:root {
  color-scheme: light;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --ink-faint: #6e6e73;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --green: #248a3d;
  --canvas: #f5f5f7;
  --surface: #ffffff;
  --surface-soft: rgba(255, 255, 255, .72);
  --line: rgba(0, 0, 0, .1);
  --line-light: rgba(255, 255, 255, .18);
  --dark: #101010;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
  --data: "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  --max: 1180px;
  --header-height: 52px;
  --radius-large: 32px;
  --radius-medium: 22px;
  --radius-small: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 32px); }
body { margin: 0; color: var(--ink); background: var(--canvas); font-family: var(--body); line-height: 1.5; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
img, svg { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dl, dd { margin: 0; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 999; top: 10px; left: 12px; padding: 9px 15px; color: #fff; background: var(--blue); border-radius: 999px; transform: translateY(-160%); transition: transform .2s ease; }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid rgba(0, 113, 227, .55); outline-offset: 3px; }
.section-shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.section-block { padding-top: 140px; padding-bottom: 140px; }

.site-header { position: sticky; z-index: 100; top: 0; height: var(--header-height); border-bottom: 1px solid var(--line); background: rgba(250, 250, 252, .8); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); }
.nav-shell { width: min(calc(100% - 48px), var(--max)); height: 100%; margin: auto; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 9px; margin-right: auto; line-height: 1.05; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; color: #fff; background: var(--ink); border-radius: 8px; font-size: 14px; font-weight: 650; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 13px; font-weight: 600; letter-spacing: .02em; }
.brand small { margin-top: 3px; color: var(--ink-soft); font-size: 9px; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a { color: var(--ink-soft); font-size: 12px; transition: color .2s ease; }
.site-nav a:hover, .site-nav a.is-active { color: var(--ink); }
.nav-resume { min-height: 32px; padding: 6px 13px; display: inline-flex; align-items: center; color: #fff; background: var(--blue); border-radius: 999px; font-size: 11px; transition: background .2s ease, transform .2s ease; }
.nav-resume:hover { background: var(--blue-hover); transform: translateY(-1px); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; }
.menu-toggle > span:not(.sr-only) { display: block; width: 20px; height: 1px; margin: 6px auto; background: var(--ink); transition: transform .25s ease; }

.hero { min-height: calc(100svh - var(--header-height)); padding-top: clamp(80px, 11vw, 150px); padding-bottom: 96px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(370px, .8fr); align-items: center; gap: clamp(48px, 8vw, 112px); }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-size: 13px; font-weight: 600; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #34c759; box-shadow: 0 0 0 4px rgba(52, 199, 89, .12); }
.site-motto { margin-top: 26px; color: var(--ink-faint); font-size: 14px; font-weight: 500; }
.hero h1 { max-width: 780px; margin-top: 14px; font-family: var(--display); font-size: clamp(54px, 7vw, 88px); font-weight: 700; line-height: 1.02; letter-spacing: -.055em; }
.hero h1 span { display: block; color: var(--ink-faint); }
.hero-lead { max-width: 670px; margin-top: 28px; color: var(--ink-soft); font-size: clamp(17px, 1.6vw, 21px); line-height: 1.65; letter-spacing: -.01em; }
.hero-actions { margin-top: 34px; display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.button { min-height: 46px; padding: 10px 21px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 0; border-radius: 999px; font-size: 14px; font-weight: 500; transition: background .2s ease, color .2s ease, transform .2s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { color: #fff; background: var(--blue); }
.button-primary:hover { background: var(--blue-hover); }
.button-secondary { background: rgba(0, 0, 0, .06); }
.button-secondary:hover { background: rgba(0, 0, 0, .1); }
.text-link { margin-left: 7px; color: var(--blue); font-size: 14px; }
.text-link::after { content: " ↗"; }
.text-link:hover { text-decoration: underline; }
.hero-tags { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags li { padding: 7px 12px; color: var(--ink-soft); background: rgba(0, 0, 0, .045); border-radius: 999px; font-size: 12px; }

.ops-ticket { position: relative; padding: 28px; color: var(--ink); background: var(--surface-soft); border: 1px solid rgba(255, 255, 255, .9); border-radius: var(--radius-large); box-shadow: 0 20px 60px rgba(0, 0, 0, .09); backdrop-filter: blur(20px); overflow: hidden; }
.ops-ticket::before { content: ""; position: absolute; width: 240px; height: 240px; right: -110px; top: -120px; border-radius: 50%; background: radial-gradient(circle, rgba(0, 113, 227, .16), rgba(0, 113, 227, 0) 70%); }
.ticket-head { position: relative; display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--ink-faint); font-family: var(--data); font-size: 9px; letter-spacing: .08em; }
.ticket-route { height: 76px; display: flex; align-items: center; position: relative; }
.ticket-route span { position: absolute; right: 5px; left: 5px; height: 2px; background: linear-gradient(90deg, #34c759, var(--blue)); }
.ticket-route i, .ticket-route b { z-index: 1; width: 9px; height: 9px; margin-right: auto; border: 2px solid #fff; border-radius: 50%; background: #34c759; box-shadow: 0 0 0 1px #34c759; }
.ticket-route b { width: 14px; height: 14px; margin-right: 0; background: var(--blue); box-shadow: 0 0 0 1px var(--blue); }
.ticket-caption { padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; }
.ticket-metrics { display: grid; grid-template-columns: 1fr 1fr; }
.ticket-metrics div { padding: 22px 0; border-bottom: 1px solid var(--line); }
.ticket-metrics div:nth-child(odd) { border-right: 1px solid var(--line); }
.ticket-metrics div:nth-child(even) { padding-left: 22px; }
.ticket-metrics dt { color: var(--ink-faint); font-size: 11px; }
.ticket-metrics dd { margin-top: 7px; font-family: var(--display); font-size: 28px; font-weight: 650; letter-spacing: -.03em; line-height: 1; }
.ticket-metrics dd small { margin-left: 4px; color: var(--blue); font-size: 10px; font-weight: 500; }
.ticket-foot { padding-top: 18px; display: flex; justify-content: space-between; color: var(--ink-soft); font-size: 10px; }
.ticket-foot i { color: var(--blue); font-style: normal; }

.section-heading { max-width: 800px; margin-bottom: 64px; }
.eyebrow { margin-bottom: 12px; color: var(--blue); font-size: 14px; font-weight: 600; }
.section-heading h2, .contact h2 { font-family: var(--display); font-size: clamp(38px, 5.2vw, 64px); font-weight: 700; line-height: 1.08; letter-spacing: -.045em; }
.section-heading-light h2 { color: #fff; }
.section-heading-light .eyebrow { color: #66aaff; }
.heading-split { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.heading-split > p { flex: 0 0 auto; color: var(--ink-faint); font-size: 12px; }
.about-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(48px, 9vw, 140px); }
.about-statement { font-size: clamp(25px, 3.1vw, 38px); font-weight: 600; line-height: 1.42; letter-spacing: -.035em; }
.method-list { padding: 6px 22px; background: var(--surface); border-radius: var(--radius-medium); }
.method-list p { display: grid; grid-template-columns: 38px 1fr; padding: 18px 0; border-bottom: 1px solid var(--line); }
.method-list p:last-child { border-bottom: 0; }
.method-list span { grid-row: span 2; color: var(--blue); font-family: var(--data); font-size: 10px; }
.method-list strong { font-size: 15px; }
.method-list small { margin-top: 3px; color: var(--ink-soft); font-size: 12px; }

.results { background: var(--dark); }
.result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.result-grid article { min-height: 220px; padding: 28px; color: #fff; background: #1c1c1e; border-radius: var(--radius-medium); }
.result-feature { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; background: linear-gradient(145deg, #0878e8, #004fb7) !important; }
.result-feature > p, .result-item > span { color: rgba(255, 255, 255, .62); font-size: 11px; font-weight: 600; }
.result-feature > strong { margin: 40px 0 10px; font-size: clamp(56px, 7vw, 96px); font-weight: 700; line-height: 1; letter-spacing: -.06em; }
.result-feature > strong small { margin-left: 6px; font-size: 14px; font-weight: 500; letter-spacing: 0; }
.result-feature h3 { margin-bottom: 36px; font-size: 22px; font-weight: 500; }
.result-pair { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-light); }
.result-pair span { padding-top: 20px; font-size: 15px; }
.result-pair span + span { padding-left: 22px; border-left: 1px solid var(--line-light); }
.result-pair b { font-size: 26px; font-weight: 600; }
.result-pair small { display: block; margin-top: 6px; color: rgba(255,255,255,.6); font-size: 10px; }
.result-item { display: flex; flex-direction: column; }
.result-item strong { margin: auto 0 14px; font-size: clamp(40px, 4.5vw, 60px); font-weight: 650; line-height: 1; letter-spacing: -.04em; }
.result-item strong small { margin-left: 4px; font-size: 11px; font-weight: 500; }
.result-item p { color: rgba(255,255,255,.55); font-size: 12px; line-height: 1.6; }

.timeline { display: grid; gap: 14px; }
.experience-item { display: grid; grid-template-columns: 180px 1fr; background: var(--surface); border-radius: var(--radius-medium); overflow: hidden; }
.experience-date { padding: 30px; display: flex; gap: 7px; color: var(--ink-faint); font-family: var(--data); font-size: 10px; }
.experience-main { padding: 28px 30px; border-left: 1px solid var(--line); }
.experience-head { display: flex; align-items: start; justify-content: space-between; gap: 30px; }
.experience-head p { margin-bottom: 5px; color: var(--blue); font-size: 11px; font-weight: 600; }
.experience-head h3 { font-size: 22px; font-weight: 650; letter-spacing: -.02em; }
.experience-head div > span { color: var(--ink-soft); font-size: 12px; }
.expand-button { flex: 0 0 auto; min-width: 44px; min-height: 44px; padding: 8px 4px 8px 12px; border: 0; color: var(--blue); background: transparent; cursor: pointer; font-size: 12px; }
.expand-button i { position: relative; display: inline-block; width: 11px; height: 11px; margin-left: 7px; }
.expand-button i::before, .expand-button i::after { content: ""; position: absolute; top: 5px; left: 0; width: 11px; height: 1px; background: currentColor; }
.expand-button i::after { transform: rotate(90deg); transition: transform .2s ease; }
.expand-button[aria-expanded="true"] i::after { transform: rotate(0); }
.experience-summary { margin-top: 18px; display: grid; gap: 7px; color: var(--ink-soft); font-size: 14px; }
.experience-summary li, .experience-details li { position: relative; padding-left: 16px; }
.experience-summary li::before, .experience-details li::before { content: ""; position: absolute; top: .65em; left: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); }
.experience-details { overflow: hidden; }
.experience-details ul { margin-top: 15px; padding: 17px 20px; display: grid; gap: 8px; color: var(--ink-soft); background: var(--canvas); border-radius: var(--radius-small); font-size: 13px; }

.cases { background: var(--surface); }
.case-list { display: grid; gap: 18px; }
.case-card { padding: 34px; display: grid; grid-template-columns: 92px 1fr 1.55fr; gap: 30px; background: var(--canvas); border-radius: var(--radius-large); transition: transform .25s ease, box-shadow .25s ease; }
.case-card:hover { transform: translateY(-3px); box-shadow: 0 18px 45px rgba(0,0,0,.07); }
.case-index { color: var(--ink-faint); font-family: var(--data); font-size: 10px; }
.case-title p { color: var(--blue); font-size: 11px; font-weight: 600; }
.case-title h3 { margin-top: 9px; font-size: 22px; line-height: 1.35; letter-spacing: -.02em; }
.case-flow { display: grid; grid-template-columns: repeat(3, 1fr); }
.case-flow div { padding: 0 18px; border-left: 1px solid var(--line); }
.case-flow span { font-size: 11px; font-weight: 600; }
.case-flow p { margin-top: 9px; color: var(--ink-soft); font-size: 12px; line-height: 1.65; }
.case-flow strong { color: var(--blue); }

.skill-matrix { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.skill-matrix article { min-height: 250px; padding: 32px; background: var(--surface); border-radius: var(--radius-medium); }
.skill-matrix article > span { color: var(--blue); font-size: 11px; font-weight: 600; }
.skill-matrix h3 { margin-top: 44px; font-size: 26px; letter-spacing: -.025em; }
.skill-matrix p { max-width: 480px; margin-top: 12px; color: var(--ink-soft); font-size: 13px; line-height: 1.7; }
.skill-matrix .skill-wide { grid-column: span 2; min-height: 220px; display: grid; grid-template-columns: 150px 1fr 1.4fr; align-items: start; gap: 25px; color: #fff; background: linear-gradient(135deg, #202024, #0d0d0f); }
.skill-wide h3 { margin: 0; }
.skill-wide p { margin: 0; color: rgba(255,255,255,.62); }
.skill-wide ul { grid-column: 2 / -1; display: flex; flex-wrap: wrap; gap: 8px; }
.skill-wide li { padding: 6px 11px; color: #fff; background: rgba(255,255,255,.1); border-radius: 999px; font-size: 10px; }

.credentials { color: #fff; background: var(--dark); }
.credential-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 32px 90px; }
.credential-layout .section-heading { grid-row: span 2; margin: 0; }
.education-list { display: grid; gap: 12px; }
.education-list article { padding: 22px; display: grid; grid-template-columns: 150px 1fr; background: #1c1c1e; border-radius: var(--radius-small); }
.education-list time { color: rgba(255,255,255,.55); font-family: var(--data); font-size: 10px; }
.education-list h3 { font-size: 20px; }
.education-list p { margin-top: 4px; color: rgba(255,255,255,.58); font-size: 12px; }
.certificate-list { display: flex; flex-wrap: wrap; gap: 8px; }
.certificate-list li { padding: 8px 13px; color: rgba(255,255,255,.8); background: #1c1c1e; border-radius: 999px; font-size: 11px; }

.contact { padding-top: 140px; padding-bottom: 90px; }
.contact-panel { padding: clamp(34px, 6vw, 72px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 9vw, 130px); background: var(--surface); border-radius: var(--radius-large); }
.contact-panel > div:first-child > p:last-child { max-width: 520px; margin-top: 24px; color: var(--ink-soft); font-size: 14px; }
.contact-actions { border-top: 1px solid var(--line); }
.contact-row { width: 100%; min-height: 84px; padding: 18px 4px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 0; border-bottom: 1px solid var(--line); background: transparent; cursor: pointer; text-align: left; }
.contact-row:hover b { color: var(--blue); transform: translateX(3px); }
.contact-row small { display: block; margin-bottom: 3px; color: var(--ink-faint); font-size: 10px; }
.contact-row b { flex: 0 0 auto; color: var(--blue); font-size: 11px; transition: transform .2s ease; }
.site-footer { padding-top: 26px; padding-bottom: 34px; display: grid; grid-template-columns: 1fr 1.5fr 1fr; align-items: center; gap: 30px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 11px; }
.site-footer > div { display: flex; gap: 12px; }
.site-footer > div:last-child { justify-content: flex-end; }
.site-footer p { text-align: center; font-size: 12px; }
.toast { position: fixed; z-index: 300; right: 24px; bottom: 24px; padding: 11px 17px; color: #fff; background: rgba(29,29,31,.92); border-radius: 999px; box-shadow: 0 10px 35px rgba(0,0,0,.18); font-size: 13px; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s ease, transform .2s ease; backdrop-filter: blur(16px); }
.toast.is-visible { opacity: 1; transform: translateY(0); }

.privacy-page { min-height: 100vh; padding: 90px 24px; }
.privacy-document { max-width: 760px; margin: auto; padding: clamp(28px, 6vw, 64px); background: var(--surface); border-radius: var(--radius-large); }
.privacy-back { display: inline-block; margin-bottom: 38px; color: var(--blue); font-size: 13px; }
.privacy-document h1 { font-size: clamp(42px, 7vw, 66px); letter-spacing: -.05em; }
.privacy-document .updated { margin-top: 10px; color: var(--ink-soft); font-size: 12px; }
.privacy-document section { margin-top: 40px; }
.privacy-document h2 { margin-bottom: 10px; font-size: 22px; }
.privacy-document p, .privacy-document li { color: var(--ink-soft); font-size: 14px; line-height: 1.7; }
.privacy-document ul { padding-left: 1.2em; list-style: disc; }

@media (max-width: 980px) {
  .site-nav { gap: 15px; }
  .site-nav a { font-size: 11px; }
  .nav-resume { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { max-width: 820px; }
  .ops-ticket { max-width: 650px; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .case-card { grid-template-columns: 76px 1fr; }
  .case-flow { grid-column: 2; }
  .credential-layout { gap: 32px 48px; }
  .contact-panel { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root { --header-height: 48px; --radius-large: 24px; --radius-medium: 18px; }
  .section-shell, .nav-shell { width: min(calc(100% - 32px), var(--max)); }
  .section-block { padding-top: 96px; padding-bottom: 96px; }
  .site-header { background: rgba(250,250,252,.88); }
  .brand-mark { width: 26px; height: 26px; }
  .menu-toggle { display: block; }
  .menu-toggle[aria-expanded="true"] > span:not(.sr-only):nth-of-type(2) { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:not(.sr-only):nth-of-type(3) { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav { position: fixed; inset: var(--header-height) 0 auto; padding: 14px 16px 24px; display: grid; gap: 0; background: rgba(250,250,252,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(24px); transform: translateY(-130%); opacity: 0; visibility: hidden; transition: transform .25s ease, opacity .25s ease, visibility .25s ease; }
  .site-nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .site-nav a { min-height: 46px; padding: 13px 8px; border-bottom: 1px solid var(--line); font-size: 15px; }
  .hero { min-height: 0; padding-top: 68px; padding-bottom: 88px; gap: 54px; }
  .hero h1 { font-size: clamp(50px, 15vw, 68px); }
  .hero-lead { font-size: 17px; }
  .hero-actions { align-items: stretch; }
  .button { flex: 1; min-height: 48px; }
  .text-link { width: 100%; margin: 10px 0 0; }
  .ops-ticket { padding: 23px; }
  .about-layout { grid-template-columns: 1fr; gap: 44px; }
  .result-grid { grid-template-columns: 1fr; }
  .result-feature { grid-column: auto; grid-row: auto; min-height: 440px !important; }
  .result-grid article { min-height: 190px; }
  .heading-split { display: block; }
  .heading-split > p { margin-top: 16px; }
  .experience-item { grid-template-columns: 1fr; }
  .experience-date { padding: 24px 24px 0; }
  .experience-main { padding: 14px 24px 25px; border-left: 0; }
  .experience-head { gap: 12px; }
  .experience-head h3 { font-size: 20px; }
  .expand-button span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .expand-button { width: 44px; padding: 0; }
  .case-card { padding: 25px 22px; grid-template-columns: 1fr; gap: 12px; }
  .case-flow { grid-column: 1; grid-template-columns: 1fr; }
  .case-flow div { padding: 16px 0; border-left: 0; border-top: 1px solid var(--line); }
  .skill-matrix { grid-template-columns: 1fr; }
  .skill-matrix .skill-wide { grid-column: auto; grid-template-columns: 1fr; }
  .skill-wide ul { grid-column: auto; }
  .credential-layout { grid-template-columns: 1fr; }
  .credential-layout .section-heading { grid-row: auto; }
  .education-list article { grid-template-columns: 1fr; gap: 8px; }
  .contact { padding-top: 96px; }
  .contact-panel { width: calc(100% + 32px); margin-left: -16px; border-radius: 0; }
  .contact-row { font-size: 13px; }
  .site-footer { grid-template-columns: 1fr; text-align: center; }
  .site-footer > div, .site-footer > div:last-child { justify-content: center; flex-wrap: wrap; }
}

@media (prefers-contrast: more) {
  :root { --ink-soft: #444446; --ink-faint: #555558; --line: rgba(0,0,0,.28); }
  .button-secondary, .hero-tags li { border: 1px solid currentColor; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}