/* ============================================================
   ラテシン問題集 — app.css（デザイン刷新 v2「古い洋館 × ミステリー劇場」）
   方針: 退色した羊皮紙の質感（グレイン/簀目/シミ/ヴィネット）、
   スマホ特化、随所にアニメーション。彫金タイトル。
   ※既存の画像(background.jpg/texture.gif/curtain.png/box.png/foothed.png)
     は活かしつつ、CSSの質感とアニメを重ねる。
   ============================================================ */
:root {
    /* ---- 色（退色・温かみ方向） ---- */
    --bg: #3d080c;
    --bg-2: #520d12;
    --paper: #e7dab4;
    --surface: #f1e7cc;
    --surface-2: #ddcfa4;
    --text: #2b1d14;
    --muted: #674e34;        /* 羊皮紙上で4.5:1確保 */
    --muted-soft: #806a52;
    --accent: #1c7d76;
    --accent-dark: #134f4a;
    --accent-ink: #fdf6e3;
    --gold: #9c7a30;
    --gold-soft: #c2a85f;
    --gold-lit: #f0d488;
    --line: #c5aa70;
    --line-soft: #d8c69a;
    --red: #9e2017;
    --ink-edge: #3a2a16;

    /* ---- spacing ---- */
    --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
    --sp-5: 24px; --sp-6: 32px; --sp-7: 48px;

    /* ---- type ---- */
    --fs-eyebrow: .72rem; --fs-sm: .85rem; --fs-base: 1rem;
    --fs-lead: 1.14rem;   --fs-h3: 1.2rem; --fs-h2: 1.5rem; --fs-h1: 1.9rem;
    --lh-tight: 1.45; --lh-body: 1.85; --lh-prose: 1.95;
    --ls-wide: .1em;  --ls-label: .14em;

    /* ---- radius / shadow ---- */
    --radius-sm: 4px; --radius: 6px; --radius-pill: 999px;
    --shadow-sm: 0 1px 4px rgba(40, 22, 8, .14);
    --shadow: 0 4px 12px rgba(40, 22, 8, .20);
    --shadow-lg: 0 12px 30px rgba(20, 8, 4, .42);
    --focus-ring: 0 0 0 3px rgba(28, 125, 118, .30);

    /* ---- 質感テクスチャ（CSSのみ） ---- */
    --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.085'/%3E%3C/svg%3E");
    --laid: repeating-linear-gradient(0deg, rgba(110,76,38,.028) 0 1px, transparent 1px 4px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

/* ============================================================
   アニメーション（prefers-reduced-motion を尊重）
   ============================================================ */
@keyframes ds-rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes ds-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes ds-seal { 0% { opacity: 0; transform: scale(.8) rotate(-6deg); } 60% { transform: scale(1.04) rotate(1deg); } 100% { opacity: 1; transform: none; } }
@keyframes candle { 0%,100% { opacity: .85; transform: scale(1); } 25% { opacity: 1; transform: scale(1.03); } 55% { opacity: .78; transform: scale(.99); } 80% { opacity: .95; } }
@keyframes gold-shimmer { 0% { background-position: -120% 0; } 100% { background-position: 220% 0; } }
@keyframes title-sheen { 0%, 86% { transform: translateX(-130%) skewX(-16deg); } 100% { transform: translateX(360%) skewX(-16deg); } }
@keyframes ds-unseal { from { opacity: 0; transform: translateY(-6px) scaleY(.96); transform-origin: top; } to { opacity: 1; transform: none; } }
@keyframes ds-pop { 0% { opacity: 0; transform: translateY(8px) scale(.96); } 100% { opacity: 1; transform: none; } }
@keyframes ai-spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: no-preference) {
    .anim-rise { animation: ds-rise .6s cubic-bezier(.2,.7,.2,1) both; }
    .anim-fade { animation: ds-fade .8s ease both; }
    .anim-seal { animation: ds-seal .7s cubic-bezier(.2,.8,.2,1) both; }
    .d1 { animation-delay: .06s; } .d2 { animation-delay: .14s; }
    .d3 { animation-delay: .22s; } .d4 { animation-delay: .30s; }
    /* コンテンツの段階的な登場 */
    .container > * { animation: ds-rise .55s cubic-bezier(.2,.7,.2,1) both; }
    .container > :nth-child(2) { animation-delay: .05s; }
    .container > :nth-child(3) { animation-delay: .10s; }
    .container > :nth-child(4) { animation-delay: .15s; }
}

/* ============================================================
   地（洋館の壁）と本体（羊皮紙）
   ============================================================ */
body {
    margin: 0;
    font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "HGS明朝E", serif;
    color: var(--text);
    line-height: var(--lh-body);
    background-color: var(--bg);
    /* 既存の壁紙画像＋CSSの地紋/灯り/暗がりを重ねる */
    background-image:
        var(--grain),
        repeating-linear-gradient(45deg, rgba(214,170,110,.03) 0 1px, transparent 1px 24px),
        repeating-linear-gradient(-45deg, rgba(214,170,110,.03) 0 1px, transparent 1px 24px),
        radial-gradient(ellipse 80% 40% at 50% -6%, rgba(150,40,40,.5), transparent 70%),
        url(/assets/img/background.jpg);
    background-attachment: scroll, scroll, scroll, scroll, fixed;
}

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

#wrap {
    position: relative;
    max-width: 560px;
    margin: 0 auto;
    min-height: 100vh;
    overflow: hidden;
    color: var(--text);
    background-color: var(--paper);
    /* 退色した紙: 既存texture.gif ＋ グレイン/簀目/焼けムラ */
    background-image:
        var(--grain),
        var(--laid),
        radial-gradient(circle at 16% 14%, rgba(120,80,40,.10), transparent 9%),
        radial-gradient(circle at 84% 26%, rgba(120,80,40,.08), transparent 10%),
        radial-gradient(circle at 70% 82%, rgba(120,80,40,.07), transparent 11%),
        url(/assets/img/texture.gif);
    box-shadow:
        0 0 1000px rgb(0, 0, 0),
        inset 0 0 90px rgba(120, 80, 40, .14);
}

/* ============================================================
   ヘッダー（劇場ビルボード: 彫金タイトル＋電球の帯）
   ============================================================ */
.site-header {
    position: relative; overflow: hidden;
    background-color: #4a0a0e;
    background-image:
        var(--grain),
        url(/assets/img/curtain.png),
        radial-gradient(ellipse at 50% 120%, rgba(0,0,0,.5), transparent 60%);
    background-repeat: no-repeat;
    background-position: 0 0, 50% 50%, 50% 100%;
    background-size: 180px 180px, 200% 100%, 100% 100%;
    background-blend-mode: overlay, normal, normal;
    border-bottom: 3px solid var(--gold);
    box-shadow: inset 0 8px 20px rgba(0,0,0,.4);
}
.site-header::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-lit), var(--gold));
    background-size: 220% 100%; animation: gold-shimmer 7s linear infinite;
}

.bb-top { position: relative; z-index: 1; padding: 22px 18px 16px; text-align: center; }
.bb-glow { position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse 72% 120% at 50% 40%, rgba(255,184,96,.24), transparent 70%); animation: candle 4.6s ease-in-out infinite; pointer-events: none; }
.bb-eyebrow { position: relative; z-index: 1; font-size: .6rem; letter-spacing: .46em; text-indent: .46em; font-weight: 700; color: #e3c485; margin: 0 0 10px; text-shadow: 0 1px 2px rgba(0,0,0,.6); }

/* 彫金タイトル（折り返さない・金箔グラデ＋多層drop-shadow） */
.site-logo {
    position: relative; z-index: 1; display: inline-block; text-decoration: none; overflow: hidden; white-space: nowrap;
    font-size: 2.1rem; font-weight: 700; letter-spacing: .14em; text-indent: .14em; line-height: 1.16; margin: 0;
    background-image: linear-gradient(176deg, #fbeec2 0%, #eccf86 26%, #c79f49 52%, #9a7327 78%, #d8b766 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    filter:
        drop-shadow(0 1px 0 rgba(255,245,212,.5))
        drop-shadow(0 -1px 1px rgba(60,30,8,.45))
        drop-shadow(0 2px 5px rgba(0,0,0,.55));
}
.site-logo .sheen { position: absolute; top: -20%; left: 0; width: 36%; height: 140%; pointer-events: none; -webkit-text-fill-color: initial; background: linear-gradient(100deg, transparent, rgba(255,248,224,.55), transparent); animation: title-sheen 9s ease-in-out infinite; }

/* 下段: 電球の帯にタグライン */
.bb-band { position: relative; z-index: 1; padding: 14px 22px 16px; text-align: center; background: linear-gradient(180deg, #6a0f14, #4a0a0e); border-top: 2px solid var(--gold); box-shadow: inset 0 0 40px rgba(0,0,0,.5); }
.bb-band::before, .bb-band::after { content: ""; position: absolute; left: 8px; right: 8px; height: 4px; background-image: radial-gradient(circle, var(--gold-lit) 0 1.6px, transparent 2px); background-size: 16px 4px; background-repeat: repeat-x; opacity: .85; }
.bb-band::before { top: 5px; } .bb-band::after { bottom: 5px; }
.bb-band-glow { position: absolute; inset: 0; background: radial-gradient(ellipse 60% 140% at 50% 50%, rgba(255,200,120,.16), transparent 70%); pointer-events: none; }
.bb-tagline { position: relative; z-index: 1; margin: 0; font-size: 1.02rem; line-height: 1.55; font-weight: 700; color: #fdf3d8; letter-spacing: .04em; text-shadow: 0 1px 4px rgba(0,0,0,.6); }
.bb-tagline .mk { color: var(--gold-lit); }

/* トップ＝フル（帯あり・タイトル大）／他＝コンパクト（帯なし・タイトル小） */
.site-header.is-compact .bb-top { padding: 16px 18px 14px; }
.site-header.is-compact .bb-eyebrow { display: none; }
.site-header.is-compact .site-logo { font-size: 1.3rem; }
.site-header.is-compact .bb-band { display: none; }

/* ============================================================
   レイアウト・見出し
   ============================================================ */
.container { max-width: 560px; margin: 0 auto; padding: var(--sp-5) var(--sp-4) var(--sp-6); }

.page-title,
.sample-list h2 {
    text-align: center; font-size: var(--fs-h3); font-weight: 700; letter-spacing: .06em;
    margin: 2px 0 var(--sp-4); display: flex; align-items: center; gap: 14px; justify-content: center;
}
.sample-list h2 { font-size: 1.1rem; }
.page-title::before, .page-title::after,
.sample-list h2::before, .sample-list h2::after {
    content: ""; flex: 0 1 56px; height: 1px;
    background: linear-gradient(to var(--dir, right), transparent, var(--gold-soft));
}
.page-title::before, .sample-list h2::before { --dir: left; }

/* ---- ヒーロー ---- */
/* ---- トップのコラージュ（吹き出しが浮遊する演出） ---- */
.collage { position: relative; width: 100%; max-width: 460px; margin: 2px auto 16px; }
.collage-base, .collage-bubbles { display: block; width: 100%; height: auto; }
.collage-bubbles { position: absolute; inset: 0; pointer-events: none; }
@media (prefers-reduced-motion: no-preference) {
    .collage-bubbles { animation: bubble-float 3.6s ease-in-out infinite; will-change: transform; }
}
@keyframes bubble-float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-3%); }
}

.hero { text-align: center; padding: 4px 0 14px; }
.hero-count { font-size: .92rem; color: var(--muted); margin: 0 0 2px; letter-spacing: .04em; }
.hero-count strong { color: var(--accent); font-size: 1.7rem; font-weight: 700; margin: 0 .12em; letter-spacing: .02em; }
.hero-lead { color: var(--muted); font-size: .88rem; margin: 0; }
.hero-actions { display: flex; flex-direction: column; gap: 11px; margin-top: 16px; }
.omakase-next { margin-top: 30px; }
.omakase-next .btn { background: linear-gradient(180deg, #218a82, var(--accent-dark)); color: var(--accent-ink); border-color: var(--accent-dark); }

/* ============================================================
   カード（問題カード）
   ============================================================ */
.card {
    display: block; position: relative; overflow: hidden;
    border: 1px solid var(--line); border-radius: var(--radius);
    padding: 15px 16px 14px 22px; margin: 13px 0; color: inherit; text-decoration: none;
    background-color: var(--surface);
    background-image:
        var(--grain), var(--laid),
        radial-gradient(circle at 22% 18%, rgba(120,80,40,.07), transparent 14%),
        radial-gradient(circle at 80% 82%, rgba(120,80,40,.06), transparent 14%);
    background-blend-mode: multiply, normal, normal, normal;
    box-shadow: var(--shadow-sm), inset 0 0 30px rgba(120,80,40,.10);
    transition: box-shadow .25s, transform .25s, border-color .25s;
}
/* 左の金茶の綴じ＋ステッチ */
.card::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px;
    background: linear-gradient(180deg, var(--gold-soft), var(--gold) 50%, var(--gold-soft));
    box-shadow: inset -1px 0 0 rgba(0,0,0,.22);
}
a.card:hover { border-color: var(--gold-soft); box-shadow: var(--shadow), inset 0 0 30px rgba(120,80,40,.12); transform: translateY(-3px); }
a.card:active { transform: translateY(-1px) scale(.995); }

.card-meta { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.badge {
    display: inline-block; background: transparent; color: var(--accent);
    border: 1.5px solid var(--accent); font-size: .68rem; padding: 2px 9px; border-radius: 3px;
    letter-spacing: .06em; font-weight: 700; transform: rotate(-2deg);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.3);
}
.badge-guro { color: var(--red); border-color: var(--red); transform: rotate(1.5deg); }
.card-title {
    position: relative; display: block; margin: 11px 0 7px; padding-bottom: 8px;
    font-size: 1.2rem; font-weight: 700; line-height: var(--lh-tight); color: var(--text);
}
/* ホバーで金の下線が左から伸びる */
.card-title::after {
    content: ""; position: absolute; left: 0; bottom: 0; height: 1.5px; width: 100%;
    background: linear-gradient(90deg, var(--gold), transparent 85%);
    transform: scaleX(0); transform-origin: left; transition: transform .4s cubic-bezier(.3,.7,.2,1);
}
a.card:hover .card-title::after { transform: scaleX(1); }
.card-excerpt {
    margin: 0; color: var(--muted); font-size: var(--fs-sm); line-height: 1.7;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ---- 事件簿カードの要素（一覧 mondai_list） ---- */
.card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.genre-stamp {
    color: var(--accent); border: 1.5px solid var(--accent); border-radius: 3px;
    font-size: .68rem; font-weight: 700; letter-spacing: .08em; padding: 2px 9px;
    transform: rotate(-2deg); box-shadow: inset 0 0 0 1px rgba(255,255,255,.3);
}
.genre-stamp.guro { color: var(--red); border-color: var(--red); transform: rotate(1.5deg); }
.card-score { margin-left: auto; color: var(--gold); font-size: .84rem; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.card-score .star { color: var(--gold-soft); }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 13px; padding-top: 10px; border-top: 1px solid var(--line-soft); }
.diff { display: inline-flex; align-items: center; gap: 7px; font-size: .73rem; color: var(--muted); letter-spacing: .05em; }
.pips { font-size: .82rem; letter-spacing: 2px; color: var(--line); }
.diff-easy .pips { color: var(--accent); }
.diff-normal .pips { color: var(--gold); }
.diff-hard .pips { color: var(--red); }
.dur { font-size: .75rem; color: var(--muted); letter-spacing: .03em; }

/* 独自マークアップ */
.mk-red { color: var(--red); font-weight: 600; }
.mk-big { font-size: 1.25em; }

/* ============================================================
   検索・一覧
   ============================================================ */
.search-form {
    border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 20px;
    background-color: var(--surface); background-image: var(--grain), var(--laid); background-blend-mode: multiply, normal;
    box-shadow: var(--shadow-sm);
}
.search-input {
    width: 100%; min-height: 48px; padding: 12px 14px; margin-bottom: 10px;
    background: var(--paper); border: 1px solid var(--line); border-radius: 5px;
    color: var(--text); font-size: 1rem; font-family: inherit;
    box-shadow: inset 0 1px 3px rgba(80,50,20,.12);
}
.search-input:focus, .search-select:focus, .qa-search:focus {
    outline: none; border-color: var(--accent); box-shadow: var(--focus-ring);
}
.search-row { display: flex; gap: 8px; margin-bottom: 12px; }
.search-select {
    flex: 1; min-height: 46px; padding: 11px; background: var(--paper);
    border: 1px solid var(--line); border-radius: 5px; color: var(--text); font-size: .92rem; font-family: inherit;
}
.search-check { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .9rem; margin-bottom: 14px; cursor: pointer; }
.search-check input { accent-color: var(--accent); width: 18px; height: 18px; }
.active-tag { font-size: .9rem; margin: 0 0 12px; }
.active-tag a { color: var(--red); text-decoration: none; padding: 0 6px; font-weight: 700; }

/* ファセット絞り込み */
.facet-group { margin-bottom: 12px; }
.facet-label { display: block; font-size: var(--fs-eyebrow); color: var(--accent); letter-spacing: var(--ls-label); margin-bottom: 6px; }
.facet-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.facet-chip {
    display: inline-flex; align-items: center; min-height: 40px; padding: 0 14px;
    background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius-pill);
    color: var(--muted); font-size: .82rem; font-weight: 700; cursor: pointer; user-select: none;
    transition: background .15s, border-color .15s, color .15s, transform .08s;
}
.facet-chip:hover { border-color: var(--gold-soft); }
.facet-chip:active { transform: scale(.95); }
/* 選択の見た目は input の checked 状態のみで判定する。
   サーバ側の .on クラスに依存すると、チェックを外しても見た目が残る（JS無しのため）。 */
.facet-chip:has(input:checked) {
    background: linear-gradient(180deg, #218a82, var(--accent-dark)); color: var(--accent-ink);
    border-color: var(--accent-dark); box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.18);
}
.facet-chip:has(input:checked)::before { content: "✓"; font-size: .8em; margin-right: 5px; font-weight: 700; }
.facet-chip input { display: none; }

/* カードのタグ */
.tag-pill { display: inline-block; font-size: .68rem; padding: 1px 8px; background: var(--surface-2); color: var(--muted); border-radius: 3px; line-height: 1.6; }
.tp-diff { background: #e4d2a6; color: #6f5214; font-weight: 700; }
.tp-dur { background: #cfe0d9; color: #275f57; }
.tp-diff::before { content: "難易度 "; font-weight: 400; opacity: .65; }
.tp-dur::before  { content: "所要 ";   font-weight: 400; opacity: .65; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }

.tag-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.tag-chip {
    display: inline-block; padding: 8px 13px; min-height: 40px; line-height: 1.7;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-pill);
    color: var(--text); font-size: .8rem; text-decoration: none; box-shadow: var(--shadow-sm);
    transition: color .12s, border-color .12s;
}
.tag-chip:hover { color: var(--accent); border-color: var(--accent); }

.mondai-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.mondai-tags .tag-chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; min-height: 0; font-size: .78rem; }
.tag-chip-cat { font-size: .64rem; letter-spacing: .04em; color: var(--muted); border-right: 1px solid var(--line-soft); padding-right: 6px; }

.result-count { color: var(--muted); font-size: .85rem; margin: 0 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line-soft); }
.score { color: var(--gold); font-size: .82rem; font-weight: 700; margin-left: auto; letter-spacing: .02em; }
.no-result { color: var(--muted); text-align: center; padding: 40px 0; }

.pager { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 28px 0 8px; }
.pager-btn {
    display: inline-flex; align-items: center; min-height: 44px; padding: 0 22px;
    background: var(--surface); border: 1px solid var(--line); border-radius: 5px;
    color: var(--text); text-decoration: none; font-weight: 700; box-shadow: var(--shadow-sm);
    transition: border-color .2s, transform .12s;
}
.pager-btn:hover { border-color: var(--gold-soft); transform: translateY(-1px); }
.pager-now { color: var(--muted); font-size: .9rem; letter-spacing: .05em; }

/* ============================================================
   良問ランキング
   ============================================================ */
.rank-tabs { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 10px; margin-bottom: 18px; -webkit-overflow-scrolling: touch; }
.rank-tab {
    flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 40px; padding: 0 15px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-pill);
    color: var(--muted); font-size: .85rem; text-decoration: none; white-space: nowrap; box-shadow: var(--shadow-sm);
}
.rank-tab.on { background: linear-gradient(180deg, #218a82, var(--accent-dark)); color: var(--accent-ink); border-color: var(--accent-dark); font-weight: 700; }

.rank-list { display: flex; flex-direction: column; gap: 9px; }
.rank-row {
    display: flex; align-items: center; gap: 14px;
    border: 1px solid var(--line); border-radius: var(--radius); padding: 13px 15px;
    color: inherit; text-decoration: none;
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    box-shadow: var(--shadow-sm); transition: box-shadow .15s, transform .15s, border-color .15s;
}
.rank-row:hover { border-color: var(--gold-soft); box-shadow: var(--shadow); transform: translateY(-2px); }
.rank-no { flex: 0 0 auto; width: 1.7em; text-align: center; font-size: 1.5rem; font-weight: 800; color: var(--line); font-style: italic; font-family: Georgia, serif; }
.rank-no-1 { color: #d4a52a; } .rank-no-2 { color: #a8a8a8; } .rank-no-3 { color: #bd8350; }
.rank-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.rank-meta { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.rank-title { font-size: 1.08rem; font-weight: 700; line-height: 1.4; }
.rank-author { color: var(--muted); font-size: .78rem; }

/* ============================================================
   出題ビュー
   ============================================================ */
[x-cloak] { display: none !important; }

.back-link { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); text-decoration: none; font-size: var(--fs-sm); margin-bottom: 6px; transition: color .15s; }
.back-link:hover { color: var(--accent); }

.mondai-head { margin-bottom: var(--sp-5); text-align: center; }
.mondai-title { font-size: var(--fs-h2); margin: 12px 0 6px; line-height: var(--lh-tight); font-weight: 700; }
.mondai-author { color: var(--muted); font-size: .82rem; margin: 0; }

.section-eyebrow { font-size: var(--fs-eyebrow); color: var(--accent); letter-spacing: var(--ls-label); margin: 0 0 10px; text-align: center; }

/* 問題箱（額縁）＝展示作品 */
.problem-box {
    position: relative;
    border-style: solid; border-width: 14px; border-image: url(/assets/img/box.png) 13 repeat;
    padding: var(--sp-5) var(--sp-4) var(--sp-6);
    box-shadow: var(--shadow);
    background-color: #f6efd9;
    background-image:
        var(--grain), var(--laid),
        radial-gradient(circle at 20% 16%, rgba(120,80,40,.06), transparent 14%),
        radial-gradient(circle at 84% 80%, rgba(120,80,40,.05), transparent 14%),
        radial-gradient(ellipse at 50% 40%, rgba(249,242,223,1), rgba(238,228,201,1) 100%);
    background-blend-mode: multiply, normal, normal, normal, normal;
}
.problem-text { font-size: .9rem; line-height: var(--lh-prose); }

/* ---- リアル出題おすすめ投票（いいね風） ---- */
.recommend { display: flex; align-items: center; justify-content: center; gap: 11px; margin: 14px 0; }
/* ページ下部のおすすめカード（出題中の誤タップを避けつつ、使用後に押しやすい位置） */
.recommend-card {
    margin: 26px 0 8px; padding: 16px; text-align: center;
    border: 1px solid var(--line); border-radius: var(--radius);
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    box-shadow: var(--shadow-sm);
}
.recommend-card .recommend { margin: 0; }
.recommend-prompt { margin: 0 0 12px; font-size: .9rem; font-weight: 700; color: var(--text); }
.like-btn {
    display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px 0 14px;
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    border: 1.5px solid var(--line); border-radius: var(--radius-pill);
    color: var(--text); font-family: inherit; font-size: 1rem; font-weight: 700; cursor: pointer;
    box-shadow: var(--shadow-sm); transition: transform .12s, box-shadow .2s, border-color .2s, background .2s, color .2s;
}
.like-btn:hover { border-color: var(--red); box-shadow: var(--shadow); }
.like-btn:active { transform: scale(.96); }
.like-btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.like-btn:disabled { opacity: .6; cursor: default; }
.like-heart { color: var(--muted); font-size: 1.2rem; line-height: 1; transition: transform .18s, color .2s; }
.like-count { min-width: 1ch; font-variant-numeric: tabular-nums; }
.like-label { color: var(--muted); font-size: .84rem; }
.use-note { margin: 12px 0 4px; text-align: center; font-size: .82rem; color: var(--muted); }
.use-note a { color: var(--accent); text-decoration: none; }
.use-note a:hover { text-decoration: underline; }
/* 投票済み: ハートが灯る */
.like-btn.on { border-color: var(--red); color: var(--red); background-color: #fbeceb; }
.like-btn.on .like-heart { color: var(--red); transform: scale(1.18); }
/* 一覧カードのおすすめ票バッジ */
.rec-pill { display: inline-flex; align-items: center; gap: 3px; font-size: .68rem; font-weight: 700; padding: 2px 8px; border-radius: var(--radius-pill); color: var(--accent-dark); background: rgba(28,125,118,.12); border: 1px solid rgba(28,125,118,.35); }

/* ---- 参加者向けQR共有 ---- */
.qr-share { margin: 14px 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply; }
.qr-summary { list-style: none; cursor: pointer; user-select: none; display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 52px; padding: 0 16px; font-size: 1rem; font-weight: 700; color: var(--text); }
.qr-summary::-webkit-details-marker { display: none; }
.qr-summary:hover { color: var(--accent); }
.qr-chev { flex: 0 0 auto; width: 14px; height: 14px; position: relative; }
.qr-chev::before, .qr-chev::after { content: ""; position: absolute; inset: 0; margin: auto; background: var(--gold); }
.qr-chev::before { width: 14px; height: 1.5px; } .qr-chev::after { width: 1.5px; height: 14px; transition: transform .3s; }
.qr-share[open] .qr-chev::after { transform: scaleY(0); }
.qr-panel { padding: 4px 16px 18px; text-align: center; animation: ds-unseal .4s cubic-bezier(.2,.8,.2,1) both; }
.qr-canvas { display: inline-block; padding: 12px; background: #f4ecd2; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.qr-canvas img, .qr-canvas canvas { display: block; }
.qr-note { color: var(--muted); font-size: .82rem; line-height: 1.7; margin: 12px 0 8px; }
.qr-note strong { color: var(--text); }
.qr-link { display: inline-block; color: var(--accent); text-decoration: none; font-size: .85rem; font-weight: 700; min-height: 44px; line-height: 44px; }
.qr-link:hover { color: var(--accent-dark); }

/* 出題者ツール区切り */
.host-divider { display: flex; align-items: center; text-align: center; color: var(--muted); font-size: .76rem; letter-spacing: .1em; margin: 32px 0 18px; }
.host-divider::before, .host-divider::after { content: ""; flex: 1; height: 1px; background: linear-gradient(to var(--d, right), transparent, var(--gold-soft)); }
.host-divider::before { --d: left; }
.host-divider span { padding: 0 14px; }

.tool { margin: 14px 0; }
.tool-title { font-size: 1rem; margin: 0 0 12px; font-weight: 700; padding-left: 11px; border-left: 3px solid var(--accent); }

/* ============================================================
   ボタン
   ============================================================ */
.btn {
    position: relative; overflow: hidden;
    display: inline-block; width: 100%; padding: 15px;
    border: 1px solid var(--line); border-radius: var(--radius);
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    color: var(--text); font-size: 1.02rem; font-weight: 700; cursor: pointer;
    text-align: center; text-decoration: none; font-family: inherit; letter-spacing: .03em;
    box-shadow: var(--shadow-sm), inset 0 0 22px rgba(120,80,40,.10);
    transition: transform .12s, box-shadow .2s, border-color .2s;
}
.btn::after {
    content: ""; position: absolute; top: 0; left: -70%; width: 55%; height: 100%;
    background: linear-gradient(100deg, transparent, rgba(255,248,225,.45), transparent);
    transform: skewX(-18deg); transition: left .55s ease; pointer-events: none;
}
.btn:hover { border-color: var(--gold-soft); box-shadow: var(--shadow); }
.btn:hover::after { left: 130%; }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); border-color: var(--accent); }
.btn:active { transform: scale(.98); }
/* 主操作（答えを見る等） */
.btn-answer {
    background: linear-gradient(180deg, #218a82, var(--accent-dark));
    color: var(--accent-ink); border: 1px solid var(--accent-dark);
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.18), 0 0 0 1px rgba(156,122,48,.5);
}
.btn-answer:hover { box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.22), 0 0 0 1px rgba(194,168,95,.8); }

/* ヒント */
.hint-item {
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    border: 1px solid var(--line); border-radius: 6px; padding: 12px 15px; margin-bottom: 10px;
    font-size: .96rem; box-shadow: var(--shadow-sm);
}
.hint-item[x-show] { animation: ds-unseal .4s cubic-bezier(.2,.8,.2,1) both; }
.hint-no { display: inline-block; padding: 5px; min-width: 1.6em; line-height: 1.6em; text-align: center; background: radial-gradient(circle at 35% 30%, #2aa49a, var(--accent-dark)); color: var(--accent-ink); border-radius: 50%; font-size: .72rem; font-weight: 700; margin-right: 9px; box-shadow: inset 0 1px 0 rgba(255,255,255,.25); }

/* 出題メモ */
.memo-list { margin-bottom: 14px; }
.memo-item { display: block; }
.memo-body { line-height: var(--lh-body); white-space: pre-wrap; word-break: break-word; }
.memo-meta { display: flex; align-items: center; gap: 10px; margin: 8px 0 0; font-size: .76rem; color: var(--muted); }
.memo-author { font-weight: 700; color: var(--text); }
.memo-del-form { margin-left: auto; }
.memo-del { padding: 4px 10px; min-height: 32px; border: 1px solid var(--line); background: var(--surface); color: var(--red); border-radius: 4px; cursor: pointer; font-family: inherit; font-size: .76rem; }
.memo-del:hover { border-color: var(--red); }
.memo-empty { color: var(--muted); text-align: center; padding: 18px 0; }
.memo-form { margin-top: 12px; }
.memo-form .contact-textarea { min-height: 84px; margin-bottom: 10px; }
.memo-loginfo { font-size: .78rem; color: var(--muted); margin: 8px 2px 0; text-align: right; }
.memo-loginfo a { color: var(--accent); text-decoration: none; }
.memo-login { margin: 4px 0; }

/* 想定問答 */
.tool-toggle {
    display: flex; justify-content: space-between; align-items: center; width: 100%; padding: 16px;
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    border: 1px solid var(--line); border-radius: var(--radius); color: var(--text);
    font-size: 1rem; font-weight: 700; cursor: pointer; font-family: inherit; box-shadow: var(--shadow-sm);
    transition: border-color .2s;
}
.tool-toggle:hover { border-color: var(--gold-soft); }
.qa-body { margin-top: 12px; }
.memo-panel { margin-top: 12px; }
.qa-note { color: var(--muted); font-size: .82rem; margin: 0 0 10px; }
.qa-controls { position: sticky; top: 0; background: var(--paper); padding: 10px 0; z-index: 1; }
.qa-search {
    width: 100%; min-height: 48px; padding: 11px 14px; margin-bottom: 9px;
    background: var(--paper); border: 1px solid var(--line); border-radius: 5px; color: var(--text); font-size: 1rem; font-family: inherit;
    box-shadow: inset 0 1px 3px rgba(80,50,20,.12);
}
.qa-filters { display: flex; gap: 7px; }
.qa-filters button {
    flex: 1; min-height: 44px; padding: 8px; border: 1px solid var(--line);
    background: var(--surface); color: var(--muted); border-radius: 5px; font-size: .85rem; cursor: pointer; font-family: inherit;
    transition: background .2s, color .2s, border-color .2s;
}
.qa-filters button.on { background: linear-gradient(180deg, #218a82, var(--accent-dark)); color: var(--accent-ink); border-color: var(--accent-dark); font-weight: 700; }

.qa-list { margin-top: 12px; max-height: 60vh; overflow-y: auto; padding: 2px 2px 0; }
/* 1問1答カード: 左に判定スタンプ、右に質問＋回答 */
.qa-item {
    position: relative; display: flex; gap: 12px; align-items: flex-start;
    padding: 12px 14px; margin-bottom: 10px; border: 1px solid var(--line); border-radius: var(--radius);
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply;
    box-shadow: var(--shadow-sm);
}
.qa-item.nice { border-color: var(--gold-soft); box-shadow: var(--shadow-sm), inset 0 0 22px rgba(194,168,95,.12); }
.qa-star { position: absolute; top: -7px; right: -6px; color: var(--gold-lit); font-size: .9rem; filter: drop-shadow(0 1px 2px rgba(0,0,0,.5)); }
/* 判定スタンプ（押印風） */
.verdict {
    flex: 0 0 auto; min-width: 52px; text-align: center; padding: 5px 8px; border-radius: 4px;
    font-size: .78rem; font-weight: 700; letter-spacing: .06em; line-height: 1.3;
    border: 1.5px solid currentColor; transform: rotate(-3deg); box-shadow: inset 0 0 0 1px rgba(255,255,255,.25);
}
.v-yes { color: var(--accent); background: rgba(28,125,118,.08); }
.v-no  { color: var(--red);   background: rgba(158,32,23,.08); }
.v-na  { color: var(--muted); background: rgba(103,78,52,.07); border-style: dashed; }
.qa-main { flex: 1; min-width: 0; }
.qa-q { margin: 0; font-weight: 700; font-size: .96rem; line-height: 1.6; }
.qa-detail { margin: 5px 0 0; color: var(--muted); font-size: .9rem; line-height: 1.6; }
.fa-badge { display: inline-block; background: var(--gold); color: #fff; font-size: .62rem; font-weight: 700; padding: 1px 6px; border-radius: 3px; margin-right: 6px; vertical-align: 1px; }

/* 答え */
.answer-box {
    position: relative; overflow: hidden;
    border: 1px solid var(--accent); border-top: 3px solid var(--accent); border-radius: var(--radius);
    padding: 18px 18px 20px; margin-top: 4px; box-shadow: var(--shadow);
    background-color: var(--surface);
    background-image: var(--grain), var(--laid), radial-gradient(circle at 80% 12%, rgba(28,125,118,.06), transparent 30%);
    background-blend-mode: multiply, normal, normal;
}
.answer-box[x-show] { animation: ds-unseal .55s cubic-bezier(.2,.8,.2,1) both; }
.answer-text { font-size: .9rem; line-height: var(--lh-prose); }
.answer-comment { color: var(--muted); font-size: var(--fs-sm); margin: 14px 0 0; padding-top: 10px; border-top: 1px solid var(--line-soft); font-style: italic; }

/* ---- 答えの封蝋（mondai.twig 専用。.answer-vault 配下に限定して他画面を巻き込まない） ---- */
.answer-vault { position: relative; border-radius: var(--radius); }
/* 封印中は低い固定高にして、答えが長くても封蝋が常に上部の見える位置に来るようにする */
.answer-vault:not(.opened) { max-height: 220px; overflow: hidden; }
.answer-vault.opened { max-height: 6000px; transition: max-height .7s ease; }
.answer-vault .answer-box { filter: blur(7px); transition: filter .6s ease; user-select: none; }
.answer-vault.opened .answer-box { filter: none; user-select: text; animation: ds-unseal .55s cubic-bezier(.2,.8,.2,1) both; }
.answer-seal {
    position: absolute; inset: 0; z-index: 2; width: 100%; cursor: pointer;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
    border: 1px dashed var(--line); border-radius: var(--radius); background: rgba(60,12,14,.04);
    font-family: inherit; color: var(--accent); transition: opacity .45s ease, visibility .45s;
}
.answer-seal:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.answer-vault.opened .answer-seal { opacity: 0; visibility: hidden; }
.wax {
    position: relative; width: 64px; height: 64px; display: grid; place-items: center;
    border-radius: 53% 47% 51% 49% / 49% 52% 48% 51%;
    background: radial-gradient(circle at 35% 28%, #c33728 0%, #9e2017 40%, #7d160f 72%, #560d08 100%);
    box-shadow: inset 0 3px 7px rgba(255,150,120,.4), inset 0 -6px 11px rgba(0,0,0,.5), 0 4px 10px rgba(50,2,2,.5);
    transition: transform .45s cubic-bezier(.3,.7,.2,1), opacity .45s;
}
.wax::after {
    content: ""; position: absolute; inset: -10px; z-index: -1;
    background:
        radial-gradient(circle 23px at 50% 50%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 15px at 24% 32%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 14px at 74% 28%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 13px at 83% 56%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 15px at 60% 81%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 14px at 29% 75%, #8e1a12 99%, transparent 100%),
        radial-gradient(circle 12px at 15% 57%, #8e1a12 99%, transparent 100%);
    background-repeat: no-repeat; filter: blur(1.4px); opacity: .92;
}
.wax-spill {
    position: absolute; inset: -14px -11px -8px -15px; z-index: -2;
    background:
        radial-gradient(circle 27px at 52% 54%, #6c110b 99%, transparent 100%),
        radial-gradient(circle 17px at 30% 38%, #6c110b 99%, transparent 100%),
        radial-gradient(circle 16px at 74% 62%, #6c110b 99%, transparent 100%),
        radial-gradient(circle 14px at 60% 22%, #6c110b 99%, transparent 100%),
        radial-gradient(circle 15px at 41% 82%, #6c110b 99%, transparent 100%),
        radial-gradient(circle 13px at 18% 64%, #6c110b 99%, transparent 100%);
    background-repeat: no-repeat; filter: blur(2px); opacity: .82;
}
.wax::before { content: ""; position: absolute; inset: 8px; border-radius: 50%; border: 1.5px solid rgba(80,8,6,.45); box-shadow: inset 0 1px 2px rgba(0,0,0,.4), 0 1px 1px rgba(255,180,150,.3); }
.wax .emblem { position: relative; z-index: 1; font-size: 1.55rem; font-weight: 700; color: #7d160f; text-shadow: 0 1px 0 rgba(255,170,140,.5), 0 -1px 1px rgba(0,0,0,.45); }
.answer-seal:hover .wax { transform: scale(1.05) rotate(-3deg); }
.answer-seal:active .wax { transform: scale(.94); }
.answer-vault.opened .wax { transform: scale(1.18) rotate(9deg); opacity: 0; }
.seal-caption { font-size: .82rem; font-weight: 700; letter-spacing: .12em; }
.seal-hint { font-size: .7rem; color: var(--muted); letter-spacing: .06em; }

/* ============================================================
   出題者用ツールのタブ（答え／想定問答／ヒント）
   ============================================================ */
.tooltabs-bar {
    position: sticky; top: 0; z-index: 10;
    display: flex; gap: 6px; padding: 8px 0;
    background: var(--paper);
}
.tooltab {
    flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 5px;
    min-height: 44px; padding: 8px 6px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    color: var(--muted); font-family: inherit; font-size: .9rem; font-weight: 700; cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
}
.tooltab.on {
    background: linear-gradient(180deg, #218a82, var(--accent-dark));
    color: var(--accent-ink); border-color: var(--accent-dark);
}
.tooltab-n { font-size: .72rem; font-weight: 700; opacity: .8; }
.tooltab.on .tooltab-n { opacity: .95; }

/* タブ配下のツールはカード上余白を詰める。QA検索はタブと二重固定にしない */
.tooltabs .tool { margin: 4px 0 0; }
.tooltabs .qa-controls { position: static; }

/* ============================================================
   ライブタブ（参加者チャット＋進行メモ）
   通常フロー＝固定要素なし。iOS でキーボードと固定バーの間にできる「隙間」が
   構造的に発生しない（入力欄は普通の要素で、ブラウザが自動でキーボード上へスクロール）。
   ============================================================ */
.tool-live { margin: 4px 0 0; }
.tool-live .chat-list { max-height: 40dvh; } /* 読書ボックス。dvhはURLバーには反応するがキーボードには反応しない＝安全 */
.tool-live .memo-form { margin-top: 0; }
.host-memo .contact-textarea { min-height: 0; }
.live-actions { display: flex; align-items: center; gap: 12px; margin-top: 2px; }
.live-actions .btn { width: auto; flex: 0 0 auto; padding: 11px 22px; }

/* 進行メモを1つの入力ブロックとして枠で囲む（入力とボタンを近づけ、誤タップを防ぐ） */
.live-box { padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.live-box .form-label { margin-bottom: 6px; }
.host-memo .contact-textarea { margin-bottom: 8px; }

/* 解説公開（封蝋）は重要操作。メモと視覚的に分離し封蝋色で目立たせる */
.live-reveal { margin-top: 16px; }
.btn-seal { background-color: var(--red); background-image: none; color: #fff; border-color: var(--red); }
.btn-seal:hover { box-shadow: var(--shadow); }

/* セクション区切り（出題者の操作 ／ 参加者とのやり取り） */
.live-sep { border: 0; border-top: 1px dashed var(--line); margin: 16px 0 4px; }
/* 入力欄がキーボード直上に来た時、着地点を少し上げて見やすく（フォーカス時のscroll-into-view） */
.chat-text, .chat-name-input { scroll-margin-block: 10px 14px; }
/* ライブタブの未読バッジ */
.tooltab-live .chat-unread { margin-left: 6px; }

/* ============================================================
   参加者チャット（出題者の司会バー／参加者ページで共用）
   ============================================================ */
.chat { margin-top: 14px; padding-top: 10px; border-top: 1px solid var(--line-soft); }
.chat-title { margin: 0 0 8px; font-size: .8rem; font-weight: 700; color: var(--muted); letter-spacing: .04em; }

.chat-list {
    display: flex; flex-direction: column; gap: 6px;
    max-height: 30vh; overflow-y: auto; padding: 2px;
    -webkit-overflow-scrolling: touch;
    text-size-adjust: 100%; -webkit-text-size-adjust: 100%;
}
.chat-empty { color: var(--muted); font-size: .8rem; text-align: center; padding: 12px 0; }
.chat-msg {
    position: relative; max-width: 84%; width: fit-content;
    padding: 5px 24px 6px 10px; border-radius: 11px;
    font-size: .8rem; line-height: 1.35; word-break: break-word;
    /* white-space は本文(.chat-body)だけに付ける。吹き出し全体に pre-wrap を付けると
       テンプレートの要素間インデント空白まで描画され、吹き出しが巨大化する。 */
    white-space: normal;
}
.chat-msg .chat-name { display: block; font-size: .62rem; font-weight: 700; opacity: .7; margin-bottom: 1px; }
.chat-msg .chat-body { font-size: .82rem; white-space: pre-wrap; }
.chat-msg.is-guest { align-self: flex-start; background: var(--surface); border: 1px solid var(--line); }
.chat-msg.is-host {
    align-self: flex-end;
    background: linear-gradient(180deg, #218a82, var(--accent-dark));
    color: var(--accent-ink); border: 1px solid var(--accent-dark);
}
/* 出題者の回答ボタン（はい/いいえ/関係なし）。参加者の発言にのみ表示・出題者画面用 */
.verdict-set { display: flex; gap: 5px; margin-top: 6px; flex-wrap: wrap; }
.vbtn {
    padding: 3px 11px; font-size: .72rem; font-weight: 700; font-family: inherit;
    border: 1px solid var(--line); border-radius: var(--radius-pill);
    background: var(--paper); color: var(--muted); cursor: pointer;
}
.vbtn.on-yes { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-dark); }
.vbtn.on-no  { background: var(--red);    color: #fff; border-color: var(--red); }
.vbtn.on-na  { background: var(--muted);  color: #fff; border-color: var(--muted); }
/* 参加者側に表示される判定バッジ（読み取り専用） */
.cv { display: inline-block; align-self: flex-start; margin-top: 5px; padding: 2px 11px; border-radius: var(--radius-pill); font-size: .74rem; font-weight: 700; }
.cv-yes { background: var(--accent); color: var(--accent-ink); }
.cv-no  { background: var(--red);    color: #fff; }
.cv-na  { background: var(--muted);  color: #fff; }
.chat-del {
    position: absolute; top: 2px; right: 3px; width: 19px; height: 19px; padding: 0;
    line-height: 17px; text-align: center; border: 0; border-radius: 50%;
    background: transparent; color: inherit; opacity: .45; font-size: .95rem; cursor: pointer;
}
.chat-del:hover { opacity: 1; }

.chat-input {
    display: flex; gap: 7px; align-items: flex-end; margin-top: 9px;
    padding: 8px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper);
}
.chat-text {
    flex: 1; min-width: 0; min-height: 42px; max-height: 100px; padding: 10px 11px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    /* font-size は16px必須（未満だと iOS がフォーカス時に自動ズームしてしまう） */
    color: var(--text); font-family: inherit; font-size: 16px; line-height: 1.35; resize: none;
}
.chat-text:focus { outline: none; border-color: var(--accent); box-shadow: var(--focus-ring); }
.chat-name-input {
    flex: 0 0 auto; width: 4em; min-width: 0; min-height: 42px; padding: 9px 6px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    /* 同上: iOS の自動ズーム回避のため16px */
    color: var(--text); font-family: inherit; font-size: 16px; text-align: center;
}
.chat-name-input:focus { outline: none; border-color: var(--accent); box-shadow: var(--focus-ring); }
.chat-send {
    flex: 0 0 auto; min-height: 42px; padding: 0 16px;
    background: linear-gradient(180deg, #218a82, var(--accent-dark));
    color: var(--accent-ink); border: 1px solid var(--accent-dark); border-radius: var(--radius);
    font-family: inherit; font-size: .9rem; font-weight: 700; cursor: pointer;
}
.chat-send:disabled { opacity: .6; }
.chat-unread {
    display: inline-block; min-width: 18px; padding: 0 5px; margin-right: 8px;
    background: var(--red); color: #fff; border-radius: var(--radius-pill);
    font-size: .72rem; font-weight: 700; text-align: center;
}

/* 参加者ページの「上手な質問の仕方」ガイド（開閉） */
.q-guide { margin: 18px 0 0; border: 1px solid var(--line-soft); border-radius: var(--radius); background: rgba(255,253,242,.3); }
.q-guide > summary { padding: 11px 14px; cursor: pointer; font-weight: 700; font-size: .9rem; color: var(--accent); list-style: none; }
.q-guide > summary::-webkit-details-marker { display: none; }
.q-guide > summary::before { content: '▸ '; }
.q-guide[open] > summary::before { content: '▾ '; }
.q-guide-body { padding: 0 16px 14px; font-size: .88rem; line-height: 1.7; color: var(--text); }
.q-guide-body p { margin: 8px 0; }
.q-guide-body ul { margin: 8px 0; padding-left: 1.2em; }
.q-guide-body li { margin: 6px 0; }

/* 参加者ページのチャット */
.q-chat { margin: 22px 0 0; }
.q-chat .chat-list { background: rgba(255,253,242,.25); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 8px; min-height: 48px; max-height: 40vh; }

/* ============================================================
   フッター
   ============================================================ */
.footer-skyline { height: 56px; margin-top: 36px; background-image: url(/assets/img/foothed.png); background-position: 50% 100%; background-repeat: repeat-x; background-size: auto 100%; opacity: .9; }
.site-footer { background: #1f1310; margin: 0; padding: 24px 18px 34px; text-align: center; background-image: var(--grain); background-blend-mode: overlay; }
.footer-links { display: flex; flex-direction: column; gap: 11px; margin: 0 0 16px; }
.footer-links a { display: block; padding: 14px; background: rgba(255,253,242,.05); border: 1px solid #5a4636; border-radius: var(--radius); color: #efe2bc; text-decoration: none; font-weight: 700; letter-spacing: .04em; transition: border-color .15s, background .15s, transform .12s; }
.footer-links a:hover { border-color: var(--gold-soft); background: rgba(255,253,242,.1); transform: translateY(-1px); }
.footer-note { color: #a8917c; font-size: .76rem; margin: 0; }
.footer-meta { margin: 0 0 12px; font-size: .8rem; }
.footer-meta a { color: #c9b48f; text-decoration: none; }
.footer-meta a:hover { color: var(--gold-soft); }

/* ---- 静的ドキュメント（プライバシー等）・フォーム ---- */
.doc { line-height: var(--lh-body); }
.doc p { margin: 0 0 14px; }
.doc-h2 { font-size: 1.04rem; font-weight: 700; margin: 26px 0 8px; padding-left: 11px; border-left: 3px solid var(--accent); }
.doc-h3 { font-size: .96rem; font-weight: 700; margin: 18px 0 6px; color: var(--text); }
.doc-list { margin: 0 0 14px; padding-left: 1.3em; }
.doc-list li { margin: 4px 0; }
.doc code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
/* 配信・利用ルールの必須ボックス */
.usage-box { margin: 12px 0 16px; padding: 14px 16px; background-color: var(--surface-2); background-image: var(--grain); background-blend-mode: multiply; border: 1px solid var(--gold-soft); border-radius: var(--radius); }
.usage-box-title { font-weight: 700; color: var(--accent-dark); margin: 0 0 6px !important; }
.usage-box .doc-list { margin-bottom: 0; }
.doc-date { color: var(--muted); font-size: .85rem; margin-top: 24px; }
.doc-aside { margin-top: 28px; padding-top: 8px; border-top: 1px solid var(--line-soft); }

/* ---- あゆみ（年表） ---- */
.timeline { list-style: none; margin: 8px 0 18px; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding: 0 0 18px 30px; }
.tl-item::before { content: ""; position: absolute; left: 2px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--gold-soft); box-shadow: var(--shadow-sm); }
.tl-now::before { background: var(--accent); border-color: var(--accent-dark); }
.tl-year { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .04em; color: var(--accent); margin-bottom: 2px; }
.tl-body strong { display: block; font-size: 1rem; margin-bottom: 2px; }
.tl-body p { margin: 0; }

/* ---- 過去の実績（メディア・コラボ） ---- */
.works-list { margin: 8px 0 18px; }
.work-card { padding: 13px 15px; margin: 0 0 10px; background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply; border: 1px solid var(--line); border-left: 3px solid var(--gold-soft); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.work-title { font-weight: 700; margin: 0 0 4px !important; }
.work-title a { color: var(--text); text-decoration: none; }
.work-title a:hover { color: var(--accent); text-decoration: underline; }
.work-desc { margin: 0 !important; color: var(--muted); font-size: .9rem; }

/* ---- 実況動画（YouTube埋め込み） ---- */
.video-list { display: grid; gap: 18px; margin: 8px 0 18px; }
.video-card { background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.yt-embed { position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000; }
.yt-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.video-title { font-weight: 700; margin: 10px 13px 4px !important; }
.video-author { margin: 0 13px 12px !important; color: var(--muted); font-size: .84rem; }
.video-author a { color: var(--accent); text-decoration: none; }
.video-author a:hover { text-decoration: underline; }
.form-label { display: block; font-size: var(--fs-eyebrow); letter-spacing: var(--ls-label); color: var(--accent); margin: 12px 0 5px; }
.form-label .req { color: var(--red); margin-left: 4px; }
.contact-textarea {
    width: 100%; padding: 12px 14px; margin-bottom: 14px; min-height: 140px; resize: vertical;
    background: var(--paper); border: 1px solid var(--line); border-radius: 5px;
    color: var(--text); font-size: 1rem; font-family: inherit; line-height: 1.8;
    box-shadow: inset 0 1px 3px rgba(80,50,20,.12);
}
.contact-textarea:focus { outline: none; border-color: var(--accent); box-shadow: var(--focus-ring); }
.notice-ok {
    background: rgba(28,125,118,.10); border: 1px solid var(--accent); border-left: 4px solid var(--accent);
    border-radius: var(--radius); padding: 14px 16px; margin-bottom: 16px;
}
.notice-ok p { margin: 0; }
.footer-auth { margin: 12px 0 0; font-size: .8rem; }
.footer-auth a { color: #c9b48f; text-decoration: none; }
.footer-auth a:hover { color: var(--gold-soft); }

/* ============================================================
   ログイン / マイページ
   ============================================================ */
.login-error { background: #f3ddd9; border: 1px solid var(--red); color: var(--red); padding: 10px 14px; border-radius: var(--radius); font-size: .9rem; margin: 0 0 14px; }
.mine-row {
    display: flex; align-items: center; gap: 12px; justify-content: space-between;
    border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 9px;
    background-color: var(--surface); background-image: var(--grain); background-blend-mode: multiply; box-shadow: var(--shadow-sm);
}
.mine-info { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.mine-title { font-weight: 700; color: var(--text); text-decoration: none; }
.mine-title:hover { color: var(--accent); }
.vis-badge { font-size: .68rem; font-weight: 700; padding: 2px 8px; border-radius: 3px; }
.vis-on { background: rgba(28,125,118,.12); color: var(--accent-dark); }
.vis-off { background: var(--surface-2); color: var(--muted); }
.vis-btn { flex: 0 0 auto; min-height: 40px; padding: 8px 14px; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 5px; font-size: .82rem; font-weight: 700; cursor: pointer; font-family: inherit; box-shadow: var(--shadow-sm); }
.vis-btn:hover { border-color: var(--gold-soft); }
.owner-vis { margin-top: 10px; }

/* （AI回答者モードのCSSは機能削除に伴い撤去） */

/* ===== タグ編集（らてらて資格者が難易度・雰囲気などを修正） ===== */
.tag-edit { margin-top: 12px; }
.tag-edit-toggle {
    background: none; border: 1px dashed var(--line); border-radius: var(--radius-pill);
    color: var(--muted); font-size: .76rem; padding: 5px 14px; cursor: pointer; font-family: inherit;
    transition: color .12s, border-color .12s;
}
.tag-edit-toggle:hover { color: var(--accent); border-color: var(--accent); }
.tag-edit-form {
    margin-top: 12px; padding: 16px; background: var(--surface);
    border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.tag-edit-note { margin: 0 0 14px; color: var(--muted); font-size: .8rem; line-height: 1.7; }
.tag-edit-cat { border: none; padding: 0; margin: 0 0 14px; }
.tag-edit-cat legend { padding: 0; margin-bottom: 8px; font-size: .82rem; font-weight: 700; color: var(--text); }
.tag-edit-max { font-size: .68rem; font-weight: 400; color: var(--muted-soft); letter-spacing: .03em; margin-left: 6px; }
.tag-edit-opts { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-opt { position: relative; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.tag-opt input { position: absolute; opacity: 0; width: 0; height: 0; margin: 0; }
.tag-opt span {
    display: inline-block; padding: 8px 14px; font-size: .8rem; line-height: 1.4;
    background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-pill);
    color: var(--text); transition: background .12s, border-color .12s, color .12s;
}
.tag-opt:hover span { border-color: var(--accent); color: var(--accent); }
.tag-opt input:checked + span {
    background: var(--accent); border-color: var(--accent-dark); color: var(--accent-ink); font-weight: 600;
}
.tag-opt input:focus-visible + span { box-shadow: var(--focus-ring); }
.tag-opt-none span { font-style: italic; color: var(--muted); }
.tag-edit-actions { margin-top: 4px; }
.tag-edit-actions .btn { font-size: .85rem; }

/* ===== 横長画面の左右パララックス背景（Claude Design「side-parallax-grand」由来・実サイト翻案） =====
   #wrap(560px羊皮紙パネル)の左右の壁領域に出す装飾。スクロール視差＋揺らぎ＋粒子。
   <1040pxは非表示、prefers-reduced-motionで停止。 */
#wrap { z-index: 1; }
.side-parallax { --amp: 1; --pulse: .16; }

    /* 左右レイヤー */
    .side-decor {
        position: fixed; top: 0; bottom: 0; z-index: 0;
        width: clamp(0px, calc((100vw - 560px) / 2), 620px);
        overflow: hidden; pointer-events: none; display: none;
    }
    @media (min-width: 600px) { .side-decor { display: block; } }
    /* 壁領域いっぱいに広げ、画面端〜パネル際まで満遍なく装飾する */
    .side-decor--left  { left: 0;  background: radial-gradient(ellipse 96% 70% at 42% 48%, rgba(140,52,34,.40), rgba(54,14,12,.26) 60%, transparent 88%); }
    .side-decor--right { right: 0; background: radial-gradient(ellipse 96% 70% at 58% 48%, rgba(140,52,34,.40), rgba(54,14,12,.26) 60%, transparent 88%); }
    .side-decor--left  { -webkit-mask-image: linear-gradient(90deg,  #000 0%, #000 84%, transparent 100%); mask-image: linear-gradient(90deg,  #000 0%, #000 84%, transparent 100%); }
    .side-decor--right { -webkit-mask-image: linear-gradient(270deg, #000 0%, #000 84%, transparent 100%); mask-image: linear-gradient(270deg, #000 0%, #000 84%, transparent 100%); }

    .pl-layer { position: absolute; left: 0; right: 0; top: -10vh; height: 380vh; background-repeat: repeat-y; will-change: transform; backface-visibility: hidden; }
    .pl-particles { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 2; }
    .side-shade { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
    .side-decor--left  .side-shade { background: linear-gradient(90deg,  rgba(16,4,4,.42), transparent 30%); }
    .side-decor--right .side-shade { background: linear-gradient(270deg, rgba(16,4,4,.42), transparent 30%); }

    /* ===== 奥: 菱格子壁紙＋経緯線グリッド ===== */
    .pl-deep {
        background-image:
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='84' height='132' viewBox='0 0 84 132'%3E%3Cg fill='none' stroke='%23c2a85f' stroke-width='1' opacity='0.34'%3E%3Cpath d='M42 22 L62 66 L42 110 L22 66 Z'/%3E%3Cpath d='M42 40 L52 66 L42 92 L32 66 Z'/%3E%3Ccircle cx='42' cy='66' r='2.2' fill='%239c7a30' stroke='none'/%3E%3C/g%3E%3C/svg%3E"),
            repeating-linear-gradient(0deg, rgba(197,170,112,.06) 0 1px, transparent 1px 52px),
            repeating-linear-gradient(90deg, rgba(197,170,112,.05) 0 1px, transparent 1px 52px);
        background-position: center top, 0 0, 0 0; background-size: 84px 132px, auto, auto;
    }

    /* ===== 壁: 書架(左)・緞帳(右) ===== */
    .side-decor--left .pl-wall {
        background-image:
            repeating-linear-gradient(0deg, transparent 0 124px, rgba(0,0,0,.30) 124px 128px, rgba(194,168,95,.18) 128px 130px, transparent 130px 132px),
            repeating-linear-gradient(90deg, rgba(140,44,38,.30) 0 13px, rgba(24,96,90,.26) 13px 25px, rgba(186,150,72,.24) 25px 35px, rgba(40,20,14,.36) 35px 51px, rgba(150,52,40,.24) 51px 64px, rgba(70,52,28,.34) 64px 78px);
        background-position: left top;
    }
    .side-decor--right .pl-wall {
        background-image:
            linear-gradient(90deg, transparent 0 calc(100% - 7px), rgba(240,212,136,.40) calc(100% - 7px) calc(100% - 4px), transparent calc(100% - 4px)),
            repeating-linear-gradient(90deg, rgba(176,40,36,.28) 0 16px, rgba(70,10,12,.44) 16px 27px, rgba(150,26,28,.32) 27px 41px, rgba(58,8,10,.44) 41px 52px),
            linear-gradient(90deg, rgba(0,0,0,.28), transparent 46%);
        background-position: right top;
    }

    /* ===== 中: 航跡星＋巻物(左)/羅針盤メダル(右)＋封蝋紋章 ===== */
    .pl-mid {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='360' viewBox='0 0 220 360'%3E%3Cg transform='translate(110 120)' fill='none' stroke='%23c2a85f' stroke-width='0.8' opacity='0.22'%3E%3Ccircle r='88'/%3E%3Cg%3E%3Cline x1='0' y1='0' x2='88' y2='0'/%3E%3Cline x1='0' y1='0' x2='62' y2='62'/%3E%3Cline x1='0' y1='0' x2='0' y2='88'/%3E%3Cline x1='0' y1='0' x2='-62' y2='62'/%3E%3Cline x1='0' y1='0' x2='-88' y2='0'/%3E%3Cline x1='0' y1='0' x2='-62' y2='-62'/%3E%3Cline x1='0' y1='0' x2='0' y2='-88'/%3E%3Cline x1='0' y1='0' x2='62' y2='-62'/%3E%3Cline x1='0' y1='0' x2='34' y2='82'/%3E%3Cline x1='0' y1='0' x2='82' y2='34'/%3E%3Cline x1='0' y1='0' x2='-34' y2='82'/%3E%3Cline x1='0' y1='0' x2='-82' y2='34'/%3E%3Cline x1='0' y1='0' x2='34' y2='-82'/%3E%3Cline x1='0' y1='0' x2='82' y2='-34'/%3E%3Cline x1='0' y1='0' x2='-34' y2='-82'/%3E%3Cline x1='0' y1='0' x2='-82' y2='-34'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        background-position: center top; background-size: 220px 360px;
    }
    .side-decor--left .pl-mid {
        background-image:
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='660' viewBox='0 0 120 660'%3E%3Cg opacity='0.56'%3E%3Cline x1='44' y1='26' x2='44' y2='118' stroke='%239c7a30' stroke-width='1.4'/%3E%3Crect x='22' y='118' width='44' height='168' rx='3' fill='%23e7dab4' fill-opacity='0.18' stroke='%23c2a85f' stroke-width='1.4'/%3E%3Cellipse cx='44' cy='118' rx='24' ry='6.5' fill='none' stroke='%23c2a85f' stroke-width='1.6'/%3E%3Cellipse cx='44' cy='286' rx='24' ry='6.5' fill='none' stroke='%23c2a85f' stroke-width='1.6'/%3E%3Cg stroke='%239c7a30' stroke-width='1'%3E%3Cline x1='30' y1='150' x2='58' y2='150'/%3E%3Cline x1='30' y1='172' x2='52' y2='172'/%3E%3Cline x1='30' y1='194' x2='57' y2='194'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='760' viewBox='0 0 100 760'%3E%3Cg transform='translate(40 150)'%3E%3Ccircle r='24' fill='%239e2017' fill-opacity='0.46' stroke='%23c2a85f' stroke-width='1.4'/%3E%3Ccircle r='16' fill='none' stroke='%23f0d488' stroke-width='0.8' opacity='0.6'/%3E%3Cpath d='M0 -9 L5 0 L0 9 L-5 0 Z' fill='%23f0d488' opacity='0.55'/%3E%3C/g%3E%3Cg transform='translate(44 560)' fill='none' stroke='%23c2a85f' stroke-width='1.4' opacity='0.55'%3E%3Cpath d='M-18 -20 h36 v16 q0 22 -18 31 q-18 -9 -18 -31 Z'/%3E%3Cline x1='0' y1='-20' x2='0' y2='22'/%3E%3C/g%3E%3C/svg%3E"),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='360' viewBox='0 0 220 360'%3E%3Cg transform='translate(110 120)' fill='none' stroke='%23c2a85f' stroke-width='0.8' opacity='0.22'%3E%3Ccircle r='88'/%3E%3Cg%3E%3Cline x1='0' y1='0' x2='88' y2='0'/%3E%3Cline x1='0' y1='0' x2='62' y2='62'/%3E%3Cline x1='0' y1='0' x2='0' y2='88'/%3E%3Cline x1='0' y1='0' x2='-62' y2='62'/%3E%3Cline x1='0' y1='0' x2='-88' y2='0'/%3E%3Cline x1='0' y1='0' x2='-62' y2='-62'/%3E%3Cline x1='0' y1='0' x2='0' y2='-88'/%3E%3Cline x1='0' y1='0' x2='62' y2='-62'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        background-position: left 18px top 60px, left 14px top 360px, center top; background-size: 120px 660px, 100px 760px, 220px 360px;
    }
    .side-decor--right .pl-mid {
        background-image:
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='130' height='700' viewBox='0 0 130 700'%3E%3Cg transform='translate(65 150)' opacity='0.58'%3E%3Ccircle r='54' fill='none' stroke='%23c2a85f' stroke-width='1.6'/%3E%3Ccircle r='41' fill='none' stroke='%239c7a30' stroke-width='1'/%3E%3Cg fill='%23c2a85f' fill-opacity='0.5' stroke='%23c2a85f' stroke-width='0.7'%3E%3Cpath d='M0 -48 L8 0 L0 48 L-8 0 Z'/%3E%3Cpath d='M-48 0 L0 -8 L48 0 L0 8 Z'/%3E%3C/g%3E%3Cg stroke='%23c2a85f' stroke-width='0.8' opacity='0.7'%3E%3Cpath d='M-34 -34 L34 34 M34 -34 L-34 34'/%3E%3C/g%3E%3Ccircle r='3.4' fill='%231c7d76'/%3E%3C/g%3E%3C/svg%3E"),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='760' viewBox='0 0 100 760'%3E%3Cg transform='translate(60 560)'%3E%3Ccircle r='24' fill='%239e2017' fill-opacity='0.46' stroke='%23c2a85f' stroke-width='1.4'/%3E%3Ccircle r='16' fill='none' stroke='%23f0d488' stroke-width='0.8' opacity='0.6'/%3E%3Cpath d='M0 -9 L5 0 L0 9 L-5 0 Z' fill='%23f0d488' opacity='0.55'/%3E%3C/g%3E%3C/svg%3E"),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='360' viewBox='0 0 220 360'%3E%3Cg transform='translate(110 240)' fill='none' stroke='%23c2a85f' stroke-width='0.8' opacity='0.2'%3E%3Ccircle r='88'/%3E%3Cg%3E%3Cline x1='0' y1='0' x2='88' y2='0'/%3E%3Cline x1='0' y1='0' x2='62' y2='62'/%3E%3Cline x1='0' y1='0' x2='0' y2='88'/%3E%3Cline x1='0' y1='0' x2='-62' y2='62'/%3E%3Cline x1='0' y1='0' x2='-88' y2='0'/%3E%3Cline x1='0' y1='0' x2='62' y2='-62'/%3E%3Cline x1='0' y1='0' x2='0' y2='-88'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        background-position: right 22px top 90px, right 14px top 360px, center top; background-size: 130px 700px, 100px 760px, 220px 360px;
    }

    /* ===== 手前: 燭台(左)/ブラケット(右)＋マーキー電飾(内縁) ===== */
    .side-decor--left .pl-near {
        background-image:
            radial-gradient(circle 2.4px at calc(100% - 18px) 13px, rgba(255,228,150,.85) 0 2.4px, transparent 3px),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='470' viewBox='0 0 120 470'%3E%3Cg fill='none' stroke='%23b9933f' stroke-width='2' stroke-linecap='round' opacity='0.6'%3E%3Cpath d='M30 446 h44 M52 446 V250'/%3E%3Cpath d='M52 300 q-28 -6 -36 -38 M16 262 V232'/%3E%3Cpath d='M52 300 q28 -6 36 -38 M88 262 V232'/%3E%3Cpath d='M52 250 V222'/%3E%3Cpath d='M8 232 h16 M44 222 h16 M80 232 h16'/%3E%3C/g%3E%3Cg fill='%23f0d488' opacity='0.66'%3E%3Cpath d='M16 232 q5 -11 0 -20 q-5 11 0 20Z'/%3E%3Cpath d='M52 222 q5 -12 0 -22 q-5 12 0 22Z'/%3E%3Cpath d='M88 232 q5 -11 0 -20 q-5 11 0 20Z'/%3E%3C/g%3E%3C/svg%3E");
        background-repeat: repeat-y, repeat-y; background-size: 100% 26px, 120px 470px; background-position: 0 0, left 16px top 0;
    }
    .side-decor--right .pl-near {
        background-image:
            radial-gradient(circle 2.4px at 18px 13px, rgba(255,228,150,.85) 0 2.4px, transparent 3px),
            url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='440' viewBox='0 0 96 440'%3E%3Cg fill='none' stroke='%23c2a85f' stroke-width='1.7' stroke-linecap='round' opacity='0.7'%3E%3Cpath d='M90 250 q-40 4 -52 -22'/%3E%3Cpath d='M90 250 q-30 16 -44 8'/%3E%3Cpath d='M38 228 l0 -30'/%3E%3Cpath d='M27 198 l22 0'/%3E%3C/g%3E%3Cpath d='M38 198 q8 -13 0 -24 q-8 13 0 24Z' fill='%23f0d488' opacity='0.7'/%3E%3C/svg%3E");
        background-repeat: repeat-y, repeat-y; background-size: 100% 26px, 96px 440px; background-position: 0 0, right 16px top 0;
    }

    /* ===== 前景: 回転羅針盤・揺れる房・揺れる蔦（離散） ===== */
    .orn { position: absolute; pointer-events: none; }
    .orn-compass { width: 132px; height: 132px; }
    .side-decor--left  .orn-compass { left: var(--x); } .side-decor--right .orn-compass { right: var(--x); }
    .orn-compass .spin { width: 100%; height: 100%; transform-origin: 50% 50%; }
    .orn-compass.c1 { --x: 6%;  top: 130px; } .orn-compass.c2 { --x: 52%; top: 760px; } .orn-compass.c3 { --x: 30%; top: 1420px; }
    .orn-tassel { width: 40px; height: 120px; }
    .side-decor--left  .orn-tassel { right: 26px; transform-origin: top center; }
    .side-decor--right .orn-tassel { left: 26px; transform-origin: top center; }
    .orn-tassel.t1 { top: 70px; } .orn-tassel.t2 { top: 980px; } .orn-tassel.t3 { top: 1890px; }
    .orn-ivy { width: 70px; height: 340px; transform-origin: top center; }
    .side-decor--left  .orn-ivy { left: 4px; } .side-decor--right .orn-ivy { right: 4px; }
    .orn-ivy.v1 { top: 420px; } .orn-ivy.v2 { top: 1480px; } .orn-ivy.v3 { top: 2540px; }

    /* ===== 灯り: 蝋燭の光（明滅） ===== */
    .pl-glow {
        background-image: radial-gradient(ellipse 110px 120px at 52px 212px, rgba(255,190,100,.56), transparent 70%), radial-gradient(ellipse 230px 280px at 52px 212px, rgba(220,90,40,.26), transparent 72%);
        background-size: 100% 470px; background-repeat: repeat-y; mix-blend-mode: screen;
    }
    .side-decor--right .pl-glow {
        background-image: radial-gradient(ellipse 110px 120px at calc(100% - 52px) 212px, rgba(255,190,100,.56), transparent 70%), radial-gradient(ellipse 230px 280px at calc(100% - 52px) 212px, rgba(220,90,40,.26), transparent 72%);
    }

    /* ===== 電飾の流れ（チェイス） ===== */
    .pl-marquee {
        background-image: radial-gradient(circle 4.4px at calc(100% - 18px) 13px, rgba(255,214,120,.95) 0 4px, transparent 7px);
        background-size: 100% 26px; background-repeat: repeat-y; mix-blend-mode: screen;
        -webkit-mask-image: linear-gradient(0deg, transparent, #000 12%, transparent 26%); mask-image: linear-gradient(0deg, transparent, #000 12%, transparent 26%);
        -webkit-mask-size: 100% 240px; mask-size: 100% 240px; -webkit-mask-repeat: repeat-y; mask-repeat: repeat-y;
    }
    .side-decor--right .pl-marquee { background-image: radial-gradient(circle 4.4px at 18px 13px, rgba(255,214,120,.95) 0 4px, transparent 7px); }

    /* ===== アニメ（reduce 以外） ===== */
    @keyframes g-flicker { 0%,100% { opacity: calc(.74 + var(--pulse)*.5); } 24% { opacity: 1; } 56% { opacity: .82; } 80% { opacity: .96; } }
    @keyframes g-spin { to { transform: rotate(360deg); } }
    @keyframes g-marquee { to { -webkit-mask-position-y: 240px; mask-position-y: 240px; } }
    @media (prefers-reduced-motion: no-preference) {
        .pl-glow { animation: g-flicker 4.2s ease-in-out infinite; }
        .side-decor--right .pl-glow { animation-delay: 1.1s; }
        .orn-compass .spin { animation: g-spin 54s linear infinite; }
        .side-parallax[data-motion="3"] .orn-compass .spin { animation-duration: 30s; }
        .side-parallax[data-motion="1"] .orn-compass .spin { animation-duration: 90s; }
        .pl-marquee { animation: g-marquee 1s steps(1) infinite; }
        .side-parallax[data-motion="3"] .pl-marquee { animation-duration: .55s; }
        .side-parallax[data-motion="1"] .pl-marquee { animation-duration: 1.8s; }
    }