.auth-page .field{display:flex;flex-direction:column;gap:var(--space-2);margin-bottom:var(--space-4);max-width:28rem}.auth-page .field input,.join-page .field input{min-height:44px;box-sizing:border-box;padding:0 var(--space-3);background:var(--surface);color:var(--text-1);border:1px solid var(--line-input);border-radius:var(--radius-sm);font:inherit}.auth-page .field .hint{margin-left:0}.auth-page .field-error{margin:0;color:var(--red)}.auth-page .state-error:focus-visible{outline:2px solid var(--accent)}.auth-page a,.auth-page .btn{display:inline-flex;align-items:center;box-sizing:border-box;min-height:44px;min-width:44px}.auth-page .btn{justify-content:center}.brand-logo{width:34px;height:34px;object-fit:contain;flex:none}@media(min-width:768px){.content:has(.home-page) main{padding-top:39px}}.shell{display:flex;min-height:100vh}.sidebar{display:flex;flex-direction:column;gap:var(--space-3);width:248px;flex:none;box-sizing:border-box;padding:var(--space-4);background:var(--bg-2);border-right:1px solid var(--line)}.sidebar nav{display:flex;flex-direction:column;gap:var(--space-1)}.sidebar nav a{display:flex;align-items:center;min-height:44px;padding:0 var(--space-3);border-radius:var(--radius-sm);color:var(--text-1);text-decoration:none}.sidebar nav a[aria-current=page]{background:var(--accent-soft);color:var(--accent-strong);font-weight:700;box-shadow:inset 3px 0 0 var(--accent)}.brand{font-weight:800;font-size:1.125rem}.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:var(--space-3)}.user-chip{display:flex;align-items:center;gap:var(--space-3)}.avatar{display:grid;place-items:center;width:40px;height:40px;border-radius:var(--radius-full);background:var(--accent-soft);color:var(--accent-strong);font-weight:700}.user-meta{display:flex;flex-direction:column;min-width:0}.user-role{color:var(--text-2);font-size:.875rem}.toggle-row{display:flex;gap:var(--space-2);align-items:center}.lang-toggle{display:flex;gap:var(--space-1)}.lang-toggle .btn[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.settings-link{display:inline-flex;align-items:center;min-height:44px;color:var(--accent-strong)}.content{flex:1;min-width:0}.content main{padding:var(--space-5)}.menu-button{display:none}.narrow-header{display:flex;align-items:center;gap:var(--space-3);padding-inline-end:var(--space-3)}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#00000073;display:flex}.drawer-backdrop .sidebar{height:100%;overflow-y:auto;background:var(--bg)}@media(max-width:767px){.shell{flex-direction:column}.menu-button{display:inline-flex;align-items:center;justify-content:center;margin:var(--space-2);width:44px;height:44px}.content main{padding:var(--space-4)}}.switcher{display:grid;gap:6px;padding:8px 12px}.switcher select{min-height:44px}.sample-tag{margin-inline-start:8px;font-size:.75rem;border:1px solid currentColor;border-radius:4px;padding:0 4px}.class-chip{display:inline-flex;align-items:center;gap:6px;margin:0;font-weight:600}.ai-status{margin:0;font-size:.875rem}.switcher-skeleton{height:44px;margin:8px 12px;border-radius:6px;background:var(--accent-soft)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.bare{min-height:100vh;display:flex;flex-direction:column}.bare-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px}.bare main{box-sizing:border-box;width:100%;max-width:480px;margin:0 auto;padding:16px}.nav-disabled{display:block;padding:.5rem .75rem;min-height:44px;color:var(--text-2);cursor:not-allowed}.nav-hint{display:block;font-size:.8em}.account-menu{position:relative}.account-panel{position:absolute;bottom:100%;inset-inline-start:0;z-index:20;min-width:240px;margin-bottom:var(--space-2);padding:var(--space-3);display:flex;flex-direction:column;gap:var(--space-3);background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius-md)}.account-id{display:flex;align-items:center;gap:var(--space-3)}.account-facts{display:grid;grid-template-columns:auto 1fr;gap:var(--space-1) var(--space-3);margin:0}.account-facts dd{margin:0}.account-error{margin:0;color:var(--red)}.sidebar{font-size:.875rem}.sidebar nav a{gap:10px;line-height:1.4;padding-block:6px}.nav-icon{flex:none}.brand{display:flex;align-items:center;gap:10px;font-size:.9375rem;line-height:1.3}.brand-product{display:block;font-size:.75rem;font-weight:600;color:var(--text-2)}.brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:none;border-radius:9px;background:var(--accent);color:var(--on-accent)}.sidebar-foot{border-top:1px solid var(--line);padding-top:var(--space-3);gap:var(--space-2)}.user-chip{gap:var(--space-2)}.avatar{flex:none;width:32px;height:32px}.user-meta{overflow-wrap:anywhere}.toggle-row{flex-wrap:wrap}.switcher{padding:10px 0;border-block:1px solid var(--line);gap:8px;min-width:0}.switcher-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px;color:var(--text-2);font-size:.75rem}.switcher select{width:100%;min-width:0;font-weight:600}.class-info{min-width:0}.class-chip{font-size:.75rem;line-height:1.5;padding:3px 6px;border-radius:var(--radius-sm);background:var(--sunken);color:var(--text-2)}.class-chip svg{flex:none}.ai-status{margin-top:6px;color:var(--text-2);font-size:.75rem}.sample-tag{display:inline-flex;width:fit-content;max-width:100%;margin:0;padding:2px 6px;border:1px solid var(--amber-line);border-radius:var(--radius-sm);background:var(--amber-soft);color:var(--amber);line-height:1.4;font-weight:600}.sample-banner{padding:6px var(--space-5);border-bottom:1px solid var(--amber-line);background:var(--amber-soft);color:var(--amber);font-size:.75rem}.sample-banner p{margin:0}.narrow-header{border-bottom:1px solid var(--line)}.narrow-header .class-info{padding-block:6px}.drawer-backdrop .sidebar{max-width:calc(100vw - 24px)}@media(max-width:767px){.sample-banner{padding-inline:var(--space-4)}}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/plus-jakarta-sans-latin-400-normal-Dhut76fR.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:600;font-display:swap;src:url(/assets/plus-jakarta-sans-latin-600-normal-DLTa1BUW.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:700;font-display:swap;src:url(/assets/plus-jakarta-sans-latin-700-normal-CfpNZvy6.woff2) format("woff2")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/ibm-plex-mono-latin-400-normal-DMJ8VG8y.woff2) format("woff2")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/ibm-plex-mono-latin-500-normal-DSY6xOcd.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:500;font-display:swap;src:url(/assets/plus-jakarta-sans-latin-500-normal-Bf-nb4oT.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:800;font-display:swap;src:url(/assets/plus-jakarta-sans-latin-800-normal-CusIZhrK.woff2) format("woff2")}:root{color-scheme:light;--text: var(--text-1);--radius: var(--radius-md);--border: var(--line-input);--bg: #ffffff;--bg-2: #f5f7f5;--surface: #ffffff;--sunken: #f1f4f1;--line: #e2e6e3;--line-2: #cfd5d0;--line-input: #7d857f;--text-1: #1c1f1d;--text-2: #454b47;--text-3: #6a716c;--accent: #25793a;--accent-strong: #1b5e2c;--accent-soft: #e2f0e5;--on-accent: #ffffff;--amber: #7a4b00;--amber-soft: #fff1d6;--amber-line: #e8c680;--blue: #244c82;--blue-soft: #e8eef7;--blue-line: #c6d4ea;--purple: #4e3a7a;--purple-soft: #eeeaf6;--purple-line: #d5cbe8;--red: #b3261e;--red-soft: #fbe7e4;--ink: #1f2320;--on-ink: #ffffff;--on-ink-2: #b9c0bb;--font-sans: "Plus Jakarta Sans", system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, monospace;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 999px;--elevation-1: 0 1px 2px rgba(28, 31, 29, .08);--elevation-2: 0 4px 12px rgba(28, 31, 29, .12)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg: #111412;--bg-2: #161a17;--surface: #1a1f1b;--sunken: #202621;--line: #2a312c;--line-2: #3a433c;--line-input: #6e776f;--text-1: #e7ece8;--text-2: #bac2bc;--text-3: #8d968f;--accent: #4db868;--accent-strong: #86d699;--accent-soft: #1d3324;--on-accent: #0b1a0f;--amber: #f0c56e;--amber-soft: #35290f;--amber-line: #6b5220;--blue: #a3bde6;--blue-soft: #1a2436;--blue-line: #304562;--purple: #c8b8f0;--purple-soft: #241e34;--purple-line: #433762;--red: #f08a80;--red-soft: #3a1e1b;--ink: #e7ece8;--on-ink: #111412;--on-ink-2: #4a524c;--elevation-1: 0 1px 2px rgba(0, 0, 0, .4);--elevation-2: 0 4px 12px rgba(0, 0, 0, .5)}}:root[data-theme=dark]{color-scheme:dark;--bg: #111412;--bg-2: #161a17;--surface: #1a1f1b;--sunken: #202621;--line: #2a312c;--line-2: #3a433c;--line-input: #6e776f;--text-1: #e7ece8;--text-2: #bac2bc;--text-3: #8d968f;--accent: #4db868;--accent-strong: #86d699;--accent-soft: #1d3324;--on-accent: #0b1a0f;--amber: #f0c56e;--amber-soft: #35290f;--amber-line: #6b5220;--blue: #a3bde6;--blue-soft: #1a2436;--blue-line: #304562;--purple: #c8b8f0;--purple-soft: #241e34;--purple-line: #433762;--red: #f08a80;--red-soft: #3a1e1b;--ink: #e7ece8;--on-ink: #111412;--on-ink-2: #4a524c;--elevation-1: 0 1px 2px rgba(0, 0, 0, .4);--elevation-2: 0 4px 12px rgba(0, 0, 0, .5)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}body{margin:0;background:var(--bg);color:var(--text-1);font-family:var(--font-sans)}.skip-link{position:absolute;left:var(--space-2);top:-100px;z-index:100;padding:var(--space-3) var(--space-4);background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius-sm)}.skip-link:focus{top:var(--space-2)}.btn{min-height:44px;min-width:44px;padding:0 var(--space-4);background:var(--surface);color:var(--text-1);border:1px solid var(--line-input);border-radius:var(--radius-sm);font:inherit;cursor:pointer}.btn[aria-disabled=true]{color:var(--text-3);cursor:not-allowed}.state{padding:var(--space-5)}.hint{color:var(--text-2);margin-left:var(--space-2)}.offline-banner{padding:var(--space-3) var(--space-4);background:var(--amber-soft);color:var(--amber);border-bottom:1px solid var(--amber-line)}body{line-height:1.5}*,*:before,*:after{box-sizing:border-box}h1{font-size:1.5rem;line-height:1.3;letter-spacing:-.025em;margin-block:0 1rem}h2{font-size:1.125rem;line-height:1.4;margin-block:1.25rem .75rem}h3{font-size:1rem;line-height:1.4}a{color:var(--accent-strong);text-underline-offset:3px}button,input,select,textarea{font:inherit;color:inherit}button,.btn{min-height:44px;min-width:44px;padding:.5rem .875rem;border:1px solid var(--line-input);border-radius:var(--radius-sm);background:var(--surface);cursor:pointer}a.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}button:disabled{cursor:not-allowed}input:not([type=checkbox]):not([type=radio]):not([type=range]),select,textarea{max-width:100%;min-height:44px;padding:.5rem .75rem;background:var(--surface);border:1px solid var(--line-input);border-radius:var(--radius-sm)}textarea{resize:vertical}.btn-primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent);font-weight:700}.ui-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2)}.ui-card{padding:var(--space-4);border:1px solid var(--line-2);border-radius:var(--radius-md);background:var(--surface)}.ui-metadata{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-4);color:var(--text-2);font-size:.875rem}.ui-chip{display:inline-flex;align-items:center;gap:var(--space-1);width:fit-content;max-width:100%;padding:2px 8px;border-radius:var(--radius-full);background:var(--sunken);color:var(--text-2);font-size:.75rem;font-weight:600}.ui-chip[data-tone=success]{background:var(--accent-soft);color:var(--accent-strong)}.ui-chip[data-tone=warning]{background:var(--amber-soft);color:var(--amber)}.ui-chip[data-tone=error]{background:var(--red-soft);color:var(--red)}