:root{color-scheme:light;--paper:#faf7ef;--ink:#443724;--muted:#786b55;--line:#e9dfcc;--accent:#936719;--wash:#f6efe1;--gold:#dfb64f;--gold-line:#d2a53e;--gold-ink:#3e2c0f}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:radial-gradient(ellipse at 95% 0%,#f3dfa466,transparent 38%),var(--paper);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}header{min-height:86px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:22px;padding:18px max(24px,calc((100vw - 1100px)/2))}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:750;white-space:nowrap;text-decoration:none}.brand small{font-size:10px;letter-spacing:2px;font-weight:500}.mark{background:var(--gold);color:var(--gold-ink);border-radius:10px 10px 10px 0;padding:0 10px;font-size:25px}#identity{margin-left:auto;font-size:13px}main{max-width:1100px;margin:auto;padding:0 24px 64px}a{color:inherit;text-underline-offset:4px}h1{font-family:Georgia,"Songti SC",serif;font-size:clamp(40px,6vw,68px);line-height:1.3;font-weight:600;letter-spacing:-2px;margin:20px 0}h2{line-height:1.5;margin:8px 0 18px;font-size:25px}p{margin:10px 0 18px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--accent)}.lead{font-family:Georgia,serif;font-style:italic;font-size:23px}.hero,.login{display:grid;grid-template-columns:1.15fr 1fr;gap:70px;padding:64px 0;align-items:center}.login{min-height:74vh}.hero-note{padding:32px 36px;border-left:2px solid var(--accent);background:#fffef8}.hero-note>span{font-size:12px;letter-spacing:2px}.hero-note p{font:italic 27px/1.7 Georgia,serif}.hero-note small{font-size:12px}.card{background:#fffefb;border:1px solid var(--line);padding:32px;border-radius:22px;margin:26px 0}.login .card{padding:36px}.muted,small{color:var(--muted);font-size:13px}label{display:block;font-size:14px;margin:18px 0 10px}input,select{display:block;width:100%;padding:13px 14px;border:1px solid #ead9b6;border-radius:9px;background:#fffefa;font:inherit;color:var(--ink);margin-top:7px}button{cursor:pointer;background:var(--gold);color:var(--gold-ink);border:1px solid var(--gold-line);border-radius:10px;padding:12px 20px;font:600 14px/1.5 system-ui;transition:background .15s}button:hover{background:#ebc66c;border-color:#c39530;color:#35260c}button:disabled{background:#ecdbb1;border-color:#e2c990;color:#78643c;cursor:wait}.secondary,.quiet{background:transparent;color:#685736;border-color:#ebdbbc}.secondary:hover,.quiet:hover{background:var(--wash)}.quiet{padding:7px 10px;font-size:12px}.login button{width:100%;margin:16px 0}.login button span{float:right}.login small{display:block;text-align:center}.tabs{display:flex;gap:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;font-size:14px}.tabs a{text-decoration:none}.tabs a:hover{text-decoration:underline}.section-head{display:flex;align-items:center;justify-content:space-between;gap:18px}.tag{display:inline-block;border-radius:30px;background:var(--wash);padding:4px 12px;font-size:12px;white-space:nowrap}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.source{border-top:1px solid var(--line);padding-top:18px;font-size:12px;color:var(--muted)}#message:empty{display:none}#message{position:sticky;top:8px;z-index:5;background:#fff7de;padding:12px 18px;border:1px solid #dfc576;border-radius:8px;margin-top:12px}progress{width:100%;height:7px;accent-color:var(--accent);margin:14px 0 28px}fieldset{border:0;padding:0;margin:22px 0}legend{font-size:13px;color:var(--muted)}#options{display:grid;gap:12px;margin-top:10px}.option{display:flex;align-items:flex-start;gap:14px;border:1px solid var(--line);border-radius:8px;padding:15px;margin:0;cursor:pointer}.option:has(input:checked){border-color:#95773b;background:var(--wash)}.option input{width:18px;height:18px;flex-shrink:0;margin-top:5px;accent-color:var(--accent)}.option span{display:block}.english{font-size:20px;color:#6e5c38}.option .en{font-size:14px;color:var(--muted)}.feedback{margin:24px 0;padding:22px;border:1px solid #dfc576;border-radius:8px;background:#fff7de}.feedback.wrong{border-color:#edc1af;background:#fff1ed}.feedback p{font-size:15px}.totals{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.metric{border-top:2px solid #bf9e5d;padding:20px;background:var(--wash)}.metric strong{display:block;font:36px Georgia,serif}.points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.point{border:1px solid var(--line);padding:18px;border-radius:8px;font-size:14px}.point p{margin:4px 0;font-size:12px;color:var(--muted)}#progress{padding:30px 0}.record{display:flex;justify-content:space-between;align-items:center;gap:15px;border-bottom:1px solid var(--line);padding:16px 0;font-size:14px}.record:last-child{border:0}details{padding:16px 0;border-bottom:1px solid var(--line)}summary{cursor:pointer;font-weight:600}details p{font-size:14px;margin-top:14px}footer{border-top:1px solid var(--line);padding:25px max(24px,calc((100vw - 1050px)/2));font-size:11px;letter-spacing:1px;display:flex;justify-content:space-between;gap:20px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #a8752e;outline-offset:3px}section{scroll-margin-top:30px}#complete{text-align:center;padding:40px 0}#result{font:36px Georgia,serif}#fill{margin-bottom:20px}@media(max-width:750px){header{flex-wrap:wrap;gap:10px}.brand small{display:none}#identity{font-size:11px}.hero,.login{grid-template-columns:1fr;gap:15px;padding:30px 0}.hero-note{padding:20px}.hero-note p{font-size:22px}.card{padding:22px}.tabs{gap:18px;font-size:13px;overflow:auto}.points{grid-template-columns:repeat(2,1fr)}.totals{gap:8px}.metric{padding:12px}.metric strong{font-size:28px}.section-head{flex-wrap:wrap}.record{align-items:flex-start}footer{flex-wrap:wrap}.english{font-size:18px}}@media(max-width:430px){.points{grid-template-columns:1fr}.actions button{width:100%}main{padding:0 16px 40px}.card{padding:18px}.login .card{padding:24px}.brand{font-size:17px}}

.course-sections{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}.course-card{padding:30px;border:1px solid var(--line);background:#faf9f3;border-radius:22px}.course-card.epi{background:#faf5ec}.course-card h2{font:32px Georgia,serif;margin-bottom:6px}.course-card h3{font-size:17px;margin:8px 0}.course-card p{font-size:14px}.course-card button[aria-pressed="false"]{background:transparent;color:var(--ink)}.course-card button[aria-pressed="true"]{outline:2px solid var(--accent);outline-offset:3px}.course-progress .points{padding-top:20px}.course-progress{margin-top:16px}@media(max-width:650px){.course-sections{grid-template-columns:1fr}.course-card{padding:22px}}

/* Match the main site: cream paper, warm gold controls and cocoa text. */
header{background:#f5f5eff2;border-color:#f0e4cd}.brand small{color:var(--muted)}
.card{box-shadow:0 5px 22px #41372203}.hero-note{border:1px solid #f0e4cb;border-left:2px solid #bf9e5d;border-radius:5px 18px 18px 18px;box-shadow:0 15px 40px #4f42280c}.hero-note p{color:#91691f}
.tabs{gap:10px}.tabs a{padding:7px 14px;border-radius:30px;color:#775315}.tabs a:hover{background:#f3e8c8;text-decoration:none}
.tag,#identity:not(:empty){background:#f8edce;color:#795c23;border:1px solid #e7d49d}#identity:not(:empty){padding:5px 12px;border-radius:30px}
.option{background:#fffefa}.option:hover{background:#f8f2e6;border-color:#c4a76c}.option:has(input:checked){box-shadow:0 0 0 1px #95773b}
.feedback strong{color:#795615}.feedback.wrong strong{color:#a33c23}.metric{border-radius:12px}.metric strong,#result{color:#775c20}.point{background:#fffefb}.course-card h2{color:#5c4825}
.course-card button[aria-pressed="false"]:hover{background:#f3e8c8}.course-card button[aria-pressed="true"]:focus-visible{outline:3px solid #a8752e}
progress{appearance:none;border:0;border-radius:8px;overflow:hidden;background:#f4ead7}progress::-webkit-progress-bar{background:#f4ead7}progress::-webkit-progress-value{background:#aa8844}progress::-moz-progress-bar{background:#aa8844}
/* The private entrance follows the main site's dark brown and gold palette. */
body:has(#login:not([hidden])){color-scheme:dark;--ink:#eee5d4;--muted:#b8a682;--line:#b39b6740;--accent:#dfb64f;background:radial-gradient(ellipse at 50% 40%,#6a502d66,transparent 58%),radial-gradient(ellipse at 16% 100%,#60451c33,transparent 50%),#17130d;min-height:100vh}
body:has(#login:not([hidden])) header{background:#17130d99;border-color:var(--line)}
.login .card{background:#211b12bb;border-color:var(--line);box-shadow:0 0 80px #b8954e0c}.login .lead{color:var(--muted)}.login label{color:#d6c7a7}.login input{background:#211b12bb;border-color:#b39b6766;color:#f4e9d3}.login input:autofill{-webkit-text-fill-color:#f4e9d3;box-shadow:0 0 0 1000px #302615 inset}
body:has(#login:not([hidden])) #message{background:#302615;border-color:#b39b6766;color:#f4e9d3}
@media(max-width:750px){.tabs{gap:4px}.tabs a{padding:7px 10px;white-space:nowrap}.card,.course-card{border-radius:18px}}
@media(prefers-reduced-motion:reduce){button{transition:none}}

.admin-users{margin-top:20px}.admin-user{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr) auto;align-items:center;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.admin-user p{margin:4px 0}.admin-user>div{min-width:0;overflow-wrap:anywhere}.admin-user button[aria-pressed="true"]{background:#f3e8c8;border-color:#95773b}#admin-detail{border-top:2px solid #bf9e5d;margin-top:32px;padding-top:26px;overflow-wrap:anywhere}#admin-detail h3{margin:26px 0 16px}#admin-detail>.totals{margin-bottom:24px}#admin-search{max-width:520px}.tabs{flex-wrap:wrap}#admin-link{background:#f3e8c8;font-weight:600}@media(max-width:750px){.admin-user{grid-template-columns:minmax(0,1fr)}.admin-user button{justify-self:start}#admin-detail .totals{grid-template-columns:1fr}.admin-user{gap:8px}}

/* Keep the course and practice destinations distinct on the subject card. */
.course-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:20px 0 12px}
.course-open{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 20px;border:1px solid var(--gold-line);border-radius:10px;background:var(--gold);color:var(--gold-ink);font:600 14px/1.5 system-ui;text-decoration:none}
.course-open:hover{background:#ebc66c;border-color:#c39530}.course-card .course-actions button{background:transparent;outline:none}.course-card .course-actions button:hover{background:var(--wash)}.course-card .course-actions button:focus-visible{outline:3px solid #a8752e;outline-offset:3px}
.course-card .course-caption{font-size:12px;color:var(--muted);margin-bottom:0}.course-caption a{white-space:nowrap}.tabs .course-nav{background:#f3e8c8;font-weight:700}
@media(max-width:430px){.course-actions{align-items:stretch;flex-direction:column}.course-actions>*{width:100%;text-align:center}}