:root { color-scheme: light; --bg:#fbf6ee; --surface:#fff; --ink:#2b211b; --muted:#6b5a4c; --accent:#8a3b12; --line:#e6d9c6; --band:#f3e9da; --good:#246044; --bad:#9c3434; }
*,*::before,*::after { box-sizing:border-box; }
[hidden] { display:none !important; }
html { -webkit-text-size-adjust:100%; }
body { margin:0; background:var(--bg); color:var(--ink); font:1rem/1.8 system-ui,-apple-system,"Microsoft JhengHei",sans-serif; overflow-wrap:anywhere; }
button,a { -webkit-tap-highlight-color:transparent; }
button { font:inherit; cursor:pointer; }
button:disabled { cursor:default; }
a { color:var(--accent); text-underline-offset:.25em; }
:focus-visible { outline:3px solid var(--accent); outline-offset:4px; }
.wrap { width:min(100% - 40px, 880px); margin-inline:auto; }
.skip { position:absolute; left:-9999px; }
.skip:focus { left:16px; top:8px; padding:8px 16px; background:#fff; z-index:5; }
.masthead { border-bottom:1px solid var(--line); }
.masthead-row { display:flex; justify-content:space-between; align-items:center; gap:12px; padding-block:18px; }
.brand { font-weight:800; letter-spacing:.18em; }
.edition,.eyebrow,.small { color:var(--muted); font-size:.85rem; }
.edition { letter-spacing:.08em; }
.intro { display:flex; align-items:center; justify-content:space-between; gap:24px; padding:46px 0 26px; }
.eyebrow { margin:0 0 8px; letter-spacing:.06em; }
h1 { font-family:Georgia,"Noto Serif TC","PMingLiU",serif; font-size:clamp(2rem,6vw,3rem); line-height:1.3; margin:0; letter-spacing:.04em; }
.lede { margin:14px 0 0; color:var(--muted); }
.streak { flex:0 0 150px; padding:16px; text-align:center; border:1px solid var(--line); border-radius:16px; background:var(--band); font-size:.85rem; }
.streak strong { font:600 2.5rem/1.3 Georgia,serif; color:var(--accent); }
.streak small { color:var(--muted); }
.date-row { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:8px; margin-bottom:12px; }
.date-row p { margin:0; font-size:.9rem; }
.tag { display:inline-block; padding:1px 10px; margin-left:8px; border-radius:999px; background:var(--band); color:var(--accent); font-size:.75rem; }
.question-card { padding:32px; border:1px solid var(--line); border-radius:18px; background:var(--surface); box-shadow:0 8px 30px #2b211b08; }
.question-meta { display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-bottom:24px; font-size:.85rem; color:var(--muted); }
.subject { padding:3px 12px; border-radius:6px; background:var(--band); color:var(--accent); font-weight:700; }
h2 { font-size:clamp(1.2rem,3vw,1.5rem); line-height:1.7; margin:6px 0 16px; }
h3 { font-size:1rem; margin:20px 0 8px; }
.options { display:grid; gap:12px; margin-top:24px; }
.option { width:100%; display:flex; gap:16px; align-items:baseline; padding:16px 18px; text-align:left; border:1px solid var(--line); border-radius:10px; background:var(--surface); color:var(--ink); }
.option:hover:not(:disabled) { border-color:var(--accent); background:var(--bg); }
.letter { flex:0 0 24px; font-weight:800; color:var(--accent); }
.option.correct { border-color:var(--good); background:#f0f7f1; }
.option.wrong { border-color:var(--bad); background:#fff2f0; }
.option.selected { box-shadow:inset 4px 0 var(--accent); }
.option-state { display:block; font-size:.8rem; font-weight:700; margin-top:4px; }
.result { margin-top:28px; border-top:1px solid var(--line); padding-top:22px; }
.verdict { font-size:1.2rem; font-weight:800; margin:0 0 8px; }
.result.correct .verdict { color:var(--good); }
.result.wrong .verdict { color:var(--bad); }
.explanation { white-space:pre-wrap; }
.correction { padding:16px 20px; background:var(--band); border-left:4px solid var(--accent); border-radius:6px; }
.correction p { margin:4px 0 0; }
.sources { border-top:1px dashed var(--line); margin-top:24px; }
#source-links { display:flex; flex-wrap:wrap; gap:12px 24px; }
.day-nav { display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; margin:24px 0 16px; }
.day-nav button { padding:10px 20px; border:1px solid var(--accent); border-radius:999px; color:var(--accent); background:transparent; }
.day-nav button.primary { background:var(--accent); color:#fff; }
.day-nav button:disabled { opacity:.4; }
.centered { text-align:center; }
.notice { padding:16px; background:var(--band); }
footer { border-top:1px solid var(--line); padding:24px 0 32px; margin-top:36px !important; text-align:center; font-size:.85rem; }
footer p { margin:4px 0; }
@media (max-width:540px) { .wrap { width:calc(100% - 28px); } .intro { padding-top:28px; gap:14px; } .streak { flex-basis:100px; padding:12px 6px; } .streak strong { font-size:2rem; } .edition { font-size:.7rem; letter-spacing:0; } .question-card { padding:22px 18px; } .option { padding:14px 12px; gap:10px; } .day-nav button { padding:10px 12px; font-size:.9rem; } }

.site-nav { display:flex; flex-wrap:wrap; gap:12px 24px; padding:14px 20px; border-bottom:1px solid var(--line); background:var(--card,#fff); }
.site-nav a { font-size:15px; font-weight:650; }
.blur-preview { filter:blur(4px); user-select:none; pointer-events:none; white-space:pre-wrap; overflow-wrap:anywhere; }
.paid-note { color:var(--muted); font-size:15px; }
.candidate-grid,.paper-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:22px; }
.candidate-grid>div { border:1px solid var(--line); border-radius:10px; padding:16px; }
.boundary h3 { font-size:17px; }
.hero { padding:38px 28px; }
.hero h1 { font-size:clamp(28px,5vw,46px); }
.paper-link { display:block; border:1px solid var(--line); border-radius:10px; padding:22px; text-decoration:none; }
.paper-link strong { display:block; font-size:22px; }
.faq details { padding:12px 0; border-bottom:1px solid var(--line); }
.faq summary { cursor:pointer; font-weight:650; }
.page-note { border-left:4px solid var(--accent); padding:12px 16px; background:var(--bg); }
@media(max-width:650px) { .candidate-grid,.paper-grid { grid-template-columns:1fr; } .hero { padding:24px 18px; } }