:root {
    --bg: #f4efe4;
    --panel: rgba(255, 251, 243, 0.94);
    --panel-strong: rgba(255, 255, 255, 0.82);
    --ink: #1b2231;
    --muted: #586273;
    --line: rgba(27, 34, 49, 0.12);
    --accent: #0f766e;
    --accent-strong: #0b5d57;
    --accent-soft: rgba(15, 118, 110, 0.12);
    --signal: #c96a2f;
    --shadow: 0 20px 60px rgba(27, 34, 49, 0.12);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(201, 106, 47, 0.14), transparent 28%),
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.18), transparent 32%),
        linear-gradient(180deg, #f7f0e3 0%, var(--bg) 52%, #efe6d6 100%);
    font-family: "IBM Plex Sans KR", sans-serif;
    line-height: 1.6;
}

a {
    color: inherit;
}

[data-lang] {
    display: none;
}

html[data-active-lang="en"] [data-lang="en"] {
    display: block;
}

html[data-active-lang="ko"] [data-lang="ko"] {
    display: block;
}

.shell {
    width: min(1180px, calc(100vw - 32px));
    margin: 0 auto;
}

.page {
    padding: 24px 0 72px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 8px 0 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: "Space Grotesk", sans-serif;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), var(--signal));
    color: #fff;
    box-shadow: var(--shadow);
}

.topbar-right {
    display: grid;
    justify-items: end;
    gap: 12px;
}

.nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav a,
.button,
.mini-link,
.lang-switch button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    text-decoration: none;
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.nav a,
.mini-link {
    padding: 10px 16px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.52);
}

.nav a:hover,
.mini-link:hover,
.button:hover,
.lang-switch button:hover {
    transform: translateY(-1px);
}

.lang-switch {
    display: flex;
    gap: 8px;
}

.lang-switch button {
    padding: 9px 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.46);
    color: var(--muted);
    cursor: pointer;
    font: inherit;
}

.lang-switch button[aria-pressed="true"] {
    background: var(--ink);
    border-color: var(--ink);
    color: #fff;
}

.hero,
.section-card,
.doc-card,
.feature-card,
.guide-card {
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.hero,
.section-card {
    border-radius: 30px;
    padding: 30px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    margin: 0;
    font-family: "Space Grotesk", sans-serif;
    line-height: 1.08;
}

h1 {
    margin-top: 16px;
    font-size: clamp(40px, 7vw, 72px);
    letter-spacing: -0.04em;
}

h2 {
    font-size: clamp(28px, 4vw, 44px);
    letter-spacing: -0.03em;
}

h3 {
    font-size: 24px;
}

.lead {
    margin-top: 18px;
    font-size: 19px;
    color: var(--muted);
    max-width: 64ch;
}

.cta-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.button {
    padding: 14px 22px;
    font-weight: 700;
    border: 1px solid transparent;
}

.button-primary {
    background: var(--ink);
    color: #fff;
}

.button-secondary {
    background: transparent;
    border-color: var(--line);
}

.hero-grid,
.feature-grid,
.guide-grid,
.doc-grid {
    display: grid;
    gap: 18px;
}

.hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
    margin-top: 24px;
}

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

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

.feature-card,
.guide-card,
.doc-card {
    border-radius: 24px;
    padding: 22px;
}

.feature-card p,
.guide-card p,
.doc-card p,
.section-card p,
.hero p,
.doc-content p {
    margin: 14px 0 0;
    color: var(--muted);
}

.list {
    margin: 16px 0 0;
    padding-left: 20px;
    color: var(--muted);
}

.list li + li {
    margin-top: 8px;
}

.terminal,
.status-card,
.callout {
    border-radius: 22px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal,
.status-card {
    color: #f1f5fb;
}

.terminal {
    background: #1f2532;
}

.status-card {
    background: linear-gradient(180deg, #142a29, #13211f);
}

.callout {
    background: var(--panel-strong);
    border-color: var(--line);
}

.terminal code,
.status-card code {
    font-family: ui-monospace, Consolas, monospace;
    white-space: pre-wrap;
    display: block;
    font-size: 13px;
    line-height: 1.55;
}

.doc-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.7fr) minmax(280px, 0.3fr);
    gap: 20px;
    margin-top: 24px;
}

.doc-content {
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: var(--shadow);
    border-radius: 28px;
    padding: 28px;
}

.doc-content h2 + p,
.doc-content h3 + p {
    margin-top: 10px;
}

.doc-content h2 {
    margin-top: 26px;
    font-size: 28px;
}

.doc-content h2:first-child,
.doc-content h3:first-child {
    margin-top: 0;
}

.doc-content h3 {
    margin-top: 22px;
    font-size: 22px;
}

.doc-content ul,
.doc-content ol {
    margin: 14px 0 0;
    padding-left: 22px;
    color: var(--muted);
}

.doc-content li + li {
    margin-top: 8px;
}

.doc-content pre,
.doc-content code,
.pill {
    font-family: ui-monospace, Consolas, monospace;
}

.doc-content pre {
    margin-top: 16px;
    padding: 18px;
    overflow-x: auto;
    border-radius: 20px;
    background: #1f2532;
    color: #f1f5fb;
}

.doc-content code {
    padding: 2px 6px;
    border-radius: 8px;
    background: rgba(27, 34, 49, 0.08);
    color: var(--ink);
}

.doc-content pre code {
    padding: 0;
    background: transparent;
    color: inherit;
}

.aside-stack {
    display: grid;
    gap: 18px;
    align-content: start;
}

.pill {
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(27, 34, 49, 0.08);
    color: var(--ink);
    font-size: 13px;
}

.footer {
    padding: 28px 0 54px;
    color: var(--muted);
    font-size: 14px;
}

@media (max-width: 920px) {
    .topbar {
        flex-direction: column;
    }

    .topbar-right {
        justify-items: start;
    }

    .nav {
        justify-content: flex-start;
    }

    .hero-grid,
    .feature-grid,
    .guide-grid,
    .doc-grid,
    .doc-layout {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav a,
    .mini-link,
    .button,
    .lang-switch button {
        transition: none;
    }
}