/* site-src/content/collaborator.html の <style> をそのまま取り出したもの（書体名のみ置換）。生成物なので編集しない。portal-theme.css が上書きする。 */
:root {
    --ocean-deep: #0A2463;
    --ocean-mid: #1E5FA8;
    --ocean-light: #3AAFDC;
    --ocean-foam: #A8E6F0;
    --coral: #FF6B6B;
    --amber: #FFD166;
    --mint: #06D6A0;
    --lavender: #C77DFF;
    --sand: #FFF3E0;
    --white: #FFFFFF;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--sand);
    color: #1a1a2e;
    overflow-x: hidden;
  }

  /* ===== NAV ===== */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 36, 99, 0.95);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 3rem;
    border-bottom: 2px solid rgba(58, 175, 220, 0.4);
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
  }
  .nav-logo img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
  }
  .nav-logo-text {
    font-family: 'Unbounded', sans-serif;
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--white);
    letter-spacing: 0.1em;
    line-height: 1;
  }
  .nav-logo-text span { color: var(--ocean-light); }

  .nav-back {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
  }
  .nav-back:hover { color: var(--ocean-light); }

  /* ===== PASSWORD GATE ===== */
  .password-gate {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: linear-gradient(135deg, #0A2463 0%, #1E5FA8 60%, #3AAFDC 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }

  .password-gate.hidden { display: none; }

  .gate-step-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: rgba(255,255,255,0.85);
    margin-bottom: 0.45rem;
    letter-spacing: 0.04em;
  }
  .gate-google-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.65rem 1.2rem;
    background: #fff;
    color: #444;
    border: none;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    font-family: 'Noto Sans JP', sans-serif;
    transition: box-shadow 0.15s, transform 0.15s, background 0.15s;
    line-height: 1;
  }
  .gate-google-btn:hover:not(:disabled) {
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    transform: translateY(-1px);
  }
  .gate-google-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: rgba(255,255,255,0.55);
  }
  .google-signin-wrap {
    display: none;
    justify-content: center;
    min-height: 44px;
  }
  .google-signin-wrap.visible {
    display: flex;
  }

  .gate-box {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 28px;
    padding: 3rem;
    text-align: center;
    backdrop-filter: blur(20px);
    max-width: 440px;
    width: 90%;
  }

  .gate-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
  }

  .gate-box h2 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
  }

  .gate-box p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 2rem;
    line-height: 1.7;
  }

  .gate-input-wrap {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
    margin-bottom: 1rem;
  }

  .gate-input-wrap input {
    width: 100%;
    padding: 0.85rem 1.2rem;
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 14px;
    background: rgba(255,255,255,0.07);
    color: var(--white);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
    font-family: 'Noto Sans JP', sans-serif;
    box-sizing: border-box;
  }

  .gate-input-wrap .gate-btn {
    width: 100%;
    align-self: stretch;
  }

  .gate-input-wrap input:focus {
    border-color: var(--ocean-light);
  }

  .gate-input-wrap input::placeholder {
    color: rgba(255,255,255,0.35);
  }

  .gate-btn {
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: var(--ocean-deep);
    border: none;
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .gate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(6,214,160,0.4);
  }

  .gate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
  }

  .gate-front-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 1.1rem;
    color: rgba(255,255,255,0.78);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 700;
    transition: color 0.2s;
  }

  .gate-front-link:hover { color: var(--mint); }

  .gate-error {
    color: var(--coral);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    min-height: 1.2em;
  }

  .gate-state-card {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 18px;
    padding: 1rem 1.1rem;
  }

  .gate-state-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.45rem;
  }

  .gate-state-meta {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.72);
    margin-bottom: 0.7rem;
    line-height: 1.6;
  }

  .gate-state-text {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.76);
    line-height: 1.8;
  }

  .gate-state-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1rem;
  }

  .gate-sub-btn {
    padding: 0.78rem 1.3rem;
    background: rgba(255,255,255,0.12);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.24);
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
  }

  /* ===== MAIN CONTENT ===== */
  .main-content {
    display: none;
    padding-top: 70px;
  }

  .main-content.visible { display: block; }

  /* ===== HERO MINI ===== */
  .hero-mini {
    background: linear-gradient(135deg, #0A2463 0%, #1E5FA8 100%);
    padding: 4rem 2rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .hero-mini::before {
    content: 'COLLABORATOR';
    position: absolute;
    font-family: 'Unbounded', sans-serif;
    font-weight: 900;
    font-size: 12vw;
    color: rgba(255,255,255,0.03);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap;
    pointer-events: none;
  }

  .hero-mini .section-tag {
    display: inline-block;
    font-family: 'Unbounded', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--ocean-foam);
    background: rgba(255,255,255,0.1);
    padding: 0.3rem 1rem;
    border-radius: 100px;
    margin-bottom: 1rem;
  }

  .hero-mini h1 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 900;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--white);
    margin-bottom: 0.8rem;
  }

  .hero-mini p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
  }

  /* ===== TABS ===== */
  .tab-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem 0;
    flex-wrap: wrap;
    background: var(--white);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    position: sticky;
    top: 56px;
    z-index: 100;
  }

  .tab-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-bottom: none;
    border-radius: 14px 14px 0 0;
    background: transparent;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    color: #888;
    transition: all 0.2s;
    position: relative;
  }

  .tab-btn:hover { color: var(--ocean-mid); }

  a.tab-btn.tab-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    background: rgba(58,175,220,0.1);
    color: var(--ocean-mid);
  }
  a.tab-btn.tab-link::after {
    content: '\2197';
    margin-left: 0.3rem;
    font-size: 0.85em;
    opacity: 0.7;
  }
  a.tab-btn.tab-link:hover {
    background: rgba(58,175,220,0.18);
    color: var(--ocean-deep);
  }

  .tab-btn.active {
    color: var(--ocean-deep);
    background: var(--sand);
    border-color: rgba(0,0,0,0.08);
  }

  .tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0; right: 0;
    height: 3px;
    background: var(--ocean-light);
    border-radius: 3px 3px 0 0;
  }

  .tab-panel { display: none; padding: 2rem; }
  .tab-panel.active { display: block; }

  /* ===== NAV right group + dev login widget ===== */
  .nav-right-group {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
  }
  /* すべてのナビ要素を共通レール (高さ・行間) に揃える */
  .nav-right-group > * {
    height: 36px;
    display: inline-flex;
    align-items: center;
    line-height: 1;
    box-sizing: border-box;
  }
  .nav-right-group .nav-back { padding: 0 0.6rem; }
  .nav-right-group .dev-login-widget { padding: 0 0.7rem; }
  .nav-right-group .nav-session-chip { padding: 0 0.8rem; }
  /* SVG アイコン: 完全にテキストとセンター揃え（絵文字のような offset がない） */
  .nav-right-group .nav-svg-icon {
    flex-shrink: 0;
    display: block;
  }
  .nav-bell svg { display: block; }

  .nav-chat-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0 0.95rem;
    height: 36px;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: #fff;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.18);
    box-shadow: 0 2px 8px rgba(58,175,220,0.3);
    transition: transform 0.15s, box-shadow 0.15s;
    line-height: 1;
    box-sizing: border-box;
    cursor: pointer;
  }
  .nav-chat-btn * { cursor: pointer; }
  .nav-chat-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(58,175,220,0.45);
    color: #fff;
  }
  .nav-bell {
    position: relative;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.22);
    color: #fff;
    border-radius: 100px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
  }
  .nav-bell:hover { background: rgba(255,255,255,0.2); }
  .nav-bell .bell-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--coral);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 100px;
    padding: 0.05rem 0.4rem;
    min-width: 1.2rem;
    line-height: 1.2;
    border: 2px solid var(--ocean-deep);
  }

  .notif-panel {
    position: fixed;
    top: 60px;
    right: 1rem;
    width: 360px;
    max-height: 70vh;
    overflow-y: auto;
    background: var(--white);
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(10,36,99,0.2);
    z-index: 6500;
    display: none;
  }
  .notif-panel.open { display: block; }
  .notif-header {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    font-weight: 700;
    color: var(--ocean-deep);
    font-size: 0.92rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .notif-mark-all {
    font-size: 0.72rem;
    color: var(--ocean-mid);
    background: none;
    border: none;
    cursor: pointer;
  }
  .notif-mark-all:hover { color: var(--ocean-deep); }
  .notif-item {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    cursor: pointer;
    font-size: 0.82rem;
    line-height: 1.55;
    transition: background 0.12s;
  }
  .notif-item:hover { background: rgba(58,175,220,0.06); }
  .notif-item.is-unread {
    background: rgba(255,209,102,0.1);
    border-left: 3px solid var(--amber);
    padding-left: 0.8rem;
  }
  .notif-item .notif-meta {
    font-size: 0.7rem;
    color: #888;
    margin-bottom: 0.2rem;
  }
  .notif-empty {
    padding: 1.5rem;
    text-align: center;
    color: #999;
    font-size: 0.85rem;
  }

  .nav-chat-btn .icon,
  .nav-pill .icon {
    font-size: 0.92em;
    line-height: 1;
    display: inline-flex;
    align-items: center;
  }

  .nav-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0 0.85rem;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 100px;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.78rem;
    line-height: 1;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    box-sizing: border-box;
    cursor: pointer;
  }
  .nav-pill:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.4);
    color: #fff;
  }

  .dev-login-widget {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 100px;
    padding: 0 0.7rem;
    height: 36px;
  }

  .dev-login-label {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.75);
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    line-height: 1;
  }

  .dev-login-select {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 100px;
    padding: 0.3rem 0.6rem;
    font-size: 0.78rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    cursor: pointer;
    max-width: 180px;
  }

  .dev-login-select option { color: #000; background: #fff; }

  .nav-session-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 100px;
    padding: 0 0.8rem;
    height: 36px;
    min-width: 0;
    max-width: 280px;
  }
  .nav-session-chip.is-active {
    background: rgba(255,255,255,0.16);
    border-color: rgba(255,255,255,0.32);
  }
  .nav-session-mode {
    font-size: 0.68rem;
    font-weight: 700;
    color: rgba(255,255,255,0.72);
    letter-spacing: 0.08em;
    flex-shrink: 0;
  }
  .nav-session-value {
    font-size: 0.78rem;
    color: #fff;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  /* ===== MEMBERS tab ===== */
  .members-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1100px;
    margin: 0 auto 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
  }

  .members-header h2 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--ocean-deep);
  }

  .members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.2rem;
    max-width: 1100px;
    margin: 0 auto;
  }

  .member-profile-card {
    background: var(--white);
    border-radius: 18px;
    padding: 1.4rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.15s, box-shadow 0.15s;
  }

  .member-profile-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.09);
  }

  .member-profile-card.is-self {
    border-color: var(--ocean-light);
    box-shadow: 0 0 0 2px rgba(58,175,220,0.2);
  }

  .member-name-ja {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--ocean-deep);
  }

  .member-name-en {
    font-family: 'Unbounded', sans-serif;
    font-weight: 400;
    font-size: 0.8rem;
    color: #666;
    letter-spacing: 0.02em;
  }

  .member-meta {
    font-size: 0.8rem;
    color: #555;
    line-height: 1.6;
    margin-top: 0.3rem;
  }

  .member-meta .label {
    display: inline-block;
    color: #999;
    min-width: 4em;
  }

  .member-roles {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
  }

  .member-role-badge {
    display: inline-block;
    border-radius: 100px;
    padding: 0.18rem 0.7rem;
    font-size: 0.7rem;
    font-weight: 600;
  }

  .role-user { background: rgba(58,175,220,0.15); color: var(--ocean-mid); }
  .role-scientist { background: rgba(6,214,160,0.18); color: #059669; }

  .self-badge {
    display: inline-block;
    background: var(--amber);
    color: #6a4a00;
    border-radius: 100px;
    padding: 0.15rem 0.6rem;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-left: 0.4rem;
    vertical-align: middle;
  }

  .members-search {
    max-width: 1100px;
    margin: 0 auto 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-wrap: wrap;
  }

  .members-search input[type="text"] {
    flex: 1 1 240px;
    padding: 0.7rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    background: var(--white);
    font-size: 0.9rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    transition: border-color 0.2s;
  }

  .members-search input[type="text"]:focus,
  .members-search select:focus { border-color: var(--ocean-light); }

  .members-search select {
    padding: 0.7rem 0.8rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    background: var(--white);
    font-size: 0.85rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    transition: border-color 0.2s;
    cursor: pointer;
    max-width: 260px;
  }

  .members-check {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    padding: 0.3rem 0.8rem;
    border: 1px solid transparent;
    border-radius: 100px;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
  }
  .members-check input { accent-color: currentColor; }

  .members-check.is-user {
    background: rgba(58,175,220,0.15);
    color: var(--ocean-mid);
  }
  .members-check.is-user:hover { border-color: var(--ocean-light); }
  .members-check.is-user:has(input:checked) {
    background: var(--ocean-mid);
    color: #fff;
  }

  .members-check.is-scientist {
    background: rgba(6,214,160,0.18);
    color: #059669;
  }
  .members-check.is-scientist:hover { border-color: #06D6A0; }
  .members-check.is-scientist:has(input:checked) {
    background: #059669;
    color: #fff;
  }

  .members-count-row {
    max-width: 1100px;
    margin: 0 auto 0.8rem;
    padding: 0 0.2rem;
  }

  .members-count {
    font-size: 0.82rem;
    color: #666;
    white-space: nowrap;
    font-weight: 500;
  }

  .member-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: 0.6rem;
    padding-top: 0.6rem;
    border-top: 1px dashed rgba(0,0,0,0.08);
  }

  .member-tag-badge {
    display: inline-block;
    background: rgba(10,36,99,0.07);
    color: var(--ocean-mid);
    border-radius: 6px;
    padding: 0.18rem 0.55rem;
    font-size: 0.72rem;
    font-weight: 600;
  }

  .members-tag-filter {
    max-width: 1100px;
    margin: 0 auto 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    flex-wrap: wrap;
  }

  .tag-filter-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 100px;
    padding: 0.4rem 0.95rem;
    font-size: 0.8rem;
    font-family: 'Noto Sans JP', sans-serif;
    color: #444;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    flex-shrink: 0;
  }
  .tag-filter-toggle:hover { border-color: var(--ocean-light); background: rgba(58,175,220,0.05); }

  .tag-filter-toggle .chevron {
    font-size: 0.65rem;
    color: var(--ocean-mid);
  }

  .tag-filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    flex: 1;
    min-height: 2rem;
    align-items: center;
  }

  .tag-filter-chip {
    display: inline-block;
    background: rgba(10,36,99,0.07);
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.25rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ocean-mid);
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
  }
  .tag-filter-chip:hover { border-color: var(--ocean-light); }

  .tag-filter-chip.is-active {
    background: var(--ocean-mid);
    border-color: var(--ocean-mid);
    color: #fff;
  }

  .tag-filter-empty {
    font-size: 0.75rem;
    color: #aaa;
  }

  /* ===== Admin users list ===== */
  .admin-users-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .admin-user-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    flex-wrap: wrap;
  }

  .admin-user-row .name {
    font-weight: 700;
    color: var(--ocean-deep);
  }
  .admin-user-row .gmail {
    font-size: 0.78rem;
    color: #888;
  }

  .admin-role-select {
    padding: 0.35rem 0.6rem;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 8px;
    font-size: 0.82rem;
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--white);
    cursor: pointer;
  }
  .admin-delete-user-btn {
    border: 1px solid rgba(179,27,27,0.22);
    background: rgba(179,27,27,0.06);
    color: #b31b1b;
    border-radius: 8px;
    padding: 0.38rem 0.72rem;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: 'Noto Sans JP', sans-serif;
    cursor: pointer;
  }
  .admin-delete-user-btn:hover {
    background: rgba(179,27,27,0.12);
    border-color: rgba(179,27,27,0.35);
  }

  .role-pill {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.15rem 0.6rem;
    border-radius: 100px;
  }
  .role-pill.role-admin { background: rgba(179,27,27,0.12); color: #b31b1b; }
  .role-pill.role-moderator { background: rgba(124,58,237,0.13); color: #7c3aed; }
  .role-pill.role-member { background: rgba(6,214,160,0.15); color: #059669; }
  .role-pill.role-pending { background: rgba(255,209,102,0.2); color: #9a6d00; }
  .preapproval-panel {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
  }
  .preapproval-form {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "value  value"
      "note   submit";
    gap: 0.7rem 0.75rem;
    align-items: end;
  }
  .preapproval-form .pf-value { grid-area: value; }
  .preapproval-form .pf-note  { grid-area: note; }
  .preapproval-form .pf-submit { grid-area: submit; align-self: end; }
  .preapproval-form label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.74rem;
    color: #555;
    font-weight: 700;
  }
  .preapproval-form select,
  .preapproval-form input,
  .preapproval-form textarea {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.86rem;
    line-height: 1.55;
    color: #1a1a2e;
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
  }
  .preapproval-form select:focus,
  .preapproval-form input:focus,
  .preapproval-form textarea:focus {
    outline: none;
    border-color: var(--ocean-light);
    box-shadow: 0 0 0 3px rgba(58,175,220,0.15);
  }
  .preapproval-form textarea {
    min-height: 78px;
    resize: vertical;
  }
  .preapproval-form .pf-hint {
    display: block;
    font-size: 0.7rem;
    color: #888;
    font-weight: 400;
    line-height: 1.55;
    margin-top: 0.1rem;
  }
  .preapproval-form .pf-submit { padding: 0.6rem 1.4rem; min-width: 96px; }
  .preapproval-list {
    margin-top: 0.8rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }
  .preapproval-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 10px;
    background: rgba(10,36,99,0.025);
    flex-wrap: wrap;
  }
  .preapproval-row .value {
    font-weight: 700;
    color: var(--ocean-deep);
    word-break: break-all;
  }
  .preapproval-row .note {
    font-size: 0.76rem;
    color: #777;
    margin-top: 0.12rem;
  }
  .preapproval-delete {
    margin-left: auto;
    border: none;
    background: rgba(179,27,27,0.08);
    color: #b31b1b;
    border-radius: 999px;
    padding: 0.35rem 0.7rem;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.76rem;
    cursor: pointer;
  }
  .preapproval-delete:hover { background: rgba(179,27,27,0.14); }
  @media (max-width: 760px) {
    .preapproval-form {
      grid-template-columns: 1fr;
      grid-template-areas:
        "value"
        "note"
        "submit";
    }
    .preapproval-form .pf-submit { width: 100%; }
    .preapproval-delete { margin-left: 0; }
  }

  /* ===== Board search & tag filter ===== */
  .board-tag-filter {
    max-width: 900px;
    margin: 0 auto 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    flex-wrap: wrap;
  }
  .board-search {
    max-width: 900px;
    margin: 0 auto 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-wrap: wrap;
  }
  .board-search input[type="text"] {
    flex: 1 1 240px;
    padding: 0.7rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    background: var(--white);
    font-size: 0.9rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    transition: border-color 0.2s;
  }
  .board-search input[type="text"]:focus,
  .board-search select:focus { border-color: var(--ocean-light); }
  .board-search select {
    padding: 0.7rem 0.8rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    background: var(--white);
    font-size: 0.85rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    cursor: pointer;
  }
  .board-count-row {
    max-width: 900px;
    margin: 0 auto 0.8rem;
    padding: 0 0.2rem;
  }

  .board-post-card .member-tag-badge {
    font-size: 0.72rem;
  }

  /* ===== Mentions ===== */
  .mention-link {
    display: inline-block;
    background: rgba(58,175,220,0.15);
    color: var(--ocean-mid);
    border-radius: 6px;
    padding: 0 0.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s;
  }
  .mention-link:hover { background: rgba(58,175,220,0.3); color: var(--ocean-deep); }
  .mention-link.mention-unresolved {
    background: rgba(0,0,0,0.06);
    color: #888;
    cursor: default;
  }
  .channel-link {
    display: inline-block;
    background: rgba(82, 198, 138, 0.18);
    color: #1f7a4a;
    border-radius: 6px;
    padding: 0 0.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s;
  }
  .channel-link:hover { background: rgba(82, 198, 138, 0.34); color: #14563b; }
  /* グループメンション（@全メンバー / @プロジェクト参加者）: 押下不可の強調バッジ */
  .mention-group {
    display: inline-block;
    background: rgba(212, 130, 20, 0.16);
    color: #a35a00;
    border-radius: 6px;
    padding: 0 0.3rem;
    font-weight: 700;
    cursor: default;
  }

  /* ===== Chat modal ===== */
  #chatModal { padding: 0; align-items: stretch; justify-content: stretch; }
  .chat-modal-box {
    max-width: none;
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    background: var(--white);
    overflow: hidden;
  }
  .chat-modal-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.7rem 1.5rem;
    background: rgba(10, 36, 99, 0.95);
    backdrop-filter: blur(12px);
    color: #fff;
    border-bottom: 2px solid rgba(58, 175, 220, 0.4);
    flex-shrink: 0;
  }
  .chat-modal-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    flex-shrink: 0;
  }
  .chat-modal-logo img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
  }
  .chat-modal-logo-text {
    font-family: 'Unbounded', sans-serif;
    font-weight: 900;
    font-size: 1.15rem;
    color: #fff;
    letter-spacing: 0.1em;
    line-height: 1;
  }
  .chat-modal-logo-text span { color: var(--ocean-light); }
  .chat-modal-page-label {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.92);
    letter-spacing: 0.04em;
    padding-left: 1rem;
    border-left: 1px solid rgba(255,255,255,0.18);
    flex-shrink: 0;
  }
  .chat-modal-spacer { flex: 1; }
  .chat-modal-back {
    background: transparent;
    color: rgba(255,255,255,0.85);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 0.4rem 0.95rem;
    border-radius: 999px;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    flex-shrink: 0;
  }
  .chat-modal-back:hover {
    background: rgba(255,255,255,0.12);
    border-color: var(--ocean-light);
    color: #fff;
  }
  @media (max-width: 720px) {
    .chat-modal-page-label { display: none; }
    .chat-modal-header { gap: 0.6rem; padding: 0.6rem 1rem; }
  }
  #closeChatModal {
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.24);
    color: #fff;
    border-radius: 100px;
  }
  .chat-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr) 320px;
    gap: 0;
    flex: 1 1 auto;
    min-height: 0;
    overflow: hidden;
    background: var(--white);
  }
  @media (max-width: 820px) {
    .chat-layout { grid-template-columns: 1fr; }
  }
  .chat-room-nav {
    overflow-y: auto;
    padding: 1rem 0.8rem;
    border-right: 1px solid rgba(0,0,0,0.08);
    background: #f7fbfd;
    height: 100%;
    order: 1;
  }
  .chat-room-nav-title {
    font-weight: 800;
    color: var(--ocean-deep);
    font-size: 0.82rem;
    margin: 0 0.2rem 0.7rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
  }
  .chat-room-count {
    color: #777;
    font-weight: 500;
    font-size: 0.74rem;
  }
  .chat-room-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }
  .chat-room-item {
    width: 100%;
    text-align: left;
    border: 1px solid transparent;
    background: transparent;
    border-radius: 8px;
    padding: 0.65rem 0.7rem;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    color: #243447;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  }
  .chat-room-item * { cursor: pointer; }
  .chat-room-item:hover {
    background: rgba(58,175,220,0.08);
    border-color: rgba(58,175,220,0.18);
  }
  .chat-room-item.active {
    background: #fff;
    border-color: rgba(58,175,220,0.38);
    box-shadow: 0 4px 14px rgba(10,36,99,0.08);
  }
  .chat-room-item-title {
    font-weight: 700;
    font-size: 0.86rem;
    line-height: 1.45;
    color: var(--ocean-deep);
  }
  .chat-room-item-meta {
    margin-top: 0.28rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
    font-size: 0.72rem;
    color: #777;
  }
  .chat-room-badge {
    border-radius: 999px;
    padding: 0.08rem 0.42rem;
    background: rgba(6,214,160,0.12);
    color: #047857;
    font-weight: 700;
  }
  .chat-room-badge.manage {
    background: rgba(255,209,102,0.22);
    color: #8a5a00;
  }
  .chat-room-badge.pending {
    background: rgba(58,175,220,0.12);
    color: var(--ocean-deep);
  }
  .chat-room-empty {
    padding: 0.8rem 0.5rem;
    color: #777;
    font-size: 0.82rem;
    line-height: 1.7;
  }
  .chat-sidebar {
    overflow-y: auto;
    padding: 1rem 1.1rem;
    border-left: 1px solid rgba(0,0,0,0.08);
    background: #fff;
    height: 100%;
    order: 3;
  }
  .chat-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed rgba(0,0,0,0.08);
  }
  .chat-section:last-child { border-bottom: none; }
  .chat-section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--ocean-deep);
    margin-bottom: 0.5rem;
  }
  .chat-mini-btn {
    padding: 0.22rem 0.65rem;
    font-size: 0.72rem;
    border: 1px solid rgba(0,0,0,0.12);
    background: var(--white);
    border-radius: 100px;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    color: #444;
    transition: background 0.15s, border-color 0.15s;
  }
  .chat-mini-btn:hover { border-color: var(--ocean-light); }
  .chat-mini-btn-primary {
    background: var(--ocean-mid);
    border-color: var(--ocean-mid);
    color: #fff;
  }
  .chat-mini-btn-primary:hover { background: var(--ocean-deep); border-color: var(--ocean-deep); }

  .chat-participant-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  .chat-participant-row:last-child { border-bottom: none; }
  .chat-participant-row .remove-btn {
    background: none;
    border: none;
    color: #c00;
    cursor: pointer;
    font-size: 0.7rem;
    padding: 0.15rem 0.3rem;
    display: none;
  }
  .chat-participant-row.can-manage .remove-btn { display: inline; }

  .chat-role-select {
    padding: 0.18rem 0.4rem;
    font-size: 0.72rem;
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 6px;
    background: var(--white);
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    display: none;
  }
  .chat-participant-row.can-manage .chat-role-select { display: inline-block; }

  .chat-join-request-row {
    padding: 0.5rem;
    background: rgba(58,175,220,0.07);
    border-radius: 8px;
    margin-bottom: 0.4rem;
    font-size: 0.8rem;
  }
  .chat-join-request-row .actions {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.3rem;
    justify-content: flex-end;
  }

  .chat-main {
    display: flex;
    flex-direction: column;
    min-height: 0;
    order: 2;
    background: var(--white);
  }
  .chat-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 1.1rem 1.2rem;
    background:
      linear-gradient(180deg, rgba(58,175,220,0.04), transparent 220px),
      var(--white);
    border-radius: 0;
    min-height: 0;
  }
  .chat-message {
    position: relative;
    display: flex;
    gap: 0.8rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0.7rem;
    border-radius: 10px;
    transition: background 0.15s;
  }
  .chat-message:hover { background: rgba(58,175,220,0.04); }
  .chat-message .avatar {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    font-size: 1rem;
    box-shadow: 0 2px 6px rgba(58,175,220,0.25);
  }
  .chat-message .body { flex: 1; min-width: 0; }
  .chat-message .meta-line {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.15rem;
  }
  .chat-message .author {
    font-weight: 700;
    color: var(--ocean-deep);
    cursor: pointer;
    font-size: 0.92rem;
  }
  .chat-message .author:hover { text-decoration: underline; }
  .chat-message .timestamp {
    font-size: 0.7rem;
    color: #aaa;
  }
  .chat-message .content {
    font-size: 0.92rem;
    line-height: 1.75;
    white-space: pre-wrap;
    color: #1a1a2e;
    word-wrap: break-word;
  }
  .chat-empty {
    padding: 3rem 1rem;
    color: #888;
    text-align: center;
    font-size: 0.88rem;
    line-height: 1.7;
  }
  .chat-input-row {
    display: block;
    padding: 0.75rem 1.2rem 1rem;
    border-top: 1px solid rgba(0,0,0,0.06);
    background: var(--white);
    flex-shrink: 0;
    width: 100%;
  }
  .chat-composer {
    border: 1.5px solid rgba(0,0,0,0.12);
    border-radius: 12px;
    padding: 0.4rem 0.5rem 0.4rem 0.7rem;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
    width: 100%;
  }
  .chat-composer:focus-within {
    border-color: var(--ocean-light);
    box-shadow: 0 0 0 3px rgba(58,175,220,0.15);
  }
  .chat-input-row textarea {
    flex: 1;
    width: 100%;
    min-width: 0;
    padding: 0.55rem 0.4rem;
    border: none;
    outline: none;
    resize: none;
    min-height: 44px;
    max-height: 220px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.93rem;
    line-height: 1.55;
    background: transparent;
  }
  .chat-input-row .btn-submit {
    align-self: stretch;
    padding: 0.55rem 1.2rem;
    border-radius: 10px;
  }
  .chat-send-stack {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    align-items: stretch;
    flex-shrink: 0;
  }
  .wizard-inline-btn {
    background: rgba(255,209,102,0.18);
    color: #8a5d00;
    border: 1px solid rgba(255,209,102,0.55);
    border-radius: 8px;
    padding: 0.35rem 0.6rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 0.75rem;
    line-height: 1.2;
    white-space: nowrap;
    transition: background 0.15s, border-color 0.15s;
  }
  .wizard-inline-btn:hover {
    background: rgba(255,209,102,0.32);
    border-color: rgba(255,180,40,0.7);
  }
  .chat-input-hint {
    margin-top: 0.45rem;
    font-size: 0.7rem;
    color: #888;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
  }
  .chat-input-hint kbd {
    background: rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.12);
    border-bottom-width: 2px;
    border-radius: 5px;
    padding: 0.05rem 0.4rem;
    font-size: 0.7rem;
    font-family: 'Noto Sans JP', sans-serif;
    color: #555;
  }
  .chat-main { gap: 0.5rem; height: 100%; }
  .chat-search-wrapper {
    flex-shrink: 0;
    padding: 0.6rem 1.2rem 0.4rem;
    background: var(--white);
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  .chat-search-bar {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.6rem;
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 999px;
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
  }
  .chat-search-bar:focus-within {
    border-color: var(--ocean-light);
    box-shadow: 0 0 0 3px rgba(58,175,220,0.15);
  }
  .chat-search-bar input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.3rem 0.2rem;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.88rem;
    color: var(--text);
    background: transparent;
  }
  .chat-search-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    background: rgba(82,198,138,0.18);
    color: #1f7a4a;
    font-size: 0.78rem;
    font-weight: 700;
    flex-shrink: 0;
  }
  .chat-search-chip-author {
    background: rgba(58,175,220,0.18);
    color: var(--ocean-mid);
  }
  .chat-search-chip .chip-remove {
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    padding: 0 0.1rem;
    font-size: 0.85rem;
    opacity: 0.7;
  }
  .chat-search-chip .chip-remove:hover { opacity: 1; }
  /* Search predictive-suggest dropdown */
  .search-suggest-dropdown {
    position: fixed;
    z-index: 11000;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 10px;
    box-shadow: 0 12px 36px rgba(10,36,99,0.18);
    max-height: 300px;
    overflow-y: auto;
    display: none;
  }
  .search-suggest-dropdown.open { display: block; }
  .search-suggest-header {
    padding: 0.4rem 0.7rem;
    font-size: 0.72rem;
    color: #888;
    font-weight: 700;
    background: rgba(0,0,0,0.03);
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  .search-suggest-empty { padding: 0.6rem 0.7rem; color: #aaa; font-size: 0.78rem; }
  .search-suggest-item {
    display: flex;
    align-items: baseline;
    gap: 0.45rem;
    padding: 0.4rem 0.7rem;
    cursor: pointer;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-size: 0.83rem;
  }
  .search-suggest-item:hover, .search-suggest-item.is-active {
    background: rgba(58,175,220,0.08);
  }
  .search-suggest-item .ico { color: #888; font-weight: 700; flex-shrink: 0; }
  .search-suggest-item .ttl { font-weight: 700; color: var(--ocean-deep); }
  .search-suggest-item .sub { color: #888; font-size: 0.75rem; margin-left: auto; flex-shrink: 0; }
  .chat-search-count { color: #888; font-size: 0.75rem; flex-shrink: 0; }
  .chat-search-shortcut {
    color: #aaa;
    font-size: 0.7rem;
    display: flex;
    gap: 0.1rem;
    flex-shrink: 0;
  }
  .chat-search-shortcut kbd {
    background: rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.12);
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: 0 0.3rem;
    font-size: 0.68rem;
    color: #555;
  }
  .chat-search-close {
    border: none;
    background: rgba(0,0,0,0.05);
    border-radius: 50%;
    width: 22px;
    height: 22px;
    cursor: pointer;
    color: #555;
    font-size: 0.75rem;
    flex-shrink: 0;
  }
  .chat-search-close:hover { background: rgba(0,0,0,0.1); }
  /* Highlighting matches inside chat messages */
  .chat-message mark {
    background: rgba(255,209,102,0.55);
    color: inherit;
    padding: 0 1px;
    border-radius: 3px;
  }
  /* Global cross-channel search results */
  .chat-global-results {
    flex: 1;
    overflow-y: auto;
    padding: 0.4rem 1rem 1rem;
    background: var(--surface, #f5f7fb);
  }
  .chat-global-results .global-result-empty {
    text-align: center;
    color: #888;
    font-size: 0.85rem;
    padding: 2rem 1rem;
    line-height: 1.7;
  }
  .global-result-group {
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 10px;
    margin-bottom: 0.6rem;
    overflow: hidden;
  }
  .global-result-group .group-header {
    padding: 0.45rem 0.7rem;
    font-weight: 700;
    color: var(--ocean-deep);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(58,175,220,0.08);
  }
  .global-result-group .group-header:hover { background: rgba(58,175,220,0.16); }
  .global-result-group .group-header .count {
    background: rgba(58,175,220,0.2);
    color: var(--ocean-deep);
    border-radius: 999px;
    padding: 0.05rem 0.5rem;
    font-size: 0.72rem;
  }
  .global-result-item {
    padding: 0.45rem 0.7rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    font-size: 0.83rem;
    line-height: 1.55;
    cursor: pointer;
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: baseline;
  }
  .global-result-item:hover { background: rgba(58,175,220,0.05); }
  .global-result-item .who { font-weight: 700; color: var(--ocean-mid); flex-shrink: 0; }
  .global-result-item .when { color: #aaa; font-size: 0.72rem; margin-left: auto; flex-shrink: 0; }
  .global-result-item mark { background: rgba(255,209,102,0.55); padding: 0 1px; border-radius: 3px; }
  /* Bookmarks */
  .chat-bookmarks-list { list-style: none; padding: 0; margin: 0; max-height: 220px; overflow-y: auto; }
  .chat-bookmark-item {
    position: relative;
    display: block;
    padding: 0.4rem 1.6rem 0.4rem 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.78rem;
    line-height: 1.4;
    margin-bottom: 0.3rem;
    background: rgba(58,175,220,0.05);
    border: 1px solid rgba(58,175,220,0.12);
  }
  .chat-bookmark-item:hover { background: rgba(58,175,220,0.12); }
  .chat-bookmark-item .bm-channel { display: block; font-weight: 700; color: var(--ocean-deep); font-size: 0.72rem; margin-bottom: 0.15rem; }
  .chat-bookmark-item .bm-snippet { display: block; color: #444; font-size: 0.78rem; }
  .chat-bookmark-item .bm-remove {
    position: absolute;
    top: 0.3rem;
    right: 0.35rem;
    border: none;
    background: transparent;
    color: #aaa;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
  }
  .chat-bookmark-item:hover .bm-remove { opacity: 1; }
  .chat-bookmark-item .bm-remove:hover { color: #c00; }
  .chat-bookmarks-empty {
    list-style: none;
    color: #aaa;
    font-size: 0.75rem;
    padding: 0.6rem 0.4rem;
    line-height: 1.5;
  }
  .chat-message {
    position: relative;
  }
  .chat-message .bookmark-btn {
    position: absolute;
    top: 0.3rem;
    right: 0.3rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.15rem 0.35rem;
    color: #ccc;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
  }
  .chat-message:hover .bookmark-btn { opacity: 1; }
  .chat-message .bookmark-btn:hover { color: var(--amber, #FFB400); background: rgba(255,209,102,0.15); }
  .chat-message .bookmark-btn.is-bookmarked {
    opacity: 1;
    color: #d97706;
    border-color: rgba(255,209,102,0.6);
    background: rgba(255,209,102,0.18);
  }
  /* Unread dot on chat-room-item */
  .chat-room-item .unread-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
    margin-left: 0.35rem;
    vertical-align: middle;
    box-shadow: 0 0 0 2px rgba(239,68,68,0.2);
  }
  /* Divider for the first new-since-last-seen message */
  .chat-message.first-unread {
    position: relative;
  }
  .chat-message.first-unread::before {
    content: 'ここから新着';
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 0.7rem;
    color: #ef4444;
    background: linear-gradient(to right, transparent, rgba(239,68,68,0.5) 20%, rgba(239,68,68,0.5) 80%, transparent);
    color: #fff;
    padding: 0;
    pointer-events: none;
  }
  .chat-message.first-unread::after {
    content: '';
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(239,68,68,0.6);
  }
  /* Ledger button on chat messages (next to bookmark) */
  .chat-message .ledger-btn {
    position: absolute;
    top: 0.3rem;
    right: 2.1rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.15rem 0.35rem;
    color: #7a8794;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0.68;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
  }
  .chat-message:hover .ledger-btn { opacity: 1; }
  .chat-message .ledger-btn:hover { color: var(--ocean-mid); background: rgba(58,175,220,0.1); }
  /* Edit / Delete (own message) buttons */
  .chat-message .msg-edit-btn,
  .chat-message .msg-delete-btn {
    position: absolute;
    top: 0.3rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.15rem 0.35rem;
    color: #7a8794;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
  }
  .chat-message .msg-edit-btn { right: 5.7rem; }
  .chat-message .msg-delete-btn { right: 7.5rem; }
  .chat-message:hover .msg-edit-btn,
  .chat-message:hover .msg-delete-btn { opacity: 1; }
  .chat-message .msg-edit-btn:hover { color: var(--ocean-mid); background: rgba(58,175,220,0.1); }
  .chat-message .msg-quote-btn {
    position: absolute;
    top: 0.3rem;
    right: 3.9rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.15rem 0.35rem;
    color: #7a8794;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
  }
  .chat-message:hover .msg-quote-btn { opacity: 1; }
  .chat-message .msg-quote-btn:hover { color: var(--ocean-mid); background: rgba(58,175,220,0.1); }
  /* 引用ブロック（コメント・チャット・投稿本文） */
  .quote-block {
    border-left: 3px solid rgba(58,175,220,0.5);
    margin: 0.35rem 0;
    padding: 0.3rem 0.7rem;
    background: rgba(58,175,220,0.06);
    color: #555;
    font-size: 0.92em;
    white-space: pre-wrap;
    border-radius: 0 6px 6px 0;
  }
  .quote-block:first-child { margin-top: 0; }
  .quote-block:last-child { margin-bottom: 0; }
  .chat-message .msg-delete-btn:hover { color: #c00; background: rgba(255,0,0,0.06); }
  /* Popup for choosing ledger kind */
  .ledger-popup {
    position: fixed;
    z-index: 11060;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 10px;
    box-shadow: 0 12px 36px rgba(10,36,99,0.18);
    padding: 0.4rem;
    min-width: 200px;
    display: none;
  }
  .ledger-popup.open { display: block; }
  .ledger-popup button {
    display: block;
    width: 100%;
    text-align: left;
    border: none;
    background: transparent;
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
  }
  .ledger-popup button:hover { background: rgba(58,175,220,0.1); }
  /* Ledger items in sidebar */
  .chat-ledger-list { font-size: 0.78rem; line-height: 1.6; max-height: 240px; overflow-y: auto; }
  .ledger-item {
    position: relative;
    padding: 0.45rem 1.6rem 0.45rem 0.6rem;
    border-radius: 8px;
    margin-bottom: 0.3rem;
    cursor: default;
    border-left: 3px solid #ccc;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.06);
    border-left-width: 3px;
  }
  .ledger-item:hover { background: rgba(0,0,0,0.02); }
  .ledger-item.kind-decision { border-left-color: #059669; }
  .ledger-item.kind-action { border-left-color: var(--ocean-mid); }
  .ledger-item.kind-file { border-left-color: var(--amber, #FFB400); }
  .ledger-item.kind-risk { border-left-color: var(--coral, #ff6b6b); }
  .ledger-item .kind-pill {
    display: inline-block;
    padding: 0.05rem 0.45rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    background: rgba(0,0,0,0.05);
    margin-bottom: 0.2rem;
  }
  .ledger-item.kind-decision .kind-pill { background: rgba(6,214,160,0.18); color: #059669; }
  .ledger-item.kind-action .kind-pill { background: rgba(58,175,220,0.18); color: var(--ocean-mid); }
  .ledger-item.kind-file .kind-pill { background: rgba(255,209,102,0.25); color: #815b00; }
  .ledger-item.kind-risk .kind-pill { background: rgba(255,107,107,0.18); color: #aa1a1a; }
  .ledger-item .ledger-remove {
    position: absolute;
    top: 0.3rem;
    right: 0.35rem;
    border: none;
    background: transparent;
    color: #aaa;
    cursor: pointer;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
  }
  .ledger-item:hover .ledger-remove { opacity: 1; }
  .ledger-item .ledger-remove:hover { color: #c00; }
  .chat-ledger-empty {
    color: #aaa;
    font-size: 0.75rem;
    padding: 0.5rem 0.4rem;
    line-height: 1.5;
  }
  @media (max-width: 820px) {
    .chat-room-nav {
      order: 1;
      border-right: none;
      border-bottom: 1px solid rgba(0,0,0,0.08);
      max-height: 30vh;
    }
    .chat-sidebar {
      order: 2;
      border-left: none;
      border-bottom: 1px solid rgba(0,0,0,0.08);
      max-height: 38vh;
    }
    .chat-main { order: 3; min-height: 0; }
  }

  .btn-chat-open {
    background: rgba(6,214,160,0.15);
    color: #059669;
    border: 1px solid rgba(6,214,160,0.4);
    border-radius: 100px;
    padding: 0.35rem 0.9rem;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.15s, border-color 0.15s;
  }
  .btn-chat-open:hover { background: rgba(6,214,160,0.3); border-color: #06d6a0; }

  /* Mention autocomplete dropdown */
  .mention-dropdown {
    position: fixed;
    z-index: 11050;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 10px;
    box-shadow: 0 12px 36px rgba(10,36,99,0.18);
    min-width: 240px;
    max-width: 360px;
    max-height: 280px;
    overflow-y: auto;
    display: none;
  }
  .mention-dropdown.open { display: block; }
  .mention-option {
    padding: 0.45rem 0.8rem;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    border-bottom: 1px solid rgba(0,0,0,0.04);
  }
  .mention-option:last-child { border-bottom: none; }
  .mention-option:hover,
  .mention-option.is-active {
    background: rgba(58,175,220,0.12);
  }
  .mention-option .mopt-name {
    font-weight: 700;
    color: var(--ocean-deep);
  }
  .mention-option .mopt-sub {
    font-size: 0.72rem;
    color: #888;
  }
  /* グループメンションの候補行: 通常ユーザーと視覚的に区別 */
  .mention-option.mention-option-group {
    background: rgba(212, 130, 20, 0.07);
    border-bottom: 1px solid rgba(212, 130, 20, 0.18);
  }
  .mention-option.mention-option-group .mopt-name { color: #a35a00; }
  .mention-option.mention-option-group:hover,
  .mention-option.mention-option-group.is-active {
    background: rgba(212, 130, 20, 0.16);
  }

  .member-link-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-top: 0.3rem;
  }

  .member-url-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ocean-mid);
    text-decoration: none;
    border-bottom: 1px solid rgba(30,95,168,0.25);
    transition: color 0.2s, border-color 0.2s;
  }
  .member-url-link:hover { color: var(--ocean-deep); border-color: var(--ocean-deep); }

  .member-bio-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(58,175,220,0.1);
    color: var(--ocean-mid);
    border: 1px solid rgba(58,175,220,0.25);
    border-radius: 100px;
    padding: 0.25rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.2s, border-color 0.2s;
  }
  .member-bio-btn:hover { background: rgba(58,175,220,0.18); border-color: var(--ocean-light); }

  /* ===== TAB 1: OPEN DATA ===== */
  .filter-bar {
    max-width: 1200px;
    margin: 0 auto 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
  }

  .filter-bar input, .filter-bar select {
    padding: 0.7rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    background: var(--white);
    font-size: 0.85rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    transition: border-color 0.2s;
  }

  .filter-bar input:focus, .filter-bar select:focus {
    border-color: var(--ocean-light);
  }

  .filter-bar input { flex: 1; min-width: 200px; }
  .filter-bar select { min-width: 160px; }

  .filter-count {
    font-size: 0.8rem;
    color: #888;
    margin-left: auto;
  }

  .data-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.2rem;
  }

  .data-card {
    background: var(--white);
    border-radius: 18px;
    padding: 1.5rem;
    border: 2px solid rgba(0,0,0,0.04);
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .data-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  }

  .data-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
  }

  .data-card h3 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--ocean-deep);
    line-height: 1.4;
  }

  .data-card h3 small {
    display: block;
    font-size: 0.75rem;
    color: #999;
    font-weight: 400;
    margin-top: 0.2rem;
  }

  .data-country-badge {
    display: inline-block;
    background: rgba(30,95,168,0.08);
    border-radius: 100px;
    padding: 0.15rem 0.6rem;
    font-size: 0.7rem;
    color: var(--ocean-mid);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .data-card .desc {
    font-size: 0.82rem;
    line-height: 1.7;
    color: #666;
    margin-bottom: 0.8rem;
  }

  .data-card .license {
    font-size: 0.75rem;
    line-height: 1.6;
    color: #999;
    padding: 0.6rem 0.8rem;
    background: rgba(0,0,0,0.02);
    border-radius: 10px;
    margin-bottom: 0.8rem;
  }

  .data-card .license::before {
    content: 'License: ';
    font-weight: 700;
    color: #777;
  }

  .data-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .data-field-tag {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
  }

  .field-medical { background: #ffe5e5; color: #cc3333; }
  .field-economics { background: #fff3d6; color: #b38600; }
  .field-social { background: #e5f0ff; color: #2266aa; }
  .field-environment { background: #e0f7e9; color: #1a8a4a; }
  .field-genomics { background: #f0e5ff; color: #7733bb; }
  .field-nlp { background: #fff0e5; color: #cc6600; }
  .field-government { background: #e5eeff; color: #3355aa; }
  .field-image { background: #ffe5f0; color: #cc3377; }
  .field-transport { background: #e5fff5; color: #228866; }
  .field-education { background: #f5f0e5; color: #8a7733; }

  .data-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.9rem;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: var(--ocean-deep);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: 'Zen Kaku Gothic New', sans-serif;
  }

  .data-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 12px rgba(6,214,160,0.3);
  }

  .no-results {
    text-align: center;
    padding: 3rem;
    color: #999;
    font-size: 0.95rem;
    grid-column: 1 / -1;
  }

  /* ===== TAB 2: SHARED DATA ===== */
  .shared-notice {
    max-width: 900px;
    margin: 0 auto 2rem;
    background: rgba(30,95,168,0.06);
    border: 2px solid rgba(30,95,168,0.12);
    border-radius: 18px;
    padding: 1.5rem 2rem;
  }

  .shared-notice h3 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--ocean-deep);
    margin-bottom: 0.6rem;
  }

  .shared-notice p, .shared-notice li {
    font-size: 0.85rem;
    color: #555;
    line-height: 1.8;
  }

  .shared-notice ul {
    margin-left: 1.2rem;
    margin-top: 0.5rem;
  }

  .shared-table-wrap {
    max-width: 1200px;
    margin: 0 auto;
    overflow-x: auto;
  }

  .shared-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--white);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  }

  .shared-table th {
    background: var(--ocean-deep);
    color: var(--white);
    padding: 1rem 1.2rem;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    text-align: left;
    white-space: nowrap;
  }

  .shared-table td {
    padding: 1rem 1.2rem;
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    vertical-align: top;
    line-height: 1.6;
  }

  .shared-table tr:last-child td { border-bottom: none; }

  .shared-table tr:hover td {
    background: rgba(58,175,220,0.04);
  }

  .status-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
  }

  .status-active { background: rgba(6,214,160,0.15); color: #059669; }
  .status-pending { background: rgba(255,209,102,0.25); color: #b38600; }
  .status-archived { background: rgba(0,0,0,0.06); color: #888; }

  .shared-btn-area {
    max-width: 1200px;
    margin: 2rem auto 0;
    text-align: center;
  }

  .btn-action {
    display: inline-block;
    padding: 0.85rem 2.5rem;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: var(--ocean-deep);
    border: none;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .btn-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6,214,160,0.3);
  }

  /* ===== TAB 3: BULLETIN BOARD ===== */
  .board-header {
    max-width: 900px;
    margin: 0 auto 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .board-header h2 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--ocean-deep);
  }

  /* Modal */
  .modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 10010;
    background: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
    padding: 1rem;
  }

  .modal-overlay.show { display: flex; }

  .modal-box {
    background: var(--white);
    border-radius: 24px;
    padding: 2.5rem;
    max-width: 640px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  }

  #chatModal .chat-modal-box {
    max-width: none;
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    padding: 0;
    overflow: hidden;
  }

  .modal-box h3 {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--ocean-deep);
    margin-bottom: 1.5rem;
  }

  .form-group {
    margin-bottom: 1.2rem;
  }

  .form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #555;
    margin-bottom: 0.4rem;
  }

  .form-group input:not([type="checkbox"]):not([type="radio"]),
  .form-group textarea,
  .form-group select {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    font-size: 0.9rem;
    font-family: 'Noto Sans JP', sans-serif;
    outline: none;
    transition: border-color 0.2s;
    background: var(--white);
  }

  .form-group input:not([type="checkbox"]):not([type="radio"]):focus,
  .form-group textarea:focus,
  .form-group select:focus {
    border-color: var(--ocean-light);
  }

  .form-group textarea { resize: vertical; min-height: 100px; }

  .form-tags-input {
    display: flex;
    gap: 0.4rem 1.4rem;
    flex-wrap: wrap;
    align-items: center;
  }

  .form-tags-input label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    color: #555;
    /* Safari の inline-flex は CJK テキストを 1 文字単位で改行することがあ
       るため、ラベル全体を 1 行に固定し、shrink も禁止する。 */
    white-space: nowrap;
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
  }

  .form-tags-input label input[type="checkbox"] {
    flex-shrink: 0;
    width: 1rem;
    height: 1rem;
    margin: 0;
    padding: 0;
    vertical-align: middle;
    accent-color: var(--ocean-mid);
  }

  /* 研究者サイト URL リスト（ラベル＋URL の複数エントリ） */
  .form-group .research-link-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }
  .form-group .research-link-row {
    display: flex;
    gap: 0.4rem;
    align-items: center;
  }
  .form-group .research-link-row > input.research-link-label,
  .form-group .research-link-row > input.research-link-url {
    width: auto;
    padding: 0.5rem 0.7rem;
    font-size: 0.85rem;
    border: 1.5px solid rgba(0,0,0,0.08);
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--white);
    outline: none;
    transition: border-color 0.2s;
  }
  .form-group .research-link-row > input.research-link-label:focus,
  .form-group .research-link-row > input.research-link-url:focus {
    border-color: var(--ocean-light);
  }
  .form-group .research-link-row > input.research-link-label {
    flex: 0 0 9.5rem;
  }
  .form-group .research-link-row > input.research-link-url {
    flex: 1 1 auto;
    min-width: 0;
  }
  .form-group .research-link-row > .research-link-remove {
    flex: 0 0 auto;
    width: 30px; height: 30px;
    border: none;
    background: rgba(255,107,107,0.1);
    color: #c33;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.85rem;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background 0.2s, color 0.2s;
  }
  .form-group .research-link-row > .research-link-remove:hover {
    background: #c33; color: #fff;
  }
  .research-link-add-btn {
    margin-top: 0.5rem;
    padding: 0.45rem 0.95rem;
    background: rgba(58,175,220,0.1);
    color: var(--ocean-mid);
    border: 1px dashed rgba(58,175,220,0.5);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 600;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.2s, color 0.2s, border-color 0.2s, border-style 0.2s;
  }
  .research-link-add-btn:hover {
    background: var(--ocean-light); color: #fff; border-color: var(--ocean-light); border-style: solid;
  }
  .research-link-add-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
  }
  @media (max-width: 640px) {
    .form-group .research-link-row { flex-wrap: wrap; }
    .form-group .research-link-row > input.research-link-label,
    .form-group .research-link-row > input.research-link-url {
      flex: 1 1 100%;
    }
    .form-group .research-link-row > .research-link-remove {
      align-self: flex-end;
    }
  }

  .modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
  }

  .btn-cancel {
    padding: 0.7rem 1.5rem;
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: 12px;
    background: transparent;
    color: #666;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 0.85rem;
    transition: all 0.2s;
  }

  .btn-cancel:hover { border-color: rgba(0,0,0,0.2); }

  .btn-submit {
    padding: 0.7rem 2rem;
    background: linear-gradient(135deg, var(--ocean-light), var(--mint));
    color: var(--ocean-deep);
    border: none;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 0.85rem;
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(6,214,160,0.3);
  }

  /* Board posts */
  .board-posts {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .board-post {
    background: var(--white);
    border-radius: 20px;
    padding: 1.8rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    border: 2px solid rgba(0,0,0,0.04);
    transition: box-shadow 0.2s;
  }

  .board-post:hover {
    box-shadow: 0 6px 25px rgba(0,0,0,0.08);
  }

  .post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
  }

  .post-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--ocean-deep);
    line-height: 1.4;
  }

  .post-meta {
    font-size: 0.75rem;
    color: #999;
    white-space: nowrap;
  }

  .post-author {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.6rem;
  }

  .post-author strong { color: var(--ocean-mid); }

  .post-body {
    font-size: 0.88rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 1rem;
    white-space: pre-wrap;
  }

  .post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
  }

  .post-tag {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    background: rgba(10,36,99,0.06);
    color: var(--ocean-mid);
  }

  .post-tag.announcement { background: rgba(255,209,102,0.25); color: #815b00; }
  .post-tag.recruiting { background: rgba(6,214,160,0.15); color: #059669; }
  .post-tag.discussion { background: rgba(199,125,255,0.15); color: #7B2FBE; }
  .post-tag.dataset-suggestion { background: rgba(255,209,102,0.2); color: #b38600; }
  .post-tag.completed { background: rgba(0,0,0,0.06); color: #888; }
  .board-post.is-pinned {
    border: 1.5px solid rgba(255,180,40,0.55);
    background: linear-gradient(180deg, rgba(255,209,102,0.08) 0%, rgba(255,255,255,1) 32%);
    box-shadow: 0 6px 20px rgba(180, 130, 40, 0.08);
  }
  .post-pinned-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    background: rgba(255,180,40,0.18);
    color: #8a5d00;
    border: 1px solid rgba(255,180,40,0.45);
    border-radius: 999px;
    padding: 0.05rem 0.55rem;
    font-size: 0.7rem;
    font-weight: 700;
    margin-right: 0.5rem;
    vertical-align: middle;
  }

  .post-actions {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    flex-wrap: wrap;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(0,0,0,0.06);
  }

  .btn-interest {
    padding: 0.45rem 1rem;
    border: 2px solid var(--ocean-light);
    border-radius: 100px;
    background: transparent;
    color: var(--ocean-mid);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transition: all 0.2s;
  }

  .btn-interest:hover {
    background: var(--ocean-light);
    color: var(--white);
  }

  .btn-interest.joined {
    background: var(--ocean-light);
    color: var(--white);
    border-color: var(--ocean-light);
  }

  /* 既に参加が承認されているプロジェクト: 押下不可の「参加中」バッジ */
  .btn-interest.is-member,
  .btn-interest.is-member:hover {
    background: #1f9d55;
    color: var(--white);
    border-color: #1f9d55;
    cursor: default;
  }

  .interest-count {
    font-size: 0.78rem;
    color: #888;
  }

  .btn-toggle-comments {
    padding: 0.45rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 100px;
    background: transparent;
    color: #888;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transition: all 0.2s;
    margin-left: auto;
  }

  .btn-toggle-comments:hover { border-color: rgba(0,0,0,0.2); color: #555; }

  /* Comments */
  .comments-section-inline { display: block !important; }
  .comment-hint {
    font-size: 0.7rem;
    color: #888;
    margin-top: 0.4rem;
    line-height: 1.6;
  }
  .comment-hint kbd {
    background: rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.12);
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: 0 0.3rem;
    font-size: 0.7rem;
    font-family: 'Noto Sans JP', sans-serif;
    color: #555;
    margin: 0 0.1rem;
  }
  .comments-preview { padding: 0.4rem 0; }
  .comments-full {
    max-height: 360px;
    overflow-y: auto;
    padding: 0.4rem 0.6rem;
    background: rgba(58,175,220,0.04);
    border-radius: 10px;
    margin: 0.4rem 0;
  }
  .btn-show-all-comments {
    display: inline-block;
    margin: 0.4rem 0;
    padding: 0.35rem 0.9rem;
    background: rgba(58,175,220,0.08);
    border: 1px solid rgba(58,175,220,0.25);
    border-radius: 100px;
    color: var(--ocean-mid);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    transition: background 0.15s;
  }
  .btn-show-all-comments:hover {
    background: rgba(58,175,220,0.16);
    border-color: var(--ocean-light);
  }

  .comments-section {
    display: none;
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px dashed rgba(0,0,0,0.08);
  }

  .comments-section.open { display: block; }

  .comment-item {
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
  }

  .comment-item:last-of-type { border-bottom: none; }

  .comment-meta {
    font-size: 0.75rem;
    color: #999;
    margin-bottom: 0.3rem;
  }

  .comment-meta strong { color: #666; }

  .comment-text {
    font-size: 0.85rem;
    color: #555;
    line-height: 1.7;
    white-space: pre-wrap;
  }

  .comment-form {
    display: flex;
    gap: 0.6rem;
    margin-top: 1rem;
    flex-wrap: wrap;
  }

  .comment-form input {
    padding: 0.6rem 0.8rem;
    border: 2px solid rgba(0,0,0,0.06);
    border-radius: 10px;
    font-size: 0.82rem;
    outline: none;
    font-family: 'Noto Sans JP', sans-serif;
    width: 120px;
  }

  .comment-form textarea {
    flex: 1;
    min-width: 200px;
    padding: 0.6rem 0.8rem;
    border: 2px solid rgba(0,0,0,0.06);
    border-radius: 10px;
    font-size: 0.82rem;
    outline: none;
    resize: vertical;
    min-height: 44px;
    font-family: 'Noto Sans JP', sans-serif;
  }

  .comment-form input:focus, .comment-form textarea:focus {
    border-color: var(--ocean-light);
  }

  .comment-form button {
    padding: 0.6rem 1.2rem;
    background: var(--ocean-mid);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transition: background 0.2s;
    align-self: flex-end;
  }

  .comment-form button:hover { background: var(--ocean-deep); }

  .post-edit-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
  }

  .btn-edit-post, .btn-delete-post {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.1);
    background: transparent;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    transition: all 0.2s;
  }

  .btn-edit-post { color: var(--ocean-mid); }
  .btn-edit-post:hover { background: rgba(30,95,168,0.08); }
  .btn-delete-post { color: var(--coral); }
  .btn-delete-post:hover { background: rgba(255,107,107,0.08); }

  .empty-board {
    text-align: center;
    padding: 4rem 2rem;
    color: #999;
  }

  .empty-board p { font-size: 0.95rem; line-height: 1.8; }

  /* ===== FOOTER ===== */
  footer {
    background: #070F2B;
    padding: 2rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
  }

  footer .logo-text {
    font-family: 'Unbounded', sans-serif;
    font-weight: 900;
    font-size: 1rem;
    color: var(--white);
  }

  footer .logo-text span { color: var(--ocean-light); }

  footer p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.35);
  }

  /* ===== RESPONSIVE ===== */
  @media (max-width: 768px) {
    nav { padding: 0.8rem 1.5rem; }
    .tab-nav { padding: 1rem 1rem 0; }
    .tab-btn { padding: 0.6rem 1rem; font-size: 0.8rem; }
    .tab-panel { padding: 1.5rem 1rem; }
    .filter-bar { flex-direction: column; }
    .filter-bar input, .filter-bar select { width: 100%; }
    .data-grid { grid-template-columns: 1fr; }
    footer { flex-direction: column; text-align: center; }
    .modal-box { padding: 1.5rem; }
    #chatModal .chat-modal-box { padding: 0; }
    .board-header { flex-direction: column; align-items: stretch; }
  }

  /* ===== Mobile (smartphone) ===== */
  @media (max-width: 640px) {
    /* Top nav: 1 行を維持しつつ各要素を縮小。重要度の低いラベルは
       アイコン化／非表示にして空間を確保。 */
    nav {
      padding: 0.5rem 0.7rem;
      gap: 0.35rem;
      flex-wrap: nowrap;
    }
    .nav-logo { gap: 0.4rem; flex-shrink: 0; }
    .nav-logo img { width: 30px; height: 30px; }
    .nav-logo-text { font-size: 0.95rem; letter-spacing: 0.05em; }
    .nav-right-group {
      gap: 0.3rem;
      flex-wrap: nowrap;
      overflow-x: auto;
      justify-content: flex-end;
      -webkit-overflow-scrolling: touch;
      min-width: 0;
    }
    .nav-right-group::-webkit-scrollbar { display: none; }
    .nav-right-group > * { height: 32px; font-size: 0.74rem; flex-shrink: 0; }
    .nav-pill { padding: 0 0.5rem; }
    .nav-pill span { display: none; }   /* 「利用規約」テキストはアイコンのみに */
    .nav-chat-btn { padding: 0 0.7rem; gap: 0.25rem; }
    .nav-chat-btn span { display: inline; font-size: 0.76rem; }
    .nav-back { font-size: 0.72rem; padding: 0 0.4rem; }
    .nav-session-chip .nav-session-mode { display: none; } /* "GATE/DEMO" バッジは非表示 */

    /* ヒーロー: 詰めて表示 */
    .hero-mini { padding: 5rem 1rem 1.6rem; }
    .hero-mini .section-tag { font-size: 0.62rem; padding: 0.2rem 0.7rem; margin-bottom: 0.5rem; }
    .hero-mini h1 { font-size: clamp(1.2rem, 5.5vw, 1.6rem); margin-bottom: 0.5rem; }
    .hero-mini p { font-size: 0.78rem; line-height: 1.65; }
    .hero-mini::before { font-size: 22vw; }

    /* タブナビ: 横スクロールに切替えて折り返さない（押しやすさ重視） */
    .tab-nav {
      flex-wrap: nowrap;
      overflow-x: auto;
      overflow-y: hidden;
      scroll-snap-type: x proximity;
      -webkit-overflow-scrolling: touch;
      gap: 0.25rem;
      padding: 0.6rem 0.8rem 0;
      justify-content: flex-start;
      top: 50px;  /* nav が 1 行に収まるので元のオフセットに合わせる */
    }
    .tab-nav::-webkit-scrollbar { height: 4px; }
    .tab-btn {
      flex-shrink: 0;
      padding: 0.5rem 0.8rem;
      font-size: 0.78rem;
      scroll-snap-align: start;
    }
    .tab-panel { padding: 1.1rem 0.7rem 2rem; }

    /* 掲示板: 投稿カード周りを詰める */
    .board-post { padding: 1rem 0.85rem; }
    .post-title { font-size: 1rem; line-height: 1.5; }
    .post-author { font-size: 0.78rem; }
    .post-actions, .post-edit-actions {
      flex-direction: column;
      align-items: stretch;
      gap: 0.4rem;
    }
    .post-edit-actions .btn-chat-open {
      margin-right: 0 !important;
      justify-content: center;
      font-size: 0.8rem;
    }
    .btn-edit-post, .btn-delete-post { width: 100%; }
    .comment-form {
      flex-direction: column;
      gap: 0.35rem;
    }
    .comment-form textarea { width: 100%; }
    .comment-form button { width: 100%; }
    .comment-hint { font-size: 0.7rem; flex-wrap: wrap; }

    /* 検索バーまわり */
    .board-search { flex-direction: column; align-items: stretch; gap: 0.45rem; }
    .board-search input, .board-search select { width: 100%; }

    /* チャットモーダルヘッダ: ロゴと戻るだけにして縦に詰める */
    .chat-modal-header { padding: 0.55rem 0.8rem; flex-wrap: wrap; gap: 0.5rem; }
    .chat-modal-logo img { width: 28px; height: 28px; }
    .chat-modal-logo-text { font-size: 0.95rem; }
    .chat-modal-back { padding: 0.3rem 0.7rem; font-size: 0.75rem; }

    /* チャット本体: 入力欄を縦並びに */
    .chat-composer { flex-direction: column; align-items: stretch; }
    .chat-send-stack { flex-direction: row; gap: 0.4rem; }
    .chat-send-stack .btn-submit,
    .chat-send-stack .wizard-inline-btn {
      flex: 1;
      align-self: stretch;
    }
    .chat-input-hint { font-size: 0.65rem; }
    .chat-input-row { padding: 0.55rem 0.8rem 0.7rem; }
    .chat-search-wrapper { padding: 0.45rem 0.7rem 0.3rem; }
    .chat-search-bar { gap: 0.25rem; padding: 0.3rem 0.5rem; }
    .chat-search-bar input { font-size: 0.82rem; }
    .chat-search-shortcut { display: none; }   /* mobile はキーボードショートカット非表示 */
    .chat-message { padding: 0.6rem 0.7rem; }
    .chat-message .body { font-size: 0.85rem; }
    .chat-room-nav, .chat-sidebar { font-size: 0.85rem; }

    /* 管理タブ: ユーザー一覧テーブル等を横スクロール */
    .admin-users-list, .admin-user-row { font-size: 0.78rem; }
    .admin-user-row { flex-wrap: wrap; gap: 0.35rem; }
    .preapproval-form { gap: 0.5rem; }
    .preapproval-list { font-size: 0.8rem; }

    /* メンバー一覧グリッド: 1列に */
    .members-grid, .data-grid { grid-template-columns: 1fr !important; gap: 0.7rem; }
    .members-search-row { flex-direction: column; align-items: stretch; gap: 0.4rem; }
    .members-search-row input, .members-search-row select { width: 100%; }

    /* モーダル: 画面幅いっぱいに */
    .modal-overlay { padding: 0.5rem; }
    .modal-box { padding: 1rem; max-height: 92vh; }
    .modal-box h3 { font-size: 1rem; }
    .form-group label { font-size: 0.82rem; }
    .form-group input, .form-group select, .form-group textarea { font-size: 0.9rem; }
    .modal-actions { flex-direction: column-reverse; gap: 0.4rem; }
    .modal-actions button { width: 100%; }

    /* ゲート画面: 縦詰めを強める */
    .gate-box { padding: 1.2rem 1rem; max-width: 92vw; }
    .gate-icon { font-size: 2.2rem; }
    .gate-box h2 { font-size: 1.1rem; }
    .gate-box p { font-size: 0.82rem; }

    /* メンションドロップダウン: 画面幅に合わせて広げる */
    .mention-dropdown { max-width: calc(100vw - 16px); }
  }

  /* タッチ操作: タップ可能領域を最低 40px 確保 */
  @media (hover: none) and (pointer: coarse) {
    .tab-btn,
    .btn-action,
    .btn-submit,
    .btn-cancel,
    .nav-chat-btn,
    .nav-bell,
    .nav-pill,
    .btn-interest,
    .btn-edit-post,
    .btn-delete-post,
    .btn-chat-open {
      min-height: 40px;
    }
  }