/* Graph Week in Jakarta 2026
   Palette: midnight (#060D1F) — the Jakarta night sky on the flyer
            cyan (#3ED8F7)    — edges, the live signal
            gold (#F2B01E)    — the masterclass, the scarce thing
   Type:    Archivo (expanded display) / IBM Plex Sans (body) / IBM Plex Mono (schedule data)
   Idea:    the agenda is a graph traversal — a spine of edges, one node per session. */

:root {
  --ink: #060d1f;
  --ink-2: #0a1730;
  --ink-3: #0e2140;
  --line: rgba(126, 168, 220, 0.16);
  --line-2: rgba(126, 168, 220, 0.3);
  --cyan: #3ed8f7;
  --cyan-2: #10a8d6;
  --gold: #f2b01e;
  --paper: #eaf1fb;
  --muted: #90a4c6;
  --muted-2: #6d80a2;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1180px;
  --gut: clamp(1.15rem, 4vw, 2.5rem);
  --sect: clamp(4rem, 9vw, 7.5rem);
  --r: 4px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.08rem);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #9aeaff; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap { width: min(var(--wrap), 100% - var(--gut) * 2); margin-inline: auto; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--cyan); color: var(--ink); padding: 0.7rem 1.2rem; font-weight: 600;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------------------------------------------------------------- typography */

h1, h2, h3, h4 { font-family: var(--display); font-weight: 700; line-height: 1.05; margin: 0; }

.h2 {
  font-size: clamp(1.85rem, 1.2rem + 2.6vw, 3.15rem);
  font-variation-settings: "wdth" 112;
  letter-spacing: -0.018em;
  margin: 0 0 0.7rem;
  text-wrap: balance;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 0.9rem;
  display: flex; align-items: center; gap: 0.7rem;
}
.eyebrow::after {
  content: ""; flex: 0 0 auto; width: 42px; height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.section-lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1rem, 0.96rem + 0.25vw, 1.15rem);
  margin: 0 0 2.6rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.16em 0.5em;
  border: 1px solid currentColor;
  border-radius: 999px;
  vertical-align: 0.18em;
  white-space: nowrap;
}
.tag-invited { color: var(--gold); opacity: 0.85; }

/* ---------------------------------------------------------------------- nav */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 13, 31, 0.82);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 1.5rem; height: 68px; }

.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--paper); margin-right: auto; }
.brand-mark { width: 30px; height: 30px; flex: 0 0 auto; }
.brand-mark path { stroke: var(--cyan-2); stroke-width: 1; fill: none; opacity: 0.75; }
.brand-mark circle { fill: var(--cyan-2); opacity: 0.8; }
.brand-mark .brand-core { fill: var(--cyan); opacity: 1; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text b { font-family: var(--display); font-weight: 700; font-variation-settings: "wdth" 118; font-size: 0.95rem; letter-spacing: 0.01em; }
.brand-text i { font-family: var(--mono); font-style: normal; font-size: 0.63rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-2); }

.nav-links { display: flex; gap: 1.6rem; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 500;
  padding: 0.35rem 0; border-bottom: 1px solid transparent;
}
.nav-links a:hover { color: var(--paper); border-bottom-color: var(--cyan); }

/* Below the desktop breakpoint the links become a scrollable strip under the
   brand — no hamburger, nothing hidden behind a tap. */
@media (max-width: 900px) {
  html { scroll-padding-top: 116px; }
  .nav-inner { flex-wrap: wrap; height: auto; padding-block: 0.55rem; gap: 0.9rem; }
  .nav-links {
    order: 3; width: 100%; gap: 1.25rem; overflow-x: auto; scrollbar-width: none;
    border-top: 1px solid var(--line); padding-top: 0.45rem;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { white-space: nowrap; font-size: 0.84rem; padding-bottom: 0.2rem; }
}
@media (max-width: 520px) {
  .brand-mark { width: 26px; height: 26px; }
  .nav-cta { padding: 0.5rem 0.85rem; font-size: 0.8rem; }
}

/* ------------------------------------------------------------------ buttons */

.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--body); font-weight: 600; font-size: 0.94rem;
  padding: 0.82rem 1.5rem;
  border-radius: var(--r);
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.85rem; }

.btn-cyan { background: var(--cyan); color: #041020; box-shadow: 0 0 0 0 rgba(62, 216, 247, 0.5); }
.btn-cyan:hover { background: #6ce4ff; color: #041020; box-shadow: 0 10px 30px -12px rgba(62, 216, 247, 0.8); }

.btn-gold { background: var(--gold); color: #201603; }
.btn-gold:hover { background: #ffc846; color: #201603; box-shadow: 0 10px 30px -12px rgba(242, 176, 30, 0.8); }

.btn-ghost { border-color: var(--line-2); color: var(--paper); background: transparent; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(62, 216, 247, 0.06); }

/* --------------------------------------------------------------------- hero */

.hero { position: relative; padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5.5rem); overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset: auto 0 0; height: 1px; background: var(--line);
}
.hero-graph { position: absolute; inset: 0; z-index: 0; opacity: 0.9; mask-image: linear-gradient(180deg, #000 55%, transparent); }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(90% 75% at 8% 42%, rgba(6, 13, 31, 0.94) 0%, rgba(6, 13, 31, 0.72) 38%, transparent 72%);
}
.hero-graph svg { width: 100%; height: 100%; display: block; }
.hero-graph .edges line { stroke: var(--cyan); stroke-width: 1; opacity: 0.16; }
.hero-graph .nodes circle { fill: var(--cyan); opacity: 0.5; }
.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted); display: flex; align-items: center; gap: 0.7rem; margin: 0 0 1.6rem;
}
.hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(62, 216, 247, 0.16); }

.hero-title {
  font-size: clamp(2.9rem, 1.2rem + 8.2vw, 7.2rem);
  font-weight: 800;
  font-variation-settings: "wdth" 120;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  margin: 0 0 1.4rem;
}
.hero-title span { display: block; }
.hero-title em {
  display: block; font-style: normal; color: var(--cyan);
  font-variation-settings: "wdth" 106; font-weight: 600;
  letter-spacing: -0.02em;
}
.hero-title-sub { font-size: clamp(2.1rem, 1rem + 5.4vw, 4.6rem); text-transform: none; }
.hero-title-sub em { font-size: 0.62em; letter-spacing: -0.01em; }

.hero-lede { max-width: 60ch; color: var(--muted); font-size: clamp(1.02rem, 0.96rem + 0.4vw, 1.22rem); margin: 0 0 2.2rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-bottom: clamp(2.5rem, 6vw, 4rem); }

.hero-facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px; margin: 0; background: var(--line);
  border: 1px solid var(--line);
}
.hero-facts > div { background: var(--ink); padding: 1.1rem 1.2rem; }
.hero-facts dt {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted-2); margin-bottom: 0.35rem;
}
.hero-facts dd { margin: 0; font-weight: 600; font-size: 0.98rem; }

.hero-sub { padding-bottom: clamp(2.5rem, 6vw, 4rem); }

/* -------------------------------------------------------------------- strip */

.strip { border-bottom: 1px solid var(--line); padding: 2.2rem 0; background: var(--ink-2); }
.strip-label {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--muted-2); margin: 0 0 1rem;
}
.strip-list {
  list-style: none; margin: 0 0 0.9rem; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.55rem 1.9rem;
  font-family: var(--display); font-weight: 600; font-variation-settings: "wdth" 108;
  font-size: clamp(0.95rem, 0.9rem + 0.4vw, 1.22rem); color: #c3d3ea;
}
.strip-list li { position: relative; }
.strip-list li + li::before {
  content: ""; position: absolute; left: -1rem; top: 50%; width: 3px; height: 3px;
  border-radius: 50%; background: var(--cyan-2);
}
.strip-note { margin: 0; font-size: 0.8rem; color: var(--muted-2); }

/* ----------------------------------------------------------------- sections */

.section { padding: var(--sect) 0; }
.section-alt { background: var(--ink-2); border-block: 1px solid var(--line); }
.section-cta { background: linear-gradient(180deg, var(--ink-3), var(--ink)); border-top: 1px solid var(--line-2); }

/* ------------------------------------------------------------------ tickets */

.tickets { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.2rem; }

.ticket {
  position: relative; display: flex; flex-direction: column;
  padding: clamp(1.6rem, 3vw, 2.3rem);
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: var(--r);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.ticket::before {
  content: ""; position: absolute; inset: -1px -1px auto; height: 2px;
}
.ticket-cyan::before { background: linear-gradient(90deg, var(--cyan), transparent 75%); }
.ticket-gold::before { background: linear-gradient(90deg, var(--gold), transparent 75%); }
.ticket:hover { transform: translateY(-3px); }
.ticket-cyan:hover { border-color: rgba(62, 216, 247, 0.45); }
.ticket-gold:hover { border-color: rgba(242, 176, 30, 0.45); }

.ticket-kicker { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-2); margin: 0 0 0.8rem; }
.ticket-name { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.85rem); font-variation-settings: "wdth" 108; letter-spacing: -0.015em; margin-bottom: 0.7rem; }
.ticket-lede { color: var(--muted); margin: 0 0 1.3rem; font-size: 0.98rem; }
.ticket-points { list-style: none; margin: 0 0 1.8rem; padding: 0; display: grid; gap: 0.7rem; }
.ticket-points li { position: relative; padding-left: 1.5rem; font-size: 0.93rem; color: #cdd9ec; }
.ticket-points li::before {
  content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px;
  border: 1px solid var(--cyan); border-radius: 50%;
}
.ticket-gold .ticket-points li::before { border-color: var(--gold); }

.ticket-foot { margin-top: auto; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.ticket-price { font-family: var(--display); font-weight: 700; font-variation-settings: "wdth" 112; font-size: clamp(2rem, 1.4rem + 2vw, 2.9rem); letter-spacing: -0.03em; margin: 0 0 0.2rem; line-height: 1; }
.ticket-price .cur { font-family: var(--mono); font-size: 0.34em; letter-spacing: 0.14em; vertical-align: 0.9em; color: var(--muted); margin-right: 0.35em; }
.ticket-price .unit { display: block; font-family: var(--mono); font-size: 0.24em; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-2); margin-top: 0.7em; }
.ticket-meta { font-size: 0.84rem; color: var(--muted); margin: 0.7rem 0 1.4rem; }

/* ------------------------------------------------- agenda: tabs + traversal */

.tabs {
  display: flex; gap: 1px; margin-bottom: 2.2rem;
  background: var(--line); border: 1px solid var(--line);
  overflow-x: auto; scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex: 1 1 0; min-width: 132px;
  display: flex; flex-direction: column; gap: 0.16rem;
  padding: 0.9rem 1.1rem;
  background: var(--ink); border: 0; cursor: pointer;
  text-align: left; color: var(--muted); font-family: var(--body);
  border-bottom: 2px solid transparent;
  transition: background 0.18s ease, color 0.18s ease;
}
.tab:hover { background: var(--ink-3); color: var(--paper); }
.tab-day { font-family: var(--display); font-weight: 700; font-variation-settings: "wdth" 114; font-size: 1.02rem; color: inherit; }
.tab-date { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; }
.tab-track { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-2); }
.tab.is-active { background: var(--ink-3); color: var(--paper); border-bottom-color: var(--cyan); }
.tab.is-active .tab-track { color: var(--cyan); }

.day-head { margin-bottom: 2rem; }
.day-kicker { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.1em; color: var(--muted); margin: 0 0 0.7rem; display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }
.pill {
  font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.25em 0.7em; border-radius: 999px; font-weight: 600;
}
.pill-workshop { background: rgba(62, 216, 247, 0.14); color: var(--cyan); }
.pill-masterclass { background: rgba(242, 176, 30, 0.14); color: var(--gold); }
.day-theme { font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.9rem); font-variation-settings: "wdth" 106; letter-spacing: -0.015em; margin-bottom: 0.5rem; }
.day-note { color: var(--muted-2); font-size: 0.88rem; margin: 0; font-family: var(--mono); }

/* the traversal: one spine, one node per session */
.rows { list-style: none; margin: 0; padding: 0; }

.row {
  display: grid;
  grid-template-columns: 118px 26px minmax(0, 1fr);
  gap: 0 1.1rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}
.row:last-child { border-bottom: 1px solid var(--line); }

.row-time {
  font-family: var(--mono); font-size: 0.86rem; color: var(--paper);
  margin: 0; display: flex; gap: 0.3rem; white-space: nowrap;
  font-variant-numeric: tabular-nums; padding-top: 0.12rem;
}
.row-time span { color: var(--muted-2); }

.row-node { position: relative; }
.row-node::before {
  content: ""; position: absolute; left: 50%; top: 0.55rem; width: 11px; height: 11px;
  transform: translateX(-50%); border-radius: 50%;
  background: var(--ink); border: 2px solid var(--cyan);
  z-index: 1; transition: box-shadow 0.2s ease, background 0.2s ease;
}
.row-node::after {
  content: ""; position: absolute; left: 50%; top: 0.55rem; bottom: -1.15rem; width: 1px;
  transform: translateX(-50%); background: var(--line-2);
}
.row:last-child .row-node::after { display: none; }
.row:hover .row-node::before { background: var(--cyan); box-shadow: 0 0 0 5px rgba(62, 216, 247, 0.14); }

.row-break .row-node::before,
.row-admin .row-node::before { width: 7px; height: 7px; border-color: var(--muted-2); border-width: 1px; top: 0.72rem; }
.row-break .row-title, .row-admin .row-title { font-weight: 500; color: var(--muted); }
.row-break .row-time, .row-admin .row-time { color: var(--muted-2); }
.row-break { padding-block: 0.72rem; }

.row-body { min-width: 0; }
.row-title {
  font-family: var(--display); font-weight: 600; font-variation-settings: "wdth" 104;
  font-size: clamp(1rem, 0.95rem + 0.35vw, 1.16rem); line-height: 1.3; letter-spacing: -0.005em;
  margin: 0; text-wrap: pretty;
}
.row-desc { margin: 0.45rem 0 0; color: var(--muted); font-size: 0.9rem; max-width: 70ch; }

.row-who { list-style: none; margin: 0.7rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.who {
  display: inline-flex; align-items: baseline; gap: 0.45rem; flex-wrap: wrap;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.28rem 0.85rem;
  background: rgba(126, 168, 220, 0.05);
}
.who-name { font-weight: 600; font-size: 0.85rem; }
.who-org { font-size: 0.76rem; color: var(--muted-2); }

/* masterclass days get the gold node */
#day-3 .row-node::before, #day-4 .row-node::before { border-color: var(--gold); }
#day-3 .row:hover .row-node::before, #day-4 .row:hover .row-node::before { background: var(--gold); box-shadow: 0 0 0 5px rgba(242, 176, 30, 0.14); }
#day-3 .row-break .row-node::before, #day-3 .row-admin .row-node::before,
#day-4 .row-break .row-node::before, #day-4 .row-admin .row-node::before { border-color: var(--muted-2); }

@media (max-width: 680px) {
  .row { grid-template-columns: 18px minmax(0, 1fr); gap: 0 0.85rem; }
  .row-time { grid-column: 2; grid-row: 1; font-size: 0.78rem; color: var(--cyan); padding-top: 0; margin-bottom: 0.3rem; }
  .row-node { grid-column: 1; grid-row: 1 / span 2; }
  .row-node::before { top: 0.28rem; }
  .row-node::after { top: 0.28rem; }
  .row-body { grid-column: 2; grid-row: 2; }
  #day-3 .row-time, #day-4 .row-time { color: var(--gold); }
}

/* ----------------------------------------------------------------- speakers */

.speakers { display: grid; grid-template-columns: repeat(auto-fill, minmax(285px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.speaker { background: var(--ink); padding: 1.7rem 1.5rem; transition: background 0.2s ease; }
.speaker:hover { background: var(--ink-2); }
.speaker-mark {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.1em; color: var(--cyan);
  border: 1px solid var(--line-2); width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: 50%; margin: 0 0 1.1rem;
}
.speaker-name { font-size: 1.15rem; font-variation-settings: "wdth" 106; letter-spacing: -0.01em; margin-bottom: 0.3rem; }
.speaker-role { font-family: var(--mono); font-size: 0.76rem; color: var(--cyan); margin: 0 0 0.8rem; line-height: 1.45; }
.speaker-bio { color: var(--muted); font-size: 0.9rem; margin: 0 0 1.1rem; }
.speaker-when { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-2); margin: 0; }

/* ------------------------------------------------------------------- topics */

.topics-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .topics-grid { grid-template-columns: 1fr; } }

.topics { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.topic { background: var(--ink-2); padding: 1.15rem 0; }
.topic h3 { font-size: 1.05rem; font-variation-settings: "wdth" 104; margin-bottom: 0.25rem; }
.topic p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.who-box { border: 1px solid var(--line); padding: 1.7rem 1.5rem; background: var(--ink); border-radius: var(--r); }
.who-box h3 { font-size: 1.1rem; margin-bottom: 1rem; font-variation-settings: "wdth" 106; }
.who-list { list-style: none; margin: 0 0 1.3rem; padding: 0; display: grid; gap: 0.6rem; }
.who-list li { position: relative; padding-left: 1.4rem; font-size: 0.9rem; color: #cdd9ec; }
.who-list li::before {
  content: "→"; position: absolute; left: 0; color: var(--cyan); font-size: 0.85rem;
}
.who-note { margin: 0; font-size: 0.83rem; color: var(--muted-2); border-top: 1px solid var(--line); padding-top: 1rem; }

/* -------------------------------------------------------------------- venue */

.venue-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .venue-grid { grid-template-columns: 1fr; } }

.venue-facts { list-style: none; margin: 0 0 2rem; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.venue-facts li {
  display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; padding: 0.85rem 0;
  border-bottom: 1px solid var(--line); font-size: 0.94rem;
}
.venue-facts span {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted-2); flex: 0 0 170px;
}

.flyer { margin: 0; }
.flyer img { border: 1px solid var(--line); border-radius: var(--r); }
.flyer figcaption { font-family: var(--mono); font-size: 0.72rem; color: var(--muted-2); margin-top: 0.8rem; }

/* ----------------------------------------------------------------- register */

.register-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.reg-card {
  display: flex; flex-direction: column; gap: 0.35rem;
  padding: 1.4rem 1.4rem 1.5rem;
  border: 1px solid var(--line-2); border-radius: var(--r);
  background: rgba(6, 13, 31, 0.5); text-decoration: none; color: var(--paper);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.reg-card:hover { border-color: var(--cyan); background: rgba(62, 216, 247, 0.07); transform: translateY(-2px); color: var(--paper); }
.reg-kind { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--cyan); }
.reg-value { font-family: var(--display); font-weight: 600; font-variation-settings: "wdth" 104; font-size: 1.05rem; word-break: break-word; }
.reg-hint { font-size: 0.8rem; color: var(--muted-2); }

/* ---------------------------------------------------------------------- faq */

.faq { border-top: 1px solid var(--line); max-width: 880px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 1.15rem 2.5rem 1.15rem 0; position: relative;
  font-family: var(--display); font-weight: 600; font-variation-settings: "wdth" 104;
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.12rem);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 0.4rem; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); color: var(--cyan); font-size: 1.3rem; line-height: 1;
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item summary:hover { color: var(--cyan); }
.faq-answer { padding: 0 2.5rem 1.4rem 0; }
.faq-answer p { margin: 0; color: var(--muted); }

/* ------------------------------------------------------------------- footer */

.foot { border-top: 1px solid var(--line); background: var(--ink-2); padding: clamp(2.8rem, 6vw, 4.5rem) 0 0; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr)); gap: 2.2rem; padding-bottom: 3rem; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-grid > div:first-child { grid-column: 1 / -1; } }

.foot-brand { font-family: var(--display); font-weight: 800; font-variation-settings: "wdth" 118; text-transform: uppercase; font-size: 1.4rem; line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 1rem; }
.foot-brand span { color: var(--cyan); }
.foot-line { color: var(--muted-2); font-size: 0.86rem; margin: 0 0 0.6rem; max-width: 44ch; }
.foot-h { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin: 0 0 1rem; font-weight: 500; }
.foot-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.foot-list a { color: var(--paper); text-decoration: none; font-size: 0.9rem; }
.foot-list a:hover { color: var(--cyan); }

.foot-bar {
  border-top: 1px solid var(--line); padding: 1.3rem 0; display: flex; flex-wrap: wrap;
  gap: 0.8rem 2rem; justify-content: space-between;
}
.foot-bar p { margin: 0; font-size: 0.78rem; color: var(--muted-2); }
.foot-bar a { color: var(--muted-2); }

/* --------------------------------------------------------------- motion, js */

.js .reveal { opacity: 0; transform: translateY(12px); }
.js .reveal.in { opacity: 1; transform: none; transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }

.no-js .tabs { display: none; }
.no-js .day[hidden] { display: block; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media print {
  .nav, .hero-graph, .hero-actions, .foot-bar, .btn { display: none; }
  .js .reveal { opacity: 1 !important; transform: none !important; }
  body { background: #fff; color: #000; }
  .day[hidden] { display: block !important; }
  .tabs { display: none; }
}