/* ==========================================================
   Chinese Queer Corpus (CQC) — site stylesheet, v2
   Helvetica Neue light, wide letter-spacing, uppercase h2,
   hairlines, a cool white ground, and purple (#7b4f80) as the
   single accent. Radius scale: controls 8px, cards 12px,
   pills 999px.
   ========================================================== */

:root {
    /* neutrals: cool white, slightly purple-biased greys */
    --bg: #fbfafc;
    --panel: #ffffff;
    --ink: #1f1b22;          /* headings */
    --text: #2f2a33;         /* body */
    --text-soft: #57505c;    /* paragraphs */
    --text-faint: #8a8290;   /* captions, meta */
    --rule: #e8e3ec;         /* hairlines */
    --rule-strong: #cfc6d6;
    --tint: #f4f1f6;         /* fills: code, tracks */

    /* accent: yam purple 薯紫 */
    --accent: #7b4f80;
    --accent-dark: #5f3c64;  /* hover on filled buttons */
    --accent-mid: #cdb5cf;   /* link underlines, borders */
    --accent-soft: #f5eef5;  /* notes, highlights */

    --todo-bg: #fff3b0;

    /* radius */
    --r-sm: 8px;
    --r-lg: 12px;
    --r-pill: 999px;

    --measure: 800px;
    --font: 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --mono: 'SFMono-Regular', Menlo, Consolas, monospace;
    color-scheme: light;
}

/* ---------- reset ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: rgba(123, 79, 128, 0.12);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

::selection {
    background: var(--accent-soft);
    color: var(--ink);
}

/* ---------- skip link ---------- */
.skip-link {
    position: absolute;
    left: -9999px;
}

.skip-link:focus {
    left: 16px;
    top: 16px;
    background: var(--accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: var(--r-sm);
    z-index: 10;
}

/* ---------- header and navigation ---------- */
header {
    background-color: var(--panel);
    text-align: center;
    padding: 48px 16px 28px;
    border-bottom: 1px solid var(--rule);
}

.site-title {
    font-size: 40px;
    font-weight: 300;
    letter-spacing: 0.1em;
    line-height: 1.25;
    color: var(--ink);
    margin-bottom: 6px;
}

.site-title a {
    color: inherit;
    text-decoration: none;
}

.site-subtitle {
    font-size: 15px;
    color: var(--text-faint);
    letter-spacing: 0.08em;
    margin-bottom: 24px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 10px;
}

nav a {
    display: inline-block;
    color: var(--text);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 6px 12px;
    border-radius: var(--r-pill);
    transition: background-color 0.15s, color 0.15s;
}

nav a:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

nav a[aria-current] {
    color: #fff;
    background: var(--accent);
}

/* ---------- main ---------- */
main {
    background-color: var(--panel);
}

.content-section {
    padding: 72px 20px;
    max-width: var(--measure);
    margin: 0 auto;
    border-bottom: 1px solid var(--rule);
}

.content-section:last-child {
    border-bottom: none;
}

h1 {
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 0.08em;
    line-height: 1.3;
    color: var(--ink);
    margin-bottom: 24px;
    text-wrap: balance;
}

h2 {
    font-size: 26px;
    font-weight: 300;
    letter-spacing: 0.1em;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 28px;
    text-transform: uppercase;
    text-wrap: balance;
}

h3 {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--ink);
    margin: 36px 0 12px;
}

p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-soft);
    margin-bottom: 20px;
}

.lead {
    font-size: 20px;
    line-height: 1.7;
    color: var(--text);
    font-weight: 300;
}

.small,
p.small {
    font-size: 14px;
    color: var(--text-faint);
    margin-bottom: 12px;
}

ul.list,
ol.list {
    margin: 0 0 24px 22px;
    color: var(--text-soft);
    font-size: 17px;
}

ul.list li,
ol.list li {
    margin-bottom: 8px;
    padding-left: 4px;
}

ul.list li::marker,
ol.list li::marker {
    color: var(--accent);
}

strong {
    font-weight: 600;
    color: var(--ink);
}

/* links: purple underline, long addresses wrap instead of overflowing */
a {
    color: var(--ink);
    text-decoration: underline;
    text-decoration-color: var(--accent-mid);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    overflow-wrap: anywhere;
}

a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

/* ---------- hero ---------- */
.hero h1 {
    margin-bottom: 8px;
}

.tagline {
    font-size: 15px;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 8px 0 24px;
}

.meta-line {
    font-size: 14px;
    color: var(--text-faint);
    letter-spacing: 0.04em;
    margin-bottom: 0;
}

.principle {
    font-size: 30px;
    font-weight: 300;
    letter-spacing: 0.04em;
    line-height: 1.4;
    color: var(--accent);
    margin-bottom: 16px;
}

/* ---------- buttons ---------- */
.button {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    border-radius: var(--r-sm);
    padding: 12px 22px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    text-align: center;
    margin: 8px 12px 8px 0;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.hero-actions .button {
    margin: 0;
}

.button:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
}

.button.secondary {
    background: var(--panel);
    color: var(--accent);
    border-color: var(--accent-mid);
}

.button.secondary:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent-dark);
}

/* ---------- key figures and cards (rounded boxes) ---------- */
.figures {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin: 32px 0 8px;
}

.figure {
    padding: 20px 18px;
    border: 1px solid var(--rule);
    border-radius: var(--r-lg);
    background: var(--panel);
}

.figure .num {
    display: block;
    font-size: 32px;
    font-weight: 300;
    color: var(--accent);
    line-height: 1.2;
}

.figure .label {
    display: block;
    font-size: 13px;
    color: var(--text-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-top: 6px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.card {
    display: block;
    border: 1px solid var(--rule);
    border-radius: var(--r-lg);
    padding: 22px 20px;
    text-decoration: none;
    color: var(--text);
    background: var(--panel);
    transition: border-color 0.15s, background-color 0.15s;
}

.card:hover {
    border-color: var(--accent-mid);
    background: var(--accent-soft);
    color: var(--text);
}

/* ---------- tables ---------- */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 16px 0 28px;
    border: 1px solid var(--rule);
    border-radius: var(--r-lg);
    padding: 4px 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
}

caption {
    text-align: left;
    font-size: 13px;
    color: var(--text-faint);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 12px 0 8px;
}

th,
td {
    text-align: left;
    vertical-align: top;
    padding: 10px 12px 10px 0;
    border-bottom: 1px solid var(--rule);
    color: var(--text-soft);
}

tbody tr:last-child th,
tbody tr:last-child td {
    border-bottom: none;
}

th {
    font-weight: 600;
    color: var(--ink);
    font-size: 13px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-bottom-color: var(--rule-strong);
}

td.num,
th.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

table.overview th {
    width: 32%;
    text-transform: none;
    letter-spacing: 0.02em;
    font-size: 15px;
    border-bottom-color: var(--rule);
}

/* ---------- bar charts (no JavaScript) ---------- */
.bars {
    margin: 12px 0 32px;
}

.bar-row {
    display: grid;
    grid-template-columns: 130px 1fr 56px;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-soft);
    margin-bottom: 8px;
}

.bar-track {
    background: var(--tint);
    height: 12px;
    border-radius: var(--r-pill);
    overflow: hidden;
}

.bar-fill {
    background: rgba(127, 127, 127, 0.7); /* tab10 grey at 70%, same palette as the corpus figures */
    height: 100%;
    border-radius: var(--r-pill);
}

.bar-row .count {
    text-align: right;
    font-variant-numeric: tabular-nums;
    color: var(--ink);
}

/* ---------- notes ---------- */
.note {
    background: var(--accent-soft);
    border-radius: var(--r-lg);
    padding: 18px 20px;
    margin: 24px 0;
}

.note p {
    margin-bottom: 8px;
    font-size: 16px;
    color: var(--text);
}

.note p:last-child {
    margin-bottom: 0;
}

/* ---------- numbered steps ---------- */
.steps {
    list-style: none;
    counter-reset: step;
    margin: 20px 0 28px;
}

.steps li {
    counter-increment: step;
    position: relative;
    padding: 0 0 22px 52px;
    color: var(--text-soft);
    font-size: 17px;
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: -2px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    text-align: center;
    line-height: 34px;
    font-size: 15px;
    font-weight: 600;
}

.steps li strong {
    display: block;
}

/* ---------- checklist ---------- */
ul.checklist {
    list-style: none;
    margin: 0 0 24px;
}

ul.checklist li {
    position: relative;
    padding: 0 0 12px 32px;
    color: var(--text-soft);
    font-size: 17px;
}

ul.checklist li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--accent);
    border-radius: 4px;
}

/* ---------- code, templates, citations ---------- */
pre,
code {
    font-family: var(--mono);
    font-size: 14px;
    letter-spacing: 0;
}

pre {
    background: var(--tint);
    border-radius: var(--r-lg);
    padding: 18px 20px;
    overflow-x: auto;
    white-space: pre-wrap;
    line-height: 1.6;
    color: var(--text);
    margin: 12px 0 24px;
}

p.pub-entry {
    font-size: 15px;
    color: var(--text-soft);
    background: var(--tint);
    border-radius: var(--r-sm);
    padding: 12px 16px;
    line-height: 1.7;
    margin-bottom: 14px;
}

/* ---------- FAQ ---------- */
details {
    border-bottom: 1px solid var(--rule);
}

summary {
    cursor: pointer;
    list-style: none;
    font-size: 17px;
    font-weight: 500;
    color: var(--ink);
    padding: 16px 32px 16px 0;
    position: relative;
}

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

summary::after {
    content: "+";
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 22px;
    font-weight: 300;
    color: var(--accent);
}

details[open] summary::after {
    content: "−";
}

details p {
    margin: 0 0 18px;
}

/* ---------- agreement ---------- */
.agreement ol {
    margin: 0 0 20px 22px;
    color: var(--text-soft);
    font-size: 16px;
}

.agreement li {
    margin-bottom: 8px;
}

.agreement li::marker {
    color: var(--accent);
}

/* ---------- placeholder marker ---------- */
.todo {
    background: var(--todo-bg);
    color: #000;
    padding: 0 4px;
    border-radius: 4px;
}

/* ---------- footer ---------- */
footer {
    text-align: center;
    padding: 32px 16px;
    background-color: var(--bg);
    border-top: 1px solid var(--rule);
}

footer p {
    font-size: 13px;
    color: var(--text-faint);
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

footer a {
    color: var(--text-soft);
}

/* ---------- phones ---------- */
@media (max-width: 600px) {
    header {
        padding: 22px 12px 14px;
    }
    .site-title {
        font-size: 22px;
        letter-spacing: 0.08em;
        margin-bottom: 2px;
    }
    .site-subtitle {
        font-size: 12px;
        letter-spacing: 0.04em;
        margin-bottom: 12px;
    }
    nav ul {
        gap: 4px 2px;
    }
    nav a {
        font-size: 12px;
        letter-spacing: 0.08em;
        padding: 7px 10px;
    }
    .content-section {
        padding: 40px 16px;
    }
    h1 {
        font-size: 28px;
        margin-bottom: 18px;
    }
    h2 {
        font-size: 21px;
        margin-bottom: 20px;
    }
    h3 {
        margin-top: 28px;
    }
    p,
    ul.list,
    ol.list,
    .steps li,
    ul.checklist li {
        font-size: 16px;
    }
    .lead {
        font-size: 18px;
    }
    .tagline {
        font-size: 13px;
        margin-bottom: 20px;
    }
    .principle {
        font-size: 24px;
    }
    .hero-actions {
        flex-direction: column;
        gap: 10px;
    }
    .hero-actions .button {
        display: block;
        width: 100%;
    }
    .table-wrap {
        padding: 2px 12px;
    }
    table {
        font-size: 14px;
    }
    .bar-row {
        grid-template-columns: 108px 1fr 48px;
        gap: 10px;
        font-size: 14px;
    }
    .steps li {
        padding-left: 46px;
    }
    .steps li::before {
        width: 30px;
        height: 30px;
        line-height: 30px;
        font-size: 14px;
    }
}

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

@media print {
    nav,
    .button {
        display: none;
    }
}

/* ---------- three-column tables stack on phones ---------- */
@media (max-width: 600px) {
    table.stack thead {
        display: none;
    }
    table.stack tr {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--rule);
    }
    table.stack tbody tr:last-child {
        border-bottom: none;
    }
    table.stack td {
        display: block;
        border: none;
        padding: 2px 0;
    }
    table.stack td:first-child {
        font-weight: 600;
        color: var(--ink);
    }
    table.stack td:last-child {
        color: var(--text-faint);
        font-size: 13px;
        margin-top: 4px;
    }
}