:root{--bg: #f3f5f7;--surface: #ffffff;--ink: #15202b;--muted: #5b6b78;--faint: #8a97a2;--line: #e3e8ec;--brand: #14705a;--brand-ink: #0c5544;--brand-tint: #e9f3ef;--accent: #a8702a;--ok: #1f7a4d;--ok-tint: #eaf5ef;--bad: #b23b3b;--bad-tint: #fbeeee;--radius: 14px;--shadow-sm: 0 1px 2px rgba(20, 30, 40, .06);--shadow: 0 6px 22px rgba(20, 35, 50, .08);--sans: "Inter", "Noto Sans JP", system-ui, sans-serif;--serif: "Noto Serif JP", Georgia, serif}*{box-sizing:border-box}:focus-visible{outline:3px solid #2f6df0;outline-offset:2px;border-radius:8px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:760px;margin:0 auto;padding:28px 20px 64px}.appbar,.loginbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:#ffffffe6;-webkit-backdrop-filter:saturate(1.1) blur(8px);backdrop-filter:saturate(1.1) blur(8px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:8px}.brand__mark{font-size:20px}.brand__name{font-weight:800;letter-spacing:-.01em;font-size:16px;white-space:nowrap}.appbar__right{display:flex;align-items:center;gap:12px}.metric{display:flex;align-items:baseline;gap:5px;font-size:12px;color:var(--muted);white-space:nowrap}@media (max-width: 470px){.metric--streak{display:none}}.metric b{font-size:16px;color:var(--ink);font-variant-numeric:tabular-nums}.metric--streak b{color:var(--ink)}.seg{display:inline-flex;background:#eef1f3;border-radius:9px;padding:2px}.seg__btn{border:0;background:transparent;padding:5px 10px;font-size:12px;font-weight:700;color:var(--faint);border-radius:7px;cursor:pointer}.seg__btn.is-active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}.btn{font-family:inherit;font-weight:700;font-size:15px;border:1px solid transparent;border-radius:11px;padding:12px 18px;cursor:pointer;transition:background .15s,border-color .15s,opacity .15s}.btn--block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--brand);color:#fff}.btn--primary:hover:not(:disabled){background:var(--brand-ink)}.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn--ghost:hover{border-color:#cfd6db}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.login{max-width:440px}.login__title{font-size:24px;margin:0 0 4px;letter-spacing:-.01em}.login__lead{color:var(--muted);margin:0 0 22px}.form{display:flex;flex-direction:column;gap:14px}.field{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;color:var(--muted)}.field input{font-size:15px;padding:11px 13px;border-radius:10px;border:1px solid var(--line);background:#fcfdfe;outline:none;font-family:inherit}.field input:focus{border-color:var(--brand)}.form__error{color:var(--bad);font-size:13px;margin:-2px 0 0;font-weight:600}.form__hint{text-align:center;color:var(--faint);font-size:12px;margin:4px 0 0}.greeting{color:var(--muted);font-size:14px;margin:0 0 6px}.page-title{font-size:26px;margin:0 0 4px;letter-spacing:-.02em}.page-sub{color:var(--muted);margin:0 0 24px}.modules{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}.mcard__btn{width:100%;text-align:left;display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;cursor:pointer;box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s,transform .08s;font-family:inherit;color:inherit}.mcard--active .mcard__btn:hover{border-color:var(--brand);box-shadow:var(--shadow)}.mcard--locked .mcard__btn{cursor:not-allowed;opacity:.62}.mcard__index{flex:none;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:16px;background:var(--brand-tint);color:var(--brand-ink)}.mcard--done .mcard__index{background:var(--ok-tint);color:var(--ok)}.mcard--locked .mcard__index{background:#eef1f3;color:var(--faint)}.mcard__body{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}.mcard__meta{display:flex;gap:6px}.badge{font-size:11px;font-weight:800;letter-spacing:.02em;color:var(--brand-ink);background:var(--brand-tint);padding:2px 8px;border-radius:999px}.badge--done{color:var(--ok);background:var(--ok-tint)}.mcard__title{font-weight:800;font-size:16px}.mcard__desc{color:var(--muted);font-size:13px}.mcard__chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}.chip{font-size:11px;font-weight:700;color:var(--muted);background:#f1f4f6;border:1px solid var(--line);padding:2px 8px;border-radius:7px}.chip--time{color:var(--faint)}.mcard__cta{flex:none;align-self:center;font-weight:800;font-size:13px;color:var(--brand)}.module__head{margin-bottom:22px}.module__kicker{font-size:12px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--faint)}.bar{height:6px;background:#e6eaee;border-radius:999px;margin-top:8px;overflow:hidden}.bar__fill{height:100%;background:var(--brand);border-radius:999px;transition:width .3s ease}.block-area{animation:fade .25s ease both}@keyframes fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.read__h{font-family:var(--serif);font-size:23px;font-weight:700;margin:0 0 14px;line-height:1.45}.read__p{font-family:var(--serif);font-size:16px;line-height:1.95;color:#2b3640;margin:0 0 16px}.read .btn,.video .btn{margin-top:10px}.video__frame{position:relative;aspect-ratio:16 / 9;border-radius:var(--radius);background:radial-gradient(120% 120% at 50% 30%,#20303c,#0f1922);display:grid;place-items:center;margin-bottom:16px;overflow:hidden}.video__play{width:64px;height:64px;border-radius:50%;border:0;cursor:pointer;background:#ffffffeb;color:#14202a;font-size:22px;display:grid;place-items:center;box-shadow:0 6px 20px #0000004d}.video__dur{position:absolute;right:10px;bottom:10px;background:#0009;color:#fff;font-size:12px;font-weight:700;padding:2px 7px;border-radius:6px}.video__status{position:absolute;left:12px;bottom:12px;color:#ff5a5a;font-size:12px}.block__h{font-size:19px;margin:0 0 6px}.block__lead{color:var(--muted);margin:0 0 4px;font-size:15px}.quiz__scene{margin-bottom:16px}.quiz__scene .scene{width:96px;height:96px}.quiz__prompt{font-size:19px;font-weight:700;line-height:1.6;margin:0 0 18px;word-break:auto-phrase}.options{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}.option{font-family:inherit;font-size:15px;font-weight:600;text-align:left;padding:14px 16px;border-radius:11px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:border-color .12s,background .12s}.option:hover:not(:disabled){border-color:#c4ccd2}.option.is-selected{border-color:var(--brand);background:var(--brand-tint)}.option.is-correct{border-color:var(--ok);background:var(--ok-tint);color:var(--ok);font-weight:700}.option.is-wrong{border-color:var(--bad);background:var(--bad-tint);color:var(--bad)}.option.is-dim{opacity:.5}.result{border-left:3px solid;border-radius:8px;padding:14px 16px;background:#fff}.result.is-correct{border-color:var(--ok);background:var(--ok-tint)}.result.is-wrong{border-color:var(--bad);background:var(--bad-tint)}.result__head{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin:0 0 6px}.result.is-correct .result__head{color:var(--ok)}.result.is-wrong .result__head{color:var(--bad)}.result__pts{font-size:12px;font-weight:800;color:#fff;background:var(--ok);padding:2px 8px;border-radius:999px}.result__body{margin:0 0 14px;font-size:14px;line-height:1.8;color:#3a454e;word-break:auto-phrase}.result .btn{width:100%}.scene{width:120px;height:120px}.scene__svg{width:100%;height:100%}.done{max-width:480px}.done__panel{text-align:center}.done__check{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--ok-tint);color:var(--ok);display:grid;place-items:center;font-size:28px;font-weight:900}.done__title{font-size:22px;margin:0 0 4px}.done__sub{color:var(--muted);margin:0 0 22px}.done__stats{display:flex;gap:10px;margin-bottom:22px}.stat{flex:1;background:#f7f9fa;border:1px solid var(--line);border-radius:12px;padding:14px 8px}.stat__num{display:block;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums}.stat__label{font-size:11px;color:var(--muted)}.done__panel .btn+.btn{margin-top:10px}.wip{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,var(--brand-tint),transparent 70%),var(--bg);position:relative}.wip__lang{position:absolute;top:18px;right:18px;display:flex;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:3px;box-shadow:var(--shadow-sm)}.wip__lang button{border:0;background:transparent;cursor:pointer;font:inherit;font-size:13px;font-weight:600;color:var(--muted);padding:6px 12px;border-radius:999px}.wip__lang button.is-active{background:var(--brand);color:#fff}.wip__card{width:100%;max-width:440px;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:48px 36px}.wip__mark{font-size:52px;line-height:1;margin-bottom:18px}.wip__badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--brand-ink);background:var(--brand-tint);padding:5px 12px;border-radius:999px;margin-bottom:18px}.wip__title{margin:0 0 12px;font-size:26px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}.wip[data-locale=ja] .wip__title{font-family:var(--serif)}.wip__body{margin:0 0 28px;color:var(--muted);font-size:15px;line-height:1.7}.wip__brand{font-size:13px;font-weight:700;color:var(--faint);letter-spacing:.01em;padding-top:20px;border-top:1px solid var(--line)}