/* Level guide: one column of reading, under the same dusk cover as the exam pages. */

.cover { position: relative; isolation: isolate; }
.cover-art { position: absolute; inset: 0 0 auto; height: 440px; z-index: -1; overflow: hidden; }
.cover-art img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 88%; opacity: .75; }
.cover-art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgb(16 28 38 / 0.3), var(--paper) 96%); }
.cover-inner { display: grid; gap: 14px; padding-block: 40px 8px; justify-items: center; text-align: center; }
.levels { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 18px; }
.lv { padding: 6px 12px; border-radius: var(--r-chip); background: rgb(24 41 55 / 0.8); color: var(--ink-muted); text-decoration: none; font: 800 13px var(--body); }
.lv:hover { color: var(--ink); }
.lv.on { background: var(--accent); color: var(--on-accent); }
.cover-zh { color: var(--highlight); font-size: 15px; letter-spacing: .08em; }
.cover h1 { font-size: clamp(30px, 4.4vw, 48px); max-width: 16em; }
.cover .lede { max-width: 36em; font-size: clamp(17px, 1.6vw, 19px); color: #d7d9d6; }
.cover-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 10px; }

.facts { list-style: none; padding: 0; margin: 40px auto 0; max-width: 760px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--card-edge); border-radius: var(--r-card); background: var(--surface); overflow: hidden; }
.facts li { padding: 18px 20px; display: grid; gap: 2px; align-content: start; }
.facts li + li { border-left: 1px solid var(--line); }
.facts b { font: 800 26px/1.1 var(--display); color: var(--ink); }
.facts span { color: var(--ink-muted); font-size: 14px; }
@media (max-width: 640px) {
  .facts { grid-template-columns: 1fr; }
  .facts li + li { border-left: 0; border-top: 1px solid var(--line); }
}

.guide { max-width: 760px; padding-top: 16px; }
.guide section { padding-top: 48px; }
.guide h2 { font-size: clamp(24px, 3vw, 30px); margin-bottom: 14px; }
.guide p + p { margin-top: 12px; }
.guide .muted { font-size: 15px; }

.paper { margin-top: 24px; }
.paper + .paper { margin-top: 28px; }
.paper h3 { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--k); }
.paper h3 .hz { font-family: var(--hanzi); font-weight: 700; }
.paper h3 small { font: 700 14px var(--body); color: var(--ink-muted); margin-left: auto; }
.paper ol { list-style: none; margin: 0; padding: 0; }
.paper li { display: grid; grid-template-columns: 76px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.paper .pn { font: 800 14px var(--body); color: var(--ink-muted); }
.paper .pn .hz { display: block; font-weight: 400; font-size: 13px; }
.paper li p { margin: 0; }
.paper .q { color: var(--ink-muted); font-size: 14px; }
.paper-note { margin-top: 10px; color: var(--ink-muted); font-size: 14px; }

.tips { margin: 0; padding: 0; list-style: none; counter-reset: tip; display: grid; gap: 14px; }
.tips li { counter-increment: tip; display: grid; grid-template-columns: 36px 1fr; gap: 12px; }
.tips li::before { content: counter(tip); width: 28px; height: 28px; border-radius: var(--r-chip); background: var(--accent-soft); color: var(--accent); font: 800 15px/28px var(--display); text-align: center; }

.app-card { margin-top: 56px; display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start; background: var(--accent-soft); border: 1.5px solid rgb(242 182 128 / 0.35); border-radius: var(--r-card); padding: 24px; }
.app-card img { width: 56px; height: 56px; border-radius: 14px; }
.app-card h2 { font-size: 24px; margin-bottom: 8px; }
.app-card ul { margin: 12px 0 18px; padding-left: 20px; display: grid; gap: 6px; }
@media (max-width: 600px) { .app-card { grid-template-columns: 1fr; } }

.faq-list { display: grid; gap: 10px; }
.faq-list details { background: var(--surface); border: 1px solid var(--card-edge); border-radius: var(--r-tile); padding: 16px 18px; }
.faq-list summary { font-weight: 800; cursor: pointer; }
.faq-list details p { margin-top: 10px; color: var(--ink-muted); }

.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); font-weight: 700; }
.pager a { text-decoration: none; }