:root {
    color-scheme: light;
    --bg: #f4f8fb;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-strong: #ffffff;
    --text: #10202b;
    --muted: #5c7383;
    --border: #d3e0e8;
    --primary: #1197a7;
    --primary-dark: #0c6f7d;
    --primary-soft: #d8e8f8;
    --warning: #ffd166;
    --shadow: 0 22px 50px rgba(16, 32, 43, 0.10);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --max-width: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Inter", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top right, rgba(17, 151, 167, 0.18), transparent 34%),
        radial-gradient(circle at top left, rgba(216, 232, 248, 0.95), transparent 28%),
        linear-gradient(180deg, #eef6fb 0%, #f7fafc 48%, #edf5fa 100%);
}

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

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(244, 248, 251, 0.82);
    border-bottom: 1px solid rgba(211, 224, 232, 0.8);
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 78px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    box-shadow: 0 14px 28px rgba(17, 151, 167, 0.18);
}

.brand-copy {
    min-width: 0;
}

.brand-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.94rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.nav a {
    padding: 10px 14px;
    color: var(--muted);
    font-weight: 600;
    border-radius: 999px;
}

.nav a:hover,
.nav a:focus-visible {
    color: var(--text);
    background: rgba(17, 151, 167, 0.08);
    outline: none;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    font-weight: 800;
    letter-spacing: -0.01em;
    transition: transform 140ms ease, box-shadow 140ms ease, background-color 140ms ease;
    cursor: pointer;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
    outline: none;
}

.button-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    box-shadow: 0 16px 34px rgba(17, 151, 167, 0.28);
}

.button-secondary {
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    border: 1px solid var(--border);
}

.button-muted {
    background: rgba(216, 232, 248, 0.66);
    color: var(--primary-dark);
}

.button-disabled,
.button[aria-disabled="true"] {
    cursor: not-allowed;
    pointer-events: none;
    background: #dfe8ee;
    color: #6f8594;
    box-shadow: none;
}

.hero {
    padding: 52px 0 30px;
}

.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 26px;
    align-items: stretch;
}

.hero-card,
.card {
    background: var(--surface);
    border: 1px solid rgba(211, 224, 232, 0.9);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(17, 151, 167, 0.10);
    color: var(--primary-dark);
    font-size: 0.92rem;
    font-weight: 700;
}

.hero h1,
.page-hero h1 {
    margin: 18px 0 14px;
    font-size: clamp(2.4rem, 5vw, 4.4rem);
    line-height: 0.95;
    letter-spacing: -0.05em;
}

.hero p,
.page-hero p {
    margin: 0;
    color: var(--muted);
    font-size: 1.08rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 24px;
}

.hero-note {
    margin-top: 16px;
    color: var(--muted);
    font-size: 0.95rem;
}

.hero-preview {
    position: relative;
    min-height: 480px;
}

.hero-preview figure,
.screenshot-card {
    margin: 0;
}

.desktop-shot,
.phone-shot,
.screenshot-card {
    background: var(--surface-strong);
    border: 1px solid rgba(211, 224, 232, 0.9);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.desktop-shot {
    border-radius: 22px;
}

.desktop-shot img {
    width: 100%;
    aspect-ratio: 1365 / 718;
    object-fit: cover;
}

.phone-shot {
    position: absolute;
    right: 16px;
    bottom: 4px;
    width: min(40%, 210px);
    border-radius: 28px;
}

.phone-shot img {
    width: 100%;
    aspect-ratio: 782 / 1600;
    object-fit: cover;
}

.desktop-shot figcaption,
.phone-shot figcaption,
.screenshot-card figcaption {
    padding: 10px 14px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.feature-grid,
.steps-grid,
.use-grid,
.download-grid,
.faq-grid,
.support-grid,
.policy-grid {
    display: grid;
    gap: 18px;
}

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

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

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

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

.section {
    padding: 20px 0 0;
}

.section-header {
    max-width: 760px;
    margin-bottom: 20px;
}

.section-header h2 {
    margin: 0 0 10px;
    font-size: clamp(1.6rem, 3vw, 2.6rem);
    line-height: 1;
    letter-spacing: -0.04em;
}

.section-header p {
    margin: 0;
    color: var(--muted);
    font-size: 1rem;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    background: rgba(17, 151, 167, 0.12);
    color: var(--primary-dark);
    font-size: 1.08rem;
    font-weight: 800;
}

.card h3,
.mini-card h3 {
    margin: 14px 0 8px;
    font-size: 1.2rem;
    letter-spacing: -0.03em;
}

.card p,
.card li {
    color: var(--muted);
}

.card ul {
    margin: 14px 0 0;
    padding-left: 18px;
}

.download-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

code {
    padding: 2px 6px;
    border-radius: 6px;
    background: rgba(16, 32, 43, 0.08);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
    gap: 18px;
    align-items: stretch;
}

.screenshot-card {
    border-radius: var(--radius-lg);
}

.screenshot-card img {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: cover;
}

.screenshot-card-phone img {
    object-position: top center;
}

.release-panel {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 22px;
    align-items: start;
    background: var(--surface);
    border: 1px solid rgba(211, 224, 232, 0.9);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow);
}

.release-notes {
    grid-template-columns: 1fr;
}

.release-note + .release-note {
    padding-top: 18px;
    border-top: 1px solid rgba(211, 224, 232, 0.9);
}

.release-panel h3 {
    margin: 16px 0 10px;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}

.release-panel p,
.release-list {
    color: var(--muted);
}

.release-list {
    margin: 0;
    padding-left: 20px;
}

.release-list li + li {
    margin-top: 10px;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(216, 232, 248, 0.7);
    color: var(--text);
    font-weight: 700;
    font-size: 0.94rem;
}

.page-hero {
    padding: 48px 0 24px;
}

.content-shell {
    display: grid;
    gap: 18px;
    padding-bottom: 36px;
}

.content-shell .card {
    padding: 26px;
}

.content-shell h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.32rem;
}

.muted {
    color: var(--muted);
}

.footer {
    padding: 30px 0 42px;
}

.footer-panel {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(211, 224, 232, 0.9);
    border-radius: 22px;
    padding: 18px 22px;
    box-shadow: 0 18px 42px rgba(16, 32, 43, 0.07);
}

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

.footer-links a {
    color: var(--muted);
    font-weight: 700;
}

.notice {
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(255, 209, 102, 0.18);
    border: 1px solid rgba(255, 209, 102, 0.5);
    color: #5b4608;
}

.list-clean {
    margin: 0;
    padding-left: 18px;
}

@media (max-width: 980px) {
    .hero-panel,
    .feature-grid,
    .steps-grid,
    .use-grid,
    .download-grid,
    .screenshot-grid,
    .release-panel,
    .faq-grid,
    .support-grid,
    .policy-grid {
        grid-template-columns: 1fr;
    }

    .site-header {
        position: static;
    }

    .hero-preview {
        min-height: auto;
    }

    .phone-shot {
        position: relative;
        right: auto;
        bottom: auto;
        width: min(68%, 250px);
        margin: -52px 18px 0 auto;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(var(--max-width), calc(100% - 20px));
    }

    .header-row {
        min-height: 72px;
        padding: 10px 0;
    }

    .brand-mark {
        width: 46px;
        height: 46px;
        border-radius: 14px;
    }

    .hero-card,
    .card {
        padding: 22px;
        border-radius: 22px;
    }

    .button {
        width: 100%;
    }

    .footer-panel {
        padding: 18px;
    }
}