/* ==========================================================================
   Gephyra Systems — gephyrasystems.com
   Visual system: engineering drawing / technical manual.

   The premise: Gephyra installs physical hardware on client premises. The
   visual language of that world is the drafting sheet — paper ground, rules,
   ticked margins, figure captions, a corner title block — not the dark SaaS
   dashboard that every AI company ships.

   The logo's quadratic arc is used structurally, not as a sticker: it is the
   site's primary curve.
   ========================================================================== */

:root {
  /* --- Ground: warm drafting paper, not dark mode --------------------- */
  --paper:      #E9E4D9;
  --paper-2:    #E1DBCC;
  --paper-3:    #D8D1BF;

  /* --- Ink ------------------------------------------------------------ */
  --ink:        #1C1A17;
  --ink-2:      #3A362F;
  --ink-3:      #5F594F;   /* 5.47:1 on paper, 5.02:1 on paper-2 */
  --ink-4:      #665F54;   /* 4.97:1 on paper, 4.57:1 on paper-2 */

  /* --- Accent: copper. Cable, PCB, printed rule ----------------------- */
  --copper:     #96451F;   /* 5.23:1 on paper; paper-on-copper 5.23:1 */
  --copper-2:   #7E3A18;
  --copper-w:   rgba(150, 69, 31, 0.10);

  /* --- Draughtsman's blue for technical annotations ------------------- */
  --blue:       #2F5C86;

  /* --- Rules ---------------------------------------------------------- */
  --rule:       rgba(28, 26, 23, 0.20);
  --rule-soft:  rgba(28, 26, 23, 0.11);
  --rule-hard:  rgba(28, 26, 23, 0.42);

  /* --- Type ----------------------------------------------------------- */
  --display: "Instrument Serif", "Iowan Old Style", "Palatino Linotype",
             Palatino, Georgia, serif;
  --sans: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell:      1180px;
  --gutter:     clamp(20px, 4.4vw, 46px);
  --section-y:  clamp(64px, 8.5vw, 116px);

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.58;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Faint drafting tooth: graph paper under the drawing. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(28,26,23,0.042) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28,26,23,0.042) 1px, transparent 1px);
  background-size: 26px 26px;
}

h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

::selection { background: var(--copper); color: var(--paper); }

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

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--paper);
  padding: 12px 18px; font: 500 13px/1 var(--mono);
}
.skip:focus { left: 0; }

/* --------------------------------------------------------------------------
   Shell and drawing frame
   -------------------------------------------------------------------------- */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

.frame-rule {
  position: fixed;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--rule-soft);
  z-index: 0;
  pointer-events: none;
}
.frame-rule.left  { left: max(18px, calc(50% - var(--shell) / 2)); }
.frame-rule.right { right: max(18px, calc(50% - var(--shell) / 2)); }
@media (max-width: 1080px) { .frame-rule { display: none; } }

/* --------------------------------------------------------------------------
   Type
   -------------------------------------------------------------------------- */

.display {
  font-family: var(--display);
  font-size: clamp(2.9rem, 7.2vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: -0.018em;
  font-weight: 400;
  text-wrap: balance;
}

.h2 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.1vw, 3.15rem);
  line-height: 1.06;
  letter-spacing: -0.012em;
  font-weight: 400;
  text-wrap: balance;
}

.h3 {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.32;
  letter-spacing: -0.008em;
  font-weight: 600;
}

.lede {
  font-size: clamp(1.04rem, 1.5vw, 1.2rem);
  line-height: 1.56;
  color: var(--ink-2);
  max-width: 60ch;
}

.small { font-size: 0.9375rem; line-height: 1.6; }
.body-muted { color: var(--ink-3); }

.microtype {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
}

/* --------------------------------------------------------------------------
   Figure captions — replaces the mono eyebrow
   A drafting sheet labels its parts: FIG. 3, SECTION A-A, DETAIL 2.
   -------------------------------------------------------------------------- */

.fig {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

.fig-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--copper);
  flex: none;
  font-weight: 500;
}

.fig-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.fig-rule { flex: 1; height: 1px; background: var(--rule-soft); margin-bottom: 3px; }

/* --------------------------------------------------------------------------
   Arc rule — the logo's curve as a structural divider
   -------------------------------------------------------------------------- */

.arc-rule { display: block; width: 100%; height: clamp(26px, 3.6vw, 42px); color: var(--rule); }
.arc-rule svg { width: 100%; height: 100%; display: block; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section { padding-block: var(--section-y); position: relative; }

/* --------------------------------------------------------------------------
   Mark
   -------------------------------------------------------------------------- */

.mark { color: var(--ink); }
.js .mark .arc {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: draw 1.2s var(--ease) 0.1s forwards;
}
.js .mark .node {
  opacity: 0;
  transform-origin: 32px 29px;
  animation: node-in 0.5s var(--ease) 1s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes node-in {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}

/* --------------------------------------------------------------------------
   Masthead
   -------------------------------------------------------------------------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.masthead[data-stuck="true"] { box-shadow: 0 1px 0 var(--rule-soft); }

.masthead-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; padding-block: 14px; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand-text { display: grid; gap: 2px; line-height: 1; }
.brand-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.brand-sub {
  font-family: var(--mono);
  font-size: 0.5625rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--copper);
}

/* Nav as a title-block row: cell dividers between items, not floating links */
.nav-links { display: flex; align-items: stretch; margin-left: auto; }
.nav-links a {
  display: flex;
  align-items: center;
  padding-inline: 22px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-left: 1px solid var(--rule-soft);
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transition: transform 0.24s var(--ease);
}
.nav-links a:hover { color: var(--ink); background: rgba(28,26,23,0.028); }
.nav-links a:hover::after { transform: scaleX(1); }

.masthead-cta {
  display: flex;
  align-items: center;
  padding-left: 18px;
  border-left: 1px solid var(--rule-soft);
  flex: none;
}

.menu-btn {
  display: none;
  width: 46px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--rule-soft);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
}
.menu-btn i { display: block; width: 17px; height: 2px; background: currentColor; position: relative; }
.menu-btn i::before, .menu-btn i::after {
  content: ""; position: absolute; left: 0;
  width: 17px; height: 2px; background: currentColor;
  transition: transform 0.22s var(--ease);
}
.menu-btn i::before { top: -6px; }
.menu-btn i::after  { top: 6px; }
.menu-btn[aria-expanded="true"] i { background: transparent; }
.menu-btn[aria-expanded="true"] i::before { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] i::after  { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu { display: none; border-top: 1px solid var(--rule-soft); background: var(--paper); }
.mobile-menu[data-open="true"] { display: block; }
.mobile-menu a {
  display: block;
  padding: 15px var(--gutter);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-bottom: 1px solid var(--rule-soft);
}
.mobile-menu a:hover { color: var(--ink); }

/* --------------------------------------------------------------------------
   Buttons — stamped plates
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 22px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.14s var(--ease);
}
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--copper); border-color: var(--copper); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-sm { height: 38px; padding: 0 16px; font-size: 0.6875rem; }
.btn:active { transform: translateY(1px); }
.btn .arrow { transition: transform 0.22s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   Hero — drawn as a title sheet
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding-block: clamp(44px, 6.4vw, 78px) clamp(40px, 5.4vw, 66px);
  border-bottom: 1px solid var(--rule);
}

/* Corner registration marks */
.hero::before, .hero::after {
  content: "";
  position: absolute;
  width: 13px; height: 13px;
  border: 1px solid var(--rule-hard);
  pointer-events: none;
}
.hero::before { top: 22px; left: var(--gutter); }
.hero::after  { top: 22px; right: var(--gutter); }

/* Side column removed; the hero is a single measured text column on a title sheet */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
}
.hero-copy { max-width: 46rem; }

.hero-mark {
  width: clamp(56px, 7vw, 76px);
  height: clamp(56px, 7vw, 76px);
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.hero .display { max-width: 15ch; }
.hero-lede { margin-top: clamp(18px, 2.2vw, 26px); color: var(--ink-2); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(24px, 3vw, 34px); }

/* --------------------------------------------------------------------------
   Ledger — the platform row as a ruled data band
   -------------------------------------------------------------------------- */

.ledger { border-bottom: 1px solid var(--rule); background: var(--paper-2); }

.ledger-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 12px;
  border-bottom: 1px solid var(--rule-soft);
}
.ledger-label {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  flex: none;
}
.ledger-note {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  margin-left: auto;
  flex: none;
}

.marquee {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 9%, #000 91%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 9%, #000 91%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee 78s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-group { display: flex; align-items: center; flex: none; }
.marquee-group li {
  display: flex;
  align-items: center;
  padding-inline: clamp(26px, 3.4vw, 48px);
  padding-block: 20px;
  border-left: 1px solid var(--rule-soft);
}
.marquee-group img {
  height: 30px;
  width: auto;
  /* Flat ink silhouette so the strip reads as one set, not seven palettes.
     Every file fills its own viewBox ~100%, so one height gives one ink
     height across all seven. */
  filter: brightness(0);
  opacity: 0.62;
  transition: opacity 0.2s var(--ease);
}
.marquee-group li:hover img { opacity: 1; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* --------------------------------------------------------------------------
   Statement
   -------------------------------------------------------------------------- */

.statement {
  display: grid;
  grid-template-columns: minmax(0, 0.34fr) minmax(0, 1fr);
  gap: clamp(24px, 4.5vw, 64px);
  align-items: start;
}
.statement-body { display: grid; gap: 18px; max-width: 68ch; }
.statement-body p { font-size: clamp(1rem, 1.35vw, 1.12rem); color: var(--ink-2); }
.statement-body .turn {
  color: var(--ink);
  font-weight: 600;
  border-top: 1px solid var(--rule);
  padding-top: 16px;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   Services — a schedule, not cards
   -------------------------------------------------------------------------- */

.schedule { border-top: 1px solid var(--rule); }
.sched-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 0.82fr) minmax(0, 1.28fr);
  gap: clamp(18px, 3vw, 44px);
  padding-block: clamp(24px, 3.2vw, 38px);
  border-bottom: 1px solid var(--rule-soft);
  align-items: start;
  transition: background 0.22s var(--ease);
}
.sched-row:hover { background: var(--copper-w); }
.sched-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--copper);
  padding-top: 5px;
}
.sched-title { font-size: 1.1875rem; font-weight: 600; line-height: 1.28; }
.sched-desc { color: var(--ink-3); font-size: 0.9375rem; line-height: 1.6; }

/* --------------------------------------------------------------------------
   Details — numbered list
   -------------------------------------------------------------------------- */

.details { margin-top: clamp(46px, 5.5vw, 76px); }
.detail-list { display: grid; border-top: 1px solid var(--rule); }
.detail-list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 32px);
  padding-block: 17px;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--ink-2);
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 92ch;
}
.detail-list .idx {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  padding-top: 5px;
}

/* --------------------------------------------------------------------------
   Stages — timeline on a spine with a copper node
   -------------------------------------------------------------------------- */

.stage {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: clamp(20px, 3.2vw, 46px);
  padding-block: clamp(26px, 3.4vw, 40px);
  border-top: 1px solid var(--rule-soft);
  position: relative;
}
.stage:last-child { border-bottom: 1px solid var(--rule-soft); }

.stage::before {
  content: "";
  position: absolute;
  left: 104px;
  top: clamp(32px, 4vw, 46px);
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--copper);
  z-index: 2;
}
.stage::after {
  content: "";
  position: absolute;
  left: 108px;
  top: clamp(32px, 4vw, 46px);
  bottom: calc(-1 * clamp(26px, 3.4vw, 40px));
  width: 1px;
  background: var(--rule);
}
.stage:last-child::after { display: none; }

.stage-when {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  padding-top: 7px;
  text-align: right;
  padding-right: 20px;
}
.stage-body { display: grid; gap: 9px; max-width: 76ch; }
.stage-body .h3 { font-size: 1.1875rem; }
.stage-body p { color: var(--ink-3); font-size: 0.9375rem; line-height: 1.6; }

/* --------------------------------------------------------------------------
   Principles — ruled specification list
   -------------------------------------------------------------------------- */

.principles { border-top: 1px solid var(--rule); }
.principle {
  display: grid;
  grid-template-columns: 30px minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(16px, 3vw, 44px);
  padding-block: clamp(20px, 2.8vw, 32px);
  border-bottom: 1px solid var(--rule-soft);
  align-items: start;
}
.principle .tick {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--copper);
  padding-top: 3px;
}
.principle .h3 { font-size: 1.0625rem; }
.principle p { color: var(--ink-3); font-size: 0.9375rem; line-height: 1.6; }

/* --------------------------------------------------------------------------
   Note — inset drawing callout
   -------------------------------------------------------------------------- */

.note {
  margin-top: clamp(34px, 4.4vw, 56px);
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: clamp(26px, 3.4vw, 42px);
  display: grid;
  gap: 14px;
  position: relative;
}
.note::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--rule-soft);
  pointer-events: none;
}
.note .h3 { font-size: 1.25rem; }
.note p { color: var(--ink-2); font-size: 0.9688rem; max-width: 74ch; }

/* --------------------------------------------------------------------------
   Audience
   -------------------------------------------------------------------------- */

.audience {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: start;
}
.audience-copy { display: grid; gap: 18px; }
.audience-copy .h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); max-width: 22ch; }
.audience-note {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.07em;
  line-height: 1.85;
  color: var(--ink-4);
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}
.audience-list { display: grid; border-top: 1px solid var(--rule); }
.audience-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-block: 15px;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--ink-2);
  font-size: 0.9375rem;
}
.audience-list .idx {
  font-family: var(--mono);
  font-size: 0.625rem;
  color: var(--ink-4);
  padding-top: 5px;
  letter-spacing: 0.08em;
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */

.contact { border-top: 1px solid var(--rule); padding-block: clamp(56px, 8vw, 104px); }
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
.contact-copy { display: grid; gap: 20px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 6px; }
.contact-mail {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--ink-2);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
}
.contact-mail:hover { color: var(--copper); border-color: var(--copper); }

/* Approval stamp block */
.stamp { border: 1px solid var(--rule); padding: 20px; display: grid; gap: 12px; background: var(--paper-2); }
.stamp-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
.stamp-row:last-child { border-bottom: 0; padding-bottom: 0; }
.stamp-term {
  font-family: var(--mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.stamp-val { font-size: 0.875rem; color: var(--ink-2); }

/* --------------------------------------------------------------------------
   Title block footer
   -------------------------------------------------------------------------- */

.title-block { border-top: 2px solid var(--ink); background: var(--paper-2); }
.tb-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 0.72fr));
  border-left: 1px solid var(--rule);
}
.tb-cell {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 18px 20px;
  display: grid;
  gap: 7px;
  align-content: start;
  min-height: 96px;
}
.tb-cell.wide { grid-column: 1 / -1; }
.tb-term {
  font-family: var(--mono);
  font-size: 0.5625rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.tb-val { font-size: 0.875rem; color: var(--ink-2); line-height: 1.5; }
.tb-val a { border-bottom: 1px solid var(--rule); }
.tb-val a:hover { color: var(--copper); border-color: var(--copper); }

.tb-brand { display: flex; align-items: center; gap: 13px; }
.tb-brand .mark { width: 26px; height: 26px; flex: none; }
.tb-brand-name {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.tb-links { display: flex; flex-wrap: wrap; gap: 20px; }
.tb-links a {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.tb-links a:hover { color: var(--copper); }

/* --------------------------------------------------------------------------
   Reveal
   -------------------------------------------------------------------------- */

.js .reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1000px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }
  .masthead-cta { display: none; }

  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero::after { display: none; }
  .statement { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .audience { grid-template-columns: 1fr; }

  .sched-row { grid-template-columns: 56px minmax(0, 1fr); row-gap: 12px; }
  .sched-desc { grid-column: 2; }

  .principle { grid-template-columns: 26px minmax(0, 1fr); row-gap: 10px; }
  .principle p { grid-column: 2; }

  .tb-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  body::before { background-size: 22px 22px; }
  .brand-sub { display: none; }
  .hero-actions .btn, .contact-actions .btn { width: 100%; }
  .stamp-row { grid-template-columns: 82px minmax(0, 1fr); gap: 12px; }

  .stage { grid-template-columns: minmax(0, 1fr); row-gap: 8px; padding-left: 26px; }
  .stage::before { left: 0; top: clamp(30px, 4vw, 42px); }
  .stage::after  { left: 4px; }
  .stage-when { text-align: left; padding-right: 0; padding-top: 0; }

  .detail-list li, .audience-list li { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; }

  .tb-grid { grid-template-columns: 1fr; }
  .tb-links { gap: 16px; }
}

/* --------------------------------------------------------------------------
   Motion preferences
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .mark .arc { stroke-dashoffset: 0; }
  .mark .node { opacity: 1; }
  .js .reveal { opacity: 1; transform: none; }

  .marquee { mask-image: none; -webkit-mask-image: none; }
  .marquee-track {
    animation: none !important;
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
  }
  .marquee-group { flex-wrap: wrap; justify-content: center; }
  .marquee-group[aria-hidden="true"] { display: none; }
  .marquee-group li:nth-child(n+8) { display: none; }
  .marquee-group img { opacity: 0.75; }
}