:root{color:#eee9dd;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-synthesis:none;text-rendering:optimizelegibility;--ink:#eee9dd;--muted:#aaa294;--paper:#1c1a17;--paper-deep:#29251f;--line:#403b34;--red:#e06a5c;--red-dark:#b94a3d;--green:#80b99c;--green-soft:#1e3129;--gold:#d2ad68;--gold-soft:#30281b;--shadow:0 28px 80px #00000057;background:#141310;font-family:Avenir Next,Avenir,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}body{background-color:#141310;background-image:linear-gradient(90deg,#0000 49.9%,#ffffff04 50%,#0000 50.1%),none;background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:32px 100%;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible{outline-offset:3px;outline:3px solid #b33b2e40}.brand-lockup{align-items:center;gap:12px;display:flex}.brand-mark{width:64px;height:64px;color:var(--red);letter-spacing:-.08em;border:2px solid;place-items:center;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:24px;font-weight:700;line-height:1;display:grid;transform:rotate(-2deg)}.brand-mark.small{width:42px;height:42px;font-size:17px}.brand-name{letter-spacing:.12em;text-transform:uppercase;font-size:16px;font-weight:700}.eyebrow{color:var(--red);letter-spacing:.15em;text-transform:uppercase;margin:0;font-size:12px;font-weight:700}.loading-screen{place-content:center;justify-items:center;gap:24px;min-height:100vh;display:grid}.loading-line{background:var(--line);width:64px;height:2px;overflow:hidden}.loading-line:after{background:var(--red);content:"";width:50%;height:100%;animation:1s ease-in-out infinite alternate load;display:block}@keyframes load{to{transform:translate(100%)}}.login-shell{grid-template-columns:minmax(0,1.15fr) minmax(420px,.85fr);min-height:100vh;display:grid}.login-intro{border-right:1px solid var(--line);flex-direction:column;justify-content:space-between;min-height:100vh;padding:clamp(32px,5vw,76px);display:flex}.intro-copy{max-width:660px;margin:80px 0}.intro-copy h1{color:var(--ink);letter-spacing:-.08em;margin:24px 0 18px;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:clamp(60px,8vw,116px);font-weight:500;line-height:1.08}.translation{color:var(--muted);margin:0;font-family:Georgia,serif;font-size:clamp(20px,2vw,30px);font-style:italic}.intro-note{max-width:420px;color:var(--muted);margin:0;font-size:14px;line-height:1.7}.login-panel{background:#0a090847;place-items:center;min-height:100vh;padding:48px;display:grid}.login-form{gap:22px;width:min(100%,390px);display:grid}.login-form h2{letter-spacing:-.03em;margin:10px 0 8px;font-family:Georgia,serif;font-size:38px;font-weight:500}.form-note{color:var(--muted);margin:0;line-height:1.6}.login-form label{margin-bottom:-12px;font-size:13px;font-weight:700}.login-form input{border:1px solid var(--line);width:100%;height:54px;color:var(--ink);background:#181613;border-radius:0;padding:0 16px;transition:border-color .15s,box-shadow .15s}.login-form input:focus{border-color:var(--red);box-shadow:inset 3px 0 var(--red)}.form-error{color:var(--red-dark);margin:-8px 0 0;font-size:14px}.primary-button{border:1px solid var(--red);color:#fffaf5;background:var(--red-dark);cursor:pointer;min-height:54px;padding:14px 20px;font-weight:700;transition:background .15s,transform .15s}.primary-button:hover:not(:disabled){background:var(--red);transform:translateY(-1px)}.primary-button:disabled{cursor:wait;opacity:.65}.primary-button.compact{justify-self:end;min-height:46px;padding-inline:28px}.study-shell{width:min(100%,1440px);min-height:100vh;margin:0 auto;padding:28px clamp(20px,4vw,64px) 64px}.study-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding-bottom:26px;display:flex}.text-button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-bottom:1px solid #0000;padding:8px 0;font-size:13px}.text-button:hover{color:var(--ink);border-bottom-color:currentColor}.page-error{border-left:3px solid var(--red);color:#f2a096;background:#321c19;justify-content:space-between;align-items:center;gap:20px;margin-top:20px;padding:14px 16px;font-size:14px;display:flex}.page-error button{color:inherit;cursor:pointer;white-space:nowrap;background:0 0;border:0;border-bottom:1px solid}.study-layout{grid-template-columns:190px minmax(0,820px);justify-content:center;gap:clamp(40px,7vw,100px);padding-top:clamp(34px,6vw,76px);display:grid}.session-rail{flex-direction:column;justify-content:space-between;min-height:540px;padding:8px 0;display:flex}.session-count{color:var(--muted);margin:14px 0 10px;font-size:18px}.session-count strong{color:var(--ink);font-family:Georgia,serif;font-size:46px;font-weight:500}.session-progress,.course-progress{background:var(--line);height:4px;overflow:hidden}.session-progress span,.course-progress span{background:var(--red);height:100%;transition:width .25s;display:block}.course-stats{gap:14px;margin:0;display:grid}.course-stats div{border-top:1px solid var(--line);justify-content:space-between;align-items:baseline;padding-top:12px;display:flex}.course-stats dt{color:var(--muted);font-size:12px}.course-stats dd{margin:0;font-family:Georgia,serif;font-size:20px}.question-card{border:1px solid var(--line);background:var(--paper);min-height:540px;box-shadow:var(--shadow);padding:clamp(28px,5vw,56px)}.question-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.item-label{letter-spacing:.1em;text-transform:uppercase;border:1px solid;padding:5px 9px;font-size:11px;font-weight:700}.item-label.new,.item-label.retry{color:var(--red)}.item-label.review{color:var(--green)}.item-label.grammar{color:var(--gold)}.question-instruction{color:var(--muted);font-size:13px}.japanese-prompt{letter-spacing:-.06em;text-align:center;margin:clamp(44px,7vw,80px) 0;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:clamp(68px,10vw,112px);font-weight:500;line-height:1}.vocabulary-teaching{gap:30px;margin-top:clamp(34px,5vw,58px);display:grid}.vocabulary-word{text-align:center}.vocabulary-word .japanese-prompt{margin:0 0 18px}.vocabulary-reading{margin:0;font-size:clamp(22px,3vw,28px);font-weight:700}.vocabulary-meaning{color:var(--muted);margin:8px 0 0;font-family:Georgia,serif;font-size:18px}.vocabulary-example{border-left:3px solid var(--red);background:#2d211d;padding:18px 20px}.vocabulary-example p{margin:4px 0;line-height:1.5}.vocabulary-example .eyebrow{margin-bottom:12px}.vocabulary-example-japanese{font-size:18px;font-weight:700}.vocabulary-example-reading,.vocabulary-example-meaning{color:var(--muted)}.vocabulary-example-reading{font-size:15px}.vocabulary-example-meaning{font-size:13px}.vocabulary-teaching>.primary-button{justify-self:end}.grammar-explanation,.grammar-exercise{gap:28px;margin-top:clamp(34px,5vw,58px);display:grid}.grammar-kicker{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:0 0 12px;font-size:13px;font-weight:700}.grammar-explanation h2{color:var(--ink);letter-spacing:-.04em;margin:0;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:clamp(46px,7vw,76px);font-weight:500;line-height:1.15}.grammar-pronunciation{color:var(--muted);margin:12px 0 0;font-size:14px}.grammar-pronunciation span{color:var(--gold);margin-left:8px;font-size:17px;font-weight:700}.grammar-points{gap:0;margin:0;padding:0;list-style:none;display:grid}.grammar-points li{border-top:1px solid var(--line);color:var(--muted);padding:13px 0 13px 24px;line-height:1.55;position:relative}.grammar-points li:before{background:var(--gold);content:"";width:6px;height:6px;position:absolute;top:19px;left:3px;transform:rotate(45deg)}.grammar-example{border-left:3px solid var(--gold);background:var(--gold-soft);padding:18px 20px}.grammar-example p{margin:4px 0}.grammar-example>p:not(.eyebrow,.grammar-example-japanese){color:var(--muted);font-size:13px}.grammar-example-japanese{font-size:22px;font-weight:700;margin-top:12px!important}.grammar-explanation>.primary-button{justify-self:end}.grammar-prompt{text-align:center;word-break:keep-all;margin:14px 0 20px;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:clamp(36px,6vw,60px);font-weight:500;line-height:1.25}.grammar-prompt.en{font-family:Georgia,serif;font-size:clamp(30px,5vw,48px)}.grammar-options{grid-template-columns:1fr}.grammar-option{grid-template-columns:28px 1fr;min-height:68px}.grammar-option-text{font-size:18px;font-weight:700}.answer-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.answer-option{border:1px solid var(--line);min-height:84px;color:var(--ink);cursor:pointer;text-align:left;background:0 0;grid-template-columns:28px minmax(72px,auto) 1fr;align-items:center;gap:10px;padding:14px;transition:border-color .12s,background .12s,transform .12s;display:grid}.answer-option:hover:not(:disabled){z-index:1;border-color:var(--ink);background:#25221d;transform:translateY(-1px)}.answer-option:disabled{cursor:default}.answer-option.selected{border-color:var(--ink);background:var(--paper-deep)}.answer-option.correct{border-color:var(--green);background:var(--green-soft)}.answer-option.incorrect{border-color:var(--red);background:#351d19}.option-key{border:1px solid var(--line);width:24px;height:24px;color:var(--muted);border-radius:50%;place-items:center;font-size:11px;display:grid}.option-reading{font-size:17px;font-weight:700}.option-meaning{color:var(--muted);font-size:13px;line-height:1.35}.feedback{border-top:2px solid;gap:18px;margin-top:24px;padding-top:22px;display:grid}.feedback.positive{border-color:var(--green)}.feedback.negative{border-color:var(--red)}.feedback-summary{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.feedback-summary p{margin:4px 0 0}.feedback-title{color:var(--muted);letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}.feedback-divider{color:var(--line);margin:0 8px}.feedback-mark{color:var(--green);font-family:serif;font-size:42px;line-height:1}.negative .feedback-mark{color:var(--red)}.example{border-left:3px solid var(--line);background:#24211c;padding:16px 18px}.example p{margin:3px 0;line-height:1.5}.example p:first-child{font-size:17px;font-weight:700}.example-reading,.example p:last-child{color:var(--muted);font-size:13px}.empty-state{text-align:center;width:min(100%,660px);margin:clamp(70px,12vw,150px) auto 0}.empty-stamp{border:3px double var(--red);width:72px;height:72px;color:var(--red);border-radius:50%;place-items:center;margin:0 auto 32px;font-family:Hiragino Mincho ProN,Yu Mincho,serif;font-size:32px;font-weight:700;display:grid;transform:rotate(-7deg)}.empty-state h1{letter-spacing:-.04em;margin:12px 0 16px;font-family:Georgia,serif;font-size:clamp(42px,7vw,68px);font-weight:500}.empty-state>p:not(.eyebrow,.next-review){max-width:520px;color:var(--muted);margin:0 auto;font-size:17px;line-height:1.7}.next-review{color:var(--ink);margin:20px 0 0;font-size:13px;font-weight:700}.course-progress-block{width:min(100%,420px);margin:46px auto 0}.course-progress-copy{color:var(--muted);justify-content:space-between;align-items:baseline;margin-bottom:10px;font-size:12px;display:flex}.course-progress-copy strong{color:var(--ink);font-size:14px}.study-loading{border:1px solid var(--line);background:var(--paper);width:min(100%,820px);min-height:540px;box-shadow:var(--shadow);margin:76px auto 0;padding:56px}.skeleton{background:linear-gradient(90deg,#292620 25%,#363129 50%,#292620 75%) 0 0/200% 100%;animation:1.4s infinite shimmer}.skeleton.short{width:110px;height:22px}.skeleton.prompt{width:45%;height:100px;margin:80px auto}.skeleton.options{height:180px}@keyframes shimmer{to{background-position-x:-200%}}@media (width<=900px){.login-shell{grid-template-columns:1fr}.login-intro{border-right:0;border-bottom:1px solid var(--line);min-height:auto;padding-bottom:54px}.intro-copy{margin:72px 0}.login-panel{min-height:auto;padding-block:72px}.study-layout{grid-template-columns:1fr;gap:24px}.session-rail{grid-template-columns:minmax(160px,.8fr) 1.2fr;gap:40px;min-height:auto;display:grid}.course-stats{grid-template-columns:repeat(2,1fr);align-self:end;gap:18px}.course-stats div{gap:5px;display:grid}}@media (width<=620px){.login-intro,.login-panel{padding:28px 22px 44px}.login-intro{min-height:54vh}.intro-copy{margin:60px 0 44px}.intro-copy h1{font-size:clamp(50px,17vw,72px)}.intro-note{display:none}.login-panel{place-items:start stretch}.study-shell{padding:18px 14px 36px}.study-header{padding:0 6px 18px}.session-rail{grid-template-columns:1fr;gap:22px;padding-inline:6px}.session-count{margin-block:7px}.session-count strong{font-size:34px}.course-stats{grid-template-columns:repeat(2,1fr)}.question-card{min-height:0;padding:22px 16px}.question-heading{align-items:flex-start}.question-instruction{text-align:right;max-width:150px}.japanese-prompt{margin:52px 0;font-size:clamp(60px,22vw,88px)}.grammar-explanation,.grammar-exercise{gap:22px;margin-top:34px}.grammar-explanation h2{font-size:clamp(40px,13vw,58px)}.grammar-prompt{font-size:clamp(26px,7.5vw,30px)}.grammar-prompt.en{font-size:clamp(28px,9vw,38px)}.grammar-explanation>.primary-button,.vocabulary-teaching>.primary-button{width:100%}.answer-options{grid-template-columns:1fr}.answer-option{min-height:68px}.primary-button.compact{width:100%}.empty-state{margin-top:72px;padding-inline:18px}.study-loading{margin-top:36px;padding:28px 20px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
