:root {
  color-scheme: light;
  --page: #faf8f4;
  --surface: #fffefc;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --ink-3: #898781;
  --grid: #e5e1d8;
  --baseline: #c3c2b7;
  --series: #eb6834;
  --cta: #d95926;
  --track: #fde9e0;
  --border: rgba(11, 11, 11, 0.1);
  --badge-bg: #fbe4d8;
  --badge-ink: #a63d10;
  --shadow: 0 1px 3px rgba(11, 11, 11, 0.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --ink-3: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --series: #d95926;
    --cta: #d95926;
    --track: #3f241b;
    --border: rgba(255, 255, 255, 0.1);
    --badge-bg: #43241a;
    --badge-ink: #f2a488;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--page);
  color: var(--ink);
  line-height: 1.65;
}

main { max-width: 720px; margin: 0 auto; padding: 16px 16px 40px; }

.screen { display: none; }
.screen.active { display: block; animation: fadein .3s ease; }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .screen.active { animation: none; }
}

.site-header { max-width: 720px; margin: 0 auto; padding: 20px 16px 0; }
.logo { font-weight: 700; font-size: 17px; }
.logo-mark { margin-right: 8px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  margin-top: 16px;
  box-shadow: var(--shadow);
}

.eyebrow { color: var(--ink-3); font-size: 13px; margin: 0 0 6px; letter-spacing: .04em; }
h1 { font-size: 30px; line-height: 1.3; margin: 0 0 12px; }
.lead { color: var(--ink-2); margin: 0 0 22px; }

.field-label { color: var(--ink-3); font-size: 13px; margin: 0 0 8px; }
.exam-select { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }
.exam-card {
  font: inherit; cursor: pointer; text-align: center;
  background: var(--surface); color: var(--ink);
  border: 2px solid var(--border); border-radius: 14px;
  padding: 16px 10px;
  transition: border-color .12s ease, background .12s ease;
}
.exam-card .exam-ico { display: block; font-size: 30px; margin-bottom: 4px; }
.exam-card b { display: block; font-size: 15px; }
.exam-card small { color: var(--ink-3); font-size: 12px; }
.exam-card.selected { border-color: var(--series); background: color-mix(in srgb, var(--series) 8%, var(--surface)); }

.name-input {
  font: inherit; width: 100%;
  background: var(--surface); color: var(--ink);
  border: 1.5px solid var(--border); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 18px;
}
.name-input:focus { outline: none; border-color: var(--series); }

.notice { list-style: none; margin: 0 0 22px; padding: 14px 16px; border: 1px dashed var(--grid); border-radius: 12px; color: var(--ink-2); font-size: 14px; }
.notice li { margin: 4px 0; }
.notice b { color: var(--ink); }

.btn {
  font: inherit; cursor: pointer; border-radius: 12px;
  padding: 12px 20px; border: 1px solid transparent;
  transition: transform .1s ease, background .15s ease;
}
.btn:active { transform: scale(.98); }
.btn-lg { width: 100%; font-size: 19px; font-weight: 700; padding: 15px 20px; }
.btn-primary { background: var(--cta); color: #fff; font-weight: 700; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-outline { background: transparent; color: var(--ink-2); border-color: var(--border); }
.btn-outline:hover { background: var(--page); }
.btn-ghost { background: transparent; color: var(--ink-3); padding: 8px 12px; }
.btn-ghost:disabled { opacity: .35; cursor: default; }

.disclaimer { color: var(--ink-3); font-size: 12.5px; margin: 16px 0 0; }

/* 考场 */
.exam-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; gap: 8px; }
.quiz-subject { font-weight: 700; font-size: 15px; }
.quiz-candidate { color: var(--ink-3); font-size: 12.5px; font-variant-numeric: tabular-nums; text-align: right; }
.quiz-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.quiz-count { color: var(--ink-3); font-size: 13px; font-variant-numeric: tabular-nums; }
.dim-tag { font-size: 13px; color: var(--badge-ink); background: var(--badge-bg); border-radius: 999px; padding: 2px 12px; }
.progress { height: 8px; border-radius: 4px; background: var(--track); overflow: hidden; }
.progress-fill { height: 100%; background: var(--series); border-radius: 0 4px 4px 0; transition: width .25s ease; }

.quiz-question { font-size: 20px; line-height: 1.55; margin: 22px 0 18px; }
.options { display: grid; gap: 10px; }
.options-binary { grid-template-columns: 1fr 1fr; }
.option {
  text-align: left; font: inherit; line-height: 1.55; cursor: pointer;
  background: var(--surface); color: var(--ink);
  border: 1.5px solid var(--border); border-radius: 12px;
  padding: 13px 16px 13px 14px;
  display: flex; gap: 10px; align-items: center;
  transition: border-color .12s ease, background .12s ease;
}
.option:hover { border-color: var(--baseline); }
.option .opt-key {
  flex: none; width: 24px; height: 24px;
  border: 1.5px solid var(--baseline); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: var(--ink-3);
}
.option.selected { border-color: var(--series); background: color-mix(in srgb, var(--series) 9%, var(--surface)); }
.option.selected .opt-key { background: var(--series); border-color: var(--series); color: #fff; }
.option-binary { justify-content: center; font-weight: 700; }
.quiz-foot { margin-top: 18px; display: flex; justify-content: space-between; align-items: center; }
.quiz-total { color: var(--ink-3); font-size: 12.5px; }

/* 成绩 */
.hero { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.hero-score { font-size: 64px; font-weight: 700; line-height: 1; letter-spacing: -.02em; }
.hero-side { flex: 1; min-width: 220px; }
.level-badge { display: inline-block; font-weight: 700; font-size: 17px; background: var(--badge-bg); color: var(--badge-ink); border-radius: 999px; padding: 5px 16px; margin-bottom: 8px; }
.level-desc { color: var(--ink-2); margin: 0 0 8px; font-size: 14.5px; }
.breakdown { color: var(--ink-3); font-size: 13px; margin: 0; font-variant-numeric: tabular-nums; }
.hero-caption { color: var(--ink-3); font-size: 12.5px; margin: 14px 0 0; font-variant-numeric: tabular-nums; }

/* 证书 */
.cert {
  position: relative; text-align: center;
  background: #fffdf6; color: #3a2f1e;
  border: 2px solid #c9a86a; border-radius: 10px;
  padding: 12px; margin: 4px;
}
.cert-inner { border: 1px solid #d9c296; border-radius: 6px; padding: 22px 18px 18px; }
.cert-sup { font-size: 10px; letter-spacing: .35em; color: #a08a5e; margin: 0 0 6px; }
.cert-title { font-family: "Kaiti SC", "STKaiti", "KaiTi", serif; font-size: 27px; margin: 0 0 18px; letter-spacing: .08em; }
.cert-line { margin: 8px 0; font-size: 15px; }
.cert-line b { font-size: 18px; }
.cert-score { color: #b3430f; font-size: 24px; }
.cert-motto { color: #8a774f; font-size: 12.5px; margin: 16px 0 14px; }
.cert-foot { display: flex; justify-content: space-between; font-size: 12.5px; color: #6d5c37; border-top: 1px solid #e5d5ae; padding-top: 10px; }
.cert-seal {
  position: absolute; right: 22px; bottom: 52px;
  width: 58px; height: 58px; border: 2.5px solid rgba(179, 67, 15, .8); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: "Kaiti SC", "STKaiti", "KaiTi", serif;
  color: rgba(179, 67, 15, .85); font-size: 20px; font-weight: 700;
  transform: rotate(-14deg);
  pointer-events: none;
}

/* 错题 */
.wrong-item { border-top: 1px solid var(--grid); padding: 14px 0; }
.wrong-item:first-child { border-top: none; padding-top: 0; }
.wrong-q { font-weight: 700; margin: 0 0 6px; font-size: 15px; display: flex; gap: 8px; }
.wrong-type { flex: none; font-size: 11.5px; font-weight: 700; color: var(--badge-ink); background: var(--badge-bg); border-radius: 6px; padding: 1px 8px; margin-top: 3px; }
.wrong-ans { color: var(--ink-2); font-size: 14px; margin: 0 0 6px; }
.wrong-ans b { color: var(--ink); }
.wrong-why { color: var(--ink-3); font-size: 13.5px; margin: 0; padding-left: 12px; border-left: 2px solid var(--grid); }
.wrong-none { color: var(--ink-2); margin: 0; }

h3 { font-size: 17px; margin: 0 0 14px; }
#radar-holder { max-width: 430px; margin: 0 auto; }
#radar-holder svg { width: 100%; height: auto; display: block; }
.radar-label { font-size: 13px; fill: var(--ink-2); }
.radar-tick { font-size: 10px; fill: var(--ink-3); font-variant-numeric: tabular-nums; }
.chart-note { color: var(--ink-3); font-size: 12.5px; margin: 10px 0 0; text-align: center; }
.swatch { display: inline-block; width: 16px; height: 3px; border-radius: 2px; background: var(--baseline); vertical-align: middle; margin-right: 6px; }

.bar-row { display: grid; grid-template-columns: 104px 1fr 42px; gap: 12px; align-items: center; margin: 11px 0; }
.bar-name { font-size: 14px; color: var(--ink-2); display: flex; align-items: center; gap: 6px; }
.bar-track { height: 16px; background: var(--track); border-radius: 4px; }
.bar-fill { height: 100%; background: var(--series); border-radius: 0 4px 4px 0; min-width: 2px; }
.bar-val { font-size: 14px; font-variant-numeric: tabular-nums; color: var(--ink-2); text-align: right; }

.table-view { margin-top: 14px; font-size: 14px; }
.table-view summary { color: var(--ink-3); cursor: pointer; font-size: 13.5px; }
.table-view table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.table-view th, .table-view td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--grid); font-variant-numeric: tabular-nums; }
.table-view th { color: var(--ink-3); font-weight: 500; font-size: 13px; }
.table-view td:last-child, .table-view th:last-child { text-align: right; }

.advice-card { border-left: 4px solid var(--series); }
.advice-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.advice-head .dim-ico { width: 34px; height: 34px; font-size: 16px; border-radius: 10px; background: var(--track); display: flex; align-items: center; justify-content: center; flex: none; }
.advice-head b { font-size: 16px; }
.advice-score { margin-left: auto; font-size: 14px; color: var(--badge-ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.advice-card ul { margin: 0; padding-left: 20px; color: var(--ink-2); font-size: 14.5px; }
.advice-card li { margin: 6px 0; }

.actions-card { display: flex; gap: 12px; flex-wrap: wrap; }
.actions-card .btn { flex: 1; min-width: 130px; }

.site-footer { text-align: center; color: var(--ink-3); font-size: 12.5px; padding: 8px 16px 32px; }

.viz-tip {
  position: fixed; z-index: 10; pointer-events: none;
  background: var(--ink); color: var(--page);
  font-size: 12.5px; padding: 4px 10px; border-radius: 6px;
  transform: translate(-50%, calc(-100% - 10px));
  white-space: nowrap;
}

@media (max-width: 480px) {
  .card { padding: 22px 18px; }
  h1 { font-size: 26px; }
  .hero { gap: 12px; }
  .hero-score { font-size: 54px; }
  .bar-row { grid-template-columns: 88px 1fr 38px; gap: 8px; }
  .quiz-question { font-size: 18.5px; }
  .exam-select { grid-template-columns: 1fr; }
  .cert-seal { right: 12px; bottom: 46px; }
}

/* 广告位：AdSense 过审后把广告代码粘进 div 内部，虚线和占位文字自动消失 */
.ad-slot { margin: 22px 0; min-height: 100px; border: 1px dashed var(--grid); border-radius: 12px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.ad-slot:empty::after { content: "广告位 · AdSense 审核通过后粘贴广告代码"; color: var(--ink-3); font-size: 12.5px; }
.ad-slot:not(:empty) { border: none; min-height: 0; }

/* 文章页 */
.article-main { max-width: 720px; margin: 0 auto; padding: 16px 16px 40px; }
.article { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px 26px; box-shadow: var(--shadow); }
.article h1 { font-size: 27px; margin: 0 0 8px; line-height: 1.35; }
.article-meta { color: var(--ink-3); font-size: 13px; margin: 0 0 18px; }
.article h2 { font-size: 19px; margin: 26px 0 10px; }
.article p { color: var(--ink-2); font-size: 15.5px; margin: 8px 0; }
.article ul { padding-left: 20px; margin: 8px 0; }
.article li { color: var(--ink-2); font-size: 15.5px; margin: 7px 0; }
.article b, .article strong { color: var(--ink); }
.article-cta { margin-top: 28px; text-align: center; }
.article-cta .btn { text-decoration: none; display: inline-block; }

.logo { text-decoration: none; color: var(--ink); }
.dim-hint { color: var(--ink-3); font-size: 13px; margin: 14px 0 0; }
.dim-hint a { color: var(--badge-ink); text-decoration: none; }
.dim-hint a:hover { text-decoration: underline; }

.site-links { display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: center; margin-bottom: 8px; }
.site-links a { color: var(--ink-3); text-decoration: none; font-size: 12.5px; }
.site-links a:hover { color: var(--ink-2); }