* {
    box-sizing: border-box;
}

:root {
    --page-bg: #ffffff;
    --page-soft: #f5f8ff;
    --header-bg: rgba(255, 255, 255, 0.92);
    --text: #162033;
    --muted: #5f6f88;
    --line: rgba(120, 140, 180, 0.18);
    --primary: #4b7cff;
    --primary-strong: #2d64ff;
    --shadow: 0 18px 48px rgba(28, 42, 73, 0.12);
    --radius-lg: 24px;
    --radius-md: 18px;
    --max-width: 1180px;
    --card-cyan: linear-gradient(135deg, #dff6ff, #c9edfb);
    --card-violet: linear-gradient(135deg, #ece3ff, #d9cbfb);
    --card-amber: linear-gradient(135deg, #ffefcf, #ffe0a8);
    --card-green: linear-gradient(135deg, #dcf7e9, #c8eddc);
    --card-blue: linear-gradient(135deg, #e2ecff, #d0dfff);
    --card-rose: linear-gradient(135deg, #ffe6ef, #ffcfe0);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    font-size: 14px;
    background: var(--page-bg);
    color: var(--text);
}

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

.container {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
}

.landing-page {
    background:
        radial-gradient(circle at top left, rgba(93, 145, 255, 0.12), transparent 24%),
        radial-gradient(circle at top right, rgba(100, 226, 191, 0.1), transparent 20%),
        linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(14px);
    background: var(--header-bg);
    border-bottom: 1px solid rgba(136, 154, 190, 0.14);
}

.site-header__inner {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text);
}

.brand--dark {
    color: var(--text);
}

.brand__logo {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #76adff, #66e0c4);
    color: #081220;
    font-weight: 800;
    text-transform: lowercase;
    box-shadow: 0 10px 24px rgba(84, 126, 233, 0.22);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 12px;
    color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--text);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-1px);
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #ffffff;
    box-shadow: 0 14px 28px rgba(61, 108, 244, 0.2);
}

.btn--ghost {
    background: #ffffff;
    border-color: rgba(126, 145, 182, 0.18);
    color: var(--text);
}

.btn--ghost-light {
    background: #ffffff;
}

.hero {
    padding: 56px 0 34px;
}

.hero-promo {
    margin-bottom: 24px;
}

.promo-card {
    padding: 28px 30px;
    border-radius: 30px;
    box-shadow: 0 22px 54px rgba(73, 106, 171, 0.16);
    border: 1px solid rgba(100, 132, 200, 0.14);
}

.promo-card--intro {
    background:
        radial-gradient(circle at top right, rgba(125, 167, 255, 0.26), transparent 34%),
        linear-gradient(135deg, #f7fbff, #edf4ff);
}

.promo-card__head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.promo-card__tag,
.promo-card__note,
.eyebrow,
.badge {
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
}

.promo-card__tag {
    background: rgba(74, 124, 255, 0.1);
    color: #325bd5;
}

.promo-card__note {
    background: rgba(78, 214, 177, 0.12);
    color: #1c8a69;
}

.promo-card h1 {
    margin: 0 0 12px;
    font-size: clamp(34px, 5vw, 56px);
    line-height: 1.06;
}

.promo-card p {
    margin: 0;
    max-width: 920px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
}

.hero__grid {
    display: grid;
    grid-template-columns: 1.02fr 0.98fr;
    gap: 24px;
}

.hero__copy,
.hero__panel,
.card,
.form-shell,
.success-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.hero__copy,
.hero__panel {
    padding: 26px;
}

.eyebrow {
    background: rgba(74, 124, 255, 0.1);
    color: #3b62da;
}

.hero__title {
    margin: 16px 0 12px;
    font-size: 28px;
    line-height: 1.16;
}

.hero__copy p,
.muted,
.card p,
.card li,
.card span,
.section-heading p,
.contact-list,
.hint {
    color: var(--muted);
    line-height: 1.72;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.hero__meta {
    margin-top: 22px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.stat-card,
.visual-card,
.card {
    border-radius: var(--radius-md);
    border: 1px solid rgba(123, 142, 179, 0.14);
}

.stat-card {
    padding: 18px;
}

.stat-card strong {
    display: block;
    font-size: 24px;
    color: var(--text);
    margin-bottom: 6px;
}

.hero-visual {
    display: grid;
    gap: 16px;
}

.visual-card {
    padding: 18px;
}

.visual-card h3,
.section-heading h2,
.form-shell h1,
.success-card h1 {
    margin: 0 0 10px;
}

.visual-chart {
    position: relative;
    min-height: 196px;
    overflow: hidden;
}

.bars {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: end;
    gap: 14px;
    height: 168px;
    margin-top: 18px;
}

.bar {
    position: relative;
    border-radius: 14px 14px 10px 10px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
    animation: rise 2.8s ease-in-out infinite alternate;
}

.bar--cyan {
    background: linear-gradient(180deg, #64d5ff, #47a7cf);
}

.bar--violet {
    background: linear-gradient(180deg, #be98ff, #8f66df);
}

.bar--green {
    background: linear-gradient(180deg, #83e2ba, #49b082);
}

.bar--amber {
    background: linear-gradient(180deg, #ffcf6f, #f1a539);
}

.bar--rose {
    background: linear-gradient(180deg, #ffafcc, #ee699b);
}

.bar span {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
}

.timeline {
    display: grid;
    gap: 12px;
}

.timeline__item {
    position: relative;
    padding: 14px 16px 14px 42px;
    border-radius: 16px;
    background: var(--page-soft);
    border: 1px solid rgba(129, 151, 194, 0.16);
}

.timeline__item::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #68d7a9, #5db0ff);
}

.section {
    padding: 28px 0;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 20px;
    margin-bottom: 18px;
}

.feature-grid,
.connector-grid,
.shot-grid,
.steps-grid {
    display: grid;
    gap: 18px;
}

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.connector-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.steps-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
    padding: 22px;
}

.card--cyan,
.stat-card--cyan,
.visual-card--cyan {
    background: var(--card-cyan);
}

.card--violet,
.stat-card--violet,
.visual-card--violet {
    background: var(--card-violet);
}

.card--amber,
.stat-card--amber,
.visual-card--amber {
    background: var(--card-amber);
}

.card--green,
.visual-card--green {
    background: var(--card-green);
}

.card--blue,
.visual-card--blue {
    background: var(--card-blue);
}

.card--rose {
    background: var(--card-rose);
}

.card h3,
.card h4,
.contact-list strong {
    color: var(--text);
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.chip {
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(113, 134, 177, 0.16);
    color: var(--text);
    font-size: 11px;
}

.chip--cyan {
    background: rgba(87, 196, 228, 0.14);
}

.chip--violet {
    background: rgba(174, 125, 255, 0.14);
}

.chip--amber {
    background: rgba(255, 193, 75, 0.14);
}

.demo-shot__visual {
    position: relative;
    min-height: 240px;
    border-radius: 18px;
    border: 1px solid rgba(128, 146, 180, 0.14);
    padding: 18px;
}

.demo-shot__media {
    overflow: hidden;
    border-radius: 18px;
    border: 1px solid rgba(113, 132, 172, 0.18);
    background: linear-gradient(180deg, #f3f7ff 0%, #e9f0ff 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.showcase-image {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.demo-shot__visual--blue {
    background: linear-gradient(135deg, rgba(126, 170, 255, 0.18), rgba(241, 246, 255, 0.9));
}

.demo-shot__visual--green {
    background: linear-gradient(135deg, rgba(130, 233, 192, 0.16), rgba(244, 252, 248, 0.92));
}

.browser-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.browser-bar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(85, 107, 146, 0.26);
}

.chart-lines {
    position: absolute;
    inset: 62px 20px 20px 20px;
}

.chart-lines svg {
    width: 100%;
    height: 100%;
}

.flow-demo {
    display: grid;
    gap: 14px;
}

.flow-node {
    padding: 14px;
    border-radius: 14px;
    border: 1px solid rgba(128, 146, 180, 0.14);
    animation: pulse 2.5s ease-in-out infinite;
}

.flow-node--cyan {
    background: rgba(92, 212, 255, 0.12);
}

.flow-node--violet {
    background: rgba(171, 135, 255, 0.12);
}

.flow-node--amber {
    background: rgba(255, 197, 88, 0.14);
}

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

.code-box {
    padding: 14px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(124, 144, 181, 0.14);
    color: #26446f;
    font-family: Consolas, "Courier New", monospace;
    font-size: 11px;
    line-height: 1.75;
    white-space: pre-wrap;
}

.sdk-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    background: #ffffff;
    border: 1px solid rgba(112, 132, 174, 0.16);
    color: #315fcf;
    font-size: 12px;
    font-weight: 700;
    width: fit-content;
}

.step-card__index {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.78);
    color: var(--text);
    margin-bottom: 14px;
}

.cta-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.contact-list {
    display: grid;
    gap: 8px;
    margin-top: 16px;
    font-size: 13px;
}

.site-footer {
    padding: 30px 0 46px;
    color: var(--muted);
    font-size: 12px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    border-top: 1px solid rgba(129, 151, 194, 0.14);
    padding-top: 20px;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 34px 16px;
    background: linear-gradient(180deg, #fefefe 0%, #f6f9ff 100%);
}

.auth-page--light {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.form-shell,
.success-card {
    width: min(100%, 780px);
    padding: 30px;
}

.form-shell--compact {
    width: min(100%, 480px);
}

.form-shell--light {
    background: #ffffff;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.field {
    display: grid;
    gap: 8px;
}

.field--full {
    grid-column: 1 / -1;
}

.field label {
    font-size: 12px;
    color: #33425c;
}

.field input,
.field textarea,
.field select {
    width: 100%;
    min-height: 46px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(128, 148, 188, 0.18);
    background: #ffffff;
    color: var(--text);
    outline: none;
    font-size: 13px;
}

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

.field input:focus,
.field textarea:focus,
.field select:focus {
    border-color: rgba(84, 126, 233, 0.44);
    box-shadow: 0 0 0 4px rgba(87, 128, 238, 0.12);
}

.support-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.support-option {
    position: relative;
}

.support-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.support-option span {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(128, 148, 188, 0.18);
    background: #ffffff;
    color: #41516d;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.support-option input:checked + span {
    background: linear-gradient(135deg, rgba(111, 173, 255, 0.18), rgba(105, 225, 195, 0.16));
    border-color: rgba(111, 173, 255, 0.34);
    color: #214cae;
}

.hint {
    font-size: 12px;
}

.notice {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    background: #f6f9ff;
    border: 1px solid rgba(127, 147, 188, 0.14);
    color: #4d607f;
    line-height: 1.7;
    font-size: 13px;
}

.inline-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-top: 16px;
    font-size: 13px;
    line-height: 1.6;
}

.alert--error {
    background: #fff3f3;
    border: 1px solid rgba(235, 113, 113, 0.2);
    color: #c74e4e;
}

.alert--success {
    background: #eefcf5;
    border: 1px solid rgba(104, 215, 169, 0.22);
    color: #2b8d68;
}

.success-list {
    margin: 20px 0 0;
    padding-left: 18px;
    line-height: 1.8;
    font-size: 13px;
}

.login-card__demo {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    background: #f5f8ff;
    border: 1px solid rgba(120, 140, 180, 0.14);
}

.badge {
    background: rgba(104, 215, 169, 0.12);
    border: 1px solid rgba(104, 215, 169, 0.16);
    color: #2b8d68;
}

@keyframes rise {
    from {
        transform: scaleY(0.94);
        opacity: 0.82;
    }
    to {
        transform: scaleY(1.03);
        opacity: 1;
    }
}

@keyframes pulse {
    0%,
    100% {
        transform: translateX(0);
        box-shadow: 0 0 0 rgba(109, 168, 255, 0);
    }
    50% {
        transform: translateX(3px);
        box-shadow: 0 0 0 6px rgba(109, 168, 255, 0.08);
    }
}

@media (max-width: 960px) {
    .hero__grid,
    .feature-grid,
    .connector-grid,
    .shot-grid,
    .steps-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .section-heading,
    .cta-card,
    .footer-inner,
    .site-header__inner,
    .promo-card__head {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .site-nav {
        flex-wrap: wrap;
    }
}

@media (max-width: 680px) {
    .hero {
        padding-top: 40px;
    }

    .hero__copy,
    .hero__panel,
    .card,
    .form-shell,
    .success-card,
    .promo-card {
        padding: 22px;
    }

    .bars {
        gap: 8px;
    }
}