:root {
  --paper: #f5f0e8;
  --paper-2: #eee6da;
  --ink: #11110f;
  --muted: #6f6a61;
  --gold: #b9872e;
  --gold-2: #d8b369;
  --line: rgba(17,17,15,.12);
  --dark: #151511;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(203,158,69,.16), transparent 22rem),
    radial-gradient(circle at 8% 28%, rgba(255,255,255,.82), transparent 28rem),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:focus-visible, video:focus-visible { outline: 3px solid rgba(185,135,46,.58); outline-offset: 4px; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #7c5b20;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.kicker::before { content: ""; width: 30px; height: 1px; background: var(--gold); }
.course-page { overflow: hidden; padding: 150px 0 110px; }

.course-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .72fr);
  gap: clamp(44px, 7vw, 100px);
  align-items: center;
  min-height: 670px;
}
.course-hero h1,
.course-spotlight h2,
.section-heading h2,
.lesson-page h1,
.lesson-page h2 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -.05em;
}
.course-hero h1 {
  max-width: 720px;
  margin: 18px 0 23px;
  font-size: clamp(54px, 6.7vw, 90px);
  line-height: .94;
}
.course-hero h1 em { color: var(--gold); font-style: italic; font-weight: 400; }
.course-hero p,
.lesson-summary,
.lesson-section p,
.exercise-card p,
.lesson-app-card p { color: var(--muted); line-height: 1.72; }
.course-hero p { max-width: 590px; margin: 0; font-size: 18px; }

.course-hero-visual {
  position: relative;
  display: grid;
  min-height: 590px;
  place-items: center;
  isolation: isolate;
}
.course-hero-visual::before {
  content: "";
  position: absolute;
  z-index: -2;
  width: min(510px, 104%);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    repeating-radial-gradient(circle at 50% 58%, transparent 0 20px, rgba(167,126,47,.12) 21px 22px),
    radial-gradient(circle at 47% 42%, rgba(255,255,255,.96), rgba(224,210,185,.48) 53%, rgba(182,139,58,.11) 70%, transparent 72%);
  transform: rotate(-7deg);
}
.course-hero-visual::after {
  content: "Screen Path · Courses";
  position: absolute;
  z-index: -1;
  right: -12px;
  bottom: 44px;
  padding: 10px 13px;
  border: 1px solid rgba(185,135,46,.25);
  border-radius: 999px;
  background: rgba(255,252,246,.86);
  box-shadow: 0 16px 38px rgba(48,37,21,.12);
  color: #7c5b20;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.course-hero-visual img {
  width: auto;
  height: min(560px, 58vw);
  max-width: 100%;
  object-fit: contain;
  border: 1px solid rgba(17,17,15,.13);
  border-radius: 33px;
  background: #171714;
  box-shadow: 0 34px 70px rgba(44,34,20,.24);
  transform: rotate(2.1deg);
}

.course-catalog { padding-top: 115px; }
.section-heading {
  margin-bottom: 34px;
}
.course-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 344px;
  padding: 25px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(255,255,255,.48);
  transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease, background .24s ease;
}
.course-card::after {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -46px;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(185,135,46,.16);
  border-radius: 50%;
}
.course-card:hover {
  transform: translateY(-6px);
  border-color: rgba(185,135,46,.36);
  background: rgba(255,255,255,.78);
  box-shadow: 0 24px 52px rgba(51,40,23,.12);
}
.course-number,
.course-count { display: block; color: #8a601d; font-size: 10px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.course-card h2 { position: relative; z-index: 1; margin: auto 0 14px; font-family: var(--serif); font-size: 30px; font-weight: 500; line-height: 1.02; letter-spacing: -.04em; }
.course-card p { position: relative; z-index: 1; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.course-count { position: relative; z-index: 1; margin-top: 22px; }

.course-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 60px;
  align-items: center;
  margin-top: 116px;
  padding: clamp(30px, 4.5vw, 58px);
  overflow: hidden;
  border-radius: 31px;
  background:
    radial-gradient(circle at 86% 16%, rgba(216,179,105,.19), transparent 19rem),
    var(--dark);
  color: white;
}
.course-spotlight h2 { margin: 12px 0 17px; font-size: clamp(42px, 5vw, 68px); line-height: .97; }
.course-spotlight p { max-width: 650px; margin: 0; color: #c4bfb6; line-height: 1.72; }
.course-spotlight .kicker { color: var(--gold-2); }
.course-spotlight-mark {
  display: grid;
  place-items: center;
  width: min(100%, 210px);
  aspect-ratio: 1;
  justify-self: end;
  border: 1px solid rgba(216,179,105,.38);
  border-radius: 50%;
  color: var(--gold-2);
  font-family: var(--serif);
  font-size: clamp(72px, 10vw, 126px);
  line-height: 1;
  box-shadow: inset 0 0 0 26px rgba(216,179,105,.045);
}
.lesson-chip {
  display: grid;
  gap: 5px;
  max-width: 590px;
  margin-top: 28px;
  padding: 17px 18px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 17px;
  background: rgba(255,255,255,.04);
}
.lesson-chip strong { font-family: var(--serif); font-size: 21px; font-weight: 500; }
.lesson-chip span { color: #aaa69d; font-size: 12px; line-height: 1.5; }
.course-button {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 24px;
  padding: 13px 17px;
  border-radius: 13px;
  background: var(--gold-2);
  color: #17130d;
  font-size: 12px;
  font-weight: 800;
  transition: transform .2s ease, background .2s ease;
}
.course-button:hover { transform: translateY(-2px); background: #efca80; }

.lesson-page { width: min(1040px, calc(100% - 40px)); margin-inline: auto; }
.back-link { display: inline-flex; gap: 8px; margin-bottom: 44px; color: #8a601d; font-size: 13px; font-weight: 750; white-space: nowrap; }
.lesson-page h1 { max-width: 820px; margin: 18px 0 18px; font-size: clamp(50px, 6.2vw, 82px); line-height: .95; }
.lesson-summary { max-width: 690px; margin: 0; font-size: 19px; }
.lesson-layout { display: grid; grid-template-columns: minmax(0, 1fr) 274px; gap: clamp(34px, 6vw, 74px); align-items: start; margin-top: 64px; }
.lesson-video {
  margin-bottom: 34px;
  padding: 10px;
  overflow: hidden;
  border: 1px solid rgba(17,17,15,.14);
  border-radius: 24px;
  background: #131310;
  box-shadow: 0 26px 60px rgba(38,28,17,.18);
}
.lesson-video video::cue { text-align: center; }
.lesson-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #050505;
  object-fit: contain;
  border-radius: 16px;
}
.lesson-video-caption { margin: 13px 7px 2px; color: #c4bfb6; font-size: 12px; line-height: 1.5; }
.lesson-section { padding: 30px 0 45px; border-top: 1px solid var(--line); }
.lesson-section p { margin: 14px 0 0; font-size: 18px; }
.exercise-card { margin-top: 20px; padding: 28px; border-radius: 22px; background: var(--paper-2); }
.exercise-card h2 { margin: 12px 0; font-size: 33px; line-height: 1; }
.exercise-card p { margin: 0; font-size: 15px; }
.lesson-app-card {
  position: sticky;
  top: 108px;
  padding: 26px;
  border-radius: 23px;
  background: var(--dark);
  color: white;
  box-shadow: 0 25px 55px rgba(29,23,15,.16);
}
.lesson-app-card h2 { margin: 13px 0; font-size: 31px; line-height: 1.02; }
.lesson-app-card p { margin: 0; color: #c4bfb6; font-size: 13px; }
.lesson-app-card .kicker { color: var(--gold-2); }
.course-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 25px;
  border: 1px solid rgba(216,179,105,.45);
  border-radius: 50%;
  color: var(--gold-2);
  font-family: var(--serif);
  font-size: 19px;
}

footer { margin-top: 110px; padding: 30px 0; border-top: 1px solid var(--line); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 22px; color: var(--muted); font-size: 12px; }
.footer-inner .brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-family: var(--serif); font-size: 18px; font-weight: 700; }
.footer-inner .brand img { border-radius: 10px; box-shadow: 0 5px 14px rgba(17,17,15,.14); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: end; gap: 14px; }
.footer-links a:hover { color: var(--ink); }

@media (max-width: 850px) {
  .course-page { padding-top: 120px; }
  .course-hero { grid-template-columns: 1fr; min-height: 0; }
  .course-hero-visual { min-height: 490px; order: -1; }
  .course-hero-visual img { height: min(500px, 108vw); }
  .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .course-spotlight { grid-template-columns: 1fr 160px; gap: 28px; margin-top: 78px; }
  .course-spotlight-mark { width: 150px; }
  .lesson-layout { grid-template-columns: 1fr; gap: 34px; }
  .lesson-app-card { position: static; }
  .footer-inner { flex-wrap: wrap; }
  .footer-links { justify-content: start; }
}
@media (max-width: 560px) {
  .shell, .lesson-page { width: min(100% - 28px, 1180px); }
  .course-hero h1 { font-size: clamp(48px, 14vw, 68px); }
  .course-hero-visual { min-height: 415px; }
  .course-hero-visual::after { right: 0; bottom: 16px; }
  .course-hero-visual img { height: min(430px, 111vw); border-radius: 27px; }
  .course-catalog { padding-top: 78px; }
  .course-grid { grid-template-columns: 1fr; }
  .course-card { min-height: 260px; }
  .course-spotlight { grid-template-columns: 1fr; padding: 29px; }
  .course-spotlight-mark { display: none; }
  .lesson-page h1 { font-size: clamp(46px, 13vw, 64px); }
  .lesson-summary { font-size: 17px; }
  .lesson-layout { margin-top: 42px; }
  .lesson-video { margin-inline: -2px; padding: 7px; border-radius: 19px; }
  .lesson-video video { border-radius: 13px; }
  .exercise-card { padding: 23px; }
  footer { margin-top: 76px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}