/* ========== CSS Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1677FF;
    --primary-dark: #0958D9;
    --primary-light: #E6F4FF;
    --primary-lighter: #F0F7FF;
    --success: #52C41A;
    --warning: #FA8C16;
    --danger: #FF4D4F;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-light: #9CA3AF;
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --bg-lighter: #F3F4F6;
    --border: #E5E7EB;
    --border-light: #F3F4F6;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

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

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

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

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(22, 119, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(22, 119, 255, 0.4);
    transform: translateY(-1px);
}

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

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

.btn-lg {
    padding: 14px 36px;
    font-size: 17px;
}

/* ========== Header / Navigation ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), #4096FF);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

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

.nav-link {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

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

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

.header-phone {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(180deg, var(--primary-lighter) 0%, var(--bg-white) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(22, 119, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(82, 196, 26, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

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

.hero-content h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-content h1 .highlight {
    background: linear-gradient(135deg, var(--primary), #4096FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stat-item {
    text-align: left;
}

.hero-stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.hero-visual {
    position: relative;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-image-wrapper img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.hero-float-card {
    position: absolute;
    background: #fff;
    border-radius: var(--radius-md);
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
}

.hero-float-card.card-1 {
    top: 30px;
    left: -30px;
    animation-delay: 0s;
}

.hero-float-card.card-2 {
    bottom: 40px;
    right: -20px;
    animation-delay: 1.5s;
}

.float-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.float-card-icon.blue { background: var(--primary-light); color: var(--primary); }
.float-card-icon.green { background: #F6FFED; color: var(--success); }

.float-card-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.float-card-sub {
    font-size: 12px;
    color: var(--text-tertiary);
}

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

/* ========== Stats Section ========== */
.stats-section {
    padding: 60px 0;
    background: var(--bg-white);
}

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

.stat-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    transition: var(--transition);
}

.stat-card:hover {
    background: var(--primary-lighter);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 8px;
}

.stat-number .suffix {
    font-size: 24px;
    font-weight: 600;
}

.stat-label {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========== B2B Services Section ========== */
.b2b-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.b2b-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.b2b-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.b2b-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.b2b-card-topbar {
    height: 6px;
    width: 100%;
}

.b2b-card-topbar.blue { background: linear-gradient(90deg, var(--primary), #4096FF); }
.b2b-card-topbar.green { background: linear-gradient(90deg, var(--success), #73D13D); }
.b2b-card-topbar.orange { background: linear-gradient(90deg, var(--warning), #FFA940); }

.b2b-card-body {
    padding: 32px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.b2b-card-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    width: fit-content;
}

.b2b-card-badge.blue { background: var(--primary-light); color: var(--primary); }
.b2b-card-badge.green { background: #F6FFED; color: var(--success); }
.b2b-card-badge.orange { background: #FFF7E6; color: var(--warning); }

.b2b-card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.b2b-card-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.b2b-features {
    flex: 1;
    margin-bottom: 24px;
}

.b2b-feature-item {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.b2b-feature-item:last-child {
    margin-bottom: 0;
}

.b2b-feature-check {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    font-size: 12px;
    color: #fff;
}

.b2b-feature-check.blue { background: var(--primary); }
.b2b-feature-check.green { background: var(--success); }
.b2b-feature-check.orange { background: var(--warning); }

.b2b-feature-title {
    font-weight: 600;
    color: var(--text-primary);
}

.b2b-delivery {
    padding: 16px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    line-height: 1.6;
    margin-top: auto;
}

.b2b-delivery.blue { background: var(--primary-lighter); border-left: 3px solid var(--primary); }
.b2b-delivery.green { background: #F6FFED; border-left: 3px solid var(--success); }
.b2b-delivery.orange { background: #FFF7E6; border-left: 3px solid var(--warning); }

.b2b-delivery-label {
    font-weight: 700;
    margin-bottom: 4px;
}

.b2b-delivery.blue .b2b-delivery-label { color: var(--primary); }
.b2b-delivery.green .b2b-delivery-label { color: var(--success); }
.b2b-delivery.orange .b2b-delivery-label { color: var(--warning); }

/* ========== Services Section ========== */
.services-section {
    padding: 80px 0;
    background: var(--bg-white);
}

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

.service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary);
    transform: scale(1.1);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon svg {
    stroke: #fff;
}

.service-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.service-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

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

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border);
}

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

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-tertiary);
}

.modal-close:hover {
    background: var(--bg-lighter);
    color: var(--text-primary);
}

.modal-body {
    padding: 28px;
}

.modal-section {
    margin-bottom: 24px;
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-section-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

.modal-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-list-item {
    display: flex;
    gap: 10px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-list-item svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--success);
    margin-top: 3px;
}

.modal-footer {
    padding: 20px 28px;
    border-top: 1px solid var(--border);
    text-align: center;
}

/* ========== Advantages Section ========== */
.advantages-section {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.advantages-content h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.advantages-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.advantage-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.advantage-text h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.advantage-text p {
    font-size: 14px;
    color: var(--text-tertiary);
    line-height: 1.6;
    margin: 0;
}

.advantages-visual {
    position: relative;
}

.advantages-image {
    width: 100%;
    height: 480px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.advantages-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========== Cases Section ========== */
.cases-section {
    padding: 80px 0;
    background: var(--bg-white);
}

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

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.case-image {
    width: 100%;
    height: 220px;
    position: relative;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-category {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
}

.case-body {
    padding: 24px;
}

.case-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.case-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.case-results {
    display: flex;
    gap: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.case-result-item {
    text-align: center;
}

.case-result-number {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.case-result-label {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* ========== Process Section ========== */
.process-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), #4096FF, var(--primary));
    z-index: 0;
}

.process-item {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0 12px;
}

.process-step {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    position: relative;
    transition: var(--transition);
}

.process-step::after {
    content: '';
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    opacity: 0;
    animation: pulse 2s ease-in-out infinite;
}

.process-item:nth-child(1) .process-step::after { animation-delay: 0s; }
.process-item:nth-child(2) .process-step::after { animation-delay: 0.3s; }
.process-item:nth-child(3) .process-step::after { animation-delay: 0.6s; }
.process-item:nth-child(4) .process-step::after { animation-delay: 0.9s; }
.process-item:nth-child(5) .process-step::after { animation-delay: 1.2s; }
.process-item:nth-child(6) .process-step::after { animation-delay: 1.5s; }

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.3); opacity: 0; }
}

.process-item:hover .process-step {
    background: var(--primary);
    color: #fff;
    transform: scale(1.1);
}

.process-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.process-desc {
    font-size: 13px;
    color: var(--text-tertiary);
    line-height: 1.5;
}

/* ========== Contact Section ========== */
.contact-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.contact-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-method-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-method-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.contact-method-label {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.contact-method-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form-wrapper {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-form-subtitle {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    color: var(--text-primary);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.1);
}

.form-input.error,
.form-textarea.error {
    border-color: var(--danger);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    font-size: 12px;
    color: var(--danger);
    margin-top: 6px;
    display: none;
}

.form-error.show {
    display: block;
}

.form-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
}

.form-success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.form-success.show {
    display: block;
}

.form-success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #F6FFED;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.form-success-icon svg {
    width: 32px;
    height: 32px;
    color: var(--success);
}

.form-success h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-success p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== Footer ========== */
.footer {
    background: #1F2937;
    color: #D1D5DB;
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: #9CA3AF;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

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

.footer-link {
    font-size: 14px;
    color: #9CA3AF;
    transition: var(--transition);
}

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

.footer-contact-item {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
    color: #9CA3AF;
    line-height: 1.6;
}

.footer-contact-item svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-top: 3px;
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: #6B7280;
}

.footer-bottom a {
    color: #9CA3AF;
}

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

/* ========== Scroll Animation ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-visual {
        max-width: 560px;
        margin: 0 auto;
    }
    
    .b2b-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .contact-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .process-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px 0;
    }
    
    .process-grid::before {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 56px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border);
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-link {
        padding: 12px 16px;
        width: 100%;
    }
    
    .header-phone {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .hero-float-card.card-1 {
        left: 10px;
    }
    
    .hero-float-card.card-2 {
        right: 10px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .b2b-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 28px 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .hero-image-wrapper img {
        height: 300px;
    }
    
    .advantages-image {
        height: 320px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .process-grid {
        grid-template-columns: 1fr;
    }
}