/* =========================================================
   太子的國際政治跟總體經濟 — Editorial Blog Stylesheet
   Clean, light editorial style. Ink-navy accent on warm cream.
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.1vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.4vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1.2rem + 3.6vw, 4.5rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 680px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: "Noto Serif TC", "Source Serif 4", Georgia, serif;
  --font-body: "Noto Sans TC", "Inter", "Helvetica Neue", sans-serif;
}

/* ---------- Light Mode ---------- */
:root,
[data-theme="light"] {
  --color-bg: #faf7f1;
  --color-surface: #ffffff;
  --color-surface-2: #fbf9f5;
  --color-surface-offset: #f2ede4;
  --color-border: #e4ddd1;
  --color-divider: #ece6da;

  --color-text: #1b2230;
  --color-text-muted: #5f6573;
  --color-text-faint: #9a9eaa;
  --color-text-inverse: #f7f4ee;

  --color-primary: #16305c;
  --color-primary-hover: #0f2444;
  --color-primary-soft: #e7ecf4;

  --color-accent: #9a6a2f; /* warm brass — used very sparingly */

  --shadow-sm: 0 1px 2px rgba(27, 34, 48, 0.05);
  --shadow-md: 0 6px 20px rgba(27, 34, 48, 0.08);
  --shadow-lg: 0 18px 48px rgba(27, 34, 48, 0.12);
}

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
  --color-bg: #14161c;
  --color-surface: #1b1e26;
  --color-surface-2: #20242e;
  --color-surface-offset: #232733;
  --color-border: #323744;
  --color-divider: #2a2e39;

  --color-text: #e4e6ec;
  --color-text-muted: #9aa0ad;
  --color-text-faint: #6a7081;
  --color-text-inverse: #14161c;

  --color-primary: #8fb2e8;
  --color-primary-hover: #abc6f0;
  --color-primary-soft: #222b3c;

  --color-accent: #d3a564;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14161c;
    --color-surface: #1b1e26;
    --color-surface-2: #20242e;
    --color-surface-offset: #232733;
    --color-border: #323744;
    --color-divider: #2a2e39;
    --color-text: #e4e6ec;
    --color-text-muted: #9aa0ad;
    --color-text-faint: #6a7081;
    --color-text-inverse: #14161c;
    --color-primary: #8fb2e8;
    --color-primary-hover: #abc6f0;
    --color-primary-soft: #222b3c;
    --color-accent: #d3a564;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
  }
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}

img,
picture,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role="list"] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-interactive);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

::selection {
  background: var(--color-primary-soft);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-24));
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

[data-theme="dark"] .eyebrow {
  color: var(--color-primary);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: var(--text-xl);
}

.section-head .eyebrow {
  margin-bottom: var(--space-2);
  display: block;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.brand svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text .brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
}

.brand-text .brand-sub {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 600;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
}

.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.4rem;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.icon-btn:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.menu-toggle {
  display: none;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition-interactive);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ---------- Hero / Featured ---------- */
.hero {
  padding-block: clamp(var(--space-10), 6vw, var(--space-20)) var(--space-8);
}

.hero-intro {
  max-width: 52ch;
  margin-bottom: var(--space-12);
}

.hero-intro h1 {
  font-size: var(--text-2xl);
  margin-block: var(--space-3) var(--space-5);
}

.hero-intro p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.featured {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(var(--space-6), 4vw, var(--space-12));
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.featured-media {
  height: 100%;
  min-height: 320px;
  position: relative;
  order: 2;
}

.featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-body {
  padding: clamp(var(--space-6), 4vw, var(--space-12));
  order: 1;
}

.featured-body .tag-row {
  margin-bottom: var(--space-4);
}

.featured-body h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  line-height: 1.25;
}

.featured-body h2 a:hover {
  color: var(--color-primary);
}

.featured-body p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* ---------- Tags / category chips ---------- */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.chip {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.byline {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.byline .avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), #2d4f86);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

/* ---------- Category filter ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}

.filter-btn {
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-surface);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ---------- Article grid ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(var(--space-6), 3vw, var(--space-8));
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-soft);
}

.post-card-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-surface-offset);
}

.post-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.post-card:hover .post-card-media img {
  transform: scale(1.04);
}

.post-card-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.post-card-body h3 {
  font-size: var(--text-lg);
  line-height: 1.3;
}

.post-card-body h3 a:hover {
  color: var(--color-primary);
}

.post-card-body .excerpt {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  flex: 1;
}

.post-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.post-card.hidden {
  display: none;
}

/* ---------- About teaser ---------- */
.about-teaser {
  background: var(--color-surface-offset);
  border-radius: var(--radius-xl);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

.about-portrait {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--color-primary), #2d4f86 70%, #3a6098);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  box-shadow: var(--shadow-md);
}

.about-grid h2 {
  font-size: var(--text-xl);
  margin-block: var(--space-3) var(--space-5);
}

.about-grid p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.about-stats {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.about-stats .stat .num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  display: block;
}

.about-stats .stat .label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.about-stats a.stat--link {
  display: block;
  text-decoration: none;
  transition: opacity var(--transition-interactive);
}
.about-stats a.stat--link:hover {
  opacity: 0.82;
}
.about-stats a.stat--link:hover .num {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.about-stats a.stat--link .label {
  color: var(--color-primary);
}

.inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: opacity var(--transition-interactive);
}
.inline-link:hover {
  opacity: 0.78;
}

/* ---------- Newsletter ---------- */
.newsletter {
  position: relative;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  overflow: hidden;
  text-align: center;
}

[data-theme="dark"] .newsletter {
  background: linear-gradient(135deg, #1c3055, #102444);
  border: 1px solid var(--color-border);
}

.newsletter::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.08) 1px, transparent 0);
  background-size: 22px 22px;
  pointer-events: none;
}

.newsletter > * {
  position: relative;
}

.newsletter .eyebrow {
  color: rgba(255, 255, 255, 0.75);
}

.newsletter h2 {
  color: #fff;
  font-size: var(--text-xl);
  margin-block: var(--space-3) var(--space-4);
}

.newsletter p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 48ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.subscribe-form {
  display: flex;
  gap: var(--space-3);
  max-width: 460px;
  margin-inline: auto;
  flex-wrap: wrap;
  justify-content: center;
}

.subscribe-form input {
  flex: 1;
  min-width: 220px;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.subscribe-form input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.subscribe-form input:focus-visible {
  outline-color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.subscribe-form .btn--white {
  background: #fff;
  color: var(--color-primary);
}

.subscribe-form .btn--white:hover {
  background: rgba(255, 255, 255, 0.88);
  transform: translateY(-1px);
}

.form-note {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-4);
  margin-bottom: 0;
}

.form-success {
  display: none;
  font-weight: 600;
  color: #fff;
  margin-top: var(--space-4);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-2);
  padding-block: var(--space-16) var(--space-10);
  margin-top: var(--space-12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-grid h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-weight: 700;
}

.footer-col p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 36ch;
  margin-top: var(--space-4);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col ul a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.footer-col ul a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ---------- Article page ---------- */
.article-hero {
  padding-block: clamp(var(--space-10), 6vw, var(--space-16)) var(--space-8);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.back-link:hover {
  color: var(--color-primary);
}

.article-hero h1 {
  font-size: var(--text-2xl);
  margin-block: var(--space-5) var(--space-6);
  line-height: 1.18;
}

.article-hero .lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: var(--space-8);
}

.article-byline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-block: 1px solid var(--color-divider);
  flex-wrap: wrap;
}

.article-figure {
  margin-block: var(--space-10);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.article-figure img {
  width: 100%;
}

.article-figure video {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  background: #16305c;
}

.video-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-block: var(--space-10) var(--space-3);
  padding: 6px 14px;
  border-radius: 999px;
  background: #16305c;
  color: #f3e9d2;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .04em;
}

.video-eyebrow svg { flex: none; }

.article-figure--video { margin-block: 0 var(--space-10); }

.article-figure figcaption {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  text-align: center;
}

.prose {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
}

.prose > * + * {
  margin-top: var(--space-6);
}

.prose h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-12);
  margin-bottom: var(--space-2);
}

.prose h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-8);
}

.prose p {
  color: var(--color-text);
}

.prose ul,
.prose ol {
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.prose li::marker {
  color: var(--color-primary);
}

.prose strong {
  font-weight: 700;
  color: var(--color-text);
}

.prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-2) var(--space-6);
  margin-block: var(--space-8);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-text);
  font-style: italic;
}

.prose blockquote cite {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--color-text-muted);
}

.callout {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-block: var(--space-8);
}

.callout h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.callout p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.article-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  line-height: 1.6;
}

/* ---------- Prose data tables ---------- */
.table-wrap {
  margin-block: var(--space-8);
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 540px;
}

.data-table thead th {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-weight: 700;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  white-space: nowrap;
}

.data-table tbody td {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text);
  vertical-align: middle;
}

.data-table tbody tr:nth-child(even) {
  background: var(--color-surface-2);
}

.data-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.data-table .ticker {
  font-weight: 700;
  color: var(--color-text);
}

.data-table .role {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

/* Simplified two-column variant (no price / change / market cap) */
.data-table--simple {
  min-width: 0;
}

.data-table--simple .role {
  color: var(--color-text);
  font-size: var(--text-sm);
}

.data-table--simple .ticker {
  width: 42%;
}

.pos { color: #1f9d5c; font-weight: 700; }
.neg { color: #d24b4b; font-weight: 700; }
[data-theme="dark"] .pos { color: #4bcd86; }
[data-theme="dark"] .neg { color: #f07a7a; }

/* Article source list */
.sources-title {
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.sources-list {
  margin: 0 0 var(--space-8);
  padding-left: var(--space-5);
  list-style: decimal;
}

.sources-list li {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
}

.sources-list li a {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-fast);
}

.sources-list li a:hover {
  color: var(--color-primary);
}

.table-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  font-style: italic;
}

/* Thesis chain steps */
.chain {
  margin-block: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.chain-step {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.chain-step .step-no {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--text-lg);
  color: var(--color-primary);
  line-height: 1.2;
  flex-shrink: 0;
}

.chain-step .step-body strong { display: block; margin-bottom: 2px; }
.chain-step .step-body span { color: var(--color-text-muted); font-size: var(--text-sm); }

/* Timeline */
.timeline {
  margin-block: var(--space-8);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
}

.timeline-card {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.timeline-card .year {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--text-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.timeline-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

.related {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
}

/* ---------- About page ---------- */
.about-hero {
  padding-block: clamp(var(--space-12), 7vw, var(--space-20)) var(--space-8);
}

.about-hero-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

.about-big-portrait {
  width: 100%;
  aspect-ratio: 1;
  max-width: 320px;
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--color-primary), #2d4f86 70%, #3a6098);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

.about-hero-grid h1 {
  font-size: var(--text-2xl);
  margin-block: var(--space-4) var(--space-5);
}

.about-hero-grid .lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.value-card .ico {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.value-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.value-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.focus-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.focus-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.focus-item .num {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.focus-item h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.focus-item p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

/* ---------- Mobile nav ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 4.5rem 0 0;
  z-index: 40;
  background: var(--color-bg);
  padding: var(--space-8) var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .value-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .featured {
    grid-template-columns: 1fr;
  }
  .featured-media {
    order: 1;
    min-height: 220px;
    aspect-ratio: 16 / 10;
  }
  .featured-body {
    order: 2;
  }
  .about-grid,
  .about-hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-portrait,
  .about-big-portrait {
    margin-inline: auto;
  }
  .about-stats {
    justify-content: center;
  }
  .focus-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .container {
    padding-inline: var(--space-5);
  }
}

/* ---------- Tip / Donation ---------- */
.tip-card {
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 3.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, 18px);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.tip-card .eyebrow { color: var(--color-accent); }

.tip-card h2 {
  margin: var(--space-2) 0 var(--space-3);
}

.tip-lead {
  max-width: 56ch;
  margin: 0 auto var(--space-7);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.tip-amounts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.tip-amount {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-4) var(--space-2);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.tip-amount--free {
  border-style: dashed;
  background: transparent;
}

.tip-num {
  font-family: var(--font-display, var(--font-body));
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
  white-space: nowrap;
}

.tip-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.tip-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.tip-btn {
  padding: 0.85rem 2.6rem;
  font-size: var(--text-base);
}

.tip-methods-line {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

.tip-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.tip-note strong {
  color: var(--color-text);
  font-weight: 700;
}

@media (max-width: 560px) {
  .tip-amounts {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* BOJ infographic embedded figures (portrait gold-on-black) */
.article-figure--infographic {
  max-width: 560px;
  margin-inline: auto;
}
.article-figure--infographic img {
  display: block;
}

/* In-article tip / donation callout */
.article-tip {
  margin: 3rem 0 2rem;
  padding: 2rem 1.75rem;
  border: 1px solid var(--color-border, rgba(22, 48, 92, 0.18));
  border-left: 4px solid var(--color-accent, #16305c);
  border-radius: 14px;
  background: color-mix(in srgb, var(--color-accent, #16305c) 5%, transparent);
  text-align: center;
}
.article-tip .eyebrow { color: var(--color-accent); display: block; margin-bottom: 0.6rem; }
.article-tip p {
  max-width: 34em;
  margin: 0 auto 1.2rem;
  line-height: 1.9;
}
.article-tip .tip-btn { margin-bottom: 0.9rem; }
.article-tip .tip-note {
  font-size: 0.82rem;
  opacity: 0.75;
  margin: 0;
}

/* ---------- Music Section ---------- */
.music-card {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-md);
}
.music-video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0d0f14;
}
.music-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.music-body h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin: var(--space-3) 0 var(--space-1);
}
.music-credit {
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}
.music-body p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
@media (max-width: 860px) {
  .music-card { grid-template-columns: 1fr; }
}

/* ---------- MV Grid (music.html + 首頁音樂區) ---------- */
.music-sub {
  color: var(--color-text-muted);
  margin: var(--space-2) 0 0;
  max-width: 46ch;
}
.mv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: var(--space-8);
}
.mv-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.mv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.mv-thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  background: #0d0f14;
  overflow: hidden;
}
.mv-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.mv-card:hover .mv-thumb img { transform: scale(1.04); }
.mv-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(13, 15, 20, 0.72);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  display: grid;
  place-items: center;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.mv-play::after {
  content: "";
  display: block;
  margin-left: 4px;
  border-style: solid;
  border-width: 11px 0 11px 18px;
  border-color: transparent transparent transparent #fff;
}
.mv-thumb:hover .mv-play { background: var(--color-accent, #b8862d); border-color: transparent; }
.mv-thumb iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.mv-body { padding: 1rem 1.15rem 1.3rem; display: flex; flex-direction: column; gap: 0.4rem; }
.mv-num {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  font-weight: 700;
}
.mv-body h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  line-height: 1.5;
  margin: 0;
}
.mv-body p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
  margin: 0;
}
.music-actions { display: flex; justify-content: center; margin-top: var(--space-8); }
.mv-hero {
  padding: clamp(4.5rem, 8vw, 6.5rem) 0 clamp(1.5rem, 3vw, 2.5rem);
}
@media (max-width: 960px) { .mv-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .mv-grid { grid-template-columns: 1fr; } }

/* ===== Prose comparison table (2026-07-11) ===== */
.prose .table-wrap { overflow-x: auto; margin: 1.8rem 0; border: 1px solid var(--border, rgba(22,48,92,.15)); border-radius: 12px; }
.prose table { width: 100%; border-collapse: collapse; font-size: .92rem; line-height: 1.55; min-width: 560px; }
.prose thead th { background: var(--accent, #16305c); color: #fff; text-align: left; padding: .7rem .9rem; font-weight: 700; white-space: nowrap; }
.prose tbody th { text-align: left; padding: .65rem .9rem; font-weight: 700; color: var(--accent, #16305c); white-space: nowrap; vertical-align: top; }
.prose tbody td { padding: .65rem .9rem; vertical-align: top; }
.prose tbody tr:nth-child(even) { background: rgba(22,48,92,.045); }
.prose tbody tr + tr { border-top: 1px solid rgba(22,48,92,.1); }
[data-theme="dark"] .prose thead th { background: #2b4a86; }
[data-theme="dark"] .prose tbody th { color: #9db8e8; }
[data-theme="dark"] .prose tbody tr:nth-child(even) { background: rgba(157,184,232,.06); }
[data-theme="dark"] .prose tbody tr + tr { border-top-color: rgba(157,184,232,.14); }