:root {
    --bg: #f8fafc;
    --surface: rgba(255, 255, 255, 0.82);
    --surface-solid: #ffffff;
    --text: #1e293b;
    --muted: #64748b;
    --line: rgba(148, 163, 184, 0.2);
    --primary: #2ec4b6;
    --secondary: #4ea8de;
    --accent: #ff7a00;
    --shadow: 0 24px 70px rgba(30, 41, 59, 0.12);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --content-width: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Manrope', sans-serif;
    background:
        radial-gradient(circle at top left, rgba(46, 196, 182, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(78, 168, 222, 0.22), transparent 32%),
        linear-gradient(180deg, #f7fbff 0%, var(--bg) 48%, #eef6fb 100%);
    color: var(--text);
}

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

.page-shell {
    min-height: 100vh;
}

.hero,
.section,
.site-footer {
    width: min(calc(100% - 32px), var(--content-width));
    margin: 0 auto;
}

.hero {
    padding: 24px 0 32px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 16px 28px rgba(78, 168, 222, 0.24);
}

.brand-word {
    font-size: 1.15rem;
    letter-spacing: 0.01em;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    color: var(--muted);
    font-weight: 600;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: 32px;
    align-items: center;
    padding: 28px;
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.72));
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-copy h1,
.section-heading h2 {
    margin: 0;
    line-height: 1.03;
    letter-spacing: -0.04em;
}

.hero-copy h1 {
    max-width: 12ch;
    font-size: clamp(2.8rem, 5vw, 5.3rem);
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--secondary);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
}

.hero-text,
.feature-card p,
.experience-copy p,
.roadmap-card p,
.site-footer p {
    color: var(--muted);
    line-height: 1.72;
    font-size: 1rem;
}

.hero-text {
    max-width: 62ch;
    margin: 20px 0 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 28px 0 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 20px;
    border-radius: 16px;
    font-weight: 700;
    transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 18px 32px rgba(46, 196, 182, 0.24);
}

.button-accent {
    background: linear-gradient(135deg, var(--accent), #ffb14a);
    color: #ffffff;
    box-shadow: 0 18px 32px rgba(255, 122, 0, 0.24);
}

.button-secondary {
    border: 1px solid rgba(78, 168, 222, 0.22);
    background: rgba(255, 255, 255, 0.7);
}

.hero-download-note {
    margin: 14px 0 0;
    color: var(--muted);
    font-weight: 600;
}

.hero-download-note a {
    color: var(--accent);
    font-weight: 800;
}

.hero-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    padding: 0;
    margin: 28px 0 0;
    list-style: none;
}

.hero-points li {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--line);
    font-weight: 700;
    color: var(--text);
}

.hero-visual {
    display: grid;
    place-items: center;
    min-height: 100%;
}

.device-frame {
    width: min(100%, 420px);
    padding: 14px;
    border-radius: 36px;
    background: linear-gradient(180deg, rgba(22, 34, 51, 0.98), rgba(50, 65, 84, 0.94));
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.28);
}

.device-screen {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 680px;
    padding: 20px;
    border-radius: 28px;
    background:
        radial-gradient(circle at top right, rgba(46, 196, 182, 0.24), transparent 34%),
        linear-gradient(180deg, #f8fbfd 0%, #f0f7fb 100%);
}

.screen-header,
.screen-columns,
.screen-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.screen-header {
    font-size: 0.95rem;
    font-weight: 700;
}

.screen-card,
.metric-card,
.feature-card,
.roadmap-card {
    border: 1px solid var(--line);
    background: var(--surface-solid);
    box-shadow: 0 18px 34px rgba(148, 163, 184, 0.1);
}

.screen-card {
    padding: 18px;
    border-radius: 24px;
}

.screen-card-large {
    padding: 24px;
    background: linear-gradient(135deg, rgba(46, 196, 182, 0.18), rgba(78, 168, 222, 0.14));
}

.screen-card h2 {
    margin: 8px 0 10px;
    font-size: 1.7rem;
}

.screen-label {
    margin: 0;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.11em;
    font-size: 0.72rem;
    font-weight: 800;
}

.accent-card {
    background: linear-gradient(135deg, rgba(255, 122, 0, 0.18), rgba(255, 216, 184, 0.7));
}

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

.screen-list {
    display: grid;
    gap: 12px;
}

.screen-list-item {
    padding: 16px 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.screen-list-item span {
    color: var(--secondary);
    font-weight: 800;
}

.section {
    padding: 84px 0 0;
}

.section-heading {
    display: grid;
    gap: 14px;
    max-width: 720px;
}

.section-heading h2 {
    font-size: clamp(2rem, 3.4vw, 3.3rem);
}

.section-heading.narrow {
    max-width: 620px;
}

.feature-grid,
.roadmap-grid,
.experience-grid {
    display: grid;
    gap: 20px;
    margin-top: 30px;
}

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

.feature-card,
.roadmap-card,
.metric-card {
    padding: 26px;
    border-radius: 24px;
}

.feature-card h3,
.roadmap-card h3 {
    margin: 0 0 10px;
    font-size: 1.2rem;
}

.section-contrast {
    margin-top: 84px;
    padding: 40px;
    border-radius: 36px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(232, 244, 250, 0.88));
    box-shadow: var(--shadow);
}

.experience-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
}

.experience-copy {
    display: grid;
    gap: 12px;
}

.metrics-panel {
    display: grid;
    gap: 16px;
}

.metric-card {
    background: rgba(255, 255, 255, 0.76);
}

.metric-value {
    display: block;
    margin-bottom: 8px;
    font-size: 1.7rem;
    font-weight: 800;
}

.metric-label {
    color: var(--muted);
    font-weight: 600;
}

.roadmap-card span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 20px;
    border-radius: 14px;
    background: rgba(78, 168, 222, 0.14);
    color: var(--secondary);
    font-weight: 800;
}

.roadmap-card.is-active span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
}

.site-footer {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 24px;
    align-items: center;
    padding: 64px 0 32px;
}

.legal-page {
    min-height: 100vh;
}

.legal-shell {
    width: min(calc(100% - 32px), 980px);
    margin: 0 auto;
    padding: 28px 0 48px;
}

.legal-brand {
    margin-bottom: 28px;
}

.legal-card {
    padding: 36px;
    border-radius: 32px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.78));
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.legal-card h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.04;
    letter-spacing: -0.04em;
}

.legal-card h2 {
    margin: 0 0 10px;
    font-size: 1.15rem;
}

.legal-meta {
    margin: 12px 0 0;
    color: var(--muted);
    font-weight: 600;
}

.legal-grid {
    display: grid;
    gap: 20px;
    margin-top: 32px;
}

.legal-grid section {
    padding: 22px 24px;
    border-radius: 24px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.78);
}

.legal-grid p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
}

.legal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.auth-confirm-card {
    max-width: 760px;
}

.auth-confirm-panel {
    transition: border-color 160ms ease, background-color 160ms ease,
        box-shadow 160ms ease;
}

.auth-confirm-panel.is-success {
    border-color: rgba(46, 196, 182, 0.28);
    background: rgba(46, 196, 182, 0.08);
}

.auth-confirm-panel.is-error {
    border-color: rgba(255, 122, 0, 0.28);
    background: rgba(255, 122, 0, 0.08);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--muted);
    font-weight: 600;
}

.footer-note {
    justify-self: end;
}

@media (max-width: 980px) {

    .hero-grid,
    .experience-grid,
    .feature-grid,
    .roadmap-grid,
    .site-footer {
        grid-template-columns: 1fr;
    }

    .hero-copy h1 {
        max-width: none;
    }

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

    .footer-note {
        justify-self: start;
    }
}

@media (max-width: 720px) {
    .hero {
        padding-top: 18px;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 24px;
    }

    .hero-grid,
    .section-contrast,
    .legal-card {
        padding: 20px;
    }

    .device-screen {
        min-height: auto;
    }
}