:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #20252b;
  --muted: #5c6570;
  --line: #dce1e6;
  --link: #245b9e;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.8; }
h1, h2, h3, p, ul, dl { margin: 0; }
h1, h2, h3 { line-height: 1.3; }
a { color: var(--link); text-decoration: none; text-underline-offset: 5px; }
a:hover { text-decoration: underline; }
button { color: inherit; font: inherit; cursor: pointer; }
button:disabled { cursor: wait; opacity: .65; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 5px; border-radius: 2px; }
::selection { background: #dceafa; color: var(--ink); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; left: 20px; top: -100px; z-index: 10; padding: 8px 16px; background: var(--paper); border: 1px solid var(--link); }
.skip-link:focus { top: 10px; }
.section-shell, .nav-shell { width: min(1100px, calc(100% - 96px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; background: var(--paper); z-index: 5; border-bottom: 1px solid var(--line); }
.nav-shell { min-height: 90px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand { color: var(--ink); font-size: 19px; font-weight: 600; display: flex; align-items: baseline; gap: 16px; }
.brand span { font-size: 13px; font-weight: 400; color: var(--muted); }
#navigation { display: flex; gap: 32px; align-items: center; }
#navigation a { color: var(--muted); font-size: 15px; }
#navigation a[aria-current] { color: var(--link); text-decoration: underline; }
.menu-toggle { display: none; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 4px 12px; min-height: 44px; }
.hero { padding-block: 112px 100px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: center; }
h1 { font-size: clamp(48px, 5.5vw, 72px); font-weight: 600; letter-spacing: .035em; }
.hero-role { font-size: 23px; margin-top: 20px; font-weight: 500; }
.hero-school { color: var(--muted); font-size: 15px; margin-top: 8px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 9px 22px; border-radius: 4px; border: 1px solid var(--ink); font-size: 15px; }
.button-primary { color: var(--paper); background: var(--ink); }
.button-secondary { background: var(--paper); color: var(--ink); border-color: #acb4bd; }
.button:hover { text-decoration: none; border-color: var(--link); }
.button-primary:hover { background: var(--link); }
.hero-intro { color: #424a54; font-size: 17px; line-height: 1.95; }
.hero-intro p + p { margin-top: 20px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin-bottom: 46px; }
h2 { font-size: 28px; font-weight: 600; }
.section-heading > p { font-size: 14px; color: var(--muted); }
.work-section, .journey-section, .about-section { padding-top: 48px; padding-bottom: 60px; }
.work-section { border-top: 1px solid var(--line); }
.project, .experience { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 60px; }
.project + .project { margin-top: 58px; padding-top: 54px; border-top: 1px solid var(--line); }
.project-heading h3 { font-size: 34px; font-weight: 600; letter-spacing: -.02em; }
.project-heading > p { margin-top: 10px; font-size: 15px; }
.date { color: var(--muted); font-size: 14px !important; font-variant-numeric: tabular-nums; }
.project-heading .date { margin-top: 22px; }
.project-lead { font-size: 18px; font-weight: 500; margin-bottom: 18px; }
.project-points { padding-left: 20px; color: #424a54; }
.project-points li { padding-left: 4px; }
.project-points li + li { margin-top: 10px; }
.project-points li::marker { color: #88929d; }
.project-result { margin-top: 22px; }
strong { font-weight: 600; color: var(--ink); }
.evaluation-note { margin-top: 8px; font-size: 14px; color: var(--muted); }
.technology { font-size: 14px; color: var(--muted); margin-top: 22px; }
.project-actions { display: flex; gap: 28px; align-items: center; margin-top: 16px; font-size: 15px; }
.text-button { border: 0; padding: 8px 0; background: transparent; color: var(--link); min-height: 44px; }
.text-button:hover { text-decoration: underline; text-underline-offset: 5px; }
.text-button span { margin-left: 7px; }
.journey-section, .about-section { border-top: 1px solid var(--line); }
.experience-heading h3 { font-size: 25px; font-weight: 600; }
.experience-heading p { font-size: 15px; margin-top: 10px; }
.experience-heading .date { margin-top: 22px; }
.company-name { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 92px; }
.about-grid h3 { font-size: 19px; font-weight: 600; margin-bottom: 24px; }
.education-item + .education-item { margin-top: 22px; }
.education-name { font-weight: 500; }
.education-item .date { margin-top: 2px; }
.education-item p:not(.education-name), .award, .language-note { font-size: 15px; }
.award { margin-top: 24px; }
.language-note { color: var(--muted); margin-top: 4px; }
.skill-groups > div + div { margin-top: 18px; }
.skill-groups dt { font-size: 14px; color: var(--muted); }
.skill-groups dd { margin: 2px 0 0; font-size: 16px; }
.contact-section { border-top: 1px solid var(--line); padding-block: 58px 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 92px; }
.contact-section h2 { margin-bottom: 16px; }
.contact-section > div > p { color: var(--muted); font-size: 15px; }
.contact-email { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; align-content: start; padding-top: 4px; }
.email-address { font-size: clamp(18px, 2vw, 24px); letter-spacing: -.02em; }
.copy-feedback { flex-basis: 100%; min-height: 27px; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
.site-footer { padding-block: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); }
.site-footer a { color: var(--muted); }
.dialog-open { overflow: hidden; }
dialog { width: min(720px, calc(100% - 32px)); max-height: 85dvh; border: 1px solid var(--line); border-radius: 6px; padding: 0; color: var(--ink); background: var(--paper); }
dialog::backdrop { background: #20252b66; }
.dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 28px; border-bottom: 1px solid var(--line); font-size: 14px; position: sticky; top: 0; background: var(--paper); }
.close-button { background: transparent; padding: 6px 0 6px 16px; border: 0; min-height: 44px; }
.close-button span { font-size: 22px; margin-left: 8px; vertical-align: middle; }
.dialog-body { padding: 30px 32px; }
.dialog-body h2 { font-size: 32px; }
.dialog-subtitle { color: var(--muted); margin-top: 8px; }
.dialog-body h3 { font-size: 18px; margin-top: 28px; margin-bottom: 10px; }
.dialog-body p:not(.dialog-subtitle) { color: #424a54; }
.dialog-boundary { font-size: 14px; padding-top: 20px; margin-top: 28px; border-top: 1px solid var(--line); }
.dialog-body .button { margin-top: 24px; }
@media (max-width: 1024px) {
  .section-shell, .nav-shell { width: calc(100% - 64px); }
  .hero { gap: 40px; padding-block: 90px 80px; }
  .project, .experience { grid-template-columns: 230px minmax(0, 1fr); gap: 40px; }
  .about-grid, .contact-section { gap: 48px; }
}
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 64px 58px; }
  .hero-intro { max-width: 600px; }
  .project, .experience { grid-template-columns: 1fr; gap: 24px; }
  .project-heading .date, .experience-heading .date { margin-top: 8px; }
  .project-heading h3 { font-size: 30px; }
  .project + .project { margin-top: 40px; padding-top: 40px; }
  .work-section, .journey-section, .about-section { padding-block: 38px 44px; }
  .section-heading { margin-bottom: 32px; }
  .about-grid, .contact-section { grid-template-columns: 1fr; gap: 36px; }
  .contact-section { padding-block: 40px 26px; }
}
@media (max-width: 540px) {
  .section-shell, .nav-shell { width: calc(100% - 40px); }
  .nav-shell { min-height: 76px; gap: 14px; }
  .brand { font-size: 17px; gap: 10px; }
  .brand span { font-size: 12px; }
  .menu-toggle { display: block; }
  #navigation { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 18px 20px; background: var(--paper); border-bottom: 1px solid var(--line); gap: 26px; }
  #navigation.is-open { display: flex; }
  #navigation a { padding-block: 4px; }
  .hero { padding-block: 48px; gap: 30px; }
  .hero-role { font-size: 20px; margin-top: 16px; }
  .hero-school { font-size: 14px; }
  .hero-actions { margin-top: 26px; }
  .hero-intro { font-size: 16px; }
  h2 { font-size: 25px; }
  .section-heading { margin-bottom: 28px; }
  .project-heading > p, .experience-heading p { font-size: 14px; }
  .project-lead { font-size: 17px; }
  .project-actions { gap: 24px; }
  .dialog-header { padding: 10px 20px; }
  .dialog-body { padding: 22px; }
  .contact-email { gap: 4px 18px; }
}
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } }
@media print {
  :root { scroll-behavior: auto; }
  body { font-size: 10pt; }
  .site-header, .hero-actions, .project-actions, .text-button, .site-footer, dialog { display: none; }
  .section-shell { width: 100%; }
  .hero { padding-block: 0 24px; gap: 28px; }
  h1 { font-size: 32pt; }
  .work-section, .journey-section, .about-section, .contact-section { padding-block: 24px; }
  .project, .experience { grid-template-columns: 180px 1fr; gap: 24px; }
  .project + .project { margin-top: 24px; padding-top: 24px; }
  .project-heading, .section-heading { break-after: avoid; }
  li { break-inside: avoid; }
  @page { size: A4; margin: 16mm; }
}