@font-face {
    font-family: "Neral Glyphic";
    src: url("../assets/language/neral-glyphic-regular.woff2?v=20260412i") format("woff2"),
         url("../assets/language/neral-glyphic-regular.ttf?v=20260412i") format("truetype");
    font-style: normal;
    font-weight: 400;
    font-display: swap;
}

:root {
    --bg: #f6efe4;
    --bg-strong: #efe2cf;
    --panel: rgba(255, 250, 242, 0.78);
    --panel-strong: rgba(255, 252, 247, 0.9);
    --text: #171411;
    --muted: #655b4f;
    --line: rgba(23, 20, 17, 0.12);
    --line-strong: rgba(23, 20, 17, 0.22);
    --accent: #1a56db;
    --accent-2: #9a6338;
    --shell: min(1260px, calc(100vw - 44px));
    --display: "Cormorant Garamond", "Noto Serif SC", serif;
    --body: "Noto Sans SC", "PingFang SC", sans-serif;
    --ui: "IBM Plex Sans", "Noto Sans SC", sans-serif;
    --mono: "IBM Plex Mono", monospace;
    --script: "Neral Glyphic", "DejaVu Sans", "Noto Sans Symbols 2", serif;
    --shadow: 0 22px 60px rgba(52, 34, 17, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--body);
    color: var(--text);
    background:
        radial-gradient(circle at 14% 0%, rgba(26, 86, 219, 0.12), transparent 32%),
        radial-gradient(circle at 100% 10%, rgba(154, 99, 56, 0.14), transparent 28%),
        linear-gradient(180deg, var(--bg), var(--bg-strong));
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
    opacity: 0.34;
}

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

button,
input,
select {
    font: inherit;
}

.lab-shell {
    width: var(--shell);
    margin: 0 auto;
}

.lab-grain,
.lab-orbit {
    position: fixed;
    pointer-events: none;
    z-index: -1;
}

.lab-grain {
    inset: 0;
    opacity: 0.22;
    background-image: radial-gradient(rgba(23, 20, 17, 0.08) 0.5px, transparent 0.5px);
    background-size: 10px 10px;
}

.lab-orbit {
    width: 420px;
    height: 420px;
    border-radius: 50%;
    filter: blur(30px);
    opacity: 0.3;
}

.lab-orbit-left {
    top: 80px;
    left: -120px;
    background: radial-gradient(circle, rgba(26, 86, 219, 0.18), transparent 70%);
}

.lab-orbit-right {
    top: 240px;
    right: -140px;
    background: radial-gradient(circle, rgba(154, 99, 56, 0.2), transparent 70%);
}

.lab-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(20px);
    background: color-mix(in srgb, var(--bg) 84%, transparent);
    border-bottom: 1px solid var(--line);
}

.lab-header-inner {
    min-height: 72px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 18px;
    align-items: center;
}

.lab-brand {
    display: inline-flex;
    align-items: baseline;
    gap: 12px;
}

.lab-brand-code {
    font-family: var(--mono);
    font-size: 0.86rem;
    letter-spacing: 0.18em;
    color: var(--accent);
}

.lab-brand-name {
    font-family: var(--ui);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.lab-nav {
    justify-self: center;
    display: inline-flex;
    gap: 18px;
    flex-wrap: wrap;
    font-family: var(--ui);
    color: var(--muted);
}

.lab-nav a,
.lab-back,
.hero-action,
.doc-link {
    position: relative;
}

.lab-nav a::after,
.lab-back::after,
.hero-action::after,
.doc-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
}

.lab-nav a:hover::after,
.lab-back:hover::after,
.hero-action:hover::after,
.doc-link:hover::after {
    transform: scaleX(1);
}

.lab-back {
    font-family: var(--ui);
    color: var(--muted);
}

.hero {
    padding: 56px 0 34px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: 42px;
    align-items: start;
}

.section-kicker {
    margin: 0 0 12px;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    color: var(--accent);
}

.hero h1,
.section-head h2,
.glyph-card h3,
.lexicon-heading,
.topic-card h3,
.example-card h4,
.text-card h4 {
    font-family: var(--display);
    letter-spacing: -0.04em;
}

.hero h1 {
    margin: 0;
    font-size: clamp(3.2rem, 8vw, 6.8rem);
    line-height: 0.92;
}

.hero-summary {
    max-width: 38ch;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.9;
}

.hero-actions {
    margin-top: 28px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-action {
    display: inline-flex;
    align-items: center;
    font-family: var(--ui);
    color: var(--muted);
}

.hero-action-primary {
    color: var(--text);
}

.hero-panel,
.doc-card,
.phonology-card,
.glyph-card,
.lexicon-row,
.example-card,
.text-card {
    border: 1px solid var(--line-strong);
    background: linear-gradient(180deg, var(--panel-strong), var(--panel));
    box-shadow: var(--shadow);
}

.hero-panel {
    padding: 28px;
    display: grid;
    gap: 26px;
    clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.hero-panel-copy p,
.section-side,
.doc-card p,
.phonology-card p,
.topic-card p,
.example-meta,
.text-summary,
.lexicon-definition {
    color: var(--muted);
}

.panel-tag {
    display: inline-block;
    margin-bottom: 12px;
    font-family: var(--mono);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    color: var(--accent);
}

.hero-metrics {
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.hero-metrics div {
    padding-top: 12px;
    border-top: 1px solid var(--line);
}

.hero-metrics dt {
    font-family: var(--ui);
    font-size: 0.82rem;
    color: var(--muted);
}

.hero-metrics dd {
    margin: 10px 0 0;
    font-family: var(--display);
    font-size: 1.8rem;
}

.section {
    padding: 34px 0 58px;
}

.section-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(240px, 0.7fr);
    gap: 20px;
    align-items: end;
    margin-bottom: 24px;
}

.section-head-stack {
    align-items: start;
}

.section-head h2 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.4rem);
}

.section-side {
    margin: 0;
    line-height: 1.8;
}

.doc-grid,
.glyph-grid {
    display: grid;
    gap: 18px;
}

.doc-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 24px;
}

.doc-card,
.phonology-card,
.glyph-card,
.text-card {
    padding: 22px;
}

.doc-card h3,
.phonology-card h3,
.glyph-card h3,
.example-column h3,
.text-column h3 {
    margin: 0 0 12px;
    font-size: 1.55rem;
}

.doc-link {
    display: inline-flex;
    margin-top: 18px;
    font-family: var(--ui);
    color: var(--accent);
}

.phonology-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 18px;
}

.sound-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.chip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sound-chip {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.45);
    font-family: var(--ui);
    font-size: 0.88rem;
}

.sound-chip code {
    font-family: var(--mono);
    color: var(--accent);
}

.topic-list {
    display: grid;
    gap: 12px;
}

.topic-card {
    padding: 14px 16px;
    border-top: 1px solid var(--line);
}

.topic-card:first-child {
    border-top: 0;
    padding-top: 0;
}

.topic-card h3 {
    margin: 0 0 8px;
    font-size: 1.28rem;
}

.topic-linked {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.topic-linked span {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(26, 86, 219, 0.08);
    font-family: var(--mono);
    font-size: 0.76rem;
    color: var(--accent);
}

.glyph-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.glyph-card {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.glyph-card img {
    width: 72px;
    height: 72px;
    display: block;
}

.glyph-card h3 {
    margin: 0 0 6px;
    font-size: 1.3rem;
}

.glyph-meta {
    display: inline-flex;
    gap: 8px;
    flex-wrap: wrap;
    font-family: var(--ui);
    font-size: 0.82rem;
    color: var(--muted);
}

.lexicon-controls {
    display: flex;
    justify-content: end;
    gap: 14px;
    flex-wrap: wrap;
}

.search-field,
.filter-field {
    display: grid;
    gap: 8px;
    min-width: 220px;
    font-family: var(--ui);
    font-size: 0.88rem;
    color: var(--muted);
}

.search-field input,
.filter-field select {
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--line-strong);
    background: rgba(255, 255, 255, 0.64);
    color: var(--text);
}

.lexicon-meta {
    margin-bottom: 14px;
    font-family: var(--ui);
    color: var(--muted);
}

.lexicon-table {
    border-top: 1px solid var(--line);
}

.lexicon-row {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(180px, 0.5fr) minmax(0, 1fr);
    gap: 18px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--line);
}

.lexicon-heading {
    margin: 0 0 10px;
    font-size: 1.6rem;
}

.lexicon-native {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.word-native {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    min-height: 32px;
}

.word-native img {
    width: 26px;
    height: 26px;
    display: block;
}

.word-fallback {
    font-family: var(--script);
    font-size: 0.84rem;
    color: var(--muted);
    letter-spacing: 0.03em;
    font-variant-ligatures: none;
}

.lexicon-romanized {
    font-family: var(--mono);
    color: var(--accent);
}

.lexicon-chip-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.chip {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(23, 20, 17, 0.06);
    font-family: var(--ui);
    font-size: 0.76rem;
    color: var(--muted);
}

.corpus-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.96fr) minmax(320px, 1.04fr);
    gap: 20px;
}

.example-list,
.text-list {
    display: grid;
    gap: 14px;
}

.example-card {
    padding: 20px;
}

.example-card h4,
.text-card h4 {
    margin: 0 0 12px;
    font-size: 1.35rem;
}

.example-native,
.sentence-native {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.sentence-native .word-native {
    margin-right: 2px;
}

.sentence-line {
    margin: 8px 0 0;
}

.sentence-label {
    display: inline-block;
    min-width: 82px;
    font-family: var(--mono);
    font-size: 0.76rem;
    color: var(--accent);
}

.text-card {
    display: grid;
    gap: 12px;
}

.text-card article {
    padding-top: 12px;
    border-top: 1px solid var(--line);
}

.text-card article:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.lab-footer {
    padding: 0 0 30px;
}

.lab-footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-family: var(--ui);
}

@media (max-width: 1120px) {
    .doc-grid,
    .glyph-grid,
    .phonology-grid,
    .corpus-layout,
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .lexicon-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .lab-header-inner,
    .section-head {
        grid-template-columns: 1fr;
    }

    .lab-nav {
        justify-self: start;
    }

    .doc-grid,
    .glyph-grid,
    .sound-columns {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 34px;
    }

    .hero h1 {
        font-size: clamp(2.8rem, 16vw, 4.4rem);
    }

    .lexicon-controls {
        justify-content: start;
    }
}