/* ═════════════════════════════════════════════════════════
   ALTN VISION — Research Station v2.0
   Space is Interface.
   ═════════════════════════════════════════════════════════ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@200;300;400;500;600&family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;1,300&display=swap');

/* ── CSS Variables ── */
:root {
  --bg: #06080c;
  --surface: #0b0f16;
  --text: #c2cfe0;
  --muted: #445060;
  --accent: #22f0a0;
  --border: rgba(194, 207, 224, 0.06);
  --ring: rgba(194, 207, 224, 0.08);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  cursor: none;
}

@media (max-width: 768px) {
  body { cursor: auto; }
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::selection {
  background: var(--accent);
  color: #06080c;
}

/* ── Custom Cursor ── */
.cursor-dot {
  position: fixed;
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: transform 0.08s, background 0.3s;
}
.cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1px solid var(--ring);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, border-color 0.3s, background 0.3s;
}
.cursor-ring.hover {
  width: 56px;
  height: 56px;
  border-color: rgba(34, 240, 160, 0.15);
  background: rgba(34, 240, 160, 0.03);
}
.cursor-ring.click {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Selection ── */
::selection {
  background: var(--accent);
  color: var(--bg);
}

/* ── Boot Loader ── */
.boot-loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.boot-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.boot-loader .boot-line {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.02em;
  opacity: 0;
  animation: boot-fade 0.5s ease forwards;
}
.boot-loader .boot-line:nth-child(1) { animation-delay: 0.1s; }
.boot-loader .boot-line:nth-child(2) { animation-delay: 0.6s; }
.boot-loader .boot-line:nth-child(3) { animation-delay: 1.1s; color: var(--accent); }
.boot-cursor {
  display: inline-block;
  width: 7px;
  height: 13px;
  background: var(--accent);
  opacity: 0;
  animation: boot-fade 0.3s ease 1.6s forwards, blink 0.7s ease 1.9s infinite;
  vertical-align: middle;
  margin-left: 3px;
}

@keyframes boot-fade { to { opacity: 1; } }
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(6, 8, 12, 0.75);
  backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

nav .logo {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
nav .logo .logo-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

nav .nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

nav .nav-links a {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.3s ease;
  position: relative;
  padding: 4px 0;
}
nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.35s ease;
}
nav .nav-links a:hover { color: var(--text); }
nav .nav-links a:hover::after { width: 100%; }
nav .nav-links a.active {
  color: var(--accent);
}
nav .nav-links a.active::after {
  width: 100%;
  height: 1.5px;
}

/* ── Grid Background ── */
.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(194, 207, 224, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(194, 207, 224, 0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 15%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 15%, transparent 65%);
}

/* ── Glow ── */
.glow {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
}
.glow-1 {
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: rgba(34, 240, 160, 0.03);
}
.glow-2 {
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: rgba(34, 240, 160, 0.02);
}

/* ── Sector (Generic Section) ── */
.sector {
  position: relative;
  z-index: 1;
  padding: 120px 48px 100px;
  max-width: 1280px;
  margin: 0 auto;
}

.sector-header {
  margin-bottom: 56px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}
.sector-header .sh-left .sh-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sector-header .sh-left .sh-label .sh-bracket {
  color: var(--accent);
  opacity: 0.6;
}
.sector-header .sh-left h2 {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.15;
}
.sector-header .sh-left .sh-desc {
  font-size: 13px;
  color: var(--muted);
  max-width: 420px;
  margin-top: 6px;
  line-height: 1.7;
}

/* ── Divider Line ── */
.divider-line {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Container width helper ── */
.wide { max-width: 1400px; }

/* ── Hero ── */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 48px 80px;
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.hero-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.hero-status .status-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 1.5s ease infinite;
}
.hero-status .status-label {
  color: var(--accent);
  text-transform: uppercase;
}

.hero-clock {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  max-width: 960px;
  margin-bottom: 12px;
  position: relative;
}
.hero-title .accent-text {
  color: var(--accent);
}
.hero-title .cursor-blink {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

.hero-sub {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
  max-width: 540px;
  line-height: 1.8;
  margin-bottom: 48px;
  position: relative;
}

/* ── Practice (Track A/B) ── */
.track-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}

.track-card {
  background: var(--surface);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: background 0.4s ease;
}
.track-card:hover {
  background: #0e131e;
}

.track-card .track-visual {
  width: 100%;
  height: 120px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.track-card .track-visual .tv-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.08;
}
.track-card:first-child .track-visual {
  background: linear-gradient(135deg, rgba(34,240,160,0.08) 0%, rgba(6,8,12,1) 70%);
}
.track-card:first-child .tv-pattern {
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 32px, rgba(34,240,160,0.15) 32px, rgba(34,240,160,0.15) 33px),
    repeating-linear-gradient(90deg, transparent, transparent 32px, rgba(34,240,160,0.15) 32px, rgba(34,240,160,0.15) 33px);
}
.track-card:last-child .track-visual {
  background: linear-gradient(135deg, rgba(34,240,160,0.04) 0%, rgba(6,8,12,1) 70%);
}
.track-card:last-child .tv-pattern {
  background-image:
    radial-gradient(circle at 12px 12px, rgba(34,240,160,0.1) 1px, transparent 1px);
  background-size: 24px 24px;
}

.track-card .track-tag {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.6;
  margin-bottom: 12px;
}
.track-card:last-child .track-tag {
  color: var(--muted);
}

.track-card h3 {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.track-card .track-sub {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.track-card p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 400px;
}

.track-card .track-status {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.track-card .track-status .ts-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
}
.track-card:first-child .track-status { color: var(--accent); }
.track-card:first-child .ts-dot { background: var(--accent); }
.track-card:last-child .track-status { color: var(--muted); }
.track-card:last-child .ts-dot { background: var(--muted); }

/* Track connector */
.track-connector {
  grid-column: 1 / -1;
  padding: 24px 40px;
  background: rgba(34, 240, 160, 0.02);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.track-connector .tc-arrow {
  color: var(--accent);
  opacity: 0.5;
  font-size: 14px;
}
.track-connector .tc-highlight {
  color: var(--text);
}

/* ── Works / Project Grid ── */
.filter-bar {
  display: flex;
  gap: 2px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-bar .filter-btn {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px 18px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 2px;
}
.filter-bar .filter-btn:hover {
  color: var(--text);
  border-color: rgba(34, 240, 160, 0.2);
}
.filter-bar .filter-btn.active {
  color: var(--accent);
  border-color: rgba(34, 240, 160, 0.3);
  background: rgba(34, 240, 160, 0.04);
}

.project-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr 0.6fr;
  gap: 2px;
}

.project-card {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--surface);
  overflow: hidden;
  cursor: pointer;
  transition: background 0.4s ease;
}
.project-card.featured {
  grid-row: span 2;
  aspect-ratio: auto;
}
.project-card.hidden {
  display: none;
}

.project-card .pc-visual {
  position: absolute;
  inset: 0;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.project-card:hover .pc-visual {
  transform: scale(1.04);
}
.project-card .pc-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
}

.project-card .pc-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6,8,12,0.92) 0%, rgba(6,8,12,0.1) 55%, transparent 100%);
  z-index: 1;
}

.project-card .pc-info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 48px 24px 24px;
  z-index: 2;
}
.project-card .pc-info .pc-tag {
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.12em;
  color: var(--accent);
  opacity: 0.7;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.project-card .pc-info h3 {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}
.project-card .pc-info .pc-meta {
  font-size: 10px;
  color: var(--muted);
}

/* Project card gradient variations */
.pc-visual-1 { background: url('../images/projects/page-06-hero.jpg') center/cover no-repeat; }
.pc-visual-2 { background: url('../images/projects/page-08-hero.jpg') center/cover no-repeat; }
.pc-visual-3 { background: url('../images/projects/page-10-hero.jpg') center/cover no-repeat; }
.pc-visual-4 { background: url('../images/projects/page-14-hero.jpg') center/cover no-repeat; }
.pc-visual-5 { background: url('../images/projects/page-18-hero.jpg') center/cover no-repeat; }
.pc-visual-6 { background: url('../images/projects/page-22-hero.jpg') center/cover no-repeat; }

.pc-pattern-1 {
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(34,240,160,0.08) 40px, rgba(34,240,160,0.08) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(34,240,160,0.08) 40px, rgba(34,240,160,0.08) 41px);
}
.pc-pattern-2 {
  background-image:
    radial-gradient(circle at 20px 20px, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.pc-pattern-3 {
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(34,240,160,0.05) 20px, rgba(34,240,160,0.05) 21px);
}
.pc-pattern-4 {
  background-image:
    repeating-linear-gradient(-30deg, transparent, transparent 15px, rgba(255,255,255,0.04) 15px, rgba(255,255,255,0.04) 16px),
    repeating-linear-gradient(60deg, transparent, transparent 30px, rgba(34,240,160,0.04) 30px, rgba(34,240,160,0.04) 31px);
}
.pc-pattern-5 {
  background-image: radial-gradient(circle at 50% 50%, rgba(34,240,160,0.08) 0%, transparent 50%);
}
.pc-pattern-6 {
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 25px, rgba(255,255,255,0.04) 25px, rgba(255,255,255,0.04) 26px),
    repeating-linear-gradient(90deg, transparent, transparent 25px, rgba(255,255,255,0.04) 25px, rgba(255,255,255,0.04) 26px);
  background-size: 50px 50px, 50px 50px;
}

/* ── Field Notes / Photo Strip ── */
.field-intro {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.9;
  max-width: 640px;
  margin-bottom: 48px;
}

.photo-strip {
  display: flex;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
  cursor: grab;
  padding-bottom: 4px;
}
.photo-strip::-webkit-scrollbar { display: none; }

.ph-frame {
  flex: 0 0 auto;
  width: 240px;
  aspect-ratio: 3 / 4;
  background: var(--surface);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: opacity 0.3s ease;
}
.ph-frame:hover { opacity: 0.85; }
.ph-frame.wide { width: 360px; aspect-ratio: 4 / 3; }
.ph-frame.tall { width: 180px; aspect-ratio: 9 / 16; }

.ph-frame .ph-visual {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.ph-frame:hover .ph-visual { transform: scale(1.06); }

.ph-frame .ph-info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px 16px 16px;
  background: linear-gradient(to top, rgba(6,8,12,0.88) 0%, transparent 100%);
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.4s ease;
  z-index: 2;
}
.ph-frame:hover .ph-info {
  opacity: 1;
  transform: translateY(0);
}
.ph-frame .ph-info .ph-loc {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.ph-frame .ph-info .ph-coord {
  font-family: var(--font-mono);
  font-size: 7px;
  color: var(--muted);
  margin-top: 2px;
}
.ph-frame .ph-info .ph-year {
  font-family: var(--font-mono);
  font-size: 7px;
  color: var(--muted);
  margin-top: 4px;
}

/* Photo visual gradients */
.ph-gradient-1 { background: linear-gradient(135deg, #1a1a24, #2a2a20); }
.ph-gradient-2 { background: linear-gradient(135deg, #1a2024, #202a2a); }
.ph-gradient-3 { background: linear-gradient(135deg, #1a1a1a, #24201a); }
.ph-gradient-4 { background: linear-gradient(135deg, #1a1a24, #1a2420); }
.ph-gradient-5 { background: linear-gradient(135deg, #201a1a, #24201a); }
.ph-gradient-6 { background: linear-gradient(135deg, #1a2224, #1a1a20); }
.ph-gradient-7 { background: linear-gradient(135deg, #1a1a1a, #242424); }

/* ── Transmission / Article List ── */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.article-row {
  display: grid;
  grid-template-columns: 48px 1fr 140px;
  gap: 24px;
  padding: 20px 24px;
  background: var(--surface);
  cursor: pointer;
  transition: all 0.3s ease;
  align-items: center;
  border: 1px solid transparent;
}
.article-row:hover {
  border-color: rgba(34, 240, 160, 0.08);
  background: #0e131e;
}

.article-row .ar-num {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  opacity: 0.5;
}
.article-row .ar-title {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: color 0.3s ease;
}
.article-row:hover .ar-title { color: var(--accent); }
.article-row .ar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: flex-end;
}
.article-row .ar-tag {
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
}
.article-row .ar-date {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--muted);
  white-space: nowrap;
}

/* ── Entity / About ── */
.entity-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.entity-left h2 {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.entity-left .entity-role {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 24px;
}
.entity-left .entity-bio {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.9;
  max-width: 400px;
}

.timeline {
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--border);
}

.timeline .tl-item {
  position: relative;
  padding-bottom: 36px;
}
.timeline .tl-item:last-child {
  padding-bottom: 0;
}
.timeline .tl-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--muted);
  transition: all 0.3s ease;
}
.timeline .tl-item:hover::before {
  background: var(--accent);
  border-color: var(--accent);
}
.timeline .tl-item.current::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(34, 240, 160, 0.3);
}

.timeline .tl-item .tl-year {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  margin-bottom: 2px;
}
.timeline .tl-item .tl-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
  margin-bottom: 2px;
}
.timeline .tl-item .tl-desc {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Entity Contact ── */
.entity-contact {
  margin-top: 40px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.entity-contact a {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color 0.3s ease;
  position: relative;
}
.entity-contact a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.35s ease;
}
.entity-contact a:hover { color: var(--text); }
.entity-contact a:hover::after { width: 100%; }

/* ── Footer ── */
footer {
  position: relative;
  z-index: 1;
  padding: 40px 48px;
  border-top: 1px solid var(--border);
}
footer .ft-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
footer .ft-location {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
footer .ft-copy {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .project-grid {
    grid-template-columns: 1fr 1fr;
  }
  .project-card.featured {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  nav { padding: 16px 20px; }
  nav .nav-links { gap: 14px; }
  nav .nav-links a { font-size: 8px; }
  .hero { padding: 120px 20px 60px; }
  .hero-title { font-size: clamp(28px, 8vw, 44px); }
  .hero-sub { font-size: 13px; }
  .sector { padding: 80px 20px 60px; }
  .sector-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .sector-header .sh-left h2 { font-size: 22px; }
  .track-grid { grid-template-columns: 1fr; }
  .track-card { padding: 32px 24px; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }
  .entity-grid { grid-template-columns: 1fr; gap: 48px; }
  .article-row { grid-template-columns: 32px 1fr; gap: 12px; padding: 16px; }
  .article-row .ar-right { display: none; }
  footer { padding: 32px 20px; }
}

@media (max-width: 480px) {
  .filter-bar .filter-btn { padding: 6px 12px; font-size: 7px; }
  .track-card { padding: 24px 20px; }
  .track-card .track-visual { height: 80px; }
}