:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #10b981;
    --danger: #ef4444;
    --muted: #94a3b8;
    --text: #0f172a;
    --radius: 16px;
    --transition: 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

a {
    color: inherit;
}

.container {
    width: min(1160px, calc(100% - 64px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(18px);
    background: rgba(248, 250, 252, 0.75);
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 0.01em;
    color: #334155;
}

.brand__logo {
    height: 42px;
    width: auto;
}

.brand svg {
    width: 42px;
    height: 42px;
}

.brand span {
    font-size: 22px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 15px;
}

.site-nav a {
    position: relative;
    padding: 6px 10px;
    border-radius: 999px;
    color: var(--text);
    transition: background var(--transition), color var(--transition);
}

.site-nav a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.primary-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 999px;
    background: var(--primary);
    color: white;
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 14px 32px rgba(37, 99, 235, 0.28);
}

.primary-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 36px rgba(37, 99, 235, 0.34);
}

.hero-main {
    padding: 96px 0 88px;
    background: linear-gradient(135deg, #1e293b, #0f172a 55%, #1d4ed8);
    color: white;
}

.hero-main .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 56px;
    align-items: center;
}

.hero-main h1 {
    font-size: clamp(38px, 5vw, 64px);
    margin: 18px 0;
    line-height: 1.05;
}

.hero-main p {
    font-size: 18px;
    line-height: 1.6;
    opacity: 0.85;
    margin-bottom: 28px;
}

.hero-main ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
}

.hero-main li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.38);
}

.hero-main li span {
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
}

.hero-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px;
}

.hero-metric {
    padding: 20px;
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.42);
    border: 1px solid rgba(148, 163, 184, 0.2);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hero-metric strong {
    font-size: 28px;
}

.section {
    padding: 88px 0;
}

.section h2 {
    font-size: 34px;
    margin: 0 0 20px;
}

.section p.lead {
    font-size: 18px;
    color: var(--muted);
    max-width: 720px;
    margin: 0 0 32px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--surface);
    border-radius: 18px;
    padding: 26px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
    display: grid;
    gap: 14px;
}

.service-card strong {
    font-size: 18px;
}

.service-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
    line-height: 1.6;
}


.case-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    align-items: stretch;
}

.case-card {
    position: relative;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.05));
    border-radius: 20px;
    padding: 28px;
    border: 1px solid rgba(37, 99, 235, 0.22);
    box-shadow: 0 24px 40px rgba(37, 99, 235, 0.12);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.case-card .primary-button {
    margin-top: auto;
}

.case-card span.tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.16);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.contact-card {
    background: var(--surface);
    border-radius: 18px;
    padding: 26px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
    display: grid;
    gap: 12px;
}

.contact-card ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
    color: var(--muted);
}

.contact-card a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.case-section {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.05), transparent 22%);
    padding: 96px 0;
}

.hero-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 600;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.28);
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.back-link:hover {
    transform: translateY(-1px);
    background: rgba(15, 23, 42, 0.4);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.28);
}

.back-link__icon {
    font-size: 18px;
}

header.hero {
    position: relative;
    overflow: hidden;
    padding: 72px 10vw 96px;
    background: linear-gradient(135deg, #1e3a8a, #2563eb 40%, #7c3aed);
    color: white;
}

header.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.25), transparent 45%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 960px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.hero-content h1 {
    font-size: clamp(32px, 5vw, 56px);
    margin: 24px 0 16px;
    line-height: 1.1;
}

.hero-content p {
    max-width: 520px;
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin: 36px 0;
}

.metric-card {
    background: rgba(15, 23, 42, 0.28);
    padding: 18px;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.metric-card span.label {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.72;
}

.metric-card strong {
    font-size: 28px;
    font-weight: 600;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    padding: 16px 28px;
    background: white;
    border: none;
    color: var(--primary);
    font-weight: 600;
    border-radius: 999px;
    gap: 10px;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.35);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 44px rgba(37, 99, 235, 0.45);
}

.case-content {
    width: 100%;
    margin: 0;
}

.main-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
    align-items: flex-start;
    padding-top: 120px;
}

nav.tab-menu {
    position: sticky;
    top: 32px;
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 30px 50px rgba(15, 23, 42, 0.08);
}

.tab {
    border: none;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    font-weight: 500;
    font-size: 16px;
    color: var(--text);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.tab span {
    font-size: 22px;
}

.tab.active,
.tab:hover {
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
    transform: translateX(4px);
}

.tabs-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
    min-width: 0;
}

.tab-content {
    display: none;
    padding: 28px 32px;
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 30px 50px rgba(15, 23, 42, 0.08);
    animation: fadeIn 0.45s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2.section-title {
    margin-top: 0;
    font-size: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
}

h3.section-subtitle {
    margin-bottom: 12px;
    font-size: 20px;
}

.section-description {
    color: var(--muted);
    margin-bottom: 24px;
    line-height: 1.6;
}

.telegram-grid {
    display: grid;
    grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.chat-card {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.chat-window {
    height: 420px;
    max-height: 420px;
    background: white;
    border-radius: 18px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.message {
    max-width: 82%;
    padding: 14px 16px;
    border-radius: 18px;
    position: relative;
    line-height: 1.45;
    animation: slideIn 0.35s ease;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message-bot {
    background: #eef2ff;
    align-self: flex-start;
}

.message-user {
    background: var(--primary);
    color: white;
    align-self: flex-end;
}

.message-success {
    background: #ecfdf5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.message-time {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    opacity: 0.65;
}

.typing-indicator {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 999px;
    background: #eef2ff;
    width: fit-content;
    animation: slideIn 0.3s ease;
}

.typing-indicator.active {
    display: inline-flex;
}

.typing-dots {
    display: inline-flex;
    gap: 4px;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: #6366f1;
    animation: blink 1s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {
    0%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-3px);
    }
}

.chat-controls {
    display: flex;
    gap: 12px;
}

.chat-controls button,
.scenario-buttons button,
.quick-replies button {
    border: none;
    background: var(--primary);
    color: white;
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.chat-controls button:hover,
.scenario-buttons button:hover,
.quick-replies button:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.2);
    background: var(--primary-dark);
}

.chat-controls input {
    flex: 1;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    padding: 12px 14px;
    font-size: 15px;
}

.scenario-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.scenario-buttons button.secondary {
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
    box-shadow: none;
}

.quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quick-replies button {
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
    box-shadow: none;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.timeline-item {
    background: rgba(15, 23, 42, 0.04);
    padding: 16px 18px;
    border-radius: 14px;
}

.timeline-item strong {
    display: block;
    margin-bottom: 6px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: #fff7ed;
    border-radius: 14px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid rgba(249, 115, 22, 0.25);
}

.stat-card:nth-child(2) {
    background: #ecfdf5;
    border-color: rgba(16, 185, 129, 0.25);
}

.stat-card:nth-child(3) {
    background: #eef2ff;
    border-color: rgba(99, 102, 241, 0.25);
}

.stat-card:nth-child(4) {
    background: #fdf2f8;
    border-color: rgba(236, 72, 153, 0.25);
}

.stat-card small {
    color: var(--muted);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    align-items: start;
}

.card {
    background: rgba(248, 250, 252, 0.7);
    border-radius: 18px;
    padding: 20px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card canvas {
    width: 100% !important;
    height: 260px !important;
    max-width: 100%;
}

.table-wrapper {
    margin-top: 24px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 540px;
}

th,
td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

tr:hover {
    background: rgba(37, 99, 235, 0.08);
    cursor: pointer;
}

.ticket-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}

.ml-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.ml-grid .card {
    height: 100%;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 6px 12px;
    background: rgba(37, 99, 235, 0.12);
    border-radius: 999px;
    font-size: 14px;
}

.mini-bar-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mini-bar-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mini-bar {
    flex: 1;
    height: 10px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.15);
    position: relative;
    overflow: hidden;
}

.mini-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    width: var(--value);
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), #38bdf8);
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.input-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.input-card label {
    font-weight: 600;
}

.input-card input {
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    padding: 12px 14px;
    font-size: 16px;
}

.roi-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.roi-card {
    background: rgba(236, 253, 245, 0.8);
    border-radius: 16px;
    padding: 18px;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.roi-card strong {
    font-size: 24px;
    display: block;
    margin-top: 8px;
}

.comparison {
    background: rgba(37, 99, 235, 0.08);
    border-radius: 16px;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.comparison-block {
    background: white;
    border-radius: 14px;
    padding: 16px;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.comparison-block h4 {
    margin: 0 0 12px;
    font-size: 16px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.tech-card {
    background: rgba(15, 23, 42, 0.05);
    padding: 18px;
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.tech-overview {
    display: grid;
    grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr);
    gap: 24px;
    margin-top: 16px;
}

.tech-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
    background: rgba(37, 99, 235, 0.08);
    padding: 26px;
    border-radius: 22px;
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.tech-flow-step {
    background: white;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 20px 36px rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.1);
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 220px;
}

.tech-flow-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-size: 24px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(14, 165, 233, 0.24));
    color: #1d4ed8;
}

.tech-flow-step h4 {
    margin: 0;
    font-size: 18px;
    color: #0f172a;
}

.tech-flow-step p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

.tech-flow-metric {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: #1d4ed8;
    background: rgba(37, 99, 235, 0.12);
    padding: 6px 12px;
    border-radius: 999px;
}

.tech-side {
    display: grid;
    gap: 18px;
}

.tech-side .tech-card {
    height: 100%;
}

.tech-side .tech-card:last-child p {
    margin-bottom: 0;
}

@media (max-width: 1200px) {
    .tech-overview {
        grid-template-columns: 1fr;
    }
}

footer {
    margin: 60px auto 40px;
    max-width: 960px;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
}

footer a {
    color: var(--primary);
    font-weight: 600;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 10;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: white;
    border-radius: 18px;
    padding: 28px;
    max-width: 480px;
    width: 100%;
    box-shadow: 0 40px 70px rgba(15, 23, 42, 0.18);
    position: relative;
    animation: fadeIn 0.4s ease;
}

.modal-close {
    border: none;
    background: transparent;
    font-size: 24px;
    position: absolute;
    top: 18px;
    right: 18px;
    cursor: pointer;
    color: var(--muted);
}

.modal h3 {
    margin-top: 0;
}

.modal-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-list li strong {
    display: inline-block;
    min-width: 140px;
}

@media (max-width: 1200px) {
    .main-layout {
        grid-template-columns: 1fr;
        padding-top: 48px;
    }

    nav.tab-menu {
        position: relative;
        flex-direction: row;
        flex-wrap: wrap;
        top: 0;
        margin-bottom: 16px;
    }

    .tab {
        flex: 1 1 calc(50% - 10px);
        justify-content: center;
    }
}

@media (max-width: 960px) {
    .telegram-grid {
        grid-template-columns: 1fr;
    }

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

    header.hero {
        padding: 64px 8vw 96px;
    }
}

@media (max-width: 720px) {
    header.hero {
        padding: 56px 24px 96px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .hero-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    nav.tab-menu {
        gap: 8px;
    }

    .tab {
        flex: 1 1 100%;
        justify-content: flex-start;
    }

    .tab-content {
        padding: 24px;
    }

    .chat-window {
        height: 360px;
    }
}

@media (max-width: 480px) {
    .hero-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .chat-controls {
        flex-direction: column;
    }

    .chat-controls button {
        width: 100%;
    }
}