/* =============================================================================
   BA54 — 收容設施科幻視覺系統（self-contained，獨立樣式不依賴共用主題）
   near-black 底 + 異常電光（cyan/violet/magenta）+ 琥珀/紅警示 + 玻璃面板
   + 極淡 CRT 掃描線 + HUD 角標 + 霓虹輝光。圓角 <=8px。
   ============================================================================= */

/* ---------- 最小 reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure {
    margin: 0;
}

ul,
ol {
    padding: 0;
    list-style: none;
}

img,
svg,
canvas {
    display: block;
    max-width: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
}

/* ---------- Design tokens ---------- */
:root {
    --bg: #06080d;
    --bg-1: #0b0f17;
    --bg-2: #10151f;

    --panel: rgba(14, 20, 30, 0.62);
    --panel-line: rgba(120, 160, 200, 0.18);

    --ink: #e7ecf5;
    --ink-2: #9fb0c4;
    --ink-3: #6b7a8d;

    --cyan: #3fd0ff;
    --violet: #9b6cff;
    --magenta: #c46bff;
    --amber: #f5a623;
    --red: #ff4d4d;

    --font-display: "Chakra Petch", "Noto Sans TC", system-ui, sans-serif;
    --font-mono: "Share Tech Mono", "Chakra Petch", ui-monospace, monospace;

    --radius: 6px;
    --radius-sm: 4px;
    --shell-w: min(1180px, calc(100% - 2.4rem));
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --t: 200ms;
}

/* ---------- shell ---------- */
.ba54-shell {
    min-height: 100vh;
    margin: 0;
    background-color: var(--bg);
    background-image:
        radial-gradient(120% 80% at 14% -10%, rgba(63, 208, 255, 0.10), transparent 60%),
        radial-gradient(120% 90% at 92% 0%, rgba(155, 108, 255, 0.10), transparent 55%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-1) 60%, var(--bg) 100%);
    background-attachment: fixed;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0.01em;
    overflow-x: clip;
}

/* 極淡 CRT 掃描線 overlay（全站，pointer-events 關閉，reduced-motion 不動） */
.ba54-shell::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 9000;
    pointer-events: none;
    background-image: repeating-linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.05) 0,
        rgba(255, 255, 255, 0.05) 1px,
        transparent 1px,
        transparent 3px
    );
    opacity: 0.5; /* 與 0.05 線色相乘後 <=0.05 視覺強度 */
    mix-blend-mode: overlay;
}

::selection {
    background: rgba(63, 208, 255, 0.3);
    color: #fff;
}

/* ---------- skip-link ---------- */
.ba54-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 10000;
    padding: 0.65rem 1rem;
    background: var(--bg-2);
    border: 1px solid var(--cyan);
    border-radius: var(--radius-sm);
    color: var(--cyan);
    font-family: var(--font-mono);
    text-decoration: none;
}

.ba54-skip:focus {
    left: 1rem;
    top: 1rem;
}

/* ---------- header ---------- */
.ba54-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    padding: 0.8rem max(1.2rem, calc((100% - 1180px) / 2 + 1.2rem));
    background: rgba(6, 8, 13, 0.72);
    border-bottom: 1px solid var(--panel-line);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.ba54-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.18em;
    text-decoration: none;
}

img.ba54-brand-mark {
    width: 2.1rem;
    height: 2.1rem;
    object-fit: contain;
    filter: drop-shadow(0 0 6px rgba(63, 208, 255, 0.35));
}

.ba54-brand span {
    text-shadow: 0 0 18px rgba(63, 208, 255, 0.35);
}

.ba54-nav {
    display: flex;
    align-items: center;
    gap: 0.4rem 1.1rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.ba54-nav a {
    position: relative;
    padding: 0.35rem 0.2rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    text-decoration: none;
    transition: color var(--t) var(--ease);
}

.ba54-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    background: var(--cyan);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t) var(--ease);
}

.ba54-nav a:hover,
.ba54-nav a:focus-visible {
    color: var(--cyan);
}

.ba54-nav a:hover::after,
.ba54-nav a:focus-visible::after {
    transform: scaleX(1);
}

/* Ko-fi 鈕：異常輝光主色 */
.ba54-kofi {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(63, 208, 255, 0.55);
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.18), rgba(155, 108, 255, 0.18));
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 0 0 0 rgba(63, 208, 255, 0.4);
    transition: box-shadow var(--t) var(--ease), background var(--t) var(--ease),
        color var(--t) var(--ease);
}

.ba54-kofi:hover,
.ba54-kofi:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.34), rgba(155, 108, 255, 0.34));
    box-shadow: 0 0 20px rgba(63, 208, 255, 0.45);
}

/* ---------- main ---------- */
.ba54-main {
    width: var(--shell-w);
    margin: 0 auto;
    padding: 2.5rem 0 4rem;
}

/* Django messages */
.ba54-messages {
    display: grid;
    gap: 0.6rem;
    margin: 0 0 2rem;
}

.ba54-message {
    margin: 0;
    padding: 0.85rem 1.1rem;
    border: 1px solid var(--panel-line);
    border-left: 4px solid var(--cyan);
    border-radius: var(--radius-sm);
    background: var(--panel);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.92rem;
}

.ba54-message-success {
    border-left-color: var(--cyan);
}

.ba54-message-warning {
    border-left-color: var(--amber);
}

.ba54-message-error {
    border-left-color: var(--red);
}

/* ---------- 共用元件 ---------- */
.ba54-kicker {
    margin: 0 0 0.8rem;
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

/* HUD 玻璃面板 + 角標 */
.ba54-panel {
    position: relative;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius);
    background: var(--panel);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.ba54-panel::before,
.ba54-panel::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border: 1px solid var(--cyan);
    opacity: 0.55;
    pointer-events: none;
}

.ba54-panel::before {
    top: 8px;
    left: 8px;
    border-right: 0;
    border-bottom: 0;
}

.ba54-panel::after {
    right: 8px;
    bottom: 8px;
    border-left: 0;
    border-top: 0;
}

.ba54-page-header {
    margin-bottom: 2rem;
    padding: clamp(1.6rem, 4vw, 2.8rem);
}

.ba54-page-header h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.2rem, 6vw, 3.6rem);
    line-height: 1.05;
    letter-spacing: 0.02em;
    text-shadow: 0 0 30px rgba(63, 208, 255, 0.25);
}

.ba54-page-header p {
    max-width: 52ch;
    margin-top: 1rem;
    color: var(--ink-2);
    font-size: 1.05rem;
}

.ba54-section {
    margin-bottom: 2rem;
    padding: clamp(1.6rem, 4vw, 2.8rem);
}

.ba54-section-heading {
    margin-bottom: 1.8rem;
}

.ba54-section h2,
.ba54-section-heading h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.5rem, 3.4vw, 2.4rem);
    line-height: 1.15;
    letter-spacing: 0.01em;
}

/* 按鈕 */
.ba54-button {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 2.9rem;
    padding: 0.7rem 1.3rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: rgba(20, 28, 40, 0.6);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.86rem;
    letter-spacing: 0.08em;
    text-decoration: none;
    transition: border-color var(--t) var(--ease), color var(--t) var(--ease),
        box-shadow var(--t) var(--ease), background var(--t) var(--ease);
}

.ba54-button:hover,
.ba54-button:focus-visible {
    border-color: var(--cyan);
    color: var(--cyan);
    box-shadow: 0 0 18px rgba(63, 208, 255, 0.25);
}

.ba54-button-primary {
    border-color: rgba(63, 208, 255, 0.6);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.2), rgba(155, 108, 255, 0.2));
    color: #fff;
}

.ba54-button-primary:hover,
.ba54-button-primary:focus-visible {
    color: #fff;
    box-shadow: 0 0 26px rgba(63, 208, 255, 0.45);
}

.ba54-button-kofi {
    border-color: rgba(155, 108, 255, 0.6);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.22), rgba(196, 107, 255, 0.22));
    color: #fff;
}

.ba54-button-kofi:hover,
.ba54-button-kofi:focus-visible {
    color: #fff;
    box-shadow: 0 0 26px rgba(155, 108, 255, 0.45);
}

/* Steam 願望清單:轉換出口,視覺權重要壓過其他 CTA。 */
.ba54-button-steam {
    border-color: rgba(102, 192, 244, 0.75);
    background: linear-gradient(135deg, rgba(23, 26, 33, 0.95), rgba(27, 40, 56, 0.95));
    color: #c7d5e0;
    font-weight: 600;
}

.ba54-button-steam:hover,
.ba54-button-steam:focus-visible {
    color: #fff;
    box-shadow: 0 0 26px rgba(102, 192, 244, 0.5);
}

/* Steam 三態:商店頁還沒上架時的狀態列(不搶主 CTA 的視覺權重)。 */
.ba54-steam-status {
    margin: 1.1rem 0 0;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
}

.ba54-steam-status a {
    color: var(--cyan);
}

.ba54-steam-status-dot {
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    margin-right: 0.55em;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 8px rgba(63, 208, 255, 0.8);
    vertical-align: 0.08em;
}

/* 頁尾與新聞資料袋的「準備中」狀態文字。 */
.ba54-footer-steam-status,
.ba54-press-steam-status {
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
}

/* ---------- 統一焦點環 ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.ba54-button:focus-visible,
.ba54-kofi:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(63, 208, 255, 0.25);
}

/* =============================================================================
   LANDING — cinematic scroll
   ============================================================================= */
.ba54-landing {
    width: 100%;
    margin: 0;
    padding: 0;
}

/* 每一段 reveal（IntersectionObserver 加上 .is-in） */
.ba54-beat {
    opacity: 1;
    transform: none;
}

.ba54-anim .ba54-beat {
    opacity: 0;
    transform: translateY(34px);
    transition: opacity 700ms var(--ease), transform 700ms var(--ease);
    will-change: opacity, transform;
}

.ba54-anim .ba54-beat.is-in {
    opacity: 1;
    transform: none;
}

/* ---- Hero ---- */
.ba54-hero {
    position: relative;
    min-height: 100svh;
    display: grid;
    place-items: center;
    padding: clamp(5rem, 12vh, 9rem) var(--shell-w-pad, 1.2rem) clamp(3rem, 8vh, 6rem);
    overflow: hidden;
    isolation: isolate;
}

.ba54-hero-bg {
    position: absolute;
    inset: -8% 0 0;
    z-index: -3;
    background-color: var(--bg);
    background-image: url("../img/hero-containment.9c5d249cb41b.jpg");
    background-size: cover;
    background-position: center 30%;
    background-repeat: no-repeat;
    will-change: transform;
}

.ba54-hero-scrim {
    position: absolute;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(120% 80% at 50% 18%, transparent 0%, rgba(6, 8, 13, 0.55) 70%),
        linear-gradient(180deg, rgba(6, 8, 13, 0.55) 0%, rgba(6, 8, 13, 0.78) 55%, var(--bg) 100%);
}

.ba54-hero-canvas {
    position: absolute;
    inset: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.ba54-hero-inner {
    position: relative;
    width: var(--shell-w);
    max-width: 1180px;
}

.ba54-hud-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1.2rem;
    margin-bottom: 1.4rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.18em;
}

.ba54-hud-tags span {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.ba54-hud-tags span::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--amber);
    box-shadow: 0 0 8px var(--amber);
}

.ba54-hud-tags span.is-alert::before {
    background: var(--red);
    box-shadow: 0 0 8px var(--red);
}

.ba54-hero-mark {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4.5rem, 22vw, 13rem);
    line-height: 0.86;
    letter-spacing: 0.04em;
    color: #fff;
    text-shadow: 0 0 40px rgba(63, 208, 255, 0.45), 0 0 90px rgba(155, 108, 255, 0.3);
}

.ba54-hero-sub {
    max-width: 40ch;
    margin: 1.2rem 0 0;
    color: var(--ink);
    font-size: clamp(1.05rem, 2.4vw, 1.5rem);
    letter-spacing: 0.04em;
}

.ba54-hero-tagline {
    max-width: 50ch;
    margin: 0.9rem 0 0;
    color: var(--ink-2);
    font-size: clamp(0.98rem, 2vw, 1.18rem);
    line-height: 1.7;
}

.ba54-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 2rem;
}

.ba54-scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 1.6rem;
    transform: translateX(-50%);
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-align: center;
}

.ba54-scroll-cue span {
    display: block;
    width: 1px;
    height: 30px;
    margin: 0.5rem auto 0;
    background: linear-gradient(var(--cyan), transparent);
    animation: ba54-cue 1.8s var(--ease) infinite;
}

@keyframes ba54-cue {
    0% {
        transform: translateY(-6px);
        opacity: 0;
    }
    40% {
        opacity: 1;
    }
    100% {
        transform: translateY(10px);
        opacity: 0;
    }
}

/* ---- landing 通用區段容器 ---- */
.ba54-landing-section {
    width: var(--shell-w);
    margin: 0 auto;
    padding: clamp(4rem, 12vh, 8rem) 0;
}

.ba54-landing-section > .ba54-kicker {
    text-align: center;
}

.ba54-landing-section > h2 {
    max-width: 22ch;
    margin: 0 auto 0.8rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 5vw, 3.2rem);
    line-height: 1.1;
    text-align: center;
}

.ba54-landing-section > .ba54-section-lede {
    max-width: 54ch;
    margin: 0 auto;
    color: var(--ink-2);
    font-size: 1.06rem;
    text-align: center;
}

/* ---- Pillars ---- */
.ba54-pillar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: 1.1rem;
    margin-top: 2.6rem;
}

.ba54-pillar {
    padding: 1.6rem 1.4rem;
}

.ba54-pillar-index {
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.18em;
}

.ba54-pillar-en {
    margin-top: 0.6rem;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.ba54-pillar h3 {
    margin: 0.2rem 0 0.6rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.35rem;
}

.ba54-pillar p {
    color: var(--ink-2);
    font-size: 0.96rem;
    line-height: 1.7;
}

.ba54-pillar-anomaly {
    border-color: rgba(155, 108, 255, 0.4);
    background: linear-gradient(180deg, rgba(155, 108, 255, 0.12), var(--panel));
}

.ba54-pillar-anomaly .ba54-pillar-index,
.ba54-pillar-anomaly .ba54-pillar-en {
    color: var(--magenta);
}

.ba54-pillar-anomaly::before,
.ba54-pillar-anomaly::after {
    border-color: var(--magenta);
}

/* ---- Anomaly 敘事段（視差/縮放層由 JS 控制） ---- */
.ba54-anomaly {
    position: relative;
    margin: 0;
    padding: clamp(5rem, 16vh, 10rem) 0;
    overflow: hidden;
}

.ba54-anomaly-field {
    position: absolute;
    inset: -10% -5%;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(50% 60% at 50% 50%, rgba(155, 108, 255, 0.3), transparent 70%),
        radial-gradient(60% 70% at 30% 40%, rgba(63, 208, 255, 0.18), transparent 70%),
        radial-gradient(40% 50% at 72% 64%, rgba(196, 107, 255, 0.18), transparent 70%);
    will-change: transform;
}

.ba54-anomaly-inner {
    position: relative;
    z-index: 1;
    width: var(--shell-w);
    margin: 0 auto;
    max-width: 720px;
    text-align: center;
}

.ba54-anomaly-inner h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 6vw, 3.6rem);
    line-height: 1.1;
    text-shadow: 0 0 40px rgba(155, 108, 255, 0.4);
}

.ba54-anomaly-inner p {
    margin-top: 1.2rem;
    color: var(--ink);
    font-size: clamp(1rem, 2.2vw, 1.22rem);
    line-height: 1.8;
}

.ba54-anomaly-readout {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.4rem;
    justify-content: center;
    margin-top: 2rem;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.16em;
}

.ba54-anomaly-readout b {
    color: var(--cyan);
    font-weight: 400;
}

/* ---- Community 預告段 ---- */
.ba54-teaser {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
    margin-top: 2.6rem;
    padding: clamp(1.8rem, 5vw, 3rem);
}

.ba54-teaser h3 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
}

.ba54-teaser p {
    margin-top: 0.9rem;
    color: var(--ink-2);
    font-size: 1.02rem;
    line-height: 1.75;
}

.ba54-teaser-side {
    display: grid;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--ink-2);
}

.ba54-teaser-side span {
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--panel-line);
    border-left: 3px solid var(--cyan);
    border-radius: var(--radius-sm);
    background: rgba(11, 15, 23, 0.5);
    letter-spacing: 0.06em;
}

/* ---- Support / Ko-fi CTA 段 ---- */
.ba54-kofi-cta {
    display: grid;
    gap: 1.6rem;
    align-items: center;
    margin-top: 2.6rem;
    padding: clamp(2rem, 6vw, 3.4rem);
    text-align: center;
    border-color: rgba(155, 108, 255, 0.32);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.1), rgba(155, 108, 255, 0.12));
}

.ba54-kofi-cta h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 5vw, 2.8rem);
}

.ba54-kofi-cta p {
    max-width: 52ch;
    margin: 0 auto;
    color: var(--ink-2);
    font-size: 1.04rem;
    line-height: 1.75;
}

.ba54-kofi-cta .ba54-button-kofi {
    justify-self: center;
}

/* =============================================================================
   COMMUNITY
   ============================================================================= */
.ba54-community-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 1.6rem;
}

.ba54-community-form-card,
.ba54-community-feed {
    padding: clamp(1.5rem, 4vw, 2.4rem);
}

.ba54-community-form-card h2,
.ba54-community-feed h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.4rem;
    margin-bottom: 1.1rem;
}

.ba54-community-rules {
    display: grid;
    gap: 0.5rem;
    margin-bottom: 1.6rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--panel-line);
    border-left: 3px solid var(--amber);
    border-radius: var(--radius-sm);
    background: rgba(11, 15, 23, 0.4);
}

.ba54-community-rules li {
    position: relative;
    padding-left: 1.2rem;
    color: var(--ink-2);
    font-size: 0.92rem;
    line-height: 1.6;
}

.ba54-community-rules li::before {
    content: "//";
    position: absolute;
    left: 0;
    color: var(--cyan);
    font-family: var(--font-mono);
}

.ba54-community-form {
    display: grid;
    gap: 1.2rem;
}

.ba54-field-row {
    display: grid;
    gap: 0.45rem;
}

.ba54-field-row label {
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
}

.ba54-field-req {
    color: var(--red);
}

/* 表單欄位（forms.py 給的 .ba54-field class） */
.ba54-field {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: rgba(8, 11, 17, 0.7);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 0.98rem;
    transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.ba54-field::placeholder {
    color: var(--ink-3);
}

textarea.ba54-field {
    resize: vertical;
    line-height: 1.6;
}

.ba54-field:focus {
    border-color: var(--cyan);
    outline: none;
    box-shadow: 0 0 0 3px rgba(63, 208, 255, 0.22);
}

/* 原生檔案輸入的「選擇檔案」鈕：預設淺色，改成貼齊深色/青的主題。 */
.ba54-field::file-selector-button,
.ba54-field::-webkit-file-upload-button {
    margin: -0.7rem 0.85rem -0.7rem -0.85rem;
    padding: 0.7rem 0.9rem;
    border: 0;
    border-right: 1px solid var(--panel-line);
    border-radius: 0;
    background: rgba(63, 208, 255, 0.12);
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.ba54-field::file-selector-button:hover,
.ba54-field::-webkit-file-upload-button:hover {
    background: rgba(63, 208, 255, 0.22);
    color: var(--ink);
}

.ba54-field-help {
    color: var(--ink-3);
    font-size: 0.8rem;
}

.ba54-field-error,
.ba54-form-errors {
    color: var(--red);
    font-size: 0.84rem;
    font-family: var(--font-mono);
}

.ba54-form-errors {
    padding: 0.7rem 0.9rem;
    border: 1px solid rgba(255, 77, 77, 0.4);
    border-left: 4px solid var(--red);
    border-radius: var(--radius-sm);
    background: rgba(255, 77, 77, 0.08);
}

/* honeypot：對真人與螢幕閱讀器都隱藏 */
.ba54-hp {
    position: absolute !important;
    left: -9999px !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* 公開貼文牆 */
.ba54-community-board {
    display: grid;
    gap: 1rem;
}

.ba54-community-post {
    padding: 1.3rem 1.4rem;
}

.ba54-community-post-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.8rem;
}

.ba54-community-author {
    color: var(--ink);
    font-family: var(--font-mono);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.ba54-community-kind {
    padding: 0.15rem 0.55rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.ba54-community-kind-report {
    border-color: rgba(245, 166, 35, 0.5);
    color: var(--amber);
}

.ba54-community-kind-suggestion {
    border-color: rgba(63, 208, 255, 0.5);
    color: var(--cyan);
}

.ba54-community-time {
    margin-left: auto;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.ba54-community-body {
    color: var(--ink);
    line-height: 1.75;
}

.ba54-community-body p {
    margin: 0 0 0.6rem;
}

.ba54-community-figure {
    margin: 0.9rem 0 0;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: var(--bg-2);
    overflow: hidden;
}

.ba54-community-figure img {
    width: 100%;
    max-height: 28rem;
    object-fit: contain;
}

.ba54-community-empty {
    padding: 2.4rem 1.2rem;
    border: 1px dashed var(--panel-line);
    border-radius: var(--radius-sm);
    color: var(--ink-2);
    font-family: var(--font-mono);
    text-align: center;
}

/* =============================================================================
   MODERATION
   ============================================================================= */
.ba54-moderation-board {
    display: grid;
    gap: 0.9rem;
}

.ba54-moderation-row {
    display: grid;
    gap: 0.9rem;
    padding: 1.2rem 1.3rem;
    border-left: 4px solid var(--ink-3);
}

.ba54-moderation-row-pending {
    border-left-color: var(--amber);
}

.ba54-moderation-row-published {
    border-left-color: var(--cyan);
}

.ba54-moderation-row-hidden {
    border-left-color: var(--red);
    opacity: 0.78;
}

.ba54-moderation-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.6rem;
}

.ba54-moderation-status {
    padding: 0.15rem 0.55rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
}

.ba54-moderation-status-pending {
    border: 1px solid rgba(245, 166, 35, 0.5);
    color: var(--amber);
}

.ba54-moderation-status-published {
    border: 1px solid rgba(63, 208, 255, 0.5);
    color: var(--cyan);
}

.ba54-moderation-status-hidden {
    border: 1px solid rgba(255, 77, 77, 0.5);
    color: var(--red);
}

.ba54-moderation-author {
    color: var(--ink);
    font-family: var(--font-mono);
}

.ba54-moderation-content {
    display: flex;
    gap: 1rem;
}

.ba54-moderation-thumb {
    flex: 0 0 auto;
    width: 5rem;
    height: 5rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: var(--bg-2);
    overflow: hidden;
}

.ba54-moderation-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ba54-moderation-excerpt {
    margin: 0;
    color: var(--ink-2);
    line-height: 1.65;
}

.ba54-moderation-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.ba54-moderation-actions form {
    margin: 0;
}

.ba54-mod-btn {
    min-height: 2.5rem;
    padding: 0.45rem 1rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: rgba(20, 28, 40, 0.6);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    transition: border-color var(--t) var(--ease), color var(--t) var(--ease),
        box-shadow var(--t) var(--ease);
}

.ba54-mod-btn:hover,
.ba54-mod-btn:focus-visible {
    box-shadow: 0 0 16px rgba(63, 208, 255, 0.25);
}

.ba54-mod-btn-publish {
    border-color: rgba(63, 208, 255, 0.55);
    color: var(--cyan);
}

.ba54-mod-btn-hide {
    border-color: rgba(245, 166, 35, 0.55);
    color: var(--amber);
}

.ba54-mod-btn-delete {
    border-color: rgba(255, 77, 77, 0.55);
    color: var(--red);
}

/* 使用者列管理 reason 輸入 */
.ba54-moderation-user .ba54-moderation-actions {
    align-items: center;
}

.ba54-user-action {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    margin: 0;
}

.ba54-reason-input {
    width: auto;
    min-width: 12rem;
    flex: 1 1 12rem;
    padding: 0.45rem 0.7rem;
    font-size: 0.84rem;
}

.ba54-moderation-reason {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.04em;
}

/* =============================================================================
   COMMUNITY — IG 風 feed（v3 擴充：頭像 / 貼文卡 / 愛心 / 留言 / 管理 popover）
   ============================================================================= */
.ba54-feed-layout {
    display: grid;
    gap: 1.4rem;
    max-width: 640px;
    margin: 0 auto;
}

/* ---------- 頭像 ---------- */
.ba54-avatar {
    flex: 0 0 auto;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    border: 1px solid var(--panel-line);
    object-fit: cover;
    background: var(--bg-2);
}

.ba54-avatar-sm {
    width: 2rem;
    height: 2rem;
}

.ba54-avatar-initials {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-color: rgba(63, 208, 255, 0.45);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.55), rgba(155, 108, 255, 0.55));
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1;
    text-transform: uppercase;
    box-shadow: 0 0 12px rgba(63, 208, 255, 0.28);
}

.ba54-avatar-sm.ba54-avatar-initials {
    font-size: 0.82rem;
}

/* ---------- 頂部 composer ---------- */
.ba54-composer {
    padding: clamp(1.2rem, 4vw, 1.8rem);
}

.ba54-composer-title {
    margin-bottom: 1rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
}

.ba54-composer-form {
    display: grid;
    gap: 1rem;
}

.ba54-composer-locked {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.9rem 1.2rem;
}

.ba54-composer-lock-text {
    margin: 0;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.92rem;
    letter-spacing: 0.04em;
}

/* ---------- 貼文卡（IG 風玻璃卡） ---------- */
.ba54-feed {
    display: grid;
    gap: 1.4rem;
}

.ba54-post {
    padding: 0;
    overflow: hidden;
}

.ba54-post-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.2rem 0.8rem;
}

.ba54-post-id {
    display: grid;
    gap: 0.1rem;
    min-width: 0;
}

.ba54-post-author {
    color: var(--ink);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.94rem;
    letter-spacing: 0.04em;
    word-break: break-word;
}

.ba54-post-time {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.04em;
}

.ba54-post-kind {
    margin-left: auto;
    padding: 0.15rem 0.55rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
}

.ba54-post-figure {
    margin: 0;
    border-top: 1px solid var(--panel-line);
    border-bottom: 1px solid var(--panel-line);
    background: #04060a;
}

.ba54-post-figure img {
    width: 100%;
    max-height: 32rem;
    object-fit: contain;
}

.ba54-post-body {
    padding: 0.9rem 1.2rem 0;
    color: var(--ink);
    line-height: 1.75;
    overflow-wrap: anywhere;
}

.ba54-post-body p {
    margin: 0 0 0.6rem;
}

/* ---------- action bar：愛心 + 留言數 ---------- */
.ba54-post-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 0.85rem 1.2rem;
}

.ba54-like-form {
    margin: 0;
}

.ba54-like-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 2.4rem;
    padding: 0.4rem 0.95rem;
    border: 1px solid var(--panel-line);
    border-radius: 999px;
    background: rgba(20, 28, 40, 0.55);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.86rem;
    letter-spacing: 0.04em;
    transition: color var(--t) var(--ease), border-color var(--t) var(--ease),
        background var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.ba54-like-glyph {
    font-size: 1.05rem;
    line-height: 1;
    transition: transform var(--t) var(--ease);
}

.ba54-like-btn:hover,
.ba54-like-btn:focus-visible {
    color: var(--magenta);
    border-color: rgba(196, 107, 255, 0.55);
    box-shadow: 0 0 16px rgba(196, 107, 255, 0.25);
}

.ba54-like-btn:hover .ba54-like-glyph {
    transform: scale(1.12);
}

.ba54-like-btn.is-liked {
    color: #fff;
    border-color: rgba(255, 77, 77, 0.7);
    background: linear-gradient(135deg, rgba(255, 77, 77, 0.85), rgba(196, 107, 255, 0.85));
    box-shadow: 0 0 18px rgba(255, 77, 77, 0.4);
}

.ba54-comment-jump {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    text-decoration: none;
    transition: color var(--t) var(--ease);
}

.ba54-comment-jump:hover,
.ba54-comment-jump:focus-visible {
    color: var(--cyan);
}

/* ---------- 留言區 ---------- */
.ba54-comments {
    display: grid;
    gap: 0.9rem;
    padding: 0.4rem 1.2rem 1.2rem;
    border-top: 1px solid var(--panel-line);
}

.ba54-comment {
    display: flex;
    gap: 0.65rem;
    padding-top: 0.8rem;
}

.ba54-comment-main {
    min-width: 0;
    flex: 1 1 auto;
}

.ba54-comment-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem;
    margin: 0 0 0.2rem;
}

.ba54-comment-author {
    color: var(--ink);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.84rem;
    letter-spacing: 0.04em;
}

.ba54-comment-body {
    color: var(--ink-2);
    font-size: 0.94rem;
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.ba54-comment-body p {
    margin: 0 0 0.4rem;
}

.ba54-comment-figure {
    margin: 0.5rem 0 0;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: var(--bg-2);
    overflow: hidden;
}

.ba54-comment-figure img {
    width: 100%;
    max-height: 18rem;
    object-fit: contain;
}

.ba54-comment-mod {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.ba54-comment-mod form {
    margin: 0;
}

.ba54-comment-form {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.4rem;
    padding-top: 0.9rem;
    border-top: 1px dashed var(--panel-line);
}

.ba54-comment-submit {
    justify-self: start;
}

/* ---------- staff 管理 HUD popover ---------- */
.ba54-modmenu {
    position: relative;
    margin-left: 0.5rem;
}

.ba54-modmenu-toggle {
    min-height: 2.1rem;
    padding: 0.3rem 0.7rem;
    border: 1px solid rgba(245, 166, 35, 0.5);
    border-radius: var(--radius-sm);
    background: rgba(20, 28, 40, 0.6);
    color: var(--amber);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    transition: box-shadow var(--t) var(--ease), color var(--t) var(--ease);
}

.ba54-modmenu-toggle:hover,
.ba54-modmenu-toggle:focus-visible {
    color: #fff;
    box-shadow: 0 0 16px rgba(245, 166, 35, 0.3);
}

.ba54-modmenu-pop {
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 0;
    z-index: 50;
    display: grid;
    gap: 0.4rem;
    min-width: 11rem;
    padding: 0.8rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius);
    background: rgba(10, 14, 22, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(63, 208, 255, 0.12);
}

.ba54-modmenu-pop[hidden] {
    display: none;
}

.ba54-modmenu-pop form {
    margin: 0;
}

.ba54-modmenu-pop .ba54-mod-btn {
    width: 100%;
    justify-content: center;
    min-height: 2.3rem;
}

.ba54-modmenu-label {
    margin: 0.3rem 0 0;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.ba54-modmenu-label:first-child {
    margin-top: 0;
}

/* =============================================================================
   CODEX — 公開 gallery + 詳情 + staff 編輯
   ============================================================================= */
.ba54-codex-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
    gap: 1.1rem;
}

.ba54-codex-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;
    color: inherit;
    text-decoration: none;
    transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease),
        transform var(--t) var(--ease);
}

.ba54-codex-card:hover,
.ba54-codex-card:focus-visible {
    border-color: rgba(63, 208, 255, 0.55);
    box-shadow: 0 0 22px rgba(63, 208, 255, 0.22);
    transform: translateY(-2px);
}

.ba54-codex-thumb {
    display: block;
    aspect-ratio: 4 / 3;
    border-bottom: 1px solid var(--panel-line);
    background: #04060a;
    overflow: hidden;
}

.ba54-codex-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ba54-codex-thumb-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
}

.ba54-codex-card-body {
    display: grid;
    gap: 0.35rem;
    padding: 1rem 1.1rem 1.2rem;
}

.ba54-codex-category {
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.ba54-codex-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    line-height: 1.25;
}

.ba54-codex-desc {
    color: var(--ink-2);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ---- detail ---- */
.ba54-codex-detail {
    display: grid;
    gap: 1.4rem;
}

.ba54-codex-detail-category {
    margin-top: 0.6rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.88rem;
    letter-spacing: 0.06em;
}

.ba54-codex-detail-figure {
    margin: 0;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: #04060a;
    overflow: hidden;
}

.ba54-codex-detail-figure img {
    width: 100%;
    max-height: 34rem;
    object-fit: contain;
}

.ba54-codex-detail-desc {
    color: var(--ink);
    line-height: 1.8;
}

.ba54-codex-detail-desc p {
    margin: 0 0 0.7rem;
}

.ba54-codex-detail-empty {
    color: var(--ink-3);
    font-family: var(--font-mono);
}

.ba54-codex-source {
    margin: 0;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--panel-line);
    border-left: 3px solid var(--violet);
    border-radius: var(--radius-sm);
    background: rgba(155, 108, 255, 0.08);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
}

.ba54-codex-back {
    margin: 0;
}

/* ---- staff 編輯 ---- */
.ba54-codex-edit {
    display: grid;
    gap: 1.4rem;
}

.ba54-codex-edit-current {
    margin: 0;
    max-width: 18rem;
}

.ba54-codex-edit-current img {
    width: 100%;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: var(--bg-2);
}

.ba54-codex-edit-form {
    gap: 1.1rem;
}

.ba54-codex-edit-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

/* =============================================================================
   SUPPORT / PLAYTEST / DEVLOG 內容
   ============================================================================= */
.ba54-notice {
    border-color: rgba(245, 166, 35, 0.32);
    background: linear-gradient(180deg, rgba(245, 166, 35, 0.08), var(--panel));
}

.ba54-notice h2 {
    color: var(--ink);
}

.ba54-notice ul {
    display: grid;
    gap: 0.7rem;
    margin-top: 1.2rem;
}

.ba54-notice li {
    position: relative;
    padding-left: 1.6rem;
    color: var(--ink);
    line-height: 1.7;
}

.ba54-notice li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--amber);
}

.ba54-card-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: 1.1rem;
    margin-top: 1.6rem;
}

.ba54-card-list article {
    padding: 1.5rem 1.4rem;
}

.ba54-card-list h2,
.ba54-card-list h3 {
    margin-bottom: 0.6rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
}

.ba54-card-list p {
    color: var(--ink-2);
    line-height: 1.7;
}

/* Support / Ko-fi 區 */
.ba54-support-kofi {
    display: grid;
    gap: 1.4rem;
    align-items: center;
    padding: clamp(1.8rem, 5vw, 2.8rem);
    text-align: center;
    border-color: rgba(155, 108, 255, 0.32);
    background: linear-gradient(135deg, rgba(63, 208, 255, 0.1), rgba(155, 108, 255, 0.12));
}

.ba54-support-kofi h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.6rem, 4vw, 2.2rem);
}

.ba54-support-kofi p {
    max-width: 50ch;
    margin: 0 auto;
    color: var(--ink-2);
    line-height: 1.75;
}

.ba54-support-kofi .ba54-button-kofi {
    justify-self: center;
}

/* Devlog / Field Log */
.ba54-log {
    display: grid;
    gap: 1.2rem;
}

.ba54-log-entry {
    padding: 1.6rem 1.6rem;
    border-left: 4px solid var(--cyan);
}

.ba54-log-entry-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.6rem 1.2rem;
    margin-bottom: 0.9rem;
}

.ba54-log-date {
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.1em;
}

.ba54-log-tag {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ba54-log-entry h2 {
    margin-bottom: 0.6rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.3rem;
}

/* 列表標題連到單篇永久連結:平常不畫底線,hover 時再提示可點。 */
.ba54-log-entry h2 a {
    text-decoration: none;
}

.ba54-log-entry h2 a:hover,
.ba54-log-entry h2 a:focus-visible {
    color: var(--cyan);
    text-decoration: underline;
}

.ba54-log-entry p {
    color: var(--ink-2);
    line-height: 1.8;
}

.ba54-log-entry p + p {
    margin-top: 0.7rem;
}

.ba54-log-sign {
    margin-top: 1rem;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.ba54-footer {
    width: var(--shell-w);
    margin: 0 auto;
    padding: 2.5rem 0 3rem;
    border-top: 1px solid var(--panel-line);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
}

.ba54-footer-identity {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.84rem;
    letter-spacing: 0.08em;
}

.ba54-footer-identity img {
    width: 1.7rem;
    height: 1.7rem;
    object-fit: contain;
    opacity: 0.85;
}

.ba54-footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem 1.2rem;
}

.ba54-footer-links a {
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-decoration: none;
    transition: color var(--t) var(--ease);
}

.ba54-footer-links a:hover,
.ba54-footer-links a:focus-visible {
    color: var(--cyan);
}

/* =============================================================================
   RWD
   ============================================================================= */
@media (max-width: 1024px) {
    .ba54-teaser {
        grid-template-columns: 1fr;
        gap: 1.4rem;
    }
}

@media (max-width: 768px) {
    .ba54-community-layout {
        grid-template-columns: 1fr;
    }

    .ba54-moderation-content {
        flex-direction: column;
    }

    .ba54-codex-grid {
        grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
    }
}

@media (max-width: 480px) {
    .ba54-post-head {
        flex-wrap: wrap;
    }

    .ba54-post-kind {
        margin-left: 0;
        order: 3;
    }

    .ba54-modmenu {
        margin-left: auto;
    }

    .ba54-modmenu-pop {
        right: auto;
        left: 0;
    }

    .ba54-comment-mod {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .ba54-codex-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .ba54-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.7rem;
    }

    .ba54-nav {
        justify-content: flex-start;
    }

    .ba54-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .ba54-actions .ba54-button {
        justify-content: center;
    }
}

/* =============================================================================
   設計檔案室(staff-only wiki):樹狀清單 + 文件 prose 容器
   沿用既有 tokens / focus-visible / RWD / reduced-motion。
   ============================================================================= */

/* ---------- 友善提示(root 不存在 / 空) ---------- */
.ba54-doc-notice {
    padding: 1.4rem 1.6rem;
}

.ba54-doc-notice-title {
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    letter-spacing: 0.06em;
    color: var(--amber);
}

.ba54-doc-notice code {
    padding: 0.05rem 0.35rem;
    border-radius: var(--radius-sm);
    background: var(--bg-2);
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--cyan);
}

/* ---------- 樹狀清單 ---------- */
.ba54-doctree-panel {
    padding: 1.2rem 1.4rem;
}

.ba54-doctree {
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: var(--font-mono);
    font-size: 0.92rem;
}

.ba54-doctree .ba54-doctree {
    margin-left: 1.1rem;
    padding-left: 0.6rem;
    border-left: 1px solid var(--panel-line);
}

.ba54-doctree-item {
    margin: 0.15rem 0;
}

.ba54-doctree-folder > summary {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.4rem;
    border-radius: var(--radius-sm);
    color: var(--ink-2);
    cursor: pointer;
    list-style: none;
}

.ba54-doctree-folder > summary::-webkit-details-marker {
    display: none;
}

.ba54-doctree-folder > summary:hover,
.ba54-doctree-folder > summary:focus-visible {
    color: var(--cyan);
    background: rgba(63, 208, 255, 0.08);
}

.ba54-doctree-folder[open] > summary .ba54-doctree-icon {
    transform: rotate(90deg);
}

.ba54-doctree-folder > summary .ba54-doctree-icon {
    display: inline-block;
    transition: transform var(--t) var(--ease);
    color: var(--violet);
}

.ba54-doctree-file {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.4rem;
    border-radius: var(--radius-sm);
    color: var(--ink);
    text-decoration: none;
}

.ba54-doctree-file .ba54-doctree-icon {
    color: var(--ink-3);
}

.ba54-doctree-file:hover,
.ba54-doctree-file:focus-visible {
    color: var(--cyan);
    background: rgba(63, 208, 255, 0.08);
}

/* ---------- 麵包屑 ---------- */
.ba54-doc-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.3rem 0.45rem;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--ink-3);
}

.ba54-doc-breadcrumb a {
    color: var(--ink-2);
    text-decoration: none;
}

.ba54-doc-breadcrumb a:hover,
.ba54-doc-breadcrumb a:focus-visible {
    color: var(--cyan);
}

.ba54-doc-breadcrumb-current {
    color: var(--cyan);
}

.ba54-doc-breadcrumb-sep {
    color: var(--ink-3);
}

/* ---------- 文件 prose 容器 ---------- */
.ba54-doc {
    padding: 1.8rem 2rem;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

.ba54-doc h1,
.ba54-doc h2,
.ba54-doc h3,
.ba54-doc h4,
.ba54-doc h5,
.ba54-doc h6 {
    margin: 1.6rem 0 0.8rem;
    font-family: var(--font-display);
    line-height: 1.3;
    color: var(--ink);
}

.ba54-doc h1 {
    font-size: 1.8rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--panel-line);
}

.ba54-doc h2 {
    font-size: 1.4rem;
}

.ba54-doc h3 {
    font-size: 1.15rem;
    color: var(--ink-2);
}

.ba54-doc p {
    margin: 0.8rem 0;
}

.ba54-doc ul,
.ba54-doc ol {
    margin: 0.8rem 0;
    padding-left: 1.5rem;
}

.ba54-doc ul {
    list-style: disc;
}

.ba54-doc ol {
    list-style: decimal;
}

.ba54-doc li {
    margin: 0.3rem 0;
}

.ba54-doc a {
    color: var(--cyan);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.ba54-doc a:hover,
.ba54-doc a:focus-visible {
    color: #fff;
    text-shadow: 0 0 12px rgba(63, 208, 255, 0.5);
}

.ba54-doc code {
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    background: var(--bg-2);
    font-family: var(--font-mono);
    font-size: 0.88em;
    color: var(--cyan);
}

.ba54-doc pre {
    margin: 1rem 0;
    padding: 1rem 1.2rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius);
    background: var(--bg-1);
    overflow-x: auto;
}

.ba54-doc pre code {
    padding: 0;
    background: transparent;
    color: var(--ink);
    font-size: 0.85rem;
    line-height: 1.6;
}

.ba54-doc blockquote {
    margin: 1rem 0;
    padding: 0.6rem 1.1rem;
    border-left: 3px solid var(--violet);
    background: rgba(155, 108, 255, 0.08);
    color: var(--ink-2);
}

.ba54-doc table {
    width: 100%;
    margin: 1rem 0;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.ba54-doc th,
.ba54-doc td {
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--panel-line);
    text-align: left;
}

.ba54-doc th {
    background: var(--bg-2);
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    color: var(--ink-2);
}

.ba54-doc img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

.ba54-doc hr {
    margin: 1.6rem 0;
    border: none;
    border-top: 1px solid var(--panel-line);
}

.ba54-doc-back {
    margin-top: 1.4rem;
}

@media (max-width: 600px) {
    .ba54-doc {
        padding: 1.2rem 1.1rem;
    }

    .ba54-doctree-panel {
        padding: 1rem;
    }

    .ba54-doc h1 {
        font-size: 1.5rem;
    }
}

/* =============================================================================
   prefers-reduced-motion：凍結動畫 / 掃描線 / 視差
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
    .ba54-shell::after {
        animation: none;
    }

    .ba54-scroll-cue span {
        animation: none;
    }

    .ba54-anim .ba54-beat,
    .ba54-anim .ba54-beat.is-in {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .ba54-hero-bg,
    .ba54-anomaly-field {
        transform: none !important;
    }

    .ba54-codex-card:hover,
    .ba54-codex-card:focus-visible,
    .ba54-like-btn:hover .ba54-like-glyph {
        transform: none !important;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* header account / login chip */
.ba54-login {
    color: #efd692;
    font-weight: 500;
}
.ba54-login:hover,
.ba54-login:focus-visible {
    color: #fff4cf;
}
.ba54-account {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.ba54-avatar {
    width: 26px;
    height: 26px;
    border-radius: 999px;
    object-fit: cover;
    border: 1px solid rgba(214, 180, 93, 0.5);
}
.ba54-avatar-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #efd692, #c79b3f);
    color: #13140d;
    font-weight: 700;
    font-size: 0.78rem;
}
.ba54-account-name {
    max-width: 9rem;
    overflow: hidden;
    color: #e8e6db;
    font-size: 0.86rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ba54-logout {
    color: #8a9472;
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.ba54-logout:hover,
.ba54-logout:focus-visible {
    color: #d6b45d;
}

/* ---- landing FAQ（問句 h2 + 開頭直答；與 FAQPage 結構化資料同一份內容） ---- */
.ba54-faq-list {
    display: grid;
    gap: 0.9rem;
    max-width: 56rem;
    margin: 2.6rem auto 0;
    text-align: left;
}

.ba54-faq-item {
    padding: 1.4rem 1.6rem;
}

.ba54-faq-item > h2 {
    margin: 0;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
}

.ba54-faq-item > p {
    margin: 0.9rem 0 0;
    color: var(--ink-2);
    line-height: 1.75;
}

/* 開頭直答比展開段亮一階,掃讀時先看到答案。 */
.ba54-faq-item > .ba54-faq-answer {
    color: var(--ink);
}

.ba54-faq-more a {
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.86rem;
    letter-spacing: 0.05em;
}

/* ---- 新聞資料袋（press kit） ---- */
.ba54-press-layout {
    display: grid;
    grid-template-columns: minmax(16rem, 22rem) minmax(0, 1fr);
    align-items: start;
    gap: 1.4rem;
}

@media (max-width: 900px) {
    .ba54-press-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}

.ba54-press-factsheet {
    position: sticky;
    top: 5.5rem;
    padding: 1.6rem 1.8rem;
}

@media (max-width: 900px) {
    .ba54-press-factsheet {
        position: static;
    }
}

.ba54-press-factsheet h2 {
    margin: 0 0 1.1rem;
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.86rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.ba54-press-factsheet dl {
    margin: 0;
    display: grid;
    gap: 0.7rem;
}

.ba54-press-factsheet dt {
    color: var(--ink-3);
    font-size: 0.76rem;
    letter-spacing: 0.06em;
}

.ba54-press-factsheet dd {
    margin: 0.15rem 0 0;
    color: var(--ink);
    font-size: 0.95rem;
}

.ba54-press-body {
    display: grid;
    gap: 1.4rem;
}

.ba54-press-asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: 1rem;
    margin-top: 1.4rem;
}

.ba54-press-asset {
    margin: 0;
    padding: 0.9rem;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius);
    background: rgba(6, 10, 16, 0.5);
}

.ba54-press-asset img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: calc(var(--radius) - 4px);
}

.ba54-press-asset-mono img {
    padding: 1.4rem;
    background: rgba(255, 255, 255, 0.04);
}

.ba54-press-asset figcaption {
    margin-top: 0.7rem;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.ba54-press-note {
    margin-top: 1.2rem;
    color: var(--ink-3);
    font-size: 0.9rem;
}

.ba54-press-links {
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.5rem;
}

.ba54-press-links a {
    color: var(--cyan);
}

/* ---- 遊戲介紹長文頁 ---- */
.ba54-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.2rem;
    margin-top: 1.6rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--panel-line);
}

.ba54-toc a {
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.ba54-compare-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
    gap: 1rem;
    margin-top: 1.8rem;
}

.ba54-compare {
    padding: 1.3rem 1.5rem;
}

.ba54-compare h3 {
    margin: 0 0 0.9rem;
    font-family: var(--font-display);
    font-size: 1.08rem;
}

.ba54-compare p {
    margin: 0 0 0.7rem;
    color: var(--ink-2);
    font-size: 0.94rem;
    line-height: 1.7;
}

.ba54-compare p:last-child {
    margin-bottom: 0;
}

.ba54-compare-tag {
    display: inline-block;
    margin-right: 0.6rem;
    padding: 0.1rem 0.5rem;
    border: 1px solid var(--cyan);
    border-radius: 999px;
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    vertical-align: 0.08em;
}

.ba54-compare-tag-diff {
    border-color: var(--amber);
    color: var(--amber);
}

.ba54-spec-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: 0.9rem 1.6rem;
    margin: 1.6rem 0 0;
}

.ba54-spec-list dt {
    color: var(--ink-3);
    font-size: 0.76rem;
    letter-spacing: 0.06em;
}

.ba54-spec-list dd {
    margin: 0.2rem 0 0;
    color: var(--ink);
    font-size: 0.95rem;
}

.ba54-section-more {
    margin: 2.4rem 0 0;
    text-align: center;
}

/* ---- 頁尾社群圖示 ---- */
.ba54-icon-sprite {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.ba54-social-links {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

/* 選擇器刻意用兩個 class:.ba54-footer-links a 是 (0,1,1)，單靠 .ba54-social-link
   (0,1,0) 會被它蓋掉。 */
.ba54-footer-links .ba54-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 1.9rem;
    border: 1px solid var(--panel-line);
    border-radius: 50%;
    color: var(--ink-2);
    transition: color var(--t) var(--ease), border-color var(--t) var(--ease),
        background var(--t) var(--ease);
}

.ba54-footer-links .ba54-social-link:hover,
.ba54-footer-links .ba54-social-link:focus-visible {
    border-color: var(--cyan);
    background: rgba(63, 208, 255, 0.1);
    color: var(--cyan);
}

.ba54-social-icon {
    width: 0.95rem;
    height: 0.95rem;
    fill: currentColor;
}

/* press 頁的清單內圖示與文字並排 */
.ba54-press-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
    .ba54-footer-links .ba54-social-link {
        transition: none;
    }
}

/* =============================================================================
   公開頁麵包屑 + 開發進度頁
   ============================================================================= */
/* 公開頁麵包屑(與 BreadcrumbList JSON-LD 同一份資料;設計室的檔案樹麵包屑另有樣式) */
.ba54-breadcrumb {
    margin-bottom: 1.4rem;
}

.ba54-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.3rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    color: var(--ink-3);
}

.ba54-breadcrumb li {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

/* 分隔符用 CSS 產生:不進 DOM 文字,輔助科技不會把它唸出來。 */
.ba54-breadcrumb li + li::before {
    content: "›";
    color: var(--ink-3);
}

.ba54-breadcrumb a {
    color: var(--cyan);
}

.ba54-breadcrumb a:hover,
.ba54-breadcrumb a:focus-visible {
    text-decoration: underline;
}

.ba54-breadcrumb [aria-current="page"] {
    color: var(--ink-2);
}

/* ---- 開發進度(roadmap)---- */
.ba54-roadmap-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.4rem 1.2rem;
}

.ba54-roadmap-period {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* 進度條:類別式(滿 / 半 / 空),刻意不標數字百分比。 */
.ba54-progress {
    margin-top: 0.9rem;
    height: 6px;
    border: 1px solid var(--panel-line);
    border-radius: var(--radius-sm);
    background: rgba(120, 160, 200, 0.08);
    overflow: hidden;
}

.ba54-progress-fill {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.ba54-progress-done .ba54-progress-fill {
    width: 100%;
}

.ba54-progress-doing .ba54-progress-fill {
    width: 55%;
}

.ba54-progress-planned .ba54-progress-fill {
    width: 0;
}

.ba54-roadmap-list {
    margin: 1.4rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.9rem;
}

.ba54-roadmap-list li {
    padding-left: 1rem;
    border-left: 2px solid var(--panel-line);
}

.ba54-roadmap-list strong {
    display: block;
    font-family: var(--font-display);
    font-weight: 700;
}

.ba54-roadmap-list span {
    color: var(--ink-2);
    line-height: 1.7;
}

/* 之後放遊戲截圖的預留欄位:先給一個空框,不放佔位圖。 */
.ba54-roadmap-media-slot {
    margin-top: 1.2rem;
    padding: 2.4rem 1.6rem;
    border: 1px dashed var(--panel-line);
    border-radius: var(--radius);
    text-align: center;
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.08em;
}

.ba54-roadmap-updated {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.1em;
}