:root {
  --bg-main: #0a0a0f;
  --bg-card: rgba(27, 27, 35, 0.6);
  --bg-card-hover: rgba(46, 46, 60, 0.8);
  --bg-pill: rgba(255, 255, 255, 0.1);
  --border-color: rgba(255, 255, 255, 0.1);
  --text-main: #ffffff;
  --text-muted: #b4b4cc;
  --text-muted-dark: #8888a0;
  --primary-gradient: linear-gradient(135deg, #7c3aed, #3b82f6);
  --secondary-gradient: linear-gradient(135deg, #10b981, #3b82f6);
  --accent: #7c3aed;
  --accent-blue: #3b82f6;
  --accent-glow: rgba(124, 58, 237, 0.4);
  --accent-glow-blue: rgba(59, 130, 246, 0.3);
  --font-mono: "Space Mono", "Monaco", "Lucida Console", monospace;
  --font-sans: "Inter", "Roboto", "Helvetica Neue", sans-serif;
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --ease-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-quart: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --hf: #f59e0b;
  --hf-glow: rgba(245, 158, 11, 0.3);
}

[data-theme="light"] {
  --bg-main: #f5f5fa;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(230, 230, 240, 0.9);
  --bg-pill: rgba(0, 0, 0, 0.06);
  --border-color: rgba(0, 0, 0, 0.1);
  --text-main: #111118;
  --text-muted: #555568;
  --text-muted-dark: #8888a0;
  --accent-glow: rgba(124, 58, 237, 0.2);
  --accent-glow-blue: rgba(59, 130, 246, 0.15);
}

[data-theme="light"] body::after {
  opacity: 0.015;
}

[data-theme="light"] .orb-1 { background: rgba(124, 58, 237, 0.06); }
[data-theme="light"] .orb-2 { background: rgba(59, 130, 246, 0.05); }
[data-theme="light"] .orb-3 { background: rgba(16, 185, 129, 0.04); }

[data-theme="light"] .hero-grid-lines {
  background-image: linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

[data-theme="light"] .pcard,
[data-theme="light"] .mcard,
[data-theme="light"] .clink,
[data-theme="light"] .sg,
[data-theme="light"] .sk-pill {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .terminal {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .terminal:hover {
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] #loader { background: var(--bg-main); }
[data-theme="light"] .loader-bar-wrap { background: rgba(0, 0, 0, 0.06); }
[data-theme="light"] .marquee-wrap { background: rgba(255, 255, 255, 0.5); }
[data-theme="light"] footer { background: rgba(245, 245, 250, 0.9); }
[data-theme="light"] .mobile-nav { background: rgba(245, 245, 250, 0.97); }
[data-theme="light"] .hamburger span { background: var(--text-main); }
[data-theme="light"] .nav-badge { color: var(--text-muted); }
[data-theme="light"] .nav-badge:hover { color: var(--text-main); }
[data-theme="light"] .sk-pill .sk-tooltip { background: rgba(245, 245, 250, 0.95); border-color: var(--border-color); }
[data-theme="light"] .sk-pill .sk-tooltip::after { border-top-color: rgba(245, 245, 250, 0.95); }
[data-theme="light"] .clink .copy-toast { background: rgba(16, 185, 129, 0.1); }
[data-theme="light"] .back-to-top { background: var(--bg-card); box-shadow: 0 2px 12px rgba(0,0,0,0.06); }

html {
  background-color: var(--bg-main);
  scroll-behavior: smooth;
}

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

body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  color: var(--text-main);
  background-color: var(--bg-main);
  font-family: var(--font-sans);
  cursor: none;
  transition: background-color 1s ease, filter 1s ease;
}

/* ─── ACCESSIBILITY: restore cursor on touch / reduced-motion ─── */
@media (pointer: coarse) {
  body { cursor: auto; }
  body::after { display: none; }
  #cursor-dot, #cursor-ring { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  body { cursor: auto; }
  #cursor-dot, #cursor-ring { display: none; }
  * { transition: none !important; animation: none !important; }
}

/* ─── FOCUS VISIBLE ─── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

#progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--primary-gradient);
  z-index: 9999;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: width 0.05s linear;
}

#cursor-dot {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, background 0.2s, transform 0.1s;
  box-shadow: 0 0 10px var(--accent-glow);
}

#cursor-ring {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(124, 58, 237, 0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9997;
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease-expo), height 0.3s var(--ease-expo), border-color 0.3s, background 0.3s;
}

body.on-link #cursor-dot {
  width: 12px;
  height: 12px;
  background: var(--accent-blue);
  box-shadow: 0 0 14px var(--accent-glow-blue);
}

body.on-link #cursor-ring {
  width: 50px;
  height: 50px;
  border-color: rgba(59, 130, 246, 0.5);
}

body.on-btn #cursor-ring {
  width: 56px;
  height: 56px;
  background: rgba(124, 58, 237, 0.08);
  border-color: rgba(124, 58, 237, 0.7);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 9980;
  mix-blend-mode: overlay;
}

#loader {
  position: fixed;
  inset: 0;
  z-index: 9990;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}

#loader.out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  overflow: hidden;
}

.loader-name span {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
  animation: rise 0.7s var(--ease-expo) forwards;
}

.loader-bar-wrap {
  width: 180px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar {
  height: 100%;
  width: 0%;
  background: var(--primary-gradient);
  animation: loadbar 0.9s var(--ease-quart) forwards;
  animation-delay: 0.3s;
}

@keyframes rise {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes loadbar {
  to {
    width: 100%;
  }
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 800;
  padding: 1rem 5vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: background 0.5s ease, backdrop-filter 0.5s ease, border-color 0.5s ease;
  border-bottom: 1px solid transparent;
}

nav.scrolled {
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(24px) saturate(180%);
  border-color: var(--border-color);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: 0.03em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  transition: color 0.25s;
  padding: 0.2rem 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--primary-gradient);
  transition: width 0.3s var(--ease-expo);
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-main);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  backdrop-filter: blur(10px);
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.nav-badge:hover {
  background: rgba(124, 58, 237, 0.15);
  border-color: rgba(124, 58, 237, 0.4);
  box-shadow: 0 0 20px var(--accent-glow);
  color: var(--text-main);
}

.theme-toggle {
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  line-height: 1;
}
.theme-toggle:hover {
  background: rgba(124, 58, 237, 0.15);
  border-color: rgba(124, 58, 237, 0.4);
  transform: scale(1.1);
}
.theme-toggle:active {
  transform: scale(0.95);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.9);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1) }
  50% { opacity: 0.5; transform: scale(0.8) }
}

/* ─── HAMBURGER ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 850;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-expo), opacity 0.2s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: 64px;
  background: rgba(10, 10, 15, 0.97);
  backdrop-filter: blur(24px);
  z-index: 799;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}
.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.25s;
}
.mobile-nav a:hover, .mobile-nav a.active {
  color: var(--text-main);
}

#hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: orb-float 8s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(124, 58, 237, 0.12);
  top: -100px;
  right: -50px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(59, 130, 246, 0.1);
  bottom: -80px;
  right: 100px;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: rgba(16, 185, 129, 0.06);
  top: 40%;
  left: 45%;
  animation-delay: -5s;
}

@keyframes orb-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 80% at 60% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 60% 50%, black 30%, transparent 100%);
}

.hero-left {
  padding: 6rem 3rem 5rem 5vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.hero-right {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.reveal-wrap {
  overflow: hidden;
  display: block;
}

.reveal-inner {
  display: block;
  transform: translateY(105%);
  opacity: 0;
  transition: transform 0.9s var(--ease-expo), opacity 0.5s ease;
}

.reveal-inner.show {
  transform: translateY(0);
  opacity: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-tag::before {
  content: "//";
  opacity: 0.5;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-main);
  position: relative;
  display: inline-block;
}

.hero-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-blue), #10b981, var(--accent));
  background-size: 300% 100%;
  border-radius: 2px;
  animation: gradient-border 4s ease infinite;
  opacity: 0.6;
}

@keyframes gradient-border {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-title-line {
  display: block;
  white-space: nowrap;
}

.scramble-word {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  vertical-align: bottom;
  font-variant-numeric: tabular-nums;
}

.hero-title-line.grad-line .scramble-word {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.4rem;
  letter-spacing: 0.02em;
  min-height: 1.6em;
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 380px;
  margin-top: 1.75rem;
}

.hero-desc strong {
  color: var(--text-main);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease-expo), box-shadow 0.3s;
  will-change: transform;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-pill);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  color: var(--text-main);
  border-color: rgba(124, 58, 237, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.08);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn:hover::after {
  opacity: 1;
}

.hero-stats {
  display: flex;
  gap: 0;
  margin-top: 3rem;
  width: fit-content;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
}

.hstat {
  padding: 1rem 1.5rem;
  border-right: 1px solid var(--border-color);
  min-width: 80px;
}

.hstat:last-child {
  border-right: none;
}

.hstat-n {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  display: block;
  min-height: 1.6rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
}

.hstat-n.counting {
  animation: count-pop 0.3s ease;
}

@keyframes count-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.hstat-l {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  margin-top: 0.25rem;
}

.terminal {
  width: 88%;
  max-width: 460px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), 0 0 80px rgba(124, 58, 237, 0.06);
  transition: box-shadow 0.5s;
  display: flex;
  flex-direction: column;
}

.terminal:hover {
  box-shadow: 0 50px 100px rgba(0, 0, 0, 0.7), 0 0 100px rgba(124, 58, 237, 0.12);
}

.t-bar {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  flex-shrink: 0;
}

.t-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.t-title {
  font-size: 0.6rem;
  color: var(--text-muted-dark);
  letter-spacing: 0.1em;
  margin-left: 0.25rem;
  flex: 1;
  text-align: center;
}

.t-body {
  padding: 1rem 1.2rem;
  line-height: 1.9;
  flex: 1;
  max-height: 320px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 58, 237, 0.3) transparent;
}

.t-body::-webkit-scrollbar {
  width: 4px;
}

.t-body::-webkit-scrollbar-track {
  background: transparent;
}

.t-body::-webkit-scrollbar-thumb {
  background: rgba(124, 58, 237, 0.3);
  border-radius: 2px;
}

.tl {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
}

.tl.prompt::before {
  content: "❯ ";
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tl.out {
  color: var(--text-muted);
  padding-left: 1rem;
}

.tl.ok {
  color: #4ade80;
  padding-left: 1rem;
}

.tl.err {
  color: #f87171;
  padding-left: 1rem;
}

.tl.dim {
  color: var(--text-muted-dark);
  padding-left: 1rem;
}

.tl.info {
  color: #67e8f9;
  padding-left: 1rem;
}

.tl.warn {
  color: #fbbf24;
  padding-left: 1rem;
}

.tl.blank {
  height: 0.6rem;
  display: block;
}

.t-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem 0.9rem;
  border-top: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.015);
  flex-shrink: 0;
  position: relative;
}

.term-new-indicator {
  position: absolute;
  top: -4px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse 1.5s ease infinite;
  display: none;
}
.term-new-indicator.show {
  display: block;
}

.t-input-prompt {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.74rem;
  user-select: none;
  flex-shrink: 0;
}

#term-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  flex: 1;
  caret-color: var(--accent);
  cursor: text !important;
  line-height: 1.4;
}

#term-input::placeholder {
  color: var(--text-muted-dark);
  opacity: 0.5;
}

.blink {
  display: inline-block;
  width: 7px;
  height: 0.9em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: bk 1s step-end infinite;
  margin-left: 2px;
}

@keyframes bk {
  0%, 100% { opacity: 1 }
  50% { opacity: 0 }
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 5vw;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0.35;
  z-index: 10;
}

.scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(to right, var(--accent), transparent);
  animation: sline 2s ease infinite;
}

@keyframes sline {
  0%, 100% { width: 40px; opacity: .4 }
  50% { width: 65px; opacity: .9 }
}

.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 0;
  background: rgba(27, 27, 35, 0.4);
  backdrop-filter: blur(10px);
}

.marquee-track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  animation: mq 40s linear infinite;
}

.marquee-wrap:hover .marquee-track {
  animation-play-state: paused;
}

.mitem {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  transition: color 0.2s;
}

.mitem:hover {
  color: var(--text-muted);
}

.mitem::after {
  content: "◆";
  font-size: 0.4rem;
  opacity: 0.4;
  color: var(--accent);
}

@keyframes mq {
  from { transform: translateX(0) }
  to { transform: translateX(-50%) }
}

.sec {
  position: relative;
}

.sec::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  z-index: 0;
}

#skills.sec::before {
  background-image: radial-gradient(circle, var(--accent) 1px, transparent 1px);
  background-size: 24px 24px;
}

#projects.sec::before {
  background-image: linear-gradient(45deg, var(--accent) 1px, transparent 1px),
                    linear-gradient(-45deg, var(--accent) 1px, transparent 1px);
  background-size: 32px 32px;
}

#models.sec::before {
  background-image: radial-gradient(circle, var(--hf) 1px, transparent 1px);
  background-size: 20px 20px;
}

#contact.sec::before {
  background-image: linear-gradient(var(--accent) 1px, transparent 1px),
                    linear-gradient(90deg, var(--accent) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.02;
}

.sec-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 7rem 5vw;
}

.sec-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: var(--accent);
  margin-bottom: 1rem;
}

.sec-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  color: var(--text-main);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.sec-sub {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 480px;
  margin-top: 0.75rem;
}

.sec-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color) 20%, var(--accent) 50%, var(--border-color) 80%, transparent);
  opacity: 0.5;
}

#about {
  background: linear-gradient(180deg, var(--bg-main) 0%, rgba(20, 20, 30, 1) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  margin-top: 5rem;
  align-items: start;
}

.about-body p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.about-body strong {
  color: var(--text-main);
  font-weight: 600;
}

.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: #a78bfa;
  margin: 0 0.1rem;
  vertical-align: middle;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
}

@media (min-width: 901px) {
  .stat-grid {
    position: sticky;
    top: 100px;
  }
}

.sg {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  padding: 1.6rem 1.4rem;
  transition: background 0.2s;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.sg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(200px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 58, 237, 0.12), transparent);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.sg:hover {
  background: var(--bg-card-hover);
}

.sg:hover::before {
  opacity: 1;
}

.sg-n {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sg-l {
  font-family: var(--font-mono);
  font-size: 0.54rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  margin-top: 0.4rem;
}

.sg-wide {
  grid-column: 1 / -1;
}

#skills {
  background: var(--bg-main);
}

.skills-groups {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-top: 5rem;
}

.sk-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.sk-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.sk-pill {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: all 0.2s var(--ease-quart);
  cursor: default;
  position: relative;
  overflow: visible;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.sk-pill .sk-icon {
  font-size: 0.9rem;
  line-height: 1;
  flex-shrink: 0;
}

.sk-pill .sk-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: rgba(15, 15, 25, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  font-size: 0.65rem;
  color: var(--text-muted);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s var(--ease-expo), visibility 0.2s;
  z-index: 100;
}
.sk-pill .sk-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(15, 15, 25, 0.95);
}
.sk-pill:hover .sk-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.sk-pill::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(160px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 58, 237, 0.18), transparent);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.sk-pill:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.4);
  color: var(--text-main);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.sk-pill:hover::before {
  opacity: 1;
}

.sk-pill.star {
  background: rgba(124, 58, 237, 0.12);
  border-color: rgba(124, 58, 237, 0.3);
  color: #a78bfa;
}

.sk-pill.star:hover {
  background: rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.6);
  color: #c4b5fd;
}

#projects {
  background: linear-gradient(180deg, var(--bg-main) 0%, rgba(15, 15, 25, 1) 100%);
}

.proj-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1rem;
}

.proj-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

.pfilter {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  color: var(--text-muted-dark);
  cursor: pointer;
  transition: all 0.2s;
}
.pfilter:hover, .pfilter.active {
  background: rgba(124, 58, 237, 0.15);
  border-color: rgba(124, 58, 237, 0.4);
  color: var(--text-main);
}
.pfilter.active {
  box-shadow: 0 0 12px var(--accent-glow);
}

.pcard.hidden {
  display: none;
}

.proj-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  margin-top: 4rem;
}

.pcard {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 2rem 1.8rem;
  text-decoration: none;
  display: block;
  color: inherit;
  grid-column: span 6;
  transform-style: preserve-3d;
  transition: border-color 0.3s, box-shadow 0.4s, background 0.2s;
  will-change: transform;
}

.pcard.wide {
  grid-column: span 8;
}

.pcard.narrow {
  grid-column: span 4;
}

.pcard::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: radial-gradient(350px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 58, 237, 0.1), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.pcard:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.35);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6), 0 0 60px rgba(124, 58, 237, 0.08);
}

.pcard:hover::before {
  opacity: 1;
}

.pcard::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.pcard:hover::after {
  opacity: 1;
}

.pcard-shine {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.03) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.pcard:hover .pcard-shine {
  opacity: 1;
}

.pcard-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.4rem;
}

.pcard-cat {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: #a78bfa;
}

.pcard-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted-dark);
}

.pcard-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.25s;
}

.pcard:hover .pcard-title {
  color: #a78bfa;
}

.pcard-arrow {
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.25s, transform 0.3s var(--ease-expo);
  font-size: 1rem;
  color: #a78bfa;
}

.pcard:hover .pcard-arrow {
  opacity: 1;
  transform: translateX(0);
}

.pcard-rule {
  width: 24px;
  height: 1px;
  background: var(--border-color);
  margin-bottom: 0.9rem;
  transition: width 0.35s var(--ease-expo), background 0.3s;
}

.pcard:hover .pcard-rule {
  width: 48px;
  background: var(--accent);
}

.pcard-desc {
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--text-muted);
}

.pcard-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.3rem;
}

.ptag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  padding: 0.18rem 0.5rem;
  border-radius: 3px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  transition: color 0.2s, border-color 0.2s;
}

.pcard:hover .ptag {
  color: var(--text-muted);
  border-color: rgba(255, 255, 255, 0.15);
}

.pcard-github {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-muted-dark);
  text-decoration: none;
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  display: inline-block;
  margin-top: 1rem;
  transition: color 0.2s, border-color 0.2s;
}
.pcard-github:hover {
  color: var(--text-muted);
  border-color: rgba(255, 255, 255, 0.2);
}

#models {
  background: var(--bg-main);
}

.models-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1rem;
}

.hf-strip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted-dark);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 4rem;
}

.mcard {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.8rem;
  text-decoration: none;
  display: block;
  color: inherit;
  transform-style: preserve-3d;
  transition: border-color 0.3s, box-shadow 0.4s, background 0.2s;
  will-change: transform;
}

.mcard::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(245, 158, 11, 0.1), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.mcard:hover {
  background: var(--bg-card-hover);
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 50px rgba(245, 158, 11, 0.06);
}

.mcard:hover::before {
  opacity: 1;
}

.mcard::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(135deg, #f59e0b, #fb923c);
  opacity: 0;
  transition: opacity 0.3s;
}

.mcard:hover::after {
  opacity: 1;
}

.mcard-shine {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.025) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.mcard:hover .mcard-shine {
  opacity: 1;
}

.mcard-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.2rem;
  gap: 0.5rem;
}

.mcard-type {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  white-space: nowrap;
}

.mcard-type.model {
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.mcard-type.dataset {
  color: #67e8f9;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.mcard-dl {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-muted-dark);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.mcard-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
  transition: color 0.25s;
}

.mcard:hover .mcard-title {
  color: #fbbf24;
}

.mcard-rule {
  width: 24px;
  height: 1px;
  background: var(--border-color);
  margin-bottom: 0.9rem;
  transition: width 0.35s var(--ease-expo), background 0.3s;
}

.mcard:hover .mcard-rule {
  width: 44px;
  background: var(--hf);
}

.mcard-desc {
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--text-muted);
}

.mcard-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1.1rem;
}

.mtag {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  padding: 0.16rem 0.48rem;
  border-radius: 3px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
}

.mcard-hf {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  display: inline-block;
  margin-top: 1rem;
  transition: color 0.2s, border-color 0.2s;
}
.mcard-hf.model-link {
  color: #fbbf24;
}
.mcard-hf.dataset-link {
  color: #67e8f9;
  border-color: rgba(6, 182, 212, 0.3);
}

#contact {
  background: linear-gradient(180deg, var(--bg-main) 0%, rgba(18, 12, 30, 1) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  margin-top: 5rem;
  align-items: start;
}

.contact-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 5.5vw, 5.5rem);
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.contact-headline .grad {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-sub {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-top: 1.5rem;
  max-width: 320px;
}

.clinks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.clink {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.3rem;
  border-radius: 10px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, background 0.2s, transform 0.3s var(--ease-expo), box-shadow 0.3s;
}

.clink .copy-toast {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #4ade80;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.3rem 0.8rem;
  border-radius: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s var(--ease-expo), visibility 0.2s;
  pointer-events: none;
  z-index: 10;
}
.clink .copy-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.clink::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 58, 237, 0.08), transparent);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.clink:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.35);
  transform: translateX(8px);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4), 0 0 30px rgba(124, 58, 237, 0.06);
}

.clink:hover::before {
  opacity: 1;
}

.clink::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.25s;
  border-radius: 2px 0 0 2px;
}

.clink:hover::after {
  opacity: 1;
}

.clink-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  flex-shrink: 0;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background 0.2s, border-color 0.2s;
}

.clink:hover .clink-icon {
  background: rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.45);
}

.clink-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
}

.clink-val {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted-dark);
  margin-top: 0.1rem;
  word-break: break-all;
  transition: color 0.2s;
}

.clink:hover .clink-val {
  color: var(--text-muted);
}

.clink-arrow {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--text-muted-dark);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.25s, transform 0.3s var(--ease-expo);
}

.clink:hover .clink-arrow {
  opacity: 1;
  transform: translateX(0);
  color: #a78bfa;
}

footer {
  background: rgba(10, 10, 15, 0.9);
  border-top: 1px solid var(--border-color);
  padding: 2rem 5vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  backdrop-filter: blur(20px);
}

.foot-l {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-muted-dark);
}

.foot-l em {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-style: normal;
}

.foot-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.foot-links a {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted-dark);
  text-decoration: none;
  transition: color 0.2s;
}

.foot-links a:hover {
  color: var(--text-main);
}

.r {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease-expo), transform 0.8s var(--ease-expo);
}

.r.vis {
  opacity: 1;
  transform: none;
}

.rd1 { transition-delay: .07s }
.rd2 { transition-delay: .14s }
.rd3 { transition-delay: .21s }
.rd4 { transition-delay: .28s }

/* ─── BACK TO TOP ─── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s var(--ease-expo), background 0.2s, border-color 0.2s;
  z-index: 700;
  font-size: 1.1rem;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.4);
  color: var(--text-main);
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }

  #hero { grid-template-columns: 1fr; }
  .hero-left { padding: 4rem 5vw 3rem; }
  .hero-right {
    display: flex;
    order: 2;
    padding: 0 5vw 3rem;
  }
  .terminal { width: 100%; max-width: 100%; }

  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .models-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .pcard, .pcard.wide, .pcard.narrow { grid-column: span 12; }
}

@media (max-width: 640px) {
  .sec-inner { padding: 5rem 1.5rem; }
  nav { padding: 0.8rem 1.5rem; }
  footer { flex-direction: column; align-items: flex-start; }
  .hero-stats { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ── Timeline ─────────────────────────────────────── */
.timeline-track {
  position: relative;
  padding-left: 2rem;
  margin-top: 3rem;
}
.timeline-track::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
}
.tl-item {
  position: relative;
  padding: 0 0 2.5rem 2rem;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -2.4rem;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--accent);
  transition: background 0.3s;
}
.tl-dot.active {
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.tl-date {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
  letter-spacing: 0.05em;
}
.tl-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}
.tl-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 560px;
}