/* ════════════════════════════════════════════════════════════
   NIS Initiative — editorial dark theme
   Fraunces (display) · IBM Plex Sans (body) · IBM Plex Mono (accents)
   ════════════════════════════════════════════════════════════ */

:root {
  /* ── palette ─────────────────────────────────────────────── */
  --c-ink:        #0d1b2a;   /* deep navy — primary */
  --c-ink-2:      #142436;   /* slightly lighter navy */
  --c-ink-3:      #1c2f44;   /* card surface */
  --c-paper:      #f4efe6;   /* warm off-white */
  --c-paper-2:    #ebe3d4;   /* slightly darker paper */
  --c-rule:       #2a3d54;   /* hairline on dark */
  --c-rule-paper: #d8cdb8;   /* hairline on paper */

  --c-accent:     #d4974e;   /* warm amber — signature */
  --c-accent-2:   #b87a36;   /* amber pressed */
  --c-cinnabar:   #c8533c;   /* secondary editorial accent */
  --c-mute:       #8a96a6;   /* muted text on dark */
  --c-mute-2:     #6f7c8d;

  /* ── type ─────────────────────────────────────────────────── */
  --f-display: 'Fraunces', 'Cambria', 'Times New Roman', serif;
  --f-body:    'IBM Plex Sans', 'Helvetica Neue', system-ui, sans-serif;
  --f-mono:    'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  /* ── layout ──────────────────────────────────────────────── */
  --wrap: 1240px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
}

/* ── reset ─────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--c-ink);
  color: var(--c-paper);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* paper background for select blocks */
.block-program, .block-register {
  background: var(--c-paper);
  color: var(--c-ink);
}

/* ── wrap ──────────────────────────────────────────────────── */
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* ════════════════════════════════════════════════════════════
   HEADER / NAV
   ════════════════════════════════════════════════════════════ */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 27, 42, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--c-rule);
}
.nav-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--c-paper);
}
.brand-mark { color: var(--c-accent); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.brand-sub {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-mute);
  margin-top: 2px;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 1.75rem;
  font-family: var(--f-body);
  font-size: 0.88rem;
  font-weight: 500;
}
.nav a {
  color: var(--c-paper);
  opacity: 0.78;
  transition: opacity 0.2s, color 0.2s;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
}
.nav a:hover { opacity: 1; border-bottom-color: var(--c-accent); }
.nav-cta {
  color: var(--c-accent) !important;
  opacity: 1 !important;
}
.nav-cta:hover { color: var(--c-paper) !important; }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--c-mute);
}
.lang-switch button {
  background: none;
  border: none;
  color: inherit;
  padding: 0.25rem 0.1rem;
  letter-spacing: inherit;
  transition: color 0.2s;
}
.lang-switch button.is-active { color: var(--c-accent); }
.lang-switch button:hover { color: var(--c-paper); }

/* hamburger-less: hide nav center on mobile */
@media (max-width: 880px) {
  .nav { display: none; }
  .nav-row { grid-template-columns: 1fr auto; }
}

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding-top: clamp(3rem, 8vw, 6rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  overflow: hidden;
}
.hero::before {
  /* faint architectural grid lines */
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(0deg,  rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at top right, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at top right, black 30%, transparent 75%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 0.45fr 1.6fr 0.55fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
}

.hero-meta { padding-top: 1.5rem; }
.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin: 0 0 1.5rem;
}
.hero-dates {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0;
}
.date-block {
  display: flex;
  flex-direction: column;
  font-family: var(--f-display);
  line-height: 0.9;
}
.d-month {
  font-size: 0.72rem;
  font-family: var(--f-mono);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-mute);
  margin-bottom: 0.35rem;
}
.d-day {
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  font-weight: 300;
  font-variation-settings: "opsz" 144;
  color: var(--c-paper);
}
.date-sep {
  font-family: var(--f-display);
  font-size: 2rem;
  font-weight: 200;
  color: var(--c-accent);
  margin: 0.25rem 0;
  padding-left: 0.5rem;
}

.hero-headline h1 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 144;
}
.h1-line { display: block; }
.h1-l1 { color: var(--c-mute); }
.h1-l2 { color: var(--c-paper); }
.h1-l3 { color: var(--c-paper); }
.h1-l3 em {
  font-style: italic;
  font-weight: 500;
  color: var(--c-accent);
}

.hero-lede {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.65;
  color: var(--c-paper);
  opacity: 0.85;
  max-width: 56ch;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  font-family: var(--f-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}
.btn-primary {
  background: var(--c-accent);
  color: var(--c-ink);
  border-color: var(--c-accent);
}
.btn-primary:hover {
  background: var(--c-accent-2);
  border-color: var(--c-accent-2);
}
.btn-ghost {
  background: transparent;
  color: var(--c-paper);
  border-color: var(--c-rule);
}
.btn-ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.btn-block { display: flex; justify-content: center; width: 100%; }

.hero-side {
  padding: 1.5rem;
  border: 1px solid var(--c-rule);
  border-radius: 2px;
  background: rgba(255,255,255,0.02);
  font-size: 0.92rem;
}
.hs-label {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-mute);
  margin: 0;
}
.hs-label2, .hs-label3 { margin-top: 1.25rem; }
.hs-val + .hs-label { margin-top: 1.25rem; }
.hs-val {
  margin: 0.4rem 0 0;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--c-paper);
}

.hero-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: clamp(3rem, 6vw, 4.5rem) auto 0;
  max-width: var(--wrap);
  padding-inline: var(--gutter);
}
.hr-tick {
  width: 8px;
  height: 8px;
  background: var(--c-accent);
  flex-shrink: 0;
}
.hr-line {
  flex: 1;
  height: 1px;
  background: var(--c-rule);
}
.hr-text {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-meta { padding-top: 0; }
  .hero-dates { flex-direction: row; align-items: baseline; }
  .date-sep { padding-left: 0; }
  .hr-text { display: none; }
}

/* ════════════════════════════════════════════════════════════
   GENERIC BLOCK
   ════════════════════════════════════════════════════════════ */
.block {
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--c-rule);
  position: relative;
}
.block-program, .block-register {
  border-top-color: var(--c-rule-paper);
}

.block-num {
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
  color: var(--c-accent);
  font-feature-settings: "lnum";
  letter-spacing: -0.02em;
}
.block-eyebrow p {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-mute-2);
}
.block-program .block-eyebrow p,
.block-register .block-eyebrow p { color: #5d6b80; }

.block-head h2 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(1.75rem, 3.5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 100;
  max-width: 30ch;
}

/* ── about ─────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr;
  grid-template-rows: auto auto auto;
  gap: 1.25rem 2.5rem;
  align-items: start;
}
.about-grid .block-num    { grid-column: 1; grid-row: 1 / 3; }
.about-grid .block-eyebrow{ grid-column: 2; grid-row: 1; }
.about-grid .block-head   { grid-column: 2; grid-row: 2; }
.about-grid .about-body   { grid-column: 3; grid-row: 1 / 3; max-width: 56ch; }
.about-grid .pillars      { grid-column: 1 / -1; grid-row: 3; margin-top: 3rem; }

.about-body p {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--c-paper);
  opacity: 0.88;
}
.about-body strong { color: var(--c-accent); font-weight: 500; }

.pillars {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--c-rule);
  border: 1px solid var(--c-rule);
}
.pillars li {
  background: var(--c-ink);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
}
.pill-num {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--c-accent);
  margin-bottom: 1.5rem;
  font-feature-settings: "lnum";
}
.pillars h3 {
  margin: 0 0 0.6rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.15rem;
  line-height: 1.25;
  color: var(--c-paper);
}
.pillars p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--c-mute);
}

@media (max-width: 880px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-grid .block-num, .about-grid .block-eyebrow,
  .about-grid .block-head, .about-grid .about-body,
  .about-grid .pillars { grid-column: 1; grid-row: auto; }
  .pillars { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .pillars { grid-template-columns: 1fr; }
}

/* ── challenge ─────────────────────────────────────────────── */
.challenge-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
}
.challenge-grid .block-num     { grid-row: 1 / 3; }
.challenge-grid .block-eyebrow,
.challenge-grid .block-head    { grid-column: 2; }
.challenge-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.ch-card {
  position: relative;
  padding: 2rem 1.75rem;
  border: 1px solid var(--c-rule);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), transparent 60%);
}
.ch-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 2.5rem; height: 2px;
  background: var(--c-accent);
}
.ch-tag {
  margin: 0 0 1rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
}
.ch-card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.35rem;
  line-height: 1.2;
}
.ch-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--c-paper);
  opacity: 0.82;
}
@media (max-width: 880px) {
  .challenge-grid { grid-template-columns: 1fr; }
  .challenge-grid .block-eyebrow,
  .challenge-grid .block-head { grid-column: 1; }
  .challenge-row { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   PROGRAM (paper section)
   ════════════════════════════════════════════════════════════ */
.program-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
}
.program-grid .block-num     { color: var(--c-cinnabar); grid-row: 1 / 3; }
.program-grid .block-eyebrow,
.program-grid .block-head    { grid-column: 2; }
.block-program .block-head h2 { color: var(--c-ink); }

.events {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--c-rule-paper);
  margin-top: 2.5rem;
  border: 1px solid var(--c-rule-paper);
}
.event {
  background: var(--c-paper);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
}
.event-head {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--c-rule-paper);
}
.ev-date {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--f-display);
}
.ev-d {
  font-size: 3rem;
  font-weight: 300;
  font-variation-settings: "opsz" 144;
  color: var(--c-ink);
  line-height: 1;
}
.ev-m {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--c-cinnabar);
}
.ev-y {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #5d6b80;
}
.ev-when {
  margin: 0;
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #5d6b80;
}
.event-title {
  margin: 0 0 1.25rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.4rem;
  line-height: 1.25;
  color: var(--c-ink);
}
.event-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.event-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--c-ink);
}
.event-list li::before {
  content: '·';
  position: absolute;
  left: 0.4rem;
  top: -0.05rem;
  font-size: 1.6rem;
  color: var(--c-cinnabar);
  line-height: 1;
}

.format-row {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-rule-paper);
}
.format-label {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5d6b80;
  margin: 0;
}
.format-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.format-list li {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--c-ink);
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--c-rule-paper);
  background: var(--c-paper-2);
}

@media (max-width: 880px) {
  .program-grid { grid-template-columns: 1fr; }
  .program-grid .block-eyebrow,
  .program-grid .block-head { grid-column: 1; }
  .events { grid-template-columns: 1fr; }
  .event-head { flex-wrap: wrap; gap: 0.75rem; }
  .ev-when { margin-left: 0; }
}

/* ════════════════════════════════════════════════════════════
   SPEAKERS
   ════════════════════════════════════════════════════════════ */
.speakers-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
}
.speakers-grid .block-num      { grid-row: 1 / 3; }
.speakers-grid .block-eyebrow,
.speakers-grid .block-head     { grid-column: 2; }
.speakers-note {
  margin: 1rem 0 0;
  font-family: var(--f-body);
  font-size: 0.92rem;
  color: var(--c-mute);
  font-style: italic;
}
.speakers {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}
.speaker {
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--c-ink-3);
  border: 1px solid var(--c-rule);
  border-left: 3px solid var(--c-accent);
  transition: transform 0.25s ease, border-left-color 0.25s ease;
}
.speaker:hover {
  transform: translateY(-2px);
  border-left-color: var(--c-cinnabar);
}
.sp-perspective {
  margin: 0 0 1.25rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
}
.sp-name {
  margin: 0 0 0.35rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.35rem;
  line-height: 1.15;
  color: var(--c-paper);
}
.sp-role {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  line-height: 1.4;
  color: var(--c-mute);
}
.sp-status {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}
.status-confirmed { color: var(--c-accent); }
.status-pending   { color: var(--c-mute-2); }

@media (max-width: 880px) {
  .speakers-grid { grid-template-columns: 1fr; }
  .speakers-grid .block-eyebrow,
  .speakers-grid .block-head { grid-column: 1; }
  .speakers { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .speakers { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   PARTNERS
   ════════════════════════════════════════════════════════════ */
.partners-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
}
.partners-grid .block-num      { grid-row: 1 / 3; }
.partners-grid .block-eyebrow,
.partners-grid .block-head     { grid-column: 2; }
.partners-intro {
  grid-column: 1 / -1;
  margin: 2rem 0 0;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--c-paper);
  opacity: 0.85;
  max-width: 70ch;
}
.partner-row {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  background: var(--c-ink);
  border: 1px solid var(--c-rule);
  overflow: hidden;
  margin-top: 2.5rem;
}
.partner {
  flex: 1 1 0;
  min-width: 160px;
  position: relative;
  background: var(--c-ink);
  padding: 2rem 1.5rem;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  outline: 1px solid var(--c-rule);
}
.partner::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.partner:hover::before { transform: scaleX(1); }
.partner-optional { background: rgba(255,255,255,0.02); }
.partner-optional::before { background: var(--c-mute-2); }

.pt-role {
  margin: 0 0 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-mute);
}
.pt-name {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.15rem;
  line-height: 1.15;
  color: var(--c-paper);
}
.pt-status {
  margin: 1.5rem 0 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--c-accent);
}
.partner-optional .pt-status { color: var(--c-mute-2); }

.partners-disclaimer {
  grid-column: 1 / -1;
  margin: 1.5rem 0 0;
  font-size: 0.85rem;
  color: var(--c-mute-2);
  font-style: italic;
}

@media (max-width: 880px) {
  .partners-grid { grid-template-columns: 1fr; }
  .partners-grid .block-eyebrow,
  .partners-grid .block-head { grid-column: 1; }
  .partner { flex: 1 1 33%; min-width: 140px; }
}
@media (max-width: 560px) {
  .partner { flex: 1 1 50%; }
}

/* ════════════════════════════════════════════════════════════
   REGISTER (paper section)
   ════════════════════════════════════════════════════════════ */
.register-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
}
.register-grid .block-num      { color: var(--c-cinnabar); grid-row: 1 / 3; }
.register-grid .block-eyebrow,
.register-grid .block-head     { grid-column: 2; }
.block-register .block-head h2 { color: var(--c-ink); }

.register-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  margin-top: 2.5rem;
}

.reg-price {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--c-rule-paper);
}
.reg-price-amt {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-variation-settings: "opsz" 144;
  color: var(--c-ink);
  line-height: 1;
}
.reg-price-unit {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-cinnabar);
}
.reg-note {
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--c-ink);
  opacity: 0.85;
}
.reg-points {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.reg-points li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.7rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--c-ink);
}
.reg-points li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--c-cinnabar);
  font-family: var(--f-mono);
}

/* ── form ──────────────────────────────────────────────────── */
.reg-form {
  padding: 2.25rem;
  background: var(--c-paper-2);
  border: 1px solid var(--c-rule-paper);
}
.reg-form-title {
  margin: 0 0 0.35rem;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.4rem;
  color: var(--c-ink);
}
.reg-form-sub {
  margin: 0 0 1.75rem;
  font-size: 0.88rem;
  color: #5d6b80;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}
.field > span {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #5d6b80;
  margin-bottom: 0.4rem;
}
.field input,
.field textarea {
  font-family: var(--f-body);
  font-size: 0.95rem;
  padding: 0.7rem 0.85rem;
  background: var(--c-paper);
  border: 1px solid var(--c-rule-paper);
  color: var(--c-ink);
  border-radius: 2px;
  transition: border-color 0.2s;
  resize: vertical;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-cinnabar);
}
.field-dates {
  border: none;
  padding: 0;
  margin: 0.5rem 0 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.field-dates legend {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #5d6b80;
  margin-bottom: 0.6rem;
  padding: 0;
  float: left;
  width: 100%;
}
.check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--c-ink);
  cursor: pointer;
}
.check input { accent-color: var(--c-cinnabar); }

.form-msg {
  margin: 1rem 0 0;
  padding: 0.75rem 1rem;
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--c-ink);
  background: rgba(212, 151, 78, 0.18);
  border-left: 3px solid var(--c-accent);
}

.reg-form-fineprint {
  margin: 1.5rem 0 0;
  font-size: 0.78rem;
  color: #5d6b80;
  line-height: 1.5;
}

.promo-field { margin-bottom: 1.25rem; }
.promo-hint {
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
  color: #5d6b80;
  line-height: 1.45;
}

/* honeypot — visually + screen-reader hidden, but bots fill it */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 880px) {
  .register-grid { grid-template-columns: 1fr; }
  .register-grid .block-eyebrow,
  .register-grid .block-head { grid-column: 1; }
  .register-row { grid-template-columns: 1fr; gap: 2rem; }
  .field-row { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.foot {
  background: #0a1622;
  border-top: 1px solid var(--c-rule);
  padding: clamp(3rem, 6vw, 5rem) 0 1.5rem;
  color: var(--c-mute);
  font-size: 0.9rem;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.foot-brand { display: flex; flex-direction: column; }
.foot-brand-name {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.4rem;
  color: var(--c-paper);
}
.foot-brand-sub {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  margin-top: 0.4rem;
  color: var(--c-accent);
}
.foot-h {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-paper);
  margin: 0 0 0.85rem;
}
.foot-col p { margin: 0.25rem 0; }
.foot-col a { color: var(--c-mute); transition: color 0.2s; }
.foot-col a:hover { color: var(--c-accent); }

.foot-rule {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-rule);
}
.ascii {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  line-height: 1.4;
  color: var(--c-rule);
  margin: 0 0 1rem;
  overflow-x: auto;
  white-space: pre;
}
.foot-cr {
  margin: 0;
  font-size: 0.78rem;
  color: var(--c-mute-2);
}

@media (max-width: 880px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .ascii { font-size: 0.45rem; }
}

/* ════════════════════════════════════════════════════════════
   REVEAL ANIMATION — progressive enhancement
   (default state: fully visible. JS adds .js-reveal which hides
   them; then IntersectionObserver re-reveals as user scrolls.)
   ════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: no-preference) {
  .js-reveal .block {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .js-reveal .block.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  .hero-meta, .hero-headline, .hero-side {
    animation: fadeUp 0.8s ease backwards;
  }
  .hero-meta     { animation-delay: 0.05s; }
  .hero-headline { animation-delay: 0.20s; }
  .hero-side     { animation-delay: 0.35s; }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}

/* ════════════════════════════════════════════════════════════
   AGENDA TABLE (Event 1 detailed programme)
   ════════════════════════════════════════════════════════════ */
.agenda-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.25rem;
}
.agenda-row {
  border-top: 1px solid var(--c-rule-paper);
}
.agenda-row:first-child { border-top: none; }
.agenda-time {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--c-cinnabar);
  padding: 0.9rem 1.25rem 0.9rem 0;
  white-space: nowrap;
  vertical-align: top;
  width: 58px;
}
.agenda-item {
  display: flex;
  flex-direction: column;
  padding: 0.9rem 0;
}
.agenda-title {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--c-ink);
  line-height: 1.4;
}
.agenda-speaker {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: #5d6b80;
  margin-top: 0.3rem;
}
.agenda-speaker .sp-nm {
  color: var(--c-ink);
  font-weight: 600;
  font-style: normal;
}
.agenda-speaker-tbd { color: var(--c-mute-2); font-style: italic; }
.agenda-note {
  font-size: 0.78rem;
  color: var(--c-cinnabar);
  font-style: italic;
  margin-top: 0.15rem;
}
.agenda-break .agenda-title { font-weight: 400; color: #5d6b80; }
.agenda-pending .agenda-title { opacity: 0.75; }

/* wider left column for detailed event */
.events-split {
  grid-template-columns: 1.45fr 1fr;
}
@media (max-width: 880px) {
  .events-split { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   PARTNER LOGO STRIP
   ════════════════════════════════════════════════════════════ */
.partner-logos-strip {
  grid-column: 1 / -1;
  margin-top: 2.5rem;
  padding: 1.75rem 0;
  background: transparent;
  border-top: 1px solid var(--c-rule);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.5rem;
}
.partner-logos-label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5d6b80;
  margin: 0;
  flex-shrink: 0;
}
.partner-logo {
  height: 44px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.75;
  transition: opacity 0.2s;
}
.partner-logo:hover { opacity: 1; }
.partner-logo-color {
  filter: none;
  opacity: 1;
  background: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  height: 48px;
  max-width: 240px;
}
.partner-logo-color:hover { opacity: 1; }
.partner-logo-color {
  filter: none;
  opacity: 1;
  background: #fff;
  padding: 6px 10px;
  border-radius: 3px;
  max-width: 240px;
}
.partner-logo-color:hover { opacity: 1; }
.partner-logos-disclaimer {
  grid-column: 1 / -1;
  width: 100%;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: #5d6b80;
  font-style: italic;
}
@media (max-width: 560px) {
  .partner-logos-strip { gap: 1.5rem; padding: 1.25rem 0; }
  .partner-logo { height: 36px; }
}

/* partner card with logo — white strip bleeds to card edges */
.pt-logo-area {
  background: #fff;
  padding: 1.1rem 1.75rem;
  margin: -2rem -1.75rem 1.75rem;
  display: flex;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.pt-logo {
  height: 40px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
}

/* ════════════════════════════════════════════════════════════
   CALENDAR DOWNLOAD LINK
   ════════════════════════════════════════════════════════════ */
.ev-ics {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--c-cinnabar);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.ev-ics:hover { border-bottom-color: var(--c-cinnabar); }

/* ════════════════════════════════════════════════════════════
   VENUE
   ════════════════════════════════════════════════════════════ */
.venue-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
  align-items: start;
}
.venue-grid .block-num     { grid-row: 1 / 3; }
.venue-grid .block-eyebrow,
.venue-grid .block-head    { grid-column: 2; }
.venue-body {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
  align-items: start;
}
.venue-info {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.venue-map-btn {
  margin-top: 1.5rem;
  align-self: flex-start;
}
.venue-map {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 280px;
  border: 1px solid var(--c-rule);
  overflow: hidden;
}
.venue-map iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
.venue-map-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.4rem;
  padding: 2rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.02), transparent),
    var(--c-ink, #0d1b2a);
}
.venue-map-place {
  font-family: var(--f-display);
  font-size: 1.2rem;
  line-height: 1.25;
  color: var(--c-paper);
  margin: 0;
}
.venue-map-addr {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--c-mute);
  margin: 0 0 1.25rem;
}
.venue-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-mute);
  margin: 0 0 0.75rem;
}
.venue-address p:not(.venue-label) {
  margin: 0 0 1rem;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--c-paper);
  opacity: 0.88;
}
.venue-map-link {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.venue-map-link:hover { border-bottom-color: var(--c-accent); }
.venue-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.venue-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.7rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--c-paper);
  opacity: 0.88;
}
.venue-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--c-accent);
  font-family: var(--f-mono);
}
@media (max-width: 880px) {
  .venue-grid { grid-template-columns: 1fr; }
  .venue-grid .block-eyebrow,
  .venue-grid .block-head { grid-column: 1; }
  .venue-body { grid-template-columns: 1fr; gap: 2rem; }
  .venue-map { aspect-ratio: 16 / 9; min-height: 220px; }
}

/* ════════════════════════════════════════════════════════════
   FAQ
   ════════════════════════════════════════════════════════════ */
.faq-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem 2.5rem;
  align-items: start;
}
.faq-grid .block-num     { grid-row: 1 / 3; }
.faq-grid .block-eyebrow,
.faq-grid .block-head    { grid-column: 2; }
.faq-list {
  grid-column: 1 / -1;
  margin-top: 2.5rem;
  border-top: 1px solid var(--c-rule);
}
.faq-item {
  border-bottom: 1px solid var(--c-rule);
}
.faq-item summary { list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q {
  cursor: pointer;
  padding: 1.25rem 3rem 1.25rem 0;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--c-paper);
  position: relative;
  user-select: none;
  display: block;
}
.faq-q::after {
  content: '+';
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 1.2rem;
  color: var(--c-accent);
}
.faq-item[open] .faq-q::after { content: '\2212'; }
.faq-a { padding: 0 0 1.25rem; }
.faq-a p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--c-paper);
  opacity: 0.82;
  max-width: 70ch;
}
@media (max-width: 880px) {
  .faq-grid { grid-template-columns: 1fr; }
  .faq-grid .block-eyebrow,
  .faq-grid .block-head { grid-column: 1; }
}

/* ── selection ─────────────────────────────────────────────── */
::selection { background: var(--c-accent); color: var(--c-ink); }