:root {
  color-scheme: dark;
  --bg: #0c1110;
  --bg-soft: #111816;
  --panel: #151e1b;
  --panel-strong: #1b2521;
  --text: #f1f5ec;
  --muted: #a5b2a9;
  --faint: #94a59a;
  --line: #2b3832;
  --line-strong: #45554d;
  --accent: #c8f135;
  --accent-ink: #152000;
  --focus: #e3ff77;
  --radius: 14px;
  --rail: 80px;
  --section-pad: clamp(64px, 7vw, 112px);
  --content-pad: clamp(24px, 5vw, 80px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  font-family: "Avenir Next", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #edf1eb;
  --bg-soft: #e4eae3;
  --panel: #f7faf5;
  --panel-strong: #ffffff;
  --text: #15201b;
  --muted: #526159;
  --faint: #485950;
  --line: #c6d0c8;
  --line-strong: #9caba1;
  --accent: #4a6100;
  --accent-ink: #f7ffe0;
  --focus: #415700;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; scrollbar-color: var(--line-strong) var(--bg); }
body { min-width: 320px; margin: 0; background: var(--bg); color: var(--text); font-family: inherit; text-rendering: optimizeLegibility; }
::selection { background: var(--accent); color: var(--accent-ink); }
button, a { font: inherit; -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-underline-offset: 5px; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; }
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; min-width: 0; }
h1, h2, h3, h4 { text-wrap: balance; }
p { text-wrap: pretty; }
.heading-line, .role-line { display: block; }
.heading-line { white-space: nowrap; }
code { color: var(--accent); font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; }
.skip-link { position: fixed; top: 12px; left: 96px; z-index: 100; transform: translateY(-180%); padding: 14px 18px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-weight: 750; text-decoration: none; }
.skip-link:focus { transform: none; }
.site-rail { position: fixed; inset: 0 auto 0 0; z-index: 20; width: var(--rail); border-right: 1px solid var(--line); background: var(--bg); display: flex; flex-direction: column; align-items: center; padding: 24px 0; }
.monogram { width: 44px; height: 44px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-size: 14px; font-weight: 850; letter-spacing: -0.02em; text-decoration: none; }
.site-rail nav { margin: auto 0; display: grid; gap: 20px; }
.site-rail nav a { color: var(--faint); min-width: 44px; min-height: 60px; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; text-decoration: none; writing-mode: vertical-rl; transition: color 180ms ease; }
.site-rail nav a:hover, .site-rail nav a[aria-current] { color: var(--accent); }
.theme-toggle { width: 44px; min-height: 88px; padding: 12px 8px; border: 1px solid var(--line-strong); border-radius: 10px; background: transparent; color: var(--muted); font-size: 12px; font-weight: 700; writing-mode: vertical-rl; transition: border-color 180ms ease; }
.theme-toggle:hover { border-color: var(--accent); }
main { margin-left: var(--rail); }
.hero { min-height: min(900px, 100dvh); display: grid; grid-template-columns: minmax(360px, 0.95fr) minmax(500px, 1.05fr); }
.hero-copy { min-width: 0; padding: clamp(56px, 6vw, 96px) var(--content-pad); border-right: 1px solid var(--line); display: flex; flex-direction: column; justify-content: center; }
.availability { margin: 0 0 30px; color: var(--muted); font-size: 14px; line-height: 1.5; }
.hero h1 { margin: 0; font-size: clamp(70px, 6.2vw, 96px); font-weight: 760; letter-spacing: -0.035em; line-height: 1; }
.hero h1 span { display: block; white-space: nowrap; }
.person-name small { display: block; margin-top: 14px; color: var(--muted); font-size: 22px; font-weight: 550; letter-spacing: 0.02em; }
.hero-role { margin: 32px 0 0; color: var(--accent); font-size: clamp(23px, 2vw, 30px); font-weight: 720; letter-spacing: -0.02em; line-height: 1.45; }
.role-line { white-space: nowrap; }
.role-line i { color: var(--faint); font-style: normal; font-weight: 450; }
.hero-education { margin: 18px 0 0; color: var(--text); font-size: 14px; line-height: 1.7; }
.hero-summary { max-width: 38em; margin: 24px 0 0; color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-actions, .project-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: 30px; }
.button { min-height: 48px; padding: 0 18px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; font-size: 14px; font-weight: 750; text-decoration: none; white-space: nowrap; transition: background 180ms ease, border-color 180ms ease; }
.button-primary { background: var(--accent); color: var(--accent-ink); }
.button-primary:hover { background: color-mix(in srgb, var(--accent) 85%, var(--text)); }
.button-secondary { border: 1px solid var(--line-strong); color: var(--text); }
.button-secondary:hover { border-color: var(--accent); }
.hero-facts { margin: 0; padding-top: 42px; display: grid; grid-template-columns: 1fr; gap: 18px; }
.hero-facts div { padding-top: 12px; border-top: 1px solid var(--line); display: flex; gap: 18px; align-items: baseline; }
.hero-facts dt { min-width: 60px; color: var(--faint); font-size: 12px; }
.hero-facts dd { margin: 0; min-width: 0; font-size: 14px; line-height: 1.5; overflow-wrap: anywhere; }
.hero-facts a { text-decoration-color: var(--line-strong); }
.hero-facts a:hover { color: var(--accent); }
.dependency-panel { min-width: 0; padding: 28px; display: flex; flex-direction: column; background: var(--bg-soft); }
.panel-heading { display: flex; justify-content: space-between; gap: 18px; align-items: baseline; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin: 0; font-size: 18px; font-weight: 600; letter-spacing: -0.02em; }
.panel-status { color: var(--faint); font-size: 12px; white-space: nowrap; }
.dependency-map { position: relative; min-height: 560px; flex: 1; margin: 20px 0; overflow: hidden; border-radius: var(--radius); background: radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 36%), var(--panel); }
.map-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-lines path { fill: none; stroke: var(--line-strong); stroke-width: 1.3; vector-effect: non-scaling-stroke; transition: stroke 220ms ease, opacity 220ms ease; }
.dependency-map.has-active .map-lines path { opacity: 0.3; }
.dependency-map.has-active .map-lines path.is-active { opacity: 1; stroke: var(--accent); stroke-width: 2; }
.map-core, .map-skill, .map-project { position: absolute; z-index: 2; border-radius: 12px; transition: border-color 180ms ease, background 180ms ease; }
.map-core { top: 50%; left: 50%; width: 144px; min-height: 112px; transform: translate(-50%, -50%); padding: 16px; background: var(--accent); color: var(--accent-ink); display: flex; flex-direction: column; justify-content: space-between; gap: 12px; }
.map-core span { font-size: 12px; font-weight: 750; }
.map-core strong { font-size: 17px; line-height: 1.2; }
.map-skill { width: 140px; padding: 12px; border: 1px solid var(--line-strong); background: var(--panel-strong); }
.map-skill b, .map-skill span { display: block; }
.map-skill b { font-size: 14px; font-weight: 650; white-space: nowrap; }
.map-skill span { margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.45; }
.skill-python { top: 27%; left: 15%; }
.skill-java { top: 27%; right: 15%; }
.skill-javascript { left: 15%; bottom: 25%; }
.skill-go { right: 15%; bottom: 25%; }
.map-project { width: 144px; min-height: 92px; padding: 14px; border: 1px solid var(--line); background: var(--panel-strong); color: var(--text); display: flex; flex-direction: column; justify-content: space-between; gap: 10px; text-decoration: none; }
.map-project small { color: var(--faint); font-size: 12px; line-height: 1.3; }
.map-project strong { font-size: 17px; line-height: 1.15; }
.map-project:focus-visible, .map-project.is-active, .map-skill.is-active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--panel-strong)); }
.project-cra { top: 5%; left: 4%; }
.project-csts { top: 5%; right: 4%; }
.project-bargain { bottom: 4%; left: 4%; }
.project-reasonix { right: 4%; bottom: 4%; }
.map-instruction { margin: 0; color: var(--faint); font-size: 12px; line-height: 1.6; }
.section-shell { padding: var(--section-pad) var(--content-pad); border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 24px; margin-bottom: 54px; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 4vw, 60px); font-weight: 650; line-height: 1.2; letter-spacing: -0.035em; }
.section-heading > span { color: var(--faint); font-size: 14px; line-height: 1.6; }
.aurora-feature { scroll-margin-top: 28px; }
.aurora-intro { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(32px, 7vw, 100px); align-items: start; margin-bottom: 36px; }
.aurora-intro h3 { margin: 0 0 12px; font-size: clamp(40px, 4.5vw, 68px); font-weight: 600; letter-spacing: -0.025em; line-height: 1.1; }
.project-subtitle { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.7; }
.aurora-summary > p { margin: 0; max-width: 65ch; color: var(--muted); font-size: 16px; line-height: 1.8; }
.aurora-summary .project-actions { margin-top: 22px; gap: 24px; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 12px; font-size: 14px; font-weight: 650; }
.text-link span { color: var(--accent); }
.aurora-cover { width: 100%; }
.image-trigger { display: block; position: relative; width: 100%; margin: 0; padding: 0; border: 0; border-radius: var(--radius); background: transparent; text-align: inherit; color: inherit; }
.image-trigger img { width: 100%; height: auto; border-radius: var(--radius); }
.image-hint { position: absolute; bottom: 16px; right: 16px; padding: 8px 12px; border-radius: 8px; background: #15201b; color: #f1f5ec; font-size: 12px; line-height: 1.4; transition: background 180ms ease; }
.image-trigger:hover .image-hint { background: #34473c; }
figcaption { margin-top: 12px; color: var(--faint); font-size: 12px; line-height: 1.7; }
.aurora-scenes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; align-items: start; }
.aurora-engineering { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(32px, 6vw, 88px); padding: 40px 0; margin-top: 36px; border-top: 1px solid var(--line-strong); }
.aurora-stack h4 { margin: 0 0 18px; font-size: 22px; font-weight: 650; }
.aurora-stack p { margin: 0; color: var(--muted); font-size: 15px; line-height: 2; }
.engineering-notes { margin: 0; }
.engineering-notes div { display: grid; grid-template-columns: 100px 1fr; gap: 24px; margin-bottom: 22px; }
.engineering-notes div:last-child { margin-bottom: 0; }
.engineering-notes dt { color: var(--text); font-size: 14px; line-height: 1.8; font-weight: 650; }
.engineering-notes dd { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.demo-note { padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.demo-note summary { width: fit-content; min-height: 44px; display: list-item; padding: 10px 0; color: var(--faint); font-size: 13px; cursor: pointer; }
.demo-note p { max-width: 75ch; margin: 10px 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.project-list { margin-top: 48px; }
.project-row { padding: 36px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: minmax(230px, 0.9fr) minmax(320px, 1.4fr) auto; gap: clamp(24px, 4vw, 60px); align-items: start; scroll-margin-top: 28px; }
.project-title h3 { max-width: 12ch; margin: 0; font-size: clamp(28px, 2.7vw, 42px); line-height: 1.15; letter-spacing: -0.03em; font-weight: 650; }
.project-title p { margin: 14px 0 0; color: var(--faint); font-size: 13px; line-height: 1.7; }
.project-detail > p { max-width: 65ch; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.project-detail ul { margin: 22px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 14px; list-style: none; }
.project-detail li { color: var(--faint); font-size: 12px; line-height: 1.7; }
.project-link { min-height: 44px; display: inline-flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.project-link span, .story-links span { color: var(--accent); }
.project-link:hover { color: var(--accent); }
.evidence { background: var(--bg-soft); }
.reasonix-story { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(380px, 1fr); gap: clamp(36px, 7vw, 100px); align-items: center; scroll-margin-top: 28px; }
.reasonix-copy h3, .award-copy h3 { margin: 0 0 24px; font-size: clamp(30px, 3vw, 46px); line-height: 1.3; letter-spacing: -0.03em; font-weight: 650; }
.reasonix-copy > p, .award-copy > p { max-width: 65ch; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.85; }
.story-links { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px 24px; }
.story-links a { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.contributor-proof { width: 100%; }
.pr-timeline { margin-top: 48px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); }
.pr-timeline article { padding: 24px; border-right: 1px solid var(--line); }
.pr-timeline article:first-child { padding-left: 0; }
.pr-timeline article:last-child { padding-right: 0; border-right: 0; }
.pr-timeline a { display: inline-flex; align-items: center; min-height: 44px; color: var(--accent); font-size: 12px; font-weight: 650; }
.pr-timeline h4 { margin: 18px 0 14px; font-size: 22px; font-weight: 650; line-height: 1.35; letter-spacing: -0.025em; }
.pr-timeline p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.award-story { margin-top: 64px; padding-top: 64px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(300px, 0.9fr) minmax(400px, 1.1fr); gap: clamp(36px, 7vw, 100px); align-items: center; }
.award-meta { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 20px; color: var(--faint); font-size: 12px; line-height: 1.7; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-strong); }
.capability-grid article { min-width: 0; padding: 28px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.capability-grid article:first-child { padding-left: 0; }
.capability-grid article:last-child { border-right: 0; padding-right: 0; }
.capability-grid h3 { margin: 0 0 18px; font-size: 22px; font-weight: 650; line-height: 1.3; letter-spacing: -0.02em; }
.capability-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.capability-grid a { margin-top: auto; padding-top: 24px; min-height: 44px; color: var(--faint); font-size: 12px; line-height: 1.8; }
.capability-grid a:hover { color: var(--accent); }
.learning-strip { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line-strong); display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.learning-strip p { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 650; }
.learning-strip h3 { margin: 0; color: var(--muted); font-size: 18px; font-weight: 500; line-height: 1.7; }
.learning-boundary { display: block; margin-top: 12px; color: var(--faint); font-size: 12px; line-height: 1.7; }
.contact { padding-bottom: 32px; background: var(--accent); color: var(--accent-ink); display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: start; }
.contact-copy h2 { margin: 0 0 24px; font-size: clamp(38px, 4vw, 60px); font-weight: 650; line-height: 1.2; letter-spacing: -0.035em; }
.contact-copy > p { max-width: 32em; margin: 0; font-size: 15px; line-height: 1.8; }
.contact-actions { display: grid; border-top: 1px solid color-mix(in srgb, var(--accent-ink) 45%, transparent); }
.contact-actions a { min-width: 0; padding: 24px 0; border-bottom: 1px solid color-mix(in srgb, var(--accent-ink) 45%, transparent); display: grid; grid-template-columns: 64px 1fr auto; gap: 18px; align-items: center; text-decoration: none; }
.contact-actions span { font-size: 13px; font-weight: 600; }
.contact-actions strong { min-width: 0; overflow-wrap: anywhere; font-size: clamp(18px, 1.65vw, 26px); font-weight: 650; letter-spacing: -0.02em; }
.contact-actions b { font-size: 22px; font-weight: 500; }
.footer-line { grid-column: 1 / -1; padding-top: 24px; border-top: 1px solid color-mix(in srgb, var(--accent-ink) 45%, transparent); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; font-size: 12px; line-height: 1.8; }
.public-security-record { color: inherit; text-decoration-thickness: 1px; }
.image-viewer { position: fixed; inset: 24px; width: calc(100% - 48px); max-width: 1600px; max-height: calc(100dvh - 48px); padding: 20px; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--bg); color: var(--text); }
.image-viewer::backdrop { background: rgb(0 0 0 / 0.85); }
.image-viewer-bar { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 16px; }
.image-viewer-bar p { margin: 0; font-size: 15px; line-height: 1.6; }
.image-viewer-close { flex-shrink: 0; min-height: 44px; padding: 10px 16px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--panel); color: var(--text); font-size: 14px; }
.image-viewer-close span { margin-left: 12px; font-size: 20px; }
.image-viewer-controls { display: flex; gap: 10px; flex-shrink: 0; }
.image-viewer-body { overflow: auto; max-height: calc(100dvh - 180px); }
.image-viewer-body img { width: 100%; height: auto; }
.image-viewer.is-original-size .image-viewer-body img { width: auto; max-width: none; }
.image-viewer-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
@media (hover: hover) {
  .map-project:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--panel-strong)); }
}
@media (prefers-reduced-motion: no-preference) {
  .map-lines path { stroke-dasharray: 6 8; animation: map-flow 12s linear infinite; }
  @keyframes map-flow { to { stroke-dashoffset: -56; } }
}
@media (max-width: 1200px) {
  .hero { grid-template-columns: minmax(330px, 1fr) minmax(450px, 1fr); }
  .hero-copy { padding-left: 36px; padding-right: 36px; }
  .hero h1 { font-size: 76px; }
  .dependency-panel { padding: 22px; }
  .map-skill { width: 124px; }
  .skill-python, .skill-javascript { left: 10%; }
  .skill-java, .skill-go { right: 10%; }
  .project-row { grid-template-columns: minmax(200px, 0.8fr) minmax(0, 1.2fr); }
  .project-link { grid-column: 2; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .capability-grid article:nth-child(2) { padding-right: 0; border-right: 0; }
  .capability-grid article:nth-child(3) { padding-left: 0; }
  .contact { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 960px) {
  :root { --rail: 0px; --content-pad: 32px; }
  html { scroll-padding-top: 88px; }
  .site-rail { inset: 0 0 auto; width: auto; height: 68px; padding: 0 20px; border-right: 0; border-bottom: 1px solid var(--line); flex-direction: row; justify-content: space-between; }
  .monogram { width: 40px; height: 40px; font-size: 13px; }
  .site-rail nav { margin: 0; display: flex; gap: 8px; }
  .site-rail nav a { min-height: 44px; padding: 0 8px; writing-mode: initial; }
  .theme-toggle { width: auto; min-height: 44px; padding: 8px 12px; writing-mode: initial; }
  .hero { padding-top: 68px; min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { padding: 56px var(--content-pad); border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-facts { grid-template-columns: 1fr 1.3fr; gap: 28px; }
  .hero-facts div { display: block; }
  .hero-facts dt { margin-bottom: 8px; }
  .dependency-panel { padding: 24px var(--content-pad); }
  .dependency-map { display: grid; grid-template-columns: 1fr 1.1fr; gap: 0; min-height: 0; padding: 16px 24px; overflow: visible; background: var(--panel); }
  .map-lines { display: none; }
  .map-core, .map-skill, .map-project { position: static; width: auto; min-height: 0; transform: none; border-radius: 0; }
  .map-core { grid-column: 1 / -1; grid-row: 1; flex-direction: row; align-items: center; padding: 16px 0 20px; background: transparent; color: var(--accent); border-bottom: 1px solid var(--line-strong); }
  .map-core strong { font-size: 14px; }
  .map-core br { display: none; }
  .map-skill { padding: 20px 12px 20px 8px; border: 0; border-bottom: 1px solid var(--line); background: transparent; }
  .map-project { padding: 20px 0 20px 28px; border: 0; border-bottom: 1px solid var(--line); background: transparent; justify-content: center; gap: 6px; }
  .map-project::before { content: ""; position: absolute; width: 18px; height: 1px; left: 0; top: 50%; background: var(--accent); }
  .map-project { position: relative; }
  .map-project strong { font-size: 16px; }
  .map-project br { display: none; }
  .skill-python { grid-column: 1; grid-row: 2; }
  .project-cra { grid-column: 2; grid-row: 2; }
  .skill-java { grid-column: 1; grid-row: 3; }
  .project-csts { grid-column: 2; grid-row: 3; }
  .skill-javascript { grid-column: 1; grid-row: 4; }
  .project-bargain { grid-column: 2; grid-row: 4; }
  .skill-go { grid-column: 1; grid-row: 5; border-bottom: 0; }
  .project-reasonix { grid-column: 2; grid-row: 5; border-bottom: 0; }
  .map-skill.is-active, .map-project.is-active { background: transparent; }
  .aurora-intro, .aurora-engineering { grid-template-columns: 1fr; gap: 28px; }
  .reasonix-story, .award-story { grid-template-columns: 1fr; gap: 32px; }
  .contributor-proof { max-width: 650px; }
  .pr-timeline { grid-template-columns: 1fr 1fr; }
  .pr-timeline article:nth-child(2n) { padding-right: 0; border-right: 0; }
  .pr-timeline article:nth-child(3) { padding-left: 0; }
  .pr-timeline article:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .learning-strip { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 600px) {
  :root { --content-pad: 22px; --section-pad: 64px; }
  .site-rail { padding: 0 12px; height: 64px; }
  .site-rail nav { gap: 0; }
  .site-rail nav a { padding: 0 6px; font-size: 12px; }
  .theme-toggle { font-size: 11px; padding: 8px; }
  .hero { padding-top: 64px; }
  .hero-copy { padding-top: 48px; padding-bottom: 42px; }
  .availability { margin-bottom: 24px; font-size: 13px; }
  .hero h1 { font-size: clamp(64px, 18vw, 80px); }
  .hero-role { font-size: 24px; margin-top: 28px; }
  .hero-education { font-size: 13px; }
  .hero-summary { font-size: 15px; }
  .hero-actions { gap: 10px; }
  .button { font-size: 13px; gap: 20px; }
  .hero-facts { grid-template-columns: 1fr; padding-top: 32px; gap: 14px; }
  .hero-facts div { display: flex; }
  .hero-facts dt { margin-bottom: 0; }
  .hero-facts dd { font-size: 13px; }
  .dependency-panel { padding-top: 24px; }
  .panel-heading { gap: 12px; }
  .panel-heading h2 { font-size: 16px; }
  .panel-status { font-size: 11px; }
  .dependency-map { padding: 10px 16px; }
  .map-skill span { font-size: 11px; max-width: 120px; }
  .map-core strong { font-size: 12px; }
  .map-project strong { font-size: 14px; }
  .map-project small { font-size: 11px; }
  .section-heading { margin-bottom: 32px; gap: 12px; }
  .section-heading h2 { font-size: 36px; }
  .section-heading > span { font-size: 13px; }
  .aurora-intro h3 { font-size: 44px; }
  .project-subtitle { font-size: 16px; }
  .aurora-summary > p { font-size: 15px; }
  .aurora-scenes { grid-template-columns: 1fr; margin-top: 24px; gap: 24px; }
  .image-hint { bottom: 10px; right: 10px; font-size: 11px; padding: 7px 9px; }
  .aurora-engineering { padding: 28px 0; margin-top: 28px; }
  .engineering-notes div { grid-template-columns: 1fr; gap: 8px; }
  .project-list { margin-top: 24px; }
  .project-row { grid-template-columns: 1fr; gap: 20px; padding: 30px 0; }
  .project-title h3 { font-size: 30px; max-width: 100%; }
  .project-title p { margin-top: 8px; }
  .project-link { grid-column: auto; width: fit-content; }
  .reasonix-copy h3, .award-copy h3 { font-size: 30px; }
  .pr-timeline { grid-template-columns: 1fr; margin-top: 32px; }
  .pr-timeline article, .pr-timeline article:first-child, .pr-timeline article:last-child { padding: 20px 0; border-right: 0; }
  .pr-timeline article + article { border-top: 1px solid var(--line); }
  .pr-timeline h4 { margin-top: 12px; font-size: 22px; }
  .award-story { margin-top: 40px; padding-top: 40px; }
  .award-meta { flex-wrap: wrap; gap: 8px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid article, .capability-grid article:first-child, .capability-grid article:last-child { padding: 24px 0; border-right: 0; }
  .capability-grid a { margin-top: 0; padding-top: 14px; }
  .contact { gap: 28px; }
  .contact-copy h2 { font-size: 36px; }
  .contact-actions a { grid-template-columns: 1fr auto; gap: 10px; }
  .contact-actions span { grid-column: 1 / -1; }
  .contact-actions strong { font-size: 17px; }
  .footer-line { flex-direction: column; }
  .image-viewer { inset: 8px; width: calc(100% - 16px); max-height: calc(100dvh - 16px); padding: 14px; }
  .image-viewer-bar { gap: 12px; }
  .image-viewer-controls { gap: 6px; }
  .image-viewer-bar p { font-size: 13px; }
  .image-viewer-close { padding: 8px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .map-lines path { animation: none; }
  button, a, .map-lines path { transition: none; }
}