:root {
  --teacher-ink: #0b1721;
  --teacher-green: #123d35;
  --teacher-gold: #e5a522;
  --teacher-paper: #fbfaf6;
  --teacher-muted: #5c666c;
  --teacher-rule: #d7d6cd;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--teacher-paper); color: var(--teacher-ink); font-family: "DM Sans", sans-serif; }
a { color: inherit; }
.teacher-skip { position: absolute; top: -60px; left: 15px; z-index: 30; padding: 10px 14px; background: #fff; color: var(--teacher-ink); }
.teacher-skip:focus { top: 12px; }
.teacher-header { position: absolute; top: 0; left: 0; z-index: 10; display: flex; width: 100%; min-height: 80px; align-items: center; justify-content: space-between; padding: 0 6%; background: rgba(9, 22, 31, .9); }
.teacher-header img, .teacher-footer img { border: 1px solid rgba(229, 165, 34, .62); border-radius: 3px; }
.teacher-header img { display: block; width: 165px; height: auto; filter: none; }
.teacher-header nav { display: flex; align-items: center; gap: 28px; }
.teacher-header nav a { color: #fff; font-size: .88rem; font-weight: 600; text-decoration: none; }
.teacher-header nav a:hover { color: var(--teacher-gold); }
.teacher-hero { position: relative; display: grid; min-height: 560px; grid-template-columns: 1.1fr .9fr; align-items: center; overflow: hidden; padding: 115px 8% 70px; background: var(--teacher-ink); color: #fff; }
.teacher-hero::before { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6, 17, 25, .99) 0%, rgba(6, 17, 25, .93) 49%, rgba(6, 17, 25, .25) 100%); content: ""; }
.teacher-hero-copy { position: relative; z-index: 1; max-width: 680px; }
.teacher-eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--teacher-gold); font-size: .76rem; font-weight: 800; text-transform: uppercase; }
.teacher-eyebrow span { width: 22px; height: 2px; background: var(--teacher-gold); }
.teacher-hero h1 { margin: 0; font-family: Manrope, sans-serif; font-size: 3.55rem; font-weight: 800; line-height: 1.08; }
.teacher-hero h1 em { color: var(--teacher-gold); font-style: normal; }
.teacher-hero-copy > p:not(.teacher-eyebrow) { max-width: 560px; margin: 20px 0 27px; color: #e3e8e7; font-size: 1.06rem; line-height: 1.65; }
.teacher-hero-visual { position: absolute; top: 0; right: 0; bottom: 0; width: 48%; background: linear-gradient(90deg, rgba(11, 23, 33, .35), rgba(11, 23, 33, .04)), url("imagenes/virtual1.jpg") center / cover no-repeat; clip-path: ellipse(81% 92% at 100% 50%); }
.teacher-button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 17px; padding: 0 19px; border-radius: 3px; font-size: .9rem; font-weight: 800; text-decoration: none; transition: transform 160ms ease, background-color 160ms ease; }
.teacher-button:hover { transform: translateY(-2px); }
.teacher-button-gold { background: var(--teacher-gold); color: var(--teacher-ink); }
.teacher-button-gold:hover { background: #f3bd4c; }
.teacher-main-grid { display: grid; max-width: 1240px; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .8fr); gap: 70px; margin: 0 auto; padding: 75px 35px 90px; }
.teacher-section + .teacher-section { margin-top: 59px; }
.teacher-kicker { margin: 0 0 13px; color: #9b690d; font-size: .72rem; font-weight: 800; }
.teacher-section h2, .collaboration-panel h2, .teacher-bottom-cta h2 { margin: 0; font-family: Manrope, sans-serif; font-size: 1.8rem; font-weight: 800; line-height: 1.2; }
.subject-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 26px; border-top: 1px solid var(--teacher-rule); border-bottom: 1px solid var(--teacher-rule); }
.subject-list span { padding: 18px 12px; border-right: 1px solid var(--teacher-rule); font-size: .92rem; font-weight: 700; text-align: center; }
.subject-list span:last-child { border-right: 0; }
.teacher-muted { margin: 15px 0 0; color: var(--teacher-muted); font-size: .92rem; }
.teacher-check-list { display: grid; gap: 13px; margin: 22px 0 0; padding: 0; list-style: none; }
.teacher-check-list li { position: relative; padding-left: 25px; color: #39434a; line-height: 1.55; }
.teacher-check-list li::before { position: absolute; top: .15em; left: 0; color: #b97908; content: "✓"; font-weight: 800; }
.process-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin: 28px 0 0; padding: 0; list-style: none; }
.process-list li { min-width: 0; padding-top: 14px; border-top: 2px solid var(--teacher-gold); }
.process-list li > span { color: #a26d0e; font-size: .73rem; font-weight: 800; }
.process-list strong { display: block; margin-top: 9px; font-size: .88rem; }
.process-list p { margin: 6px 0 0; color: var(--teacher-muted); font-size: .78rem; line-height: 1.5; }
.collaboration-panel { align-self: start; padding: 31px 27px; border: 1px solid #d8d5ca; border-top: 4px solid var(--teacher-gold); background: #fff; }
.collaboration-panel h2 { font-size: 1.55rem; }
.collaboration-intro { margin: 13px 0 18px; color: var(--teacher-muted); font-size: .9rem; line-height: 1.6; }
.collaboration-panel ul { margin: 0; padding: 0; list-style: none; }
.collaboration-panel li { display: grid; grid-template-columns: 29px 1fr; gap: 12px; align-items: start; padding: 15px 0; border-top: 1px solid #e2e0d8; }
.collaboration-panel li > span { color: #b97908; font-size: 1.25rem; font-weight: 800; text-align: center; }
.collaboration-panel li p { margin: 0; color: #39434a; font-size: .89rem; line-height: 1.5; }
.collaboration-note { margin: 12px 0 0; color: #9b690d; font-size: .83rem; font-style: italic; line-height: 1.5; }
.teacher-bottom-cta { display: flex; min-height: 270px; align-items: center; justify-content: space-between; gap: 35px; padding: 55px max(8%, calc((100% - 1170px) / 2)); background: var(--teacher-gold); }
.teacher-bottom-cta h2 { max-width: 670px; font-size: 2.15rem; }
.teacher-bottom-cta > div > p:last-child { max-width: 600px; margin: 12px 0 0; color: #3f3521; line-height: 1.6; }
.teacher-bottom-cta .teacher-eyebrow { color: var(--teacher-ink); }
.teacher-bottom-cta .teacher-eyebrow span { background: var(--teacher-ink); }
.teacher-button-dark { flex-shrink: 0; background: var(--teacher-ink); color: #fff; }
.teacher-button-dark:hover { background: var(--teacher-green); }
.teacher-footer { display: flex; min-height: 105px; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding: 25px 6%; background: var(--teacher-ink); color: #d1d7d7; font-size: .82rem; }
.teacher-footer img { display: block; width: 145px; height: auto; filter: none; }
.teacher-footer nav { display: flex; gap: 18px; }
.teacher-footer nav a { color: #fff; text-decoration: none; }
.teacher-footer nav a:hover { color: var(--teacher-gold); }

@media (max-width: 900px) {
  .teacher-header { padding: 0 5%; }
  .teacher-hero { min-height: 530px; grid-template-columns: 1fr; padding-right: 7%; padding-left: 7%; }
  .teacher-hero-copy { max-width: 610px; }
  .teacher-hero h1 { font-size: 3rem; }
  .teacher-hero-visual { width: 58%; opacity: .55; }
  .teacher-main-grid { grid-template-columns: 1fr; gap: 48px; padding: 58px 6% 70px; }
  .collaboration-panel { max-width: none; }
  .teacher-bottom-cta { padding-right: 6%; padding-left: 6%; }
}

@media (max-width: 620px) {
  .teacher-header { min-height: 70px; padding: 0 20px; }
  .teacher-header img { width: 139px; }
  .teacher-header nav { gap: 13px; }
  .teacher-header nav a { font-size: .75rem; }
  .teacher-header nav a:nth-child(3) { display: none; }
  .teacher-hero { min-height: 580px; align-items: end; padding: 115px 23px 55px; }
  .teacher-hero::before { background: linear-gradient(0deg, rgba(6,17,25,.97) 0%, rgba(6,17,25,.83) 58%, rgba(6,17,25,.35) 100%); }
  .teacher-hero-visual { width: 100%; clip-path: none; opacity: .46; }
  .teacher-hero h1 { font-size: 2.45rem; }
  .teacher-hero-copy > p:not(.teacher-eyebrow) { font-size: .98rem; }
  .teacher-button { width: 100%; }
  .teacher-main-grid { padding: 49px 22px 58px; }
  .teacher-section + .teacher-section { margin-top: 45px; }
  .teacher-section h2 { font-size: 1.55rem; }
  .subject-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .subject-list span:nth-child(2) { border-right: 0; }
  .subject-list span:nth-child(-n+2) { border-bottom: 1px solid var(--teacher-rule); }
  .process-list { grid-template-columns: 1fr; gap: 0; }
  .process-list li { display: grid; grid-template-columns: 36px 1fr; padding: 14px 0; }
  .process-list strong { margin-top: 0; }
  .process-list p { margin-top: 4px; }
  .collaboration-panel { padding: 25px 20px; }
  .teacher-bottom-cta { flex-direction: column; align-items: stretch; gap: 24px; padding: 43px 23px; }
  .teacher-bottom-cta h2 { font-size: 1.8rem; }
  .teacher-footer { flex-direction: column; align-items: flex-start; padding: 31px 23px; }
}

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