/* ==========================================================================
   Personal website — design system
   Yu-Chen Chao | accounting, finance, and empirical research portfolio
   No external fonts or libraries: everything works offline and on GitHub Pages.
   ========================================================================== */

/* --- Design tokens -------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --bg: #f6f8fb;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f1f5fa;
  --ink: #14202b;
  --ink-soft: #3b4c5d;
  --muted: #5c6f81;
  --line: #dfe6ee;
  --line-strong: #c6d3e0;
  --accent: #1c5f8f;
  --accent-ink: #0f3b5c;
  --accent-soft: #e4eff8;
  --accent-alt: #0f8f7f;
  --accent-alt-soft: #e2f5f1;
  --warn: #9a5b06;
  --warn-soft: #fdf3e2;
  --shadow: 0 1px 2px rgba(16, 32, 48, 0.05), 0 12px 28px -18px rgba(16, 32, 48, 0.28);
  --radius: 14px;
  --radius-sm: 9px;
  --max-width: 1080px;
  --font-sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial,
    "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Noto Serif TC",
    serif;
  --font-mono: "Cascadia Mono", Consolas, "SFMono-Regular", "Liberation Mono", monospace;

  /* Story and CV tour (assets/js/story.js): marker washes, annotation pen,
     significance bands, and three country colours checked for colour-blind
     separation against the card surface in both themes. */
  --on-accent: #ffffff;
  --mk-find: #c8ece4;
  --mk-warn: #f9dfae;
  --pen: #24323f;
  --band: #eef3f9;
  --band-2: #e2ebf5;
  --c-id: #2a78d6;
  --c-my: #eb6834;
  --c-th: #1baf7a;
  /* How far a step the reader is not on fades: low enough to keep AA contrast. */
  --step-dim: 0.85;
}

html[data-theme="dark"] {
  --bg: #0d131b;
  --bg-elevated: #141d28;
  --surface: #141d28;
  --surface-alt: #1b2634;
  --ink: #e9f0f7;
  --ink-soft: #c6d3e0;
  --muted: #9aacbd;
  --line: #26333f;
  --line-strong: #35485a;
  --accent: #6db3e0;
  --accent-ink: #b9dcf6;
  --accent-soft: #17293a;
  --accent-alt: #63d3c0;
  --accent-alt-soft: #122c28;
  --warn: #e0ad64;
  --warn-soft: #2a2115;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 14px 30px -20px rgba(0, 0, 0, 0.8);
  --on-accent: #0c1620;
  --mk-find: #1d4b44;
  --mk-warn: #4b3613;
  --pen: #dfe8f1;
  --band: #152130;
  --band-2: #1b2a3c;
  --c-id: #3987e5;
  --c-my: #d95926;
  --c-th: #199e70;
  --step-dim: 0.72;
}

/* No-JavaScript fallback: honour the operating-system dark preference.
   Keep the token values in sync with the rule above. */
@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    --bg: #0d131b;
    --bg-elevated: #141d28;
    --surface: #141d28;
    --surface-alt: #1b2634;
    --ink: #e9f0f7;
    --ink-soft: #c6d3e0;
    --muted: #9aacbd;
    --line: #26333f;
    --line-strong: #35485a;
    --accent: #6db3e0;
    --accent-ink: #b9dcf6;
    --accent-soft: #17293a;
    --accent-alt: #63d3c0;
    --accent-alt-soft: #122c28;
    --warn: #e0ad64;
    --warn-soft: #2a2115;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 14px 30px -20px rgba(0, 0, 0, 0.8);
    --on-accent: #0c1620;
    --mk-find: #1d4b44;
    --mk-warn: #4b3613;
    --pen: #dfe8f1;
    --band: #152130;
    --band-2: #1b2a3c;
    --c-id: #3987e5;
    --c-my: #d95926;
    --c-th: #199e70;
    --step-dim: 0.72;
  }
}

/* --- Base ---------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  line-height: 1.22;
  margin: 0 0 0.5em;
  color: var(--ink);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 2.9rem);
}

h2 {
  font-size: clamp(1.5rem, 2.6vw, 1.95rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-ink);
}

ul,
ol {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.08em 0.34em;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

:focus-visible {
  outline: 3px solid var(--accent-alt);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3.5rem;
  z-index: 50;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0.75rem;
}

/* --- Layout -------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 3.25rem 0;
  border-top: 1px solid var(--line);
}

.section:first-of-type {
  border-top: 0;
}

.section-head {
  max-width: 62ch;
  margin-bottom: 1.75rem;
}

.section-head p {
  color: var(--muted);
  margin-bottom: 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-alt);
  margin-bottom: 0.6rem;
}

.lede {
  font-size: 1.08rem;
  color: var(--ink-soft);
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* --- Header and navigation ---------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 66px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-role {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: block;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.94rem;
  text-decoration: none;
  white-space: nowrap;
}

.nav-list a:hover {
  background: var(--surface-alt);
  color: var(--ink);
}

.nav-list a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --- Buttons and controls ----------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.58rem 1.05rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.93rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  background: var(--surface-alt);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-ink);
  color: #fff;
}

html[data-theme="dark"] .btn-primary {
  color: #0c1620;
}

.btn-ghost {
  background: transparent;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0;
  white-space: nowrap;
  cursor: pointer;
}

.icon-btn:hover {
  background: var(--surface-alt);
}

/* --- Hero --------------------------------------------------------------- */

.hero {
  padding: 3.75rem 0 3rem;
  background:
    radial-gradient(900px 380px at 12% -10%, var(--accent-soft), transparent 70%),
    radial-gradient(760px 360px at 92% 8%, var(--accent-alt-soft), transparent 72%);
}

.hero-text {
  max-width: 68ch;
}

.hero-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
  justify-content: space-between;
}

.hero-layout .hero-text {
  flex: 1 1 30rem;
}

/* Portrait on the web CV pages. The one-page CV sizes its own copy in
   cv-print.css so the printed width stays a fixed number of millimetres. */
.cv-photo-page {
  flex: 0 0 auto;
  width: clamp(9rem, 20vw, 12rem);
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-name {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-alt);
  margin-bottom: 0.6rem;
}

.hero-role {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--accent-ink);
  font-weight: 600;
  margin-bottom: 1rem;
}

.fact-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 1.15rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  list-style: none;
}

.fact-strip li {
  margin: 0;
}

.fact-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-ink);
}

.fact-label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.45;
}

/* --- Cards and callouts ------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
  box-shadow: var(--shadow);
}

.embedded-work {
  margin: 1.25rem 0;
}

.tableau-showcase {
  width: 100%;
  margin: 2rem auto 0;
  padding: clamp(0.75rem, 2vw, 1.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.embedded-work iframe {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
}

.tableau-frame {
  min-height: 640px;
  height: min(72vw, 900px);
}

.certificate-frame {
  min-height: 600px;
  height: min(141.4vw, 1000px);
}

.embedded-work figcaption {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.card > :last-child {
  margin-bottom: 0;
}

.card h3 {
  margin-bottom: 0.35rem;
}

.card-tag {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-alt);
  margin-bottom: 0.5rem;
}

.card-meta {
  font-size: 0.86rem;
  color: var(--muted);
}

.card-list {
  margin: 0.6rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.94rem;
}

.callout {
  background: var(--accent-soft);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
}

.callout > :last-child {
  margin-bottom: 0;
}

.callout-note {
  background: var(--warn-soft);
  border-left-color: var(--warn);
}

.callout h3,
.callout h4 {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* --- Chips and tags ----------------------------------------------------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
}

.chips li {
  margin: 0;
}

.chip {
  display: inline-block;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.chip-accent {
  background: var(--accent-alt-soft);
  border-color: transparent;
  color: var(--ink);
}

/* --- External links ----------------------------------------------------- */

/* Links that leave the site open in a new tab, so warn the reader instead of
   letting the change of context come as a surprise. Suppressed when printing,
   where the CV's own link handling takes over. */
a[target="_blank"]::after {
  content: "\2197";
  margin-left: 0.18em;
  font-size: 0.82em;
  color: var(--muted);
}

/* --- Tables ------------------------------------------------------------- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  min-width: 520px;
}

caption {
  caption-side: top;
  text-align: left;
  padding: 0.9rem 1rem 0;
  color: var(--muted);
  font-size: 0.85rem;
}

th,
td {
  padding: 0.72rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

thead th {
  background: var(--surface-alt);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

tbody tr:last-child td {
  border-bottom: 0;
}

td.num,
th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.badge {
  display: inline-block;
  padding: 0.14rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-yes {
  background: var(--accent-alt-soft);
  color: var(--ink);
}

.badge-partial {
  background: var(--warn-soft);
  color: var(--ink);
}

.badge-no {
  background: var(--surface-alt);
  color: var(--muted);
}

.badge-sig {
  background: var(--accent-soft);
  color: var(--accent-ink);
}

/* --- Timeline ----------------------------------------------------------- */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line-strong);
}

.timeline > li {
  position: relative;
  margin: 0 0 1.6rem;
  padding: 0 0 0 1.5rem;
}

.timeline > li:last-child {
  margin-bottom: 0;
}

.timeline > li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.55rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
}

.timeline-when {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-alt);
  margin-bottom: 0.2rem;
}

.timeline h3 {
  margin-bottom: 0.15rem;
}

.timeline .timeline-org {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

/* Course mark and cohort context for an assessed project. */
.timeline .timeline-grade {
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}

.timeline .timeline-grade strong {
  color: var(--accent-ink);
  font-weight: 700;
}

/* --- Figures ------------------------------------------------------------ */

figure {
  margin: 1.75rem 0;
}

figure img,
figure svg {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

figcaption {
  margin-top: 0.65rem;
  font-size: 0.87rem;
  color: var(--muted);
}

.formula {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

/* --- Link lists --------------------------------------------------------- */

.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.link-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
}

.link-list li:last-child {
  border-bottom: 0;
}

.link-list a {
  font-weight: 600;
}

.link-list .link-note {
  display: block;
  font-size: 0.86rem;
  color: var(--muted);
}

/* --- Footer ------------------------------------------------------------- */

.site-footer {
  padding: 2.75rem 0 2rem;
  background: var(--surface);
  border-top: 1px solid var(--line);
  margin-top: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.site-footer h2 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.7rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li + li {
  margin-top: 0.35rem;
}

.footer-legal {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-legal p {
  margin-bottom: 0.4rem;
}

/* --- Utilities ---------------------------------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.nowrap {
  white-space: nowrap;
}

/* The mobile navigation button is only meaningful when JavaScript is on. */
.nav-toggle {
  display: none;
}

/* --- Step-through stories (assets/js/story.js) ---------------------------- */

/* The hidden attribute must win over component display rules (.icon-btn,
   .jump-bar), because story.js shows and hides controls with it. */
[hidden] {
  display: none !important;
}

/* Everything below needs JavaScript; without it the pages show their tables
   and lists exactly as before. story-off is set when story.js fails to load
   (the script tag's onerror) or stops with an error, with the same result. */
html:not(.js) .story-section,
html:not(.js) .cv-tour,
html:not(.js) .evidence,
html:not(.js) .cohort,
html.story-off .story-section,
html.story-off .cv-tour,
html.story-off .evidence,
html.story-off .cohort {
  display: none;
}

/* Marks: Slidev's v-mark in the site palette. <mark> keeps its meaning without
   the browser's yellow, and the text darkens only once its mark is drawn. */
mark.mk {
  background-color: transparent;
  color: inherit;
  border-radius: 0.22em;
  padding: 0 0.08em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  background-repeat: no-repeat;
  transition: background-size 0.75s cubic-bezier(0.25, 0.8, 0.25, 1), color 0.4s ease;
}

.mk--find,
.mk--warn {
  background-image: linear-gradient(var(--mk-c), var(--mk-c));
  background-size: 0% 100%;
  background-position: 0 50%;
}

.mk--find { --mk-c: var(--mk-find); }
.mk--warn { --mk-c: var(--mk-warn); }

.mk--key {
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 0.13em;
  background-position: 0 94%;
  padding-bottom: 0.06em;
}

.mk.is-on { color: var(--ink); }
.mk--find.is-on,
.mk--warn.is-on { background-size: 100% 100%; }
.mk--key.is-on { background-size: 100% 0.13em; }

.mk--box {
  position: relative;
  white-space: nowrap;
  padding: 0 0.16em;
}

.mk--box::after {
  content: "";
  position: absolute;
  inset: -0.2em -0.3em -0.14em -0.32em;
  border: 2px solid var(--accent);
  border-radius: 0.9em 1.2em 0.8em 1.1em / 1.1em 0.8em 1.2em 0.9em;
  transform: rotate(-0.8deg);
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
  pointer-events: none;
}

.mk--box.is-on::after { clip-path: inset(0 0 0 0); }

/* Layout: steps on the left, one sticky stage on the right; under 900px each
   research step shows its own chart and the CV timeline sticks to the top. */
.story-container { max-width: 1240px; }
.story-section .section-head .btn { margin-top: 1rem; }
.story { position: relative; outline: none; }
.story-steps,
.story-stage { min-width: 0; }
.story-stage { display: none; }
.story .step { padding-block: 1.75rem; scroll-margin-top: calc(var(--story-header, 66px) + 12px); }
.story .step + .step { border-top: 1px solid var(--line); }
.step-text { max-width: 36rem; }

.step-kicker {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.75rem;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-alt);
}

.step-num {
  display: inline-grid;
  place-items: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  font-size: 0.82rem;
  letter-spacing: 0;
}

.js .story .step.is-active .step-num {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.story .step h3 { font-size: clamp(1.3rem, 2.2vw, 1.65rem); }
.story .step p { color: var(--ink-soft); }
.story .step .caution { font-size: 0.95rem; }
.story-cite { font-size: 0.86rem; font-weight: 600; }
.step-visual { margin-top: 0.75rem; }

.btn-small {
  padding: 0.36rem 0.8rem;
  font-size: 0.84rem;
  white-space: nowrap;
}

.btn kbd {
  font-size: 0.74em;
  background: transparent;
  border-color: currentColor;
  color: inherit;
  opacity: 0.75;
  padding: 0 0.3em;
}

.scene {
  margin: 1.25rem 0 0;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.95rem 1.1rem 0.9rem;
}

.scene-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.scene-title { font-size: 0.86rem; font-weight: 600; line-height: 1.35; color: var(--ink-soft); }
.scene-num { font-size: 0.74rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.scene-plot { position: relative; min-width: 0; min-height: 120px; container-type: inline-size; }
.scene-plot svg,
.stage-visual svg,
.cohort-plot svg { display: block; width: 100%; height: auto; overflow: visible; border: 0; border-radius: 0; background: none; }
.scene .ledger svg { border: 0; border-radius: 0; background: none; }

.scene figcaption,
.stage-caption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted);
}

.stage-inner {
  position: sticky;
  top: calc(var(--story-header, 66px) + 1rem);
  padding-bottom: 1.5rem;
}

.stage-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.stage-pills { display: flex; gap: 0.35rem; list-style: none; margin: 0; padding: 0; }
.stage-pills li { margin: 0; }

.stage-pills button {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--muted);
  font: 600 0.82rem/1 var(--font-sans);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.stage-pills button:hover { border-color: var(--accent); color: var(--ink); }
.stage-pills button.is-done { color: var(--ink); border-color: var(--accent); }
.stage-pills button[aria-current="step"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.stage-actions { display: flex; gap: 0.4rem; }
.stage-scenes { display: grid; }

.stage-scenes > .scene {
  grid-area: 1 / 1;
  align-self: start;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s linear 0.55s;
}

.stage-scenes > .scene.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s;
}

.stage-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.95rem 1.1rem 0.9rem;
}

.story:not(.is-ready) .story-stage { visibility: hidden; }

@media (min-width: 900px) {
  .js .story {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    column-gap: clamp(2rem, 4vw, 3.75rem);
  }

  .js .story-stage { display: block; }
  .js .story .step { min-height: 76vh; display: flex; align-items: center; padding-block: 3rem; }
  .js .story .step + .step { border-top: 0; }
  .js .story .step:first-child { min-height: 62vh; align-items: flex-start; padding-top: 0.5rem; }
  .js .story .step:last-child { min-height: 86vh; }
  /* --step-dim is set per theme so a faded step still reads at 4.5:1. */
  .js .story .step-text { opacity: var(--step-dim, 0.85); transition: opacity 0.45s ease; }
  .js .story .step.is-active .step-text { opacity: 1; }
  .js .story--cv .step { min-height: 64vh; }
}

@media (max-width: 899px) {
  .js .story--cv { display: flex; flex-direction: column; }

  .js .story--cv .story-stage {
    display: block;
    order: -1;
    position: sticky;
    top: var(--story-header, 66px);
    z-index: 5;
    margin-inline: -1.25rem;
    padding: 0.5rem 1.25rem 0.4rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  /* The timeline stays pinned above the steps, so a step reached by a link
     stops below it rather than behind it (story.js measures --story-stage). */
  .js .story--cv .step { scroll-margin-top: calc(var(--story-header, 66px) + var(--story-stage, 0px) + 12px); }

  .story--cv .stage-inner { position: static; padding: 0; }
  .story--cv .stage-top,
  .story--cv .stage-caption,
  .story--cv .stage-card .scene-head { display: none; }
  .story--cv .stage-card { padding: 0.5rem 0.6rem 0.35rem; box-shadow: none; }
}

/* Charts */
.viz text { font-family: var(--font-sans); font-size: 12px; fill: var(--muted); pointer-events: none; }
.viz .t-axis { font-size: 11.5px; fill: var(--muted); font-variant-numeric: tabular-nums; }
.viz .t-strong { fill: var(--ink-soft); font-weight: 600; }
.viz .t-label { fill: var(--ink); font-weight: 600; font-size: 12.5px; }
.viz .t-value { fill: var(--ink-soft); font-size: 12px; font-variant-numeric: tabular-nums; }
.viz .t-row { fill: var(--ink-soft); font-size: 12.5px; }
.viz .t-group { fill: var(--muted); font-size: 10.5px; font-weight: 700; letter-spacing: 0.12em; }
.viz .t-legend { fill: var(--muted); font-size: 11.5px; }
.viz .t-mult { fill: var(--ink); font-weight: 700; font-size: 12.5px; }
.viz .t-tl { fill: var(--ink-soft); font-size: 11.5px; font-weight: 600; }
.viz .t-halo { paint-order: stroke; stroke: var(--surface); stroke-width: 4px; stroke-linejoin: round; }
.viz path,
.viz circle,
.viz line { pointer-events: none; }
.viz .rule { stroke: var(--line-strong); stroke-width: 1; fill: none; }
.viz .gridline { stroke: var(--line); stroke-width: 1; fill: none; }
.viz .row-guide { stroke: var(--line); stroke-width: 1; fill: none; }
.viz .zero { stroke: var(--line-strong); stroke-width: 1.5; fill: none; }
.viz .thr { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 4; opacity: 0.75; fill: none; }
.viz .band { fill: var(--band); }
.viz .band-2 { fill: var(--band-2); }
.viz .series-line { fill: none; stroke-width: 2.5; stroke-linecap: round; }
.viz .ci { fill: none; stroke-width: 2; stroke-linecap: round; }
.viz .ci-sig { stroke: var(--accent); }
.viz .ci-ns { stroke: var(--muted); }
.viz .dot { stroke: var(--surface); stroke-width: 2; }
.viz .dot-sig { fill: var(--accent); }
.viz .dot-ns { fill: var(--muted); }
.viz .dot-marg { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.viz .pop,
.viz .grow { transform-box: fill-box; transform-origin: center; }
.viz .hit { fill: transparent; cursor: default; outline: none; pointer-events: all; }
.viz .hit:hover,
.viz .hit:focus-visible { fill: var(--accent-soft); fill-opacity: 0.6; }
.viz .leader { stroke: var(--muted); stroke-width: 1; fill: none; }
.viz .tl-bar,
.viz .tl-mark { fill: var(--line-strong); }
/* Items the current step is not about recede, but only their shapes: the labels
   stay at full strength in the muted colour, so they still read at 4.5:1. */
.viz .tl-item .tl-bar,
.viz .tl-item .tl-mark { opacity: 0.6; }
.viz .tl-item.is-focus .tl-bar,
.viz .tl-item.is-focus .tl-mark { opacity: 1; }
.viz .tl-item.is-focus .tl-bar,
.viz .tl-item.is-focus .tl-mark { fill: var(--accent); }
.viz .tl-item.is-open .tl-bar { fill: transparent; stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 4 4; }
.viz .tl-item.is-open.is-focus .tl-bar { fill: var(--accent-soft); stroke: var(--accent); }
.viz .tl-item:not(.is-focus) .t-tl { fill: var(--muted); font-weight: 500; }

/* Visitors who ask for more contrast get no dimming at all. */
@media (prefers-contrast: more) {
  .js .story .step-text,
  .viz .tl-item .tl-bar,
  .viz .tl-item .tl-mark { opacity: 1; }
}
.viz .cohort-top { fill: var(--accent-soft); }
.viz .cohort-mean { fill: var(--surface); stroke: var(--muted); stroke-width: 2; }
.viz .cohort-tick { stroke: var(--muted); stroke-width: 2; stroke-linecap: round; fill: none; }
.viz .cohort-me { fill: var(--accent); }

.viz .mk-pen {
  fill: none;
  stroke: var(--pen);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  opacity: 0;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.3, 0.7, 0.2, 1), opacity 0.15s ease;
}

.viz .mk-pen.warn { stroke: var(--warn); }
.viz .mk-pen.is-on { stroke-dashoffset: 0; opacity: 1; }
.viz .mk-tag,
.viz .mk-guide,
.viz text[data-mark] { opacity: 0; transition: opacity 0.45s ease; }
.viz .mk-tag.is-on,
.viz .mk-guide.is-on,
.viz text[data-mark].is-on { opacity: 1; }
.viz .mk-tag rect { fill: var(--mk-find); }
.viz .mk-tag.warn rect { fill: var(--mk-warn); }
.viz .mk-tag-text { fill: var(--ink); font-weight: 600; font-size: 12px; }
.viz .mk-guide { stroke: var(--pen); stroke-width: 1.2; stroke-dasharray: 2 4; fill: none; }

/* Claim ledger (research step 6) */
.ledger { display: grid; gap: 0.95rem; }

@container (min-width: 520px) {
  .ledger { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 1rem; align-items: start; }
  .ledger-group.next { grid-column: 1 / -1; }
}

.ledger-group h4 {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.ledger-group h4 svg { width: 1rem; height: 1rem; flex: 0 0 auto; }
.ledger-group.yes h4 { color: var(--accent-alt); }
.ledger-group.no h4 { color: var(--warn); }
.ledger-group.next h4 { color: var(--accent); }
.ledger-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; }

.ledger-item {
  display: grid;
  grid-template-columns: 1.3rem minmax(0, 1fr);
  gap: 0.55rem;
  align-items: start;
  margin: 0;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  opacity: 0.32;
  transform: translateY(4px);
  transition: opacity 0.45s ease, transform 0.45s ease;
  transition-delay: calc(var(--i, 0) * 90ms);
}

.ledger-item + .ledger-item { margin-top: 0; }
.ledger-group.is-on .ledger-item { opacity: 1; transform: none; }
.ledger-item svg { width: 1.1rem; height: 1.1rem; margin-top: 0.15rem; }
.ledger-group.yes svg { color: var(--accent-alt); }
.ledger-group.no svg { color: var(--warn); }
.ledger-group.next svg { color: var(--accent); }
.ledger-item strong { display: block; font-size: 0.9rem; line-height: 1.35; font-weight: 600; color: var(--ink); }
.ledger-item span { display: block; font-size: 0.78rem; line-height: 1.45; color: var(--muted); font-variant-numeric: tabular-nums; }

/* Rows a chart cites, and CV lines that prove a skill */
[data-cite-id],
[data-ev] {
  transition: background-color 0.5s ease, box-shadow 0.5s ease, outline-color 0.3s ease;
}

tr.is-cited > th,
tr.is-cited > td { background-color: var(--mk-find); }

p.is-cited,
li.is-cited,
li.ev-on {
  background-color: var(--mk-find);
  box-shadow: 0 0 0 0.35rem var(--mk-find);
  border-radius: 6px;
}

li.ev-current { outline: 2px solid var(--accent); outline-offset: 0.35rem; }

/* Cohort strips (cv.html) */
.cohort { margin: 0.4rem 0 0.75rem; max-width: 30rem; }
.cohort-plot { min-width: 0; }
.cohort-plot svg { display: block; width: 100%; height: auto; overflow: visible; }

.cohort-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.9rem;
  margin: 0.2rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.cohort-legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.ck { display: inline-block; flex: 0 0 auto; }
.ck-me { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.ck-mean { width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--muted); }
.ck-uq,
.ck-max { width: 2px; height: 12px; border-radius: 1px; background: var(--muted); }
.ck-band { width: 14px; height: 8px; border-radius: 4px; background: var(--accent-soft); border: 1px solid var(--line-strong); }

/* Evidence index (cv.html) */
.evidence {
  margin: 0 0 1.5rem;
  padding: 1rem 1.15rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

.evidence h3 { margin: 0 0 0.25rem; font-family: var(--font-sans); font-size: 1rem; font-weight: 700; }
.evidence p { margin: 0; }
.evidence-chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.75rem; }

.chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.34rem 0.5rem 0.34rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
  font: 600 0.84rem/1.3 var(--font-sans);
  cursor: pointer;
}

.chip-btn:hover { border-color: var(--accent); color: var(--ink); }
.chip-btn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }

.ev-count {
  display: inline-grid;
  place-items: center;
  min-width: 1.4rem;
  height: 1.4rem;
  padding: 0 0.3rem;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--muted);
  font-size: 0.74rem;
  font-variant-numeric: tabular-nums;
}

.evidence-status { margin-top: 0.6rem; min-height: 1.2em; font-size: 0.86rem; color: var(--ink-soft); }

/* Floating bar while away from the starting point */
.jump-bar {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 1rem);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  max-width: calc(100vw - 2rem);
  padding: 0.35rem 0.4rem 0.35rem 0.9rem;
  transform: translateX(-50%);
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  font-size: 0.85rem;
}

.jump-bar [data-jump-label] { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink-soft); }

/* Presentation mode */
html.is-presenting,
html.is-presenting body { overflow: hidden; }

.story.is-presenting {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  grid-template-rows: minmax(0, 1fr);
  column-gap: clamp(1.5rem, 4vw, 4.5rem);
  align-items: center;
  padding: calc(env(safe-area-inset-top, 0px) + 4.4rem) max(clamp(20px, 5vw, 80px), env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 4.8rem) max(clamp(20px, 5vw, 80px), env(safe-area-inset-left, 0px));
  overflow-y: auto;
  background: var(--bg);
}

.story.is-presenting .story-steps { display: grid; align-self: center; }

.story.is-presenting .step {
  grid-area: 1 / 1;
  display: block;
  min-height: 0;
  padding: 0;
  border: 0;
  visibility: hidden;
  opacity: 0;
  transform: translateX(-14px);
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s linear 0.5s;
}

.story.is-presenting .step.is-active {
  visibility: visible;
  opacity: 1;
  transform: none;
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s;
}

.story.is-presenting .step-text { opacity: 1; max-width: 40rem; }
.story.is-presenting .step h3 { font-size: clamp(1.6rem, 3vw, 2.5rem); }
.story.is-presenting .step p { font-size: clamp(1.02rem, 1.4vw, 1.24rem); }
.story.is-presenting .story-cite { display: none; }
.story.is-presenting .story-stage { display: block; align-self: center; order: 0; position: static; margin: 0; padding: 0; border: 0; background: none; }
.story.is-presenting .stage-inner { position: static; padding: 0; }
.story.is-presenting .stage-top { display: none; }
.story.is-presenting .stage-caption { display: block; }
.story.is-presenting .ledger-group:not(.is-on),
.story.is-presenting .ledger-group:not(.is-on) .ledger-item { opacity: 0; }

@media (max-width: 899px) {
  .story.is-presenting {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-content: start;
    row-gap: 1.1rem;
  }

  .story.is-presenting .step h3 { font-size: 1.45rem; }
  .story.is-presenting .step p { font-size: 1rem; }
}

.present-ui { position: fixed; inset: 0; z-index: 75; pointer-events: none; }

.present-top,
.present-bottom {
  position: absolute;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  pointer-events: none;
}

.present-top > *,
.present-bottom > * { pointer-events: auto; flex-shrink: 0; }
.present-top { top: 0; padding-top: calc(env(safe-area-inset-top, 0px) + 0.9rem); }
.present-bottom { bottom: 0; padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 1rem); }

.present-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 1;
  min-width: 0;
  margin-right: auto;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.present-brand .brand-mark { width: 28px; height: 28px; font-size: 0.72rem; border-radius: 8px; }
.present-brand .present-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.present-count,
.present-timer { font-size: 0.84rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.present-timer.is-over { color: var(--warn); font-weight: 700; }
.present-track { position: relative; flex: 1 1 auto; height: 4px; border-radius: 999px; background: var(--line); }
.present-fill { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: inherit; background: var(--accent); transition: width 0.35s ease; }
.present-tick { position: absolute; top: -3px; width: 2px; height: 10px; border-radius: 1px; background: var(--line-strong); }
.present-hint { font-size: 0.78rem; color: var(--muted); white-space: nowrap; }

@media (max-width: 600px) {
  .present-hint,
  .present-count,
  .present-brand .present-title { display: none; }
}

/* Tooltip and toast */
.story-tip {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 90;
  max-width: 280px;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  color: var(--ink);
  font-size: 0.8rem;
  line-height: 1.4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.12s ease;
}

.story-tip.is-on { opacity: 1; }
.story-tip strong { display: block; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.story-tip span { color: var(--muted); }

.story-toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 4.5rem);
  z-index: 95;
  max-width: calc(100vw - 32px);
  padding: 0.55rem 1rem;
  transform: translate(-50%, 8px);
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.85rem;
  overflow-wrap: anywhere;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.story-toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* Chinese headings break only between phrases (<wbr> in i18n.js). */
:lang(zh) .story h3,
:lang(zh) .story-section h2,
:lang(zh) .cv-tour h2 { word-break: keep-all; overflow-wrap: break-word; }

.story-no-anim *,
.story-no-anim *::before,
.story-no-anim *::after { transition: none !important; }

/* --- Responsive --------------------------------------------------------- */

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .site-header .container {
    gap: 0.5rem;
  }

  .js .nav-toggle {
    display: inline-grid;
  }

  .js .primary-nav {
    flex-basis: 100%;
    order: 3;
  }

  .js .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding-bottom: 0.75rem;
  }

  .js .nav-list.is-open {
    display: flex;
  }

  .js .nav-list a {
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.75rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .hero {
    padding: 2.75rem 0 2.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}

/* --- Print (CV and research pages) -------------------------------------- */

@media print {
  html[data-theme] body.cv-page {
    --bg: #ffffff;
    --bg-elevated: #ffffff;
    --surface: #ffffff;
    --surface-alt: #f3f6f8;
    --ink: #17212b;
    --ink-soft: #354555;
    --muted: #4b5b69;
    --line: #d5dde5;
    --line-strong: #b8c5d1;
    --accent: #15547d;
    --accent-ink: #123c59;
    --accent-soft: #e9f1f6;
    --accent-alt: #176d63;
    --accent-alt-soft: #e7f2f0;
    --warn: #80500c;
    --warn-soft: #faf1df;
    --shadow: none;
    background: #ffffff;
    color: #17212b;
    font-family: Arial, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  }

  html[data-theme] body.cv-page .hero {
    background: #ffffff;
  }

  html[data-theme] body.cv-page .card,
  html[data-theme] body.cv-page .cv-sheet {
    background: #ffffff;
    color: #17212b;
    box-shadow: none;
  }

  html[data-theme] body.cv-page h1,
  html[data-theme] body.cv-page h2,
  html[data-theme] body.cv-page h3,
  html[data-theme] body.cv-page h4 {
    color: #17212b;
    font-family: Arial, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  }

  html[data-theme] body.cv-page p,
  html[data-theme] body.cv-page li {
    color: #273746;
  }

  html[data-theme] body.cv-page .muted,
  html[data-theme] body.cv-page .small {
    color: #4b5b69;
  }

  :root {
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-alt: #ffffff;
    --ink: #000000;
    --ink-soft: #1a1a1a;
    --muted: #333333;
    --line: #b9b9b9;
    --line-strong: #8a8a8a;
    --accent: #000000;
    --accent-ink: #000000;
    --accent-alt: #000000;
    --shadow: none;
  }

  @page {
    margin: 14mm 15mm;
  }

  body {
    font-size: 10.5pt;
    line-height: 1.42;
    background: #fff;
    color: #000;
  }

  .site-header,
  .site-footer,
  .no-print,
  .screen-only,
  .skip-link,
  .story-tip,
  .story-toast,
  .jump-bar,
  .present-ui {
    display: none !important;
  }

  .is-cited,
  .is-cited > *,
  .ev-on,
  .ev-current {
    background: none !important;
    box-shadow: none !important;
    outline: none !important;
  }

  .container {
    max-width: none;
    padding: 0;
  }

  .section {
    padding: 0.9rem 0;
    border-top: 1px solid var(--line);
  }

  .hero {
    padding: 0 0 0.8rem;
    background: none;
  }

  .card,
  .table-wrap,
  .cv-photo-page,
  figure img,
  figure svg {
    box-shadow: none;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  h1,
  h2,
  h3,
  .timeline h3 {
    break-after: avoid;
    page-break-after: avoid;
  }

  .timeline > li,
  tr {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: none;
  }

  .print-url::after {
    content: " (" attr(href) ")";
    font-size: 0.82em;
    color: #333;
  }

  a[target="_blank"]::after {
    content: none;
  }

  .grid {
    gap: 0.6rem;
  }
}