/* ================================================================
   TIKI 智能题库 — Premium Full-Bleed Design System
   ================================================================ */

/* --- Design Tokens --- */
:root {
  --primary: #0066cc;
  --primary-light: #2997ff;
  --primary-glow: rgba(0, 102, 204, 0.15);
  --ink: #1d1d1f;
  --ink-light: #333333;
  --ink-muted: #7a7a7a;
  --canvas: #ffffff;
  --parchment: #f5f5f7;
  --dark-1: #1c1c1e;
  --dark-2: #232325;
  --dark-3: #2c2c2e;
  --black: #000000;
  --hairline: rgba(0,0,0,0.08);
  --divider: #f0f0f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-product: rgba(0,0,0,0.22) 3px 5px 30px;

  --font-display: "SF Pro Display", "Inter", system-ui, -apple-system, sans-serif;
  --font-text: "SF Pro Text", "Inter", system-ui, -apple-system, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  --nav-h: 48px;
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-text);font-size:17px;font-weight:400;line-height:1.5;color:var(--ink);background:var(--canvas);overflow-x:hidden}

/* --- Typography --- */
h1,.hero{font-family:var(--font-display);font-size:clamp(40px,6vw,72px);font-weight:700;line-height:1.05;letter-spacing:-0.04em}
h2,.heading-xl{font-family:var(--font-display);font-size:clamp(32px,4.5vw,56px);font-weight:600;line-height:1.1;letter-spacing:-0.03em}
h3,.heading-lg{font-family:var(--font-display);font-size:clamp(24px,3vw,40px);font-weight:600;line-height:1.15;letter-spacing:-0.02em}
.heading-md{font-family:var(--font-display);font-size:28px;font-weight:600;line-height:1.2;letter-spacing:-0.01em}
.heading-sm{font-family:var(--font-text);font-size:21px;font-weight:600;line-height:1.25}
.body-lg{font-size:19px;line-height:1.6;color:var(--ink-light)}
.body-muted{font-size:15px;line-height:1.5;color:var(--ink-muted)}
.caption{font-size:13px;line-height:1.4;color:var(--ink-muted);letter-spacing:-0.01em}
.caption-strong{font-size:13px;font-weight:600;line-height:1.4;color:var(--ink);letter-spacing:-0.01em}
.fine{font-size:12px;color:var(--ink-muted)}

.on-dark{color:#fff}
.on-dark .body-lg{color:rgba(255,255,255,0.75)}
.on-dark .body-muted,.on-dark .caption{color:rgba(255,255,255,0.55)}

/* --- Links --- */
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:#0055aa}

/* --- Global Nav --- */
.global-nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:rgba(0,0,0,0.88);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);z-index:1000;display:flex;align-items:center;padding:0 32px}
.global-nav-inner{width:100%;max-width:1500px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;position:relative}
.global-nav-logo{font-family:var(--font-display);font-size:18px;font-weight:700;color:#fff;letter-spacing:-0.02em;display:flex;align-items:center;gap:8px;text-decoration:none;line-height:1;flex-shrink:0}
.global-nav-logo:hover{color:#fff;opacity:.85}
.global-nav-logo-img{width:28px;height:28px;border-radius:50%;object-fit:contain;flex-shrink:0}
.global-nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;background:rgba(255,255,255,0.06);border-radius:var(--radius-pill);padding:3px;position:absolute;left:50%;transform:translateX(-50%)}
.global-nav-links .nav-item{position:relative;font-size:18px;font-weight:500;line-height:1;color:rgba(255,255,255,0.6);padding:8px 20px;border-radius:var(--radius-pill);transition:all .25s;letter-spacing:0.01em;text-decoration:none;display:inline-block}
.global-nav-links .nav-item:hover{color:#fff;text-decoration:none}
.global-nav-links .nav-item.active{color:#fff;background:rgba(255,255,255,0.15);font-weight:600}
.global-nav-actions{display:flex;align-items:center;gap:16px}
.nav-user-tag{font-size:14px;color:rgba(255,255,255,0.5);padding:6px 16px;border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-pill);background:transparent;text-decoration:none;cursor:pointer}

/* Notification Bell & Dropdown */
.notify-bell{position:relative;cursor:pointer;font-size:16px;color:rgba(255,255,255,0.65);padding:4px;transition:color .2s;background:none;border:none;line-height:1}
.notify-bell:hover{color:#fff}
.notify-badge{position:absolute;top:-2px;right:-4px;width:16px;height:16px;border-radius:50%;background:#e04040;color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}
.notify-dropdown{position:absolute;top:100%;right:0;margin-top:10px;width:380px;max-height:480px;overflow-y:auto;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);box-shadow:0 16px 48px rgba(0,0,0,0.18);z-index:1100;opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .2s}
.notify-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}
.notify-dropdown-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--divider);position:sticky;top:0;background:var(--canvas);border-radius:var(--radius-lg) var(--radius-lg) 0 0;z-index:1}
.notify-dropdown-title{font-weight:700;font-size:15px}
.notify-dropdown-actions{display:flex;gap:8px}
.notify-item{display:flex;gap:12px;padding:14px 20px;border-bottom:1px solid var(--divider);transition:background .15s;cursor:pointer}
.notify-item:hover{background:var(--parchment)}
.notify-item:last-child{border-bottom:none}
.notify-item.unread::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary);flex-shrink:0;margin-top:6px}
.notify-item-content{flex:1;min-width:0}
.notify-item-title{font-size:14px;font-weight:600;margin-bottom:2px}
.notify-item-text{font-size:12px;color:var(--ink-muted);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.notify-item-time{font-size:11px;color:var(--ink-muted);margin-top:4px}
.notify-overlay{position:fixed;inset:0;z-index:1099;display:none}
.notify-overlay.show{display:block}

/* Announcement cards (homepage) */
.announce-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:20px 24px;display:flex;gap:16px;align-items:flex-start;transition:all .2s}
.announce-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.announce-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex-shrink:0;margin-top:6px}
.announce-card.new .announce-dot{background:#e04040;box-shadow:0 0 0 4px rgba(224,64,64,0.15)}

/* offset for fixed nav */
main{padding-top:var(--nav-h)}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;font-family:var(--font-text);font-weight:500;transition:all .2s cubic-bezier(.25,.1,.25,1);white-space:nowrap;text-decoration:none}
.btn:active{transform:scale(.96)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

.btn-primary{background:var(--primary);color:#fff;font-size:16px;border-radius:var(--radius-pill);padding:13px 28px;letter-spacing:-0.01em}
.btn-primary:hover{background:#0055aa;color:#fff;box-shadow:0 4px 16px rgba(0,102,204,0.35);transform:translateY(-1px)}

.btn-secondary{background:transparent;color:var(--primary);font-size:16px;border-radius:var(--radius-pill);border:1.5px solid var(--primary);padding:13px 28px;letter-spacing:-0.01em}
.btn-secondary:hover{background:rgba(0,102,204,0.04);transform:translateY(-1px)}
#confirmSearch{padding-left:20px;padding-right:20px}

.btn-hero{background:var(--primary);color:#fff;font-size:18px;font-weight:600;border-radius:var(--radius-pill);padding:16px 36px;letter-spacing:-0.01em}
.btn-hero:hover{background:#0055aa;color:#fff;box-shadow:0 8px 30px rgba(0,102,204,0.4);transform:translateY(-2px)}

.btn-dark{background:rgba(255,255,255,0.12);color:#fff;font-size:14px;border-radius:var(--radius-sm);padding:9px 18px;border:1px solid rgba(255,255,255,0.15);backdrop-filter:blur(8px)}
.btn-dark:hover{background:rgba(255,255,255,0.2);color:#fff}

.btn-ghost{background:transparent;color:var(--ink);font-size:14px;border-radius:var(--radius-sm);padding:9px 18px;border:1px solid var(--hairline)}
.btn-ghost:hover{background:var(--divider);border-color:#ddd}

.btn-danger{background:#e04040;color:#fff;font-size:14px;border-radius:var(--radius-sm);padding:9px 18px;border:none;cursor:pointer;transition:all .15s}
.btn-danger:hover{background:#c62828;box-shadow:0 4px 12px rgba(224,64,64,0.3)}

.btn-outline-light{background:transparent;color:#fff;font-size:16px;border-radius:var(--radius-pill);border:1.5px solid rgba(255,255,255,0.4);padding:13px 28px}
.btn-outline-light:hover{background:rgba(255,255,255,0.08);border-color:#fff;color:#fff;transform:translateY(-1px)}

/* --- Chips --- */
.chip{display:inline-flex;align-items:center;padding:5px 14px;font-size:13px;font-weight:500;border-radius:var(--radius-pill);border:1px solid transparent;background:transparent;color:var(--ink-muted);cursor:pointer;transition:all .2s;white-space:nowrap}
.chip:hover{color:var(--ink);background:rgba(0,0,0,0.04)}
.chip.active,.chip.selected{color:var(--primary);background:rgba(0,102,204,0.06);font-weight:600;border-color:transparent}

/* --- Section Wrappers --- */
.section{position:relative;width:100%;overflow:hidden}
.section-inner{width:100%;max-width:1400px;margin:0 auto;padding:0 40px}
.section-padding{padding:100px 0}
.section-padding-sm{padding:60px 0}

.bg-canvas{background:var(--canvas)}
.bg-parchment{background:var(--parchment)}
.bg-dark{background:var(--dark-1)}
.bg-dark-2{background:var(--dark-2)}
.bg-black{background:var(--black)}

/* --- Decorative Background Elements --- */
.bg-grid{background-image:radial-gradient(circle,rgba(0,0,0,0.03) 1px,transparent 1px);background-size:24px 24px}
.bg-grid-light{background-image:radial-gradient(circle,rgba(255,255,255,0.04) 1px,transparent 1px);background-size:24px 24px}

.bg-accent-blob{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0}
.bg-accent-blob--tl{top:-20%;left:-15%;width:700px;height:700px;background:rgba(0,102,204,0.06)}
.bg-accent-blob--br{bottom:-15%;right:-10%;width:600px;height:600px;background:rgba(0,102,204,0.04)}
.bg-accent-blob--center{top:50%;left:50%;transform:translate(-50%,-50%);width:800px;height:800px;background:rgba(0,102,204,0.05)}

/* --- Hero Section --- */
.hero-section{min-height:92vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero-canvas{position:absolute;inset:0;pointer-events:none}
.hero-geo{position:absolute;border:2px solid rgba(255,255,255,0.06);border-radius:50%}
.hero-geo-1{width:900px;height:900px;top:-30%;right:-20%}
.hero-geo-2{width:600px;height:600px;bottom:-15%;left:-10%;border-color:rgba(255,255,255,0.04)}
.hero-geo-3{width:400px;height:400px;top:40%;left:55%;border-color:rgba(255,255,255,0.03);border-style:dashed}
.hero-content{position:relative;z-index:1;text-align:center;max-width:900px;padding:0 40px}
.hero-eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--primary);margin-bottom:24px;padding:6px 16px;background:rgba(0,102,204,0.08);border-radius:var(--radius-pill)}
.hero-subtitle{font-size:clamp(18px,2.5vw,22px);line-height:1.5;margin:24px 0 40px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}

/* --- Stat Bar --- */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:1}
.stat-card{text-align:center;padding:32px 24px;background:rgba(255,255,255,0.06);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,0.08);backdrop-filter:blur(8px)}
.stat-number{font-family:var(--font-display);font-size:clamp(36px,5vw,56px);font-weight:700;line-height:1;color:var(--primary);margin-bottom:8px}
.stat-label{font-size:15px;color:rgba(255,255,255,0.55)}

/* --- Feature Cards (Homepage) --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:1}
.feature-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius-lg);padding:40px 32px;transition:all .3s}
.feature-card:hover{transform:translateY(-4px);background:rgba(255,255,255,0.08);box-shadow:var(--shadow-lg)}
.feature-icon{font-size:36px;margin-bottom:20px;display:block}
.feature-card h3{font-size:22px;font-weight:600;color:#fff;margin-bottom:12px}
.feature-card p{font-size:15px;line-height:1.6;color:rgba(255,255,255,0.55)}
.feature-card .btn-arrow{margin-top:20px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:gap .2s}
.feature-card .btn-arrow:hover{gap:12px}

/* --- Content Cards --- */
.card-grid{columns:320px;column-gap:20px}
.card-grid>.body-muted,.card-grid>.empty-state{column-span:all;text-align:center;padding:60px 0}
.card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:28px;display:flex;flex-direction:column;gap:14px;transition:all .25s;position:relative;overflow:hidden;-webkit-column-break-inside:avoid;break-inside:avoid-column;margin-bottom:20px}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:transparent}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),#4da6ff);opacity:0;transition:opacity .25s}
.card:hover::before{opacity:1}
.card-title{font-size:17px;font-weight:600;line-height:1.4;color:var(--ink)}
.card-desc{font-size:14px;line-height:1.5;color:var(--ink-muted)}
.card-meta-knowledge{font-size:13px;color:var(--ink-muted);margin-left:2px}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.card-footer{display:flex;align-items:center;justify-content:flex-start;margin-top:auto;padding-top:14px;border-top:1px solid var(--divider)}

/* --- Markdown Preview --- */
.card-preview{font-size:15px;line-height:1.65;color:var(--ink);padding:4px 0}
.card-preview p{margin:0 0 8px}
.card-preview p:last-child{margin-bottom:0}
.card-preview ul,.card-preview ol{padding-left:20px;margin:4px 0 8px}
.card-preview li{margin-bottom:2px}
.card-preview strong{font-weight:600;color:var(--ink)}
.card-preview img{max-width:100%;max-height:180px;object-fit:contain;display:block;margin:0 auto}
.card-preview .img-grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0;margin:8px 0}
.card-preview .img-grid-2x2>*{display:flex;flex-direction:column;align-items:center;text-align:center}
.card-preview .img-grid-2x2 span{font-size:13px;font-weight:600;margin-bottom:4px}
.card-preview .img-grid-2x2 img{max-width:100%;max-height:140px}
.card-preview code{font-size:13px;background:rgba(0,0,0,0.05);padding:2px 6px;border-radius:4px;font-family:"SF Mono",Menlo,monospace}
.card-preview hr{border:none;border-top:1px solid var(--divider);margin:12px 0}

/* --- Difficulty Tags --- */
.difficulty-tag{display:inline-flex;align-items:center;padding:4px 14px;font-size:12px;font-weight:600;border-radius:var(--radius-pill);letter-spacing:0.02em}
.difficulty-简单{background:rgba(0,180,160,0.08);color:#00b4a0}
.difficulty-中等{background:rgba(0,102,204,0.08);color:var(--primary)}
.difficulty-困难{background:rgba(240,80,60,0.08);color:#e04040}

/* --- Modal --- */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:1000;display:flex;align-items:center;justify-content:center;padding:40px 20px;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s}
.modal-overlay.show{opacity:1;visibility:visible}
.modal-panel{background:var(--canvas);border-radius:var(--radius-lg);max-width:800px;width:100%;max-height:80vh;display:flex;flex-direction:column;position:relative;box-shadow:0 20px 60px rgba(0,0,0,0.15)}
.modal-close{position:absolute;top:12px;right:16px;background:none;border:none;font-size:28px;color:var(--ink-muted-48);cursor:pointer;line-height:1;padding:4px 8px;border-radius:var(--radius-sm);transition:color .15s}
.modal-close:hover{color:var(--ink)}
.modal-body{overflow-y:auto;padding:28px 32px 20px;display:flex;flex-direction:column;gap:18px}
.modal-body .modal-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink)}
.modal-body .modal-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--ink-muted-48)}
.modal-body .modal-section-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;color:var(--ink-muted-48)}
.modal-body .modal-answer-header{display:flex;align-items:center;gap:8px}
.modal-body .modal-eye-toggle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:none;cursor:pointer;border-radius:var(--radius-sm);color:var(--ink-muted-48);transition:color .15s,background .15s}
.modal-body .modal-eye-toggle:hover{color:var(--primary);background:rgba(0,102,204,0.08)}
.modal-body .modal-eye-toggle.revealed{color:var(--primary)}
.modal-body .modal-detail-content{padding:14px 0;background:var(--canvas-parchment);border-radius:var(--radius-sm);font-size:14px;line-height:1.6}
.modal-body .modal-detail-content img{max-width:100%;max-height:200px;object-fit:contain;display:block;margin:8px auto}
.modal-body .modal-content-body{font-size:15px;line-height:1.7;color:var(--ink)}
.modal-body .modal-content-body img{max-width:100%;max-height:200px;object-fit:contain;display:block;margin:8px auto}
.modal-body .img-grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0}
.modal-body .img-grid-2x2>*{display:flex;flex-direction:column;align-items:center;text-align:center}
.modal-body .img-grid-2x2 img{max-width:100%;max-height:200px}
.modal-footer{display:flex;justify-content:space-between;gap:12px;padding:12px 32px 20px;border-top:1px solid var(--hairline)}
.modal-footer .btn{padding:8px 20px;font-size:14px}
/* Report reason panel */
.report-reason-panel{padding:12px 32px 16px;border-top:1px solid var(--hairline);background:var(--divider)}
.report-reason-title{font-size:13px;font-weight:600;color:var(--ink-muted);margin-bottom:10px}
.report-reason-options{display:flex;flex-wrap:wrap;gap:6px 18px}
.report-reason-opt{font-size:13px;display:inline-flex;align-items:center;gap:4px;cursor:pointer;color:var(--ink)}
.report-reason-opt input[type="radio"]{margin:0;cursor:pointer}
.report-reason-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}
#modalBookmark.favorited, #qdetailBookmark.favorited{background:#22aa55;border-radius:var(--radius-sm) 0 0 var(--radius-sm)}
#modalBookmark.favorited:hover, #qdetailBookmark.favorited:hover{background:#1a8a44}

.fav-folder-arrow{flex-shrink:0}
.fav-dropdown{position:absolute;bottom:100%;right:0;margin-bottom:4px;width:260px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);z-index:100;max-height:300px;overflow-y:auto}
.fav-dropdown-header{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600;padding:10px 14px 8px;border-bottom:1px solid var(--divider);color:var(--ink)}
.fav-dropdown-close{background:none;border:none;font-size:16px;color:var(--ink-muted);cursor:pointer;padding:0 2px;line-height:1}
.fav-dropdown-close:hover{color:var(--ink)}
.fav-dropdown-list{padding:4px 0}
.fav-folder-item{display:flex;align-items:center;gap:8px;padding:6px 14px;font-size:13px;cursor:pointer;transition:background .1s}
.fav-folder-item:hover{background:var(--parchment)}
.fav-folder-item input[type=checkbox]{accent-color:var(--primary)}
.fav-dropdown-footer{padding:6px 14px;border-top:1px solid var(--divider);display:flex;justify-content:flex-end}
.fav-dropdown-divider{font-size:11px;font-weight:600;color:var(--ink-muted);padding:4px 0 6px;text-transform:uppercase;letter-spacing:0.04em}
.fav-dropdown-create{padding:8px 14px 10px;border-top:1px solid var(--divider)}

/* Card inline favorite button */
.card-fav-btn{position:absolute;top:12px;right:12px;z-index:2;width:32px;height:32px;border:none;background:rgba(0,0,0,0.04);border-radius:50%;cursor:pointer;font-size:16px;color:var(--ink-muted);transition:color .15s,background .15s,transform .15s;line-height:1;display:flex;align-items:center;justify-content:center;padding:0}
.card-fav-btn:hover{background:rgba(0,0,0,0.08);color:#e8a850;transform:scale(1.1)}
.card-fav-btn.favorited{color:#f5a623;background:rgba(245,166,35,0.1)}
.card-fav-btn.favorited:hover{color:#e04040;background:rgba(224,64,64,0.1)}

/* Floating favorite dropdown (for card buttons) */
.fav-dropdown-float{position:fixed;width:260px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:2100;max-height:320px;overflow-y:auto}

@media(max-width:640px){
  .modal-panel{max-height:90vh;border-radius:var(--radius-md)}
  .modal-body{padding:20px 18px 16px}
  .modal-footer{padding:12px 18px 20px}
}

/* --- Paper/Question specific card --- */
.paper-stats{display:flex;gap:24px;flex-wrap:wrap}
.paper-stat{display:flex;flex-direction:column;gap:2px}
.paper-stat-val{font-size:20px;font-weight:700;color:var(--ink);font-family:var(--font-display)}
.paper-stat-lbl{font-size:12px;color:var(--ink-muted);text-transform:uppercase;letter-spacing:0.04em}

/* --- Paper list (exam search results) --- */
.paper-list{display:flex;flex-direction:column;border:1px solid var(--hairline);border-radius:var(--radius-md);overflow:hidden}
.paper-row{display:flex;align-items:center;gap:16px;padding:14px 20px;background:var(--canvas);border-bottom:1px solid var(--hairline);cursor:pointer;transition:background .15s}
.paper-row:last-child{border-bottom:none}
.paper-row:hover{background:rgba(0,102,204,0.02)}
.paper-row-name{flex:1;min-width:0;font-size:14px;font-weight:500;color:var(--ink);line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.status-badge{display:inline-block;font-size:11px;font-weight:600;padding:1px 7px;border-radius:var(--radius-pill);margin-right:8px;vertical-align:middle;line-height:1.6}
.status-draft{background:rgba(245,158,11,0.1);color:#b45309}
.status-published{background:rgba(13,148,136,0.1);color:#0f766e}
.paper-row-tags{display:flex;gap:6px;flex-shrink:0;flex-wrap:nowrap}
.paper-row-year{font-size:13px;color:var(--ink-muted-48);flex-shrink:0;min-width:100px;text-align:center;white-space:nowrap}
.paper-row-count{font-size:13px;font-weight:500;color:var(--primary);flex-shrink:0;min-width:80px;text-align:right;white-space:nowrap}
@media(max-width:768px){
  .paper-row{flex-wrap:wrap;gap:8px}
  .paper-row-name{white-space:normal}
}
.paper-row *{cursor:pointer}

/* --- Paper Preview Page --- */
.paper-header{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:32px;margin-bottom:32px}
.paper-header-title{font-family:var(--font-display);font-size:28px;font-weight:700;letter-spacing:-0.02em;line-height:1.3;margin-bottom:16px}
.paper-header-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.paper-header-meta .paper-stat{display:flex;flex-direction:column;gap:2px;padding:0 16px;border-right:1px solid var(--hairline)}
.paper-header-meta .paper-stat:last-child{border-right:none}
.paper-header-meta .paper-stat-val{font-size:20px;font-weight:700}
.paper-header-meta .paper-stat-lbl{font-size:12px;color:var(--ink-muted);text-transform:uppercase;letter-spacing:0.04em}

.paper-question-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);padding:24px 28px;margin-bottom:16px}
.paper-question-card .question-number{font-size:13px;font-weight:600;color:var(--primary);line-height:26px;white-space:nowrap}
.paper-question-card .question-content{font-size:15px;line-height:1.7;color:var(--ink);margin-bottom:12px}
.paper-question-card .question-content img{max-width:100%;max-height:200px;object-fit:contain;display:block;margin:8px auto}
.paper-question-card .question-content .img-grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0}
.paper-question-card .question-content .img-grid-2x2>*{display:flex;flex-direction:column;align-items:center;text-align:center}
.paper-question-card .question-content .img-grid-2x2 img{max-width:100%;max-height:200px}

.paper-question-card .paper-detail-content .img-grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0}
.paper-question-card .paper-detail-content .img-grid-2x2>*{display:flex;flex-direction:column;align-items:center;text-align:center}
.paper-question-card .paper-detail-content .img-grid-2x2 img{max-width:100%;max-height:200px}

/* --- Markdown 表格：题目/解析里 marked 解析出的 GFM 表格 --- */
.card-preview table,
.question-content table,
.paper-detail-content table,
.modal-content-body table,
.modal-detail-content table{width:100%;border-collapse:collapse;margin:10px 0;font-size:.95em;line-height:1.5;table-layout:auto}
.card-preview th,.card-preview td,
.question-content th,.question-content td,
.paper-detail-content th,.paper-detail-content td,
.modal-content-body th,.modal-content-body td,
.modal-detail-content th,.modal-detail-content td{border:1px solid var(--hairline);padding:6px 10px;text-align:left;vertical-align:top;word-break:break-word}
.card-preview thead th,
.question-content thead th,
.paper-detail-content thead th,
.modal-content-body thead th,
.modal-detail-content thead th{background:var(--parchment);font-weight:600;color:var(--ink)}
.card-preview tbody tr:nth-child(even),
.question-content tbody tr:nth-child(even),
.paper-detail-content tbody tr:nth-child(even),
.modal-content-body tbody tr:nth-child(even),
.modal-detail-content tbody tr:nth-child(even){background:rgba(0,0,0,0.015)}

/* Question header row: number + tags on same line */
.paper-q-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.paper-q-tags{display:flex;align-items:center;gap:6px;flex-wrap:wrap}

/* Collapsible preview section */
.preview-section-body{overflow:hidden;transition:max-height .3s ease}
.preview-section-body.collapsed{max-height:0!important}
.preview-section-header .collapse-arrow{transition:transform .25s;display:inline-block;margin-left:8px;font-size:12px}
.preview-section-header.collapsed .collapse-arrow{transform:rotate(-90deg)}

.paper-answer-header{display:flex;align-items:center;gap:8px;margin-top:16px;padding-top:12px;border-top:1px solid var(--hairline)}
.paper-section-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;color:var(--ink-muted-48)}
.paper-eye-toggle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:none;cursor:pointer;border-radius:var(--radius-sm);color:var(--ink-muted-48);transition:color .15s,background .15s}
.paper-eye-toggle:hover{color:var(--primary);background:rgba(0,102,204,0.08)}
.paper-eye-toggle.revealed{color:var(--primary)}
.paper-detail-content{padding:14px 16px;background:var(--canvas-parchment);border-radius:var(--radius-sm);font-size:14px;line-height:1.6;margin-top:8px}
.paper-detail-content img{max-width:100%;max-height:200px;object-fit:contain;display:block;margin:8px auto}

.paper-q-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--ink-muted-48);margin:12px 0}

.paper-q-footer{display:flex;justify-content:flex-end;gap:12px;padding-top:12px;border-top:1px solid var(--hairline);margin-top:4px}
.paper-q-footer .btn{padding:8px 20px;font-size:14px}
.paper-fav-btn.favorited{background:#22aa55;color:#fff;border-color:#22aa55}
.paper-fav-btn.favorited:hover{background:#1a8a44;border-color:#1a8a44}

/* Question card action buttons (reorder, replace, delete) */
.paper-q-actions{display:flex;align-items:center;gap:2px;margin-left:auto;flex-shrink:0}
.q-action-btn{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border:1px solid var(--hairline);background:var(--canvas);border-radius:var(--radius-sm);cursor:pointer;color:var(--ink-muted-48);font-size:14px;line-height:1;padding:0;transition:all .15s}
.q-action-btn:hover{color:var(--primary);border-color:var(--primary);background:rgba(0,102,204,0.06)}
.q-action-btn:disabled{opacity:0.25;cursor:default;pointer-events:none}
.q-action-btn.q-action-delete:hover{color:#e04040;border-color:rgba(224,64,64,0.4);background:rgba(224,64,64,0.06)}

.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink-muted-48);margin-bottom:24px;cursor:pointer;text-decoration:none;transition:color .15s}
.back-link:hover{color:var(--primary)}

/* Back to top floating button */
.back-to-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;background:var(--canvas);border:1.5px solid var(--hairline);color:var(--ink-muted-48);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:900;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s,visibility .25s,transform .25s,box-shadow .25s;box-shadow:0 2px 12px rgba(0,0,0,0.08)}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{color:var(--primary);border-color:var(--primary);box-shadow:0 4px 20px rgba(0,102,204,0.15)}

/* --- Search --- */
.search-box{position:relative;width:100%;max-width:600px}
.search-input{width:100%;height:48px;background:var(--canvas);border:1.5px solid var(--hairline);border-radius:var(--radius-pill);padding:0 48px 0 24px;font-size:16px;color:var(--ink);outline:none;transition:all .25s;font-family:var(--font-text)}
.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,102,204,0.08)}
.search-input::placeholder{color:var(--ink-muted)}
.search-icon{position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:18px;color:var(--ink-muted);pointer-events:none}

/* --- Filter Bar --- */
.filter-bar{display:flex;flex-direction:column;gap:6px}
.filter-row{display:grid;grid-template-columns:54px 1fr;align-items:baseline;gap:4px}
.filter-label{font-size:12px;font-weight:600;color:var(--ink-muted);text-transform:uppercase;letter-spacing:0.08em;text-align:right;line-height:1.3}
.filter-chips{display:flex;flex-wrap:wrap;align-items:center;gap:4px}

/* --- Question Viewer --- */
.question-viewer{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-xl);padding:48px;position:relative}
.question-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.question-badge{font-size:13px;font-weight:600;color:var(--primary);background:rgba(0,102,204,0.06);padding:6px 14px;border-radius:var(--radius-pill)}
.question-body{font-size:17px;line-height:1.7;margin-bottom:32px;white-space:pre-wrap}
.option-list{display:flex;flex-direction:column;gap:10px;margin-bottom:32px}
.option-item{display:flex;align-items:center;gap:14px;padding:15px 20px;border:1.5px solid var(--hairline);border-radius:var(--radius-md);cursor:pointer;transition:all .2s}
.option-item:hover{border-color:var(--primary);background:rgba(0,102,204,0.02)}
.option-item.selected{border-color:var(--primary);background:rgba(0,102,204,0.06);box-shadow:0 0 0 3px rgba(0,102,204,0.08)}
.option-marker{width:28px;height:28px;border-radius:50%;border:2px solid var(--hairline);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;transition:all .2s}
.option-item.selected .option-marker{background:var(--primary);color:#fff;border-color:var(--primary)}
.option-text{font-size:16px;line-height:1.5}

/* --- Progress --- */
.progress-track{width:100%;height:6px;background:var(--divider);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;background:var(--primary);border-radius:3px;transition:width .4s cubic-bezier(.4,0,.2,1)}
.progress-info{display:flex;justify-content:space-between;margin-top:8px;font-size:12px;color:var(--ink-muted)}

/* --- Question Nav Sidebar --- */
.question-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.q-dot{aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);border:1.5px solid var(--hairline);font-size:12px;font-weight:600;cursor:pointer;transition:all .2s;background:var(--canvas)}
.q-dot:hover{border-color:var(--primary)}
.q-dot.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 8px rgba(0,102,204,0.3)}
.q-dot.done{background:rgba(0,102,204,0.08);border-color:rgba(0,102,204,0.3);color:var(--primary)}

/* --- Config Panel --- */
.config-panel{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-xl);padding:48px;box-shadow:var(--shadow-sm)}
.config-section{margin-bottom:36px}
.config-section:last-child{margin-bottom:0}
.config-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;letter-spacing:-0.01em}
.config-options{display:flex;flex-wrap:wrap;gap:10px}
.config-hint{font-size:13px;color:var(--ink-muted);margin-top:6px}

/* Range Slider */
.range-row{display:flex;align-items:center;gap:16px;max-width:500px}
.range-row .caption{min-width:45px}
.range-row input[type=range]{-webkit-appearance:none;flex:1;height:6px;background:var(--divider);border-radius:3px;outline:none}
.range-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 8px rgba(0,102,204,0.3);transition:transform .15s}
.range-row input[type=range]::-webkit-slider-thumb:active{transform:scale(1.15)}
.range-val{font-size:14px;font-weight:700;color:var(--primary);min-width:40px;text-align:right}

/* Dual-handle range slider for difficulty */
.dual-range-wrap{position:relative;height:44px;display:flex;align-items:center}
.dual-range-track{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);height:8px;border-radius:4px;background:var(--divider);overflow:hidden;pointer-events:none}
.dual-range-fill-easy{position:absolute;left:0;top:0;height:100%;background:#00b4a0;border-radius:4px 0 0 4px;transition:width .15s}
.dual-range-fill-medium{position:absolute;top:0;height:100%;background:var(--primary);transition:left .15s,width .15s}
.dual-range-fill-hard{position:absolute;right:0;top:0;height:100%;background:#e04040;border-radius:0 4px 4px 0;transition:width .15s}
.dual-range-wrap input[type=range]{-webkit-appearance:none;position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);width:100%;height:8px;background:transparent;pointer-events:none;margin:0;z-index:2}
.dual-range-wrap input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:#fff;border:2.5px solid var(--primary);cursor:pointer;pointer-events:all;box-shadow:0 2px 8px rgba(0,0,0,0.12);transition:transform .15s;position:relative;z-index:3}
.dual-range-wrap input[type=range]::-webkit-slider-thumb:active{transform:scale(1.2)}
.dual-range-wrap input[type=range]:disabled::-webkit-slider-thumb{opacity:0.4;cursor:not-allowed}
.dual-range-labels{display:flex;justify-content:space-between;margin-top:4px;font-size:12px;font-weight:600;color:var(--ink-muted)}
.dual-range-labels span:first-child{color:#00b4a0}
.dual-range-labels span:nth-child(2){color:var(--primary)}
.dual-range-labels span:last-child{color:#e04040}

/* Summary row inside config-section */
.config-summary{display:flex;gap:16px;margin-top:16px}
.config-summary-item{flex:1;padding:12px 16px;background:rgba(0,102,204,0.04);border-radius:var(--radius-md);display:flex;flex-direction:column;gap:2px}
.config-summary-item .summary-label{font-size:12px;color:var(--ink-muted)}
.config-summary-item .summary-value{font-family:var(--font-display);font-size:24px;font-weight:700;color:var(--primary)}

/* Question count stepper */
.stepper{display:flex;align-items:center;padding:10px 0;gap:16px}
.stepper+.stepper{border-top:1px solid var(--divider)}
.stepper-label{font-size:14px;font-weight:600;color:var(--ink);min-width:80px}
.stepper-controls{display:flex;align-items:center;gap:6px}
.stepper-btn{width:30px;height:30px;border-radius:var(--radius-sm);border:1.5px solid var(--hairline);background:var(--canvas);font-size:15px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;color:var(--ink-muted);line-height:1}
.stepper-btn:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,102,204,0.04)}
.stepper-btn:disabled{opacity:0.35;cursor:not-allowed;pointer-events:none}
.stepper-val{font-size:16px;font-weight:700;min-width:32px;text-align:center;color:var(--ink)}
.stepper-sep{font-size:14px;color:var(--ink-muted);margin:0 4px;user-select:none}

/* Score input inside stepper */
.stepper-score{display:flex;align-items:center;gap:4px}
.score-input{width:48px;height:30px;text-align:center;font-size:14px;font-weight:600;color:var(--ink);border:1.5px solid var(--hairline);border-radius:var(--radius-sm);outline:none;font-family:var(--font-text);transition:border-color .2s;background:var(--canvas)}
.score-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,0.08)}
.score-input[readonly],.score-input:read-only{background:var(--divider);cursor:not-allowed;opacity:0.7}
.score-input::-webkit-inner-spin-button{opacity:1}
.score-unit{font-size:12px;color:var(--ink-muted);white-space:nowrap;margin-left:2px}

/* --- Preview Section (Smart Exam) --- */
.preview-section{margin-bottom:16px}
.preview-section-header{display:flex;justify-content:space-between;align-items:center;padding:20px 28px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);cursor:pointer;transition:all .2s}
.preview-section-header:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.preview-section-title{font-size:18px;font-weight:600}
.preview-section-meta{font-size:14px;color:var(--ink-muted)}
.preview-items{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.preview-item{display:flex;gap:12px;align-items:center;padding:10px 20px;font-size:14px;border-bottom:1px solid var(--divider)}
.preview-item-num{font-weight:600;color:var(--primary);min-width:24px}
.preview-item-text{flex:1;color:var(--ink)}
.preview-item-diff{font-size:11px;padding:3px 8px;border-radius:var(--radius-pill);background:var(--divider);flex-shrink:0}

/* --- Footer --- */
.site-footer{background:var(--dark-1);padding:80px 40px 40px;color:rgba(255,255,255,0.5)}
.footer-inner{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
.footer-brand{font-family:var(--font-display);font-size:24px;font-weight:700;color:#fff;letter-spacing:-0.02em;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.6;color:rgba(255,255,255,0.4);max-width:320px}
.footer-col-title{font-size:13px;font-weight:600;color:rgba(255,255,255,0.6);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:18px}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,0.4);transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{max-width:1400px;margin:48px auto 0;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);display:flex;justify-content:space-between;font-size:12px;color:rgba(255,255,255,0.3)}

/* --- 2-column layout --- */
.layout-2col{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:start}
.layout-config{display:grid;grid-template-columns:420px 1fr;gap:32px;align-items:start}

/* --- Horizontal Rule --- */
.divider{width:100%;height:1px;background:var(--hairline);margin:0}

/* --- Profile Tabs --- */
.profile-tab{position:relative;font-family:var(--font-text);font-size:15px;font-weight:500;color:var(--ink-muted);padding:14px 28px;background:none;border:none;cursor:pointer;transition:all .2s;border-bottom:2px solid transparent}
.profile-tab:hover{color:var(--ink)}
.profile-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

.profile-folder-tab{font-family:var(--font-text);font-size:12px;font-weight:500;color:var(--ink-muted);padding:6px 14px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-pill);cursor:pointer;transition:all .15s;white-space:nowrap}
.profile-folder-tab:hover{color:var(--ink);border-color:#d0d0d0}
.profile-folder-tab.active{color:#fff;background:var(--primary);border-color:var(--primary);font-weight:600}

.profile-folder-del{font-family:var(--font-text);font-size:13px;font-weight:400;color:var(--ink-muted);padding:6px 8px 6px 6px;background:var(--canvas);border:1px solid var(--hairline);border-left:none;border-radius:0 var(--radius-pill) var(--radius-pill) 0;cursor:pointer;transition:all .15s;line-height:1}
.profile-folder-del:hover{color:#e04040;background:rgba(224,64,64,0.04);border-color:rgba(224,64,64,0.25)}

.replace-tab{font-family:var(--font-text);font-size:14px;font-weight:500;color:var(--ink-muted);padding:10px 20px;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .15s}
.replace-tab:hover{color:var(--ink)}
.replace-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.replace-fav-item:hover{background:rgba(0,102,204,0.04)}

/* --- Sub Tabs --- */
.sub-tab{position:relative;font-family:var(--font-text);font-size:14px;font-weight:500;color:var(--ink-muted);padding:10px 0 12px;background:none;border:none;cursor:pointer;transition:all .2s;margin-right:28px}
.sub-tab:hover{color:var(--ink)}
.sub-tab.active{color:var(--primary);font-weight:600}
.sub-tab.active::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--primary);border-radius:1px}

.hidden{display:none!important}

/* --- Chapter Tree (找题目 modal) --- */
.chapter-modal-tree{max-height:50vh;overflow-y:auto;padding:4px 0;border:1px solid var(--hairline);border-radius:var(--radius-sm)}
.chapter-modal-tree .caption{display:block;padding:12px 14px;font-size:13px;color:var(--ink-muted)}
.tree-node{display:flex;align-items:center;gap:4px;padding:4px 12px;cursor:pointer;font-size:13px;color:var(--ink);transition:background .1s;user-select:none}
.tree-node:hover{background:var(--parchment)}
.tree-arrow{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;font-size:9px;color:var(--ink-muted-48);flex-shrink:0;border-radius:2px;transition:transform .15s}
.tree-arrow.expanded{transform:rotate(90deg)}
.tree-check{width:15px;height:15px;border:1.5px solid var(--hairline);border-radius:3px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-size:9px;transition:all .15s;color:transparent;margin-right:2px}
.tree-check.checked{background:var(--primary);border-color:var(--primary);color:#fff}
.tree-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.4}
.tree-children{margin-left:0}
.tree-children.collapsed{display:none}

.chapter-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;background:var(--canvas);border:1.5px solid var(--hairline);border-radius:var(--radius-sm);color:var(--ink);font-family:var(--font-text);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;white-space:nowrap}
.chapter-btn:hover{background:var(--parchment);border-color:#d0d0d0}
.chapter-btn:active{transform:scale(.97)}
.chapter-btn.active{border-color:var(--primary);color:var(--primary);background:rgba(0,102,204,0.04)}
.chapter-btn-arrow{font-size:9px;color:var(--ink-muted);transition:transform .15s;flex-shrink:0}
.chapter-btn:hover .chapter-btn-arrow{color:var(--ink)}

/* --- Exam Draft Cards (AI组卷 list) --- */
.exam-draft-card .card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.exam-draft-card .card-name{font-size:17px;font-weight:600;color:var(--ink);line-height:1.3;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.exam-draft-card .card-delete{flex-shrink:0;width:28px;height:28px;border-radius:50%;border:none;background:transparent;color:var(--ink-muted);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;line-height:1}
.exam-draft-card .card-delete:hover{background:rgba(224,64,64,0.08);color:#e04040}
.card-delete{flex-shrink:0;width:32px;height:32px;border-radius:6px;border:1px solid var(--hairline);background:var(--canvas);color:var(--ink-muted-48);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;line-height:1}
.card-delete:hover{background:rgba(224,64,64,0.06);color:#e04040;border-color:rgba(224,64,64,0.25)}
.card-copy{flex-shrink:0;width:32px;height:32px;border-radius:6px;border:1px solid var(--hairline);background:var(--canvas);color:var(--ink-muted-48);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;line-height:1}
.card-copy:hover{background:rgba(0,102,204,0.06);color:var(--primary);border-color:rgba(0,102,204,0.25)}
.exam-draft-card .card-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.exam-draft-card .card-meta-row{display:flex;justify-content:space-between;align-items:center;margin-top:8px}
.exam-draft-card .card-date{font-size:12px;color:var(--ink-muted)}
.exam-draft-card .card-qcount{font-size:13px;font-weight:500;color:var(--primary)}

/* Empty state for exam drafts list */
.empty-drafts{text-align:center;padding:80px 20px}
.empty-drafts .empty-icon{font-size:48px;margin-bottom:16px;opacity:0.3}
.empty-drafts .empty-title{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:8px}
.empty-drafts .empty-desc{font-size:15px;color:var(--ink-muted);max-width:360px;margin:0 auto}

/* Toast notification */
.toast{position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--dark-1);color:#fff;padding:12px 28px;border-radius:var(--radius-pill);font-size:14px;font-weight:500;z-index:2000;opacity:0;transition:opacity .25s,transform .25s;pointer-events:none;box-shadow:0 8px 30px rgba(0,0,0,0.25)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Form input (text fields for modals) */
.form-input{width:100%;height:44px;background:var(--canvas);border:1.5px solid var(--hairline);border-radius:var(--radius-md);padding:0 16px;font-size:15px;color:var(--ink);outline:none;transition:border-color .2s;font-family:var(--font-text)}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,0.08)}
.form-input::placeholder{color:var(--ink-muted)}

/* Modal form row */
.modal-form-row{display:flex;flex-direction:column;gap:8px}
.modal-form-label{font-size:13px;font-weight:600;color:var(--ink);letter-spacing:-0.01em}

/* Practice card (每日刷卷) */
.practice-card {
  display: flex;
  gap: 0;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .2s;
  margin-bottom: 12px;
}
.practice-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border-color: #d0d0d0;
  transform: translateY(-1px);
}
.practice-card-accent {
  width: 4px;
  flex-shrink: 0;
  background: var(--primary);
  border-radius: 0;
}
.practice-card-accent.redeemed {
  background: #0f766e;
}
.practice-card-body {
  flex: 1;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.practice-card-main {
  flex: 1;
  min-width: 200px;
}
.practice-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.practice-card-source {
  font-size: 12px;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.practice-card-source img {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  object-fit: cover;
}
.practice-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 8px 22px;
  text-decoration: none;
  white-space: nowrap;
  transition: all .15s;
  flex-shrink: 0;
}
.practice-card-btn:hover {
  background: #0055aa;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,102,204,0.3);
  transform: translateY(-1px);
}

/* Inline edit title */
.title-input{font-family:var(--font-display);font-size:28px;font-weight:600;color:var(--ink);border:none;border-bottom:2px solid transparent;background:transparent;outline:none;padding:0 0 4px;width:100%;transition:border-color .2s;letter-spacing:-0.01em;line-height:1.2}
.title-input:focus{border-bottom-color:var(--primary)}
.title-input:hover:not(:focus){border-bottom-color:var(--hairline)}

/* Editor back bar */
.editor-topbar{display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap}

/* --- Tag --- */
.tag{display:inline-flex;align-items:center;padding:4px 10px;font-size:11px;font-weight:600;border-radius:var(--radius-pill);letter-spacing:0.02em}
.tag-blue{background:rgba(0,102,204,0.08);color:var(--primary)}
.tag-teal{background:rgba(0,180,160,0.08);color:#00b4a0}
.tag-amber{background:rgba(240,150,0,0.08);color:#f09600}
.tag-purple{background:rgba(128,0,200,0.08);color:#8000c8}

/* --- Responsive --- */
@media(max-width:1200px){
  .section-inner,.footer-inner,.footer-bottom,.global-nav-inner,.sub-nav-inner{padding-left:24px;padding-right:24px}
  .feature-grid{grid-template-columns:1fr 1fr}
  .layout-config{grid-template-columns:1fr}
  .layout-2col{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .global-nav-links{display:none}
  .sub-nav-links{display:none}
  .hero-section{min-height:80vh}
  .feature-grid,.stat-row{grid-template-columns:1fr}
  .card-grid{column-count:1}
  .section-padding{padding:60px 0}
  .config-panel{padding:28px}
  .question-viewer{padding:28px}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .paper-stats{gap:16px}
  .hero-actions{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  h1,.hero{font-size:36px}
  h2,.heading-xl{font-size:28px}
  .section-inner,.footer-inner,.footer-bottom,.global-nav-inner,.sub-nav-inner{padding-left:16px;padding-right:16px}
}

/* --- Login Page --- */
.form-input-pill{width:100%;height:44px;background:var(--canvas);border:1px solid rgba(0,0,0,0.08);border-radius:var(--radius-pill);padding:0 20px;font-size:17px;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;font-family:var(--font-text);letter-spacing:-0.374px}
.form-input-pill:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,0.1)}
.form-input-pill::placeholder{color:var(--ink-muted);font-size:14px}

.search-pill{width:100%;height:44px;background:var(--canvas);border:1px solid rgba(0,0,0,0.08);border-radius:var(--radius-pill);padding:0 20px 0 44px;font-size:17px;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;font-family:var(--font-text);letter-spacing:-0.374px;box-sizing:border-box}
.search-pill:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,0.1)}
.search-pill::placeholder{color:var(--ink-muted)}

.login-card{background:var(--canvas);border-radius:var(--radius-xl);padding:40px 36px;box-shadow:var(--shadow-product);width:100%}

.btn-login{background:var(--primary);color:#fff;font-family:var(--font-text);font-size:18px;font-weight:400;border:none;border-radius:var(--radius-pill);padding:14px 28px;cursor:pointer;transition:all .2s cubic-bezier(.25,.1,.25,1);width:100%;text-align:center;line-height:1}
.btn-login:hover{background:#0055aa;box-shadow:0 4px 16px rgba(0,102,204,0.35)}
.btn-login:active{transform:scale(.96)}

.login-error{background:rgba(224,64,64,0.06);color:#d04040;font-size:14px;font-weight:500;text-align:center;padding:10px 16px;border-radius:var(--radius-md);margin-bottom:20px;border:1px solid rgba(224,64,64,0.15)}

.login-tabs{display:flex;gap:0;margin-bottom:24px;background:var(--divider-soft);border-radius:var(--radius-pill);padding:3px}
.login-tab{flex:1;background:transparent;color:var(--ink-muted-48);font-family:var(--font-text);font-size:14px;font-weight:400;border:none;border-radius:var(--radius-pill);padding:8px 16px;cursor:pointer;transition:all .2s;text-align:center}
.login-tab.active{background:var(--canvas);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,0.08);font-weight:500}

.btn-secondary-pill{background:transparent;color:var(--primary);font-family:var(--font-text);font-size:17px;font-weight:400;border:1px solid var(--primary);border-radius:var(--radius-pill);padding:11px 22px;cursor:pointer;transition:all .2s cubic-bezier(.25,.1,.25,1);line-height:1}
.btn-secondary-pill:hover{background:rgba(0,102,204,0.04)}
.btn-secondary-pill:active{transform:scale(.96)}
.btn-secondary-pill:disabled{opacity:0.4;cursor:not-allowed}

.login-hint{font-size:12px;color:var(--ink-muted);text-align:center;line-height:1.5}

/* --- Setup Page --- */
.setup-card{background:var(--canvas);border-radius:var(--radius-xl);padding:48px 40px;box-shadow:var(--shadow-product);width:100%;max-width:440px}
.setup-title{font-family:var(--font-display);font-size:24px;font-weight:700;text-align:center;margin-bottom:8px;letter-spacing:-0.02em}
.setup-subtitle{font-size:14px;color:var(--ink-muted);text-align:center;margin-bottom:32px}
.setup-form{display:flex;flex-direction:column;gap:24px}
.setup-identity-group{display:flex;gap:10px}
.setup-identity-option{flex:1;padding:14px 10px;border:2px solid var(--hairline);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all .2s;background:var(--canvas);font-family:var(--font-text);font-size:14px;font-weight:500;color:var(--ink)}
.setup-identity-option:hover{border-color:var(--primary);background:rgba(0,102,204,0.02)}
.setup-identity-option.selected{border-color:var(--primary);background:rgba(0,102,204,0.06);color:var(--primary);font-weight:600}
.setup-select{width:100%;height:44px;background:var(--canvas);border:1.5px solid var(--hairline);border-radius:var(--radius-pill);padding:0 20px;font-size:16px;color:var(--ink);outline:none;font-family:var(--font-text);appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%237a7a7a'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;cursor:pointer;transition:border-color .2s}
.setup-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,102,204,0.1)}

.pwd-wrap{position:relative;display:flex;align-items:center}
.pwd-input{padding-right:48px}
.pwd-eye{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:none;background:transparent;cursor:pointer;font-size:18px;color:var(--ink-muted);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:color .15s,background .15s;line-height:1}
.pwd-eye:hover{color:var(--ink);background:rgba(0,0,0,0.04)}

/* --- Nav User Dropdown --- */
.nav-user-wrap{position:relative}
.nav-user-trigger{cursor:pointer;display:flex;align-items:center;gap:6px}
.nav-user-arrow{font-size:8px;transition:transform .2s;opacity:0.5}
.nav-user-dropdown{position:absolute;top:100%;right:0;margin-top:8px;min-width:140px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);box-shadow:0 8px 24px rgba(0,0,0,0.12);overflow:hidden;z-index:1100;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .2s,visibility .2s,transform .2s}
.nav-user-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}
.nav-user-dropdown-item{display:block;padding:10px 20px;font-size:14px;color:var(--ink);text-decoration:none;transition:background .15s;border-bottom:1px solid var(--divider)}
.nav-user-dropdown-item:last-child{border-bottom:none}
.nav-user-dropdown-item:hover{background:var(--parchment);color:var(--ink)}
.nav-user-role{display:block;padding:10px 20px;font-size:12px;color:var(--ink-muted);border-bottom:1px solid var(--divider)}

/* --- Membership Badge & Dropdown --- */
.membership-badge-wrap{position:relative}
.membership-badge{display:flex;align-items:center;gap:6px;padding:4px 14px;border:1px solid rgba(255,255,255,0.2);border-radius:var(--radius-pill);background:rgba(255,255,255,0.04);color:rgba(255,255,255,0.75);font-size:14px;cursor:pointer;transition:border-color .2s,color .2s,background .2s;line-height:1;font-family:inherit}
.membership-badge:hover{border-color:rgba(255,255,255,0.4);color:#fff;background:rgba(255,255,255,0.08)}
.membership-badge-icon{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.membership-badge-icon.lvl-free{background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.5);font-size:10px}
.membership-badge-icon.lvl-l1{background:linear-gradient(135deg,#5c3d2e,#7a5038);color:#d4b896;box-shadow:0 0 6px rgba(120,80,55,0.25)}
.membership-badge-icon.lvl-l2{background:linear-gradient(135deg,#6a6a7a,#9a9aae);color:#e8e8f0;box-shadow:0 0 6px rgba(140,140,170,0.3)}
.membership-badge-icon.lvl-l3{background:linear-gradient(135deg,#c8960c,#e5b81e);color:#fff8d0;box-shadow:0 0 10px rgba(255,185,0,0.4)}

/* Tier-specific badge border tints */
.membership-badge.lvl-badge-l1{border-color:rgba(140,100,70,0.3)}
.membership-badge.lvl-badge-l1:hover{border-color:rgba(140,100,70,0.5);background:rgba(140,100,70,0.06)}
.membership-badge.lvl-badge-l2{border-color:rgba(160,160,190,0.35)}
.membership-badge.lvl-badge-l2:hover{border-color:rgba(160,160,190,0.55);background:rgba(160,160,190,0.08)}
.membership-badge.lvl-badge-l3{border-color:rgba(255,185,0,0.4)}
.membership-badge.lvl-badge-l3:hover{border-color:rgba(255,185,0,0.6);background:rgba(255,185,0,0.1)}
.membership-badge-level{font-weight:500}
.membership-badge-arrow{font-size:8px;opacity:0.5;transition:transform .2s}
.membership-dropdown{position:absolute;top:100%;right:0;margin-top:8px;min-width:260px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);box-shadow:0 8px 24px rgba(0,0,0,0.12);overflow:hidden;z-index:1100;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .2s,visibility .2s,transform .2s}
.membership-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}
.membership-dropdown-header{padding:14px 20px 10px;border-bottom:1px solid var(--divider)}
.membership-dropdown-title{font-size:15px;font-weight:600;color:var(--ink)}
.membership-dropdown-sub{display:block;font-size:12px;color:var(--ink-muted);margin-top:2px}
.membership-dropdown-ops{padding:8px 0}
.membership-op-row{display:flex;align-items:center;padding:10px 20px;gap:12px}
.membership-op-row+.membership-op-row{border-top:1px solid var(--divider)}
.membership-op-info{flex:1;min-width:0}
.membership-op-label{font-size:14px;font-weight:500;color:var(--ink)}
.membership-op-cost{font-size:11px;color:var(--ink-muted)}
.membership-op-usage{text-align:right;flex-shrink:0}
.membership-op-usage-val{font-size:14px;font-weight:600;color:var(--ink)}
.membership-op-usage-limit{font-size:11px;color:var(--ink-muted)}
.membership-op-loading{padding:14px 20px;font-size:13px;color:var(--ink-muted)}

/* --- Permission Modal --- */
.perm-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.45);z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.perm-modal-overlay.show{opacity:1;visibility:visible}
.perm-modal{background:var(--canvas);border-radius:var(--radius-lg);max-width:400px;width:90%;padding:32px 28px 24px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,0.2)}
.perm-modal-icon{font-size:40px;margin-bottom:12px}
.perm-modal-title{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px}
.perm-modal-body{font-size:14px;color:var(--ink-muted);line-height:1.6;margin-bottom:8px}
.perm-modal-points{font-size:13px;color:var(--primary);font-weight:600;margin-bottom:24px}
.perm-modal-actions{display:flex;gap:10px;justify-content:center}
.perm-modal-actions .btn{font-size:14px;padding:10px 24px}

/* --- Admin Panel --- */
.admin-tab{padding:12px 24px;font-size:14px;font-weight:500;font-family:inherit;border:none;background:transparent;color:var(--ink-muted-48);cursor:pointer;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.admin-tab:hover{color:var(--ink)}
.admin-tab.active{color:var(--ink);border-bottom-color:var(--ink)}
.admin-tab-panel{background:var(--parchment);min-height:calc(100vh - 200px)}

.admin-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);padding:24px 28px}
.admin-card-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:16px}

.admin-form-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));gap:16px}
.admin-form-row{display:flex;flex-direction:column;gap:4px}
.admin-form-label{font-size:12px;font-weight:600;color:var(--ink-muted-48);text-transform:uppercase;letter-spacing:0.04em}

.admin-table-wrap{overflow-x:auto;border:1px solid var(--hairline);border-radius:var(--radius-sm)}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}
.admin-table th{background:var(--parchment);font-weight:600;color:var(--ink-muted);font-size:11px;text-transform:uppercase;letter-spacing:0.05em;padding:10px 12px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--hairline)}
.admin-table td{padding:10px 12px;border-bottom:1px solid var(--hairline);color:var(--ink)}
.admin-table tr:last-child td{border-bottom:none}
.admin-table tr:hover td{background:rgba(0,102,204,0.03)}
.admin-table td code{font-size:12px;background:var(--parchment);padding:2px 6px;border-radius:3px;font-family:"SF Mono",Menlo,monospace}

.admin-membership-badge{display:inline-block;padding:2px 8px;border-radius:var(--radius-pill);font-size:11px;font-weight:600;letter-spacing:0.03em}
.admin-membership-badge.badge-free{background:rgba(0,0,0,0.05);color:var(--ink-muted)}
.admin-membership-badge.badge-l1{background:rgba(120,80,55,0.1);color:#7a5038}
.admin-membership-badge.badge-l2{background:rgba(130,130,160,0.12);color:#6a6a7a}
.admin-membership-badge.badge-l3{background:rgba(200,150,12,0.12);color:#b8860c}

.admin-stat-cards{display:grid;grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));gap:16px}
.admin-stat-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);padding:20px 24px;text-align:center}
.admin-stat-value{font-size:32px;font-weight:700;color:var(--ink);line-height:1.2}
.admin-stat-label{font-size:12px;color:var(--ink-muted-48);margin-top:4px}

.admin-chart-range{padding:4px 12px;font-size:11px;font-family:inherit;font-weight:500;border:1px solid var(--hairline);border-radius:var(--radius-pill);background:var(--canvas);color:var(--ink-muted);cursor:pointer;transition:all .15s}
.admin-chart-range:hover{color:var(--ink);border-color:var(--ink-muted)}
.admin-chart-range.active{background:var(--ink);color:#fff;border-color:var(--ink)}

.admin-edit-btn{font-family:inherit}

/* --- Question search: staged filters (2026-08) --- */
.chip-cnt{font-size:11px;color:var(--ink-muted-48);font-weight:500;margin-left:4px;padding:1px 6px;border-radius:8px;background:rgba(0,0,0,0.05)}
.chip.active .chip-cnt{color:var(--primary)}
.search-tabs{display:flex;gap:4px;margin:14px 0 10px;border-bottom:1px solid var(--hairline)}
.search-tab{padding:8px 18px;font-size:13px;font-weight:500;color:var(--ink-muted);background:transparent;border:none;border-bottom:2px solid transparent;cursor:pointer;font-family:inherit}
.search-tab:hover{color:var(--ink)}
.search-tab.active{color:var(--primary);border-bottom-color:var(--primary)}
.chapter-version-header{font-size:12px;font-weight:600;color:var(--ink-muted);padding:12px 4px 4px;border-top:1px solid var(--hairline);margin-top:6px}
.chapter-version-header:first-child{border-top:none;margin-top:0}
.tree-count{margin-left:auto;font-size:11px;color:var(--ink-muted-48);padding:0 6px;flex-shrink:0}
.tree-node .tree-count{color:var(--ink-muted-48)}
.expand-toggle{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-muted);cursor:pointer;user-select:none}
.expand-toggle input{accent-color:var(--primary)}

/* --- Admin: chapter cross-version mapping (2026-08) --- */
.cm-tree{font-size:13px;line-height:1.5}
.cm-node{display:flex;align-items:center;gap:4px;padding:3px 6px;border-radius:4px;cursor:pointer;color:var(--ink)}
.cm-node:hover{background:var(--parchment)}
.cm-node.sel{background:rgba(0,102,204,0.10);color:var(--primary);font-weight:600}
.cm-arrow{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center;font-size:9px;color:var(--ink-muted-48);flex-shrink:0;cursor:pointer;transition:transform .15s}
.cm-arrow.open{transform:rotate(90deg)}
.cm-arrow.leaf{color:transparent}
.cm-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cm-mapped{margin-left:auto;font-size:10px;color:var(--primary);background:rgba(0,102,204,0.08);border-radius:8px;padding:1px 7px;white-space:nowrap;flex-shrink:0}
.cm-kids{margin-left:0}
.cm-kids.collapsed{display:none}
.cm-group{margin-bottom:10px;padding:10px 14px;border:1px solid var(--hairline);border-radius:var(--radius-sm)}
.cm-group-name{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.cm-group-members{display:flex;flex-wrap:wrap;gap:6px}
.cm-member-chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink);background:rgba(0,0,0,0.04);padding:4px 8px;border-radius:var(--radius-pill)}
.cm-unlink{width:16px;height:16px;border:none;background:transparent;color:var(--ink-muted-48);cursor:pointer;font-size:13px;line-height:1;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;padding:0}
.cm-unlink:hover{color:#e04040;background:rgba(224,64,64,0.1)}