/* ==========================================================================
   Dr. Yasas Sri Wickramasinghe — Portfolio Design System
   Editorial dark theme · Fraunces + Inter + IBM Plex Mono
   ========================================================================== */

:root {
  --bg: #0b0b0d;
  --bg-elev: #121214;
  --bg-card: #141417;
  --line: rgba(242, 239, 233, 0.1);
  --line-strong: rgba(242, 239, 233, 0.22);
  --text: #f2efe9;
  --text-dim: #b5b1a8;
  --muted: #8a867d;
  --accent: #c9a45c;
  --accent-soft: rgba(201, 164, 92, 0.12);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", monospace;
  --max: 1240px;
  --pad: clamp(20px, 5vw, 72px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #0b0b0d; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

/* --- Film grain overlay ------------------------------------------------- */
body::after {
  content: "";
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 8s steps(10) infinite;
}
@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-2%, 2%); }
  40% { transform: translate(2%, -1%); }
  60% { transform: translate(-1%, -2%); }
  80% { transform: translate(1%, 1%); }
}

/* --- Scroll progress ----------------------------------------------------- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  z-index: 1001;
  transition: width 0.1s linear;
}

/* --- Navigation ----------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11, 11, 13, 0.82);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.nav-logo em { font-style: italic; color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a:not(.btn) {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); transform-origin: left; }
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px 0;
  z-index: 1002;
}
.nav-toggle span {
  display: block;
  width: 28px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.4s var(--ease), opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--pad);
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-family: var(--serif);
  font-size: clamp(32px, 8vw, 52px);
  font-weight: 400;
  color: var(--text-dim);
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 18px;
  transition: color 0.3s, padding-left 0.3s var(--ease);
}
.mobile-menu a:hover, .mobile-menu a.active { color: var(--accent); padding-left: 12px; }
.mobile-menu a .idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.14em;
}

/* --- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 14px 28px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition: color 0.4s var(--ease), border-color 0.4s;
  background: transparent;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform 0.45s var(--ease);
  z-index: -1;
  border-radius: inherit;
}
.btn:hover { color: #0b0b0d; border-color: var(--accent); }
.btn:hover::before { transform: translateY(0); }
.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-solid {
  background: var(--accent);
  border-color: var(--accent);
  color: #0b0b0d;
}
.btn-solid::before { background: var(--text); }
.btn-solid:hover { border-color: var(--text); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  transition: gap 0.3s var(--ease);
}
.link-arrow:hover { gap: 16px; }

/* --- Layout helpers --------------------------------------------------------- */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}
.section { padding: clamp(80px, 12vw, 150px) 0; border-top: 1px solid var(--line); }
.section.no-line { border-top: none; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: clamp(40px, 6vw, 72px);
  flex-wrap: wrap;
}
.section-head .idx {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.section-head h2 em { font-style: italic; color: var(--accent); font-weight: 300; }
.section-head .head-link { margin-left: auto; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--accent);
}

.lead {
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
  color: var(--text-dim);
  font-weight: 300;
}

/* --- Hero ------------------------------------------------------------------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding-top: 120px;
  padding-bottom: 60px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  top: -20%;
  right: -20%;
  background: radial-gradient(circle, rgba(201, 164, 92, 0.07) 0%, transparent 65%);
  pointer-events: none;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(44px, 7.6vw, 110px);
  font-weight: 350;
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 13ch;
}
.hero h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}
.hero-sub {
  margin-top: clamp(28px, 4vw, 44px);
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: clamp(32px, 4vw, 48px);
  align-items: center;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 40px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-meta a { transition: color 0.3s; }
.hero-meta a:hover { color: var(--accent); }
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #7cb87c;
  margin-right: 8px;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124, 184, 124, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(124, 184, 124, 0); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.hero-portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
}
.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  filter: grayscale(100%) contrast(1.05);
  transition: filter 1s var(--ease), transform 1.2s var(--ease);
  transform: scale(1.02);
}
.hero-portrait:hover img { filter: grayscale(0%); transform: scale(1.06); }
.hero-portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  pointer-events: none;
}
.hero-portrait .frame {
  position: absolute;
  bottom: -14px;
  left: -14px;
  width: 90px;
  height: 90px;
  border-left: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  opacity: 0.6;
}
.portrait-caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: rgba(11, 11, 13, 0.7);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  padding: 8px 14px;
  border-radius: 3px;
  color: var(--text-dim);
}

/* --- 3D hero (Three.js canvas + pinned scroll scene) ------------------- */
.hero-3d { overflow: hidden; }
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}
.hero-3d.no-webgl .hero-canvas { display: none; }
.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(11, 11, 13, 0.86) 0%, rgba(11, 11, 13, 0.5) 48%, rgba(11, 11, 13, 0.06) 100%),
    linear-gradient(0deg, rgba(11, 11, 13, 0.9) 0%, rgba(11, 11, 13, 0) 26%);
}
.hero-content { position: relative; z-index: 2; }
.hero-title { max-width: 15ch; }
.hero-3d .scroll-hint, .hero-3d .hero-glow { z-index: 2; }
.h-line { overflow: hidden; }
.about-portrait { max-width: 380px; margin-top: 36px; }
@media (max-width: 760px) {
  .hero-scrim {
    background:
      linear-gradient(0deg, rgba(11, 11, 13, 0.92) 8%, rgba(11, 11, 13, 0.45) 55%, rgba(11, 11, 13, 0.2) 100%);
  }
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.scroll-hint::after {
  content: "";
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--accent), transparent);
  animation: drop 2s var(--ease) infinite;
}
@keyframes drop {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* --- Marquee ------------------------------------------------------------------ */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 22px 0;
  display: flex;
  user-select: none;
}
.marquee-track {
  display: flex;
  flex-shrink: 0;
  gap: 0;
  animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--serif);
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 300;
  white-space: nowrap;
  color: var(--text-dim);
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 36px;
}
.marquee-track span::after {
  content: "✦";
  font-size: 12px;
  color: var(--accent);
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

/* --- Two-column section layout -------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: minmax(220px, 0.85fr) 2fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: start;
}
.split .sticky-col { position: sticky; top: 120px; }
.split .sticky-col h2 {
  font-family: var(--serif);
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 400;
  line-height: 1.15;
  margin-top: 18px;
}
.split .sticky-col h2 em { font-style: italic; color: var(--accent); font-weight: 300; }

/* --- Cards ------------------------------------------------------------------------ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: clamp(24px, 3vw, 36px);
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease), background 0.4s;
  position: relative;
  overflow: hidden;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}
.card:hover::before { opacity: 1; }
.card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 450;
  line-height: 1.3;
  margin-bottom: 10px;
}
.card .kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}
.card p { color: var(--text-dim); font-size: 15px; font-weight: 300; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--line);
  padding: 5px 12px;
  border-radius: 999px;
  transition: border-color 0.3s, color 0.3s;
}
.card:hover .tag { border-color: var(--line-strong); }
.tag.gold { color: var(--accent); border-color: rgba(201, 164, 92, 0.35); }

/* --- Timeline ----------------------------------------------------------------------- */
.timeline { display: flex; flex-direction: column; }
.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(28px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.4s, padding-left 0.4s var(--ease);
}
.timeline-item:first-child { border-top: 1px solid var(--line); }
.timeline-item:hover { background: rgba(242, 239, 233, 0.015); }
.timeline-date {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 8px;
  text-transform: uppercase;
}
.timeline-body h3 {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 450;
  line-height: 1.25;
}
.timeline-body .org { color: var(--accent); font-size: 14px; font-family: var(--mono); letter-spacing: 0.06em; margin-top: 4px; display: block; }
.timeline-body p { color: var(--text-dim); font-weight: 300; font-size: 15px; margin-top: 14px; max-width: 62ch; }

/* --- Publications index ----------------------------------------------------------------- */
.pub-year {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--accent);
  padding: 36px 0 12px;
  border-bottom: 1px solid var(--line-strong);
  display: block;
}
.pub-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: clamp(16px, 3vw, 40px);
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.35s var(--ease), background 0.35s;
}
.pub-row:hover { padding-left: 14px; background: rgba(242, 239, 233, 0.015); }
.pub-type {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.pub-title {
  font-family: var(--serif);
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 450;
  line-height: 1.4;
  transition: color 0.3s;
}
.pub-row:hover .pub-title { color: var(--accent); }
.pub-venue { font-size: 13.5px; color: var(--text-dim); font-style: italic; margin-top: 6px; font-weight: 300; }
.pub-venue .cite { font-style: normal; color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; }
.pub-links { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 10px; }
.pub-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.3s, border-color 0.3s;
}
.pub-links a:hover { color: var(--accent); border-color: var(--accent); }
.pub-arrow {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--muted);
  transition: transform 0.35s var(--ease), color 0.3s;
  align-self: center;
}
.pub-row:hover .pub-arrow { transform: translate(4px, -4px); color: var(--accent); }

/* --- Stats ---------------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.stat {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(28px, 4vw, 48px) clamp(20px, 3vw, 36px);
  transition: background 0.4s;
}
.stat:hover { background: rgba(201, 164, 92, 0.04); }
.stat-value {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 300;
  line-height: 1;
  color: var(--text);
}
.stat-value .suffix { color: var(--accent); }
.stat-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 14px;
  display: block;
}

/* --- Grid of cards ----------------------------------------------------------------------------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* --- Blog / article cards ------------------------------------------------------------------------ */
.article-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color 0.4s, transform 0.4s var(--ease);
}
.article-card:hover { border-color: var(--line-strong); transform: translateY(-4px); }
.article-cover {
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 16px;
}
.article-cover::after {
  content: attr(data-num);
  position: absolute;
  top: 10px;
  right: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(242, 239, 233, 0.4);
}
.article-cover .cat {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
  background: rgba(11, 11, 13, 0.55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 999px;
}
.article-body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.article-body .src {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.article-body h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 450;
  line-height: 1.35;
  transition: color 0.3s;
}
.article-card:hover .article-body h3 { color: var(--accent); }
.article-body .read {
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s, gap 0.3s var(--ease);
}
.article-card:hover .read { color: var(--accent); gap: 14px; }

/* Cover gradients */
.cov-violet { background: linear-gradient(135deg, #15082b 0%, #341259 55%, #5b2a9a 100%); }
.cov-forest { background: linear-gradient(135deg, #041f10 0%, #0e3d22 55%, #1c6e3c 100%); }
.cov-teal   { background: linear-gradient(135deg, #02201e 0%, #074440 55%, #0f766e 100%); }
.cov-ember  { background: linear-gradient(135deg, #270803 0%, #581c0c 55%, #9a3412 100%); }
.cov-navy   { background: linear-gradient(135deg, #050d22 0%, #122a56 55%, #1d4ed8 100%); }
.cov-plum   { background: linear-gradient(135deg, #230418 0%, #4b1038 55%, #86195e 100%); }
.cov-slate  { background: linear-gradient(135deg, #0c1016 0%, #1f2937 55%, #475569 100%); }
.cov-gold   { background: linear-gradient(135deg, #211503 0%, #4d3404 55%, #92660a 100%); }
.article-cover .deco {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  transition: transform 0.8s var(--ease);
}
.article-card:hover .article-cover .deco { transform: scale(1.08) rotate(1deg); }

/* --- Feature rows (research bento) ---------------------------------------------------------------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  padding: clamp(36px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--line);
}
.feature-row:first-of-type { border-top: 1px solid var(--line); }
.feature-media {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-elev);
}
.feature-media img { width: 100%; transition: transform 0.9s var(--ease); }
.feature-row:hover .feature-media img { transform: scale(1.04); }

/* --- Contact form ------------------------------------------------------------------------------------ */
.form-grid { display: flex; flex-direction: column; gap: 36px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.field { display: flex; flex-direction: column; gap: 10px; }
.field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.3s;
}
.field:focus-within label { color: var(--accent); }
.field input, .field textarea, .field select {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 10px 0;
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 300;
  color: var(--text);
  border-radius: 0;
  transition: border-color 0.3s;
}
.field select { appearance: none; cursor: pointer; }
.field select option { background: var(--bg-elev); color: var(--text); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted); }
.field textarea { resize: vertical; min-height: 140px; }

.info-list { display: flex; flex-direction: column; }
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.info-row .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  flex-shrink: 0;
}
.info-row .v { font-size: 15px; font-weight: 300; text-align: right; }
.info-row a.v:hover { color: var(--accent); }

/* --- Quote banner -------------------------------------------------------------------------------------- */
.quote-banner {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
}
.quote-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(0.5);
}
.quote-banner .inner {
  position: relative;
  padding: clamp(28px, 5vw, 56px);
}
.quote-banner blockquote {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.35;
  max-width: 22ch;
}
.quote-banner cite {
  display: block;
  margin-top: 18px;
  font-family: var(--mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

/* --- CTA + Footer ---------------------------------------------------------------------------------------- */
.cta {
  padding: clamp(90px, 14vw, 180px) 0;
  border-top: 1px solid var(--line);
  text-align: left;
}
.cta .eyebrow { margin-bottom: 28px; }
.cta h2 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 14ch;
}
.cta h2 em { font-style: italic; color: var(--accent); }
.cta .cta-actions { margin-top: clamp(32px, 5vw, 56px); display: flex; gap: 18px; flex-wrap: wrap; }

footer {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-name { font-family: var(--serif); font-size: 19px; }
.footer-name em { font-style: italic; color: var(--accent); }
.footer-copy { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); margin-top: 6px; }
.footer-links { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--accent); }

/* --- Page hero (inner pages) -------------------------------------------------------------------------------- */
.page-hero {
  padding-top: clamp(150px, 20vh, 220px);
  padding-bottom: clamp(50px, 8vw, 90px);
}
.page-hero h1 {
  font-family: var(--serif);
  font-weight: 350;
  font-size: clamp(42px, 7vw, 92px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-top: 26px;
  max-width: 16ch;
}
.page-hero h1 em { font-style: italic; font-weight: 300; color: var(--accent); }
.page-hero .lead { margin-top: 28px; max-width: 640px; }
.page-hero .hero-actions { margin-top: 36px; }

/* --- Reveal animations ----------------------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* --- Responsive --------------------------------------------------------------------------------------------------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-portrait { max-width: 420px; }
  .split { grid-template-columns: 1fr; }
  .split .sticky-col { position: static; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; }
  .pub-row { grid-template-columns: 1fr; gap: 8px; }
  .pub-arrow { display: none; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-logo { font-size: 16px; white-space: nowrap; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .scroll-hint { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}