\
:root {
    --bg: #f5f1e8;
    --surface: #ffffff;
    --surface-soft: #f8f7f3;
    --ink: #111827;
    --muted: #4b5563;
    --line: #d9d4c8;
    --accent: #b91c1c;
    --accent-soft: #fee2e2;
    --blue: #1d4ed8;
    --blue-soft: #dbeafe;
    --success: #166534;
    --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --radius: 24px;
    --radius-sm: 16px;
    --radius-xs: 12px;
    --space: 1.2rem;
    --max: 1120px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(29, 78, 216, 0.06), transparent 24rem),
        radial-gradient(circle at top left, rgba(185, 28, 28, 0.06), transparent 26rem),
        var(--bg);
    line-height: 1.6;
}

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

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

p,
ul,
ol {
    margin: 0 0 1rem;
}

ul.clean {
    padding-left: 1.2rem;
}

.container {
    width: min(calc(100% - 2rem), var(--max));
    margin-inline: auto;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--ink);
    color: white;
    padding: 0.85rem 1rem;
    border-radius: 0 0 var(--radius-xs) var(--radius-xs);
    z-index: 999;
}

.skip-link:focus {
    left: 1rem;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(12px);
    background: rgba(245, 241, 232, 0.88);
    border-bottom: 1px solid rgba(17, 24, 39, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 76px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    min-width: 0;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 50%;
    border: 1px solid rgba(17, 24, 39, 0.12);
    background: linear-gradient(135deg, #fff, #f4f4f2);
    font-size: 1.25rem;
    box-shadow: var(--shadow);
}

.brand-copy {
    display: grid;
    gap: 0.05rem;
}

.brand-copy strong {
    font-size: 1rem;
    letter-spacing: -0.03em;
}

.brand-copy small {
    color: var(--muted);
    font-size: 0.82rem;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.35rem;
}

.site-nav a {
    padding: 0.7rem 0.95rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--muted);
    transition: 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--ink);
    background: rgba(255, 255, 255, 0.7);
}

.hero {
    padding: 3.6rem 0 2.2rem;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.9fr);
    gap: 1.4rem;
    align-items: stretch;
}

.hero-panel,
.hero-side,
.surface,
.result-shell,
.tool-card,
.info-card,
.example-card,
.form-surface {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-panel,
.hero-side,
.surface,
.form-surface,
.result-shell {
    padding: 1.5rem;
}

.hero-panel {
    padding: 2rem;
}

.eyebrow {
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 800;
    margin-bottom: 0.8rem;
}

h1,
h2,
h3 {
    margin: 0 0 0.9rem;
    letter-spacing: -0.04em;
    line-height: 1.08;
}

h1 {
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    max-width: 14ch;
}

h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
}

h3 {
    font-size: 1.15rem;
}

.lead {
    font-size: 1.08rem;
    color: var(--muted);
    max-width: 62ch;
}

.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.3rem;
}

.button,
button,
input[type="submit"] {
    appearance: none;
    border: 0;
    cursor: pointer;
    border-radius: 999px;
    padding: 0.95rem 1.2rem;
    font: inherit;
    font-weight: 700;
    transition: transform 140ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
button:hover,
input[type="submit"]:hover {
    transform: translateY(-1px);
}

.button-primary,
button.button-primary,
input[type="submit"].button-primary {
    background: var(--ink);
    color: #fff;
    box-shadow: 0 10px 25px rgba(17, 24, 39, 0.18);
}

.button-secondary,
button.button-secondary,
input[type="submit"].button-secondary {
    background: rgba(255, 255, 255, 0.72);
    color: var(--ink);
    border: 1px solid rgba(17, 24, 39, 0.1);
}

.button-ghost {
    background: transparent;
    color: var(--ink);
    border: 1px solid rgba(17, 24, 39, 0.1);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 1.6rem;
}

.stat-card {
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: var(--radius-sm);
    padding: 1rem;
    background: var(--surface-soft);
}

.stat-card span {
    display: block;
    color: var(--muted);
    font-size: 0.84rem;
    margin-bottom: 0.3rem;
}

.stat-card strong {
    display: block;
    font-size: 1rem;
    line-height: 1.3;
}

.hero-side {
    display: grid;
    gap: 1rem;
}

.badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    background: var(--surface-soft);
    border: 1px solid rgba(17, 24, 39, 0.08);
    font-size: 0.92rem;
    font-weight: 600;
}

.quote-box {
    padding: 1.15rem;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(219, 234, 254, 0.75), rgba(254, 242, 242, 0.75));
    border: 1px solid rgba(17, 24, 39, 0.08);
}

.quote-box p {
    font-size: 1.02rem;
    line-height: 1.5;
    margin-bottom: 0.6rem;
}

.quote-box strong {
    display: block;
    font-size: 0.9rem;
}

.section {
    padding: 1.8rem 0;
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
    margin-bottom: 1.1rem;
}

.section-head .muted {
    max-width: 34ch;
}

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

.grid-2,
.grid-3,
.tool-grid,
.info-grid,
.example-grid,
.metrics-grid,
.summary-grid,
.angles-grid,
.faq-grid {
    display: grid;
    gap: 1rem;
}

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

.grid-3,
.tool-grid,
.info-grid,
.example-grid,
.metrics-grid,
.summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.info-card,
.example-card,
.tool-card {
    padding: 1.15rem;
}

.info-card h3,
.example-card h3,
.tool-card strong {
    margin-bottom: 0.45rem;
}

.tool-card {
    display: grid;
    gap: 0.35rem;
    transition: transform 160ms ease, border-color 160ms ease;
}

.tool-card:hover {
    transform: translateY(-2px);
    border-color: rgba(17, 24, 39, 0.16);
}

.tool-card strong {
    font-size: 1rem;
}

.tool-card span {
    color: var(--muted);
    font-size: 0.94rem;
}

.form-surface {
    padding: 1.4rem;
}

.form-intro {
    display: grid;
    gap: 0.65rem;
    margin-bottom: 1rem;
}

.form-grid {
    display: grid;
    gap: 1.05rem;
}

.question {
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(17, 24, 39, 0.08);
    background: var(--surface-soft);
}

.question legend,
.question .question-label {
    font-weight: 800;
    margin-bottom: 0.8rem;
    display: block;
    letter-spacing: -0.02em;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
}

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

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

.choice-label {
    display: block;
    height: 100%;
    padding: 0.95rem;
    border-radius: var(--radius-xs);
    border: 1px solid rgba(17, 24, 39, 0.1);
    background: #fff;
    color: var(--ink);
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition: 160ms ease;
}

.choice-label:hover {
    border-color: rgba(17, 24, 39, 0.18);
    transform: translateY(-1px);
}

.choice-input:checked + .choice-label {
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.98), rgba(30, 41, 59, 0.98));
    color: #fff;
    border-color: rgba(17, 24, 39, 0.95);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.16);
}

.choice-label small {
    display: block;
    color: inherit;
    opacity: 0.75;
    font-weight: 500;
    margin-top: 0.35rem;
}

.field-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

label.field {
    display: grid;
    gap: 0.45rem;
    font-weight: 700;
}

label.field span {
    font-size: 0.95rem;
}

input[type="text"],
textarea,
select {
    width: 100%;
    border-radius: 16px;
    border: 1px solid rgba(17, 24, 39, 0.14);
    background: #fff;
    color: var(--ink);
    padding: 0.95rem 1rem;
    font: inherit;
    resize: vertical;
    min-height: 3.25rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

textarea {
    min-height: 8.5rem;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem;
    margin-top: 1rem;
}

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

.result-shell {
    display: grid;
    gap: 1rem;
    margin-top: 1.2rem;
}

.result-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    flex-wrap: wrap;
}

.result-head h2,
.result-head h3 {
    margin-bottom: 0.4rem;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    padding: 0.5rem 0.8rem;
    background: var(--blue-soft);
    color: var(--blue);
    font-weight: 800;
    font-size: 0.88rem;
}

.pill.pill-red {
    background: var(--accent-soft);
    color: var(--accent);
}

.pill.pill-dark {
    background: rgba(17, 24, 39, 0.08);
    color: var(--ink);
}

.metric {
    display: grid;
    gap: 0.45rem;
}

.metric-top {
    display: flex;
    justify-content: space-between;
    gap: 0.8rem;
    font-weight: 700;
}

.metric-top span {
    color: var(--muted);
}

.metric-bar {
    height: 0.8rem;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(17, 24, 39, 0.08);
}

.metric-bar span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--ink));
}

.copy-grid,
.summary-grid,
.example-grid {
    margin-top: 0.2rem;
}

.copy-card,
.summary-card {
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(17, 24, 39, 0.08);
    background: var(--surface-soft);
    display: grid;
    gap: 0.7rem;
}

.copy-card header,
.summary-card header {
    display: flex;
    justify-content: space-between;
    gap: 0.8rem;
    align-items: center;
}

.copy-card h3,
.summary-card h3 {
    margin: 0;
    font-size: 1rem;
}

.copy-button {
    background: transparent;
    border: 1px solid rgba(17, 24, 39, 0.12);
    color: var(--ink);
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
}

.copy-button.is-copied {
    background: rgba(22, 101, 52, 0.08);
    border-color: rgba(22, 101, 52, 0.18);
    color: var(--success);
}

.copy-card p,
.copy-card pre,
.summary-card p {
    margin: 0;
    white-space: pre-wrap;
}

.result-rank {
    display: grid;
    gap: 0.65rem;
}

.rank-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.8rem;
    align-items: center;
    font-weight: 700;
}

.rank-row .rank-bar {
    height: 0.7rem;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(17, 24, 39, 0.08);
}

.rank-row .rank-bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--ink));
}

.code-line {
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    background: #0f172a;
    color: #f8fafc;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.95rem;
    overflow-x: auto;
}

.notice {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-sm);
    background: rgba(219, 234, 254, 0.65);
    border: 1px solid rgba(29, 78, 216, 0.14);
    color: #1e3a8a;
    font-weight: 600;
}

.notice.notice-warn {
    background: rgba(254, 242, 242, 0.75);
    border-color: rgba(185, 28, 28, 0.14);
    color: #991b1b;
}

.tool-strip {
    padding: 1.8rem 0 2.2rem;
}

.faq-list {
    display: grid;
    gap: 0.8rem;
}

.faq {
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.8);
    padding: 0.2rem 1rem;
}

.faq summary {
    list-style: none;
    cursor: pointer;
    font-weight: 800;
    padding: 1rem 0;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq p {
    color: var(--muted);
    padding-bottom: 1rem;
}

.site-footer {
    border-top: 1px solid rgba(17, 24, 39, 0.08);
    background: rgba(255, 255, 255, 0.55);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem 0 2.2rem;
    align-items: center;
}

.footer-inner p {
    color: var(--muted);
    margin: 0.4rem 0 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    justify-content: flex-end;
}

.footer-links a {
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(17, 24, 39, 0.08);
    color: var(--muted);
    font-weight: 600;
}

.callout {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px dashed rgba(17, 24, 39, 0.16);
    background: rgba(248, 247, 243, 0.85);
}

.callout strong {
    display: block;
    margin-bottom: 0.35rem;
}

.hero-mini {
    padding: 2.8rem 0 1.2rem;
}

.hero-mini .hero-panel {
    padding: 1.7rem 1.9rem;
}

.examples-stack {
    display: grid;
    gap: 0.9rem;
}

.two-col-text {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 1rem;
}

@media (max-width: 980px) {
    .hero-layout,
    .grid-2,
    .grid-3,
    .tool-grid,
    .info-grid,
    .example-grid,
    .metrics-grid,
    .summary-grid,
    .field-row,
    .two-col-text {
        grid-template-columns: 1fr;
    }

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

    .section-head,
    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-nav {
        display: none;
    }
}

@media (max-width: 720px) {
    .hero {
        padding-top: 2.4rem;
    }

    .hero-panel,
    .hero-side,
    .surface,
    .form-surface,
    .result-shell,
    .info-card,
    .example-card,
    .tool-card {
        padding: 1.15rem;
        border-radius: 20px;
    }

    h1 {
        max-width: 100%;
    }

    .hero-stats,
    .choice-grid,
    .choice-grid.choice-grid-3 {
        grid-template-columns: 1fr;
    }

    .button,
    button,
    input[type="submit"] {
        width: 100%;
        justify-content: center;
    }

    .result-head {
        flex-direction: column;
        align-items: flex-start;
    }
}