:root {
  color-scheme: light;
  --paper: #f7f8fb;
  --paper-raised: #fbfcfe;
  --ink: #1f2330;
  --ink-soft: #5f6678;
  --ink-faint: #8c93a3;
  --line: #d9dde6;
  --line-strong: #bcc3d2;
  --accent: #4c4fa3;
  --accent-strong: #353780;
  --accent-soft: #ececf8;
  --sin: oklch(0.49 0.075 350);
  --sin-fill: oklch(0.93 0.022 350);
  --virtue: oklch(0.47 0.07 190);
  --virtue-fill: oklch(0.93 0.022 190);
  --focus: #5558b4;
  --error: #9f3f50;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --sans: "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", STSong, SimSun, serif;
  font-family: var(--sans);
  font-synthesis: none;
  background: var(--paper);
  color: var(--ink);
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--paper); }

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, input { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }

button:focus-visible,
input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 32%, transparent);
  outline-offset: 3px;
}

.page-shell {
  width: min(100%, 76rem);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: max(var(--space-md), env(safe-area-inset-top)) max(var(--space-md), env(safe-area-inset-right)) max(var(--space-md), env(safe-area-inset-bottom)) max(var(--space-md), env(safe-area-inset-left));
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.site-header,
.site-footer,
.document-index,
.test-topline,
.result-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  min-height: 3rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-decoration: none;
}

.wordmark-mark {
  width: 0.875rem;
  height: 0.875rem;
  border: 1px solid var(--accent);
  position: relative;
  transform: rotate(45deg);
}

.wordmark-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--accent);
}

.header-status,
.site-footer,
.document-index,
.section-number,
.report-code,
.progress-label,
.microcopy {
  color: var(--ink-faint);
  font-size: 0.625rem;
  line-height: 1.4;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.header-status { display: none; }

.app-shell {
  width: 100%;
  display: grid;
  align-items: center;
}

.screen {
  width: min(100%, 62rem);
  margin: 0 auto;
  padding-block: var(--space-2xl);
}

.document-index {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 var(--space-md);
  color: var(--accent);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1, h2, p { overflow-wrap: break-word; }

h1, h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 9vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.04em;
}

h2 {
  font-size: 1.375rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.lede {
  max-width: 34rem;
  margin: var(--space-lg) 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.75;
}

.auth-screen { max-width: 42rem; }
.auth-lockup { margin-bottom: var(--space-xl); }
.auth-form { display: grid; gap: var(--space-md); }
.auth-form > label { font-size: 0.8125rem; font-weight: 700; }

.field-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 180ms ease;
}

.field-row:focus-within { border-color: var(--accent); }

.field-row input {
  width: 100%;
  min-height: 3.5rem;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.field-row input::placeholder { color: var(--ink-faint); letter-spacing: 0; }

.icon-action,
.text-button,
.back-button {
  min-width: 3rem;
  min-height: 3rem;
  padding: 0.5rem;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.8125rem;
}

.form-message {
  min-height: 1.25rem;
  margin: 0;
  color: var(--error);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.primary-button,
.secondary-button {
  min-height: 3.25rem;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.primary-button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}

.primary-button:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.primary-button:active, .secondary-button:active { transform: translateY(1px); }
.primary-button:disabled { border-color: var(--line); background: var(--line); color: var(--ink-faint); cursor: not-allowed; }

.secondary-button {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
}

.secondary-button:hover { border-color: var(--accent); color: var(--accent); }
.secondary-button:disabled { border-color: var(--line); color: var(--ink-faint); cursor: not-allowed; }
.secondary-button:disabled:hover { border-color: var(--line); color: var(--ink-faint); transform: none; }

.auth-form .primary-button { margin-top: var(--space-sm); }
.microcopy { margin: var(--space-lg) 0 0; }

.intro-grid { display: grid; gap: var(--space-xl); }
.intro-copy .lede { margin-top: 0; }

.test-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: var(--space-xl) 0;
  border-block: 1px solid var(--line);
  background: var(--line);
}

.test-meta div {
  padding: var(--space-md) 0;
  background: var(--paper);
}

.test-meta dt { color: var(--ink-faint); font-size: 0.6875rem; letter-spacing: 0.08em; }
.test-meta dd { margin: 0.25rem 0 0; font-size: 1rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.intro-copy .primary-button { width: 100%; }

.text-button {
  width: 100%;
  margin-top: var(--space-xs);
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.boundary-note {
  max-width: 40rem;
  margin: var(--space-lg) 0 0;
  color: var(--ink-faint);
  font-size: 0.75rem;
  line-height: 1.7;
}

.test-screen {
  min-height: min(44rem, calc(100svh - 8rem));
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  align-items: start;
}

.back-button { margin-left: -0.5rem; color: var(--ink-soft); }
.progress-label { margin: 0; }
.progress-label span { color: var(--accent); font-size: 0.75rem; }

.progress-track { height: 2px; margin-top: var(--space-sm); background: var(--line); overflow: hidden; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--accent); transition: width 240ms ease; }

.question-stage { padding-block: var(--space-2xl) var(--space-xl); }
.question-stage h1 { max-width: 20em; font-size: clamp(1.625rem, 7vw, 2.5rem); line-height: 1.38; }

.option-list { display: grid; gap: var(--space-sm); margin-top: var(--space-xl); }

.option-button {
  min-height: 3.5rem;
  padding: 0.75rem var(--space-md);
  display: grid;
  grid-template-columns: 1.75rem 1fr auto;
  align-items: center;
  gap: var(--space-sm);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  text-align: left;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.option-button:hover { border-color: var(--line-strong); background: var(--paper-raised); color: var(--ink); }
.option-button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.option-key { color: var(--ink-faint); font-size: 0.6875rem; font-variant-numeric: tabular-nums; }

.option-indicator {
  width: 0.75rem;
  height: 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.option-button[aria-pressed="true"] .option-indicator { border: 3px solid var(--accent); background: var(--paper); }

.test-actions {
  display: grid;
  grid-template-columns: 1fr;
  align-items: stretch;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--line);
}

.question-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
  order: -1;
}

.autosave-note { margin: 0; color: var(--ink-faint); font-size: 0.6875rem; }
.autosave-note span { display: inline-block; width: 0.375rem; height: 0.375rem; margin-right: 0.375rem; border-radius: 50%; background: var(--accent); }

.reveal-screen { max-width: 40rem; text-align: center; }
.reveal-screen .document-index { text-align: left; }
.reveal-screen h1 { max-width: 12em; margin-inline: auto; font-size: clamp(1.75rem, 8vw, 2.75rem); }

.calibration-mark {
  width: 8.5rem;
  aspect-ratio: 1;
  margin: 0 auto var(--space-xl);
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  animation: rotate 8s linear infinite;
}

.calibration-mark::before,
.calibration-mark::after,
.calibration-mark span {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 1px;
  height: 100%;
  background: var(--line);
  transform-origin: center top;
}

.calibration-mark::before { transform: translate(-50%, -50%) rotate(0deg); }
.calibration-mark::after { transform: translate(-50%, -50%) rotate(60deg); }
.calibration-mark span:nth-child(1) { transform: translate(-50%, -50%) rotate(120deg); }
.calibration-mark span:nth-child(2) { width: 0.75rem; height: 0.75rem; border-radius: 50%; background: var(--accent); transform: translate(-50%, -50%); }
.calibration-mark span:nth-child(3) { width: 2.75rem; height: 2.75rem; border: 1px solid var(--accent); border-radius: 50%; background: var(--paper); transform: translate(-50%, -50%); }

@keyframes rotate { to { transform: rotate(360deg); } }

.reveal-steps { width: min(100%, 22rem); margin: var(--space-xl) auto 0; padding: 0; list-style: none; text-align: left; }
.reveal-steps li { padding: var(--space-sm) 0; border-bottom: 1px solid var(--line); color: var(--ink-faint); font-size: 0.8125rem; transition: color 180ms ease; }
.reveal-steps li::before { content: "○"; margin-right: var(--space-sm); color: var(--line-strong); }
.reveal-steps li.is-complete { color: var(--ink); }
.reveal-steps li.is-complete::before { content: "●"; color: var(--accent); }

.result-screen { align-self: start; }
.result-heading { align-items: flex-start; gap: var(--space-lg); margin-bottom: var(--space-xl); }
.result-heading h1 { font-size: clamp(1.75rem, 7vw, 3rem); }
.report-code { flex: 0 0 auto; margin: 0.25rem 0 0; color: var(--accent); text-align: right; }
.peak-overview {
  display: grid;
  margin-bottom: var(--space-xl);
  border-block: 1px solid var(--line);
}

.peak-panel { padding-block: var(--space-lg); }
.peak-panel + .peak-panel { border-top: 1px solid var(--line); }
.peak-panel-sin { color: var(--sin); }
.peak-panel-virtue { color: var(--virtue); }
.peak-kicker { margin: 0 0 var(--space-md); font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.08em; }
.peak-entry + .peak-entry { margin-top: var(--space-lg); padding-top: var(--space-md); border-top: 1px solid var(--line); }
.peak-name { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); margin: 0; }
.peak-name span { color: currentColor; font-family: var(--serif); font-size: 1.75rem; }
.peak-name strong { color: currentColor; font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.peak-copy { max-width: 35rem; margin: var(--space-sm) 0 0; color: var(--ink-soft); font-family: var(--serif); line-height: 1.8; }
.peak-note { margin: var(--space-sm) 0 0; color: var(--ink-faint); font-size: 0.6875rem; line-height: 1.6; }

.tension-overview {
  margin-bottom: var(--space-2xl);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--line);
}

.tension-overview h2 { margin: var(--space-xs) 0 var(--space-sm); font-size: 1.375rem; }
.tension-overview > p:last-child { max-width: 48rem; margin: 0; color: var(--ink-soft); font-family: var(--serif); line-height: 1.85; }
.result-grid { display: grid; gap: var(--space-2xl); }

.radar-column {
  min-width: 0;
  padding-block: var(--space-lg);
  border-block: 1px solid var(--line);
}

.radar-legend {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xs);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.radar-legend span { display: inline-flex; align-items: center; gap: var(--space-xs); }
.radar-legend i { display: inline-block; width: 1.5rem; height: 2px; background: currentColor; }
.radar-legend-sin { color: var(--sin); }
.radar-legend-virtue { color: var(--virtue); }

.radar-chart { width: min(100%, 32rem); margin-inline: auto; }
.radar-chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.radar-grid { fill: none; stroke: var(--line); stroke-width: 1; }
.radar-axis { stroke: var(--line); stroke-width: 1; }
.radar-divider { stroke: var(--line-strong); stroke-width: 1; }
.radar-shape { stroke-width: 2; stroke-linejoin: round; }
.radar-shape-sin { fill: var(--sin-fill); stroke: var(--sin); }
.radar-shape-virtue { fill: var(--virtue-fill); stroke: var(--virtue); }
.radar-point { fill: var(--paper); stroke-width: 1.5; }
.radar-point-sin { stroke: var(--sin); }
.radar-point-virtue { stroke: var(--virtue); }
.radar-label { fill: var(--ink-soft); font-family: var(--sans); font-size: 10px; }
.radar-label-sin, .radar-value-sin { fill: var(--sin); }
.radar-label-virtue, .radar-value-virtue { fill: var(--virtue); }
.radar-value { font-weight: 700; font-variant-numeric: tabular-nums; }

.distribution-note {
  margin: var(--space-md) 0 0;
  color: var(--ink-faint);
  font-size: 0.75rem;
  line-height: 1.65;
  text-align: center;
}

.analysis-column { display: grid; gap: var(--space-2xl); }
.analysis-block { padding-left: var(--space-md); border-left: 2px solid var(--line-strong); }
.positive-analysis { border-color: var(--accent); }
.analysis-block .section-number { margin: 0 0 var(--space-sm); }
.analysis-block h2 { margin-bottom: var(--space-md); }
.analysis-block > p:last-child { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 1rem; line-height: 1.9; }

.dimension-section {
  margin-top: var(--space-3xl);
  padding-block: var(--space-xl);
  border-block: 1px solid var(--line);
}

.dimension-section-heading { align-items: end; gap: var(--space-lg); margin-bottom: var(--space-xl); }
.dimension-section-heading h2 { margin-top: var(--space-xs); }
.dimension-section-heading > p { max-width: 22rem; margin: 0; color: var(--ink-faint); font-size: 0.75rem; line-height: 1.6; }
.dimension-groups { display: grid; gap: var(--space-2xl); }
.dimension-group-title { margin-bottom: var(--space-sm); padding-bottom: var(--space-sm); border-bottom: 2px solid currentColor; font-size: 0.8125rem; }
.dimension-group-title-sin { color: var(--sin); }
.dimension-group-title-virtue { color: var(--virtue); }
.dimension-detail { border-bottom: 1px solid var(--line); }
.dimension-detail summary {
  min-height: 3.5rem;
  padding: var(--space-sm) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 4rem;
  align-items: center;
  gap: var(--space-sm);
  color: var(--ink);
  cursor: pointer;
}
.dimension-detail summary::marker { color: var(--line-strong); }
.dimension-detail-sin[open] summary::marker { color: var(--sin); }
.dimension-detail-virtue[open] summary::marker { color: var(--virtue); }
.dimension-name { font-family: var(--serif); font-size: 1.0625rem; }
.dimension-name i { margin-left: 0.35rem; color: var(--accent); font-family: var(--sans); font-size: 0.625rem; font-style: normal; letter-spacing: 0.08em; }
.dimension-score { font-weight: 700; font-variant-numeric: tabular-nums; }
.dimension-detail-sin .dimension-score { color: var(--sin); }
.dimension-detail-virtue .dimension-score { color: var(--virtue); }
.dimension-band { color: var(--ink-faint); font-size: 0.6875rem; text-align: right; }
.dimension-detail > p { margin: 0; padding: 0 0 var(--space-lg); color: var(--ink-soft); font-family: var(--serif); line-height: 1.85; }

.advice-section {
  margin-top: var(--space-2xl);
  padding-block: var(--space-xl);
  display: grid;
  gap: var(--space-lg);
  border-block: 1px solid var(--line);
}

.advice-section .section-number { margin: 0 0 var(--space-xs); }
.advice-list { margin: 0; padding: 0; list-style: none; counter-reset: advice; }
.advice-list li { counter-increment: advice; display: grid; grid-template-columns: 2rem 1fr; gap: var(--space-sm); padding: var(--space-sm) 0; color: var(--ink-soft); line-height: 1.6; }
.advice-list li::before { content: "0" counter(advice); color: var(--accent); font-size: 0.6875rem; letter-spacing: 0.08em; padding-top: 0.25rem; }

.result-actions { display: grid; gap: var(--sm, 0.75rem); margin-top: var(--space-xl); }
.result-secondary-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr)); gap: var(--space-sm); }
.share-status { min-height: 1.5rem; margin: var(--space-sm) 0 0; color: var(--ink-soft); font-size: 0.75rem; text-align: center; }
.result-boundary { margin-inline: auto; text-align: center; }

.site-footer {
  min-height: 3rem;
  gap: var(--space-md);
  border-top: 1px solid var(--line);
}

@media (min-width: 42rem) {
  .page-shell { padding-inline: var(--space-xl); }
  .header-status { display: block; }
  .screen { padding-block: var(--space-3xl); }
  .intro-copy .primary-button { width: auto; min-width: 12rem; }
  .text-button { width: auto; margin-left: var(--space-md); }
  .option-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .option-button:last-child { grid-column: 1 / -1; }
  .test-actions { grid-template-columns: 1fr auto; align-items: center; }
  .question-navigation { min-width: 17rem; order: 0; }
  .peak-overview { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .peak-panel { padding: var(--space-lg); }
  .peak-panel + .peak-panel { border-top: 0; border-left: 1px solid var(--line); }
  .dimension-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-actions { grid-template-columns: minmax(15rem, 1fr) minmax(24rem, 1fr); }
}

@media (min-width: 56rem) {
  .intro-grid { grid-template-columns: minmax(0, 1.15fr) minmax(19rem, 0.85fr); gap: var(--space-3xl); align-items: end; }
  .result-grid { grid-template-columns: minmax(24rem, 1.08fr) minmax(19rem, 0.92fr); align-items: center; gap: var(--space-3xl); }
  .advice-section { grid-template-columns: minmax(12rem, 0.55fr) minmax(0, 1fr); }
}

@media (hover: hover) and (pointer: fine) {
  .primary-button:hover, .secondary-button:hover, .option-button:hover { transform: translateY(-1px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

@media print {
  .site-header, .site-footer, .result-actions, .share-status { display: none !important; }
  .page-shell { display: block; padding: 0; }
  .screen { padding: 0; }
  .result-grid { grid-template-columns: 1fr 1fr; }
}