:root {
  /* Palette — abyssal navy + reef teal + warm coral accent + sand */
  --abyss-1: #08121f;
  --abyss-2: #0e1c30;
  --abyss-3: #142840;
  --teal-1:  #0f4c5c;
  --teal-2:  #155566;
  --coral:   #e26d5a;
  --coral-2: #c8533f;
  --sand:    #f4ede0;
  --sand-2:  #e8dec8;
  --bone:    #faf8f3;
  --ink:     #0a1320;
  --rule:    rgba(10, 19, 32, 0.16);
  --rule-d:  rgba(244, 237, 224, 0.18);

  --serif: 'Cormorant Garamond', 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bone);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--coral); color: var(--bone); }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- Top nav ---------- */
.topnav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.topnav-inner {
  max-width: 1320px; margin: 0 auto;
  padding: 14px 32px;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 36px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--abyss-1); }
.brand-mark { color: var(--coral); display: flex; }
.brand-name {
  font-family: var(--sans); font-weight: 600; font-size: 13px;
  letter-spacing: 0.18em;
}
.brand-sub {
  font-family: var(--mono); font-size: 10px;
  color: var(--abyss-2); opacity: 0.7;
  letter-spacing: 0.08em;
}
.topnav-links {
  display: flex; gap: 4px; justify-content: center;
}
.topnav-link {
  background: none; border: 0; padding: 8px 12px;
  font-size: 13px; color: var(--abyss-1);
  letter-spacing: 0.02em;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}
.topnav-link:hover { color: var(--coral-2); }
.topnav-link.is-active { border-bottom-color: var(--coral); color: var(--coral-2); }
.topnav-cta {
  background: var(--abyss-1); color: var(--bone);
  border: 0; padding: 10px 18px;
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background 0.18s;
}
.topnav-cta:hover { background: var(--coral-2); }

/* ---------- Hero ---------- */
.hero {
  background: var(--abyss-1);
  color: var(--sand);
  padding: 60px 32px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(ellipse at 80% 20%, rgba(226,109,90,0.08), transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(15,76,92,0.20), transparent 60%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  max-width: 1320px; margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr 360px;
  gap: 48px;
  align-items: start;
  padding-bottom: 60px;
}
.hero-meta {
  display: flex; flex-direction: column; gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--rule-d);
}
.meta-line {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sand); opacity: 0.78;
  display: flex; align-items: center; gap: 10px;
  padding-top: 10px;
}
.hero-eyebrow {
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 18px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(56px, 9vw, 132px);
  line-height: 0.92;
  margin: 0 0 28px;
  letter-spacing: -0.02em;
}
.hero-title span { display: block; }
.hl-the { font-style: italic; opacity: 0.7; font-size: 0.45em; margin-bottom: 4px; }
.hl-coral { color: var(--coral); }
.hl-experience { font-style: italic; }
.hero-deck {
  font-family: var(--serif);
  font-size: clamp(20px, 1.6vw, 26px);
  line-height: 1.45;
  font-weight: 400;
  max-width: 620px;
  color: var(--sand);
  margin: 0 0 36px;
}
.hero-ctas {
  display: flex; gap: 14px; flex-wrap: wrap;
}
.hero-side {
  display: flex; flex-direction: column; gap: 14px;
}
.hero-imgbox { border: 1px solid var(--rule-d); }
.hero-credits {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--sand); opacity: 0.7;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  font-size: 13px; letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.btn-arrow { font-size: 16px; transition: transform 0.2s; }
.btn:hover .btn-arrow { transform: translateX(3px); }
.btn-primary { background: var(--coral); color: var(--bone); border-color: var(--coral); }
.btn-primary:hover { background: var(--coral-2); border-color: var(--coral-2); }
.btn-ghost { background: transparent; color: var(--sand); }
.btn-ghost:hover { background: var(--sand); color: var(--abyss-1); }
.btn-secondary { background: var(--abyss-1); color: var(--bone); border-color: var(--abyss-1); }
.btn-secondary:hover { background: var(--teal-1); border-color: var(--teal-1); }
.btn.lg { padding: 18px 28px; font-size: 14px; }

/* ---------- Fact strip ---------- */
.fact-strip {
  position: relative;
  max-width: 1320px; margin: 0 auto;
  border-top: 1px solid var(--rule-d);
  border-bottom: 1px solid var(--rule-d);
  display: grid; grid-template-columns: repeat(6, 1fr);
}
.fact {
  padding: 22px 24px;
  border-right: 1px solid var(--rule-d);
}
.fact:last-child { border-right: 0; }
.fact-k {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 8px;
}
.fact-v {
  font-family: var(--serif); font-size: 22px;
  color: var(--sand); line-height: 1.1;
}

/* ---------- Section rule ---------- */
.section-rule {
  display: grid; grid-template-columns: auto 1fr auto 1fr;
  align-items: center; gap: 16px;
  margin: 0 auto 48px;
  max-width: 1320px;
  padding: 0 0;
}
.rule-num {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.2em; color: var(--coral);
}
.rule-line { height: 1px; background: var(--rule); }
.rule-label {
  font-family: var(--serif); font-style: italic;
  font-size: 24px; color: var(--abyss-1);
}

/* ---------- Weeks ---------- */
.weeks {
  background: var(--bone); color: var(--ink);
  padding: 100px 32px;
}
.weeks-lede {
  max-width: 720px; margin: -28px auto 56px;
  font-family: var(--serif); font-size: 22px;
  line-height: 1.5; color: var(--abyss-2);
  text-align: center;
}
.weeks-grid {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.weeks-grid.emphasis-week1 [data-week="2"] { opacity: 0.55; }
.weeks-grid.emphasis-week2 [data-week="1"] { opacity: 0.55; }
.week-card {
  background: var(--bone);
  border: 1px solid var(--rule);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
  transition: opacity 0.3s, transform 0.3s;
}
.week-card-head {
  display: flex; justify-content: space-between; align-items: center;
}
.week-code {
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.2em; color: var(--coral);
  background: rgba(226, 109, 90, 0.08);
  padding: 6px 10px;
}
.week-dates {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--abyss-2); opacity: 0.7;
}
.week-title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(34px, 3.2vw, 48px);
  line-height: 1.05; margin: 0;
  letter-spacing: -0.01em;
  color: var(--abyss-1);
}
.week-sub {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--teal-1);
  margin-top: -10px;
}
.week-blurb {
  font-size: 15.5px; line-height: 1.65;
  color: var(--abyss-2); margin: 0;
  text-wrap: pretty;
}
.week-learn-head {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--coral);
  border-top: 1px solid var(--rule);
  padding-top: 16px;
}
.week-learn { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.week-learn li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 14.5px; line-height: 1.5; color: var(--abyss-2);
}
.week-learn li svg { margin-top: 7px; }
.week-link {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 8px;
  padding-top: 12px;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--coral);
  border-top: 1px solid var(--rule);
  align-self: flex-start;
  width: 100%;
}
.week-link:hover { color: var(--coral-2); }

/* ---------- Daily schedule ---------- */
.schedule {
  background: var(--abyss-1);
  color: var(--sand);
  padding: 100px 32px;
}
.schedule .section-rule .rule-label { color: var(--sand); }
.schedule .section-rule .rule-line { background: var(--rule-d); }
.schedule-tabs {
  max-width: 1320px; margin: 0 auto 32px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border: 1px solid var(--rule-d);
}
.schedule-tab {
  background: transparent; border: 0;
  padding: 22px 26px; text-align: left;
  color: var(--sand); opacity: 0.55;
  border-right: 1px solid var(--rule-d);
  transition: opacity 0.2s, background 0.2s;
}
.schedule-tab:last-child { border-right: 0; }
.schedule-tab:hover { opacity: 0.85; }
.schedule-tab.is-active {
  opacity: 1;
  background: var(--abyss-3);
}
.tab-code {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--coral);
  margin-bottom: 6px;
}
.tab-title {
  font-family: var(--serif); font-style: italic;
  font-size: 22px; line-height: 1.2;
}
.day-list {
  max-width: 1320px; margin: 0 auto;
  border-top: 1px solid var(--rule-d);
}
.day-row { border-bottom: 1px solid var(--rule-d); }
.day-head {
  width: 100%; background: transparent; border: 0;
  display: grid; grid-template-columns: 160px 1fr 30px;
  align-items: center; gap: 24px;
  padding: 22px 4px;
  color: var(--sand); text-align: left;
  transition: background 0.18s;
}
.day-head:hover { background: rgba(244, 237, 224, 0.04); }
.day-row.is-open .day-head { background: rgba(244, 237, 224, 0.04); }
.day-name {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--coral);
}
.day-topic {
  font-family: var(--serif); font-size: 26px;
  font-style: italic; line-height: 1.15;
}
.day-toggle {
  font-family: var(--serif); font-size: 28px;
  text-align: right;
}
.day-body {
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.day-table {
  width: 100%; border-collapse: collapse;
  margin: 4px 0 24px;
}
.day-table td {
  padding: 12px 0;
  border-top: 1px solid var(--rule-d);
  vertical-align: top;
  color: var(--sand); opacity: 0.92;
}
.t-time {
  width: 160px;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.06em; color: var(--coral);
  white-space: nowrap;
}
.t-act {
  font-size: 15px; line-height: 1.55;
  text-wrap: pretty;
}

/* ---------- Highlights ---------- */
.highlights {
  background: var(--sand);
  color: var(--abyss-1);
  padding: 100px 32px;
}
.hl-grid {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.hl-card {
  padding: 32px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--sand);
  transition: background 0.2s;
}
.hl-card:hover { background: var(--sand-2); }
.hl-num {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--coral);
  margin-bottom: 24px;
}
.hl-h {
  font-family: var(--serif); font-weight: 400;
  font-size: 28px; line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}
.hl-p {
  font-size: 14.5px; line-height: 1.6;
  color: var(--abyss-2);
  margin: 0;
  text-wrap: pretty;
}
.leave-with {
  max-width: 1320px; margin: 56px auto 0;
  background: var(--abyss-1); color: var(--sand);
  padding: 36px 40px;
  display: grid; grid-template-columns: 240px 1fr;
  gap: 36px; align-items: start;
}
.lw-head {
  font-family: var(--serif); font-style: italic;
  font-size: 24px;
}
.lw-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px 32px;
  font-size: 15px;
}
.lw-grid > div {
  display: flex; gap: 10px; align-items: flex-start;
  border-top: 1px solid var(--rule-d);
  padding-top: 12px;
}
.lw-grid span { color: var(--coral); font-family: var(--mono); }

/* ---------- Team ---------- */
.team {
  background: var(--bone); color: var(--ink);
  padding: 100px 32px;
}
.team-intro {
  max-width: 720px; margin: -28px auto 56px;
  text-align: center;
}
.team-intro p {
  font-family: var(--serif); font-size: 22px;
  line-height: 1.5; color: var(--abyss-2);
  margin: 0;
}
.team-grid {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.team-card {
  display: flex; flex-direction: column; gap: 14px;
  border: 1px solid var(--rule);
  padding: 24px;
}
.team-role {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--coral);
}
.team-name {
  font-family: var(--serif); font-size: 32px;
  line-height: 1.05; margin: -4px 0 0;
}
.team-bio {
  font-size: 14.5px; line-height: 1.6;
  color: var(--abyss-2); margin: 0;
  text-wrap: pretty;
}

/* ---------- FAQ ---------- */
.faq {
  background: var(--sand); color: var(--abyss-1);
  padding: 100px 32px;
}
.faq-list {
  max-width: 1100px; margin: 0 auto;
  border-top: 1px solid var(--rule);
}
.faq-row { border-bottom: 1px solid var(--rule); }
.faq-q {
  width: 100%; background: transparent; border: 0;
  display: grid; grid-template-columns: 60px 1fr 30px;
  align-items: center; gap: 24px;
  padding: 22px 0;
  text-align: left; color: var(--abyss-1);
  transition: color 0.2s;
}
.faq-q:hover { color: var(--coral-2); }
.faq-num {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--coral);
}
.faq-text {
  font-family: var(--serif); font-size: 22px; line-height: 1.3;
}
.faq-tog { font-family: var(--serif); font-size: 26px; text-align: right; }
.faq-a {
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a p {
  margin: 0 0 24px;
  padding-left: 84px;
  max-width: 820px;
  font-size: 15.5px; line-height: 1.65;
  color: var(--abyss-2);
}

/* ---------- Register ---------- */
.register {
  background: var(--abyss-1); color: var(--sand);
  padding: 100px 32px;
}
.register .section-rule .rule-label { color: var(--sand); }
.register .section-rule .rule-line { background: var(--rule-d); }
.reg-grid {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px;
  align-items: start;
}
.reg-h {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 5vw, 72px); line-height: 1; margin: 0 0 24px;
  letter-spacing: -0.02em;
}
.reg-p {
  font-family: var(--serif); font-size: 22px;
  line-height: 1.5; max-width: 560px;
  color: var(--sand); opacity: 0.85;
  margin: 0 0 36px;
}
.reg-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.reg-channels {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  border-top: 1px solid var(--rule-d);
  padding-top: 24px;
}
.ch-k {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 8px;
}
.ch-v {
  font-family: var(--serif); font-size: 17px; line-height: 1.4;
}
.ch-link {
  display: inline-flex; align-items: baseline; gap: 8px;
  border-bottom: 1px solid var(--rule-d);
  padding-bottom: 4px;
  transition: color 0.18s, border-color 0.18s;
}
.ch-link:hover { color: var(--coral); border-color: var(--coral); }
.reg-card {
  background: var(--abyss-2);
  border: 1px solid var(--rule-d);
  padding: 32px;
}
.reg-card-h {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 18px;
}
.reg-dl { margin: 0 0 24px; padding: 0; }
.reg-dl > div {
  display: grid; grid-template-columns: 1fr 1fr;
  padding: 12px 0;
  border-top: 1px solid var(--rule-d);
}
.reg-dl > div:last-child { border-bottom: 1px solid var(--rule-d); }
.reg-dl dt {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sand); opacity: 0.7;
}
.reg-dl dd {
  margin: 0; font-family: var(--serif); font-size: 18px; text-align: right;
  color: var(--sand);
}
.reg-fine {
  font-size: 13px; line-height: 1.55; opacity: 0.7;
}
.reg-fineprint {
  margin-top: 18px;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--sand); opacity: 0.55;
  line-height: 1.5;
}

/* ---------- Footer ---------- */
.foot {
  background: #04090f; color: var(--sand);
  padding: 60px 32px 36px;
}
.foot-row {
  max-width: 1320px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 2fr;
  gap: 48px;
  border-bottom: 1px solid var(--rule-d);
  padding-bottom: 36px;
}
.foot-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.fc-h {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 10px;
}
.foot-cols > div { font-size: 14px; line-height: 1.7; opacity: 0.8; }
.foot-fine {
  max-width: 1320px; margin: 24px auto 0;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.1em; text-transform: uppercase;
  opacity: 0.5; line-height: 1.6;
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-meta { flex-direction: row; flex-wrap: wrap; gap: 24px; padding-top: 0; border-top: 0; }
  .hero-side { order: -1; }
  .fact-strip { grid-template-columns: repeat(3, 1fr); }
  .fact:nth-child(3n) { border-right: 0; }
  .fact:nth-child(-n+3) { border-bottom: 1px solid var(--rule-d); }
  .weeks-grid { grid-template-columns: 1fr; }
  .hl-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr; max-width: 640px; }
  .reg-grid { grid-template-columns: 1fr; gap: 48px; }
  .foot-row { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: repeat(3, 1fr); }
  .topnav-links { display: none; }
  .topnav-inner { grid-template-columns: 1fr auto; }
  .leave-with { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .topnav-inner { padding: 12px 18px; gap: 12px; }
  .brand-sub { display: none; }
  .hero { padding: 40px 20px 0; }
  .weeks, .schedule, .highlights, .team, .faq, .register { padding: 64px 20px; }
  .fact-strip { grid-template-columns: 1fr 1fr; }
  .fact { border-right: 1px solid var(--rule-d); border-bottom: 1px solid var(--rule-d); }
  .fact:nth-child(2n) { border-right: 0; }
  .hl-grid { grid-template-columns: 1fr; }
  .reg-channels { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: 1fr; }
  .day-head { grid-template-columns: 100px 1fr 24px; gap: 14px; }
  .day-topic { font-size: 20px; }
  .reg-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: space-between; }
}