:root{--ink:#171717;--muted:#626262;--line:#dedede;--surface:#f4f4f4;--accent:#171717;--page:1240px}
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    @media(min-width:1450px){header{padding-top:48px}.gallery{gap:42px 28px}}
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    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

    /* ==== site_v2差分（イロミ仕様書_v2_テンプレ差分_2026-09-24.md準拠） ==== */
    /* §5-C: 16:9サムネ（テンプレは1:1前提） */
    .thumb{aspect-ratio:16/9}
    @media(max-width:540px){.thumb{aspect-ratio:16/9}}
    /* §9-1: 英字タイトルは単語境界でのみ折り返す（anywhereだと単語途中で割れる） */
    .card h2{overflow-wrap:normal;word-break:normal}
    /* §9-2: 日本語括弧区間は折り返さない */
    .nowrap-suffix{white-space:nowrap}

    /* 複数タグ対応（2026-09-24追加。色は増やさず既存.tagを並べるだけ・8pxグリッド準拠） */
    .card-bottom{flex-wrap:wrap;row-gap:8px}
    .tags{display:flex;flex-wrap:wrap;gap:8px;min-width:0}

    /* §5: プレースホルダー（作例準備中・単体では完成しない）新色は足さない */
    .thumb-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;width:100%;height:100%;color:var(--muted)}
    .thumb-placeholder svg{width:48px;height:48px;stroke:var(--muted)}
    .thumb-placeholder .placeholder-caption{font-size:13px;color:var(--muted);text-align:center;line-height:1.5;padding:0 8px}
    .detail-visual .thumb-placeholder svg{width:64px;height:64px}
    .detail-visual .thumb-placeholder{padding:40px 12px}

    /* §7: facts欄下の別枠（使い方・準備するもの・確認ポイント） */
    .fact-note{margin:0 0 22px}
    .fact-note-label{font-size:13px;font-weight:700;margin:0 0 8px}
    .fact-note-body{font-size:13px;color:var(--muted);margin:0;white-space:pre-line;line-height:1.7}
    .fact-note-sub{font-size:13px;color:var(--muted);margin:8px 0 0}
    .fact-list{font-size:13px;color:var(--muted);margin:0;padding-left:18px;line-height:1.7}
    .fact-list li{margin:0 0 2px}
    .facts dt[hidden],.facts dd[hidden]{display:none}

    /* §6: 施錠パネル（色は足さない。太い枠線とはっきりした黒文字でコントラストをつける） */
    .lock-panel-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;margin:0 0 8px}
    .lock-svg{display:inline-flex;width:20px;height:20px;flex:none}
    .lock-svg svg{width:100%;height:100%;stroke:var(--ink)}
    .lock-panel-text{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 16px}
    .lock-panel-links{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}
    .lock-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .lock-form input{min-height:44px;min-width:0;flex:1 1 200px;border:1px solid var(--line);border-radius:5px;padding:0 16px;background:var(--surface);color:var(--ink)}
    .lock-form input:focus-visible{outline:3px solid #3678cc;outline-offset:2px}
    .lock-form input.error{border-color:var(--ink)}
    .lock-panel-error{font-size:13px;color:var(--ink);border:1px solid var(--ink);border-radius:5px;padding:8px 12px;margin:8px 0 0}

    /* 一覧側の施錠カード（ロックアイコンの代わりに文言も添える） */
    .card-locked .card-bottom .open-label{font-weight:700}

    footer .foot-sub{padding-top:10px}
    .link-reset{background:none;border:0;padding:0;font-size:13px;color:var(--muted);text-decoration:underline;text-underline-offset:3px;min-height:44px}

    /* テンプレのモバイルh1は「PROMPT LIBRARY」等の短い英字タイトル前提でwhite-space:nowrap。
       旧タイトル「たーやの9in1プロンプト集」は幅390pxでnowrapのままだとはみ出す（実測383px>コンテナ350px）ため、
       site_v2のタイトルだけ折り返しを許可する（Playwright実測で解消確認済み・2026-09-24）。
       タイトルを「9in1プロンプト集」に短縮した後も同じ折り返し許可設定のまま残す（2026-09-24再修正）。 */
    @media(max-width:540px){h1{white-space:normal;word-break:keep-all;overflow-wrap:normal}.filter{word-break:keep-all;padding:7px 6px;font-size:13px}}

    /* ==== サイト全体入口ゲート（2026-09-24追加。色は増やさず既存トークンのみ使用） ==== */
    .gate-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:32px 20px;background:#fff}
    .gate-card{width:100%;max-width:420px;border:1px solid var(--line);border-radius:9px;padding:40px 32px;box-shadow:0 24px 100px #0002}
    .gate-masthead{justify-content:center;margin-bottom:24px}
    .gate-title{font-family:Arial,Helvetica,sans-serif;font-size:clamp(24px,5vw,32px);line-height:1.3;letter-spacing:-.03em;margin:0 0 16px;font-weight:900;text-align:center;word-break:keep-all;overflow-wrap:normal}
    .gate-text{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 28px;text-align:center}
    .gate-form{display:flex;flex-direction:column;gap:12px}
    .gate-form input{min-height:44px;border:1px solid var(--line);border-radius:5px;padding:0 16px;background:var(--surface);color:var(--ink)}
    .gate-form input:focus-visible{outline:3px solid #3678cc;outline-offset:2px}
    .gate-form input.error{border-color:var(--ink);border-width:2px}
    .gate-form button{width:100%}
    .gate-error{font-size:13px;color:var(--ink);border:1px solid var(--ink);border-radius:5px;padding:8px 12px;margin:14px 0 0;text-align:center}
    @media(max-width:540px){.gate-card{padding:28px 22px}}