/* ============================================================
   RuDao.org - Board Games page (/games)
   WeiQi / Go + Chinese Chess / Xiangqi
   Palette and type tokens come from css/styles.css.
   Decorative Quintessential is used for the big title ONLY, upright.
   ============================================================ */

.gm-body { background: var(--paper); }

.gm-main { padding-bottom: clamp(3rem, 7vw, 6rem); }

/* ---------- hero ---------- */
.gm-hero {
    /* The site nav is position:fixed and carries a blog-alert banner, so the
       first content block needs to clear both of them. */
    padding: clamp(7rem, 9vw, 8.5rem) 0 clamp(2rem, 4vw, 3.2rem);
    border-bottom: 1px solid var(--paper-shadow);
    background: linear-gradient(180deg, #f7f2e7 0%, var(--paper) 100%);
}
.gm-kicker {
    font-family: var(--font-sans);
    font-size: .72rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--vermillion);
    margin: 0 0 .9rem;
}
.gm-h1 {
    font-family: var(--font-serif-en);
    font-style: normal !important;
    font-weight: 400;
    font-size: clamp(2.2rem, 5.4vw, 3.7rem);
    line-height: 1.16;
    letter-spacing: .01em;
    color: var(--ink-black);
    margin: 0 0 1.1rem;
}
.gm-lead {
    font-family: var(--font-serif-en-body);
    font-size: clamp(1.06rem, 1.55vw, 1.28rem);
    line-height: 1.68;
    color: var(--ink-soft);
    max-width: 66ch;
    margin: 0 0 .55rem;
}
.gm-lead-cn { margin: 0 0 1.1rem; color: var(--ink-mid); }
.gm-by {
    font-family: var(--font-sans);
    font-size: .82rem;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}
.gm-by a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .3); }
.gm-by a:hover { border-bottom-color: var(--vermillion); }

/* ---------- sound bar ---------- */
.gm-soundbar {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: .55rem;
    margin-bottom: 1rem;
    padding: .65rem .95rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
    font-family: var(--font-sans);
}
.gm-audio-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: .5rem 1rem;
}
.gm-audio-row + .gm-audio-row {
    border-top: 1px solid var(--paper-shadow);
    padding-top: .6rem;
}
.gm-sound-label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .78rem;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--ink-soft);
}
.gm-sound-icon { font-size: 1rem; color: var(--vermillion); }
.gm-sound-icon-abc { font-size: .8rem; font-weight: 400; letter-spacing: .02em; }
.gm-sound-ctl { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem .85rem; }
.gm-mini { display: inline-flex; align-items: center; gap: .4rem; }
.gm-mini > span {
    font-size: .7rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gray);
}
.gm-mini select {
    font-family: var(--font-sans);
    font-size: .76rem;
    color: var(--ink-soft);
    padding: .38rem .5rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    background: #fff;
    max-width: 175px;
}
.gm-mini select:focus-visible { outline: 2px solid var(--vermillion); outline-offset: 2px; }
.gm-mini select:disabled { opacity: .45; }
.gm-sound-toggle {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    min-width: 4.9rem;
    padding: .4rem .75rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    background: #fff;
    color: var(--gray);
    font-family: var(--font-sans);
    font-size: .76rem;
    letter-spacing: .05em;
    transition: border-color .18s ease, background .18s ease, color .18s ease;
}
.gm-sound-toggle:hover { border-color: var(--gold); }
.gm-sound-toggle.is-on {
    border-color: var(--vermillion);
    background: #fff8f3;
    color: var(--vermillion-deep);
}
.gm-sound-toggle:focus-visible, .gm-volume input:focus-visible {
    outline: 2px solid var(--vermillion);
    outline-offset: 2px;
}
.gm-sound-dot {
    width: .5rem;
    height: .5rem;
    border-radius: 50%;
    background: var(--gray);
    box-shadow: 0 0 0 2px rgba(120, 110, 95, .13);
}
.gm-sound-toggle.is-on .gm-sound-dot {
    background: var(--vermillion);
    box-shadow: 0 0 0 2px rgba(169, 50, 38, .18);
}
.gm-volume { display: inline-flex; align-items: center; gap: .45rem; }
.gm-volume > span {
    font-size: .7rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gray);
}
.gm-volume input[type="range"] {
    width: 92px;
    height: 1.1rem;
    margin: 0;
    accent-color: var(--vermillion);
    cursor: pointer;
}
.gm-volume input:disabled { opacity: .4; cursor: default; }
.gm-sound-hint { font-size: .72rem; line-height: 1.4; color: var(--gray); }

/* ---------- On / Off segmented switch, volume readout, test sound ----------
   An "On" button must always turn sound ON. The previous single pill showed
   the current state, so clicking "On" actually muted the board - readers
   reported the control as broken. Two explicit buttons remove the ambiguity. */
.gm-switch {
    display: inline-flex;
    align-items: stretch;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    overflow: hidden;
    background: #fff;
}
.gm-switch-btn {
    min-width: 3.35rem;
    padding: .38rem .6rem;
    border: 0;
    background: transparent;
    color: var(--gray);
    font-family: var(--font-sans);
    font-size: .76rem;
    letter-spacing: .05em;
    line-height: 1.2;
    transition: background .18s ease, color .18s ease;
}
.gm-switch-btn + .gm-switch-btn { border-left: 1px solid var(--paper-shadow); }
.gm-switch-btn:hover { background: rgba(169, 50, 38, .07); color: var(--vermillion-deep); }
.gm-switch-btn.is-on {
    background: #fff8f3;
    color: var(--vermillion-deep);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 var(--vermillion);
}
.gm-switch-btn:focus-visible { outline: 2px solid var(--vermillion); outline-offset: -2px; }
.gm-volume output {
    min-width: 2.7rem;
    font-family: var(--font-sans);
    font-size: .73rem;
    font-variant-numeric: tabular-nums;
    color: var(--vermillion-deep);
    text-align: right;
}
.gm-test-btn {
    padding: .38rem .7rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    background: #fff;
    color: var(--ink-mid);
    font-family: var(--font-sans);
    font-size: .74rem;
    letter-spacing: .03em;
    white-space: nowrap;
    transition: border-color .18s ease, background .18s ease;
}
.gm-test-btn:hover { border-color: var(--vermillion); background: #fff8f3; color: var(--vermillion-deep); }
.gm-test-btn:focus-visible { outline: 2px solid var(--vermillion); outline-offset: 2px; }
/* Small visual confirmation that a sound actually fired. */
.gm-audio-row.is-sounding .gm-sound-icon { color: var(--gold); transform: scale(1.28); }
.gm-sound-icon { transition: color .18s ease, transform .18s ease; }

/* ---------- tabs ---------- */
.gm-play { padding-top: clamp(1.8rem, 3.5vw, 2.8rem); }
.gm-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem;
    margin-bottom: clamp(1.4rem, 2.6vw, 2.1rem);
    border-bottom: 1px solid var(--paper-shadow);
    padding-bottom: 1rem;
}
.gm-tab {
    flex: 1 1 240px;
    text-align: left;
    padding: .9rem 1.15rem;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
    background: #fffdf7;
    transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.gm-tab:hover { border-color: var(--gold-soft); }
.gm-tab.is-on {
    border-color: var(--vermillion);
    background: #fff8f3;
    box-shadow: inset 0 3px 0 var(--vermillion);
}
.gm-tab-en {
    display: inline;
    font-family: var(--font-serif-en-body);
    font-size: 1.35rem;
    line-height: 1.25;
    color: var(--ink-black);
}
.gm-tab.is-on .gm-tab-en { color: var(--vermillion-deep); }
.gm-tab .zh { margin-left: .5rem; }
.gm-tab-sub {
    display: block;
    margin-top: .28rem;
    font-family: var(--font-sans);
    font-size: .74rem;
    letter-spacing: .02em;
    color: var(--gray);
}
.gm-tab:focus-visible, .gm-btn:focus-visible, .gm-chat-btn:focus-visible,
.gm-field select:focus-visible {
    outline: 2px solid var(--vermillion);
    outline-offset: 2px;
}

/* ---------- layout ---------- */
.gm-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(270px, 330px);
    gap: clamp(1.4rem, 3vw, 2.6rem);
    align-items: start;
}
.gm-stage { min-width: 0; }
.gm-panel[hidden] { display: none !important; }
.gm-panel-head { margin-bottom: 1rem; }
.gm-h2 {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    line-height: 1.25;
    color: var(--ink-black);
    margin: 0 0 .35rem;
}
.gm-panel-sub {
    font-family: var(--font-serif-en-body);
    font-size: 1.02rem;
    line-height: 1.58;
    color: var(--ink-mid);
    margin: 0;
}

/* ---------- boards ---------- */
.gm-board-shell {
    padding: clamp(.6rem, 1.4vw, 1rem);
    background: var(--paper-warm);
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
    box-shadow: 0 8px 26px rgba(80, 60, 30, .09);
    display: flex;
    justify-content: center;
}
.go-board, .xq-board { width: 100%; max-width: 560px; }
.xq-board { max-width: 460px; }
.go-svg, .xq-svg {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 5px;
    cursor: pointer;
    touch-action: manipulation;
}
.go-svg {
    background:
        radial-gradient(ellipse at 30% 22%, rgba(255, 246, 214, .55), transparent 60%),
        linear-gradient(135deg, #ecd6a8 0%, #e0c08a 48%, #d3ad72 100%);
    box-shadow: inset 0 0 0 1px rgba(96, 68, 32, .35), 0 4px 12px rgba(70, 48, 20, .2);
}
.xq-svg {
    background:
        radial-gradient(ellipse at 30% 20%, rgba(255, 248, 224, .6), transparent 62%),
        linear-gradient(140deg, #efdab0 0%, #e4c795 55%, #d9b77f 100%);
    box-shadow: inset 0 0 0 1px rgba(96, 68, 32, .35), 0 4px 12px rgba(70, 48, 20, .2);
}

/* ---------- controls ---------- */
.gm-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: .7rem .9rem;
    margin-top: 1.1rem;
    padding: 1rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.gm-field { display: flex; flex-direction: column; gap: .28rem; min-width: 130px; flex: 1 1 150px; }
.gm-field > span {
    font-family: var(--font-sans);
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--gray);
}
.gm-field select {
    font-family: var(--font-sans);
    font-size: .84rem;
    color: var(--ink-soft);
    padding: .48rem .55rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    background: #fff;
    width: 100%;
}
.gm-buttons { display: flex; flex-wrap: wrap; gap: .45rem; width: 100%; }
.gm-btn {
    font-family: var(--font-sans);
    font-size: .78rem;
    letter-spacing: .04em;
    padding: .55rem .95rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 3px;
    background: #fff;
    color: var(--ink-soft);
    transition: background .18s ease, border-color .18s ease, color .18s ease;
}
.gm-btn:hover { border-color: var(--gold); background: #faf3e4; }
.gm-btn-primary { background: var(--vermillion); border-color: var(--vermillion); color: #fff; }
.gm-btn-primary:hover { background: var(--vermillion-deep); border-color: var(--vermillion-deep); color: #fff; }
.gm-btn-quiet { color: var(--gray); }

/* ---------- status + move log ---------- */
.gm-status {
    margin-top: .9rem;
    padding: .7rem .95rem;
    background: var(--paper-warm);
    border-left: 3px solid var(--vermillion);
    font-family: var(--font-serif-en-body);
    font-size: 1.03rem;
    line-height: 1.5;
    color: var(--ink-soft);
}
.gm-status.is-alert { border-left-color: var(--gold); color: var(--vermillion-deep); }
.gm-status.is-over { border-left-color: #2f7d5b; }
.gm-log {
    list-style: none;
    margin: .7rem 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .35rem .5rem;
    min-height: 1.4rem;
}
.gm-log li {
    font-family: var(--font-sans);
    font-size: .72rem;
    padding: .22rem .5rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 2px;
    background: #fffdf7;
    color: var(--ink-mid);
    white-space: nowrap;
}
.gm-log li.is-ai { background: #f7f1e4; }

/* ---------- sidebar ---------- */
.gm-sidebar { display: flex; flex-direction: column; gap: 1.1rem; }
.tony-card, .gm-chat-card, .gm-rules-card {
    padding: 1.25rem 1.3rem;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
    background: #fffdf7;
}
.tony-card { border-top: 3px solid var(--vermillion); }
.tony-head { display: flex; align-items: center; gap: .85rem; margin-bottom: 1rem; }
.tony-seal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px; height: 42px;
    flex: 0 0 42px;
    background: var(--vermillion);
    color: #fff;
    font-family: var(--font-cn);
    font-size: 22px;
    font-weight: 400;
    border-radius: 3px;
}
.tony-title {
    font-family: var(--font-serif-en-body);
    font-size: 1.18rem;
    color: var(--ink-black);
    margin: 0 0 .1rem;
}
.tony-sub { font-family: var(--font-sans); font-size: .74rem; color: var(--gray); margin: 0; }
.tony-quote { margin: 0; padding: 0 0 .9rem; border-bottom: 1px solid var(--paper-shadow); }
.tony-en {
    font-family: var(--font-serif-en-body);
    font-size: 1.1rem;
    line-height: 1.55;
    color: var(--ink-soft);
    margin: 0 0 .45rem;
}
.tony-zh { color: var(--ink-mid); margin: 0 0 .6rem; line-height: 1.7; }
.tony-quote cite {
    display: block;
    font-family: var(--font-sans);
    font-size: .7rem;
    letter-spacing: .05em;
    color: var(--vermillion);
    font-style: normal;
}
.tony-note {
    font-family: var(--font-sans);
    font-size: .72rem;
    line-height: 1.65;
    color: var(--gray);
    margin: .85rem 0 0;
}
.gm-card-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: 1.2rem;
    color: var(--ink-black);
    margin: 0 0 .5rem;
}
.gm-chat-card p, .gm-rules-card li {
    font-family: var(--font-serif-en-body);
    font-size: .98rem;
    line-height: 1.65;
    color: var(--ink-mid);
}
.gm-chat-card p { margin: 0 0 .8rem; }
.gm-chat-btn {
    display: block;
    width: 100%;
    text-align: center;
    font-family: var(--font-sans);
    font-size: .82rem;
    letter-spacing: .04em;
    padding: .7rem .8rem;
    background: var(--vermillion);
    color: #fff;
    border-radius: 3px;
    transition: background .18s ease;
}
.gm-chat-btn:hover { background: var(--vermillion-deep); }
.gm-chat-alt { font-family: var(--font-sans) !important; font-size: .74rem !important; margin: .75rem 0 0 !important; color: var(--gray); }
.gm-chat-alt a { color: var(--vermillion); }
.gm-rules-card ul { margin: 0 0 .8rem; padding-left: 1.1rem; }
.gm-rules-card li { margin-bottom: .4rem; }
.gm-rules-link {
    font-family: var(--font-sans);
    font-size: .76rem;
    letter-spacing: .06em;
    color: var(--vermillion);
    border-bottom: 1px solid rgba(169, 50, 38, .3);
}

/* ---------- bilingual beginner guide ---------- */
.gm-guide, .gm-guide-card, #tab-go, #tab-xq { scroll-margin-top: 8.5rem; }
/* Keep a short Chinese run together when a long English heading wraps. */
.gm-about-h .zh, .gm-guide-title .zh, .gm-guide-h .zh, .gm-guide-sum .zh { white-space: nowrap; }
.gm-guide-jump {
    margin: 0 0 .8rem;
    font-family: var(--font-sans);
    font-size: .82rem;
    line-height: 1.6;
}
.gm-guide-jump a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .35); }
.gm-panel-guide + .gm-panel-guide { margin-left: .9rem; }
.gm-panel-guide {
    display: inline-block;
    margin-top: .55rem;
    font-family: var(--font-sans);
    font-size: .76rem;
    letter-spacing: .05em;
    color: var(--vermillion);
    border-bottom: 1px solid rgba(169, 50, 38, .3);
}
.gm-guide {
    margin-top: clamp(2.4rem, 5vw, 4rem);
    padding-top: clamp(1.8rem, 3.5vw, 2.8rem);
    border-top: 1px solid var(--paper-shadow);
}
.gm-guide-lead {
    font-family: var(--font-serif-en-body);
    font-size: 1.06rem;
    line-height: 1.7;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 0 0 1.4rem;
}
.gm-guide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1rem, 2.4vw, 1.8rem);
    align-items: start;
}
.gm-guide-card {
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
    overflow: hidden;
}
.gm-guide-sum {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: .4rem .8rem;
    padding: .95rem 1.1rem;
    background: #fff8f3;
    border-bottom: 1px solid var(--paper-shadow);
    cursor: pointer;
    list-style: none;
}
.gm-guide-sum::-webkit-details-marker { display: none; }
.gm-guide-sum::after {
    content: '+';
    margin-left: auto;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1;
    color: var(--vermillion);
}
.gm-guide-card[open] .gm-guide-sum::after { content: '-'; }
.gm-guide-num {
    font-family: var(--font-sans);
    font-size: .72rem;
    letter-spacing: .16em;
    color: var(--vermillion);
}
.gm-guide-title {
    font-family: var(--font-serif-en-body);
    font-size: 1.35rem;
    line-height: 1.3;
    color: var(--ink-black);
}
.gm-guide-tag {
    font-family: var(--font-sans);
    font-size: .72rem;
    color: var(--gray);
}
.gm-guide-body { padding: 1.05rem 1.2rem 1.3rem; }
.gm-guide-goal, .gm-guide-tip {
    font-family: var(--font-serif-en-body);
    font-size: 1rem;
    line-height: 1.68;
    color: var(--ink-mid);
    margin: 0 0 .9rem;
}
.gm-guide-label {
    display: inline-block;
    margin-right: .45rem;
    font-family: var(--font-sans);
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--vermillion);
}
.gm-guide-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: 1.08rem;
    line-height: 1.35;
    color: var(--ink-black);
    margin: 1.15rem 0 .5rem;
}
.gm-guide-body > .gm-guide-h:first-of-type { margin-top: .2rem; }
.gm-guide-list { margin: 0 0 .9rem; padding-left: 1.25rem; }
.gm-guide-list li {
    font-family: var(--font-serif-en-body);
    font-size: .96rem;
    line-height: 1.66;
    color: var(--ink-mid);
    margin-bottom: .42rem;
}
.gm-guide-tip {
    padding: .7rem .85rem;
    background: var(--paper-warm);
    border-left: 3px solid var(--gold);
    margin: .4rem 0 0;
}
.gm-glossary-card {
    margin-top: 1.2rem;
    padding: 1.15rem 1.3rem 1.4rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.gm-glossary-intro, .gm-glossary-note {
    font-family: var(--font-serif-en-body);
    font-size: .96rem;
    line-height: 1.65;
    color: var(--ink-mid);
    margin: 0 0 .9rem;
}
.gm-glossary-note { font-size: .86rem; color: var(--gray); margin: .9rem 0 0; }
.gm-glossary { border-top: 1px solid var(--paper-shadow); }
.gm-glossary-row {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr) minmax(0, 1.4fr);
    gap: .5rem 1rem;
    padding: .48rem .2rem;
    border-bottom: 1px solid var(--paper-shadow);
    font-family: var(--font-serif-en-body);
    font-size: .95rem;
    line-height: 1.5;
    color: var(--ink-mid);
}
.gm-glossary-row > span:first-child { color: var(--ink-black); }
.gm-glossary-row.is-head {
    font-family: var(--font-sans);
    font-size: .7rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gray);
    background: var(--paper-warm);
}
.gm-guide-back {
    display: inline-block;
    margin-top: 1rem;
    font-family: var(--font-sans);
    font-size: .78rem;
    letter-spacing: .06em;
    color: var(--vermillion);
    border-bottom: 1px solid rgba(169, 50, 38, .3);
}

/* ---------- about ---------- */
.gm-about {
    margin-top: clamp(2.6rem, 5vw, 4.4rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--paper-shadow);
}
.gm-about-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: clamp(1.4rem, 2.6vw, 1.9rem);
    color: var(--ink-black);
    margin: 0 0 1.2rem;
}
.gm-about-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.2rem, 3vw, 2.6rem); }
.gm-about-grid p { font-family: var(--font-serif-en-body); font-size: 1.06rem; line-height: 1.75; color: var(--ink-mid); margin: 0; }

/* ---------- nav current marker ---------- */
.nav-links a[aria-current="page"] { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .45); }

/* ---------- chapter 4.3 callout ---------- */
.bg-callout {
    margin: 0 0 1.8rem;
    padding: 1.4rem 1.5rem;
    background: linear-gradient(135deg, #faf3e3 0%, #f6ead2 100%);
    border: 1px solid #e4d2ad;
    border-left: 4px solid var(--vermillion);
    border-radius: var(--radius);
}
.bg-callout-kicker {
    font-family: var(--font-sans);
    font-size: .7rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--vermillion);
    margin: 0 0 .5rem;
}
.bg-callout-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    color: var(--ink-black);
    margin: 0 0 .5rem;
}
.bg-callout p.bg-callout-text {
    font-family: var(--font-serif-en-body);
    font-size: 1.04rem;
    line-height: 1.65;
    color: var(--ink-mid);
    margin: 0 0 1rem;
}
.bg-callout-links { display: flex; flex-wrap: wrap; gap: .6rem; }
.bg-callout-links a {
    font-family: var(--font-sans);
    font-size: .8rem;
    padding: .55rem .9rem;
    border-radius: 3px;
    border: 1px solid var(--vermillion);
    color: var(--vermillion);
    background: #fffdf7;
}
.bg-callout-links a.bg-primary { background: var(--vermillion); color: #fff; }
.bg-callout-links a:hover { opacity: .88; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
    .gm-layout { grid-template-columns: 1fr; }
    .gm-sidebar { flex-direction: row; flex-wrap: wrap; }
    .gm-sidebar > * { flex: 1 1 280px; }
    .gm-guide-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    /* On phones the shared nav has five links plus the brand. Let them wrap
       instead of clipping the new Board Games link off the right edge. */
    .gm-body .nav-inner { flex-wrap: wrap; gap: .35rem; padding: .5rem .9rem .35rem; }
    .gm-body .nav-links { flex-wrap: wrap; gap: .1rem; }
    .gm-body .nav-links a { padding: .3rem .55rem; font-size: .76rem; }
    .gm-body .nav-dropbtn { padding: .3rem .55rem; font-size: .76rem; }
    .gm-hero { padding-top: 9.5rem; }
}
@media (max-width: 640px) {
    .gm-sidebar { flex-direction: column; }
    .gm-sidebar > * { flex: 1 1 auto; }
    .gm-about-grid { grid-template-columns: 1fr; }
    .gm-tab { flex: 1 1 100%; }
    .gm-controls { padding: .8rem; }
    .gm-field { min-width: 120px; }
    .go-board, .xq-board { max-width: 100%; }
    .gm-soundbar { padding: .6rem .75rem; }
    .gm-sound-ctl { gap: .5rem .65rem; }
    .gm-sound-hint { flex: 1 1 100%; order: 3; }
    .gm-volume input[type="range"] { width: 78px; }
    .gm-mini select { max-width: 150px; }
    .gm-guide-body { padding: .95rem; }
    .gm-guide-sum { padding: .85rem .95rem; }
    .gm-glossary-card { padding: 1rem .9rem 1.2rem; }
    .gm-glossary-row { grid-template-columns: 78px minmax(0, 1fr); gap: .1rem .7rem; }
    .gm-glossary-row > span:last-child { grid-column: 2; font-size: .82rem; color: var(--gray); }
    .gm-glossary-row.is-head > span:last-child { display: none; }
}

/* ============================================================
   Four Arts 琴棋书画 + Brief History of the Three Boards 棋史简叙
   ============================================================ */
.gm-arts, .gm-history {
    margin-top: clamp(2.6rem, 5vw, 4.4rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--paper-shadow);
}
.gm-arts-lead, .gm-history-lead {
    font-family: var(--font-serif-en-body);
    font-size: 1.06rem;
    line-height: 1.75;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 0 0 1.1rem;
}
.gm-arts-note {
    font-family: var(--font-serif-en-body);
    font-size: 1.02rem;
    line-height: 1.72;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 0 0 1.6rem;
    padding: .85rem 1.05rem;
    background: var(--paper-warm);
    border-left: 3px solid var(--gold);
    border-radius: 0 var(--radius) var(--radius) 0;
}
.gm-sub-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: 1.2rem;
    line-height: 1.4;
    color: var(--ink-black);
    margin: 1.5rem 0 .85rem;
}
.fa-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .9rem;
}
.fa-card {
    display: grid;
    grid-template-columns: 3.9rem minmax(0, 1fr);
    gap: .95rem;
    align-items: start;
    padding: 1rem 1.1rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.fa-glyph {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 2.05rem;
    line-height: 1.15;
    text-align: center;
    color: var(--vermillion);
    padding-right: .7rem;
    border-right: 1px dashed rgba(169, 50, 38, .28);
}
.fa-name {
    font-family: var(--font-serif-en-body);
    font-size: 1.02rem;
    line-height: 1.4;
    color: var(--ink-black);
    margin: 0 0 .28rem;
}
.fa-desc {
    font-family: var(--font-serif-en-body);
    font-size: .95rem;
    line-height: 1.62;
    color: var(--ink-mid);
    margin: 0;
}
.gm-arts-close {
    font-family: var(--font-serif-en-body);
    font-size: 1.04rem;
    line-height: 1.72;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 1.3rem 0 0;
}
.fa-booklink {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    margin-top: 1.15rem;
    padding: .62rem 1.05rem;
    font-family: var(--font-sans);
    font-size: .82rem;
    line-height: 1.4;
    color: var(--vermillion-deep, #8d2a20);
    background: #fff8f3;
    border: 1px solid rgba(169, 50, 38, .35);
    border-radius: 999px;
    text-decoration: none;
}
.fa-booklink:hover { border-color: var(--vermillion); background: #fff3ea; }

.tr-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
}
.tr-card {
    height: 100%;
    padding: 1.1rem 1.2rem 1.2rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.tr-era {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: .66rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--vermillion);
}
.tr-h {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: 1.32rem;
    line-height: 1.32;
    color: var(--ink-black);
    margin: .4rem 0 .7rem;
}
.tr-card p {
    font-family: var(--font-serif-en-body);
    font-size: .95rem;
    line-height: 1.7;
    color: var(--ink-mid);
    margin: 0 0 .6rem;
}
.tr-card p:last-child { margin-bottom: 0; }
.tr-card a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .3); }
.tr-quote {
    margin: 1.5rem 0 0;
    padding: 1rem 1.2rem;
    background: var(--paper-warm);
    border-left: 3px solid var(--gold);
    border-radius: 0 var(--radius) var(--radius) 0;
}
.tr-quote p {
    font-family: var(--font-serif-en-body);
    font-size: 1.02rem;
    line-height: 1.72;
    color: var(--ink-mid);
    margin: 0 0 .5rem;
}
.tr-quote p:last-child { margin-bottom: 0; color: var(--ink-black); }

@media (max-width: 900px) {
    .tr-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .fa-grid { grid-template-columns: 1fr; }
    .fa-card { grid-template-columns: 3.2rem minmax(0, 1fr); gap: .8rem; }
    .fa-glyph { font-size: 1.75rem; }
}

/* ============================================================
   LiuBo 六博棋 - digital reconstruction and culture
   ============================================================ */
.gm-liubo {
    margin-top: clamp(2.6rem, 5vw, 4.4rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--paper-shadow);
}
.lb-seal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.1rem;
    height: 3.1rem;
    margin: 0 0 1rem;
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 1.35rem;
    line-height: 1;
    color: #fff8f3;
    background: var(--vermillion);
    border-radius: 6px;
    letter-spacing: 0;
}
.lb-lead {
    font-family: var(--font-serif-en-body);
    font-size: 1.06rem;
    line-height: 1.75;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 0 0 1.1rem;
}
.lb-lab {
    margin: 0 0 1.5rem;
    padding: 1rem 1.2rem 1.1rem;
    background: #fff8f3;
    border: 1px solid rgba(169, 50, 38, .22);
    border-left: 3px solid var(--vermillion);
    border-radius: 0 var(--radius) var(--radius) 0;
}
.lb-lab p {
    font-family: var(--font-serif-en-body);
    font-size: 1rem;
    line-height: 1.72;
    color: var(--ink-mid);
    margin: 0 0 .6rem;
}
.lb-lab p:last-child { margin-bottom: 0; }
.lb-lab a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .3); }
.lb-cn {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 1.02rem;
    line-height: 1.95;
    color: var(--ink-mid);
    max-width: 78ch;
    margin: 0 0 1.1rem;
}
.lb-h3 {
    font-family: var(--font-serif-en-body);
    font-weight: 400;
    font-size: 1.16rem;
    line-height: 1.45;
    color: var(--ink-black);
    margin: 1.7rem 0 .8rem;
    padding-bottom: .4rem;
    border-bottom: 1px solid var(--paper-shadow);
}
.lb-h3 .zh { white-space: nowrap; }
.lb-list { margin: 0 0 1.1rem; padding-left: 1.15rem; }
.lb-list li {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--ink-mid);
    margin-bottom: .5rem;
}
.lb-list li strong { color: var(--ink-black); font-weight: 600; }
.lb-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .9rem;
    margin: 0 0 1.2rem;
}
.lb-card {
    padding: 1rem 1.1rem 1.1rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.lb-card-h {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 1.02rem;
    line-height: 1.5;
    color: var(--ink-black);
    margin: 0 0 .45rem;
    padding-bottom: .35rem;
    border-bottom: 1px dashed rgba(169, 50, 38, .25);
}
.lb-card p {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: .95rem;
    line-height: 1.85;
    color: var(--ink-mid);
    margin: 0;
}
.lb-note {
    font-family: var(--font-serif-en-body);
    font-size: .9rem;
    line-height: 1.7;
    color: var(--gray);
    margin: 0 0 1.2rem;
}
.lb-events { margin: 0; padding-left: 1.3rem; }
.lb-events li {
    font-family: var(--font-serif-en-body);
    font-size: .98rem;
    line-height: 1.8;
    color: var(--ink-mid);
    margin-bottom: .7rem;
}
.lb-events li strong { color: var(--ink-black); }
.lb-events li .zh { line-height: 1.9; }
.lb-events a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .3); }
@media (max-width: 900px) {
    .lb-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Xiangqi.com - tournament play and the team behind it
   ============================================================ */
.gm-xqcom {
    margin-top: clamp(2.6rem, 5vw, 4.4rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--paper-shadow);
}
.xq-frame {
    padding: clamp(1.3rem, 3vw, 2.1rem);
    border: 1px solid var(--vermillion);
    border-left: 5px solid var(--vermillion);
    background: rgba(178, 34, 34, .035);
    border-radius: 10px;
}
.xq-frame-label {
    margin: 0 0 .55rem;
    font-family: var(--font-sans);
    font-size: .7rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--vermillion);
}
.xq-frame > .gm-about-h:first-of-type { margin-top: 0; }
.xq-lead {
    font-family: var(--font-serif-en-body);
    font-size: 1.08rem;
    line-height: 1.78;
    color: var(--ink-mid);
    max-width: 80ch;
    margin: 0 0 1rem;
}
.xq-lead-cn {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: 1.02rem;
    line-height: 1.9;
    color: var(--ink-mid);
    margin: 0 0 1.3rem;
}
.xq-cta {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .7rem 1.25rem;
    margin: 0 0 .4rem;
    font-family: var(--font-sans);
    font-size: .86rem;
    letter-spacing: .02em;
    color: #fff8f3;
    background: var(--vermillion);
    border: 1px solid var(--vermillion);
    border-radius: 999px;
    text-decoration: none;
}
.xq-cta:hover { background: var(--vermillion-deep, #8d2a20); border-color: var(--vermillion-deep, #8d2a20); }
.xq-cta-alt {
    display: inline-block;
    margin: 0 0 1.6rem .8rem;
    font-family: var(--font-sans);
    font-size: .8rem;
    color: var(--gray);
}
.xq-team {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
}
.xq-person {
    display: grid;
    grid-template-columns: 2.9rem minmax(0, 1fr);
    gap: .85rem;
    padding: 1rem 1.1rem 1.15rem;
    background: #fffdf7;
    border: 1px solid var(--paper-shadow);
    border-radius: var(--radius);
}
.xq-mono {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.9rem;
    height: 2.9rem;
    font-family: var(--font-serif-en-body);
    font-size: 1.25rem;
    color: var(--vermillion);
    background: #fff8f3;
    border: 1px solid rgba(169, 50, 38, .35);
    border-radius: 50%;
}
.xq-name {
    font-family: var(--font-serif-en-body);
    font-size: 1.04rem;
    line-height: 1.4;
    color: var(--ink-black);
    margin: 0 0 .18rem;
}
.xq-role {
    font-family: var(--font-sans);
    font-size: .68rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--vermillion);
    margin: 0 0 .5rem;
}
.xq-bio {
    font-family: var(--font-serif-en-body);
    font-size: .92rem;
    line-height: 1.66;
    color: var(--ink-mid);
    margin: 0;
}
.xq-bio + .xq-bio { margin-top: .45rem; }
.xq-bio-cn {
    font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    font-size: .94rem;
    line-height: 1.8;
}
.xq-person a { color: var(--vermillion); border-bottom: 1px solid rgba(169, 50, 38, .3); }
.xq-note {
    font-family: var(--font-serif-en-body);
    font-size: .9rem;
    line-height: 1.7;
    color: var(--gray);
    margin: 1.3rem 0 0;
    max-width: 80ch;
}
@media (max-width: 1000px) {
    .xq-team { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
    .xq-team { grid-template-columns: 1fr; }
    .xq-cta-alt { display: block; margin: .5rem 0 1.4rem; }
}