:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-2: #eef3f9;
  --text: #0f1f3a;
  --muted: #4a5b74;
  --subtle: #5a6a80;
  --navy: #0f2a4a;
  --accent: #1a5fd0;
  --accent-hover: #144ba6;
  --accent-soft: #e6effc;
  --on-accent: #ffffff;
  --cyan: #0e7490;
  --cyan-soft: #e3f4f8;
  --mark: #fff3c4;
  --line: #dbe3ee;
  --line-strong: #c3cfdf;
  --shadow-sm: 0 1px 2px rgba(15, 31, 58, .05);
  --shadow: 0 1px 2px rgba(15, 31, 58, .05), 0 10px 28px rgba(15, 31, 58, .07);
  --radius: 14px;
  --radius-sm: 10px;
  --font: Outfit, "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --header-h: 64px;
  --max: 1160px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1424;
  --surface: #111d33;
  --surface-2: #15233d;
  --text: #e6edf7;
  --muted: #a7b6cc;
  --subtle: #8394ad;
  --navy: #e6edf7;
  --accent: #6ea8ff;
  --accent-hover: #93bfff;
  --accent-soft: #172b4d;
  --on-accent: #0b1424;
  --cyan: #5fd4e8;
  --cyan-soft: #0f2c38;
  --mark: #3a3314;
  --line: #22324f;
  --line-strong: #2f4266;
  --shadow-sm: none;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0; color: var(--text); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
code {
  font-family: var(--mono); font-size: .86em;
  background: var(--surface-2); border: 1px solid var(--line);
  padding: .05em .35em; border-radius: 6px;
}
mark { background: var(--mark); color: inherit; padding: 0 .15em; border-radius: 3px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--accent); color: var(--on-accent); padding: 10px 14px; border-radius: 8px;
  font-weight: 600; text-decoration: none; transition: top .15s;
}
.skip-link:focus { top: 12px; color: var(--on-accent); }

.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico {
  width: 18px; height: 18px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}

.container { width: min(var(--max), 100% - 48px); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }
.header-inner {
  width: min(var(--max), 100% - 48px); margin-inline: auto; height: var(--header-h);
  display: flex; align-items: center; gap: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 600; }
.brand:hover { color: var(--text); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--navy); color: var(--bg); font-size: .82rem; font-weight: 700; letter-spacing: .02em;
}
.brand-name { white-space: nowrap; }
.nav { margin-left: auto; }
.nav-list { list-style: none; display: flex; gap: 2px; }
.nav-list a {
  display: block; padding: 8px 12px; border-radius: 8px;
  color: var(--muted); text-decoration: none; font-size: .95rem; font-weight: 500;
  transition: color .15s, background-color .15s;
}
.nav-list a:hover { color: var(--text); background: var(--surface-2); }
.nav-list a.active { color: var(--accent); background: var(--accent-soft); }
.header-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: transparent; border: 1px solid var(--line); color: var(--text); cursor: pointer;
  transition: background-color .15s, border-color .15s;
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--line-strong); }
.icon-btn .ico { width: 19px; height: 19px; }
.ico-moon, :root[data-theme="dark"] .ico-sun { display: none; }
:root[data-theme="dark"] .ico-moon { display: block; }
.menu-btn { display: none; }
.menu-btn .ico-close { display: none; }
.menu-btn[aria-expanded="true"] .ico-open { display: none; }
.menu-btn[aria-expanded="true"] .ico-close { display: block; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px; border-radius: 10px;
  font: 600 .95rem/1.2 var(--font); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background-color .15s, border-color .15s, color .15s, transform .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: var(--surface); border-color: var(--line-strong); color: var(--text); }
.btn-sm { min-height: 40px; padding: 8px 14px; font-size: .9rem; }
.btn .ico { width: 17px; height: 17px; }

.text-link {
  display: inline-flex; align-items: center; gap: 5px; min-height: 32px;
  font-weight: 600; font-size: .92rem; text-decoration: none; color: var(--accent);
}
.text-link .ico { width: 15px; height: 15px; transition: transform .15s; }
.text-link:hover .ico { transform: translateX(3px); }

/* Hero */
.hero {
  padding: 48px 0 32px;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 44px 44px;
  background-color: var(--bg);
  position: relative;
  overflow: hidden;
  overflow: clip;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, var(--bg) 92%), radial-gradient(ellipse at 20% 40%, var(--bg) 20%, transparent 70%);
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); color: var(--muted); font-size: .85rem; font-weight: 500;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #16a34a; box-shadow: 0 0 0 3px color-mix(in srgb, #16a34a 20%, transparent); }
.hero h1 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); letter-spacing: -.025em; margin: 18px 0 10px; }
.wave { display: inline-block; transform-origin: 70% 70%; animation: wave 2.4s ease-in-out 1s 2; }
@keyframes wave { 0%, 60%, 100% { transform: rotate(0); } 20% { transform: rotate(14deg); } 40% { transform: rotate(-6deg); } }
.role {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem); font-weight: 600; color: var(--accent);
}
.role-arrow { width: 22px; height: 22px; color: var(--cyan); }
.tagline { margin-top: 14px; font-size: 1.12rem; color: var(--text); font-weight: 500; max-width: 34rem; }
.lede { margin-top: 10px; color: var(--muted); max-width: 36rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tech-line {
  list-style: none; display: flex; flex-wrap: wrap; gap: 6px 0; margin-top: 26px;
  font-family: var(--mono); font-size: .82rem; color: var(--subtle);
}
.tech-line li:not(:last-child)::after { content: "•"; margin: 0 10px; color: var(--line-strong); }

.hero-visual { display: flex; justify-content: center; }
.portrait-frame { position: relative; width: min(400px, 100%); aspect-ratio: 1; }
.portrait {
  position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover;
  border-radius: 24px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow);
}
.orbit {
  position: absolute; inset: -22px; width: calc(100% + 44px); height: calc(100% + 44px);
  fill: none; stroke: var(--line-strong); stroke-width: .3; stroke-dasharray: 1.2 1.6;
  animation: spin 90s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.terminal-chip {
  position: absolute; z-index: 2; left: -18px; bottom: 22px;
  font-family: var(--mono); font-size: .78rem; color: #d7e3f4;
  background: #0f1f3a; border: 1px solid #22324f; border-radius: 8px; padding: 7px 11px;
  box-shadow: var(--shadow); white-space: nowrap;
}
.terminal-chip span { color: #5fd4e8; margin-right: 4px; }

/* Sections */
.section { padding: 88px 0; scroll-margin-top: var(--header-h); }
.hero { scroll-margin-top: var(--header-h); }
.section-tint { background: var(--surface-2); border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 40px; }
.kicker {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan);
}
.kicker-num {
  display: inline-grid; place-items: center; min-width: 30px; height: 30px; padding: 0 6px;
  border-radius: 9px; background: linear-gradient(135deg, var(--accent), var(--cyan));
  color: var(--on-accent); font-family: var(--mono); font-size: .76rem; letter-spacing: 0;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 28%, transparent);
}
.kicker::after {
  content: ""; flex: 0 1 96px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  transform-origin: left; transition: transform .7s ease .15s;
}
.js .kicker.reveal::after { transform: scaleX(0); }
.js .kicker.reveal.in::after { transform: scaleX(1); }
.section-head h2, .contact-copy h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); letter-spacing: -.02em; }
.section-sub { margin-top: 12px; color: var(--muted); font-size: 1.05rem; }

/* About */
.about-grid { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 40px; align-items: start; }
.about-photo {
  width: 200px; height: 200px; object-fit: cover; object-position: center 20%;
  border-radius: 20px; border: 1px solid var(--line); box-shadow: var(--shadow);
}
.about-copy { display: grid; gap: 14px; font-size: 1.08rem; max-width: 46rem; }
.about-copy p:last-child { color: var(--text); }
.pillars { list-style: none; margin-top: 44px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.pillar {
  display: grid; gap: 4px; padding: 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: border-color .2s, transform .2s;
}
.pillar:hover { border-color: var(--accent); transform: translateY(-2px); }
.pillar .ico { width: 24px; height: 24px; color: var(--accent); margin-bottom: 8px; }
.pillar strong { font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text); }
.pillar span { color: var(--muted); }

/* FDE flow */
.flow { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; counter-reset: step; }
.flow-step {
  position: relative; padding: 22px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; right: -24px; width: 20px; height: 2px;
  background: linear-gradient(90deg, var(--line-strong) 50%, transparent 0) 0 0 / 6px 2px;
}
.flow-step:not(:last-child)::before {
  content: ""; position: absolute; top: calc(50% - 4px); right: -26px; width: 8px; height: 8px;
  border-top: 2px solid var(--line-strong); border-right: 2px solid var(--line-strong); transform: rotate(45deg);
}
.flow-num { font-family: var(--mono); font-size: .8rem; color: var(--cyan); font-weight: 600; }
.flow-step .ico { position: absolute; top: 20px; right: 20px; width: 22px; height: 22px; color: var(--accent); }
.flow-step h3 { margin: 10px 0 8px; font-size: 1.05rem; letter-spacing: .1em; text-transform: uppercase; }
.flow-step p { color: var(--muted); font-size: .96rem; }
.flow-step .flow-tag { margin-bottom: 6px; font-family: var(--mono); font-size: .8rem; color: var(--accent); font-weight: 600; }
.flow-outcome {
  margin-top: 28px; display: flex; align-items: center; gap: 10px; color: var(--muted);
}
.flow-outcome .ico { color: var(--cyan); }
.flow-outcome strong { color: var(--text); text-transform: uppercase; letter-spacing: .08em; font-size: .9rem; }

/* Experience */
.timeline { list-style: none; position: relative; display: grid; gap: 22px; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.job { position: relative; }
.job::before {
  content: ""; position: absolute; left: -28px; top: 26px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--surface); border: 3px solid var(--accent);
}
.job article {
  padding: 24px 26px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.job-head { display: flex; justify-content: space-between; gap: 8px 20px; flex-wrap: wrap; align-items: baseline; }
.job-head h3 { font-size: 1.2rem; }
.job-org { color: var(--muted); font-weight: 500; margin-top: 2px; }
.job-when { font-family: var(--mono); font-size: .85rem; color: var(--subtle); white-space: nowrap; }
.job-now {
  display: inline-block; margin-right: 6px; padding: 2px 8px; border-radius: 999px;
  background: var(--cyan-soft); color: var(--cyan); font-family: var(--font); font-size: .72rem; font-weight: 600; letter-spacing: .04em;
}
.job-focus {
  margin-top: 8px; font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan);
}
.job-summary { margin-top: 12px; color: var(--text); }
.job-tech { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; padding-top: 14px; border-top: 1px dashed var(--line); }
.job-tech li {
  font-family: var(--mono); font-size: .76rem; padding: 3px 9px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
}
.metrics { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0 4px; }
.metrics li {
  display: flex; align-items: baseline; gap: 10px; padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}
.metrics strong { font-size: 1.5rem; line-height: 1; color: var(--accent); letter-spacing: -.02em; }
.metrics span { color: var(--text); font-size: .9rem; }
.job-points { list-style: none; display: grid; gap: 10px; margin-top: 16px; }
.job-points li { position: relative; padding-left: 20px; color: var(--muted); }
.job-points li::before {
  content: ""; position: absolute; left: 2px; top: .62em; width: 7px; height: 7px; border-radius: 2px;
  background: var(--cyan); opacity: .8;
}
.more { margin-top: 14px; }
.more summary {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer; list-style: none;
  font-weight: 600; font-size: .92rem; color: var(--accent); padding: 6px 0; min-height: 44px;
}
.more summary::-webkit-details-marker { display: none; }
.more summary::after {
  content: ""; width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform .2s;
}
.more[open] summary::after { transform: rotate(-135deg) translate(-2px, 0); }
.more .job-points { margin-top: 6px; }

/* Projects */
.featured {
  border-radius: 20px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 32px; margin-bottom: 28px;
}
.badge {
  display: inline-block; font-family: var(--mono); font-size: .75rem; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--cyan); background: var(--cyan-soft); padding: 5px 10px; border-radius: 6px;
}
.featured-head h3 { font-size: clamp(1.35rem, 2.6vw, 1.7rem); margin-top: 14px; }
.featured-sub { color: var(--muted); margin-top: 8px; max-width: 48rem; }
.featured-body { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 32px; margin-top: 26px; }
.facts { display: grid; gap: 16px; margin: 0; }
.facts dt { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text); }
.facts dd { margin: 4px 0 0; color: var(--muted); }
.facts dd .tags { margin-top: 6px; }
.project .more { margin-top: 4px; }
.project .more .project-qa { margin-top: 4px; }
.ticks { list-style: none; display: grid; gap: 7px; margin-top: 4px; }
.ticks li { position: relative; padding-left: 22px; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: .45em; width: 10px; height: 6px;
  border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg);
}
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 20px; }
.tags li {
  font-size: .8rem; font-weight: 500; padding: 3px 10px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
}
.link-row { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin-top: 20px; }

.arch {
  margin: 0; padding: 20px; border-radius: var(--radius); align-self: start;
  background: #0f1f3a; border: 1px solid #22324f; color: #d7e3f4;
}
.arch-title {
  display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: .8rem;
  color: #8fa6c6; margin-bottom: 16px; text-transform: uppercase; letter-spacing: .08em;
}
.arch-title .ico { color: #5fd4e8; width: 16px; height: 16px; }
.arch-flow { list-style: none; display: grid; gap: 22px; }
.arch-node {
  position: relative; padding: 12px 14px; border-radius: 10px;
  background: #15294a; border: 1px solid #2a4570;
}
.arch-node:not(:last-child)::after {
  content: ""; position: absolute; left: 50%; bottom: -21px; width: 2px; height: 20px;
  background: linear-gradient(#3b5b8c 50%, transparent 0) 0 0 / 2px 6px;
}
.arch-node:not(:last-child)::before {
  content: ""; position: absolute; left: calc(50% - 4px); bottom: -22px; width: 6px; height: 6px;
  border-right: 2px solid #5fd4e8; border-bottom: 2px solid #5fd4e8; transform: rotate(45deg); z-index: 1;
}
.arch-layer { display: block; font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: #5fd4e8; }
.arch-node strong { display: block; font-size: .95rem; color: #f1f6fd; margin-top: 2px; }
.arch-node small { display: block; font-size: .8rem; color: #9fb3cf; margin-top: 2px; }
.arch-node code { background: #0f1f3a; border-color: #2a4570; color: #f1f6fd; }

.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.project-grid-compact { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 16px; }
.project {
  display: flex; flex-direction: column; padding: 24px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.project:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow); }
.project-kind { font-family: var(--mono); font-size: .75rem; color: var(--cyan); text-transform: uppercase; letter-spacing: .06em; }
.project h3, .project h4 { font-size: 1.15rem; margin: 8px 0 12px; }
.project > p:not(.project-kind) { color: var(--muted); }
.project-qa { display: grid; gap: 10px; margin: 0; }
.project-qa dt { font-size: .74rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text); }
.project-qa dd { margin: 2px 0 0; color: var(--muted); font-size: .95rem; }
.project .tags { margin-top: auto; padding-top: 18px; }
.project .link-row { margin-top: 16px; }

.more-projects { margin-top: 20px; }
.lab {
  margin-top: 40px; padding: 28px; border-radius: 20px;
  border: 1px dashed var(--line-strong); background: color-mix(in srgb, var(--surface) 55%, transparent);
}
.lab-head { display: flex; gap: 14px; align-items: flex-start; }
.lab-head .ico { width: 28px; height: 28px; color: var(--cyan); margin-top: 2px; }
.lab-head h3 { font-size: 1.2rem; }
.lab-head p { color: var(--muted); margin-top: 4px; }

/* Skills */
.skill-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.skill-group {
  padding: 22px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.skill-group h3 {
  display: flex; align-items: center; gap: 10px; font-size: .88rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 16px;
}
.skill-group h3 .ico { color: var(--accent); width: 20px; height: 20px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: .88rem; padding: 5px 11px; border-radius: 8px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
}
.chips li:not(.key) { font-size: .82rem; padding: 4px 10px; border-style: dashed; }
.chips li.key, .legend-chip.key {
  background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--text); font-weight: 600; border-style: solid;
}
.skill-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; color: var(--muted); font-size: .9rem; }
.legend-chip {
  font-size: .8rem; padding: 3px 10px; border-radius: 8px; color: var(--muted);
  background: var(--surface-2); border: 1px dashed var(--line);
}
.legend-chip:not(:first-child) { margin-left: 10px; }

/* Credentials */
.cred-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.cred-block {
  padding: 24px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.cred-block h3 {
  display: flex; align-items: center; gap: 10px; font-size: .88rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px;
}
.cred-block h3 .ico { color: var(--accent); width: 20px; height: 20px; }
.cert-list, .practice { list-style: none; display: grid; gap: 0; }
.cert-list li, .practice li { padding: 14px 0; border-top: 1px solid var(--line); }
.cert-list li:first-child, .practice li:first-child { border-top: 0; padding-top: 0; }
.cert-list li { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.cert-list strong, .practice strong, .edu strong { display: block; color: var(--text); }
.cert-list span, .edu > span { color: var(--muted); font-size: .92rem; }
.practice-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.stat { color: var(--muted); margin-top: 4px; }
.stat b { color: var(--text); font-size: 1.1rem; }
.stat-split { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.stat-split span {
  font-size: .8rem; padding: 2px 9px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
}
.edu { display: grid; gap: 2px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.contact-mail { margin-top: 22px; color: var(--muted); }
.form {
  display: grid; gap: 16px; padding: 28px; border-radius: 18px;
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
}
.form h3 { font-size: 1.15rem; }
.form-hint { color: var(--muted); font-size: .9rem; margin-top: -10px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: .92rem; }
.field input, .field textarea {
  width: 100%; font: 1rem/1.5 var(--font); color: var(--text);
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: 10px; padding: 11px 13px;
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input::placeholder, .field textarea::placeholder { color: var(--subtle); }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.field [aria-invalid="true"] { border-color: #c2410c; }
.field-err { color: #b42318; font-size: .86rem; }
:root[data-theme="dark"] .field-err { color: #fca5a5; }
:root[data-theme="dark"] .field [aria-invalid="true"] { border-color: #f87171; }
.form .btn { justify-self: start; }
.form-status { font-size: .92rem; min-height: 1.4em; }
.form-status.ok { color: #15803d; }
.form-status.err { color: #b42318; }
:root[data-theme="dark"] .form-status.ok { color: #86efac; }
:root[data-theme="dark"] .form-status.err { color: #fca5a5; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 44px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px 32px; }
.footer-name { font-weight: 600; }
.footer-tag { color: var(--muted); font-size: .92rem; }
.footer-links { list-style: none; display: flex; gap: 20px; }
.footer-links a { color: var(--muted); text-decoration: none; font-weight: 500; }
.footer-links a:hover { color: var(--accent); }
.footer-note { width: 100%; color: var(--subtle); font-size: .88rem; }

/* Reveal */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1100px) {
  .nav-list a { padding: 8px 9px; font-size: .92rem; }
  .brand-name { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
}
@media (max-width: 1024px) {
  .hero-inner { gap: 36px; }
  .featured-body { grid-template-columns: 1fr; }
  .arch { max-width: 560px; }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .skill-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-step:nth-child(2)::after, .flow-step:nth-child(2)::before { display: none; }
  .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .menu-btn { display: grid; }
  .brand-name { position: static; width: auto; height: auto; overflow: visible; clip: auto; }
  .nav { position: static; margin-left: auto; }
  .nav-list {
    position: absolute; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; gap: 2px; padding: 10px 16px 16px;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    display: none;
  }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 12px 14px; font-size: 1rem; }
  .header-actions { margin-left: 0; }

  .hero { padding: 28px 0 24px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .portrait-frame { width: min(280px, 70vw); }
  .terminal-chip { left: 50%; transform: translateX(-50%); bottom: -14px; font-size: .72rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 28px; }
  .about-grid { grid-template-columns: 1fr; gap: 22px; }
  .about-photo { width: 140px; height: 140px; }
  .project-grid, .project-grid-compact, .skill-groups, .cred-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; gap: 26px; }
  .flow-step:not(:last-child)::after {
    display: block; top: auto; bottom: -22px; right: auto; left: 34px; width: 2px; height: 18px;
    background: linear-gradient(var(--line-strong) 50%, transparent 0) 0 0 / 2px 6px;
  }
  .flow-step:not(:last-child)::before {
    display: block; top: auto; bottom: -24px; right: auto; left: 31px; transform: rotate(135deg);
  }
  .featured { padding: 22px; }
  .lab { padding: 20px; }
  .job article { padding: 20px; }
}
@media (max-width: 480px) {
  .container, .header-inner { width: calc(100% - 32px); }
  .brand-name { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .pillars { grid-template-columns: 1fr 1fr; gap: 10px; }
  .pillar { padding: 16px; }
  .cta-row .btn { flex: 1 1 calc(50% - 10px); }
  .timeline { padding-left: 22px; }
  .job::before { left: -22px; }
  .timeline::before { left: 5px; }
  .metrics li { flex: 1 1 100%; }
  .cert-list li { flex-direction: column; align-items: flex-start; gap: 6px; }
  .form { padding: 20px; }
  .form .btn { justify-self: stretch; }
}

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

@media print {
  .site-header, .skip-link, .form, .hero-visual, .orbit, .terminal-chip, .cta-row { display: none !important; }
  body { background: #fff; color: #000; }
  .section, .hero { padding: 20px 0; }
  .section-tint { background: none; border: 0; }
  .js .reveal { opacity: 1; transform: none; }
  .js .kicker.reveal::after { transform: none; transition: none; }
  details.more > *:not(summary) { display: block; }
}