@charset "UTF-8";
:root{--ink:#172e3b;--muted:#6d787d;--paper:#f6f4ef;--card:#fffefa;--line:#dfe2dc;--blue:#255fc5;--blue-light:#eaf0fd;--orange:#bf613e;--sans:system-ui,-apple-system,"Segoe UI","Malgun Gothic",sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);font-size:15px;line-height:1.75;letter-spacing:-.025em}button,input,textarea,select{font:inherit;letter-spacing:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}a{color:inherit}button:focus-visible,a:focus-visible{outline:3px solid #92b4fa;outline-offset:4px}input:focus,textarea:focus,select:focus{outline:2px solid #7d9ed7;outline-offset:1px}.boot{display:grid;place-content:center;min-height:90vh;text-align:center}.brand-mark{font:700 48px Georgia,serif;letter-spacing:-.08em}.shell{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:100dvh}.sidebar{position:sticky;top:0;height:100dvh;padding:34px 24px 24px;background:var(--ink);color:#ecf0ee;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:14px;text-decoration:none}.brand .brand-mark{font-size:42px}.brand-name{font-size:21px;font-weight:700;letter-spacing:-.04em;line-height:1.2}.brand-sub{color:#aebfc5;font-size:11px;letter-spacing:.15em;margin-top:5px}.side-rule{height:1px;background:#ffffff24;margin:28px 0}.sidebar nav{display:grid;gap:8px}.nav-button{border:0;background:none;color:#becbd0;padding:12px 14px;display:flex;align-items:center;gap:12px;text-align:left;border-radius:7px;font-weight:550}.nav-button.active{color:#fff;background:#ffffff13}.nav-button:hover{background:#ffffff0b;color:white}.nav-icon{font-size:18px;width:20px;text-align:center}.side-note{margin-top:auto;color:#aebfc5;font-size:12px;line-height:1.9;padding-top:30px}.side-note strong{font-weight:500;color:#e1e8e8}.side-note .dot{background:#82b69d}.side-footer{margin-top:20px;padding-top:18px;border-top:1px solid #ffffff24;display:flex;justify-content:space-between;font-size:12px}.text-button{background:none;border:0;padding:0;color:inherit;text-decoration:underline;text-underline-offset:4px;font-size:13px}.main{min-width:0;padding:30px 54px 70px;max-width:1400px;width:100%;margin:auto}.topbar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:42px;font-size:12px;letter-spacing:.04em}.eyebrow{text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:650;letter-spacing:.16em}.status{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:12px}.dot{width:6px;height:6px;border-radius:100%;background:#52836a;display:inline-block;flex:none}.status.warn .dot{background:var(--orange)}.mobile-brand{display:none}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;margin-bottom:38px;align-items:center}.hero h1{font-size:clamp(32px,3.3vw,48px);font-weight:550;letter-spacing:-.065em;line-height:1.35;margin:16px 0 18px}.hero h1 em{font-style:normal;color:var(--blue)}.hero p{max-width:430px;color:var(--muted);line-height:1.9;margin:0;font-size:14px}.hero-quote{border-left:2px solid #c1c9ce;padding:4px 0 4px 24px;color:#55666f;font-size:15px}.hero-quote span{display:block;font-size:11px;color:#889198;margin-top:12px;letter-spacing:.04em}.section-title{font-size:17px;font-weight:650;margin:0}.section-heading{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:18px;gap:12px}.small{font-size:12px;color:var(--muted)}.card{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:28px}.start-card{border-top:3px solid var(--blue)}.card h2{font-size:19px;margin:0 0 4px;font-weight:650}.card .intro{font-size:13px;color:var(--muted);margin:0 0 23px}.grid-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field{display:grid;gap:7px;margin-bottom:18px}.field label{font-size:12px;font-weight:650;color:#52616a}.field input,.field select,.field textarea{background:#fff;border:1px solid #d5dcd9;border-radius:6px;width:100%;padding:11px 12px;color:var(--ink);min-width:0}.field textarea{resize:vertical}.topic-chips{display:flex;gap:7px;flex-wrap:wrap;margin:-6px 0 22px}.chip{background:#f3f5f1;border:1px solid #e1e5df;color:#65746e;padding:5px 10px;font-size:12px;border-radius:5px}.chip:hover,.chip.selected{background:var(--blue-light);color:var(--blue);border-color:#c9d8f2}.primary{background:var(--blue);border:1px solid var(--blue);color:#fff;padding:12px 20px;border-radius:6px;font-weight:600;font-size:14px;display:inline-flex;gap:22px;align-items:center;justify-content:center}.primary:hover{background:#194fae}.secondary{background:transparent;border:1px solid #cfd7d5;color:var(--ink);padding:10px 16px;border-radius:6px;font-size:13px}.secondary:hover{background:#edf0eb}.start-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:8px}.start-bottom .small{max-width:360px;line-height:1.7}.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0 34px}.stat{padding:18px 20px;border:1px solid var(--line);border-radius:8px;background:#f0f1eb}.stat strong{font-size:25px;font-weight:550;letter-spacing:-.04em;line-height:1.4}.stat span{font-size:11px;color:var(--muted);display:block;margin-bottom:5px}.stat .unit{display:inline;font-size:12px;margin-left:4px}.history-list{display:grid;gap:10px}.history-item{border:1px solid var(--line);border-radius:8px;background:var(--card);width:100%;padding:18px 22px;text-align:left;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:20px}.history-item:hover{border-color:#a0b2c8}.history-item h3{font-size:15px;margin:0 0 5px;font-weight:600}.history-meta{display:flex;gap:9px;color:var(--muted);font-size:11px}.badge{font-size:10px;background:#eaf0e9;color:#57715d;border-radius:4px;padding:2px 7px;white-space:nowrap}.badge.pending{background:#f6eadd;color:#977249}.history-arrow{color:#81919b}.empty{padding:34px;text-align:center;border:1px dashed #cfd6d1;border-radius:9px;color:var(--muted);font-size:13px}.page-title{margin:0 0 10px;font-size:32px;font-weight:550;letter-spacing:-.05em;line-height:1.4}.page-sub{color:var(--muted);font-size:13px;margin:0 0 30px}.training-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.back{border:0;background:none;color:var(--muted);padding:0;font-size:12px}.stepper{display:grid;grid-template-columns:repeat(5,1fr);margin:24px 0 32px;gap:3px}.step{border-top:3px solid #dce1db;padding:10px 4px 0;color:#98a19d;font-size:11px}.step.active{color:var(--blue);border-color:var(--blue);font-weight:650}.step.done{color:#61756a;border-color:#90aa99}.step b{font-size:10px;margin-right:5px;font-weight:500}.scenario{padding:20px 24px;background:#e9ede7;border:1px solid #dce2d9;border-radius:9px;margin-bottom:26px}.scenario .eyebrow{color:#667a69;margin-bottom:8px}.scenario p{margin:0;font-size:14px;line-height:1.9}.turn{margin:0 0 24px;padding-left:20px;border-left:2px solid #cbd4d7}.turn.mine{border-color:#a7bcec;background:#edf2fb66;padding:18px 22px;border-radius:0 8px 8px 0}.turn-label{font-size:11px;letter-spacing:.07em;color:#7b8a93;margin-bottom:9px;display:flex;align-items:center;gap:9px}.turn-label strong{color:var(--ink);font-size:12px;font-weight:650;letter-spacing:0}.turn p{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.95;margin:0;font-size:15px}.composer{padding:25px;background:var(--card);border:1px solid #c2cfe1;border-radius:10px;box-shadow:0 3px 10px #203e5110}.composer h2{font-size:17px;font-weight:650;margin:0 0 6px}.composer .hint{font-size:12px;color:var(--muted);margin:0 0 15px}.composer textarea{border:0;border-bottom:1px solid var(--line);background:transparent;width:100%;min-height:150px;resize:vertical;line-height:1.9;color:var(--ink);padding:8px 0}.composer textarea:focus{outline:none;border-color:var(--blue)}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}.counter{font-size:11px;color:var(--muted)}.thinking{padding:30px;text-align:center;background:#eaf0fd66;border-radius:9px;border:1px solid #cfdcf2;margin-top:20px}.thinking strong{font-weight:600;font-size:15px}.thinking p{font-size:12px;color:var(--muted);margin:6px 0 0}.thinking-dots{display:flex;gap:5px;justify-content:center;margin-bottom:15px}.thinking-dots i{height:5px;width:5px;background:var(--blue);border-radius:50%;animation:pulse 1.1s infinite}.thinking-dots i:nth-child(2){animation-delay:.2s}.thinking-dots i:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.error-box{border:1px solid #dfb9a6;background:#fff3ed;color:#8d4629;padding:16px 18px;border-radius:7px;font-size:13px;margin:15px 0}.error-box p{margin:0 0 10px}.evaluation{border-top:1px solid var(--line);padding-top:30px;margin-top:30px}.score-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}.score-card{padding:17px 14px;background:var(--card);border:1px solid var(--line);border-radius:8px}.score-card .score{font-size:31px;color:var(--blue);line-height:1.5}.score-card .score small{font-size:12px;color:#8b969d}.score-card h3{font-size:12px;margin:0 0 8px;font-weight:650}.score-bar{height:3px;background:#e5e9e9;margin-top:10px}.score-bar i{display:block;height:100%;background:#6a8bc5}.reason{font-size:12px;line-height:1.8;color:#61717b;margin:12px 0 0}.analysis-block{margin-top:22px}.analysis-block h3{font-size:13px;margin:0 0 8px}.analysis-block p{font-size:14px;white-space:pre-wrap;line-height:1.95;margin:0}.improved{padding:24px;background:#eaf0fd;border-radius:9px;margin-top:24px}.improved h3{color:var(--blue);font-size:12px;margin:0 0 12px}.improved p{margin:0;white-space:pre-wrap;font-size:15px;line-height:1.95}.end-actions{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap}.settings-grid{display:grid;gap:20px}.memory{font-size:14px;line-height:2;white-space:pre-wrap;color:#52656f;margin:18px 0 0}.login-page{min-height:100dvh;display:grid;grid-template-columns:1.1fr 1fr}.login-intro{background:var(--ink);color:#f8f8f2;padding:60px max(40px,7vw);display:flex;flex-direction:column;justify-content:center}.login-intro .brand{margin-bottom:60px}.login-intro h1{font-weight:500;font-size:clamp(35px,4vw,54px);line-height:1.4;letter-spacing:-.055em;margin:0 0 24px}.login-intro p{color:#b5c5cb;font-size:14px;max-width:360px;line-height:1.95}.login-intro .eyebrow{color:#90abb8;margin-bottom:20px}.login-form-area{display:grid;place-items:center;padding:40px}.login-card{max-width:350px;width:100%}.login-card h2{font-size:25px;font-weight:600;letter-spacing:-.04em;margin:14px 0 10px}.login-card .primary{width:100%;margin-top:12px}.login-card .footnote{margin-top:30px;font-size:11px;color:var(--muted);line-height:1.9}.login-card .field{margin-bottom:18px}.login-card .page-sub{margin-bottom:28px}#toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);background:#172e3b;color:white;padding:12px 22px;font-size:13px;border-radius:8px;z-index:50;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw}#toast.show{opacity:1}.danger{color:#a6583e}.spinner{display:inline-block;width:14px;height:14px;border:2px solid #ffffff60;border-top-color:white;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
@media(min-width:1500px){.main{padding-left:75px;padding-right:75px}}@media(max-width:1050px){.shell{grid-template-columns:200px 1fr}.sidebar{padding:26px 18px}.main{padding:26px 30px 60px}.hero{gap:28px}.hero-quote{font-size:13px}.score-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){.shell{display:block}.sidebar{display:none}.main{padding:18px 20px 55px}.topbar{margin-bottom:28px;padding-bottom:15px}.mobile-brand{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;text-decoration:none}.mobile-brand .brand-mark{font-size:26px}.topbar>.eyebrow{display:none}.topbar .status{font-size:10px}.mobile-nav{display:flex;gap:3px;margin-top:-9px;margin-bottom:27px;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:10px}.mobile-nav button{background:none;border:0;font-size:12px;color:#7b878b;padding:7px 10px}.mobile-nav button.active{color:var(--blue);font-weight:650;background:#e9eef7;border-radius:5px}.hero{display:block;margin-bottom:28px}.hero h1{font-size:36px;margin-top:12px}.hero p{font-size:13px}.hero-quote{display:none}.card{padding:22px 20px;border-radius:9px}.grid-two{gap:12px}.field{margin-bottom:15px}.field input,.field select,.field textarea{font-size:16px;padding:10px}.topic-chips{gap:6px}.chip{font-size:11px}.start-bottom{display:block}.start-bottom .primary{width:100%;margin-top:17px}.start-bottom .small{font-size:11px}.stat-row{gap:8px;margin:20px 0 29px}.stat{padding:13px 12px}.stat strong{font-size:24px}.stat span{font-size:10px}.stat .unit{font-size:10px;margin-left:1px}.history-item{padding:15px}.history-item h3{font-size:14px}.history-meta{gap:6px;flex-wrap:wrap}.page-title{font-size:27px}.training-top{margin-bottom:17px}.stepper{gap:4px;margin:20px 0 24px}.step{font-size:10px;padding-top:8px}.step b{display:block;margin-bottom:1px}.scenario{padding:17px 18px}.scenario p{font-size:13px}.turn{padding-left:15px}.turn p{font-size:14px}.turn.mine{padding:16px}.composer{padding:20px 18px}.composer textarea{font-size:16px;min-height:170px}.composer-bottom{align-items:end}.composer-bottom .primary{padding:11px 16px;gap:10px;font-size:13px}.score-grid{gap:8px}.score-card{padding:15px}.score-card .score{font-size:30px}.analysis-block p{font-size:13px}.improved{padding:20px}.improved p{font-size:14px}.login-page{display:block}.login-intro{padding:28px 24px 30px}.login-intro .brand{margin-bottom:28px}.login-intro .eyebrow{display:none}.login-intro h1{font-size:30px;margin-bottom:10px}.login-intro p{font-size:12px;margin:0}.login-form-area{padding:30px 25px 45px}.login-card{max-width:400px}.login-card h2{font-size:22px}.login-card .field input{font-size:16px}.login-card .footnote{margin-top:22px}}@media(min-width:721px){.mobile-nav{display:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.method-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:24px 0}.method-card h2{margin-top:12px}.method-card h3{font-size:15px;margin-top:22px}.method-card p,.example-explanation p{line-height:1.8}.method-card blockquote{margin:20px 0;padding:16px;border-left:3px solid #3866d7;background:#f2f4f8;line-height:1.8}.example-explanation{border-top:1px solid #ccd6df;margin-top:20px;padding-top:12px}.example-explanation h4{margin:0 0 8px}.model-example{margin-top:20px}.mobile-nav{overflow-x:auto;white-space:nowrap}@media(max-width:760px){.method-grid{grid-template-columns:1fr}.mobile-nav button{flex-shrink:0}.stepper{overflow-x:auto}.step{min-width:90px}}
