:root {
    color-scheme: light;
    --bg: #eef3f7;
    --panel: #ffffff;
    --ink: #16202e;
    --muted: #607084;
    --line: #d3dde8;
    --accent: #067a9f;
    --accent-soft: #e5f7fb;
    --danger: #b42318;
    --shadow: 0 16px 42px rgba(26, 40, 56, .11);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    overflow-x: hidden;
}

body {
    background:
        linear-gradient(90deg, rgba(10, 70, 92, .07) 1px, transparent 1px),
        linear-gradient(180deg, rgba(10, 70, 92, .06) 1px, transparent 1px),
        radial-gradient(circle at 20% 0%, #ffffff 0, #eef3f7 42%, #e8eef4 100%);
    background-size: 36px 36px, 36px 36px, auto;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    -webkit-text-size-adjust: 100%;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

.noscript {
    background: #fff3cd;
    color: #663c00;
    padding: 12px;
    text-align: center;
}

.site-shell {
    margin: 0 auto;
    max-width: 1120px;
    padding: clamp(18px, 4vw, 48px);
}

.hero {
    max-width: 760px;
    padding: 28px 0 22px;
}

.series-label,
.ad-label,
.section-kicker {
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .16em;
    margin: 0 0 8px;
}

h1 {
    font-size: clamp(40px, 9vw, 86px);
    letter-spacing: 0;
    line-height: .95;
    margin: 0;
}

.subtitle {
    color: var(--muted);
    font-size: clamp(18px, 3vw, 24px);
    font-weight: 700;
    margin: 12px 0 0;
}

.lead {
    font-size: clamp(18px, 3vw, 25px);
    font-weight: 700;
    line-height: 1.5;
    margin: 26px 0 0;
}

.note {
    color: var(--muted);
    margin: 14px 0 0;
}

.mode-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 24px 0 28px;
}

.mode-card {
    appearance: none;
    background: rgba(255, 255, 255, .86);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
    color: var(--ink);
    cursor: pointer;
    display: grid;
    gap: 8px;
    min-height: 238px;
    padding: 18px;
    text-align: left;
}

.mode-card:hover,
.mode-card:focus-visible {
    border-color: var(--accent);
    outline: 0;
    transform: translateY(-1px);
}

.mode-card span {
    color: var(--accent);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .14em;
}

.mode-card strong {
    font-size: 20px;
    line-height: 1.15;
}

.mode-card small {
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
}

.mode-card em {
    color: #435165;
    font-size: 14px;
    font-style: normal;
}

.lab-policy {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 28px 0;
}

.lab-policy > div,
.main-lab-tools,
.about-diagnosis,
.app-comment-section,
.ad-row {
    background: rgba(255, 255, 255, .82);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
}

h2 {
    font-size: 18px;
    letter-spacing: 0;
    margin: 0 0 8px;
}

p {
    margin-top: 0;
}

.lab-policy p,
.main-lab-tools p,
.about-diagnosis p {
    color: var(--muted);
    margin-bottom: 0;
}

.about-diagnosis,
.app-comment-section,
.main-lab-tools {
    margin: 28px 0;
}

.ad-row {
    margin: 28px 0;
    min-height: 110px;
}

.tool-links {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.tool-links a {
    background: var(--accent-soft);
    border: 1px solid #bee8f1;
    border-radius: 8px;
    color: #07556f;
    display: grid;
    gap: 4px;
    font-weight: 700;
    padding: 12px;
    text-decoration: none;
}

.tool-links strong,
.tool-links span {
    display: block;
}

.tool-links strong {
    color: #053e52;
    font-size: 15px;
}

.tool-links span {
    color: #486274;
    font-size: 13px;
}

.pattern-view {
    background: #0d1117;
    color: #fff;
    display: grid;
    grid-template-rows: auto 1fr auto;
    inset: 0;
    min-height: 100dvh;
    position: fixed;
    z-index: 50;
}

.pattern-view[hidden] {
    display: none;
}

.pattern-toolbar,
.pattern-footer {
    align-items: center;
    background: rgba(12, 16, 22, .74);
    display: flex;
    gap: 12px;
    justify-content: space-between;
    padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 10px max(12px, env(safe-area-inset-left));
    position: relative;
    z-index: 2;
}

.pattern-footer {
    align-items: flex-start;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
}

.quiet-button,
.pattern-chip {
    appearance: none;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 7px;
    color: #fff;
    cursor: pointer;
    min-height: 38px;
    padding: 8px 12px;
}

.danger-button {
    background: rgba(180, 35, 24, .78);
    border-color: rgba(255, 255, 255, .22);
}

.pattern-title {
    min-width: 0;
    text-align: center;
}

.pattern-title span,
.pattern-title strong {
    display: block;
}

.pattern-title span {
    color: rgba(255, 255, 255, .66);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .13em;
}

.pattern-title strong {
    font-size: clamp(16px, 4vw, 24px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pattern-surface {
    min-height: 0;
    position: relative;
}

.pattern-surface::after {
    color: rgba(255, 255, 255, .22);
    content: attr(data-watermark);
    font-size: clamp(28px, 8vw, 88px);
    font-weight: 800;
    left: 50%;
    letter-spacing: .08em;
    pointer-events: none;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap;
}

.pattern-help {
    color: rgba(255, 255, 255, .78);
    flex: 1;
    font-size: 14px;
}

.pattern-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.pattern-chip.active {
    background: #fff;
    color: #111827;
}

.motion-layer {
    inset: 0;
    overflow: hidden;
    position: absolute;
}

.motion-track {
    inset: 0;
    position: absolute;
}

.motion-bar {
    background: #fff;
    box-shadow: 0 0 0 2px rgba(0, 0, 0, .45), 0 0 34px rgba(255, 255, 255, .58);
    height: 28%;
    left: 0;
    max-height: 180px;
    min-height: 72px;
    position: absolute;
    top: 22%;
    width: min(24vw, 220px);
}

.motion-text {
    color: #fff;
    font-size: clamp(26px, 8vw, 82px);
    font-weight: 900;
    left: 0;
    letter-spacing: .08em;
    position: absolute;
    text-shadow: 0 0 2px #000, 0 0 16px rgba(255, 255, 255, .32);
    top: 58%;
    white-space: nowrap;
}

@media (max-width: 860px) {
    .mode-grid,
    .tool-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .site-shell {
        padding: 18px 14px 28px;
    }

    .hero {
        padding-top: 18px;
    }

    .mode-grid,
    .lab-policy,
    .tool-links {
        grid-template-columns: 1fr;
    }

    .mode-card {
        min-height: 0;
        padding: 16px;
    }

    .pattern-toolbar {
        gap: 8px;
    }

    .quiet-button {
        padding: 8px 10px;
    }

    .pattern-footer {
        display: grid;
    }

    .pattern-controls {
        justify-content: flex-start;
    }
}