/* ============================================================
   about.css — personal introduction page (v13)
   ============================================================ */

.about-page { background: var(--bg); }
:root{--ab-serif:"Noto Serif SC","Songti SC","SimSun",serif}
.ab-hero { padding: 132px 0 90px; border-bottom: 1px solid var(--line); }
.ab-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 72px; align-items: end; }
.ab-kicker { font-family: var(--mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-fg); }
.ab-name {
  margin: 24px 0 0; font-family: Archivo, sans-serif;
  font-size: clamp(58px, 10vw, 148px); line-height: .9; letter-spacing: -.05em;
}
.ab-name em { font-style: normal; color: var(--accent); }
.ab-role { margin: 22px 0 0; font-size: 15px; letter-spacing: .04em; color: var(--muted-fg); }
.ab-intro { margin: 30px 0 0; max-width: 36em; font-size: 17px; line-height: 2; text-wrap: pretty; }
.ab-portrait { position: relative; justify-self: end; width: min(100%, 300px); }
.ab-portrait img { width: 100%; display: block; border: 1px solid var(--line); background: #fff; }
.ab-portrait figcaption {
  margin-top: 10px; font-family: var(--mono); font-size: 10px; letter-spacing: .16em;
  color: var(--muted-fg); text-transform: uppercase; display: flex; justify-content: space-between;
}

.ab-sec { padding: 96px 0; border-top: 1px solid var(--line); }
.ab-sec:first-of-type { border-top: 0; }
.ab-head { display: grid; grid-template-columns: 70px 1fr auto; gap: 20px; align-items: baseline; margin-bottom: 46px; }
.ab-head .n { font-family: var(--mono); font-size: 12px; letter-spacing: .2em; color: var(--accent); }
.ab-head h2 { margin: 0; font-family: var(--ab-serif); font-size: clamp(26px, 3vw, 38px); letter-spacing: .05em; font-weight: 600; }
.ab-head .s { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--muted-fg); text-transform: uppercase; }

.ab-now { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.ab-now > div { padding: 26px 26px 26px 0; border-bottom: 1px solid var(--line); }
.ab-now > div + div { padding-left: 26px; border-left: 1px solid var(--line); }
.ab-now dt { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted-fg); }
.ab-now dd { margin: 10px 0 0; font-size: 15px; line-height: 1.8; }
.ab-now dd b { font-weight: 600; }

.ab-timeline { position: relative; margin: 0; padding: 0; list-style: none; }
.ab-timeline::before { content: ""; position: absolute; left: 92px; top: 6px; bottom: 6px; width: 1px; background: var(--line); }
.ab-timeline li { display: grid; grid-template-columns: 92px 1fr; gap: 34px; padding: 22px 0; position: relative; }
.ab-timeline li::before {
  content: ""; position: absolute; left: 87px; top: 32px; width: 9px; height: 9px;
  background: var(--bg); border: 1px solid var(--fg); border-radius: 50%;
}
.ab-timeline time { font-family: var(--mono); font-size: 12px; letter-spacing: .1em; color: var(--muted-fg); padding-top: 3px; }
.ab-timeline h3 { margin: 0; font-size: 17px; font-weight: 600; letter-spacing: .02em; }
.ab-timeline h3 span { font-weight: 400; color: var(--muted-fg); font-size: 13px; margin-left: 10px; }
.ab-timeline p { margin: 8px 0 0; font-size: 13.5px; line-height: 1.95; color: var(--muted-fg); max-width: 46em; }

.ab-skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ab-skill { border-top: 1px solid var(--line); padding-top: 18px; }
.ab-skill h3 { margin: 0 0 12px; font-family: var(--mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted-fg); }
.ab-skill ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 7px; }
.ab-skill li { border: 1px solid var(--line); padding: 5px 10px; font-size: 12.5px; }

.ab-quote {
  margin: 0; padding: 46px 0 10px; max-width: 46em;
  font-family: var(--ab-serif); font-size: clamp(22px, 2.6vw, 32px); line-height: 1.8;
}
.ab-quote small { display: block; margin-top: 16px; font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--muted-fg); text-transform: uppercase; }

.ab-contact { display: flex; justify-content: space-between; align-items: end; gap: 30px; flex-wrap: wrap; padding-bottom: 24px; }
.ab-contact .mail { font-size: clamp(24px, 4.2vw, 54px); font-family: Archivo, sans-serif; letter-spacing: -.03em; }
.ab-contact .mail:hover { color: var(--accent); }
.ab-contact p { margin: 12px 0 0; font-size: 13px; color: var(--muted-fg); }

@media (max-width: 900px) {
  .ab-grid { grid-template-columns: 1fr; gap: 40px; }
  .ab-portrait { justify-self: start; width: 220px; }
  .ab-now { grid-template-columns: 1fr; }
  .ab-now > div + div { padding-left: 0; border-left: 0; }
  .ab-skills { grid-template-columns: 1fr 1fr; }
  .ab-head { grid-template-columns: 46px 1fr; }
  .ab-head .s { display: none; }
}
@media (max-width: 600px) {
  .ab-hero { padding: 110px 0 60px; }
  .ab-sec { padding: 66px 0; }
  .ab-timeline::before { left: 6px; }
  .ab-timeline li { grid-template-columns: 1fr; gap: 6px; padding-left: 26px; }
  .ab-timeline li::before { left: 1px; top: 27px; }
  .ab-skills { grid-template-columns: 1fr; }
  .ab-contact .mail { font-size: 22px; }
}