/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scrollbar-color: var(--border) var(--bg); scrollbar-width: thin; }

:root {
  --bg:         oklch(0.96 0.012 75);
  --bg-surface: oklch(0.995 0.005 75);
  --bg-raised:  oklch(0.975 0.009 75);
  --fg:         oklch(0.18 0.04 255);
  --fg-muted:   oklch(0.42 0.03 255);
  --amber:      oklch(0.28 0.09 255);
  --amber-2:    oklch(0.40 0.08 255);
  --amber-dim:  oklch(0.28 0.09 255 / 0.10);
  --amber-glow: 0 0 40px -10px oklch(0.28 0.09 255 / 0.12);
  --border:     oklch(0.87 0.008 75 / 0.6);
  --success:    oklch(0.48 0.16 155);
  --warning:    oklch(0.52 0.15 80);
  --danger:     oklch(0.50 0.22 25);
  --radius:     0.5rem;
  --radius-lg:  1rem;
  --shadow-sm:  0 1px 4px oklch(0.28 0.09 255 / 0.07), 0 0 1px oklch(0.28 0.09 255 / 0.04);
  --shadow-md:  0 8px 24px -6px oklch(0.28 0.09 255 / 0.11), 0 2px 8px -2px oklch(0.28 0.09 255 / 0.06);
  --shadow-lg:  0 24px 60px -16px oklch(0.28 0.09 255 / 0.16), 0 6px 16px -6px oklch(0.28 0.09 255 / 0.07);
  --ease:       cubic-bezier(.4,0,.2,1);
  --font-d:     'Playfair Display', Georgia, serif;
  --font-s:     'Inter', system-ui, sans-serif;
  --font-m:     'JetBrains Mono', ui-monospace, monospace;
}

body {
  position: relative;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-s);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* Ambient background — very subtle on light theme */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1100px 620px at 12% -8%, oklch(0.28 0.09 255 / 0.03), transparent 60%),
    radial-gradient(900px 520px at 108% 8%, oklch(0.50 0.07 255 / 0.03), transparent 60%),
    radial-gradient(700px 500px at 50% 115%, oklch(0.80 0.05 75 / 0.04), transparent 60%);
}

h1,h2,h3 {
  font-family: var(--font-d);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

::selection { background: oklch(0.28 0.09 255 / 0.12); color: var(--fg); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: oklch(0.28 0.09 255 / 0.30); }

a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── GRID BG ── */
.grid-bg {
  background-image:
    linear-gradient(to right, oklch(0.28 0.09 255 / 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(0.28 0.09 255 / 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* ── UTILITIES ── */
.label { font-family: var(--font-m); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--amber); }
.gradient-text { background: linear-gradient(135deg, oklch(0.22 0.09 255) 0%, oklch(0.42 0.08 255) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.surface { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease); }
.surface-elevated { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease); }
.surface:hover, .surface-elevated:hover { box-shadow: var(--shadow-md); border-color: oklch(0.28 0.09 255 / 0.25); }
.chip { display: inline-flex; align-items: center; padding: 0.3rem 0.7rem; border-radius: 9999px; font-family: var(--font-m); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.05em; border: 1px solid oklch(0.28 0.09 255 / 0.24); background: var(--amber-dim); color: var(--amber); box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.5); }
.tag { display: inline-block; padding: 0.22rem 0.55rem; border: 1px solid oklch(0.28 0.09 255 / 0.20); background: oklch(0.28 0.09 255 / 0.08); font-family: var(--font-m); font-size: 0.65rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-muted); border-radius: 4px; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
@media(min-width:1024px){ .container { padding: 0 2.5rem; } }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 0.625rem; border: 1px solid transparent;
  font-family: var(--font-m); font-weight: 600; font-size: 0.7rem;
  letter-spacing: 0.12em; text-transform: uppercase; padding: 0.75rem 1.5rem;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
              background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn-amber { background: linear-gradient(135deg, var(--amber), var(--amber-2)); color: oklch(0.99 0.005 75); box-shadow: var(--amber-glow); }
.btn-amber:hover { transform: translateY(-2px); box-shadow: 0 14px 32px -12px oklch(0.28 0.09 255 / 0.35); }
.btn-amber:active { transform: translateY(0); }
.btn-outline { border-color: var(--border); background: var(--bg-surface); color: var(--fg-muted); }
.btn-outline:hover { border-color: oklch(0.28 0.09 255 / 0.35); color: var(--amber); background: var(--bg-raised); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-amber-outline { border-color: oklch(0.28 0.09 255 / 0.3); background: var(--amber-dim); color: var(--amber); }
.btn-amber-outline:hover { background: oklch(0.28 0.09 255 / 0.12); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ── HEADER ── */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
header.scrolled { background: oklch(0.96 0.012 75 / 0.93); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2.5rem; max-width: 1280px; margin: 0 auto; }
.logo { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-d); font-size: 1.1rem; font-weight: 700; }
.logo-badge { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border: 1px solid var(--border); background: linear-gradient(150deg, var(--bg-raised), var(--bg-surface)); font-family: var(--font-m); font-size: 0.75rem; font-weight: 700; color: var(--amber); border-radius: var(--radius); box-shadow: inset 0 0 0 1px oklch(0.28 0.09 255 / 0.10); }
.logo-name { display: none; font-weight: 700; }
@media(min-width:640px){ .logo-name { display: inline; } }
.nav-desktop { display: none; align-items: center; gap: 0.25rem; }
@media(min-width:1024px){ .nav-desktop { display: flex; } }
.nav-link { padding: 0.5rem 0.85rem; font-family: var(--font-m); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); transition: color 0.2s var(--ease), background 0.2s var(--ease); border-radius: 9999px; }
.nav-link:hover { color: var(--fg); background: oklch(0.28 0.09 255 / 0.05); }
.nav-link.active { color: var(--amber); background: var(--amber-dim); }
.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.resume-btn { display: none; }
@media(min-width:1024px){ .resume-btn { display: inline-flex; } }
.menu-btn { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; border: 1px solid var(--border); background: var(--bg-surface); border-radius: var(--radius); transition: border-color 0.2s var(--ease); }
.menu-btn:hover { border-color: oklch(0.28 0.09 255 / 0.35); }
@media(min-width:1024px){ .menu-btn { display: none; } }
.mobile-menu { display: none; border-top: 1px solid var(--border); background: oklch(0.96 0.012 75 / 0.97); backdrop-filter: blur(20px); box-shadow: var(--shadow-md); }
.mobile-menu.open { display: block; }
.mobile-menu-inner { max-width: 1280px; margin: 0 auto; padding: 1rem 1.5rem; display: flex; flex-direction: column; gap: 0.25rem; }
.mobile-nav-link { padding: 0.75rem; font-family: var(--font-m); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); border-radius: var(--radius); transition: all 0.2s var(--ease); }
.mobile-nav-link:hover { background: oklch(0.28 0.09 255 / 0.05); color: var(--fg); }
.mobile-nav-link.active { background: var(--amber-dim); color: var(--amber); }

/* ── FOOTER ── */
footer { position: relative; border-top: 1px solid var(--border); background: oklch(0.93 0.012 75 / 0.8); margin-top: auto; }
footer::before { content: ''; position: absolute; top: -1px; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, oklch(0.28 0.09 255 / 0.2), transparent); }
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 4rem 2.5rem; display: grid; gap: 2.5rem; }
@media(min-width:1024px){ .footer-inner { grid-template-columns: 2fr 1fr 1fr; } }
.footer-brand { font-family: var(--font-d); font-size: 1.4rem; margin-bottom: 0.75rem; }
.footer-tagline { font-size: 0.875rem; color: var(--fg-muted); max-width: 28rem; line-height: 1.7; }
.footer-location { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-m); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); margin-top: 1.25rem; }
.footer-section-title { font-family: var(--font-m); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--amber); margin-bottom: 1rem; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: 0.875rem; color: var(--fg-muted); transition: color 0.2s var(--ease); display: inline-flex; align-items: center; gap: 0.5rem; }
.footer-links a:hover { color: var(--amber); }
.footer-bottom { border-top: 1px solid var(--border); }
.footer-bottom-inner { max-width: 1280px; margin: 0 auto; padding: 1.5rem 2.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem; font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); }

/* ── PAGE WRAPPER ── */
.page { display: flex; flex-direction: column; min-height: 100vh; }
main { flex: 1; padding-top: 5rem; }

/* ── SECTION COMMONS ── */
section { border-bottom: 1px solid var(--border); }
.section-pad { padding: 6rem 0; }
@media(max-width:768px){ .section-pad { padding: 3rem 0; } }

/* ── HOME HERO ── */
.hero { position: relative; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; object-fit: cover; width: 100%; height: 100%; opacity: 0.2; }
.hero-grid { position: absolute; inset: 0; opacity: 0.5; }
.hero-fade { position: absolute; inset: 0; background: linear-gradient(to bottom, oklch(0.96 0.012 75 / 0.3), oklch(0.96 0.012 75 / 0.65), var(--bg)); }
.hero-inner { position: relative; max-width: 1280px; margin: 0 auto; padding: 6rem 2.5rem 5rem; display: grid; gap: 3.5rem; align-items: start; }
@media(min-width:1024px){ .hero-inner { grid-template-columns: 8fr 4fr; } }
.hero-eyebrow { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.hero-eyebrow-line { height: 1px; width: 2.5rem; background: var(--amber); }
.hero-h1 { font-family: var(--font-d); font-size: clamp(3rem, 8vw, 5.5rem); line-height: 0.95; margin-bottom: 1.5rem; }
.hero-desc { font-size: 1.05rem; color: var(--fg-muted); max-width: 36rem; line-height: 1.75; margin-bottom: 2rem; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2.5rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-card { background: var(--bg-surface); border: 1px solid var(--border); border-left: 3px solid oklch(0.28 0.09 255 / 0.3); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-lg); }
.hero-portrait { position: relative; aspect-ratio: 4/5; overflow: hidden; border-radius: 0.75rem; border: 1px solid var(--border); margin-bottom: 1.25rem; }
.hero-portrait img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.hero-portrait-fade { display: none; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; border-top: 1px solid var(--border); padding-top: 1.5rem; margin-top: 0.5rem; }
.hero-stat-val { font-family: var(--font-d); font-size: 1.75rem; color: var(--amber); line-height: 1; }
.hero-stat-label { font-family: var(--font-m); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted); margin-top: 0.25rem; }
.hero-social { display: flex; gap: 0.5rem; margin-top: 1.25rem; border-top: 1px solid var(--border); padding-top: 1.25rem; }
.social-btn { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border: 1px solid var(--border); border-radius: var(--radius); transition: all 0.2s var(--ease); }
.social-btn:hover { border-color: oklch(0.28 0.09 255 / 0.35); color: var(--amber); transform: translateY(-2px); }
.hero-location { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); margin-top: 1.25rem; border-top: 1px solid var(--border); padding-top: 1rem; }

/* ── BACKGROUND SECTION ── */
.bg-section-grid { display: grid; gap: 3rem; }
@media(min-width:1024px){ .bg-section-grid { grid-template-columns: 4fr 8fr; align-items: start; } }
.bg-section-text { display: flex; flex-direction: column; gap: 1.25rem; }
.bg-section-text p { color: var(--fg-muted); line-height: 1.85; }
.bg-section-text p span { color: var(--fg); }
blockquote { border-left: 2px solid var(--amber); padding-left: 1.25rem; font-family: var(--font-d); font-size: 1.2rem; font-style: italic; color: var(--fg); }

/* ── EXPERTISE GRID (seamless tile grid) ── */
.expertise-grid { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-top: 3rem; }
@media(min-width:768px){ .expertise-grid { grid-template-columns: repeat(2,1fr); } }
@media(min-width:1024px){ .expertise-grid { grid-template-columns: repeat(3,1fr); } }
.expertise-card { position: relative; background: var(--bg-surface); padding: 1.75rem; transition: background 0.25s var(--ease); }
.expertise-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--amber), transparent); opacity: 0; transition: opacity 0.25s var(--ease); }
.expertise-card:hover { background: var(--bg-raised); }
.expertise-card:hover::before { opacity: 0.5; }
.expertise-num { font-family: var(--font-m); font-size: 0.7rem; color: var(--amber); margin-bottom: 0.75rem; }
.expertise-title { font-family: var(--font-d); font-size: 1.15rem; margin-bottom: 0.75rem; }
.expertise-body { font-size: 0.85rem; color: var(--fg-muted); line-height: 1.7; margin-bottom: 1.25rem; }
.expertise-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* ── PROJECTS LIST ── */
.project-article { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; background: var(--bg-surface); box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease); }
.project-article:hover { border-color: oklch(0.28 0.09 255 / 0.25); background: var(--bg-raised); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.project-meta-row { display: flex; align-items: center; gap: 0.75rem; font-family: var(--font-m); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber); margin-bottom: 1rem; }
.project-meta-sep { height: 1px; width: 2rem; background: oklch(0.28 0.09 255 / 0.35); }
.project-cat { color: var(--fg-muted); }
.project-title { font-family: var(--font-d); font-size: 1.6rem; margin-bottom: 0.75rem; }
.project-title a:hover { color: var(--amber); }
.project-desc { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.75; margin-bottom: 1.25rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.75rem; }
.project-metrics { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; border-top: 1px solid var(--border); padding-top: 1.5rem; margin-top: 0.5rem; }
@media(min-width:768px){ .project-metrics { grid-template-columns: repeat(4,1fr); } }
.metric-val { font-family: var(--font-d); font-size: 1.6rem; color: var(--amber); line-height: 1; }
.metric-label { font-family: var(--font-m); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); margin-top: 0.25rem; }
.project-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* ── PROJECT DETAIL ── */
.detail-metrics { display: grid; grid-template-columns: repeat(2,1fr); background: oklch(0.93 0.010 75 / 0.6); border-bottom: 1px solid var(--border); }
@media(min-width:768px){ .detail-metrics { grid-template-columns: repeat(4,1fr); } }
.detail-metric { padding: 1.75rem; border-right: 1px solid var(--border); transition: background 0.25s var(--ease); }
.detail-metric:hover { background: oklch(0.28 0.09 255 / 0.04); }
.detail-metric:last-child { border-right: none; }
.detail-metric-val { font-family: var(--font-d); font-size: 2.5rem; color: var(--amber); line-height: 1; }
.detail-two-col { display: grid; gap: 2.5rem; }
@media(min-width:1024px){ .detail-two-col { grid-template-columns: 4fr 8fr; } }
.method-grid { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-top: 2.5rem; }
@media(min-width:768px){ .method-grid { grid-template-columns: repeat(2,1fr); } }
@media(min-width:1024px){ .method-grid { grid-template-columns: repeat(3,1fr); } }
.method-card { background: var(--bg-surface); padding: 1.5rem; transition: background 0.25s var(--ease); }
.method-card:hover { background: var(--bg-raised); }
.method-num { font-family: var(--font-m); font-size: 0.68rem; color: var(--amber); margin-bottom: 0.5rem; }
.method-step { font-family: var(--font-d); font-size: 1.1rem; margin-bottom: 0.5rem; }
.method-detail { font-size: 0.83rem; color: var(--fg-muted); line-height: 1.7; }
.charts-grid { display: grid; gap: 1.5rem; margin-top: 2.5rem; }
@media(min-width:1024px){ .charts-grid { grid-template-columns: 1fr 1fr; } }
.chart-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease); }
.chart-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: oklch(0.28 0.09 255 / 0.2); }
.chart-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 1.5rem; }
.chart-title { font-family: var(--font-d); font-size: 1.15rem; }
.chart-subtitle { font-family: var(--font-m); font-size: 0.65rem; color: var(--fg-muted); }
.chart-container { height: 16rem; }
.chart-span-2 { grid-column: 1 / -1; }

/* Slider controls — binomial tree / Black-Scholes tools */
.slider-label { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.5rem; }
.slider-name { font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); }
.slider-val { font-family: var(--font-m); font-size: 0.85rem; color: var(--amber); }
.slider-unit { font-size: 0.65rem; color: var(--fg-muted); margin-left: 0.25rem; }
input[type=range] { width: 100%; accent-color: oklch(0.28 0.09 255); }
select.sc-select { width: 100%; border: 1px solid var(--border); background: var(--bg-surface); color: var(--fg); padding: 0.6rem 0.75rem; border-radius: var(--radius); font-size: 0.875rem; font-family: var(--font-s); margin-top: 0.5rem; transition: border-color 0.2s var(--ease); }
select.sc-select:focus { outline: none; border-color: var(--amber); }

/* ── ABOUT ── */
.timeline-item { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.75rem; box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease); }
.timeline-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: oklch(0.28 0.09 255 / 0.25); }
.timeline-header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 0.75rem; margin-bottom: 1.25rem; }
.timeline-role { font-family: var(--font-d); font-size: 1.25rem; }
.timeline-org { font-size: 0.875rem; color: var(--fg-muted); margin-top: 0.25rem; }
.timeline-period { font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber); }
.timeline-bullets { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.timeline-bullets li { display: flex; gap: 0.75rem; font-size: 0.875rem; color: var(--fg-muted); line-height: 1.6; }
.bullet-dot { width: 0.25rem; height: 0.25rem; border-radius: 9999px; background: var(--amber); margin-top: 0.6rem; flex-shrink: 0; }
.edu-grid { display: grid; gap: 1.5rem; }
@media(min-width:768px){ .edu-grid { grid-template-columns: 1fr 1fr; } }
.cred-grid { display: grid; gap: 1.5rem; }
@media(min-width:768px){ .cred-grid { grid-template-columns: repeat(3,1fr); } }

/* ── CONTACT ── */
.contact-grid { display: grid; gap: 2.5rem; }
@media(min-width:1024px){ .contact-grid { grid-template-columns: 5fr 7fr; } }
.contact-method { display: flex; align-items: center; gap: 0.75rem; font-size: 1rem; color: var(--fg); transition: color 0.2s var(--ease); }
.contact-method:hover { color: var(--amber); }
.contact-icon { width: 1.25rem; height: 1.25rem; color: var(--amber); flex-shrink: 0; }
.status-dot-wrap { display: flex; align-items: center; gap: 0.5rem; }
.ping-dot { position: relative; display: inline-flex; width: 0.625rem; height: 0.625rem; }
.ping-dot-inner { position: relative; display: inline-flex; width: 0.625rem; height: 0.625rem; border-radius: 9999px; background: var(--success); }
.ping-dot-outer { position: absolute; inset: 0; border-radius: 9999px; background: var(--success); opacity: 0.75; animation: ping 1.5s cubic-bezier(0,0,0.2,1) infinite; }
@keyframes ping { 0%{transform:scale(1);opacity:0.75;} 100%{transform:scale(2);opacity:0;} }
.form-field { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label { font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted); }
.form-required { color: var(--amber); }
.form-input, .form-select, .form-textarea {
  width: 100%; border: 1px solid var(--border); background: var(--bg-surface);
  color: var(--fg); padding: 0.65rem 0.8rem; border-radius: var(--radius);
  font-size: 0.875rem; font-family: var(--font-s);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px oklch(0.28 0.09 255 / 0.10); }
.form-grid { display: grid; gap: 1.25rem; }
@media(min-width:640px){ .form-grid { grid-template-columns: 1fr 1fr; } }
.form-span-2 { grid-column: 1 / -1; }

/* ── SERVICES ── */
.services-grid { display: grid; gap: 3rem; margin-top: 4rem; }
@media(min-width:1024px){ .services-grid { grid-template-columns: 1fr 1fr; } }
.service-section-title { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.service-section-title h2 { font-family: var(--font-d); font-size: 1.6rem; }
.service-cards { display: flex; flex-direction: column; gap: 1rem; }
.service-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-sm); transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease); }
.service-card:hover { border-color: oklch(0.28 0.09 255 / 0.25); background: var(--bg-raised); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.service-card-title { font-family: var(--font-d); font-size: 1.1rem; margin-bottom: 0.5rem; }
.service-card-body { font-size: 0.84rem; color: var(--fg-muted); line-height: 1.72; }

/* ── CTA BOX ── */
.cta-box { position: relative; overflow: hidden; background: var(--bg-raised); border: 1px solid var(--border); border-top: 2px solid oklch(0.28 0.09 255 / 0.22); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-lg); }
@media(min-width:768px){ .cta-box { padding: 4rem; } }
.cta-bg { position: absolute; inset: 0; opacity: 0.3; }
.cta-inner { position: relative; display: grid; gap: 2rem; }
@media(min-width:768px){ .cta-inner { grid-template-columns: 1fr auto; align-items: end; } }
.cta-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
@media(min-width:768px){ .cta-actions { justify-content: flex-end; } }

/* ── SECTION HEADER ── */
.section-header-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.5rem; margin-bottom: 3rem; }
.section-h2 { font-family: var(--font-d); font-size: clamp(2rem, 4vw, 3rem); margin-top: 0.5rem; }

/* ── PAGE LOAD ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
main { animation: fadeUp 0.35s var(--ease) both; }

/* ── REVEAL ANIMATIONS ── */
.reveal { opacity: 1; transform: none; transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.hidden { opacity: 0; transform: translateY(20px); }
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }

/* ── MOBILE ── */
@media(max-width:768px){
  .hero-inner { padding: 4rem 1.5rem 3rem; }
  .hero-h1 { font-size: 3rem; }
  .detail-metrics { grid-template-columns: 1fr 1fr; }
  .header-inner { padding: 1rem 1.25rem; }
}