:root{color-scheme:light;--bg: #f5f7ff;--surface: #ffffff;--surface-muted: #eef2ff;--text: #1e1b4b;--text-secondary: #475569;--muted: #64748b;--accent: #4f46e5;--accent-hover: #4338ca;--accent-soft: #eef2ff;--accent-ring: rgba(79, 70, 229, .22);--border: #e0e7ff;--border-strong: #c7d2fe;--err: #dc2626;--err-bg: #fef2f2;--warn: #b45309;--warn-bg: #fffbeb;--success: #059669;--success-bg: #ecfdf5;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-full: 999px;--shadow-sm: 0 1px 3px rgba(79, 70, 229, .06);--shadow-md: 0 8px 28px rgba(79, 70, 229, .1);--space-page: clamp(24px, 5vw, 48px);--font-display: "Plus Jakarta Sans", "Noto Sans SC", system-ui, sans-serif;--font-body: "Noto Sans SC", "Plus Jakarta Sans", system-ui, sans-serif;--font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;--transition: .18s ease}*,*:before,*:after{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;font-family:var(--font-body);font-size:15px;line-height:1.6;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;transition:color var(--transition)}a:hover{color:var(--accent-hover)}code{font-family:var(--font-mono);font-size:.85em;background:var(--surface-muted);padding:2px 7px;border-radius:6px;color:var(--text-secondary)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.mono{font-family:var(--font-mono);font-size:.92em}.muted{color:var(--muted);font-size:14px}.err{color:var(--err)}.num{text-align:right;white-space:nowrap}.narrow{width:48px;text-align:center}.app-shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:40;background:#f5f7ffe6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.topbar__inner{max-width:880px;margin:0 auto;padding:16px var(--space-page);display:flex;align-items:center;justify-content:space-between;gap:16px}.topbar__brand{font-family:var(--font-display);font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--accent);text-decoration:none}.topbar__brand:hover{color:var(--accent-hover)}.topbar__actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.topbar__meta{font-size:13px;color:var(--muted)}.page{max-width:880px;margin:0 auto;padding:40px var(--space-page) 80px;animation:page-in .45s ease both}@keyframes page-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.hero{margin-bottom:36px}.hero h1{margin:0 0 10px;font-family:var(--font-display);font-size:clamp(28px,5vw,36px);font-weight:700;letter-spacing:-.03em;line-height:1.15}.hero .sub{margin:0;font-size:15px;color:var(--muted);max-width:36em}.hero .sub a{font-weight:600;text-decoration:none;color:var(--accent)}.hero .sub a:hover{text-decoration:underline;color:var(--accent-hover)}.stepper{display:flex;gap:0;margin-bottom:32px;padding:4px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.stepper__item{flex:1;display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 12px;border-radius:calc(var(--radius-lg) - 4px);font-size:14px;font-weight:500;color:var(--muted);transition:background var(--transition),color var(--transition)}.stepper__item--active{background:var(--accent);color:#fff}.stepper__item--done:not(.stepper__item--active){color:var(--text-secondary)}.stepper__num{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:var(--radius-full);font-size:12px;font-weight:700;background:var(--surface-muted);color:var(--text-secondary);flex-shrink:0}.stepper__item--active .stepper__num{background:#fff3;color:#fff}.stepper__item--done:not(.stepper__item--active) .stepper__num{background:var(--success-bg);color:var(--success)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 32px;margin-top:24px;box-shadow:var(--shadow-sm)}.card:first-of-type{margin-top:0}.card h2{margin:0 0 20px;font-family:var(--font-display);font-size:18px;font-weight:700;letter-spacing:-.02em}.card__lead{margin:-12px 0 20px;font-size:14px;color:var(--muted);line-height:1.65}.grid{display:grid;gap:16px;align-items:end}.grid.form{grid-template-columns:repeat(2,minmax(0,1fr))}@media(max-width:640px){.grid.form{grid-template-columns:1fr}.card{padding:22px 20px}.stepper{flex-direction:column}.stepper__item{justify-content:flex-start}}label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:500;color:var(--text-secondary)}label.full{grid-column:1 / -1}label.check{flex-direction:row;align-items:center;gap:10px;font-size:14px;color:var(--text)}input[type=text],input[type=password],input[type=number],input[type=tel],textarea,select{width:100%;padding:14px 16px;border-radius:var(--radius-md);border:1px solid var(--border);font:inherit;font-size:15px;color:var(--text);background:var(--surface);transition:border-color var(--transition),box-shadow var(--transition)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring)}textarea{resize:vertical;min-height:96px;line-height:1.55}button{font:inherit;font-size:15px;cursor:pointer;border-radius:var(--radius-md);border:none;padding:14px 24px;font-weight:600;transition:background var(--transition),color var(--transition),opacity var(--transition),transform .12s ease}button:active:not(:disabled){transform:scale(.98)}button.primary{background:var(--accent);color:#fff}button.primary:hover:not(:disabled){background:var(--accent-hover)}button.primary:disabled,button.ghost:disabled,button.outline:disabled{opacity:.45;cursor:not-allowed}button.ghost{background:var(--accent-soft);color:var(--text)}button.ghost:hover:not(:disabled){background:var(--border-strong);color:var(--accent-hover)}button.outline{background:transparent;color:var(--text);border:1px solid var(--border-strong);padding:13px 23px}button.outline:hover:not(:disabled){background:var(--surface-muted)}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.auth-tabs{display:flex;gap:8px;margin-bottom:24px;padding:4px;background:var(--surface-muted);border-radius:var(--radius-md)}.auth-tab{flex:1;padding:12px 16px;border-radius:calc(var(--radius-md) - 2px);border:none;background:transparent;font-weight:600;color:var(--muted);cursor:pointer}.auth-tab--active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.auth-status-bar{padding:20px 28px}.auth-status-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;font-size:14px}.hint{margin:16px 0 0;font-size:14px;color:var(--muted);line-height:1.65}.row-between{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.row-between h2{margin:0}.row-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:4px}.row-pick{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.path-row{margin-top:20px}.h3-inline{margin:0;font-size:16px;font-weight:600;letter-spacing:-.01em}.grade-actions{margin-top:20px}.grade-actions .primary{min-width:160px;padding:16px 32px;font-size:16px}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:16px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:12px 16px;border-bottom:1px solid var(--border);text-align:left}th{background:var(--surface-muted);font-weight:600;font-size:12px;text-transform:none;color:var(--muted);letter-spacing:.02em}tr:last-child td{border-bottom:none}tbody tr:hover td{background:var(--accent-soft)}.session-records{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-top:20px}.record-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;background:var(--surface);cursor:pointer;transition:border-color var(--transition),box-shadow var(--transition)}.record-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.record-card--selected{border-color:var(--border-strong);box-shadow:0 0 0 1px var(--border-strong)}.record-card--target{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.record-card__head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.record-card__time{font-size:12px;color:var(--muted)}.record-card__badge{font-size:11px;font-weight:600;color:var(--accent-hover);background:var(--accent-soft);padding:4px 10px;border-radius:var(--radius-full)}.record-card__title{margin:0 0 12px;font-size:16px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.record-card__meta{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;margin:0;font-size:13px}.record-card__meta dt{margin:0;color:var(--muted);font-weight:500;font-size:12px}.record-card__meta dd{margin:4px 0 0;font-weight:600}.record-card__id{margin:12px 0 0;font-size:11px;color:var(--muted);word-break:break-all}.record-card__progress{margin-top:14px;padding:14px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-muted)}.record-card__progressHead{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted);margin-bottom:8px}.record-card__progressTag{font-size:11px;font-weight:700;padding:3px 10px;border-radius:var(--radius-full);background:var(--surface);color:var(--text-secondary);white-space:nowrap}.record-card__progressTag.ok{background:var(--success-bg);color:var(--success)}.record-card__progressTag.err{background:var(--err-bg);color:var(--err)}.record-card__results{margin-top:12px}.record-card__resultsBody{margin-top:10px;border:1px solid var(--border);border-radius:var(--radius-md);padding:14px;background:var(--surface-muted)}.result-mini-list{display:grid;gap:10px}.result-mini{border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 14px;background:var(--surface)}.result-mini__head{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.result-mini__name{font-weight:600;font-size:13px;word-break:break-all}.result-mini__score{font-size:13px;white-space:nowrap}.result-mini__meta{margin-top:6px;font-size:12px}.result-mini__comment{margin-top:8px;font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-word}.record-card__actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.record-card__actions button{flex:1 1 auto;min-width:calc(50% - 4px);padding:11px 14px;font-size:13px}.result-block{padding:20px 0;border-top:1px solid var(--border)}.result-block:first-of-type{border-top:none;padding-top:0}.result-block h3{margin:0 0 10px;font-size:16px;font-weight:600}.score-line{margin:0 0 8px;font-size:15px}.dims p{margin:6px 0;font-size:14px;color:var(--text-secondary)}.comment{margin:12px 0 0;white-space:pre-wrap;line-height:1.7;font-size:14px}.progress-wrap{margin-top:20px;border:1px solid var(--border);background:var(--surface-muted);border-radius:var(--radius-md);padding:18px}.progress-head{display:flex;gap:12px;align-items:baseline;justify-content:space-between;flex-wrap:wrap;color:var(--muted);font-size:13px}.progress-bar{margin-top:12px;height:6px;border-radius:var(--radius-full);background:var(--border);overflow:hidden}.progress-bar__fill{height:100%;background:var(--accent);width:0%;transition:width .22s ease}.log-box{margin-top:12px;max-height:200px;overflow:auto;background:var(--surface-muted);color:var(--text-secondary);border-radius:var(--radius-md);padding:14px 16px;font-size:12px;line-height:1.5;border:1px solid var(--border);font-family:var(--font-mono)}.json-out{margin:0;padding:18px;background:var(--surface-muted);color:var(--text-secondary);border-radius:var(--radius-md);font-size:12px;line-height:1.55;overflow:auto;max-height:70vh;border:1px solid var(--border);font-family:var(--font-mono)}.banner-err{margin-top:24px;padding:16px 18px;background:var(--err-bg);border:1px solid #fecaca;border-radius:var(--radius-md);color:var(--err);font-size:14px}.banner-warn{margin:0 0 16px;padding:16px 18px;background:var(--warn-bg);border:1px solid #fde68a;border-radius:var(--radius-md);color:var(--warn);font-size:14px}.empty-state{padding:32px 20px;text-align:center;color:var(--muted);font-size:14px;border:1px dashed var(--border);border-radius:var(--radius-md);background:var(--surface-muted)}