:root {
    color-scheme: light;
    --ink: #273331;
    --muted: #64716d;
    --line: #dde8e1;
    --surface: #ffffff;
    --soft: #f7faf6;
    --brand: #4d796e;
    --brand-dark: #28584f;
    --accent: #d98772;
    --warm: #fff1e8;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --shadow: 0 18px 44px rgba(40, 88, 79, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 10% 0%, rgba(217, 135, 114, 0.18), transparent 28rem),
        radial-gradient(circle at 100% 12%, rgba(77, 121, 110, 0.15), transparent 26rem),
        var(--soft);
    font-family: "Nunito Sans", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
}

.article-page {
    padding-top: 34px;
    padding-bottom: 54px;
}

.article-card {
    max-width: 860px;
    margin: 0 auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.article-card h1 {
    margin: 0 0 14px;
    font-size: clamp(2rem, 4vw, 3.35rem);
    line-height: 1.08;
}

.article-card h2 {
    margin: 34px 0 12px;
    font-size: clamp(1.45rem, 2.5vw, 2rem);
    line-height: 1.16;
}

.article-card h3 {
    margin: 24px 0 8px;
    font-size: 1.16rem;
    line-height: 1.25;
}

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

.article-card blockquote {
    margin: 20px 0;
    padding: 16px 18px;
    color: var(--ink);
    background: var(--warm);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-sm);
}

.article-meta {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.article-dates {
    margin-top: 14px;
}

.article-sources {
    margin-top: 28px;
    padding-top: 18px;
    color: var(--muted);
    border-top: 1px solid var(--line);
    font-size: 0.92rem;
}

.author-box {
    margin-top: 30px;
    padding-top: 24px;
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    border-top: 1px solid var(--line);
}

.author-box img {
    width: 92px;
    height: 92px;
    border-radius: 50%;
    object-fit: cover;
}

.author-box h2 {
    margin-top: 0;
}

.author-box p {
    margin: 0 0 10px;
}

.author-basis {
    color: var(--muted);
    font-size: 0.92rem;
}

.author-social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.social-btn {
    min-height: 40px;
    padding: 8px 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-weight: 850;
    text-decoration: none;
}

.social-icon {
    flex: 0 0 auto;
}

.table-scroll {
    margin: 20px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-scroll table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    background: white;
}

.table-scroll th,
.table-scroll td {
    padding: 10px 12px;
    border: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.table-scroll th {
    color: var(--brand-dark);
    background: #eef6f2;
    font-weight: 950;
}

a {
    color: var(--brand-dark);
    text-underline-offset: 0.18em;
}

.topbar {
    color: white;
    background: var(--brand-dark);
    box-shadow: 0 8px 24px rgba(36, 44, 41, 0.08);
}

.nav {
    max-width: 1160px;
    min-height: 72px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    color: white;
    font-size: 1.22rem;
    font-weight: 950;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.86);
    font-weight: 800;
    text-decoration: none;
}

.wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

.homepage-section {
    padding-top: 20px;
    padding-bottom: 34px;
}

.section-heading-row {
    margin-bottom: 16px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
}

.section-heading-row h2 {
    margin: 0;
    font-size: clamp(1.55rem, 3vw, 2.35rem);
    line-height: 1.15;
}

.text-link {
    flex: 0 0 auto;
    font-weight: 900;
}

.hero {
    padding: 54px 0 18px;
}

.hero-inner {
    display: grid;
    gap: 18px;
}

.hero-copy {
    max-width: 780px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--brand-dark);
    font-size: 0.82rem;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    overflow-wrap: break-word;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(2.25rem, 5vw, 4.8rem);
    line-height: 1.02;
}

.hero p:not(.eyebrow) {
    margin: 0;
    color: var(--muted);
    font-size: 1.14rem;
    max-width: 680px;
}

.viewer-section {
    padding-top: 26px;
    padding-bottom: 38px;
}

.app-tabs {
    padding-top: 24px;
}

.tab-list {
    width: fit-content;
    padding: 5px;
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 24px rgba(40, 88, 79, 0.08);
}

.tab-button,
.primary-button {
    min-height: 44px;
    border: 0;
    border-radius: 9px;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}

.tab-button {
    padding: 9px 15px;
    color: var(--brand-dark);
    background: transparent;
}

.tab-button.is-active {
    color: white;
    background: var(--brand-dark);
}

.tab-panel[hidden] {
    display: none;
}

.viewer-toolbar {
    margin-bottom: 16px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
}

.viewer-toolbar h2 {
    margin: 0;
    font-size: clamp(1.55rem, 3vw, 2.35rem);
    line-height: 1.15;
}

.viewer-controls {
    min-width: min(520px, 100%);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.select-label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.measurement-panel {
    margin: 0 0 16px;
    padding: 14px 16px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
}

.measurement-item {
    display: grid;
    gap: 2px;
}

.measurement-item:last-child {
    text-align: right;
}

.measurement-label,
.measurement-divider {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 850;
}

.measurement-item strong {
    font-size: 1.05rem;
    line-height: 1.25;
}

.measurement-divider {
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

select {
    width: 100%;
    min-height: 48px;
    padding: 10px 42px 10px 13px;
    color: var(--ink);
    background: white;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 18px rgba(40, 88, 79, 0.07);
    font: inherit;
    font-weight: 850;
}

input[type="date"] {
    width: 100%;
    min-height: 48px;
    padding: 10px 13px;
    color: var(--ink);
    background: white;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 18px rgba(40, 88, 79, 0.07);
    font: inherit;
    font-weight: 850;
}

.ssw-section {
    padding-top: 26px;
    padding-bottom: 38px;
}

.ssw-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
    gap: 18px;
    align-items: stretch;
}

.ssw-card,
.ssw-result-card {
    padding: 24px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.ssw-card {
    display: grid;
    gap: 18px;
}

.ssw-card h2 {
    margin: 0;
    font-size: clamp(1.55rem, 3vw, 2.35rem);
    line-height: 1.15;
}

.ssw-methods {
    min-width: 0;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    border: 0;
}

.ssw-methods legend {
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.ssw-methods label {
    min-height: 48px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 9px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-weight: 850;
}

.ssw-methods input {
    accent-color: var(--brand-dark);
}

.ssw-input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.input-label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.primary-button {
    width: fit-content;
    padding: 10px 18px;
    color: white;
    background: var(--brand-dark);
    box-shadow: 0 12px 24px rgba(40, 88, 79, 0.16);
}

.form-note {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.source-note {
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.source-note h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.source-note p {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 0.92rem;
}

.source-note ul {
    margin: 0;
    padding-left: 1.15rem;
}

.source-note li {
    margin: 5px 0;
}

.ssw-result-card {
    display: grid;
    gap: 18px;
}

.ssw-result {
    padding: 18px;
    display: grid;
    gap: 5px;
    background: var(--warm);
    border: 1px solid rgba(217, 135, 114, 0.28);
    border-radius: var(--radius-sm);
}

.ssw-result-main {
    font-size: clamp(1.6rem, 3vw, 2.45rem);
    font-weight: 950;
    line-height: 1.08;
}

.ssw-result-detail {
    color: var(--muted);
    font-weight: 850;
}

.ssw-facts {
    margin: 0;
    display: grid;
    gap: 10px;
}

.ssw-facts div {
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    gap: 14px;
    border-bottom: 1px solid var(--line);
}

.ssw-facts div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.ssw-facts dt {
    color: var(--muted);
    font-weight: 850;
}

.ssw-facts dd {
    margin: 0;
    text-align: right;
    font-weight: 950;
}

.viewer-shell {
    padding: 10px;
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.viewer-embed {
    position: relative;
    height: min(68vh, 680px);
    min-height: 480px;
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff, #edf6f1);
    border-radius: calc(var(--radius-lg) - 8px);
}

.viewer-embed canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.viewer-status,
.viewer-hint {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(39, 51, 49, 0.82);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(221, 232, 225, 0.9);
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(40, 88, 79, 0.1);
    backdrop-filter: blur(8px);
    pointer-events: none;
}

.viewer-status {
    top: 50%;
    padding: 10px 14px;
    transform: translate(-50%, -50%);
    font-weight: 900;
}

.viewer-hint {
    bottom: 14px;
    padding: 7px 11px;
    font-size: 0.84rem;
    font-weight: 800;
}

.info-grid {
    padding-top: 8px;
    padding-bottom: 52px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.info-box,
.legal-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.info-box {
    padding: 22px;
}

.info-box h2 {
    margin: 0 0 8px;
    font-size: 1.18rem;
}

.info-box h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
    line-height: 1.25;
}

.info-box p {
    margin: 0;
    color: var(--muted);
}

.legal-page {
    max-width: 860px;
    padding-top: 36px;
    padding-bottom: 52px;
}

.legal-card {
    padding: 30px;
}

.legal-card h1 {
    margin: 0 0 16px;
    font-size: clamp(1.8rem, 3.6vw, 3rem);
    line-height: 1.08;
}

.legal-card h2 {
    margin: 30px 0 10px;
    font-size: 1.35rem;
}

footer {
    color: rgba(255, 255, 255, 0.78);
    background: var(--brand-dark);
}

.footer-inner {
    padding-top: 26px;
    padding-bottom: 26px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

footer a {
    color: white;
}

:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

@media (max-width: 760px) {
    .viewer-toolbar,
    .nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .viewer-controls,
    .measurement-panel,
    .ssw-layout,
    .ssw-methods,
    .ssw-input-grid {
        width: 100%;
        grid-template-columns: minmax(0, 1fr);
    }

    .measurement-item:last-child {
        text-align: left;
    }

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

    .section-heading-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .author-box {
        grid-template-columns: minmax(0, 1fr);
    }

    .viewer-embed {
        height: 58vh;
        min-height: 360px;
    }

    .tab-list {
        width: 100%;
    }

    .tab-button {
        flex: 1;
    }
}

@media (max-width: 560px) {
    .wrap,
    .nav {
        padding-left: 18px;
        padding-right: 18px;
    }

    .hero {
        padding-top: 38px;
    }

    .viewer-shell {
        padding: 7px;
    }

    .viewer-hint {
        width: calc(100% - 28px);
        text-align: center;
    }

    .legal-card,
    .article-card,
    .info-box,
    .ssw-card,
    .ssw-result-card {
        padding: 21px;
    }
}