:root {
    --bg: #101513;
    --bg-raised: #18211d;
    --ink: #f4f7f5;
    --muted: #c5d0ca;
    --line: rgba(232, 214, 163, 0.18);
    --gold: #e2b657;
    --gold-ink: #241a08;
    --soft: #24312b;
    --header-bg: rgba(16, 21, 19, 0.92);
    --menu-bg: #141b18;
    --footer-bg: #0b0f0d;
    --wash: rgba(226, 182, 87, 0.16);
    --max: 1080px;
    --header: 4.5rem;
    color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background:
        radial-gradient(900px 420px at 80% -10%, var(--wash), transparent 60%),
        var(--bg);
    color: var(--ink);
    font-family: "Segoe UI", "Malgun Gothic", sans-serif;
    font-size: 1.05rem;
    line-height: 1.75;
}

img { max-width: 100%; }

a { color: var(--gold); }

a:hover { color: #f3d48a; }

.skip {
    position: absolute;
    left: 1rem;
    top: -4rem;
    background: var(--gold);
    color: var(--gold-ink);
    padding: 0.5rem 0.8rem;
}

.skip:focus { top: 0.5rem; }

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

.narrow { width: min(46rem, calc(100% - 2rem)); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--header-bg);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: inherit;
    text-decoration: none;
}

.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }

.logo-name { font-weight: 700; }

.logo-domain { color: var(--muted); font-size: 0.82rem; }

.nav-desktop { display: none; }

.nav-links {
    display: flex;
    gap: 0.4rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-links a {
    color: var(--ink);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 0.75rem;
    border-radius: 999px;
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
    background: var(--soft);
    color: var(--gold);
}

.nav-mobile summary {
    list-style: none;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0 0.9rem;
}

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

.nav-mobile[open] .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    display: grid;
    padding: 0.5rem 1rem 1rem;
    background: var(--menu-bg);
    border-bottom: 1px solid var(--line);
}

.hero,
.page-hero {
    padding: 3.5rem 0 2.5rem;
}

.hero-grid,
.card-grid,
.footer-grid {
    display: grid;
    gap: 1rem;
}

.kicker,
.panel-label {
    margin: 0 0 0.5rem;
    color: var(--gold);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

h1, h2, h3 { line-height: 1.35; letter-spacing: -0.02em; }

h1 { margin: 0 0 1rem; font-size: clamp(2rem, 4vw, 3.4rem); }

h2 { margin: 0 0 0.8rem; font-size: clamp(1.5rem, 2vw, 2rem); }

h3 { margin: 0 0 0.55rem; font-size: 1.15rem; }

.lede { margin: 0; color: var(--muted); font-size: 1.12rem; }

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.7rem 1.2rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
}

.btn-primary { background: var(--gold); color: var(--gold-ink); }

.btn-primary:hover { background: #f0cb78; color: var(--gold-ink); }

.btn-secondary {
    border: 1px solid var(--line);
    color: var(--ink);
}

.btn[aria-disabled="true"] {
    background: #3a403c;
    color: #d5dbd7;
    cursor: not-allowed;
}

.hero-panel {
    align-self: end;
    background: linear-gradient(180deg, rgba(226, 182, 87, 0.14), rgba(24, 33, 29, 0.9));
    border: 1px solid var(--line);
    border-radius: 1.4rem;
    padding: 1.3rem 1.3rem 0.4rem;
}

.hero-panel ul { margin: 0; padding-left: 1.1rem; }

.hero-panel li { margin: 0.55rem 0 0.9rem; }

.section { padding: 2.6rem 0; }

.band {
    background: rgba(24, 33, 29, 0.72);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.info-card {
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 1.1rem;
    padding: 1.15rem 1.15rem 0.4rem;
}

.info-card p,
.section p { color: var(--muted); }

.related-links {
    display: grid;
    gap: 0.4rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.related-links a {
    display: flex;
    align-items: center;
    min-height: 44px;
    text-decoration: none;
}

.faq-list { display: grid; gap: 0.7rem; }

.faq-item {
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 0.9rem;
    padding: 0.2rem 1rem;
}

.faq-item summary {
    cursor: pointer;
    min-height: 48px;
    display: flex;
    align-items: center;
    font-weight: 700;
    color: var(--ink);
}

.breadcrumb ol {
    display: flex;
    gap: 0.45rem;
    margin: 0 0 1rem;
    padding: 0;
    list-style: none;
    color: var(--muted);
    font-size: 0.92rem;
}

.site-footer {
    margin-top: 1rem;
    padding: 2rem 0 1.2rem;
    background: var(--footer-bg);
    border-top: 1px solid var(--line);
}

.footer-brand { margin-top: 0; font-weight: 700; }

.footer-links {
    display: grid;
    gap: 0.15rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--ink);
    text-decoration: none;
}

.footer-base {
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
}

:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

@media (min-width: 768px) {
    .nav-desktop { display: block; }
    .nav-mobile { display: none; }
    .hero-actions { flex-direction: row; flex-wrap: wrap; }
    .card-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 0.7fr);
        align-items: end;
        gap: 2rem;
    }
    .card-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1440px) {
    :root { --max: 1160px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}

.theme-paper {
    --bg: #f3ecdf; --bg-raised: #fffaf3; --ink: #221c16; --muted: #5e564c;
    --line: rgba(60, 42, 24, 0.16); --gold: #9a3412; --gold-ink: #fff7f2; --soft: #efe4d4;
    --header-bg: rgba(243, 236, 223, 0.94); --menu-bg: #fffaf3; --footer-bg: #e7dccb; --wash: rgba(154, 52, 18, 0.12);
}
.theme-sea {
    --bg: #0e1724; --bg-raised: #162235; --ink: #e7eef8; --muted: #b7c6da;
    --line: rgba(125, 211, 252, 0.22); --gold: #7dd3fc; --gold-ink: #082033; --soft: #1c3048;
    --header-bg: rgba(14, 23, 36, 0.94); --menu-bg: #121c2e; --footer-bg: #0a101a; --wash: rgba(125, 211, 252, 0.16);
}
.theme-clay {
    --bg: #241816; --bg-raised: #32211e; --ink: #f8efe9; --muted: #e0cfc6;
    --line: rgba(232, 165, 152, 0.28); --gold: #e8a598; --gold-ink: #2a1612; --soft: #3d2824;
    --header-bg: rgba(36, 24, 22, 0.94); --menu-bg: #2c1d1a; --footer-bg: #1a100e; --wash: rgba(232, 165, 152, 0.16);
}
.theme-mist {
    --bg: #e7f0ea; --bg-raised: #f7fbf8; --ink: #14241c; --muted: #3f5b4d;
    --line: rgba(31, 107, 74, 0.18); --gold: #1f6b4a; --gold-ink: #f4fff8; --soft: #d5e6db;
    --header-bg: rgba(231, 240, 234, 0.94); --menu-bg: #f7fbf8; --footer-bg: #d5e6db; --wash: rgba(31, 107, 74, 0.12);
}
.theme-plum {
    --bg: #1a1222; --bg-raised: #271a33; --ink: #f6eefe; --muted: #d2c2df;
    --line: rgba(233, 179, 255, 0.24); --gold: #e9b3ff; --gold-ink: #241430; --soft: #342445;
    --header-bg: rgba(26, 18, 34, 0.94); --menu-bg: #22182c; --footer-bg: #120c18; --wash: rgba(233, 179, 255, 0.16);
}
.theme-ink {
    --bg: #121417; --bg-raised: #1c2128; --ink: #f2f4f7; --muted: #c5ced8;
    --line: rgba(244, 184, 74, 0.22); --gold: #f4b84a; --gold-ink: #241a08; --soft: #2a313a;
    --header-bg: rgba(18, 20, 23, 0.94); --menu-bg: #181c22; --footer-bg: #0c0e11; --wash: rgba(244, 184, 74, 0.14);
}

.layout-center .hero-grid,
.layout-center .page-hero .narrow { text-align: center; }
.layout-center .hero-panel { display: none; }
.layout-center .hero-actions,
.layout-center .page-hero .hero-actions { justify-content: center; }
.layout-editorial { font-family: Georgia, "Batang", "Malgun Gothic", serif; }
.layout-editorial .hero-panel { display: none; }
.layout-editorial .info-card { background: transparent; border: 0; border-top: 1px solid var(--line); border-radius: 0; padding-left: 0; }
.layout-stack .info-card { border-radius: 0; border-left: 4px solid var(--gold); }
.layout-band .band { background: var(--gold); color: var(--gold-ink); }
.layout-band .band h2,
.layout-band .band h3,
.layout-band .band p,
.layout-band .band a { color: var(--gold-ink); }

@media (min-width: 768px) {
    .layout-center .hero-actions { justify-content: center; }
    .layout-editorial .card-grid,
    .layout-stack .card-grid { grid-template-columns: 1fr; }
}

@media (min-width: 1024px) {
    .layout-center .hero-grid,
    .layout-editorial .hero-grid { grid-template-columns: 1fr; }
    .layout-editorial .card-grid,
    .layout-stack .card-grid { grid-template-columns: 1fr; }
    .layout-rail { padding-left: 240px; }
    .layout-rail .site-header {
        position: fixed; left: 0; top: 0; bottom: 0; width: 240px;
        border-right: 1px solid var(--line); border-bottom: 0;
    }
    .layout-rail .header-inner { min-height: 100%; align-items: flex-start; flex-direction: column; padding: 1.5rem 0; }
    .layout-rail .nav-desktop { display: block; width: 100%; }
    .layout-rail .nav-links { flex-direction: column; }
    .layout-rail .nav-mobile { display: none; }
    .hero-grid.hero-solo { grid-template-columns: 1fr; }
}