.portfolio-page { background: #fff; }
.portfolio-shell { width: min(1060px, calc(100% - 64px)); margin: 0 auto; padding: 48px 0 64px; }
.portfolio-intro { margin-bottom: 44px; }
.portfolio-intro h1 { font-size: 42px; line-height: 1.2; letter-spacing: -.03em; }
.portfolio-intro p { margin-top: 12px; color: var(--muted); font-size: 15px; }
.portfolio-project { padding: 34px 0 46px; border-top: 1px solid var(--line); scroll-margin-top: 90px; }
.portfolio-project-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.portfolio-project h2 { font-size: 28px; line-height: 1.4; }
.portfolio-project h2 small { color: var(--muted); font-size: 17px; font-weight: 400; margin-left: 6px; }
.portfolio-project-status { margin-top: 4px; color: var(--muted); font-size: 12px; }
.portfolio-project-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; flex: 0 0 auto; font-size: 14px; color: var(--sky); }
.portfolio-project-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.portfolio-project-description { margin-top: 14px; color: #475467; font-size: 16px; line-height: 1.8; }
.portfolio-project figure { margin-top: 24px; }
.portfolio-preview { display: block; position: relative; overflow: hidden; background: #f4f6f7; border: 1px solid #dce2e5; border-radius: 10px; cursor: zoom-in; }
.portfolio-preview img { display: block; width: 100%; height: auto; }
.preview-learnbuddy { background: #faf8f3; }
.preview-learnbuddy img { width: min(100%, 590px); margin: 0 auto; }
.portfolio-preview-action { position: absolute; bottom: 14px; right: 14px; padding: 8px 12px; border: 1px solid #d9e0e6; border-radius: 6px; background: rgba(255,255,255,.96); color: var(--ink); font-size: 12px; }
.portfolio-preview:hover .portfolio-preview-action { color: var(--sky); border-color: var(--sky); }
.portfolio-project figcaption { margin-top: 10px; color: var(--muted); font-size: 12px; }
.portfolio-library { margin-top: 18px; padding-top: 30px; border-top: 1px solid var(--line); }
.portfolio-library h2 { font-size: 22px; }
.portfolio-library-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); column-gap: 48px; margin-top: 16px; }
.portfolio-library-grid > :is(a,button) { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; min-height: 86px; border: 0; border-bottom: 1px solid #e7ebef; border-radius: 0; background: none; color: var(--ink); text-align: left; font-size: 16px; cursor: pointer; scroll-margin-top: 100px; }
.portfolio-library-grid small { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; font-weight: 400; }
.portfolio-library-grid > :is(a,button) > span:last-child { color: var(--muted); }
.portfolio-library-grid > :is(a,button):hover { color: var(--sky); }
.portfolio-dialog { width: min(1200px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 0; border: 1px solid #dce2e5; border-radius: 10px; color: var(--ink); background: #fff; }
.portfolio-dialog::backdrop { background: rgba(15,23,38,.76); }
.portfolio-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 18px; border-bottom: 1px solid var(--line); }
.portfolio-dialog-head h2 { font-size: 18px; }
.portfolio-dialog-close { display: grid; place-items: center; width: 44px; height: 44px; flex: 0 0 auto; border: 0; border-radius: 6px; color: var(--ink); background: #f3f5f7; font-size: 26px; cursor: pointer; }
.portfolio-dialog-scroll { max-height: calc(100dvh - 205px); overflow: auto; overscroll-behavior: contain; background: #f4f6f7; }
.portfolio-dialog-image { width: 100%; max-height: calc(100dvh - 205px); object-fit: contain; }
.portfolio-dialog-scroll.is-zoomed .portfolio-dialog-image { width: var(--preview-width, 1600px); max-width: none; max-height: none; }
.portfolio-dialog-bottom { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; padding: 10px 18px; }
.portfolio-dialog-note { color: var(--muted); font-size: 12px; line-height: 1.6; }
.portfolio-dialog-tools { display: flex; flex: 0 0 auto; align-items: center; gap: 18px; }
.portfolio-dialog-tools :is(a,button) { display: inline-flex; align-items: center; min-height: 44px; border: 0; background: none; color: var(--sky); font-size: 13px; cursor: pointer; padding: 0; white-space: nowrap; }
.portfolio-page.preview-open { overflow: hidden; }
.portfolio-shell :is(a,button):focus-visible, .portfolio-dialog :is(a,button):focus-visible { outline: 3px solid var(--sky); outline-offset: 4px; }
@media (max-width: 700px) {
  .portfolio-shell { width: calc(100% - 32px); padding: 30px 0 40px; }
  .portfolio-intro { margin-bottom: 28px; }
  .portfolio-intro h1 { font-size: 34px; }
  .portfolio-intro p { font-size: 14px; }
  .portfolio-project { padding: 26px 0 32px; scroll-margin-top: 116px; }
  .portfolio-project-heading { gap: 12px; align-items: flex-start; }
  .portfolio-project h2 { font-size: 24px; }
  .portfolio-project h2 small { display: block; margin: 2px 0 0; font-size: 14px; }
  .portfolio-project-link { font-size: 13px; gap: 6px; }
  .portfolio-project-description { font-size: 14px; margin-top: 12px; }
  .portfolio-project figure { margin-top: 18px; }
  .portfolio-preview { border-radius: 7px; }
  .portfolio-preview-action { right: 8px; bottom: 8px; padding: 6px 9px; font-size: 11px; }
  .portfolio-library-grid { grid-template-columns: 1fr; }
  .portfolio-dialog { width: calc(100% - 16px); max-height: calc(100dvh - 16px); }
  .portfolio-dialog-head { padding: 8px 12px; }
  .portfolio-dialog-head h2 { font-size: 16px; }
  .portfolio-dialog-bottom { align-items: flex-start; flex-direction: column; gap: 3px; padding: 10px 12px; }
  .portfolio-dialog-tools { width: 100%; justify-content: space-between; }
  .portfolio-dialog-scroll, .portfolio-dialog-image { max-height: calc(100dvh - 240px); }
}