:root {
  --bg: #11151d;
  --panel: #191e28;
  --panel-strong: #202631;
  --border: #303846;
  --text: #f3f5f7;
  --muted: #aab3c0;
  --subtle: #737f8f;
  --accent: #62d6c5;
  --accent-deep: #1f8f87;
  --warm: #f2b35d;
  --danger: #ef7f76;
  --shadow: 0 20px 50px rgba(0, 0, 0, .22);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.55; }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
a { color: inherit; }

.app-shell { min-height: 100vh; padding-bottom: 112px; }
.topbar { height: 72px; max-width: 1180px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--accent); border-radius: 50%; color: var(--accent); font-size: 17px; }
.brand strong, .brand small { display: block; }
.brand strong { letter-spacing: .02em; font-size: 15px; }
.brand small { color: var(--muted); font-size: 11px; margin-top: 1px; }
.icon-button { width: 40px; height: 40px; display: inline-grid; place-items: center; padding: 0; border: 1px solid var(--border); border-radius: 50%; background: transparent; color: var(--text); transition: border-color .2s, background .2s, color .2s; }
.icon-button:hover { border-color: var(--accent); background: rgba(98,214,197,.12); color: var(--accent); }

main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.intro-band { min-height: 220px; padding: 58px 0 42px; display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .16em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 650px; margin-bottom: 12px; font-size: clamp(34px, 5vw, 58px); line-height: 1.05; letter-spacing: -.03em; font-weight: 760; }
h2 { margin-bottom: 12px; font-size: clamp(25px, 3vw, 34px); line-height: 1.15; letter-spacing: -.02em; }
h3 { margin-bottom: 0; font-size: 16px; }
.intro-copy { max-width: 570px; margin-bottom: 0; color: var(--muted); font-size: 16px; }
.intro-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; max-width: 320px; }
.intro-meta span, .time-label { padding: 7px 10px; border: 1px solid var(--border); color: var(--muted); font-size: 12px; }
.tabbar { display: flex; gap: 4px; margin-bottom: 28px; padding: 4px; border: 1px solid var(--border); background: #151a22; width: fit-content; }
.tab { min-height: 40px; padding: 0 16px; border: 0; background: transparent; color: var(--muted); font-weight: 650; font-size: 13px; }
.tab span { margin-right: 6px; color: var(--subtle); }
.tab:hover, .tab.is-active { background: var(--panel-strong); color: var(--text); }
.tab.is-active span { color: var(--accent); }

.view { display: none; animation: view-in .24s ease both; }
.view.is-visible { display: block; }
@keyframes view-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
.panel { border: 1px solid var(--border); background: var(--panel); box-shadow: var(--shadow); }
.test-intro, .test-stage { padding: clamp(24px, 4vw, 42px); }
.section-heading, .panel-title-row, .progress-row, .question-header, .question-actions, .timer-actions, .player-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.body-copy { max-width: 660px; margin-bottom: 26px; color: var(--muted); }
.chakra-key { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin: 30px 0; }
.key-item { min-width: 0; padding: 10px 6px; border-top: 2px solid var(--key-color); color: var(--muted); text-align: center; font-size: 11px; }
.key-dot { width: 8px; height: 8px; margin: 0 auto 7px; border-radius: 50%; background: var(--key-color); }
.primary-button, .secondary-button { min-height: 42px; padding: 0 16px; border-radius: 3px; font-weight: 700; font-size: 13px; transition: transform .2s, background .2s, border-color .2s; }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: #0c2928; }
.primary-button:hover { transform: translateY(-1px); background: #83e7d8; }
.secondary-button { border: 1px solid var(--border); background: transparent; color: var(--text); }
.secondary-button:hover { border-color: var(--accent); color: var(--accent); }
.is-hidden { display: none !important; }

.progress-row { color: var(--muted); font-size: 12px; }
.progress-track { height: 4px; margin: 12px 0 34px; overflow: hidden; background: #2b323e; }
.progress-fill { height: 100%; width: 3%; background: var(--accent); transition: width .25s ease; }
.question-header { justify-content: flex-start; margin-bottom: 18px; }
.chakra-pill { padding: 5px 10px; border: 1px solid currentColor; color: var(--accent); font-size: 12px; }
.question-number { color: var(--subtle); font-size: 12px; }
.test-stage h2 { max-width: 760px; margin-bottom: 28px; font-size: clamp(23px, 3vw, 34px); }
.options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.option { min-height: 58px; display: grid; place-items: center; padding: 8px; border: 1px solid var(--border); background: #151a22; color: var(--muted); text-align: center; font-size: 13px; transition: border-color .2s, background .2s, color .2s; }
.option:hover, .option.is-selected { border-color: var(--accent); background: rgba(98,214,197,.12); color: var(--text); }
.question-actions { margin-top: 30px; }
.question-actions .primary-button { margin-left: auto; }
.hint { margin: 16px 0 0; color: var(--subtle); font-size: 12px; text-align: right; }

.results-stage { display: grid; gap: 18px; }
.result-hero { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: clamp(24px, 4vw, 42px); }
.result-hero .body-copy { margin-bottom: 18px; }
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.score-orbit { width: 150px; height: 150px; flex: 0 0 auto; display: grid; place-content: center; border: 1px solid var(--accent); border-radius: 50%; box-shadow: inset 0 0 0 10px rgba(98,214,197,.06), 0 0 0 12px rgba(98,214,197,.04); text-align: center; }
.score-value { display: block; color: var(--accent); font-size: 43px; line-height: 1; font-weight: 750; }
.score-caption { color: var(--muted); font-size: 11px; }
.result-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
.chart-panel, .score-panel, .detail-panel { padding: 22px; }
.muted { color: var(--subtle); font-size: 12px; }
#radarChart { display: block; width: 100%; height: 360px; margin-top: 10px; }
.score-list { display: grid; gap: 12px; margin-top: 18px; }
.score-row { display: grid; grid-template-columns: 92px 1fr 38px; align-items: center; gap: 10px; font-size: 12px; }
.score-name { color: var(--muted); }
.score-bar { height: 7px; background: #2b323e; }
.score-bar span { display: block; height: 100%; background: var(--score-color); }
.score-number { color: var(--score-color); text-align: right; font-weight: 700; }
.detail-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 18px; }
.detail-item { padding: 16px; border-left: 3px solid var(--detail-color); background: #151a22; }
.detail-item h4 { margin: 0 0 7px; font-size: 14px; }
.detail-item p { margin: 0; color: var(--muted); font-size: 12px; }

.page-heading { margin-bottom: 22px; }
.page-heading .section-note { max-width: 360px; margin: 0; color: var(--muted); font-size: 13px; text-align: right; }
.practice-layout { display: grid; grid-template-columns: 270px 1fr; gap: 18px; }
.chakra-selector { padding: 8px; align-self: start; }
.chakra-select-button { width: 100%; min-height: 54px; display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 0; border-left: 3px solid var(--select-color); background: transparent; color: var(--muted); text-align: left; }
.chakra-select-button:hover, .chakra-select-button.is-selected { background: var(--panel-strong); color: var(--text); }
.select-dot { width: 10px; height: 10px; flex: 0 0 auto; border-radius: 50%; background: var(--select-color); }
.select-copy strong, .select-copy small { display: block; }
.select-copy strong { font-size: 13px; }
.select-copy small { color: var(--subtle); font-size: 11px; }
.practice-main { display: grid; gap: 18px; }
.practice-card { padding: clamp(24px, 4vw, 38px); }
.practice-card .practice-color-line { width: 70px; height: 4px; margin-bottom: 22px; background: var(--practice-color); }
.practice-card h3 { margin-bottom: 8px; font-size: 27px; }
.practice-card .practice-tag { margin-bottom: 24px; color: var(--practice-color); font-size: 13px; }
.practice-steps { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.practice-steps li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; color: var(--muted); font-size: 13px; }
.practice-steps li::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); color: var(--practice-color); font-weight: 750; }
.practice-focus { margin: 24px 0 0; padding: 14px 16px; border: 1px solid var(--border); color: var(--muted); font-size: 12px; }
.practice-music-button { margin-top: 22px; }
.timer-card { padding: 22px; }
.timer-display { margin: 16px 0; color: var(--accent); font-size: clamp(42px, 7vw, 70px); line-height: 1; font-variant-numeric: tabular-nums; letter-spacing: .03em; }
.timer-presets { display: flex; gap: 6px; flex-wrap: wrap; }
.time-button { padding: 7px 10px; border: 1px solid var(--border); background: transparent; color: var(--muted); font-size: 12px; }
.time-button:hover, .time-button.is-active { border-color: var(--accent); color: var(--accent); }
.timer-actions { justify-content: flex-start; margin-top: 16px; }

.music-notice { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 18px; padding: 15px 18px; }
.music-notice p { margin: 0; color: var(--muted); font-size: 12px; }
.notice-icon { color: var(--warm); font-size: 22px; line-height: 1; }
.music-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.music-card { display: grid; grid-template-columns: 42px 1fr auto; gap: 14px; align-items: center; padding: 18px; border: 1px solid var(--border); background: var(--panel); }
.music-card.is-playing { border-color: var(--music-color); }
.music-symbol { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--music-color) 18%, transparent); color: var(--music-color); font-size: 19px; }
.music-card h3 { margin: 0 0 2px; font-size: 15px; }
.music-card p { margin: 0; color: var(--muted); font-size: 12px; }
.music-card small { display: block; margin-top: 5px; color: var(--subtle); font-size: 10px; }
.music-play { border-color: var(--music-color); color: var(--music-color); }

.about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.about-card { min-height: 190px; padding: 22px; }
.about-index { display: block; margin-bottom: 24px; color: var(--accent); font-size: 12px; font-weight: 750; }
.about-card h3 { margin-bottom: 10px; font-size: 18px; }
.about-card p { margin-bottom: 14px; color: var(--muted); font-size: 13px; }
.text-link { color: var(--accent); font-size: 12px; text-underline-offset: 3px; }

.player-dock { position: fixed; right: 0; bottom: 0; left: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 12px max(20px, calc((100vw - 1180px) / 2)); border-top: 1px solid var(--border); background: rgba(17,21,29,.96); box-shadow: 0 -10px 28px rgba(0,0,0,.18); backdrop-filter: blur(16px); }
.player-info { min-width: 0; display: flex; align-items: center; gap: 10px; }
.player-dot { width: 9px; height: 9px; flex: 0 0 auto; border-radius: 50%; background: var(--subtle); }
.player-dot.is-playing { background: var(--accent); box-shadow: 0 0 0 5px rgba(98,214,197,.14); }
.player-info strong, .player-info small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-info strong { max-width: 260px; font-size: 12px; }
.player-info small { max-width: 260px; color: var(--subtle); font-size: 11px; }
.player-controls { min-width: min(560px, 55vw); justify-content: flex-end; }
.player-play { border-color: var(--accent); color: var(--accent); }
.seek-range { width: min(360px, 34vw); accent-color: var(--accent); }
.player-time { min-width: 42px; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }

@media (max-width: 760px) {
  .topbar { height: 64px; padding: 0 18px; }
  main { width: min(100% - 28px, 600px); }
  .intro-band { display: block; min-height: auto; padding: 38px 0 28px; }
  .intro-meta { justify-content: flex-start; margin-top: 22px; max-width: none; }
  .tabbar { width: 100%; justify-content: space-between; margin-bottom: 18px; }
  .tab { flex: 1; padding: 0 7px; font-size: 12px; }
  .tab span { margin-right: 3px; }
  .chakra-key { grid-template-columns: repeat(4, 1fr); }
  .options { grid-template-columns: 1fr; }
  .option { min-height: 48px; }
  .question-actions { gap: 8px; }
  .result-hero { display: block; }
  .score-orbit { margin-top: 28px; }
  .result-layout, .practice-layout, .music-grid, .about-grid { grid-template-columns: 1fr; }
  .detail-list { grid-template-columns: 1fr; }
  .page-heading { display: block; }
  .page-heading .section-note { margin-top: 6px; text-align: left; }
  .practice-card h3 { font-size: 24px; }
  .player-dock { display: block; padding: 10px 14px 12px; }
  .player-info { margin-bottom: 8px; }
  .player-controls { min-width: 0; justify-content: space-between; gap: 8px; }
  .seek-range { width: auto; flex: 1; }
  .player-info strong, .player-info small { max-width: calc(100vw - 70px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}