(14, 116, 144, 0.35);
    box-shadow: var(--shadow-md);
}

.case-image {
    position: relative;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.04);
}

.case-image-tag {
    position: absolute;
    top: 0.65rem;
    left: 0.65rem;
    padding: 0.25rem 0.55rem;
    background: rgba(12, 74, 110, 0.85);
    color: var(--white);
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.case-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem 1.125rem 1.125rem;
}

.case-category {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background: rgba(14, 116, 144, 0.1);
    color: var(--primary-dark);
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    align-self: flex-start;
}

.case-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.45rem;
    line-height: 1.35;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.6rem;
}

.case-meta span {
    font-size: 0.6875rem;
    color: var(--gray-500);
    padding: 0.15rem 0.45rem;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
}

.case-description {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.55;
    margin-bottom: 0.75rem;
    flex: 1;
}

.case-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    padding: 0.55rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-dark);
    background: rgba(14, 116, 144, 0.08);
    border: 1px solid rgba(14, 116, 144, 0.22);
    border-radius: var(--radius-sm);
    margin-top: auto;
}

.case-link:hover {
    background: var(--gradient-1);
    color: var(--white);
    border-color: transparent;
}

.cases-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(12, 74, 110, 0.06) 0%, rgba(8, 145, 178, 0.08) 100%);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
}

.cases-banner-text {
    flex: 1;
    min-width: 200px;
}

.cases-banner-text strong {
    display: block;
    font-size: 1rem;
    color: var(--dark);
    margin-bottom: 0.2rem;
}

.cases-banner-text span {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.cases-banner-actions {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.cases-banner-actions .btn {
    padding: 0.55rem 1rem;
    font-size: 0.8125rem;
}

/* 合作伙伴 */
.partners {
    background: var(--gray-50);
    padding: 3rem 0;
}

.partners-title {
    text-align: center;
    font-size: 0.9375rem;
    color: var(--gray-500);
    margin-bottom: 2rem;
}

.partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.partner-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 2rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.partner-logo span {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--gray-400);
    letter-spacing: 0.02em;
}

.partner-logo:hover {
    color: var(--primary);
}

.partner-logo:hover span {
    color: var(--primary);
}

/* 联系 */
.contact {
    background: var(--gray-50);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 1.5rem;
    align-items: stretch;
}

.contact-info,
.contact-telegram-panel {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.contact-info .section-tag,
.contact-info .section-title {
    text-align: left;
}

.contact-info-head {
    flex-shrink: 0;
}

.contact-description {
    font-size: 1.0625rem;
    color: var(--gray-600);
    margin-bottom: 0;
    line-height: 1.65;
}

.contact-highlights {
    list-style: none;
    margin: 1.25rem 0;
    flex: 1;
}

.contact-highlights li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.65rem;
    font-size: 0.9375rem;
    color: var(--gray-600);
}

.contact-highlight-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 116, 144, 0.1);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.contact-highlight-icon i {
    font-size: 1rem;
    color: var(--primary);
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: auto;
    flex-shrink: 0;
}

.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.trust-badge i {
    color: var(--accent);
}

/* Telegram 客服面板 */
.contact-telegram-panel {
    background: var(--white);
    padding: 1.5rem 1.75rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    height: 100%;
}

.contact-telegram-panel-head {
    flex-shrink: 0;
    margin-bottom: 1.25rem;
}

.contact-telegram-panel-head h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0.5rem 0 0.35rem;
}

.contact-telegram-panel-head p {
    font-size: 0.9375rem;
    color: var(--gray-500);
}

.contact-telegram-live {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}

.contact-telegram-dot {
    width: 7px;
    height: 7px;
    background: #10b981;
    border-radius: 50%;
    animation: contact-tg-pulse 1.8s ease-in-out infinite;
}

@keyframes contact-tg-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.contact-telegram-cards {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
    min-height: 0;
}

.contact-telegram-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.125rem;
    background: linear-gradient(135deg, rgba(34, 158, 217, 0.08) 0%, rgba(14, 116, 144, 0.06) 100%);
    border: 1px solid rgba(14, 116, 144, 0.2);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-telegram-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.contact-telegram-card--alt {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.1) 0%, rgba(34, 211, 238, 0.06) 100%);
    border-color: rgba(8, 145, 178, 0.3);
}

.contact-telegram-card-badge {
    position: absolute;
    top: 0.6rem;
    right: 0.75rem;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--white);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

.contact-telegram-card-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #229ED9 0%, #0088cc 100%);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(34, 158, 217, 0.35);
}

.contact-telegram-card--alt .contact-telegram-card-icon {
    background: var(--gradient-1);
    box-shadow: 0 4px 12px rgba(14, 116, 144, 0.35);
}

.contact-telegram-card-icon i {
    font-size: 1.625rem;
    color: var(--white);
}

.contact-telegram-card-body {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}

.contact-telegram-card-body strong {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--dark);
}

.contact-telegram-username {
    font-size: 1rem;
    font-weight: 600;
    color: #229ED9;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.contact-telegram-card--alt .contact-telegram-username {
    color: var(--primary);
}

.contact-telegram-card-desc {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.contact-telegram-card-action {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--white);
    background: var(--gradient-1);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-full);
    white-space: nowrap;
    flex-shrink: 0;
}

.contact-telegram-card:hover .contact-telegram-card-action {
    gap: 0.55rem;
}

.contact-telegram-foot {
    flex-shrink: 0;
    margin-top: 1rem;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--gray-400);
}

/* 页脚 */
.footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    font-size: 0.8125rem;
    line-height: 1.6;
}

.footer-brand .logo {
    margin-bottom: 0.875rem;
}

.footer-brand .logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.footer-brand .logo-svg {
    width: 20px;
    height: 20px;
}

.footer-brand .logo-title {
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--white);
}

.footer-brand .logo-sub {
    font-size: 0.6875rem;
    letter-spacing: 0.05em;
    color: #67e8f9;
}

.footer-brand .logo-sub-sep {
    color: var(--gray-500);
}

.footer-description {
    font-size: inherit;
    line-height: 1.65;
    margin: 0 0 1rem;
    max-width: 22rem;
    color: var(--gray-400);
}

.footer-meta {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-telegram {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-telegram a {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    background: rgba(34, 158, 217, 0.12);
    border: 1px solid rgba(34, 158, 217, 0.28);
    border-radius: var(--radius-sm);
    font-size: inherit;
    font-weight: 500;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: #94a3b8;
    transition: var(--transition);
}

.footer-telegram a i {
    font-family: "Font Awesome 6 Brands";
    font-size: 0.875rem;
    color: #67e8f9;
}

.footer-telegram a:hover {
    background: rgba(34, 158, 217, 0.22);
    border-color: rgba(34, 158, 217, 0.45);
    color: #e0f2fe;
}

.footer-partners {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
    margin: 0;
    font-size: inherit;
    color: var(--gray-500);
}

.footer-partners-label {
    font-weight: 500;
    color: var(--gray-500);
    flex-shrink: 0;
}

.footer-partners-label::after {
    content: '：';
}

.footer-partners-list {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem 0.875rem;
}

.footer-partners-list a {
    color: var(--gray-400);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 0.25rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* 右侧客服 / 回到顶部（Public/kf.html） */
.kf-toolbar {
    position: fixed;
    right: 20px;
    bottom: 28px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    pointer-events: none;
}

.kf-toolbar > * {
    pointer-events: auto;
}

.kf-widget {
    position: relative;
}

.kf-panel {
    position: absolute;
    right: 0;
    bottom: calc(100% + 14px);
    width: 280px;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    box-shadow: 0 16px 48px rgba(0, 0, 0, .14), 0 4px 12px rgba(0, 0, 0, .06);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px) scale(.96);
    transform-origin: bottom right;
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
    pointer-events: none;
}

.kf-widget.is-open .kf-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.kf-panel-banner {
    position: relative;
    padding: 18px 16px 16px;
    color: #fff;
    overflow: hidden;
}

.kf-panel-banner-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-1);
}

.kf-panel-banner-bg::before,
.kf-panel-banner-bg::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}

.kf-panel-banner-bg::before {
    width: 120px;
    height: 120px;
    top: -40px;
    right: -20px;
}

.kf-panel-banner-bg::after {
    width: 80px;
    height: 80px;
    bottom: -30px;
    left: 20px;
}

.kf-panel-close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 5;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, .15);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    transition: var(--transition);
    pointer-events: auto;
}

.kf-panel-close:hover {
    background: rgba(255, 255, 255, .28);
}

.kf-panel-greet {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 34px;
}

.kf-panel-avatar {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .2);
    border: 2px solid rgba(255, 255, 255, .35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.kf-panel-status {
    position: absolute;
    right: 1px;
    bottom: 1px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #34d399;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px rgba(52, 211, 153, .35);
}

.kf-panel-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.3;
}

.kf-panel-desc {
    margin: 3px 0 0;
    font-size: .75rem;
    opacity: .88;
    line-height: 1.4;
}

.kf-panel-body {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.kf-channel {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    border: 1px solid transparent;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.kf-channel:hover {
    background: #fff;
    border-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.kf-channel-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(145deg, #2aabee 0%, #229ed9 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(34, 158, 217, .3);
}

.kf-channel-text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.kf-channel-text strong {
    font-size: .875rem;
    font-weight: 600;
    color: var(--gray-900);
    line-height: 1.3;
}

.kf-channel-text small {
    font-size: .75rem;
    color: var(--gray-500);
    line-height: 1.3;
}

.kf-channel-go {
    font-size: .6875rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.kf-channel:hover .kf-channel-go {
    color: var(--primary);
    transform: translateX(3px);
}

.kf-panel-foot {
    padding: 10px 16px 14px;
    text-align: center;
    font-size: .6875rem;
    color: var(--gray-500);
    border-top: 1px solid var(--gray-200);
}

.kf-fab {
    position: relative;
    width: 52px;
    height: 52px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-1);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(99, 102, 241, .4);
    transition: transform var(--transition), box-shadow var(--transition);
}

.kf-fab:hover {
    transform: scale(1.06);
    box-shadow: 0 8px 28px rgba(99, 102, 241, .5);
}

.kf-fab-pulse {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(99, 102, 241, .45);
    animation: kf-pulse 2.4s ease-out infinite;
    pointer-events: none;
}

.kf-widget.is-open .kf-fab-pulse {
    animation: none;
    opacity: 0;
}

@keyframes kf-pulse {
    0% {
        transform: scale(1);
        opacity: .7;
    }
    70% {
        transform: scale(1.35);
        opacity: 0;
    }
    100% {
        transform: scale(1.35);
        opacity: 0;
    }
}

.kf-fab-icon {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: opacity .18s ease, transform .18s ease;
}

.kf-fab-icon--chat {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.kf-fab-icon--close {
    opacity: 0;
    transform: scale(.6) rotate(-90deg);
}

.kf-widget.is-open .kf-fab-icon--chat {
    opacity: 0;
    transform: scale(.6) rotate(90deg);
}

.kf-widget.is-open .kf-fab-icon--close {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.kf-top {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--gray-300);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-900);
    cursor: pointer;
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease, background var(--transition), box-shadow var(--transition);
    text-decoration: none;
    box-sizing: border-box;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
}

.kf-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.kf-top i {
    font-size: .875rem;
    line-height: 1;
}

.kf-top:hover {
    background: var(--gray-900);
    border-color: var(--gray-900);
    color: #fff;
    box-shadow: var(--shadow-md);
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text { order: 1; }
    .hero-visual { order: 0; }

    .hero-description,
    .hero-tags {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-tags { justify-content: center; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }

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

    .services-custom {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

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

    .services-custom-btn {
        width: 100%;
        justify-content: center;
    }

    .industries-grid { grid-template-columns: repeat(3, 1fr); }
    .process-timeline { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
    .process-timeline::before { display: none; }

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

    .cases-banner {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .cases-banner-actions { justify-content: center; }

    .contact-wrapper { grid-template-columns: 1fr; gap: 1.5rem; }
    .contact-info,
    .contact-telegram-panel { min-height: auto; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        box-shadow: var(--shadow-2xl);
        transition: var(--transition);
    }

    .nav-menu.active { right: 0; }
    .lang-badge { display: none; }
    .mobile-menu-toggle { display: flex; }

    .logo-title { font-size: 1rem; }
    .logo-sub { font-size: 0.5625rem; }
    .logo-mark { width: 38px; height: 38px; border-radius: 8px; }
    .logo-svg { width: 19px; height: 19px; }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-title { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }

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

    .services-custom-main {
        flex-direction: column;
        align-items: stretch;
    }

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

    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .process-timeline { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: 1fr; }

    .contact-info .section-tag,
    .contact-info .section-title { text-align: center; }
    .contact-description { text-align: center; }

    .contact-telegram-panel { padding: 1.25rem 1rem 1.5rem; }

    .contact-telegram-card {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        gap: 0.875rem;
        padding-top: 1.75rem;
    }

    .contact-telegram-card-action {
        grid-column: 1 / -1;
        justify-content: center;
        width: 100%;
    }

    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }

    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-buttons { flex-direction: column; }
    .hero-stats { flex-direction: column; gap: 1.5rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .stat-card { flex-direction: column; text-align: center; }
    .partners-logos { gap: 2rem; }
    .partner-logo { font-size: 1.75rem; }
}

/* 动画 */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}