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

    :root {
      /* 実際に見えている画面の高さ。web/bootstrap/viewport-height.js が実測で上書きする */
      --dm-app-h: 100dvh;
      --accent: #e5560a;
      --accent-hover: #c44a05;
      --bg: #eef1f5;
      --text: #1d2733;
      --text-dim: #5d6b7d;
      --panel: #ffffff;
      --border: #d8dfe9;
      --builder-header-from: #243b55;
      --builder-header-to:   #3b6ea5;
      --builder-surface:     rgba(255, 255, 255, 0.9);
      --builder-border:      rgba(59, 110, 165, 0.28);
      --civ-fire:   #e35d2b;
      --civ-water:  #3d7fd4;
      --civ-nature: #4a9a52;
      --civ-light:  #c9a83d;
      --civ-dark:   #6d5494;
      --civ-multi:  #8a8494;
      --card-back-image: url('../../card-back-dm-terminal.webp');

      /* デザイントークン（UIリニューアル基盤） */
      --secondary: #3b6ea5;        /* 情報系ボタン・リンク */
      --secondary-hover: #315d8c;
      --success: #3f7a4f;          /* 決定・完了系 */
      --success-hover: #346843;
      --danger: #b84545;           /* 削除・退出系 */
      --danger-hover: #9a3a3a;
      --neutral: #68717f;          /* undo等の控えめ操作 */
      --neutral-hover: #58606d;
      --surface: #ffffff;          /* 最前面パネル（モーダル等） */
      --bg-gradient: linear-gradient(165deg, #f4f6fa 0%, #e8edf4 55%, #eef1f5 100%);

      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;

      --shadow-1: 0 1px 2px rgba(23,32,46,0.10), 0 1px 3px rgba(23,32,46,0.06);
      --shadow-2: 0 4px 10px rgba(23,32,46,0.14), 0 2px 4px rgba(23,32,46,0.08);
      --shadow-3: 0 14px 34px rgba(23,32,46,0.20), 0 4px 10px rgba(23,32,46,0.10);
      --ring: 0 0 0 3px rgba(244,96,12,0.22);

      /* 盤面カード専用の影（ライト卓面で輪郭を締める。パネル用shadow-*より濃い） */
      --card-shadow: 0 2px 5px rgba(23,32,46,0.22), 0 1px 2px rgba(23,32,46,0.14);
      --card-shadow-hover: 0 10px 22px rgba(23,32,46,0.26), 0 3px 8px rgba(23,32,46,0.14);

      /* ライト卓面テーマ（対戦盤面専用） */
      --table-bg: radial-gradient(ellipse at 50% 35%, #f7f9fc 0%, #e6ebf3 55%, #d9e0eb 100%);
      --table-well: rgba(52, 74, 106, 0.06);        /* 自分側ゾーンのくぼみ地 */
      --table-well-opp: rgba(90, 100, 120, 0.08);   /* 相手側ゾーン（わずかに寒色） */
      --table-well-mana: rgba(95, 143, 106, 0.10);  /* マナ行のtint（緑系） */
      --table-well-shield: rgba(90, 125, 154, 0.10);/* シールド行のtint（青系） */
      --table-line: rgba(52, 74, 106, 0.20);        /* 卓上の罫線・ゾーン枠 */
      --table-label: #5d6b7d;                       /* ゾーンラベル・補助テキスト */
      --table-chip: rgba(255, 255, 255, 0.88);      /* 卓上に浮くUIチップ・パネル地 */
      /* 卓面の質感: 極薄SVGノイズ＋四隅ビネット（--table-bgへ重ね掛け） */
      --table-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
      --table-vignette: radial-gradient(ellipse at 50% 42%, rgba(23,32,46,0) 62%, rgba(23,32,46,0.03) 100%);

      --dur-fast: 0.15s;
      --dur-normal: 0.28s;
      --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
      --ease-spring: cubic-bezier(0.34, 1.4, 0.5, 1);

      /* タイポグラフィ：font-size 6段トークン */
      --fs-xs: 0.72rem;   /* 極小ラベル・バッジ */
      --fs-sm: 0.8rem;    /* ラベル・補助テキスト */
      --fs-md: 0.9rem;    /* 本文・ボタン */
      --fs-lg: 1rem;      /* 強調・小見出し */
      --fs-xl: 1.2rem;    /* 見出し */
      --fs-2xl: 1.9rem;   /* タイトル */

      /* タイポグラフィ：Webフォントトークン */
      --font-body: 'Zen Kaku Gothic New', 'Segoe UI', 'Hiragino Sans', sans-serif;
      --font-num: 'Oswald', 'Zen Kaku Gothic New', sans-serif;
    }

    body {
      font-family: var(--font-body);
      background: var(--bg);
      color: var(--text);
    }

    /* 認証画面 */
    #auth-screen {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: linear-gradient(165deg, #f4f6fa 0%, #e8edf4 55%, #eef1f5 100%);
      z-index: 1000;
    }

    #auth-screen.active {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 20px;
    }

    .auth-box {
      background: var(--panel);
      border-radius: 16px;
      padding: 32px 32px 28px;
      box-shadow: var(--shadow-3);
      border: 1px solid var(--border);
      max-width: 420px;
      width: 92%;
    }

    .auth-box h1 {
      text-align: center;
      margin-bottom: 6px;
      color: var(--accent);
      font-size: var(--fs-2xl);
      font-weight: 620;
      letter-spacing: 0.03em;
    }

    .auth-box p.subtitle {
      text-align: center;
      margin-bottom: 20px;
      color: var(--text-dim);
      font-size: var(--fs-md);
    }

    .auth-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .auth-form input {
      padding: 14px 12px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: var(--fs-lg);
      background: #fff;
      outline: none;
      transition: border-color 0.15s, box-shadow 0.15s, background-color 0.15s;
    }

    .auth-form input:focus {
      border-color: var(--accent);
      box-shadow: var(--ring);
      background: #ffffff;
    }

    .auth-form button {
      padding: 12px;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      font-size: var(--fs-lg);
      font-weight: 600;
      transition: all 0.2s;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--accent-hover);
    }

    .btn-secondary {
      background: var(--border);
      color: var(--text);
    }

    .btn-secondary:hover {
      background: #d0d8d4;
    }

    .auth-tabs {
      display: flex;
      gap: 6px;
      margin-bottom: 20px;
    }

    .auth-tab {
      flex: 1;
      padding: 10px;
      background: var(--panel);
      border: 2px solid transparent;
      border-radius: 6px;
      cursor: pointer;
      font-weight: 600;
      text-align: center;
      transition: all 0.2s;
    }

    .auth-tab.active {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    .auth-form-section {
      display: none;
    }

    .auth-form-section.active {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    /* 認証画面の出現アニメーション */
    @keyframes authBoxIn {
      from { opacity: 0; transform: translateY(12px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    @keyframes authFormIn {
      from { opacity: 0; transform: translateY(6px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    #auth-screen.active .auth-box {
      animation: authBoxIn var(--dur-normal) var(--ease-out) backwards;
    }

    .auth-form-section.active {
      animation: authFormIn var(--dur-fast) var(--ease-out) backwards;
    }

    .auth-box h1::after {
      content: '';
      display: block;
      width: 56px;
      height: 3px;
      margin: 8px auto 0;
      border-radius: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    }

    .auth-guest-note {
      text-align: center;
      color: var(--text-dim);
      margin-bottom: 12px;
    }

    .error-msg {
      color: #33415a;
      font-size: var(--fs-md);
      text-align: center;
      padding: 8px;
      background: #ffffff;
      border-radius: 4px;
      display: none;
    }

    .error-msg.show {
      display: block;
    }

    .api-status {
      margin: 0 0 14px;
      padding: 8px 10px;
      border: 1px solid var(--border);
      border-radius: 4px;
      background: #ffffff;
      color: #33415a;
      font-size: var(--fs-sm);
      line-height: 1.35;
      word-break: break-all;
    }

    .api-status.ok {
      background: #edf6ef;
      border-color: #b9d3bf;
      color: #416d49;
    }

    .api-status.warn {
      background: #ffffff;
      border-color: #e4e9f1;
      color: #33415a;
    }

    /* ゲーム画面 */
    #app-desktop,
    #app-mobile {
      display: none;
    }

    #app-desktop.active {
      display: block;
    }

    #app-mobile.active {
      display: block;
    }

    .dg-hand-zone,
    .dg-play-zone,
    .dg-shield-zone,
    .dg-grave-zone,
    .dg-back-cards {
      display: flex;
      flex-wrap: nowrap;
      align-items: center;
      gap: 4px;
      height: 100%;
      align-self: stretch;
    }

    .dg-card-chip {
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: var(--text);
      border-radius: 4px;
      font-size: 0.6rem;
      padding: 2px;
      user-select: none;
    }

    .dg-card-chip.hand {
      aspect-ratio: 5/7;
      background: linear-gradient(145deg, #b8c8d0 0%, #c8d4dc 100%);
      border: 1px solid #9fb0b8;
      cursor: grab;
      flex-shrink: 0;
      transition: transform 0.1s;
    }

    .dg-card-chip.battle {
      aspect-ratio: 5/7;
      background: #f4f6fa;
      border: 1px solid #d8dfe9;
      cursor: pointer;
      flex-shrink: 0;
    }

    .dg-card-chip.mana {
      aspect-ratio: 5/7;
      background: #dce4e8;
      border: 1px solid #9fb0b8;
      cursor: pointer;
      flex-shrink: 0;
    }

    .dg-card-chip.shield {
      aspect-ratio: 5/7;
      background-image: var(--card-back-image);
      background-size: cover;
      background-position: center;
      border: 1px solid var(--secondary);
      color: transparent;
      flex-shrink: 0;
    }
    .dg-card-chip.crystal-mana,
    .mg-card-chip.crystal-mana {
      background-image: var(--card-back-image);
      background-position: center;
      background-size: cover;
    }

    .dg-card-chip.grave {
      width: 40px;
      height: 40px;
      background: #e2e2e2;
      border: 1px solid #c7c7c7;
      font-size: 0.58rem;
    }

    .dg-back-card {
      aspect-ratio: 5/7;
      flex-shrink: 0;
      border-radius: 4px;
      border: 1px solid rgba(255,255,255,0.25);
      background-image: var(--card-back-image);
      background-size: cover;
      background-position: center;
    }

    .dg-back-empty {
      font-size: var(--fs-xs);
      color: var(--text-dim);
    }

    .dg-more-chip {
      height: 40px;
      min-width: 32px;
      padding: 0 6px;
      border-radius: 4px;
      background: #d7e0e7;
      color: #41515f;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: var(--fs-xs);
      font-weight: 700;
    }

    .dg-btn {
      flex: 1;
      min-width: 60px;
      padding: 8px;
      border: none;
      border-radius: 4px;
      color: #fff;
      cursor: pointer;
    }

    .dg-btn.draw { background: var(--secondary); }
    .dg-btn.end { background: var(--success); }
    .dg-btn.battle-grave { background: #5d6b7d; }
    .dg-btn.mana-grave { background: #7a7f9a; }
    .dg-btn.grave-return { background: #7a8f8a; }
    .dg-btn.undo { background: var(--neutral); }
    .dg-btn.back { background: var(--danger); }

    .dg-chat-title {
      font-size: var(--fs-sm);
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }

    .dg-turn-toast {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      padding: 10px 16px;
      background: #2f7b56;
      color: #fff;
      border-radius: 999px;
      font-weight: 700;
      box-shadow: 0 8px 18px rgba(0,0,0,0.2);
      z-index: 2500;
      opacity: 0;
      transition: opacity .2s;
      pointer-events: none;
    }

    /* SPゲームボード（Feature F: inline style のクラス化） */

    /* 長押しテキスト選択・コールアウト防止 */
    .mg-root,
    .mg-card-chip,
    .mg-hand-row,
    .mg-card-grid,
    .mg-zone-section,
    .mg-ribbon,
    .mg-zone-menu-sheet {
      -webkit-touch-callout: none;
      -webkit-user-select: none;
      user-select: none;
    }

    /* ゲームログ */
    .mg-game-log {
      margin-top: 8px;
      padding: 6px 8px;
      background: rgba(0,0,0,0.06);
      border-radius: 6px;
      max-height: 120px;
      overflow-y: auto;
    }

    .mg-log-entry {
      font-size: var(--fs-xs);
      color: var(--text-dim);
      padding: 2px 0;
      border-bottom: 1px solid rgba(0,0,0,0.06);
      line-height: 1.4;
      word-break: break-word;
    }

    .mg-log-entry:last-child {
      border-bottom: none;
    }

    /* アクションシートボタン追加分 */
    .mg-sheet-btn.shield { background: #4a90d9; color: #fff; }
    .mg-sheet-btn.deck   { background: #6b7b8a; color: #fff; }
    .mg-sheet-btn.grave  { background: #8a5a8a; color: #fff; }
    .mg-sheet-btn.detail { background: var(--secondary); color: #fff; }

    .mg-root {
      display: flex;
      flex-direction: column;
      height: 100vh;
      background: var(--bg);
      color: var(--text);
    }

    .mg-header {
      background: var(--secondary);
      color: #fff;
      padding: 12px;
      font-weight: 600;
      text-align: center;
      font-size: var(--fs-md);
    }

    .mg-turn-state.mine {
      color: #d7fff2;
    }

    .mg-turn-state.opponent {
      color: #e8f7f1;
    }

    .mg-online-meta {
      padding: 8px 12px;
      background: #e8efe8;
      font-size: var(--fs-sm);
      color: var(--text);
    }

    .mg-opp-wrap {
      padding: 8px 12px;
      background: #f6f8fa;
      border-bottom: 1px solid #d5dde4;
    }

    .mg-opp-title {
      font-size: var(--fs-sm);
      font-weight: 700;
      color: #495a66;
      margin-bottom: 6px;
    }

    .mg-opp-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6px;
    }

    .mg-opp-panel {
      padding: 6px;
      background: #f1f5f8;
      border: 1px solid #d7e0e8;
      border-radius: 5px;
    }

    .mg-opp-grave {
      margin-top: 6px;
    }

    .mg-opp-label {
      font-size: 0.68rem;
      color: #5b6a75;
      margin-bottom: 3px;
    }

    .mg-main {
      flex: 1;
      display: flex;
      flex-direction: column;
      overflow-y: auto;
      padding: 12px;
      gap: 12px;
    }

    .mg-me-wrap {
      background: var(--panel);
      border: 1px solid #d4dcda;
      border-radius: 8px;
      padding: 10px;
    }

    .mg-me-title {
      font-size: var(--fs-sm);
      color: var(--text);
      font-weight: 700;
    }

    .mg-zone-section {
      border-radius: 8px;
      padding: 12px;
      border: 1px solid var(--border);
      background: #f4f6fa;
    }

    .mg-zone-section.mana,
    .mg-zone-section.shield {
      background: #eef2f4;
      border-color: #b8c8d4;
    }

    .mg-zone-section.grave {
      background: #f0f0f0;
      border-color: #d7d7d7;
    }

    .mg-zone-title {
      font-size: var(--fs-md);
      color: var(--text);
      margin-bottom: 8px;
      font-weight: 600;
    }

    .mg-card-grid,
    .mg-back-cards,
    .mg-hand-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .mg-card-grid.center {
      justify-content: center;
    }

    .mg-card-chip {
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: var(--text);
      user-select: none;
      padding: 4px;
    }

    .mg-card-chip.battle {
      width: 68px;
      height: 95px;
      font-size: 0.62rem;
    }

    .mg-card-chip.mana {
      width: 58px;
      height: 81px;
      font-size: 0.62rem;
    }

    .mg-card-chip.battle {
      background: #f4f6fa;
      border: 1px solid #d8dfe9;
    }

    .mg-card-chip.mana {
      background: #dce4e8;
      border: 1px solid #9fb0b8;
    }

    .mg-card-chip.shield {
      width: 58px;
      height: 81px;
      flex-shrink: 0;
      background-image: var(--card-back-image);
      background-size: cover;
      background-position: center;
      border: 1px solid var(--secondary);
      color: transparent;
    }

    .mg-card-chip.grave {
      width: 40px;
      height: 40px;
      background: #e2e2e2;
      border: 1px solid #c7c7c7;
      font-size: 0.62rem;
    }

    .mg-card-chip.hand {
      width: 68px;
      height: 95px;
      background: linear-gradient(145deg, #c8d4dc 0%, #dce4e8 100%);
      border: 1px solid #9fb0b8;
      border-radius: 6px;
      font-size: 0.65rem;
      cursor: pointer;
      transition: transform 0.15s;
    }

    .mg-card-chip.hand:active {
      transform: translateY(1px);
    }

    .mg-back-card {
      width: 20px;
      height: 30px;
      border-radius: 3px;
      border: 1px solid rgba(255,255,255,0.3);
      background-image: var(--card-back-image);
      background-size: cover;
      background-position: center;
    }

    .mg-back-empty {
      font-size: var(--fs-xs);
      color: var(--text-dim);
    }

    .mg-more-chip {
      height: 30px;
      min-width: 24px;
      padding: 0 4px;
      border-radius: 3px;
      background: #d8e1e6;
      color: #42525f;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.68rem;
      font-weight: 700;
    }

    .mg-hand-dock {
      background: var(--panel);
      border-top: 1px solid var(--border);
      padding: 12px;
      max-height: 150px;
      overflow-x: auto;
    }

    .mg-hand-title {
      font-size: var(--fs-md);
      color: var(--text-dim);
      margin-bottom: 8px;
    }

    .mg-hand-row {
      overflow-x: auto;
      padding-bottom: 8px;
      flex-wrap: nowrap;
    }

    .mg-action-row {
      background: var(--panel);
      padding: 12px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      border-top: 1px solid var(--border);
    }

    .mg-btn {
      flex: 1;
      min-width: 70px;
      padding: 12px;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      color: #fff;
      font-weight: 600;
      font-size: var(--fs-md);
    }

    .mg-btn.battle-grave,
    .mg-btn.mana-grave,
    .mg-btn.grave-return {
      font-size: var(--fs-md);
    }

    .mg-btn.draw { background: var(--secondary); }
    .mg-btn.end { background: var(--success); }
    .mg-btn.battle-grave { background: #5d6b7d; }
    .mg-btn.mana-grave { background: #7a7f9a; }
    .mg-btn.grave-return { background: #7a8f8a; }
    .mg-btn.undo { background: var(--neutral); }
    .mg-btn.back { background: var(--danger); }

    .mg-turn-toast {
      position: fixed;
      left: 50%;
      top: 12px;
      transform: translateX(-50%);
      padding: 9px 14px;
      background: #2f7b56;
      color: #fff;
      border-radius: 999px;
      font-weight: 700;
      font-size: var(--fs-sm);
      z-index: 2600;
      opacity: 0;
      transition: opacity .2s;
      pointer-events: none;
      box-shadow: 0 8px 16px rgba(0,0,0,0.18);
    }