:root{--bg:#eef1f8;--surface:#ffffff;--surface-2:#f6f7fb;--ink:#14172b;--muted:#5b6180;--line:#dfe3ee;--brand:#4338ca;--brand-2:#6d5df6;--brand-soft:#e9e7fd;--ok:#15803d;--ok-soft:#dcfce7;--warn:#b45309;--warn-soft:#fef3c7;--danger:#be123c;--danger-soft:#ffe4e6;--r:14px;--shadow:0 1px 2px rgba(20,23,43,.06), 0 8px 24px rgba(20,23,43,.06);--font:"Noto Sans JP",system-ui,-apple-system,"Hiragino Kaku Gothic ProN",sans-serif;--display:"Zen Kaku Gothic New","Noto Sans JP",system-ui,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--brand);text-underline-offset:3px}:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}.app{min-height:100%;display:flex;flex-direction:column}.hdr{position:sticky;top:0;z-index:20;background:#ffffffdb;backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.hdr-in{max-width:1040px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:12px}.logo{font-family:var(--display);font-weight:900;letter-spacing:.02em;font-size:18px;display:flex;align-items:center;gap:8px;cursor:pointer;background:none;border:0;padding:0}.logo i{width:26px;height:26px;border-radius:9px;display:grid;place-items:center;font-style:normal;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:13px;font-weight:800}.nav{margin-left:auto;display:flex;align-items:center;gap:6px}.main{flex:1;width:100%;max-width:1040px;margin:0 auto;padding:22px 16px 64px}.foot{padding:18px 16px 30px;text-align:center;color:var(--muted);font-size:12px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}.card-p{padding:18px}.row{display:flex;gap:10px;align-items:center}.row-wrap{flex-wrap:wrap}.spread{display:flex;gap:12px;align-items:center;justify-content:space-between}.grid{display:grid;gap:14px}.grid-2{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.stack{display:flex;flex-direction:column;gap:14px}.muted{color:var(--muted)}.small{font-size:13px}.tiny{font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}h1{font-family:var(--display);font-size:26px;line-height:1.35;margin:0 0 4px}h2{font-family:var(--display);font-size:19px;margin:0 0 10px}h3{font-family:var(--display);font-size:15px;margin:0}.page-head{margin-bottom:18px}.crumb{background:none;border:0;padding:0;color:var(--muted);font-size:13px;cursor:pointer}.crumb:hover{color:var(--brand)}.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:8px 14px;border-radius:10px;cursor:pointer;font-weight:600;font-size:14px;transition:transform .08s ease,background .15s ease,border-color .15s ease}.btn:hover{border-color:#c7cde0;background:var(--surface-2)}.btn:active{transform:translateY(1px)}.btn[disabled]{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:#3a30b4;border-color:#3a30b4}.btn.ghost{border-color:transparent;background:transparent}.btn.ghost:hover{background:var(--surface-2)}.btn.danger{color:var(--danger);border-color:var(--danger-soft)}.btn.danger:hover{background:var(--danger-soft)}.btn.sm{padding:5px 10px;font-size:13px;border-radius:8px}.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}.field>label{font-size:13px;font-weight:600;color:var(--muted)}.input,.select,.textarea{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:9px 12px}.input:focus,.select:focus,.textarea:focus{border-color:var(--brand-2);outline:none;box-shadow:0 0 0 3px var(--brand-soft)}.textarea{min-height:110px;resize:vertical;line-height:1.7}.chip{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700;background:var(--surface-2);border:1px solid var(--line);color:var(--muted)}.chip.brand{background:var(--brand-soft);border-color:transparent;color:var(--brand)}.chip.ok{background:var(--ok-soft);border-color:transparent;color:var(--ok)}.chip.warn{background:var(--warn-soft);border-color:transparent;color:var(--warn)}.chip.danger{background:var(--danger-soft);border-color:transparent;color:var(--danger)}.banner{padding:10px 14px;border-radius:10px;font-size:13px;font-weight:600}.banner.err{background:var(--danger-soft);color:var(--danger)}.banner.ok{background:var(--ok-soft);color:var(--ok)}.course-card{text-align:left;cursor:pointer;padding:16px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s ease;display:flex;flex-direction:column;gap:8px;width:100%}.course-card:hover{transform:translateY(-2px);border-color:var(--brand-2)}.course-card .bar{height:4px;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--brand-2));width:44px}.section{margin-bottom:24px}.section-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}.section-head .n{font-family:var(--display);font-weight:900;font-size:12px;color:var(--brand);background:var(--brand-soft);border-radius:8px;padding:2px 8px;letter-spacing:.06em}.track{position:relative;padding-left:26px}.track:before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;border-radius:2px;background:linear-gradient(var(--brand-soft),var(--line))}.item{position:relative;display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:8px;transition:border-color .12s ease,transform .08s ease}.item:hover{border-color:var(--brand-2);transform:translate(2px)}.item:before{content:"";position:absolute;left:-22px;top:20px;width:10px;height:10px;border-radius:99px;background:var(--surface);border:2px solid var(--line)}.item.done:before{background:var(--ok);border-color:var(--ok)}.item .ico{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:16px;background:var(--surface-2);border:1px solid var(--line)}.item .body{flex:1;min-width:0}.item .body .t{font-weight:700;line-height:1.5}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}.table th{font-size:12px;color:var(--muted);font-weight:700;white-space:nowrap}.table tbody tr:hover{background:var(--surface-2)}.scroll-x{overflow-x:auto}.q{border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:10px;background:var(--surface)}.q .qn{font-size:12px;font-weight:800;color:var(--brand)}.opt{display:flex;gap:9px;align-items:flex-start;padding:9px 11px;border:1px solid var(--line);border-radius:10px;margin-top:6px;cursor:pointer}.opt:hover{background:var(--surface-2)}.opt input{margin-top:5px;accent-color:var(--brand)}.opt.sel{border-color:var(--brand);background:var(--brand-soft)}.q.ok{border-color:#a7e0bd;background:#f4fdf7}.q.ng{border-color:#f3bccb;background:#fff6f8}.prose{white-space:pre-wrap;word-break:break-word}.center{display:grid;place-items:center;min-height:70vh;padding:20px}.auth{width:100%;max-width:400px}.spin{width:26px;height:26px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:99px;animation:sp .8s linear infinite;margin:40px auto}@keyframes sp{to{transform:rotate(360deg)}}@media (max-width:640px){h1{font-size:22px}.hdr-in{padding:8px 12px}.main{padding:16px 12px 56px}.nav .btn{padding:6px 10px;font-size:13px}}