:root{--bg: #f4f6fb;--card: #ffffff;--primary: #4f46e5;--primary-dark: #4338ca;--accent: #06b6d4;--en: #4f46e5;--cn: #e11d48;--danger: #dc2626;--ok: #16a34a;--low: #dc2626;--text: #1f2937;--muted: #6b7280;--border: #e5e7eb;--shell-max: 1180px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:var(--shell-max);margin:0 auto;padding:24px clamp(16px,4vw,40px) 48px}header{text-align:center;padding:12px 0 4px}header h1{margin:0;font-size:1.5rem}.subtitle{margin:4px 0 0;color:var(--muted);font-size:.9rem}.card{background:var(--card);border-radius:12px;padding:16px;margin:12px 0;box-shadow:0 1px 3px #0000000f}.card h2{margin:0 0 12px;font-size:1.05rem}textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px;font-size:1rem;resize:vertical;font-family:inherit}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row.column{flex-direction:column;align-items:stretch;margin-top:12px}.row.wrap{flex-wrap:wrap}.btn{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:8px;padding:10px 16px;font-size:1rem;cursor:pointer;min-height:44px}.btn:hover{background:#f9fafb}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-dark)}.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn:disabled{opacity:.5;cursor:not-allowed}audio{width:100%}label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted)}select,input[type=range]{font-size:1rem}.scores{display:flex;flex-wrap:wrap;gap:10px}.score-chip{flex:1 1 90px;border-radius:10px;padding:10px;text-align:center;background:#eef2ff}.score-chip.low{background:#fee2e2}.score-label{display:block;font-size:.8rem;color:var(--muted)}.score-value{display:block;font-size:1.4rem;font-weight:700}.score-chip.low .score-value{color:var(--low)}.recognized{margin:14px 0;font-size:.95rem}.words{display:flex;flex-wrap:wrap;gap:8px}.word{border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:#f0fdf4}.word.low{background:#fef2f2;border-color:#fecaca}.word-head{display:flex;align-items:baseline;gap:6px}.word-text{font-weight:600}.word-score{font-size:.85rem;color:var(--muted)}.word.low .word-score{color:var(--low)}.word-status{font-size:.72rem;background:var(--danger);color:#fff;border-radius:4px;padding:1px 5px}.phonemes{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.phoneme{font-size:.72rem;background:#e5e7eb;border-radius:4px;padding:1px 5px}.phoneme.low{background:#fecaca;color:var(--low)}.markdown{margin-top:14px;line-height:1.6;overflow-x:auto}.markdown table{border-collapse:collapse;width:100%}.markdown th,.markdown td{border:1px solid var(--border);padding:6px 8px;text-align:left}.markdown code{background:#f3f4f6;padding:1px 4px;border-radius:4px}.error{color:var(--danger);font-size:.9rem}.info{text-align:center;color:var(--muted)}footer{text-align:center;color:var(--muted);padding:20px 0}.header-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;text-align:left}.lang-switcher{border:1px solid var(--border);border-radius:8px;padding:6px 8px;background:#fff;min-height:36px}.main-nav{display:flex;align-items:center;gap:14px;margin-top:12px;padding:8px 0;border-top:1px solid var(--border);flex-wrap:wrap}.main-nav a{color:var(--primary);text-decoration:none;font-size:.95rem}.main-nav a:hover{text-decoration:underline}.nav-spacer{flex:1}.nav-user{color:var(--muted);font-size:.9rem}.btn.link{border:none;background:none;color:var(--primary);padding:4px 6px;min-height:auto}.btn.link:hover{background:none;text-decoration:underline}.auth-card{max-width:380px;margin:24px auto}.auth-form{display:flex;flex-direction:column;gap:14px}.auth-form input{border:1px solid var(--border);border-radius:8px;padding:10px;font-size:1rem}.auth-switch{text-align:center;margin-top:12px;font-size:.9rem}.auth-switch a{color:var(--primary)}.history-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.history-item{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--border);border-radius:8px;padding:10px 12px}.history-meta{display:flex;flex-direction:column;gap:2px;overflow:hidden}.history-date{font-size:.8rem;color:var(--muted)}.history-ref{font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.history-badge{font-size:.72rem;color:var(--muted)}.history-badge.ok{color:var(--ok)}.app-shell{min-height:100vh;display:flex;flex-direction:column}.navbar{position:sticky;top:0;z-index:20;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.navbar-inner{max-width:var(--shell-max);margin:0 auto;display:flex;align-items:center;gap:16px;padding:10px clamp(16px,4vw,40px)}.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-weight:800;font-size:1.1rem}.brand-mark{color:var(--primary);font-size:1rem}.brand-name{background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.navbar-links{display:flex;gap:14px;flex:1;flex-wrap:wrap}.navbar-links a{color:var(--muted);text-decoration:none;font-size:.92rem;padding:4px 2px}.navbar-links a:hover{color:var(--text)}.navbar-links a.active{color:var(--primary);font-weight:600}.navbar-right{display:flex;align-items:center;gap:10px}.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0;border:1px solid var(--border);border-radius:10px;background:#fff;cursor:pointer}.nav-toggle span{display:block;width:20px;height:2px;margin:0 auto;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-toggle.open span:nth-child(2){opacity:0}.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.navbar-mobile-actions{display:none}.btn.sm{padding:6px 12px;min-height:36px;font-size:.9rem}.btn.lg{padding:14px 26px;font-size:1.05rem;min-height:52px}.btn.ghost{background:transparent;border:1px solid var(--border)}.btn.primary.sm{color:#fff}.landing{text-align:center}.hero{padding:48px 8px 32px;background:radial-gradient(1200px 400px at 50% -120px,rgba(79,70,229,.16),transparent);border-radius:18px}.hero-badge{display:inline-block;font-size:.78rem;color:var(--primary);background:#4f46e51a;border-radius:999px;padding:4px 12px;margin-bottom:16px}.hero-title{font-size:clamp(2rem,6vw,2.6rem);margin:0;font-weight:900;letter-spacing:-.02em;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-tagline{font-size:clamp(1.1rem,3.5vw,1.4rem);font-weight:700;margin:8px 0 4px}.hero-desc{color:var(--muted);max-width:460px;margin:8px auto 24px;line-height:1.5}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.hero-motto{margin-top:26px;color:var(--muted);font-style:italic}.ability-band{margin-top:36px}.ability-band h2,.goal-band h2{font-size:1.1rem}.ability-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.ability-chip{background:#eef2ff;color:var(--primary-dark);border-radius:999px;padding:6px 14px;font-size:.88rem;font-weight:600}.goal-band{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}.goal-card{display:block;text-decoration:none;border:1px solid var(--border);border-radius:14px;padding:22px;background:var(--card);color:var(--text);text-align:left;cursor:pointer;transition:transform .12s,box-shadow .12s}.goal-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00000014}.goal-card.en{border-top:4px solid var(--en)}.goal-card.cn{border-top:4px solid var(--cn)}.goal-card h3{margin:0 0 6px}.goal-card p{margin:0;color:var(--muted);font-size:.9rem}.goal-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.goal-card.lg{padding:28px;text-align:center}.goal-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:12px;font-weight:800;color:#fff;margin-bottom:10px}.goal-card.en .goal-icon{background:var(--en)}.goal-card.cn .goal-icon{background:var(--cn)}.goal-link{display:inline-block;margin-top:10px;color:var(--primary);font-weight:600;font-size:.9rem}.page{padding-top:8px}.page-title{font-size:1.6rem;margin:8px 0 2px}.page-subtitle{color:var(--muted);margin:0 0 18px}.product-head{text-align:center;margin-bottom:12px}.flow{display:inline-flex;align-items:center;gap:10px;margin-top:8px}.flow-step{background:#eef2ff;color:var(--primary-dark);border-radius:8px;padding:6px 14px;font-weight:700}.cn-theme .flow-step{background:#ffe4e6;color:var(--cn)}.flow-arrow{color:var(--muted)}.level-preview{display:flex;align-items:center;justify-content:center;gap:16px}.level-box{flex:1;text-align:center;border:1px solid var(--border);border-radius:12px;padding:16px}.level-box.accent{border-color:var(--primary);background:#eef2ff}.cn-theme .level-box.accent{border-color:var(--cn);background:#ffe4e6}.level-caption{display:block;font-size:.8rem;color:var(--muted)}.level-value{display:block;font-size:1.5rem;font-weight:800;margin-top:4px}.level-value.sm{font-size:1.05rem}.level-arrow{font-size:1.4rem;color:var(--muted)}.exam-grid,.training-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.exam-card{border:1px solid var(--border);border-radius:10px;padding:16px;background:#fff;font-weight:600;cursor:pointer;text-align:center;position:relative}.exam-card:hover{border-color:var(--primary)}.exam-card.disabled{color:var(--muted);cursor:default;display:flex;align-items:center;justify-content:center;gap:8px}.exam-card.disabled:hover{border-color:var(--border)}.soon-badge{display:inline-block;margin-top:10px;font-size:.74rem;background:#fef3c7;color:#92400e;border-radius:999px;padding:3px 10px}.soon-tag{font-size:.7rem;background:#f3f4f6;color:var(--muted);border-radius:6px;padding:2px 7px}.note-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:4px}.stat-card{background:var(--card);border-radius:12px;padding:16px;box-shadow:0 1px 3px #0000000f;border-top:3px solid var(--border)}.stat-card.en-theme{border-top-color:var(--en)}.stat-card.cn-theme{border-top-color:var(--cn)}.stat-label{font-size:.8rem;color:var(--muted)}.stat-value{display:block;font-size:1.8rem;font-weight:800;margin:4px 0}.stat-value.muted{font-size:1rem;color:var(--muted)}.stat-sub{font-size:.78rem;color:var(--muted)}.week-row{display:flex;justify-content:space-between;font-size:.95rem;margin-bottom:8px}.week-bar{height:10px;background:#eef2ff;border-radius:999px;overflow:hidden}.week-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:999px}.card-head-row{display:flex;align-items:center;justify-content:space-between}.empty-state{display:flex;flex-direction:column;align-items:center;gap:12px;padding:12px 0}.score-pill{font-weight:800;border-radius:8px;padding:6px 12px;min-width:44px;text-align:center}.score-pill.ok{background:#dcfce7;color:var(--ok)}.score-pill.low{background:#fee2e2;color:var(--low)}.training-card{border:1px solid var(--border);border-radius:10px;padding:14px;display:flex;align-items:center;justify-content:space-between}.training-card.disabled{color:var(--muted)}.training-label{font-weight:600}.line-chart{width:100%;height:auto;margin-top:8px}.trend-pill{background:#eef2ff;color:var(--primary-dark);border-radius:999px;padding:4px 12px;font-weight:700;font-size:.9rem}.trend-sub{color:var(--muted);font-size:.82rem;margin:8px 0 0}.waitlist-card{border-top:3px solid var(--cn)}.waitlist-form{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.waitlist-input{flex:1 1 220px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:1rem;min-height:44px}.waitlist-done{margin:12px 0 0;color:var(--ok);font-weight:600}.waitlist-error{flex-basis:100%;color:var(--danger);font-size:.88rem;margin:0}.word-actions{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}.word-action{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:999px;padding:4px 12px;font-size:.8rem;cursor:pointer;min-height:32px;line-height:1.4}.word-action:hover{border-color:var(--primary);color:var(--primary)}.word-action.active{border-color:var(--primary);background:#eef2ff;color:var(--primary-dark)}.word-action.recording{border-color:var(--danger);background:#fee2e2;color:var(--danger)}.word-action:disabled{opacity:.5;cursor:not-allowed}.word-practice{margin-top:8px;font-size:.85rem}.practice-phonemes-wrap{margin-top:8px}.practice-phonemes-title{margin:0 0 4px;color:var(--muted);font-size:.8rem}.phoneme-delta{font-style:normal;color:var(--muted)}.phoneme-delta.up{color:var(--ok)}.phoneme-delta.down{color:var(--low)}.phoneme-delta.flat{color:var(--muted)}.practice-score{font-weight:700}.practice-score.ok{color:var(--ok)}.practice-score.low{color:var(--low)}.word-meaning{margin-top:8px;padding:10px;background:#f9fafb;border-radius:8px;font-size:.85rem}.meaning-head{display:flex;gap:10px;align-items:center;color:var(--muted);margin-bottom:6px}.meaning-phonetic{font-style:italic}.meaning-pos{background:#e5e7eb;border-radius:4px;padding:1px 6px;font-size:.75rem}.meaning-text{margin:0 0 6px;color:var(--text)}.meaning-examples{margin:0;padding-left:16px;display:flex;flex-direction:column;gap:4px}.meaning-examples .ex-en{display:block}.meaning-examples .ex-zh{display:block;color:var(--muted)}.picker{margin-bottom:12px}.picker-level-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:12px}.picker-level-label{font-size:.82rem;font-weight:600;color:var(--muted)}.level-chips{display:flex;flex-wrap:wrap;gap:6px}.level-chip{border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:999px;padding:4px 14px;font-size:.82rem;font-weight:600;cursor:pointer;transition:all .15s ease}.level-chip:hover{border-color:var(--primary);color:var(--primary)}.level-chip.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px #4f46e540}.picker-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 12px}.picker-field{display:flex;flex-direction:column;gap:4px}.picker-field>span{font-size:.76rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.picker-field select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text);font-size:.9rem}.picker-field select:disabled{background:#f8fafc;color:var(--muted);cursor:not-allowed}.picker-field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}@media (max-width: 560px){.picker-grid{grid-template-columns:1fr}}.picker-fallback{display:flex;flex-direction:column;gap:8px}.picker-fallback-hint{margin:0;padding:8px 12px;background:#eef2ff;border:1px solid #c7d2fe;border-radius:8px;color:var(--primary-dark);font-size:.85rem}.picker-fallback-actions{justify-content:flex-end}.picker-current{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:10px;padding:10px 12px;background:#f8fafc;border:1px solid var(--border);border-radius:10px}.picker-text{font-weight:600;color:var(--text)}.kg-picker .row.wrap select{min-width:150px;flex:1 1 150px}.picker-prompts{margin-top:10px;display:flex;flex-direction:column;gap:8px}.picker-prompt-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:8px 10px;background:#f8fafc;border:1px solid var(--border);border-radius:10px;transition:border-color .15s ease,background .15s ease}.picker-prompt-row:hover{border-color:#c7d2fe;background:#fbfcff}.picker-prompt-text{flex:1 1 200px;color:var(--text)}.picker-linked-hint{margin-top:2px}.recommend-list{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.recommend-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:#f8fafc;border:1px solid var(--border);border-radius:10px}.recommend-meta{display:flex;flex-direction:column;gap:2px;min-width:0}.recommend-name{font-weight:600;color:var(--text)}.recommend-path{font-size:.85em;color:var(--muted)}.admin-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px;border-bottom:1px solid var(--border)}.admin-tabs a{padding:8px 14px;border-radius:8px 8px 0 0;color:var(--muted);text-decoration:none;font-weight:600;font-size:.92rem;border-bottom:2px solid transparent}.admin-tabs a:hover{color:var(--text);background:#f8fafc}.admin-tabs a.active{color:var(--primary-dark);border-bottom-color:var(--primary)}.section-title{margin:18px 0 10px;font-size:1.1rem}.nav-admin{font-weight:700;color:var(--primary-dark)!important}.admin-search{flex:1 1 200px;min-width:160px}.admin-table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--border);border-radius:12px}.admin-table{width:100%;border-collapse:collapse;font-size:.9rem}.admin-table th,.admin-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:middle}.admin-table th{background:#f8fafc;font-weight:700;color:var(--muted);white-space:nowrap}.admin-table tr:last-child td{border-bottom:none}.admin-table .cell-text{max-width:360px;min-width:200px}.admin-table .cell-tags{display:flex;flex-wrap:wrap;gap:4px}.admin-table .cell-actions{white-space:nowrap;text-align:right}.row-inactive{opacity:.55}.cefr-pill{display:inline-block;background:#eef2ff;color:var(--primary-dark);border-radius:6px;padding:2px 8px;font-weight:700;font-size:.78rem}.role-pill{display:inline-block;background:#f1f5f9;color:var(--muted);border-radius:999px;padding:2px 10px;font-size:.78rem;font-weight:600}.role-pill.admin{background:#ecfeff;color:#0e7490}.status-ok{color:var(--ok);font-weight:600}.status-off{color:var(--danger);font-weight:600}.danger-link{color:var(--danger)!important}.tag-chip{display:inline-flex;align-items:center;gap:4px;background:#f1f5f9;color:var(--text);border:1px solid var(--border);border-radius:999px;padding:4px 10px;font-size:.82rem;cursor:default}.tag-chip.mini{padding:1px 8px;font-size:.72rem}.tag-chip.large{padding:6px 12px;font-size:.9rem}button.tag-chip{cursor:pointer}button.tag-chip.active{background:var(--primary);border-color:var(--primary);color:#fff}.tag-list{display:flex;flex-wrap:wrap;gap:8px}.tag-x{background:none;border:none;color:var(--muted);cursor:pointer;font-size:.78rem;padding:0 2px;line-height:1}.tag-x:hover{color:var(--danger)}.chip-select{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 8px}.field-label{font-weight:600;font-size:.88rem;margin:6px 0 2px;color:var(--muted)}.dist-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}.dist-row{display:grid;grid-template-columns:54px 1fr 36px;align-items:center;gap:8px}.dist-label{font-size:.82rem;font-weight:600;color:var(--muted)}.dist-track{height:10px;background:#eef2ff;border-radius:999px;overflow:hidden}.dist-fill{height:100%;border-radius:999px}.dist-value{font-size:.82rem;font-weight:700;text-align:right}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.modal{background:var(--card);border-radius:14px;padding:20px;width:100%;max-width:460px;max-height:88vh;overflow-y:auto;box-shadow:0 12px 40px #0000002e}.modal.wide{max-width:640px}.modal h2{margin-top:0}.modal label{display:block;font-size:.9rem;font-weight:600;margin-top:10px}.modal label input,.modal label select,.modal label textarea{margin-top:4px}.draft-list{display:flex;flex-direction:column;gap:8px;margin:12px 0;max-height:320px;overflow-y:auto}.draft-item{display:flex;align-items:flex-start;gap:8px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-weight:400!important}.draft-tags{display:inline-flex;flex-wrap:wrap;gap:4px;margin-left:8px}.assess-layout{display:grid;grid-template-columns:minmax(320px,.85fr) minmax(0,1.15fr);gap:24px;align-items:start}.assess-input{position:sticky;top:76px}.assess-input>.card:first-child{margin-top:0}.assess-output{min-width:0}.assess-output>*:first-child{margin-top:0}.assess-card{border:1px solid var(--border)}.card-step-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border)}.card-step-head h2{margin:0;font-size:1.05rem}.step-badge{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:var(--primary);color:#fff;font-size:.85rem;font-weight:700;box-shadow:0 2px 6px #4f46e54d}.assess-card textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:.95rem;resize:vertical}.assess-card textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}.assess-placeholder{display:flex;align-items:center;justify-content:center;min-height:220px;border:1px dashed var(--border);box-shadow:none;background:#fbfcff}.assess-placeholder .info{max-width:280px;text-align:center;margin:0}.landing{max-width:920px;margin:0 auto}@media (max-width: 1024px){.navbar-inner{max-width:100%}.stat-grid{grid-template-columns:repeat(2,1fr)}.assess-layout{grid-template-columns:1fr}.assess-input{position:static}}@media (max-width: 820px){.nav-toggle{display:flex}.navbar-inner{flex-wrap:wrap;row-gap:0}.navbar-right{margin-left:auto}.navbar-right .nav-credits,.navbar-right .nav-user,.navbar-right>.btn.link,.navbar-right>.btn.primary{display:none}.navbar-links{display:none;flex-direction:column;align-items:stretch;gap:4px;flex-basis:100%;padding:10px 0;border-top:1px solid var(--border);margin-top:8px}.navbar-links.open{display:flex}.navbar-links a{padding:12px 8px;border-radius:8px;font-size:1rem}.navbar-links a:hover,.navbar-links a.active{background:#f1f5f9}.navbar-mobile-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:10px;margin-top:6px;border-top:1px solid var(--border)}}@media (max-width: 640px){.stat-grid,.goal-band,.goal-grid,.exam-grid,.training-grid,.grid-2{grid-template-columns:1fr}.admin-tabs{overflow-x:auto;flex-wrap:nowrap}.admin-tabs a{white-space:nowrap}.app{padding:12px}.hero{padding:32px 4px 24px}.admin-table .cell-actions{white-space:normal}}.nav-credits{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;background:#eef2ff;color:var(--primary-dark);font-weight:700;font-size:.85rem;text-decoration:none}.nav-credits:hover{background:#e0e7ff}.credits-icon{font-size:.8rem}.cost-hint{margin:0 0 10px;color:var(--muted);font-size:.85rem}.cost-badge{display:inline-block;margin-left:6px;padding:0 6px;border-radius:999px;background:#eef2ff;color:var(--primary-dark);font-size:.72rem;font-weight:700}.credits-receipt{font-weight:600;color:var(--primary-dark);background:#eef2ff;border:1px solid #c7d2fe}.muted{color:var(--muted)}.credits-balance-card{text-align:center}.credits-balance-label{display:block;color:var(--muted);font-size:.9rem}.credits-balance-value{display:block;font-size:2.4rem;font-weight:800;color:var(--primary-dark);margin:4px 0}.credits-unit{font-size:1.4rem}.topup-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-top:12px}.topup-pack{display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--card)}.topup-credits{font-size:1.2rem;font-weight:800;color:var(--primary-dark)}.topup-price{color:var(--muted);font-weight:600}.credit-input{width:90px;padding:6px 8px;border:1px solid var(--border);border-radius:8px}.credit-settings-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:14px}.credit-settings-grid .field{display:flex;flex-direction:column;gap:6px}.credit-settings-grid .field span{color:var(--muted);font-size:.85rem}.credit-settings-grid .field input{padding:8px 10px;border:1px solid var(--border);border-radius:8px}.conv-hero{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:linear-gradient(135deg,#eef2ff,#ecfeff);border:1px solid #e0e7ff}.conv-hero-main{flex:1 1 280px}.conv-hero-main h2{margin:0 0 6px}.conv-hero-main p{margin:0 0 12px;color:var(--muted);font-size:.9rem}.conv-hero-goal{flex:1 1 220px;max-width:320px}.conv-hero-goal .goal-label{display:flex;justify-content:space-between;font-size:.85rem;color:var(--muted);margin-bottom:6px}.conv-quick-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.conv-quick-chip{border:1px solid var(--border);background:#fff;border-radius:999px;padding:6px 14px;font-size:.88rem;cursor:pointer}.conv-quick-chip:hover{border-color:var(--primary);color:var(--primary)}.conv-retest-banner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#fffbeb;border:1px solid #fde68a}.conv-retest-banner .grow{flex:1 1 200px}.conv-category{margin-top:20px}.conv-category h2{margin:0 0 10px;font-size:1.05rem}.conv-scenario-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.conv-scenario-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;cursor:pointer;font:inherit;color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}.conv-scenario-card:hover{border-color:var(--primary);box-shadow:0 4px 12px #4f46e51f;transform:translateY(-2px)}.conv-scenario-card:disabled{opacity:.6;cursor:wait}.conv-scenario-icon{font-size:1.6rem}.conv-scenario-title{font-weight:700}.conv-scenario-desc{color:var(--muted);font-size:.85rem}.conv-page{max-width:1080px;margin:0 auto}.conv-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.conv-header h1{margin:0;font-size:1.25rem}.conv-header .conv-topic{color:var(--muted);font-size:.88rem}.conv-header-actions{display:flex;gap:8px;align-items:center}.conv-tts-select{max-width:180px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:.88rem}.conv-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:18px;align-items:start}.conv-chat{display:flex;flex-direction:column;margin:0;padding:0;overflow:hidden}.conv-chat-window{flex:1;min-height:380px;max-height:56vh;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}.conv-bubble{max-width:82%;padding:10px 14px;border-radius:14px;line-height:1.5;font-size:.95rem;white-space:pre-wrap;word-break:break-word}.conv-bubble.user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}.conv-bubble.ai{align-self:flex-start;background:#f3f4f6;border-bottom-left-radius:4px}.conv-bubble.pending{align-self:flex-end;background:#eef2ff;color:var(--muted);font-style:italic}.admin-table tr.inactive td{opacity:.5}.admin-word-meanings{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-word{cursor:pointer;border-radius:3px;transition:background .12s}.conv-bubble.ai .conv-word:hover{background:#e0e7ff}.conv-bubble.user .conv-word:hover{background:#ffffff40}.conv-word.active{text-decoration:underline;text-underline-offset:3px}.conv-word-popup{display:block;margin-top:8px;padding:8px 10px;background:#fff;color:var(--text);border:1px solid var(--border);border-radius:10px;font-size:.85rem;font-style:normal;box-shadow:0 4px 12px #00000014}.conv-word-popup-head{display:flex;align-items:center;gap:8px}.conv-word-popup-speak,.conv-word-popup-close{background:none;border:none;cursor:pointer;font-size:.95rem;padding:0 2px;line-height:1}.conv-word-popup-close{margin-left:auto;font-size:1.15rem;color:var(--muted)}.conv-word-popup-body{display:block;margin-top:4px;color:var(--text)}.conv-bubble-actions{display:block;margin-top:6px}.conv-bubble-icons{display:inline-flex;align-items:center;gap:4px}.conv-icon-btn{background:none;border:none;padding:2px 4px;cursor:pointer;font-size:.95rem;line-height:1;border-radius:6px;opacity:.75}.conv-icon-btn:hover{opacity:1;background:#e0e7ff}.conv-icon-btn:disabled{opacity:.4;cursor:not-allowed}.conv-icon-btn.recording{opacity:1;background:#fee2e2;animation:conv-pulse 1.2s ease-in-out infinite}.conv-translate{display:block;margin-top:6px}.conv-translate-btn{background:none;border:none;padding:0;cursor:pointer;font-size:.78rem;color:var(--muted)}.conv-translate-btn:hover{color:var(--primary)}.conv-translate-result{display:block;margin-top:4px;padding:6px 10px;background:#fff;border:1px solid var(--border);border-radius:8px;font-size:.88rem;color:var(--text)}.conv-cursor{display:inline-block;width:8px;background:var(--muted);animation:conv-blink .9s steps(1) infinite}@keyframes conv-blink{50%{opacity:0}}.conv-help-offer{display:flex;align-items:center;gap:10px;margin:0 16px;padding:8px 12px;background:#fffbeb;border:1px solid #fde68a;border-radius:10px;font-size:.88rem}.conv-footer{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 16px;border-top:1px solid var(--border)}.conv-hold-btn{width:100%;max-width:360px;min-height:56px;border-radius:999px;border:none;background:var(--primary);color:#fff;font-size:1.05rem;font-weight:700;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:none;transition:background .15s,transform .1s}.conv-hold-btn:hover{background:var(--primary-dark)}.conv-hold-btn.recording{background:var(--danger);animation:conv-pulse 1.2s ease-in-out infinite}.conv-hold-btn:disabled{background:#c7d2fe;cursor:not-allowed}@keyframes conv-pulse{0%,to{box-shadow:0 0 #dc262666}50%{box-shadow:0 0 0 12px #dc262600}}.conv-suggestion{width:100%;max-width:360px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;padding:8px 12px;text-align:left}.conv-suggestion-label{display:block;color:var(--muted);font-size:.75rem}.conv-suggestion-text{margin:4px 0 6px;font-size:.95rem;line-height:1.5}.conv-cost-hint{color:var(--muted);font-size:.8rem}.conv-score-panel{margin:0}.conv-score-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.conv-score-chip{border:1px solid var(--border);border-radius:10px;padding:10px;text-align:center}.conv-score-label{display:block;color:var(--muted);font-size:.78rem;margin-bottom:4px}.conv-score-value{font-size:1.3rem;font-weight:800}.conv-score-value.low{color:var(--low)}.conv-score-value.mid{color:#d97706}.conv-score-value.ok{color:var(--ok)}.conv-score-trend{font-size:.78rem;color:var(--muted);margin-left:4px}.conv-weak-list{display:flex;flex-direction:column;gap:6px;margin-top:12px}.conv-weak-item{border:1px solid var(--border);border-radius:10px;padding:6px 10px}.conv-weak-chip{display:flex;align-items:center;gap:8px;width:100%;background:none;border:none;font:inherit;cursor:pointer;padding:4px 0}.conv-weak-chip .word{font-weight:700}.conv-weak-score{margin-left:auto;font-weight:700;color:var(--low)}.conv-word-actions{padding:6px 0 4px}.conv-word-buttons{display:flex;gap:8px;flex-wrap:wrap}.conv-word-meaning{margin-top:8px;font-size:.88rem;background:#f9fafb;border-radius:8px;padding:8px 10px}.conv-word-example{color:var(--muted);margin-top:4px}.conv-help-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#11182773;display:flex;align-items:center;justify-content:center;padding:16px;z-index:60}.conv-help-modal{background:var(--card);border-radius:14px;padding:20px;width:100%;max-width:520px;max-height:84vh;overflow-y:auto}.conv-help-modal h2{margin:0 0 6px}.conv-help-modal .hint{color:var(--muted);font-size:.85rem;margin:0 0 10px}.conv-help-input{width:100%;min-height:72px}.conv-help-results{display:flex;flex-direction:column;gap:12px;margin-top:14px}.conv-help-version{border:1px solid var(--border);border-radius:10px;padding:10px 12px}.conv-help-label{display:block;color:var(--muted);font-size:.78rem;margin-bottom:4px}.conv-help-sentence{font-size:1rem;line-height:1.5;margin-bottom:8px}.conv-report-overall{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.conv-report-hero{text-align:center;min-width:140px}.conv-report-hero-label{color:var(--muted);font-size:.85rem}.conv-report-hero-value{font-size:3rem;font-weight:800;color:var(--primary-dark);line-height:1.1}.conv-report-delta{font-size:.95rem;font-weight:700}.conv-report-delta.up{color:var(--ok)}.conv-report-delta.down{color:var(--low)}.conv-improvement{border:1px solid var(--border);border-radius:10px;padding:12px;margin-bottom:10px}.conv-improvement-original{color:var(--muted);font-size:.88rem;margin-bottom:8px}.conv-report-markdown{line-height:1.65;font-size:.95rem}.conv-report-markdown h1,.conv-report-markdown h2,.conv-report-markdown h3{font-size:1.02rem;margin:14px 0 6px}.conv-report-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}@media (max-width: 900px){.conv-layout{grid-template-columns:1fr}.conv-chat-window{min-height:300px;max-height:48vh}}