/* 2026-10-31: AI Tutor update, using the existing brand palette. */
.tutor-update {
  --teal: #1e6f66;
  background: #eaf0ed;
  border-top: 1px solid var(--line);
  scroll-margin-top: 82px;
}

.tutor-update__intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: start;
  margin-bottom: 56px;
}

.tutor-update .serif-heading {
  margin-bottom: 0;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.35;
}

.tutor-update__mobile-break { display: none; }
.tutor-update__lead { padding-top: 44px; }
.tutor-update__lead .lead { margin-bottom: 20px; font-size: clamp(19px, 1.7vw, 23px); }
.tutor-update__lead > p:last-child { margin-bottom: 0; }
.tutor-update__status {
  padding-left: 16px;
  border-left: 3px solid var(--teal);
  color: #435c55;
  font-size: 14px;
  line-height: 1.8;
}

.tutor-update__features {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 2px solid var(--ink);
}

.tutor-update__features > li {
  display: grid;
  grid-template-columns: 48px minmax(0, .85fr) minmax(0, 1.2fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
  padding-block: 36px;
  border-bottom: 1px solid #bdcdc5;
}

.tutor-update__number { font-size: 15px; font-weight: 700; color: var(--teal); line-height: 2; }
.tutor-update__features h3 { margin: 0; font-size: clamp(23px, 2.3vw, 30px); line-height: 1.55; letter-spacing: -.025em; }
.tutor-update__features p { margin-bottom: 14px; line-height: 1.9; }
.tutor-update__features .tutor-update__example { margin-bottom: 0; font-size: 14px; color: #435c55; }

.tutor-update__quota {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(24px, 6vw, 88px);
  margin-top: 48px;
}
.tutor-update__quota > div > p { margin-bottom: 8px; color: var(--teal); font-size: 14px; font-weight: 700; }
.tutor-update__quota strong { display: block; font-size: clamp(22px, 2.2vw, 29px); line-height: 1.65; }
.tutor-update__quota > p { margin-bottom: 0; font-size: 15px; }
.tutor-update__note { max-width: 72em; margin: 28px 0 0; color: #435c55; font-size: 13px; line-height: 1.9; }
.access-copy dd > a { text-decoration: underline; text-underline-offset: 4px; }
.faq-list details p a { text-decoration: underline; text-underline-offset: 4px; }
.screen-proof--home figcaption > .text-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 12px; font-size: 14px; }

.screen-story--terra { grid-template-columns: minmax(0, 1fr) minmax(0, .85fr); gap: clamp(36px, 7vw, 100px); }
.tutor-overview { align-self: center; padding-block: 32px; border-top: 3px solid var(--teal); }
.tutor-overview h3 { margin-bottom: 28px; font-size: clamp(27px, 2.8vw, 40px); line-height: 1.5; letter-spacing: -.025em; }
.tutor-overview > p { font-size: 16px; }
.tutor-overview ul { list-style: none; margin: 28px 0; padding: 0; border-top: 1px solid var(--line); }
.tutor-overview li { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.8; }
.tutor-overview .text-link { display: inline-flex; align-items: center; min-height: 44px; margin: 0; font-size: 14px; }

@media (max-width: 1080px) {
  .tutor-update__features > li { grid-template-columns: 32px minmax(0, 1fr) minmax(0, 1.2fr); gap: 24px; }
}
@media (max-width: 820px) {
  .screen-story--terra { grid-template-columns: 1fr; gap: 40px; }
  .tutor-overview { width: min(100%, 520px); margin-inline: auto; }
  .tutor-update { scroll-margin-top: 72px; }
  .tutor-update__intro, .tutor-update__quota { grid-template-columns: 1fr; gap: 24px; }
  .tutor-update__intro { margin-bottom: 36px; }
  .tutor-update__lead { padding-top: 0; max-width: 38em; }
  .tutor-update__features > li { grid-template-columns: 32px minmax(0, 1fr); gap: 14px 20px; padding-block: 28px; }
  .tutor-update__features > li > div { grid-column: 2; }
  .tutor-update__quota { margin-top: 32px; gap: 16px; }
}
@media (max-width: 560px) {
  .tutor-update .serif-heading { font-size: clamp(29px, 8vw, 40px); }
  .tutor-update__mobile-break { display: block; }
  .tutor-update__features > li { grid-template-columns: 26px minmax(0, 1fr); column-gap: 14px; }
  .tutor-update__features h3 { font-size: clamp(21px, 5.7vw, 26px); }
  .tutor-update__features p { font-size: 15px; }
  .tutor-update__features .tutor-update__example { font-size: 13px; }
  .tutor-update__quota strong { font-size: 23px; }
}

/* 2026-10-31: Release notes in the hero and the published ChatGPT plugin. */
.hero-news {
  display: flex;
  flex-wrap: wrap;
  gap: 0 28px;
  margin: 14px 0 0;
  padding: 4px 0 0;
  border-top: 1px solid rgba(255,255,255,.18);
  list-style: none;
  font-size: 13px;
}
.hero-news a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: rgba(255,255,255,.88);
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,.4);
  text-underline-offset: 4px;
}
.hero-news a:hover { color: var(--white); text-decoration-color: currentColor; }
.hero-news a span { text-decoration: none; }
.js .hero-news { animation-delay: 640ms; }

.chatgpt-launch {
  padding-block: clamp(56px, 7vw, 96px);
  border-block: 1px solid var(--line);
  background: var(--paper);
  scroll-margin-top: 82px;
}
.chatgpt-launch__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
}
.chatgpt-launch .serif-heading {
  margin-bottom: 24px;
  font-size: clamp(30px, 3.6vw, 52px);
  line-height: 1.35;
}
.chatgpt-launch__copy > p:not(.section-label) { max-width: 34em; margin-bottom: 12px; font-size: 16px; line-height: 1.85; }
.chatgpt-launch__copy > .chatgpt-launch__note { margin-bottom: 8px; color: var(--muted); font-size: 14px; }
.chatgpt-launch .text-link { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; font-size: 14px; }
.chatgpt-launch__screen { margin: 0; }
.chatgpt-launch__screen img { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; background: #fafafa; }
.chatgpt-launch__screen figcaption { margin-top: 12px; color: var(--muted); font-size: 13px; line-height: 1.7; }

@media (max-width: 820px) {
  .chatgpt-launch { scroll-margin-top: 72px; }
  .chatgpt-launch__inner { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 560px) {
  .hero-news { flex-direction: column; font-size: 12px; }
  .chatgpt-launch .serif-heading { font-size: clamp(27px, 7.6vw, 36px); }
}