:root {
    --color-ink: #17130d;
    --color-ink-soft: #4f4639;
    --color-muted: #7b705f;
    --color-paper: #f4eddf;
    --color-paper-warm: #fff8ea;
    --color-surface: rgba(255, 252, 246, 0.9);
    --color-line: #dfd2bd;
    --color-line-strong: #c7b79b;
    --color-btc: #f7931a;
    --color-btc-deep: #a95500;
    --color-blue: #1f6f8b;
    --color-green: #2f6f4e;
    --shadow-card: 0 24px 70px rgba(60, 42, 16, 0.14);
    --shadow-soft: 0 12px 30px rgba(60, 42, 16, 0.1);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --page-max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-ink);
    font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
    line-height: 1.55;
    background:
        radial-gradient(circle at 8% 10%, rgba(247, 147, 26, 0.2), transparent 28rem),
        radial-gradient(circle at 88% 24%, rgba(31, 111, 139, 0.14), transparent 24rem),
        linear-gradient(180deg, #efe4d0 0%, var(--color-paper) 38%, #f8f3ea 100%);
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    content: "";
    background-image:
        linear-gradient(rgba(23, 19, 13, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(23, 19, 13, 0.045) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 72%);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 100;
    padding: 10px 14px;
    border-radius: 999px;
    color: #201407;
    background: var(--color-btc);
    box-shadow: var(--shadow-soft);
    font-weight: 700;
    transform: translateY(-140%);
    transition: transform 160ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

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

p,
h1,
h2,
h3 {
    margin: 0;
}

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

.hero {
    position: relative;
    overflow: hidden;
    padding: 24px clamp(18px, 4vw, 48px) 96px;
    color: #fff7e7;
    background:
        radial-gradient(circle at 78% 18%, rgba(247, 147, 26, 0.3), transparent 20rem),
        linear-gradient(135deg, #17130d 0%, #2a1b0c 52%, #111b1f 100%);
}

.hero::after {
    position: absolute;
    right: -120px;
    bottom: -180px;
    width: 520px;
    height: 520px;
    border: 1px solid rgba(255, 248, 234, 0.16);
    border-radius: 50%;
    content: "";
}

.topbar,
.hero-layout,
main {
    width: min(100%, var(--page-max));
    margin: 0 auto;
}

.topbar {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand,
.topbar-links {
    display: flex;
    align-items: center;
}

.brand {
    gap: 12px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-mark {
    display: grid;
    width: 46px;
    height: 46px;
    place-items: center;
    border: 1px solid rgba(255, 248, 234, 0.28);
    border-radius: 50%;
    color: #201407;
    background: var(--color-btc);
    box-shadow: 0 0 0 8px rgba(247, 147, 26, 0.12);
    font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
    font-size: 1.45rem;
    font-weight: 600;
}

.topbar-links {
    gap: 10px;
    color: rgba(255, 248, 234, 0.78);
    font-size: 0.92rem;
}

.topbar-links a {
    padding: 9px 12px;
    border: 1px solid transparent;
    border-radius: 999px;
}

.topbar-links a:hover,
.topbar-links a.is-active {
    border-color: rgba(255, 248, 234, 0.22);
    color: #fff8ea;
    background: rgba(255, 248, 234, 0.08);
}

.hero-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
    gap: clamp(32px, 7vw, 96px);
    align-items: end;
    padding-top: clamp(76px, 12vw, 142px);
}

.eyebrow,
.section-kicker,
.panel-label,
.metric-label,
.chart-eyebrow,
.chart-source {
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.eyebrow,
.panel-label {
    color: #ffbe68;
}

.hero h1 {
    max-width: 820px;
    margin-top: 18px;
    font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
    font-size: clamp(3.25rem, 8vw, 7rem);
    font-weight: 700;
    letter-spacing: -0.065em;
    line-height: 0.92;
}

.hero-lede {
    max-width: 650px;
    margin-top: 28px;
    color: rgba(255, 248, 234, 0.78);
    font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border-radius: 999px;
    font-weight: 700;
}

.button-primary {
    color: #201407;
    background: var(--color-btc);
    box-shadow: 0 14px 34px rgba(247, 147, 26, 0.3);
}

.button-secondary {
    border: 1px solid rgba(255, 248, 234, 0.22);
    color: #fff8ea;
    background: rgba(255, 248, 234, 0.08);
}

.hero-panel {
    padding: 26px;
    border: 1px solid rgba(255, 248, 234, 0.2);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(180deg, rgba(255, 248, 234, 0.16), rgba(255, 248, 234, 0.06)),
        rgba(23, 19, 13, 0.5);
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.26);
    backdrop-filter: blur(18px);
}

.hero-panel strong {
    display: block;
    margin-top: 10px;
    color: #fff;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(2.05rem, 3.8vw, 3.65rem);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.055em;
    line-height: 0.95;
    overflow-wrap: anywhere;
}

#hero-update-label {
    display: block;
    margin-top: 10px;
    color: rgba(255, 248, 234, 0.64);
}

.signal-row {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 248, 234, 0.14);
    color: rgba(255, 248, 234, 0.66);
}

.signal-row strong {
    margin: 0;
    color: #fff8ea;
    font-family: "IBM Plex Sans", sans-serif;
    font-size: 0.95rem;
    line-height: 1.4;
    text-align: right;
}

.freshness-status {
    align-items: flex-start;
}

.freshness-status strong {
    max-width: 62%;
    font-size: 0.86rem;
    overflow-wrap: anywhere;
}

main {
    padding: 0 clamp(18px, 4vw, 48px) 64px;
}

.metrics {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: -52px;
}

.metric-card,
.scenario-panel,
.time-machine-panel,
.power-card,
.scenario-card,
.time-machine-card,
.performance-card,
.regional-card,
.note-card,
.controls-panel,
.chart-card,
.methodology {
    border: 1px solid rgba(199, 183, 155, 0.7);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(18px);
}

.metric-card {
    min-height: 160px;
    padding: 22px;
    border-radius: var(--radius-lg);
}

.metric-label,
.section-kicker,
.chart-eyebrow,
.chart-source {
    color: var(--color-btc-deep);
}

.metric-card strong,
.power-card strong,
.performance-card strong,
.regional-card strong {
    display: block;
    margin-top: 14px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.8rem, 3vw, 3rem);
    letter-spacing: -0.045em;
    line-height: 0.95;
    overflow-wrap: anywhere;
    font-variant-numeric: tabular-nums;
}

.metric-card p,
.power-card p,
.performance-card p,
.regional-card p,
.note-card p {
    margin-top: 14px;
    color: var(--color-muted);
}

.snapshot-badge {
    display: inline-flex;
    align-items: center;
    margin-right: 6px;
    padding: 3px 8px;
    border: 1px solid rgba(199, 183, 155, 0.78);
    border-radius: 999px;
    color: var(--color-muted);
    background: rgba(244, 237, 223, 0.66);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    vertical-align: 0.08em;
}

.snapshot-badge--live {
    border-color: rgba(247, 147, 26, 0.52);
    color: #201407;
    background: rgba(247, 147, 26, 0.22);
}

.scenario-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
    gap: 24px;
    align-items: end;
    margin-bottom: 16px;
    padding: 24px;
    border-radius: var(--radius-xl);
}

.scenario-panel h3 {
    margin-top: 6px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.85rem, 3.4vw, 3rem);
    letter-spacing: -0.052em;
    line-height: 0.95;
}

.scenario-panel p {
    max-width: 700px;
    margin-top: 10px;
    color: var(--color-muted);
}

.scenario-controls label {
    color: var(--color-btc-deep);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.scenario-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    padding: 10px 14px;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    background: rgba(255, 248, 234, 0.8);
}

.scenario-input-row input {
    width: 100%;
    min-width: 0;
    border: 0;
    color: var(--color-ink);
    background: transparent;
    font: inherit;
    font-size: 1.05rem;
    font-weight: 700;
    outline: 0;
}

.scenario-input-row span {
    color: var(--color-btc-deep);
    font-weight: 800;
}

.scenario-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.scenario-presets button {
    padding: 8px 11px;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    color: var(--color-muted);
    background: rgba(255, 248, 234, 0.72);
    font: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
}

.scenario-presets button:hover,
.scenario-presets button.is-active {
    border-color: rgba(247, 147, 26, 0.54);
    color: var(--color-ink);
    background: rgba(247, 147, 26, 0.22);
}

#scenario-share-label {
    margin-top: 10px;
    font-size: 0.86rem;
}

.time-machine-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
    gap: 24px;
    align-items: end;
    margin-bottom: 16px;
    padding: 24px;
    border-radius: var(--radius-xl);
}

.time-machine-panel h3 {
    margin-top: 6px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.85rem, 3.4vw, 3rem);
    letter-spacing: -0.052em;
    line-height: 0.95;
}

.time-machine-panel p {
    max-width: 700px;
    margin-top: 10px;
    color: var(--color-muted);
}

.time-machine-controls label {
    color: var(--color-btc-deep);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.time-machine-controls select {
    width: 100%;
    margin-top: 8px;
    padding: 12px 14px;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    color: var(--color-ink);
    background: rgba(255, 248, 234, 0.8);
    font: inherit;
    font-weight: 700;
}

.time-machine-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.time-machine-card {
    min-height: 196px;
    padding: 18px;
    border-radius: var(--radius-lg);
    animation: card-in 480ms both;
    animation-delay: var(--delay, 0ms);
}

.time-machine-card strong {
    display: block;
    margin-top: 10px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.55rem, 2.35vw, 2.35rem);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.045em;
    line-height: 0.98;
    overflow-wrap: anywhere;
}

.time-machine-card dl {
    display: grid;
    gap: 8px;
    margin: 14px 0 0;
}

.time-machine-card dl div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding-top: 8px;
    border-top: 1px solid rgba(199, 183, 155, 0.55);
}

.time-machine-card dt,
.time-machine-card dd {
    margin: 0;
}

.time-machine-card dt {
    color: var(--color-muted);
}

.time-machine-card dd {
    color: var(--color-ink);
    font-weight: 700;
    text-align: right;
}

.time-machine-card p {
    margin-top: 10px;
    color: var(--color-muted);
    font-size: 0.86rem;
}

.view-tabs {
    position: sticky;
    top: 12px;
    z-index: 20;
    display: flex;
    gap: 8px;
    width: max-content;
    max-width: 100%;
    margin: 22px auto 0;
    padding: 8px;
    overflow-x: auto;
    border: 1px solid rgba(199, 183, 155, 0.78);
    border-radius: 999px;
    background: rgba(255, 248, 234, 0.84);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.view-tabs a {
    flex: 0 0 auto;
    padding: 10px 16px;
    border-radius: 999px;
    color: var(--color-muted);
    font-weight: 700;
    transition:
        color 160ms ease,
        background-color 160ms ease;
}

.view-tabs a:hover,
.view-tabs a.is-active {
    color: var(--color-ink);
    background: var(--color-btc);
}

.view-tabs a:focus-visible,
.topbar-links a:focus-visible,
.brand:focus-visible,
.button:focus-visible {
    outline: 3px solid rgba(247, 147, 26, 0.46);
    outline-offset: 3px;
}

.controls-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    margin-top: 26px;
    padding: 28px;
    border-radius: var(--radius-xl);
}

.controls-panel h2,
.section-heading h2,
.methodology h2 {
    margin-top: 6px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(2rem, 4vw, 3.6rem);
    letter-spacing: -0.055em;
    line-height: 0.95;
}

.controls-panel p,
.section-heading p,
.methodology p {
    max-width: 760px;
    margin-top: 12px;
    color: var(--color-muted);
}

.switch {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 14px;
    min-width: 250px;
    padding: 14px;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    background: rgba(255, 248, 234, 0.75);
    cursor: pointer;
}

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

.switch-track {
    position: relative;
    flex: 0 0 auto;
    width: 54px;
    height: 30px;
    border-radius: 999px;
    background: #d0c0a7;
    transition: background 180ms ease;
}

.switch-track::after {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fffaf0;
    box-shadow: 0 2px 7px rgba(23, 19, 13, 0.24);
    content: "";
    transition: transform 180ms ease;
}

.switch input:checked + .switch-track {
    background: var(--color-btc);
}

.switch input:focus-visible + .switch-track {
    outline: 3px solid rgba(247, 147, 26, 0.48);
    outline-offset: 3px;
}

.switch input:checked + .switch-track::after {
    transform: translateX(24px);
}

.switch strong,
.switch small {
    display: block;
}

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

.dashboard-view {
    padding-top: 72px;
}

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

.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 0.72fr) minmax(280px, 0.45fr);
    gap: 28px;
    align-items: end;
    margin-bottom: 26px;
}

.subsection-heading {
    display: grid;
    grid-template-columns: minmax(0, 0.62fr) minmax(280px, 0.5fr);
    gap: 28px;
    align-items: end;
    margin: 44px 0 18px;
}

.subsection-heading h3 {
    margin-top: 6px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.85rem, 3.6vw, 3rem);
    letter-spacing: -0.05em;
    line-height: 0.96;
}

.subsection-heading p {
    margin: 0;
    color: var(--color-muted);
}

.section-heading p:last-child {
    margin-top: 0;
}

.charts-grid {
    display: grid;
    gap: 28px;
}

.power-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 48px;
}

.regional-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
}

.power-card {
    min-height: 180px;
    padding: 24px;
    border-radius: var(--radius-lg);
    animation: card-in 520ms both;
    animation-delay: var(--delay, 0ms);
}

.scenario-card {
    min-height: 156px;
    padding: 18px;
    border-radius: var(--radius-lg);
    animation: card-in 480ms both;
    animation-delay: var(--delay, 0ms);
}

.scenario-card strong {
    display: block;
    margin-top: 10px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.45rem, 2.2vw, 2.25rem);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.045em;
    line-height: 0.98;
    overflow-wrap: anywhere;
}

.scenario-card p {
    margin-top: 10px;
    color: var(--color-muted);
    font-size: 0.86rem;
}

.performance-card {
    min-height: 230px;
    padding: 22px;
    border-radius: var(--radius-lg);
    animation: card-in 520ms both;
    animation-delay: var(--delay, 0ms);
}

.performance-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.performance-card strong {
    margin: 0;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    text-align: right;
}

.performance-card dl {
    display: grid;
    gap: 10px;
    margin: 20px 0 0;
}

.performance-card dl div {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding-top: 10px;
    border-top: 1px solid rgba(199, 183, 155, 0.55);
}

.performance-card dt,
.performance-card dd {
    margin: 0;
}

.performance-card dt {
    color: var(--color-muted);
}

.performance-card dd {
    color: var(--color-ink);
    font-family: "IBM Plex Mono", monospace;
    font-weight: 600;
    text-align: right;
}

.performance-card p {
    font-size: 0.9rem;
}

.regional-card {
    min-height: 260px;
    padding: 20px;
    border-radius: var(--radius-lg);
    animation: card-in 520ms both;
    animation-delay: var(--delay, 0ms);
}

.regional-card__topline {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

.regional-card__topline small {
    color: var(--color-muted);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.72rem;
    font-weight: 600;
}

.regional-card strong {
    font-size: clamp(1.65rem, 2.6vw, 2.6rem);
}

.regional-card dl {
    display: grid;
    gap: 10px;
    margin: 18px 0 0;
}

.regional-card dl div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding-top: 10px;
    border-top: 1px solid rgba(199, 183, 155, 0.55);
}

.regional-card dt,
.regional-card dd {
    margin: 0;
}

.regional-card dt {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.regional-card dd {
    color: var(--color-ink);
    font-weight: 700;
    text-align: right;
}

.regional-card p {
    font-size: 0.9rem;
}

.power-card strong {
    font-size: clamp(2rem, 3.4vw, 3.4rem);
}

.analysis-card {
    margin-top: 26px;
}

.chart-card {
    overflow: hidden;
    border-radius: var(--radius-xl);
    animation: card-in 520ms both;
    animation-delay: var(--delay, 0ms);
}

.chart-card__header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(190px, auto);
    gap: 24px;
    align-items: start;
    padding: 26px 28px 18px;
    border-bottom: 1px solid rgba(199, 183, 155, 0.55);
}

.chart-card h3 {
    margin-top: 7px;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.75rem, 3vw, 2.7rem);
    letter-spacing: -0.05em;
    line-height: 0.95;
}

.chart-card__header p {
    max-width: 720px;
    margin-top: 11px;
    color: var(--color-muted);
}

.chart-stat {
    justify-self: end;
    min-width: 190px;
    padding: 16px;
    border: 1px solid rgba(199, 183, 155, 0.7);
    border-radius: var(--radius-md);
    background: rgba(244, 237, 223, 0.72);
    text-align: right;
}

.chart-stat strong,
.chart-stat span {
    display: block;
}

.chart-stat strong {
    font-size: 1.35rem;
    line-height: 1.05;
    overflow-wrap: anywhere;
    font-variant-numeric: tabular-nums;
}

.chart-stat span {
    margin-top: 7px;
    color: var(--color-muted);
    font-size: 0.86rem;
}

.chart {
    width: 100%;
    max-width: 100%;
    height: 470px;
    min-width: 0;
    overflow: hidden;
}

.js-plotly-plot {
    max-width: 100%;
    min-width: 0;
}

.no-data {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    margin: 0;
    padding: 28px;
    border: 1px dashed rgba(199, 183, 155, 0.74);
    border-radius: var(--radius-md);
    color: var(--color-muted);
    font-style: italic;
    text-align: center;
    background: rgba(255, 248, 234, 0.54);
}

.note-card {
    margin-top: 18px;
    padding: 22px 24px;
    border-radius: var(--radius-lg);
}

.note-card strong {
    display: block;
    font-size: 1.02rem;
}

.note-card p {
    max-width: 860px;
}

.methodology {
    display: grid;
    grid-template-columns: minmax(260px, 0.55fr) minmax(0, 1fr);
    gap: 28px;
    margin-top: 72px;
    padding: 32px;
    border-radius: var(--radius-xl);
}

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

.methodology article {
    padding: 20px;
    border: 1px solid rgba(199, 183, 155, 0.62);
    border-radius: var(--radius-md);
    background: rgba(255, 248, 234, 0.58);
}

.methodology h3 {
    font-size: 1.06rem;
}

footer {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    width: min(100%, var(--page-max));
    margin: 0 auto;
    padding: 28px clamp(18px, 4vw, 48px) 46px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

@keyframes card-in {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 980px) {
    .hero-layout,
    .section-heading,
    .subsection-heading,
    .scenario-panel,
    .time-machine-panel,
    .methodology {
        grid-template-columns: 1fr;
    }

    .metrics,
    .scenario-grid,
    .time-machine-grid,
    .power-grid,
    .performance-grid,
    .regional-grid,
    .methodology-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-panel {
        max-width: 520px;
    }
}

@media (max-width: 720px) {
    .hero {
        padding-bottom: 76px;
    }

    .topbar {
        align-items: flex-start;
        justify-content: flex-start;
    }

    .topbar-links {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 4px;
    }

    .hero h1 {
        font-size: clamp(3rem, 16vw, 5rem);
    }

    .metrics,
    .scenario-grid,
    .time-machine-grid,
    .power-grid,
    .performance-grid,
    .methodology-grid {
        grid-template-columns: 1fr;
    }

    .controls-panel,
    footer {
        flex-direction: column;
        align-items: stretch;
    }

    .switch {
        width: 100%;
        min-width: 0;
    }

    .chart-card__header {
        grid-template-columns: 1fr;
        padding: 22px;
    }

    .chart-stat {
        justify-self: stretch;
        text-align: left;
    }

    .chart {
        height: 390px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding-inline: 16px;
    }

    main {
        padding-inline: 16px;
    }

    .brand span:last-child {
        display: none;
    }

    .metric-card,
    .scenario-panel,
    .scenario-card,
    .time-machine-panel,
    .time-machine-card,
    .power-card,
    .performance-card,
    .regional-card,
    .note-card,
    .controls-panel,
    .methodology {
        border-radius: 20px;
    }

    .metric-card,
    .scenario-panel,
    .scenario-card,
    .time-machine-panel,
    .time-machine-card,
    .power-card,
    .performance-card,
    .regional-card,
    .note-card,
    .controls-panel,
    .methodology,
    .chart-card__header {
        padding: 18px;
    }

    .chart-card {
        border-radius: 22px;
    }

    .chart {
        height: 360px;
    }
}

@media (max-width: 820px) {
    .regional-grid {
        grid-template-columns: 1fr;
    }
}