:root {
  --void: #0d0f17;
  --midnight: #171a24;
  --slab: #212430;
  --brick: #2e303f;
  --mortar: #3d4052;
  --ivory: #f7f7fc;
  --ivory-dim: #c7c9db;
  --ivory-soft: #8c90a8;
  --stud: #ffc72e;
  --stud-deep: #d9a012;
  --magenta: #ff4f9e;
  --neon: #26f0bf;
  --lime: #b8f247;
  --violet: #996bff;
  --sky: #5cc9ff;
  --coral: #ff705c;
  --hairline: rgba(255, 255, 255, 0.09);
  --glass: rgba(255, 255, 255, 0.04);
  --shadow: rgba(0, 0, 0, 0.5);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --rail-w: 3.25rem;
  --page-pad: clamp(1.25rem, 4vw, 2.5rem);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 1.5rem;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ivory);
  background: var(--void);
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(255, 199, 46, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(255, 79, 158, 0.06), transparent);
}

img { max-width: 100%; display: block; }

a {
  color: var(--stud);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--neon); }

/* ── Right margin dot nav ── */
.rail {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1rem 0.85rem;
}

.rail__dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  text-decoration: none;
}

.rail__dot span {
  display: block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--mortar);
  border: 1px solid var(--hairline);
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.rail__dot:hover span,
.rail__dot--active span {
  background: var(--stud);
  transform: scale(1.35);
  box-shadow: 0 0 12px rgba(255, 199, 46, 0.45);
}

/* ── Page shell ── */
.page {
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.5rem var(--page-pad) 4rem;
  padding-right: calc(var(--page-pad) + var(--rail-w));
}

/* ── Hero: asymmetric split ── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  min-height: min(88vh, 52rem);
  padding: 2rem 0 4rem;
}

.hero__kicker {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stud);
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero__lead {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 600;
  color: var(--ivory-dim);
}

.hero__tagline {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--ivory-soft);
}

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  margin: 2rem 0 0;
  padding: 0;
}

.hero__facts div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.hero__facts dt {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--stud);
  line-height: 1;
}

.hero__facts dd {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ivory-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero visual */
.hero__visual {
  position: relative;
  min-height: 22rem;
}

.hero__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 1.25rem;
  opacity: 0.42;
  mix-blend-mode: luminosity;
}

.stud-plate {
  position: absolute;
  inset: -8% -4%;
  border-radius: 1.5rem;
  background:
    radial-gradient(circle at 12px 12px, rgba(255, 199, 46, 0.18) 5px, transparent 6px),
    linear-gradient(145deg, rgba(23, 26, 36, 0.75), rgba(33, 36, 48, 0.55));
  background-size: 24px 24px, 100% 100%;
  border: 1px solid var(--hairline);
  opacity: 0.85;
  pointer-events: none;
}

.vault-stack {
  position: relative;
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
}

.vault-card {
  padding: 1rem 1.15rem;
  border-radius: 1rem;
  background: rgba(33, 36, 48, 0.92);
  border: 1px solid var(--hairline);
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 40px var(--shadow);
}

.vault-card--shelf { margin-right: 2.5rem; border-left: 3px solid var(--stud); }
.vault-card--ledger { margin-left: 1.5rem; border-left: 3px solid var(--magenta); }
.vault-card--yard { margin-right: 1rem; border-left: 3px solid var(--neon); }

.vault-card__label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ivory-soft);
  margin-bottom: 0.65rem;
}

.vault-card__rows {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.vault-card__rows span {
  display: block;
  height: 0.55rem;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--tint), transparent 85%);
  opacity: 0.75;
}

.vault-card__rows span:nth-child(1) { width: 92%; }
.vault-card__rows span:nth-child(2) { width: 78%; }
.vault-card__rows span:nth-child(3) { width: 64%; }

.vault-card__chart {
  display: flex;
  align-items: flex-end;
  gap: 0.35rem;
  height: 2.5rem;
}

.vault-card__chart span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: var(--magenta);
  opacity: 0.7;
}

.vault-card__chart span:nth-child(1) { height: 45%; background: var(--stud); }
.vault-card__chart span:nth-child(2) { height: 70%; }
.vault-card__chart span:nth-child(3) { height: 55%; background: var(--neon); }
.vault-card__chart span:nth-child(4) { height: 90%; }

.vault-card__roi {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--neon);
}

.vault-card__bays {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.vault-card__bays span {
  height: 2rem;
  border-radius: 6px;
  border: 1px dashed var(--mortar);
  background: var(--glass);
}

/* ── Sections ── */
.section {
  padding: 4.5rem 0;
}

.section__intro {
  max-width: 32rem;
  margin-bottom: 3rem;
}

.section__intro--right {
  margin-left: auto;
  text-align: right;
}

.section__intro h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section__intro p {
  margin: 0;
  color: var(--ivory-soft);
}

/* ── Zigzag features ── */
.zigzag {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.zigzag__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.75rem 2rem;
  align-items: start;
  padding: 2.25rem 0;
  border-top: 1px solid var(--hairline);
}

.zigzag__row:last-child {
  border-bottom: 1px solid var(--hairline);
}

.zigzag__row--flip {
  grid-template-columns: 1fr auto;
}

.zigzag__row--flip .zigzag__glyph {
  order: 2;
}

.zigzag__row--flip .zigzag__body {
  order: 1;
  text-align: right;
}

.zigzag__glyph {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  border-radius: 1rem;
  background: rgba(255, 199, 46, 0.12);
  color: var(--stud);
  border: 1px solid rgba(255, 199, 46, 0.25);
}

.zigzag__glyph--magenta { background: rgba(255, 79, 158, 0.12); color: var(--magenta); border-color: rgba(255, 79, 158, 0.25); }
.zigzag__glyph--neon { background: rgba(38, 240, 191, 0.1); color: var(--neon); border-color: rgba(38, 240, 191, 0.25); }
.zigzag__glyph--violet { background: rgba(153, 107, 255, 0.12); color: var(--violet); border-color: rgba(153, 107, 255, 0.25); }
.zigzag__glyph--sky { background: rgba(92, 201, 255, 0.12); color: var(--sky); border-color: rgba(92, 201, 255, 0.25); }

.zigzag__body h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

.zigzag__body p {
  margin: 0;
  max-width: 36rem;
  color: var(--ivory-soft);
}

.zigzag__row--flip .zigzag__body p {
  margin-left: auto;
}

/* ── Device pair ── */
.device-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
}

.device-pair__item {
  margin: 0;
}

.device-pair__item figcaption {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--ivory-soft);
  text-align: center;
}

.phone {
  position: relative;
  width: min(100%, 17rem);
  margin: 0 auto;
  aspect-ratio: 9 / 19.5;
  border-radius: 2.2rem;
  padding: 0.65rem;
  background: linear-gradient(160deg, #3a3d4a, #1a1c24);
  border: 2px solid var(--mortar);
  box-shadow:
    0 24px 60px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.phone__island {
  position: absolute;
  top: 0.85rem;
  left: 50%;
  transform: translateX(-50%);
  width: 28%;
  height: 1.1rem;
  border-radius: 999px;
  background: #0a0b0f;
  z-index: 2;
}

.phone__screen {
  width: 100%;
  height: 100%;
  border-radius: 1.7rem;
  overflow: hidden;
  background: var(--void);
}

.ui {
  height: 100%;
  padding: 2.5rem 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ui__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
}

.ui__pill {
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--slab);
  color: var(--stud);
  font-size: 0.65rem;
}

.ui__search {
  height: 1.6rem;
  border-radius: 8px;
  background: var(--slab);
  border: 1px solid var(--hairline);
}

.ui__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  flex: 1;
}

.ui__tile {
  padding: 0.5rem;
  border-radius: 10px;
  background: var(--slab);
  border-left: 2px solid var(--c);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.ui__tile span {
  font-size: 0.58rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ivory);
}

.ui__tile small {
  font-size: 0.5rem;
  color: var(--ivory-soft);
}

.ui__stat {
  padding: 0.85rem;
  border-radius: 12px;
  background: var(--slab);
  border: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.ui__stat-label {
  font-size: 0.6rem;
  color: var(--ivory-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ui__stat-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--stud);
}

.ui__stat-delta {
  font-size: 0.6rem;
  color: var(--neon);
}

.ui__milestones {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.ui__milestones span {
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  background: var(--slab);
  font-size: 0.58rem;
  color: var(--ivory-dim);
  border-left: 2px solid var(--violet);
}

/* ── Legal ── */
.legal-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding: 3rem 0 1rem;
  border-top: 1px solid var(--hairline);
}

.legal {
  background: var(--glass);
  border: 1px solid var(--hairline);
  border-radius: 1.25rem;
  padding: 1.5rem 1.75rem;
}

.legal--privacy summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  list-style: none;
}

.legal--privacy summary::-webkit-details-marker { display: none; }

.legal--privacy summary::after {
  content: " +";
  color: var(--stud);
  font-weight: 400;
}

.legal--privacy[open] summary::after { content: " −"; }

.legal__content {
  margin-top: 1.25rem;
  font-size: 0.95rem;
  color: var(--ivory-soft);
}

.legal__content p { margin: 0 0 1rem; }

.legal--support h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}

.legal--support > p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--ivory-soft);
}

.contact {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.contact__lbl {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ivory-soft);
  margin-bottom: 0.15rem;
}

.contact a {
  font-family: var(--font-display);
  font-weight: 500;
  word-break: break-word;
}

.contact__note {
  font-size: 0.85rem !important;
  color: var(--ivory-soft) !important;
}

.footer-copy {
  margin: 1.5rem 0 0 !important;
  font-size: 0.8rem;
  color: var(--mortar) !important;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: 2rem;
  }

  .hero__visual {
    order: -1;
    min-height: 16rem;
  }

  .vault-card--shelf,
  .vault-card--ledger,
  .vault-card--yard {
    margin-left: 0;
    margin-right: 0;
  }

  .device-pair {
    grid-template-columns: 1fr;
  }

  .legal-wrap {
    grid-template-columns: 1fr;
  }

  .zigzag__row--flip .zigzag__body {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .rail {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    flex-direction: row;
    justify-content: center;
    padding: 0.75rem;
    background: rgba(13, 15, 23, 0.92);
    border-top: 1px solid var(--hairline);
    backdrop-filter: blur(12px);
  }

  .page {
    padding-bottom: 5.5rem;
    padding-right: var(--page-pad);
  }

  .section__intro--right {
    text-align: left;
    margin-left: 0;
  }
}