:root {
    --bg: #f4efe8;
    --bg-soft: #fbf7f2;
    --panel: #fffdf9;
    --panel-strong: #f1e7d8;
    --ink: #27231f;
    --muted: #655c54;
    --line: rgba(39, 35, 31, 0.12);
    --accent: #7f5a3f;
    --accent-2: #8f7f56;
    --accent-3: #53463b;
    --shadow: 0 22px 60px rgba(38, 31, 22, 0.08);
    --radius: 26px;
    --radius-sm: 18px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(143, 127, 86, 0.09), transparent 34%),
        linear-gradient(180deg, #f8f4ee 0%, var(--bg) 100%);
    color: var(--ink);
    line-height: 1.65;
}

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

.container {
    width: min(calc(100% - 2rem), var(--container));
    margin: 0 auto;
}

.hero {
    padding: 5rem 0 3rem;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr;
    gap: 2rem;
    align-items: stretch;
}

.hero__copy,
.hero__panel,
.info-card,
.feature-card,
.code-card,
.comparison-card,
.summary-box,
.final-card,
.visual-frame,
.hero__note {
    background: rgba(255, 253, 249, 0.82);
    backdrop-filter: blur(6px);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.hero__copy {
    border-radius: calc(var(--radius) + 8px);
    padding: 3rem;
}

.eyebrow,
.section-tag {
    margin: 0 0 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.76rem;
    font-weight: 700;
}

h1, h2, h3, h4 {
    font-family: "Georgia", "Times New Roman", serif;
    line-height: 1.12;
    margin: 0 0 1rem;
    color: #1d1815;
}

h1 {
    font-size: clamp(2.2rem, 4vw, 4.6rem);
    max-width: 12ch;
}

h2 {
    font-size: clamp(1.9rem, 3vw, 3rem);
}

h3 {
    font-size: 1.28rem;
}

.lead,
.section-intro {
    color: var(--muted);
    font-size: 1.08rem;
    max-width: 68ch;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.9rem 1.35rem;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn--solid {
    background: var(--accent);
    color: #fff8f0;
}

.btn--ghost {
    color: var(--accent);
    border: 1px solid rgba(127, 90, 63, 0.28);
    background: rgba(255, 250, 243, 0.6);
}

.hero__panel {
    border-radius: calc(var(--radius) + 8px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hero__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.stat-card,
.hero__note {
    border-radius: var(--radius-sm);
    padding: 1.2rem;
}

.stat-card__label {
    display: block;
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-card__value {
    font-size: 1.5rem;
}

.section {
    padding: 1rem 0 4.5rem;
}

.section--light {
    background: linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0));
}

.section--contrast {
    background: linear-gradient(180deg, rgba(127, 90, 63, 0.06), rgba(255, 255, 255, 0));
}

.section--dark {
    background: linear-gradient(180deg, #2b241f 0%, #221d19 100%);
    color: #efe7dd;
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
}

.section--dark h2,
.section--dark .section-tag,
.section--dark h3,
.section--dark figcaption,
.section--dark p,
.section--dark li {
    color: inherit;
}

.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.two-columns--tight {
    grid-template-columns: 0.95fr 1.05fr;
}

.info-card,
.feature-card,
.summary-box,
.final-card,
.comparison-card,
.visual-frame,
.code-card {
    border-radius: var(--radius);
}

.info-card {
    padding: 2rem;
}

.timeline {
    display: grid;
    gap: 1rem;
}

.timeline__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    align-items: start;
}

.timeline__index {
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
    background: var(--panel-strong);
    color: var(--accent-3);
    font-weight: 700;
    border: 1px solid rgba(83, 70, 59, 0.12);
}

.card-grid {
    display: grid;
    gap: 1.3rem;
}

.card-grid--four {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 2rem;
}

.feature-card {
    padding: 1.6rem;
}

.visual-frame {
    margin: 2rem 0 0;
    padding: 1.2rem;
}

.visual-frame--wide img {
    width: 100%;
    object-fit: contain;
}

.visual-frame img {
    width: 100%;
    border-radius: 16px;
}

.visual-frame figcaption {
    margin-top: 0.9rem;
    color: var(--muted);
    font-size: 0.96rem;
}

.visual-frame--dark {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.12);
    box-shadow: none;
}

.code-layout {
    display: grid;
    grid-template-columns: 0.78fr 1.22fr;
    gap: 2rem;
    align-items: start;
}

.stacked-code {
    display: grid;
    gap: 1.2rem;
}

.code-card {
    overflow: hidden;
}

.code-card__head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.95rem 1.2rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.94rem;
    color: var(--muted);
    background: rgba(241, 231, 216, 0.55);
}

.code-card pre {
    margin: 0;
    padding: 1.2rem;
    overflow: auto;
    background: #221f1c;
    color: #f3ede3;
    font-size: 0.93rem;
    line-height: 1.55;
}

.comparison-grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem;
}

.comparison-card {
    padding: 1.4rem;
}

.comparison-card--accent {
    background: linear-gradient(180deg, rgba(241, 231, 216, 0.95), rgba(255, 253, 249, 0.9));
}

.bullet-list {
    padding-left: 1.15rem;
    margin: 1rem 0 0;
}

.bullet-list li {
    margin-bottom: 0.65rem;
}

.bullet-list--light li {
    color: #efe7dd;
}

.summary-box {
    margin-top: 1.5rem;
    padding: 1.6rem 1.8rem;
    border-left: 6px solid var(--accent);
}

.final-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem;
}

.final-card {
    padding: 2rem;
}

.final-card--highlight {
    background: linear-gradient(180deg, rgba(127, 90, 63, 0.11), rgba(255,255,255,0.92));
}

.site-footer {
    padding: 1.2rem 0 2.5rem;
    color: var(--muted);
}

@media (max-width: 1100px) {
    .hero__inner,
    .two-columns,
    .two-columns--tight,
    .code-layout,
    .comparison-grid,
    .final-grid,
    .card-grid--four {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 780px) {
    .hero {
        padding-top: 3rem;
    }

    .hero__inner,
    .two-columns,
    .two-columns--tight,
    .code-layout,
    .comparison-grid,
    .final-grid,
    .card-grid--four,
    .hero__grid {
        grid-template-columns: 1fr;
    }

    .hero__copy {
        padding: 2rem;
    }

    h1 {
        max-width: none;
    }
}