/* =============================================================
   Tommy · Bit by Bit — Editorial / scholarly-luxe redesign
   Typography: Fraunces (display) + Geist (body) + JetBrains Mono
   Palette:    warm-black ivory · single amber accent
   ============================================================= */

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

:root {
  /* Surfaces */
  --bg:            #0e0d0c;          /* warm near-black */
  --bg-elev:       #16140f;          /* slightly raised paper */
  --paper:         rgba(244, 237, 224, 0.022);
  --paper-hover:   rgba(244, 237, 224, 0.04);

  /* Ink */
  --ink:           #efe6d4;          /* warm ivory */
  --ink-muted:     #b3a892;          /* aged paper text */
  --ink-faded:     #7a7363;          /* marginalia */
  --ink-whisper:   #4a4639;          /* hairlines */

  /* Single accent — warm amber */
  --accent:        #d39a5b;
  --accent-soft:   #c79658;
  --accent-deep:   #a86a2e;
  --accent-glow:   rgba(211, 154, 91, 0.18);

  /* Hairline / rule */
  --rule:          rgba(244, 237, 224, 0.10);
  --rule-strong:   rgba(244, 237, 224, 0.18);

  /* Type scale */
  --serif:         "Fraunces", "Noto Serif SC", "Songti SC", "Source Han Serif SC", Georgia, serif;
  --sans:          "Geist", "Inter", "PingFang SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:          "JetBrains Mono", "SF Mono", "Menlo", monospace;

  /* Motion */
  --ease:          cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-quick:       260ms var(--ease);
  --t-soft:        520ms var(--ease);
  --t-slow:        900ms var(--ease);
}

/* ---------- Reset ---------- */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.95rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

::selection {
  background: var(--accent-glow);
  color: var(--ink);
}

/* ---------- Atmosphere: paper grain + single warm glow ---------- */

.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.95  0 0 0 0 0.91  0 0 0 0 0.84  0 0 0 0.55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.warm-glow {
  position: fixed;
  top: -260px;
  left: 50%;
  translate: -50% 0;
  width: 1100px;
  height: 720px;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 55% at 50% 50%,
      rgba(211, 154, 91, 0.13),
      rgba(211, 154, 91, 0.05) 45%,
      transparent 70%);
  filter: blur(20px);
  animation: drift 32s ease-in-out infinite;
}

@keyframes drift {
  0%, 100% { translate: -50% 0; opacity: 1; }
  50%      { translate: calc(-50% + 40px) -20px; opacity: 0.85; }
}

/* Lift content above atmosphere */
.site-header, .content, .site-footer, .theme-toggle { position: relative; z-index: 1; }

/* ---------- Masthead (top meta-line) ---------- */

.site-header {
  padding: 6.5rem 2rem 4.25rem;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}

.masthead {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faded);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fade-up 1.6s var(--ease) 0.2s forwards;
}

.masthead-rule {
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--rule-strong);
}

/* ---------- Title ---------- */

.site-title {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.022em;
  color: var(--ink);
  font-feature-settings: "ss01", "ss02";
  display: grid;
  grid-template-columns: auto auto;
  grid-template-areas:
    "avatar name"
    ".      sub";
  column-gap: clamp(0.9rem, 1.7vw, 1.35rem);
  row-gap: 0.6rem;
  justify-content: center;
  align-items: center;
}

/* Frame holds the reveal animation; inner img owns its own hover transform */
.title-avatar-frame {
  grid-area: avatar;
  align-self: center;
  display: block;
  border-radius: 50%;
  opacity: 0;
  transform: translateY(8px);
}

.site-title.done .title-avatar-frame {
  animation: fade-up 1.2s var(--ease) 0.38s forwards;
}

/* Editorial portrait — sized as ornament beside the wordmark */
.title-avatar {
  display: block;
  width: clamp(70px, 6.6vw, 92px);
  height: clamp(70px, 6.6vw, 92px);
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 16%;
  transition: filter 700ms var(--ease), transform 500ms var(--ease), box-shadow 700ms var(--ease);
}

.title-avatar:hover {
  transform: scale(1.03);
}

[data-theme="light"] .title-avatar {
  filter:
    grayscale(0.18)
    sepia(0.10)
    contrast(1.10)
    saturate(0.96)
    brightness(0.99);
  box-shadow:
    0 6px 20px -10px rgba(38, 30, 18, 0.30),
    0 18px 44px -22px rgba(38, 30, 18, 0.22);
}

[data-theme="light"] .title-avatar:hover {
  filter:
    grayscale(0.06)
    sepia(0.04)
    contrast(1.08)
    saturate(1.04)
    brightness(1.0);
  box-shadow:
    0 8px 26px -10px rgba(38, 30, 18, 0.34),
    0 0 28px var(--accent-glow);
}

[data-theme="dark"] .title-avatar {
  filter:
    grayscale(0.12)
    sepia(0.10)
    contrast(1.05)
    saturate(1.04)
    brightness(1.02);
  box-shadow:
    0 8px 30px -10px rgba(0, 0, 0, 0.55),
    0 0 36px -8px var(--accent-glow);
}

[data-theme="dark"] .title-avatar:hover {
  transform: scale(1.04);
  box-shadow:
    0 12px 42px -12px rgba(0, 0, 0, 0.65),
    0 0 52px -4px var(--accent-glow);
}

.title-name {
  grid-area: name;
  display: block;
  font-size: clamp(3.6rem, 8.5vw, 6.25rem);
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 30, "wght" 380;
  min-height: 1em;
}

.title-sub {
  grid-area: sub;
  display: block;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-style: italic;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  text-align: center;
  opacity: 0;
  transform: translateY(8px);
}

.site-title.done .title-sub {
  animation: fade-up 1.2s var(--ease) 0.38s forwards;
}

.title-sub em {
  font-style: italic;
  font-variation-settings: "opsz" 96, "SOFT" 100;
}

/* Cursor — refined hairline */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 0.78em;
  margin-left: 0.06em;
  vertical-align: -0.04em;
  background: var(--accent-soft);
  border-radius: 1px;
  animation: cursor-blink 1.05s steps(1) infinite;
  box-shadow: 0 0 14px var(--accent-glow);
}

@keyframes cursor-blink {
  0%, 49%   { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* When typing finishes, fade cursor and add a soft pulse to the name */
.site-title.done .typing-cursor { animation: cursor-fade 1.2s var(--ease) forwards; }

@keyframes cursor-fade {
  0%   { opacity: 1; }
  100% { opacity: 0; transform: scaleY(0.6); }
}

/* Tagline */
.tagline {
  margin: 1.75rem auto 0;
  opacity: 0;
  animation: fade-up 1.4s var(--ease) 1.4s forwards;
}

.tagline-label {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-faded);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Content rail ---------- */

.content {
  flex: 1;
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
  display: flex;
  flex-direction: column;
}

/* ---------- Section: editorial two-column ---------- */

.section {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 3rem;
  padding: 2.6rem 0 2.6rem;
  border-top: 1px solid var(--rule);
  position: relative;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--t-slow),
    transform var(--t-slow);
}

.section:first-of-type { border-top: none; padding-top: 1rem; }
.section:last-of-type  { border-bottom: 1px solid var(--rule); padding-bottom: 3.2rem; }

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* A subtle hover-only ¶ marker, to suggest editorial revision marks */
.section::before {
  content: "¶";
  position: absolute;
  top: 2.7rem;
  right: -0.4rem;
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--accent-soft);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--t-soft), transform var(--t-soft);
  pointer-events: none;
}

.section:hover::before { opacity: 0.7; transform: translateX(0); }

/* Section marker (left rail) */
.section-marker {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
  padding-top: 0.4rem;
  position: sticky;
  top: 2rem;
  align-self: start;
}

.section-symbol {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 144, "SOFT" 100;
  color: var(--accent-soft);
  line-height: 1;
}

.section-number {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink-faded);
  font-variant-numeric: tabular-nums;
}

.section-kicker {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-top: 0.1rem;
  border-top: 1px solid var(--rule);
  width: 100%;
  padding-top: 0.55rem;
  margin-top: 0.35rem;
}

/* Section body */
.section-body { min-width: 0; }

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.4vw, 1.95rem);
  font-weight: 400;
  font-variation-settings: "opsz" 96, "SOFT" 30, "wght" 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 0.95rem;
}

.title-flourish {
  color: var(--accent-soft);
  font-style: italic;
}

.section-desc {
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--ink-muted);
  max-width: 52ch;
  margin-bottom: 1.4rem;
}

/* ---------- About prose (drop cap + inline emphasis) ---------- */

.section--prose .section-body { padding-top: 0.2rem; }

.prose {
  font-family: var(--serif);
  font-weight: 380;
  font-variation-settings: "opsz" 32, "SOFT" 30;
  font-size: 1.18rem;
  line-height: 1.7;
  letter-spacing: -0.005em;
  color: var(--ink);
  max-width: 56ch;
}

.prose em {
  font-style: italic;
  font-variation-settings: "opsz" 32, "SOFT" 100;
  color: var(--accent-soft);
  white-space: nowrap;
}

.dropcap {
  float: left;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 144, "SOFT" 100;
  font-size: 4.6rem;
  line-height: 0.85;
  padding: 0.32rem 0.55rem 0 0;
  margin-top: 0.18rem;
  color: var(--accent);
  background: linear-gradient(165deg, var(--accent) 0%, var(--accent-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Inline links inside prose ---------- */

.prose-link {
  color: var(--ink);
  text-decoration: none;
  position: relative;
  background-image: linear-gradient(var(--accent-soft), var(--accent-soft));
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  padding-bottom: 1px;
  transition: color var(--t-quick), background-size var(--t-quick);
}

.prose-link:hover { color: var(--accent-soft); }

.link-arrow {
  display: inline-block;
  font-family: var(--mono);
  margin-left: 0.15em;
  transition: transform var(--t-quick);
}

.prose-link:hover .link-arrow,
.more-link:hover .link-arrow { transform: translateX(3px); }

/* ---------- Post list (writing) ---------- */

.post-list { list-style: none; }

.post-item {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--rule);
  transition: padding-left var(--t-quick);
}

.post-item:first-child { border-top: 1px solid var(--rule-strong); }
.post-item:last-child  { border-bottom: 1px solid var(--rule); }

.post-item:hover { padding-left: 0.4rem; }

.post-date {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-faded);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.post-link {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  font-variation-settings: "opsz" 32, "SOFT" 30;
  color: var(--ink);
  text-decoration: none;
  transition: color var(--t-quick);
  letter-spacing: -0.005em;
}

.post-text {
  position: relative;
  background-image: linear-gradient(var(--accent-soft), var(--accent-soft));
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  padding-bottom: 2px;
  transition: background-size var(--t-soft);
}

.post-link:hover { color: var(--accent-soft); }
.post-link:hover .post-text { background-size: 100% 1px; }

/* ---------- Work list (projects) ---------- */

.work-list { list-style: none; }

.work-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0;
  border-top: 1px solid var(--rule);
  transition: padding-left var(--t-quick);
}

.work-item:first-child { border-top: 1px solid var(--rule-strong); }
.work-item:last-child  { border-bottom: 1px solid var(--rule); }

.work-item:hover { padding-left: 0.4rem; }

.work-link {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  font-variation-settings: "opsz" 32, "SOFT" 30;
  color: var(--ink);
  text-decoration: none;
  transition: color var(--t-quick);
  letter-spacing: -0.005em;
}

.work-link:hover { color: var(--accent-soft); }

.work-tag {
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faded);
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  white-space: nowrap;
}

/* ---------- More link ---------- */

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 1.4rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-soft);
  text-decoration: none;
  transition: color var(--t-quick);
}

.more-link:hover { color: var(--accent); }

/* ---------- Contact card ---------- */

.contact-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.contact-link {
  display: grid;
  grid-template-columns: 2rem 5rem 1fr auto;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--rule);
  margin: -0.5px;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: background var(--t-quick), border-color var(--t-quick);
}

.contact-link::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.52s var(--ease-out);
}

.contact-link:hover {
  background: var(--accent-glow);
  border-color: var(--rule-strong);
  z-index: 1;
}

.contact-link:hover::before { transform: scaleY(1); }

.contact-link--primary {
  grid-column: 1 / -1;
  grid-template-columns: 2.2rem 5rem 1fr auto;
  padding: 1.35rem 1.3rem;
  border-bottom: 1px solid var(--rule-strong);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  color: var(--ink-faded);
  transition: color var(--t-quick), transform var(--t-medium);
}

.contact-icon svg {
  width: 1.1rem;
  height: 1.1rem;
}

.contact-link--primary .contact-icon {
  width: 1.9rem;
  height: 1.9rem;
}

.contact-link--primary .contact-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.contact-link:hover .contact-icon {
  color: var(--accent);
  transform: translateY(-1px);
}

.contact-key {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-faded);
  transition: color var(--t-quick);
}

.contact-link:hover .contact-key { color: var(--ink-muted); }

.contact-value {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-style: italic;
  font-variation-settings: "opsz" 32, "SOFT" 100;
  color: var(--ink);
  letter-spacing: -0.005em;
  transition: color var(--t-quick);
}

.contact-link:hover .contact-value { color: var(--accent-soft); }

.contact-arrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-faded);
  transition: transform var(--t-quick), color var(--t-quick);
}

.contact-link:hover .contact-arrow {
  transform: translate(2px, -2px);
  color: var(--accent-soft);
}

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

.site-footer {
  padding: 2.5rem 2rem 3.25rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--rule);
  padding-top: 1.6rem;
}

.footer-mark {
  font-family: var(--serif);
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 100;
  font-size: 1.5rem;
  color: var(--ink);
  line-height: 1;
}

.footer-mark-dot { color: var(--accent-soft); }

.footer-text {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faded);
}

.footer-text em {
  font-style: italic;
  font-family: var(--serif);
  text-transform: none;
  letter-spacing: 0;
  font-variation-settings: "opsz" 32, "SOFT" 100;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* ---------- Theme toggle ---------- */

.theme-toggle {
  position: fixed;
  top: 1.4rem;
  left: 1.4rem;
  z-index: 100;
  width: 36px;
  height: 36px;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  transition:
    background var(--t-quick),
    color var(--t-quick),
    border-color var(--t-quick),
    transform var(--t-quick);
}

.theme-toggle:hover {
  color: var(--accent-soft);
  border-color: var(--accent-soft);
  transform: scale(1.04) rotate(-8deg);
}

.theme-icon { position: absolute; transition: opacity var(--t-quick), transform var(--t-quick); }
.theme-icon.sun  { opacity: 0; transform: rotate(-90deg) scale(0.6); }
.theme-icon.moon { opacity: 1; transform: rotate(0) scale(1); }

[data-theme="light"] .theme-icon.sun  { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-icon.moon { opacity: 0; transform: rotate(90deg) scale(0.6); }

/* ---------- Language toggle (independent, sits below theme toggle) ---------- */

.lang-toggle {
  position: fixed;
  top: calc(1.4rem + 36px + 0.55rem);
  left: 1.4rem;
  z-index: 100;
  width: 36px;
  height: 36px;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  transition:
    background var(--t-quick),
    color var(--t-quick),
    border-color var(--t-quick),
    transform var(--t-quick);
}

.lang-toggle:hover {
  color: var(--accent-soft);
  border-color: var(--accent-soft);
  transform: scale(1.04);
}

.lang-glyph {
  position: absolute;
  line-height: 1;
  transition: opacity var(--t-quick), transform var(--t-quick);
}

.lang-glyph.lang-en {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 144, "SOFT" 100;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.lang-glyph.lang-zh {
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", var(--serif);
  font-weight: 500;
  font-size: 0.95rem;
}

/* Default: English active → show "A". When [lang="zh"], show "文". */
.lang-glyph.lang-zh { opacity: 0; transform: scale(0.7) rotate(8deg); }
.lang-glyph.lang-en { opacity: 1; transform: scale(1) rotate(0); }

[lang="zh"] .lang-glyph.lang-en { opacity: 0; transform: scale(0.7) rotate(-8deg); }
[lang="zh"] .lang-glyph.lang-zh { opacity: 1; transform: scale(1) rotate(0); }

/* CJK refinements (scoped — never reaches the site-header) */

[lang="zh"] .dropcap {
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", var(--serif);
  font-style: normal;
  font-weight: 600;
  font-size: 3.6rem;
  line-height: 0.95;
  padding: 0.15rem 0.45rem 0 0;
  margin-top: 0.32rem;
  letter-spacing: 0;
}

[lang="zh"] .prose {
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", var(--serif);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1.85;
  letter-spacing: 0.012em;
}

[lang="zh"] .prose em {
  font-style: normal;
  font-weight: 500;
  background: linear-gradient(transparent 78%, var(--accent-glow) 78%);
  padding: 0 0.1em;
}

[lang="zh"] .section-title {
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", var(--serif);
  font-weight: 500;
  letter-spacing: 0.005em;
}

[lang="zh"] .post-link,
[lang="zh"] .work-link {
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", var(--serif);
  font-weight: 400;
  letter-spacing: 0.005em;
}

[lang="zh"] .contact-value {
  /* Email/handle values stay Latin — keep italic Fraunces */
  font-family: var(--serif);
}

[lang="zh"] .title-name {
  font-style: normal;
  font-variation-settings: normal;
  font-family: "STKaiti", "KaiTi", "AR PL UKai CN", "Noto Serif SC", "Songti SC", serif;
  letter-spacing: 0.05em;
}

/* ---------- Light theme — paper cream ---------- */

[data-theme="light"] {
  --bg:            #f3eddf;
  --bg-elev:       #efe7d4;
  --paper:         rgba(26, 23, 20, 0.025);
  --paper-hover:   rgba(26, 23, 20, 0.04);

  --ink:           #1a1714;
  --ink-muted:     #5a5446;
  --ink-faded:     #8a8270;
  --ink-whisper:   #c8bfa9;

  --accent:        #a86a2e;
  --accent-soft:   #b27838;
  --accent-deep:   #7a4a1c;
  --accent-glow:   rgba(168, 106, 46, 0.18);

  --rule:          rgba(26, 23, 20, 0.12);
  --rule-strong:   rgba(26, 23, 20, 0.22);
}

[data-theme="light"] .grain {
  opacity: 0.4;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.45  0 0 0 0 0.36  0 0 0 0 0.22  0 0 0 0.6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

[data-theme="light"] .warm-glow {
  background:
    radial-gradient(ellipse 60% 55% at 50% 50%,
      rgba(168, 106, 46, 0.13),
      rgba(168, 106, 46, 0.05) 45%,
      transparent 70%);
}

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

@media (max-width: 720px) {
  .site-header { padding: 4.25rem 1.4rem 3rem; }

  .masthead {
    gap: 0.55rem;
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    margin-bottom: 1.75rem;
  }
  .masthead-rule { width: 18px; }

  .site-title {
    grid-template-columns: auto;
    grid-template-areas:
      "avatar"
      "name"
      "sub";
    column-gap: 0;
    row-gap: 0.85rem;
    justify-items: center;
  }
  .title-avatar { width: clamp(76px, 19vw, 104px); height: clamp(76px, 19vw, 104px); }
  .title-name { font-size: clamp(3rem, 16vw, 4.4rem); }
  .tagline    { margin-top: 1.25rem; }
  .tagline-label { font-size: 0.6rem; letter-spacing: 0.22em; }

  .content { padding: 0 1.4rem 4rem; }

  /* Sections collapse to single column */
  .section {
    grid-template-columns: 1fr;
    gap: 1.1rem;
    padding: 2.1rem 0;
  }

  .section-marker {
    flex-direction: row;
    align-items: center;
    gap: 0.7rem;
    position: static;
    padding: 0;
    width: 100%;
  }

  .section-symbol { font-size: 1.2rem; }
  .section-number { font-size: 0.66rem; }

  .section-kicker {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
    width: auto;
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    margin-left: auto;
  }

  .section-title { font-size: 1.45rem; }

  .prose { font-size: 1.04rem; }
  .dropcap { font-size: 3.6rem; padding-right: 0.45rem; }

  .post-item   { grid-template-columns: 1fr; gap: 0.2rem; }
  .post-date   { font-size: 0.66rem; }

  .contact-card { grid-template-columns: 1fr; }
  .contact-link { grid-template-columns: 1.8rem 4.2rem 1fr auto; gap: 0.65rem; padding: 1rem 1.1rem; }
  .contact-link--primary { grid-column: auto; grid-template-columns: 2rem 4.2rem 1fr auto; }
  .contact-value { font-size: 0.95rem; }

  .footer-inner { flex-direction: column; gap: 0.6rem; text-align: center; }

  .section::before { display: none; }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .section { opacity: 1; transform: none; }
}