:root {
  --blue: #1A3E9A;
  --blue-dark: #0F2566;
  --blue-light: #2C56C8;
  --amber: #FFB21E;
  --gold: #FFDE59;
  --ink: #1B2440;
  --muted: #56607A;
  --paper: #FFFFFF;
  --cream: #FFF8E8;
  --line: #E3E8F3;
  --good: #2FA45A;
  --good-bg: #E7F6EC;
  --bad: #E8473C;
  --bad-bg: #FDECEA;
  --radius: 22px;
  --outline: 3px solid var(--blue-dark);
  --shadow: 0 6px 0 var(--blue-dark), 0 18px 40px rgba(15, 37, 102, .22);
  --font: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font-display: 'Chiron GoRound TC', 'Noto Sans TC', 'PingFang TC', sans-serif;
  --font-logo: 'Mochiy Pop One', 'Chiron GoRound TC', 'Noto Sans TC', sans-serif;
  --font-num: 'Fredoka', 'Bahnschrift', sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  /* 天空漸層加上淡淡的等高線，帶出地圖及考察的感覺 */
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='480' height='480' fill='none' stroke='%231A3E9A' stroke-opacity='.08' stroke-width='2'%3E%3Cpath d='M-20 120c80-60 160 40 240-10s160-70 280 10'/%3E%3Cpath d='M-20 170c90-50 170 50 250 0s170-60 270 20'/%3E%3Cpath d='M-20 330c70-40 150 30 230-20s180-40 290 20'/%3E%3Cpath d='M-20 380c80-30 160 40 240-10s170-40 280 30'/%3E%3Cellipse cx='370' cy='250' rx='60' ry='34'/%3E%3Cellipse cx='370' cy='250' rx='30' ry='15'/%3E%3C/svg%3E"),
    linear-gradient(180deg, #8ED6FF 0%, #C9EEFF 50%, #FFF1CF 100%);
  background-attachment: fixed;
}

button { font: inherit; color: inherit; cursor: pointer; }
.display { font-family: var(--font-display); font-weight: 900; }

/* ---------- 頂欄 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  /* 闊螢幕時標誌及語言掣貼近內容欄（720px），不會走到畫面最右上角 */
  padding: max(12px, env(safe-area-inset-top)) max(16px, calc((100% - 720px) / 2)) 10px;
  /* 捲動時內容在頂欄下方淡出，不會與標誌重疊 */
  background: rgb(142, 214, 255);
}
body[data-screen="title"] .topbar { background: linear-gradient(180deg, rgba(142, 214, 255, .96) 70%, rgba(142, 214, 255, 0)); }
.brand { background: var(--blue-dark); border-radius: 999px; padding: 8px 14px; box-shadow: 0 4px 14px rgba(15, 37, 102, .3); }
.brand img { display: block; height: 20px; width: auto; }
.lang-switch {
  display: flex;
  background: var(--paper);
  border: var(--outline);
  border-radius: 999px;
  padding: 3px;
  box-shadow: 0 3px 0 var(--blue-dark);
}
.lang-btn { border: 0; background: none; border-radius: 999px; padding: 4px 12px; font-weight: 900; font-size: 14px; color: var(--muted); }
.lang-btn.is-on { background: var(--blue); color: #fff; }

/* 題目導航：按數字跳到任何一題；綠色答對、紅色答錯 */
.progress {
  position: sticky;
  top: 58px;
  z-index: 4;
  display: none;
  justify-content: center;
  gap: 5px;
  flex-wrap: wrap;
  padding: 0 12px 14px;
  background: linear-gradient(180deg, rgb(142, 214, 255) 75%, rgba(142, 214, 255, 0));
}
body:not([data-screen="title"]) .progress { display: flex; }
.progress .dot {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 50%;
  border: 2px solid var(--blue-dark);
  background: var(--paper);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  color: var(--blue-dark);
}
.progress .dot.good { background: var(--good); border-color: var(--good); color: #fff; }
.progress .dot.bad { background: var(--bad); border-color: var(--bad); color: #fff; }
.progress .dot.now { background: var(--amber); border-color: var(--blue-dark); color: var(--blue-dark); box-shadow: 0 0 0 2px var(--amber); }

/* ---------- 畫面 ---------- */
.screen { display: none; padding: 6px 16px calc(32px + env(safe-area-inset-bottom)); }
.screen.is-active { display: block; animation: rise .35s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }

.card {
  background: var(--paper);
  border: var(--outline);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  max-width: 720px;
  margin: 0 auto 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--outline);
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 900;
  text-decoration: none;
  transition: transform .1s, box-shadow .1s;
}
.btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--blue-dark) !important; }
.btn-primary { background: var(--amber); color: var(--blue-dark); box-shadow: 0 5px 0 var(--blue-dark); }
.btn-ghost { background: var(--paper); color: var(--blue-dark); box-shadow: 0 5px 0 var(--blue-dark); }
.btn-big { width: 100%; font-size: 19px; padding: 15px 22px; }

/* ---------- 首頁 ---------- */
/* 立體街景只在首頁顯示，位於所有介面之下 */
#world { position: fixed; inset: 0; z-index: 0; width: 100%; height: 100%; display: block; pointer-events: none; }
body:not([data-screen="title"]) #world { display: none; }
.screen { position: relative; z-index: 1; }
/* 標誌在上、說明卡在下，中間留空讓街景露出 */
.title-wrap { width: min(460px, 100%); margin: 0 auto; min-height: calc(100dvh - 80px); display: flex; flex-direction: column; justify-content: space-between; gap: 18px; }
/* 並排版面斷點（1000px）須與 scene.js 的 SIDE_LAYOUT 一致 */
@media (min-width: 1000px) {
  .title-wrap { margin: 0 0 0 7vw; justify-content: center; gap: 22px; }
}
.game-logo { display: flex; flex-direction: column; align-items: center; text-align: center; }
.logo-kicker {
  background: var(--blue);
  color: #fff;
  border: var(--outline);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .06em;
  box-shadow: 0 3px 0 var(--blue-dark);
}
.logo-title { margin: 12px 0 0; line-height: 1; }
.lt {
  position: relative;
  display: inline-block;
  font-family: var(--font-logo);
  font-weight: 400;
  font-size: clamp(38px, 11vw, 72px);
  color: var(--gold);
  -webkit-text-stroke: 9px var(--blue-dark);
  paint-order: stroke fill;
  text-shadow: 0 7px 0 var(--blue-dark);
  letter-spacing: .02em;
}
.lt::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  color: var(--gold);
  -webkit-text-stroke: 0;
  background: linear-gradient(180deg, #FFF3B0 0%, var(--gold) 45%, var(--amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}
.logo-en {
  margin-top: 10px;
  background: var(--blue-dark);
  color: #fff;
  border-radius: 8px;
  padding: 6px 16px;
  font-family: var(--font-num);
  font-weight: 700;
  letter-spacing: .14em;
  font-size: 15px;
  box-shadow: 0 4px 0 rgba(15, 37, 102, .35);
}
.logo-badges { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; justify-content: center; }
.badge {
  background: var(--paper);
  border: var(--outline);
  border-radius: 999px;
  padding: 4px 12px;
  font-weight: 900;
  font-size: 14px;
  box-shadow: 0 3px 0 var(--blue-dark);
}
.badge-amber { background: var(--amber); }
.lt-sub { margin-left: .08em; }
.title-card { width: 100%; text-align: center; }
/* TITUS的挑戰宣言：頭像配對話框 */
.dare { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; text-align: left; }
.dare img { flex: none; width: 58px; height: 58px; border-radius: 50%; border: 3px solid var(--blue-dark); box-shadow: 0 3px 0 var(--blue-dark); }
.dare p {
  position: relative;
  margin: 0;
  padding: 9px 14px;
  border-radius: 16px;
  background: var(--blue-dark);
  color: var(--gold);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.45;
  white-space: pre-line;
}
.dare p::before { content: ''; position: absolute; left: -7px; top: 50%; margin-top: -7px; border: 7px solid transparent; border-left: 0; border-right-color: var(--blue-dark); }
.title-desc { margin: 0 0 14px; line-height: 1.7; font-size: 16px; }
.rules { list-style: none; display: flex; justify-content: center; gap: 8px; margin: 0 0 18px; padding: 0; flex-wrap: wrap; }
/* 手機上精簡說明卡，讓出空間給街景 */
@media (max-width: 600px) {
  .title-card { padding: 16px; }
  .title-desc { font-size: 15px; margin-bottom: 14px; }
  .rules { display: none; }
}
.rules li { background: var(--cream); border: 2px solid var(--amber); border-radius: 999px; padding: 4px 12px; font-weight: 700; font-size: 14px; }

/* ---------- 題目卡 ---------- */
.q-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 8px; }
.q-level { margin-left: auto; display: inline-flex; align-items: center; gap: 4px; font-weight: 700; font-size: 13px; color: var(--muted); white-space: nowrap; }
.q-level .stars { font-size: 17px; letter-spacing: 1px; line-height: 1; }
.q-level .on { color: var(--amber); -webkit-text-stroke: 1px var(--blue-dark); }
.q-level .off { color: #8A97B3; }
.q-no { background: var(--blue); color: #fff; border-radius: 999px; padding: 3px 12px; font-weight: 900; font-size: 14px; }
.q-topic { background: var(--cream); border: 2px solid var(--amber); border-radius: 999px; padding: 1px 10px; font-weight: 700; font-size: 14px; }
.q-title { margin: 4px 0 14px; font-size: clamp(20px, 5.4vw, 26px); line-height: 1.35; color: var(--blue-dark); }

.hypo { background: #F2F6FF; border-left: 5px solid var(--blue); border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; }
.hypo p { margin: 0; }
.hypo-label { font-size: 13px; font-weight: 900; color: var(--blue); letter-spacing: .04em; }
.hypo-zh { font-weight: 700; line-height: 1.6; margin-top: 2px !important; }
.hypo-en { font-size: 14px; color: var(--muted); line-height: 1.5; margin-top: 2px !important; }

.figure { margin: 0 0 14px; }
.figure-btn { position: relative; display: block; width: 100%; padding: 0; border: 2px solid var(--ink); border-radius: 8px; background: #fff; overflow: hidden; }
.figure-btn img { display: block; width: 100%; height: auto; }
.zoom-hint {
  position: absolute;
  right: 8px;
  bottom: 8px;
  background: rgba(15, 37, 102, .85);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  padding: 3px 10px;
}
.figure figcaption { text-align: center; font-size: 13px; color: var(--muted); margin-top: 6px; }

/* 仿考評局「蒐集數據的步驟」欄 */
.steps { border: 2px solid var(--ink); border-radius: 4px; margin-bottom: 16px; }
.steps-label { margin: 0; padding: 6px 12px; border-bottom: 2px solid var(--ink); background: #F4F4F4; font-weight: 900; letter-spacing: .1em; }
.steps ol { margin: 0; padding: 10px 14px 10px 34px; line-height: 1.7; }
.steps li { padding-left: 2px; }
.steps li::marker { font-family: var(--font-num); font-weight: 700; }

.q-ask { margin: 0 0 10px; font-size: 18px; color: var(--blue-dark); }
.options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: var(--paper);
  border: var(--outline);
  border-radius: 16px;
  padding: 11px 8px;
  box-shadow: 0 4px 0 var(--blue-dark);
  transition: transform .1s, box-shadow .1s, background .2s;
}
.option b { font-size: 16px; line-height: 1.3; text-align: center; }
.option span { font-size: 12px; color: var(--muted); text-align: center; line-height: 1.3; }
.option:not(:disabled):active { transform: translateY(3px); box-shadow: 0 1px 0 var(--blue-dark); }
.option:disabled { cursor: default; opacity: .55; }
.option.is-answer { opacity: 1; background: var(--good-bg); border-color: var(--good); box-shadow: 0 4px 0 var(--good); }
.option.is-answer b::before { content: '✓ '; color: var(--good); }
.option.is-wrong { opacity: 1; background: var(--bad-bg); border-color: var(--bad); box-shadow: 0 4px 0 var(--bad); }
.option.is-wrong b::before { content: '✗ '; color: var(--bad); }

.feedback { margin-top: 18px; scroll-margin-top: 110px; }
.fb-verdict { margin: 0 0 10px; font-size: 21px; color: var(--bad); }
.feedback.is-good .fb-verdict { color: var(--good); }
.fb-box { background: var(--cream); border-radius: 14px; padding: 12px 14px; margin-bottom: 10px; line-height: 1.7; }
.fb-box p { margin: 0; }
.fb-box p + p { margin-top: 6px; }
.fb-label { font-weight: 900; color: var(--blue-dark); margin-bottom: 2px !important; }
.fb-wrong { background: var(--bad-bg); }
.fb-trap { background: #F2F6FF; }
.feedback .btn { margin-top: 6px; }

/* ---------- 成績 ---------- */
.result-wrap { max-width: 720px; margin: 0 auto; }
.score-card { text-align: center; }
.kicker { margin: 0; font-weight: 900; color: var(--muted); letter-spacing: .1em; }
.score { font-family: var(--font-num); font-weight: 700; color: var(--blue-dark); line-height: 1; margin: 6px 0; }
.score span { font-size: 84px; }
.score small { font-size: 28px; margin-left: 4px; color: var(--muted); }
.score-label { margin: 0 0 6px; font-size: 22px; color: var(--blue); }
.review { margin: 0; line-height: 1.6; }
.methods-title { margin: 0 0 10px; font-size: 19px; color: var(--blue-dark); }
.method-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.method-list li { border: 2px solid var(--line); border-radius: 14px; padding: 10px 12px; }
.method-list li.miss { border-color: var(--bad); background: var(--bad-bg); }
.method-list li.ok { border-color: var(--good); background: var(--good-bg); }
.method-list li.none { background: #F4F6FA; }
.ml-head { display: flex; justify-content: space-between; align-items: baseline; }
.ml-head span { font-family: var(--font-num); font-weight: 700; }
.method-list p { margin: 4px 0 0; font-size: 14px; color: var(--muted); line-height: 1.6; }

.cta { background: var(--blue); color: #fff; text-align: center; }
/* 報名狀態：閃動綠點 */
.cta-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--blue-dark);
  font-weight: 900;
  font-size: 14px;
}
.cta-status span { width: 9px; height: 9px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 0 rgba(47, 164, 90, .6); animation: live 1.6s infinite; }
@keyframes live { 70% { box-shadow: 0 0 0 7px rgba(47, 164, 90, 0); } 100% { box-shadow: 0 0 0 0 rgba(47, 164, 90, 0); } }
.cta-kicker { margin: 0; font-size: 13px; font-weight: 900; color: var(--gold); letter-spacing: .1em; }
.cta-course { margin: 6px 0 4px; font-size: clamp(30px, 9vw, 40px); line-height: 1.2; color: var(--gold); text-shadow: 0 3px 0 var(--blue-dark); }
.cta-head { margin: 0 0 14px; font-size: 18px; font-weight: 900; }
/* 由全港平均分到目標分數 */
.cta-goal { display: flex; align-items: stretch; justify-content: center; gap: 8px; margin: 0 0 10px; }
.cta-goal > div { flex: 1; max-width: 170px; padding: 10px 8px; border-radius: 16px; background: rgba(255, 255, 255, .1); border: 2px solid rgba(255, 255, 255, .25); }
.cta-goal > div.is-goal { background: var(--gold); border-color: var(--gold); color: var(--blue-dark); }
.cta-goal b { display: block; font-family: var(--font-num); font-size: 38px; line-height: 1.1; }
.cta-goal small { font-size: 16px; margin-left: 2px; }
.cta-goal span { font-size: 13px; font-weight: 700; }
.cta-goal i { align-self: center; font-style: normal; font-size: 24px; font-weight: 900; color: var(--gold); }
.cta-desc { margin: 0 0 12px; line-height: 1.7; opacity: .92; }
.cta-facts { list-style: none; margin: 0 0 18px; padding: 0; display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.cta-facts li { padding: 4px 10px; border-radius: 999px; border: 2px solid rgba(255, 222, 89, .6); font-size: 13px; font-weight: 700; }
.cta-facts b { color: var(--gold); margin-right: 4px; font-family: var(--font-num); font-size: 15px; }
/* 筆記節錄：兩頁筆記交疊擺放，下半淡出，只作預覽 */
.cta-notes { margin: 0 0 16px; display: grid; gap: 12px; }
.notes-stack { position: relative; height: 178px; }
.notes-stack img {
  position: absolute;
  top: 6px;
  width: 62%;
  max-width: 300px;
  aspect-ratio: 520 / 441;
  object-fit: cover;
  object-position: top;
  background: #fff;
  border: 4px solid #fff;
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(5, 15, 45, .45);
  -webkit-mask-image: linear-gradient(180deg, #000 55%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 55%, transparent 100%);
}
.notes-stack img:first-child { left: 2%; transform: rotate(-5deg); }
.notes-stack img:last-child { right: 2%; top: 14px; transform: rotate(4deg); }
.cta-notes figcaption b { display: block; color: var(--gold); font-size: 15px; }
.cta-notes figcaption span { font-size: 14px; line-height: 1.65; opacity: .92; }
@media (min-width: 640px) {
  .cta-notes { grid-template-columns: 1.15fr 1fr; align-items: center; }
}

/* 優惠碼：虛線邊框似優惠券 */
.promo {
  margin: 0 0 14px;
  padding: 12px 14px;
  border: 2px dashed var(--gold);
  border-radius: 16px;
  background: rgba(255, 222, 89, .1);
  text-align: center;
}
.promo-label { margin: 0 0 6px; font-size: 13px; font-weight: 900; color: var(--gold); letter-spacing: .12em; }
.promo-row { display: flex; justify-content: center; align-items: center; gap: 10px; flex-wrap: wrap; }
.promo-code {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--blue-dark);
  background: #fff;
  border-radius: 10px;
  padding: 4px 14px;
}
.promo-copy {
  border: 0;
  border-radius: 999px;
  padding: 9px 16px;
  font-weight: 900;
  background: var(--amber);
  color: var(--blue-dark);
  box-shadow: 0 3px 0 var(--blue-dark);
}
.promo-copy.is-done { background: var(--good); color: #fff; }
.promo-note { margin: 8px 0 0; font-size: 14px; }
.promo-note b { color: var(--gold); font-size: 17px; }

.cta-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0 0 20px; }
.cta-option {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: #fff;
  color: var(--blue-dark);
  border: var(--outline);
  border-radius: 16px;
  padding: 12px 10px 10px;
  text-decoration: none;
  box-shadow: 0 4px 0 var(--blue-dark);
}
.cta-option b { font-size: 16px; }
.cta-option span { flex: 1; font-size: 13px; color: var(--muted); line-height: 1.5; }
/* 大字「了解更多」按鈕 */
.cta-option i {
  margin-top: 10px;
  padding: 9px 6px;
  border-radius: 999px;
  background: var(--amber);
  border: 2px solid var(--blue-dark);
  font-style: normal;
  font-weight: 900;
  font-size: 19px;
  letter-spacing: .06em;
  color: var(--blue-dark);
}
.cta-option:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--blue-dark); }
.cta-notes { text-align: left; }
.cta .promo { margin-bottom: 0; }
#btn-retry { max-width: 720px; display: flex; margin: 0 auto; }

/* ---------- 略圖放大 ---------- */
.lightbox { position: fixed; inset: 0; z-index: 20; background: rgba(10, 20, 50, .9); display: flex; align-items: center; justify-content: center; }
.lightbox-scroll { width: 100%; max-height: 100%; overflow: auto; padding: 56px 8px 16px; }
.lightbox-scroll img { display: block; width: 100%; min-width: 760px; height: auto; background: #fff; border-radius: 6px; }
@media (min-width: 800px) { .lightbox-scroll img { min-width: 0; max-width: 1200px; margin: 0 auto; } }
.lightbox-close {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  right: 12px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: var(--bad);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}

@media (min-width: 700px) {
  .options { grid-template-columns: repeat(3, 1fr); }
}