/* ==========================================================================
   bache — personal homepage
   A warm, editorial layout built around five quiet sections.
   ========================================================================== */

:root {
  color-scheme: light;
  --bg: #f2eee5;
  --bg-deep: #e9e2d5;
  --surface: #faf6ed;
  --surface-strong: #fffaf1;
  --ink: #1b1916;
  --ink-soft: #37332c;
  --muted: #716a5e;
  --faint: #9b9283;
  --line: rgba(27, 25, 22, 0.14);
  --line-strong: rgba(27, 25, 22, 0.3);
  --accent: #9d3928;
  --accent-bright: #b64834;
  --accent-soft: rgba(157, 57, 40, 0.09);
  --accent-contrast: #fff8ef;
  --olive: #5d6450;
  --shadow: 0 34px 70px -46px rgba(39, 31, 18, 0.5);
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC",
    "SimSun", Georgia, serif;
  --font-sans: "Avenir Next", "Helvetica Neue", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Consolas,
    monospace;
  --page: min(1240px, calc(100vw - 112px));
  --header-height: 92px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #12110f;
  --bg-deep: #0b0a09;
  --surface: #1a1815;
  --surface-strong: #201d19;
  --ink: #f0e9dc;
  --ink-soft: #d8d0c2;
  --muted: #a69c8c;
  --faint: #7c7467;
  --line: rgba(240, 233, 220, 0.14);
  --line-strong: rgba(240, 233, 220, 0.28);
  --accent: #df8873;
  --accent-bright: #eba18e;
  --accent-soft: rgba(223, 136, 115, 0.1);
  --accent-contrast: #1a1210;
  --olive: #a8ad91;
  --shadow: 0 36px 80px -48px rgba(0, 0, 0, 0.9);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 300px;
  background:
    radial-gradient(
      1100px 700px at 82% -10%,
      var(--accent-soft),
      transparent 62%
    ),
    radial-gradient(
      900px 600px at -10% 30%,
      rgba(93, 100, 80, 0.07),
      transparent 60%
    ),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.45s var(--ease), color 0.45s var(--ease);
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
}

img,
svg {
  display: block;
}

h1,
h2,
h3,
p,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  transform: translateY(-180%);
  padding: 10px 18px;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.24;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 3px,
      rgba(49, 43, 32, 0.025) 3px,
      rgba(49, 43, 32, 0.025) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 5px,
      rgba(49, 43, 32, 0.018) 5px,
      rgba(49, 43, 32, 0.018) 6px
    );
  mix-blend-mode: multiply;
}

:root[data-theme="dark"] .page-grain {
  opacity: 0.12;
  mix-blend-mode: screen;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 40px;
  height: var(--header-height);
  padding-inline: max(56px, calc((100vw - 1240px) / 2));
  border-bottom: 1px solid transparent;
  transition:
    height 0.35s var(--ease),
    background-color 0.35s ease,
    border-color 0.35s ease,
    backdrop-filter 0.35s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  height: 72px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom-color: var(--line);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.brand {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

.brand:hover .brand-mark {
  background: var(--ink);
  color: var(--bg);
}

.brand-name {
  max-width: 18ch;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-family: var(--font-serif);
  font-size: 1.02rem;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
  margin-left: auto;
}

.site-nav a {
  position: relative;
  padding: 6px 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  transition:
    border-color 0.25s ease,
    background-color 0.25s ease,
    color 0.25s ease;
}

.icon-button:hover {
  border-color: var(--line-strong);
  background: var(--surface);
}

.icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-moon {
  display: none;
}

:root[data-theme="dark"] .icon-sun {
  display: none;
}

:root[data-theme="dark"] .icon-moon {
  display: block;
}

.menu-toggle {
  position: relative;
  display: none;
}

.menu-toggle span {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 17px;
  height: 1px;
  margin: 0;
  background: currentColor;
  transition: transform 0.3s var(--ease);
}

.menu-toggle span:first-child {
  transform: translate(-50%, -4px);
}

.menu-toggle span:last-child {
  transform: translate(-50%, 3px);
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

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

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(280px, 0.72fr);
  gap: clamp(48px, 7vw, 110px);
  align-items: center;
  width: var(--page);
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(var(--header-height) + 70px) 0 90px;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(30px, 5vh, 58px);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.eyebrow-rule {
  width: 58px;
  height: 1px;
  background: var(--line-strong);
}

.hero-name {
  max-width: 100%;
  font-family: var(--font-serif);
  font-size: clamp(4.2rem, 9.8vw, 9.4rem);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: -0.035em;
  overflow-wrap: anywhere;
}

.hero-latin {
  margin-top: 18px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: clamp(0.66rem, 1vw, 0.78rem);
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.hero-intro {
  display: grid;
  grid-template-columns: minmax(140px, 0.55fr) minmax(0, 1fr);
  gap: 28px;
  margin-top: clamp(34px, 5vh, 54px);
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.hero-role {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.hero-tagline {
  max-width: 40ch;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(1.14rem, 1.7vw, 1.42rem);
  line-height: 1.75;
}

.hero-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(180px, 0.65fr);
  gap: 34px;
  align-items: end;
  margin-top: clamp(38px, 6vh, 62px);
}

.hero-bio {
  max-width: 46ch;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.9;
  white-space: pre-line;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: flex-end;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  transition:
    border-color 0.25s ease,
    color 0.25s ease,
    background-color 0.25s ease;
}

.hero-link:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--bg);
}

.hero-link svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.hero-aside {
  align-self: center;
}

.portrait-shell {
  position: relative;
  width: min(100%, 390px);
  margin-left: auto;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 28% 22%,
      rgba(255, 245, 225, 0.23),
      transparent 32%
    ),
    linear-gradient(150deg, #b04b36 0%, #8d3325 44%, #5e2119 100%);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.portrait-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 4;
  border: 1px solid rgba(255, 248, 235, 0.34);
  box-shadow: inset 0 0 80px rgba(44, 14, 9, 0.26);
  pointer-events: none;
}

.portrait-image {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.02);
}

.portrait-monogram {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  transform: translate(-50%, -52%);
  color: rgba(255, 247, 233, 0.92);
  font-family: var(--font-serif);
  font-size: clamp(9rem, 19vw, 15rem);
  line-height: 1;
  letter-spacing: -0.1em;
  text-indent: -0.1em;
  text-shadow: 0 10px 50px rgba(54, 15, 10, 0.3);
}

.portrait-orbit {
  position: absolute;
  top: 12%;
  left: 14%;
  z-index: 1;
  width: 72%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 247, 233, 0.25);
  border-radius: 50%;
}

.portrait-orbit::before,
.portrait-orbit::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 1px solid rgba(255, 247, 233, 0.12);
  border-radius: 50%;
}

.portrait-orbit::after {
  inset: 34%;
  background: rgba(255, 247, 233, 0.04);
}

.portrait-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.55;
  background-image: repeating-linear-gradient(
    -38deg,
    transparent 0,
    transparent 19px,
    rgba(255, 247, 233, 0.055) 19px,
    rgba(255, 247, 233, 0.055) 20px
  );
}

.portrait-vertical {
  position: absolute;
  top: 4px;
  left: -34px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.24em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.portrait-corner {
  position: absolute;
  z-index: 6;
  width: 38px;
  height: 38px;
  pointer-events: none;
}

.portrait-corner-tl {
  top: -10px;
  left: -10px;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.portrait-corner-br {
  right: -10px;
  bottom: -10px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.portrait-meta {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.scroll-cue {
  position: absolute;
  left: 0;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.24em;
}

.scroll-line {
  display: block;
  width: 42px;
  height: 1px;
  background: var(--line-strong);
  animation: scroll-line 2.8s var(--ease) infinite;
  transform-origin: left;
}

@keyframes scroll-line {
  0%,
  100% {
    transform: scaleX(0.35);
    opacity: 0.4;
  }
  50% {
    transform: scaleX(1);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(80px, 10vw, 128px) 0;
  border-top: 1px solid var(--line);
}

.section-last {
  padding-bottom: clamp(100px, 12vw, 150px);
}

.section-head {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) minmax(200px, 0.62fr);
  gap: 28px;
  align-items: start;
}

.section-number {
  padding-top: 9px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
}

.section-title-wrap {
  min-width: 0;
}

.section-kicker {
  margin-bottom: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.61rem;
  letter-spacing: 0.2em;
}

.section-title-wrap h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.2vw, 3.6rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.section-note {
  justify-self: end;
  max-width: 28rem;
  padding-top: 8px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
  text-align: right;
  text-wrap: pretty;
}

.section-content {
  margin-top: clamp(42px, 6vw, 70px);
  padding-left: 102px;
}

.empty-state {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(20px, 4vw, 46px);
  align-items: center;
  min-height: 160px;
  padding: 32px clamp(24px, 4vw, 50px);
  border: 1px dashed var(--line-strong);
  background:
    linear-gradient(
      120deg,
      color-mix(in srgb, var(--surface) 66%, transparent),
      transparent
    );
}

.empty-glyph {
  color: var(--line-strong);
  font-family: var(--font-serif);
  font-size: clamp(3.8rem, 8vw, 6.4rem);
  line-height: 1;
}

.empty-copy p {
  max-width: 35ch;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 1.12rem;
}

.empty-copy span {
  display: block;
  margin-top: 8px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Education */

.timeline {
  border-top: 1px solid var(--line);
}

.timeline-entry {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: clamp(30px, 5vw, 72px);
  padding: clamp(30px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--line);
}

.entry-period {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  line-height: 1.7;
}

.entry-period span {
  display: block;
}

.entry-period .period-separator {
  color: var(--faint);
}

.entry-main {
  min-width: 0;
}

.entry-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 18px;
}

.entry-title-row h3,
.award-title,
.intern-company,
.paper-title,
.project-title {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.entry-title-row h3 {
  font-size: clamp(1.5rem, 2.4vw, 1.95rem);
  line-height: 1.35;
}

.entry-degree,
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.entry-major {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
}

.entry-description {
  max-width: 68ch;
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.95;
  white-space: pre-line;
}

.points {
  display: grid;
  gap: 7px;
  margin-top: 16px;
}

.points li {
  position: relative;
  max-width: 72ch;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

.points li::before {
  content: "";
  position: absolute;
  top: 0.82em;
  left: 0;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  border-bottom: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.61rem;
  letter-spacing: 0.09em;
  line-height: 2;
  text-transform: uppercase;
  transition:
    color 0.25s ease,
    border-color 0.25s ease;
}

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

.text-link svg,
.inline-icon {
  width: 11px;
  height: 11px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Awards */

.awards-list {
  border-top: 1px solid var(--line);
}

.award-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) auto;
  gap: clamp(22px, 4vw, 52px);
  align-items: start;
  padding: 28px 10px;
  border-bottom: 1px solid var(--line);
  transition:
    background-color 0.3s ease,
    padding-left 0.3s var(--ease);
}

.award-row:hover {
  padding-left: 20px;
  background: linear-gradient(
    90deg,
    var(--accent-soft),
    transparent 70%
  );
}

.award-date {
  padding-top: 3px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.08em;
}

.award-main {
  min-width: 0;
}

.award-title {
  font-size: clamp(1.15rem, 1.7vw, 1.35rem);
  line-height: 1.5;
}

.award-issuer {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.79rem;
  letter-spacing: 0.03em;
}

.award-description {
  max-width: 66ch;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.85;
  white-space: pre-line;
}

.award-level {
  margin-top: 3px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  color: var(--olive);
  font-family: var(--font-mono);
  font-size: 0.53rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* Internships */

.internship-list {
  display: grid;
  gap: 18px;
}

.intern-card {
  position: relative;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  transition:
    transform 0.4s var(--ease),
    border-color 0.3s ease,
    box-shadow 0.4s var(--ease);
}

.intern-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.intern-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 26px;
}

.intern-company {
  font-size: clamp(1.35rem, 2.1vw, 1.72rem);
  line-height: 1.4;
}

.intern-role {
  margin-top: 4px;
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.intern-period {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.intern-location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 10px;
  color: var(--faint);
}

.intern-description {
  max-width: 78ch;
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.9;
  white-space: pre-line;
}

/* Publications */

.publications-list {
  border-top: 1px solid var(--line);
}

.paper {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: clamp(18px, 3vw, 38px);
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.paper-index {
  padding-top: 5px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.paper-title {
  max-width: 42ch;
  font-size: clamp(1.24rem, 1.9vw, 1.55rem);
  line-height: 1.5;
}

.paper-title a {
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition:
    background-size 0.35s var(--ease),
    color 0.25s ease;
}

.paper-title a:hover {
  color: var(--accent);
  background-size: 100% 1px;
}

.paper-authors {
  max-width: 74ch;
  margin-top: 9px;
  color: var(--muted);
  font-size: 0.81rem;
  line-height: 1.8;
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 13px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.05em;
}

.paper-venue {
  color: var(--olive);
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  transition:
    color 0.25s ease,
    border-color 0.25s ease,
    background-color 0.25s ease;
}

.paper-link:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--bg);
}

.paper-description {
  max-width: 74ch;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.85;
  white-space: pre-line;
}

/* Projects */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 310px;
  padding: clamp(26px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--ink);
  background: color-mix(in srgb, var(--surface) 68%, transparent);
  overflow: hidden;
  transition:
    transform 0.4s var(--ease),
    border-color 0.3s ease,
    box-shadow 0.4s var(--ease);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  border-top-color: var(--accent);
  box-shadow: var(--shadow);
}

.project-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  transition: color 0.25s ease;
}

.project-links a:hover {
  color: var(--accent);
}

.project-title {
  max-width: 20ch;
  margin-top: 30px;
  font-size: clamp(1.45rem, 2.3vw, 1.85rem);
  line-height: 1.4;
}

.project-role {
  margin-top: 8px;
  color: var(--accent);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
}

.project-description {
  max-width: 52ch;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.9;
  white-space: pre-line;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 28px;
}

.tech-tag {
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.53rem;
  letter-spacing: 0.06em;
}

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

.site-footer {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(60px, 8vw, 100px) 0 34px;
  border-top: 1px solid var(--line-strong);
}

.footer-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 0.45fr);
  gap: 28px;
  align-items: end;
}

.footer-big {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6.6rem);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.04em;
  overflow-wrap: anywhere;
}

.footer-note {
  max-width: 28ch;
  justify-self: end;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.85;
  text-align: right;
}

.footer-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-top: 42px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.57rem;
  letter-spacing: 0.08em;
}

.footer-email a {
  border-bottom: 1px solid var(--line-strong);
  transition: color 0.25s ease;
}

.footer-email a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 54px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
}

.footer-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.admin-link {
  position: relative;
  padding-left: 16px;
  color: var(--faint);
  transition: color 0.25s ease;
}

.admin-link::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 5px;
  height: 5px;
  border: 1px solid currentColor;
  border-radius: 50%;
  transform: translateY(-50%);
}

.admin-link:hover {
  color: var(--ink);
}

.link-arrow {
  display: inline-block;
  margin-left: 4px;
  opacity: 0.65;
  font-size: 0.86em;
  transition:
    transform 0.25s var(--ease),
    opacity 0.25s ease;
}

a:hover > .link-arrow {
  transform: translate(2px, -1px);
  opacity: 1;
}

.has-image .portrait-monogram,
.has-image .portrait-orbit,
.has-image .portrait-lines {
  opacity: 0;
  transition: opacity 0.4s ease;
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */

.error-page {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: var(--page);
  min-height: 100svh;
  margin: 0 auto;
  padding: 80px 0;
}

.error-kicker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
}

.error-code {
  margin-top: 10px;
  color: var(--line-strong);
  font-family: var(--font-serif);
  font-size: clamp(7rem, 22vw, 16rem);
  font-weight: 500;
  line-height: 0.78;
  letter-spacing: -0.06em;
}

.error-page h1 {
  max-width: 18ch;
  margin-top: 38px;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.error-copy {
  max-width: 42ch;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.9;
}

.error-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
  margin-top: 30px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  transition: color 0.25s ease;
}

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

/* --------------------------------------------------------------------------
   Reveal motion
   -------------------------------------------------------------------------- */

.has-js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease);
}

.has-js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.has-js .reveal-delay-1 {
  transition-delay: 0.08s;
}

.has-js .reveal-delay-2 {
  transition-delay: 0.16s;
}

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

@media (max-width: 1100px) {
  :root {
    --page: min(100% - 72px, 1000px);
  }

  .hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(250px, 0.62fr);
    gap: 48px;
  }

  .hero-bottom {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .hero-links {
    justify-content: flex-start;
  }

  .section-content {
    padding-left: 0;
  }

  .section-head {
    grid-template-columns: 54px minmax(0, 1fr) minmax(180px, 0.55fr);
  }
}

@media (max-width: 880px) {
  :root {
    --header-height: 78px;
    --page: calc(100vw - 48px);
  }

  .site-header {
    gap: 18px;
    padding-inline: 24px;
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: -1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    min-height: 100svh;
    padding: calc(var(--header-height) + 46px) 24px 40px;
    background: var(--bg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transition:
      opacity 0.35s var(--ease),
      transform 0.35s var(--ease),
      visibility 0.35s;
  }

  .site-header.is-open .site-nav {
    z-index: 1;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav a {
    width: 100%;
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-serif);
    font-size: 1.55rem;
    letter-spacing: 0.02em;
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a::before {
    content: "0" counter(navitem);
    counter-increment: navitem;
    display: inline-block;
    width: 42px;
    color: var(--faint);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    vertical-align: middle;
  }

  .site-nav {
    counter-reset: navitem;
  }

  .menu-toggle {
    display: grid;
  }

  .header-actions {
    margin-left: auto;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--header-height) + 86px);
    padding-bottom: 100px;
  }

  .hero-name {
    font-size: clamp(4rem, 16vw, 7.6rem);
  }

  .hero-aside {
    width: min(100%, 330px);
    order: -1;
    margin-left: auto;
    margin-bottom: -8px;
  }

  .hero-copy {
    display: flex;
    flex-direction: column;
  }

  .eyebrow {
    margin-bottom: 28px;
  }

  .hero-aside {
    display: none;
  }

  .hero-intro {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .hero-bottom {
    margin-top: 34px;
  }

  .scroll-cue {
    display: none;
  }

  .section {
    padding: 82px 0;
  }

  .section-head {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 18px;
  }

  .section-note {
    grid-column: 2;
    justify-self: start;
    padding-top: 16px;
    text-align: left;
  }

  .timeline-entry {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .entry-period {
    display: flex;
    gap: 6px;
  }

  .entry-period span {
    display: inline;
  }

  .award-row {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 18px;
    padding-inline: 0;
  }

  .award-row:hover {
    padding-left: 0;
    background: transparent;
  }

  .award-level {
    grid-column: 2;
    justify-self: start;
    margin-top: -4px;
  }

  .paper {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .footer-lead {
    grid-template-columns: 1fr;
  }

  .footer-note {
    justify-self: start;
    text-align: left;
  }
}

@media (max-width: 560px) {
  :root {
    --page: calc(100vw - 36px);
  }

  .site-header {
    padding-inline: 18px;
  }

  .brand-name {
    max-width: 11ch;
  }

  .hero {
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 74px;
  }

  .eyebrow {
    gap: 9px;
    font-size: 0.55rem;
    letter-spacing: 0.12em;
  }

  .eyebrow-rule {
    width: 24px;
  }

  .hero-name {
    font-size: clamp(3.8rem, 19vw, 6.2rem);
  }

  .hero-latin {
    margin-top: 12px;
    font-size: 0.58rem;
    letter-spacing: 0.24em;
  }

  .hero-intro {
    margin-top: 30px;
    padding-top: 20px;
  }

  .hero-tagline {
    font-size: 1.08rem;
  }

  .hero-bio {
    font-size: 0.86rem;
  }

  .section {
    padding: 66px 0;
  }

  .section-head {
    grid-template-columns: 1fr;
  }

  .section-number {
    padding-top: 0;
  }

  .section-note {
    grid-column: 1;
    padding-top: 4px;
  }

  .section-title-wrap h2 {
    font-size: 2.25rem;
  }

  .section-content {
    margin-top: 34px;
  }

  .empty-state {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 26px 22px;
    min-height: 0;
  }

  .empty-glyph {
    font-size: 3rem;
  }

  .entry-title-row {
    gap: 8px 12px;
  }

  .award-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 24px 0;
  }

  .award-level {
    grid-column: 1;
    justify-self: start;
  }

  .award-date {
    padding-top: 0;
  }

  .intern-card {
    padding: 24px 20px;
  }

  .paper {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .paper-index {
    padding-top: 0;
  }

  .project-card {
    min-height: 0;
    padding: 26px 22px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .footer-bottom {
    flex-wrap: wrap;
    gap: 10px;
  }

  .footer-rule {
    display: none;
  }

  .admin-link {
    margin-left: auto;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .has-js .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .hero-aside,
  .scroll-cue,
  .admin-link,
  .page-grain,
  .hero-links {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .hero {
    min-height: 0;
    display: block;
    padding: 20px 0;
  }

  .section {
    break-inside: avoid;
    padding: 28px 0;
  }

  .has-js .reveal {
    opacity: 1;
    transform: none;
  }
}