:root{--paper:#f2efe8;--secondary:#b4b6b1;--bronze:#d5b88a;--panel:#1d2224;--muted:#b4b6b1;--accent:#d5b88a}
html,body{background:#141718;color:var(--paper)}
body{font-size:18px}button,input,select,textarea{border-radius:6px}button{min-height:44px}button.primary{background:#d5b88a;color:#171b1a;border-color:transparent}button.primary:hover{background:#e6ca9e}
.auth-gate nav,.auth-gate .display-settings,.auth-gate #account-entry,.auth-gate #sync-note{display:none}
.auth-gate header{border:0}.auth-gate main{max-width:1320px;padding-top:15px}
.auth-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(40px,7vw,100px);align-items:start;margin:28px auto 60px}
.auth-story{padding:40px 0}.auth-story h1{font-size:clamp(40px,4.6vw,64px);line-height:1.28;font-weight:600;letter-spacing:-1px;margin:24px 0}.auth-story h1 em{font-style:normal;color:var(--bronze)}
.auth-story>p{font-size:20px;line-height:1.85;max-width:39ch;color:var(--secondary)}
.auth-example{max-width:410px;padding:24px 28px;margin-top:36px;border-inline-start:2px solid var(--bronze);background:#1e2424;border-radius:5px}.auth-example>span{display:block;font-size:16px;color:var(--secondary)}.auth-example>b{display:block;font:40px Georgia,serif;letter-spacing:6px;margin:14px 0 7px;text-align:right;color:#e0d2b8}.auth-example>strong{font-size:23px}.auth-example p{font-size:16px;margin:10px 0 0;line-height:1.8}.auth-story .auth-footnote{font-size:14px;margin-top:24px}
.auth-card{background:#1d2224;border:1px solid #ffffff12;border-radius:8px;padding:34px 36px;box-shadow:0 16px 60px #0000001a}.auth-card h2{font-size:31px;margin:26px 0 8px}.auth-card>p{font-size:16px;line-height:1.7}
.auth-tabs{display:flex;border-bottom:1px solid #ffffff18;gap:24px}.auth-tabs button{border:0;background:none;border-radius:0;padding:8px 0 13px;color:#afb5b5;font-size:17px}.auth-tabs .selected{border-bottom:2px solid var(--bronze);color:#f2efe8}
.auth-card label,.account-dialog form>label{display:block;margin:18px 0 7px;font-size:17px;color:#e9e7df}
.auth-card input:not([type=checkbox]),.account-dialog input:not([type=checkbox]),.account-dialog textarea,.account-dialog select{display:block;width:100%;border:1px solid #ffffff29;background:#14191b;color:var(--paper);min-height:48px;padding:10px 13px;font:inherit;border-radius:5px;box-sizing:border-box}
.auth-card small{display:block;color:#aab4b6;font-size:13px;line-height:1.7;margin:7px 0 10px}.password-field{display:flex;align-items:stretch;background:#14191b;border:1px solid #ffffff29;border-radius:5px}.password-field input{border:0!important;min-width:0;flex:1;background:none!important}.password-field button{border:0;background:none;border-inline-start:1px solid #ffffff15;border-radius:0;font-size:13px;padding-inline:12px;color:var(--bronze)}
.auth-card .check-label,.account-dialog .check-label{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.8;margin:20px 0}.check-label input{width:18px;height:18px;min-height:18px;margin:4px 0 0;accent-color:var(--bronze);flex:none}
.text-button{background:none;border:0;padding:0;min-height:24px;color:var(--bronze);text-decoration:underline;text-underline-offset:4px}.recover-link{margin:20px 0;display:block}.wide{width:100%;min-height:49px}.guest-entry{display:block;width:100%;margin-top:20px;background:transparent;border-color:#ffffff26}.account-note{font-size:13px!important;line-height:1.8;color:#b1b9b9!important;margin:18px 0 0}.form-status{min-height:23px;font-size:15px;color:#e0bc7e;margin:12px 0}.form-error{color:#f6b5a8}
.account-dialog{width:min(620px,calc(100vw - 32px));max-height:90dvh;padding:30px;background:#1d2224;color:var(--paper);border:1px solid #ffffff28;border-radius:8px;overflow:auto}.account-dialog::backdrop{background:#090d10bf;backdrop-filter:blur(4px)}.dialog-heading{display:flex;justify-content:space-between;gap:15px;align-items:start;margin-bottom:18px}.dialog-heading h2{font-size:27px}.close-dialog{width:42px;height:42px;flex:none;font-size:27px;padding:0}.account-dialog p{font-size:16px;line-height:1.9}.recovery-code{display:block;text-align:center;background:#111719;border:1px dashed #d5b88a65;padding:20px 15px;margin-block:22px;white-space:normal;overflow-wrap:anywhere;font-size:22px;line-height:1.7;color:#f0d7ae;user-select:all}
.account-identity{display:flex;gap:16px;align-items:center}.account-identity strong{font-size:23px}.account-identity p{margin:0;color:var(--secondary)}.avatar-letter{display:grid;place-items:center;height:54px;width:54px;background:#d5b88a19;border:1px solid #d5b88a44;border-radius:6px;font-size:29px;color:var(--bronze)}.account-actions{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:20px 0}.account-actions button{font-size:15px}.account-section{border-top:1px solid #ffffff18;padding:18px 0}.account-section summary{cursor:pointer;font-size:18px}.account-section form{margin-top:10px}.account-section [role=status]{min-height:24px;color:#edc89a}.danger-zone summary{color:#f2b2a6}.danger-button{border-color:#a05d51;background:#63382f;color:#ffe9e3}.privacy-copy p{margin-bottom:18px}
.account-header{display:flex;align-items:center;gap:10px}#account-entry{font-size:15px;border-color:#d5b88a66;color:#e4d0af;white-space:nowrap}#sync-note{display:block;margin:6px auto 0;padding:5px 4.2%;max-width:1550px;text-align:right;border:0;background:none;color:#a9b9b4;font-size:12px;min-height:30px}.student-welcome{display:flex;align-items:center;gap:12px;margin-bottom:20px}.student-welcome b{font-size:21px}.student-welcome span{font-size:14px;color:var(--secondary)}
.editorial-example{margin:0;padding:34px;background:#202827;border:1px solid #ffffff12;border-radius:7px;min-height:310px;display:flex;flex-direction:column;justify-content:center}.editorial-example .example-label{color:#a6bbb1;font-size:15px}.editorial-example h2{font-size:30px;line-height:1.55;margin:16px 0}.example-equation{display:flex;gap:15px;align-items:center;justify-content:space-between;margin:12px 0 22px}.example-equation strong{font:52px Georgia,serif;color:#e4d0af}.example-equation span{display:block;font-size:17px}.example-equation small{font-size:13px;color:#9db3a6}.editorial-example p{margin:0;font-size:16px;color:#c3cec6}.lesson-feedback{margin-top:20px;display:flex;align-items:center;gap:15px;border-top:1px solid #ffffff10;padding-top:16px}.lesson-feedback button{font-size:14px}.lesson-feedback span{font-size:13px;color:#b5beba}.micro-note{color:#b3c0b9!important}.tutor-layout .explain{font-size:24px}.auth-card input:focus-visible,.account-dialog input:focus-visible,.account-dialog textarea:focus-visible,.account-dialog select:focus-visible{outline:2px solid var(--bronze);outline-offset:3px}
@media(max-width:1080px){header{flex-wrap:wrap;height:auto;min-height:96px;padding-block:15px}.account-header{margin-right:auto}.auth-layout{gap:38px}.auth-card{padding:27px}.auth-story{padding-top:28px}header nav{order:3;width:100%;justify-content:center}.auth-gate header nav{display:none}}
@media(max-width:760px){.auth-layout{display:flex;flex-direction:column;gap:20px;margin-top:8px}.auth-story{padding:8px 0}.auth-story h1{font-size:38px;line-height:1.35;margin:12px 0}.auth-story>p{font-size:16px;margin:0}.auth-example,.auth-footnote{display:none}.auth-card{width:100%;padding:24px 20px}.auth-card h2{font-size:27px}.auth-gate main{padding-top:0}.auth-gate header{min-height:78px}.account-dialog{padding:23px 20px}.account-actions{grid-template-columns:1fr}.auth-card label{margin-top:14px}.account-header{gap:7px}.account-header #account-entry{font-size:13px;padding:8px 11px}.editorial-example{min-height:240px;padding:24px}.editorial-example h2{font-size:26px}.example-equation strong{font-size:42px}.lesson-feedback{align-items:start;flex-direction:column;gap:5px}.student-welcome{flex-wrap:wrap}.tutor-layout .explain{font-size:21px;line-height:1.95}.steps span{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:0.01ms!important;transition-duration:0.01ms!important}}

.auth-gate .tools{display:none}.example-equation>div{max-width:38%}

.auth-gate .account-header{display:none!important}.account-dialog input[type=file]{font-size:14px;max-width:100%}