/* Generated by tools/fetch-fonts.mjs — do not edit by hand. */
/* Sora, Inter and IBM Plex Mono, latin subset, self-hosted (SIL Open Font License). */
@font-face {
  font-family: Sora;
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/sora-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: Sora;
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/sora-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/plex-mono-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/plex-mono-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+FEFF, U+FFFD;
}

/* =========================================================================
   DALLA Labs — "Signal infrastructure"
   Dark-first, hairline structure, one warm metallic accent.
   ========================================================================= */

/* 1. Tokens
   ========================================================================= */

:root {
  --ink: #05070a;
  --ink-2: #080b11;
  --surface: #0a0e15;
  --surface-2: #0e131b;
  --surface-3: #131926;

  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --line-copper: rgba(201, 135, 63, 0.28);

  --bone: #f2efe9;
  --bone-dim: #d9d5cd;
  --muted: #98a2b0;
  --muted-2: #6d7787;

  --copper: #c9873f;
  --copper-hi: #e9be86;
  --copper-soft: rgba(201, 135, 63, 0.14);
  --copper-ink: #17120b;

  --font-display: 'Sora', 'Segoe UI', system-ui, sans-serif;
  --font-text: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --shell: 1240px;
  --gutter: clamp(20px, 5vw, 48px);
  --section-y: clamp(72px, 9vw, 132px);

  --r-xs: 8px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-panel: 0 40px 80px -60px rgba(0, 0, 0, 0.9);
  --shadow-lift: 0 18px 40px -24px rgba(0, 0, 0, 0.9);
}

/* 2. Base
   ========================================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 60% at 78% -10%, rgba(201, 135, 63, 0.09), transparent 60%),
    radial-gradient(90% 50% at 10% 0%, rgba(120, 150, 190, 0.05), transparent 55%);
  background-repeat: no-repeat;
  color: var(--bone);
  font-family: var(--font-text);
  font-size: 1.0625rem;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

::selection {
  background: rgba(201, 135, 63, 0.32);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--copper-hi);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--copper);
  color: var(--copper-ink);
  border-radius: var(--r-xs);
  font: 500 0.8rem/1 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.skip-link:focus {
  top: 16px;
}

/* 3. Layout primitives
   ========================================================================= */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  position: relative;
  padding: var(--section-y) 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(40px, 5vw, 68px);
}

.section-head-lg {
  max-width: 940px;
}

.head-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.head-index {
  display: block;
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.22em;
  color: var(--copper);
  margin-bottom: 18px;
}

.head-title {
  font-size: clamp(1.7rem, 3.6vw, 2.85rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  text-wrap: balance;
}

.section-head-lg .head-title {
  font-size: clamp(1.95rem, 4.6vw, 3.6rem);
  line-height: 1.02;
}

.head-lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1rem, 1.15vw, 1.09rem);
}

.accent {
  color: var(--copper-hi);
}

.accent-muted {
  color: var(--muted-2);
}

/* The numbered spine, shown only where a section head does not carry its own index. */
.spine {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.22em;
  color: var(--copper);
}

.spine::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-copper), transparent);
}

.spine:has(+ .section-head .head-index) {
  display: none;
}

.eyebrow {
  font: 500 0.72rem/1.5 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
}

.eyebrow-muted {
  color: var(--muted-2);
}

/* 4. Buttons and links
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font: 500 0.78rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  transition:
    transform 0.25s var(--ease),
    background-color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

.btn-primary {
  background: linear-gradient(180deg, var(--copper-hi), var(--copper));
  color: var(--copper-ink);
  border-color: rgba(233, 190, 134, 0.55);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    0 14px 34px -18px rgba(201, 135, 63, 0.75);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.36),
    0 18px 40px -18px rgba(201, 135, 63, 0.85);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--line-strong);
  color: var(--bone);
}

.btn-ghost:hover {
  transform: translateY(-1px);
  border-color: var(--line-copper);
  background: rgba(201, 135, 63, 0.06);
}

.btn-sm {
  padding: 11px 18px;
  font-size: 0.72rem;
}

.btn-lg {
  padding: 17px 30px;
  font-size: 0.82rem;
}

.btn-block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 0.78rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper-hi);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-copper);
  transition: gap 0.25s var(--ease), border-color 0.25s var(--ease);
}

.link-arrow:hover {
  gap: 14px;
  border-color: var(--copper);
}

/* 5. Header and navigation
   ========================================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 7, 10, 0.68);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(5, 7, 10, 0.88);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 74px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-right: auto;
}

.logo-image {
  display: block;
  width: 128px;
  height: auto;
  flex: none;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.logo-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.2em;
  line-height: 1;
}

.logo-descriptor {
  font: 400 0.58rem/1 var(--font-mono);
  letter-spacing: 0.24em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.logo-lg .logo-image {
  width: 190px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  padding: 6px 0;
  transition: color 0.25s var(--ease);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--copper);
  transition: width 0.3s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--bone);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xs);
  background: rgba(255, 255, 255, 0.02);
  align-items: center;
  justify-content: center;
}

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 17px;
}

.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  background: var(--bone);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded='true'] .nav-toggle-bars i:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle-bars i:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-nav {
  border-top: 1px solid var(--line);
  background: rgba(6, 8, 12, 0.97);
  backdrop-filter: blur(18px);
}

.mobile-nav-inner {
  padding: 22px var(--gutter) 30px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.mobile-nav nav {
  display: flex;
  flex-direction: column;
}

.mobile-link {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--bone-dim);
}

.mobile-link.is-active {
  color: var(--copper-hi);
}

.mobile-nav-foot {
  display: grid;
  gap: 10px;
}

/* 6. Hero
   ========================================================================= */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 9vh, 96px) 0 clamp(60px, 8vh, 92px);
  border-bottom: 1px solid var(--line);
}

.hero-ambient {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  opacity: 0.6;
  -webkit-mask-image: linear-gradient(100deg, transparent 6%, rgba(0, 0, 0, 0.75) 52%, #000 100%);
  mask-image: linear-gradient(100deg, transparent 6%, rgba(0, 0, 0, 0.75) 52%, #000 100%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(180deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.55;
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 10%, transparent 75%);
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 10%, transparent 75%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: end;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.hero-title {
  font-size: clamp(2.35rem, 6.4vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.hero-lede {
  max-width: 56ch;
  color: var(--bone-dim);
  font-size: clamp(1.02rem, 1.4vw, 1.19rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-micro {
  max-width: 46ch;
  padding-left: 18px;
  border-left: 1px solid var(--line-copper);
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-aside {
  position: relative;
  padding-bottom: 6px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.008));
  padding: 20px 22px 18px;
  box-shadow: var(--shadow-panel);
}

.hero-stat-label {
  font: 500 0.66rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.hero-stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.045);
  font-size: 0.9rem;
}

.hero-stat-row:last-child {
  border-bottom: none;
}

.hero-stat-row span:first-child {
  color: var(--muted);
}

.hero-stat-row span:last-child {
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-align: right;
}

/* 7. Hero flow rail
   ========================================================================= */

.hero-flow {
  position: relative;
  margin-top: clamp(48px, 7vh, 84px);
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.flow-caption {
  font: 500 0.66rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--muted-2);
  margin-bottom: 30px;
}

.flow-rail {
  position: relative;
  padding-top: 20px;
}

.flow-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 25px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 8%, var(--line-strong) 92%, transparent);
}

.flow-packets {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  pointer-events: none;
}

.flow-packets i {
  position: absolute;
  top: 22px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper-hi);
  box-shadow: 0 0 14px 2px rgba(201, 135, 63, 0.65);
  opacity: 0;
  animation: packet-travel 4.2s linear infinite;
}

.flow-packets i:nth-child(2) {
  animation-delay: 1.4s;
}

.flow-packets i:nth-child(3) {
  animation-delay: 2.8s;
}

@keyframes packet-travel {
  0% {
    left: 0;
    opacity: 0;
  }
  8% {
    opacity: 1;
  }
  92% {
    opacity: 1;
  }
  100% {
    left: calc(100% - 7px);
    opacity: 0;
  }
}

.flow-stages {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 18px;
}

.flow-node {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 22px;
}

.flow-dot {
  position: absolute;
  top: 19px;
  left: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--ink);
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.flow-node.is-active .flow-dot {
  background: var(--copper);
  border-color: var(--copper-hi);
  box-shadow: 0 0 0 5px rgba(201, 135, 63, 0.14);
}

.flow-step {
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--muted-2);
}

.flow-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.83rem;
  letter-spacing: 0.06em;
  color: var(--bone);
  text-transform: uppercase;
}

.flow-node.is-active .flow-label {
  color: var(--copper-hi);
}

.flow-detail {
  color: var(--muted-2);
  font-size: 0.83rem;
  line-height: 1.55;
}

/* 8. Rail divider
   ========================================================================= */

.rail-divider {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 var(--gutter);
  max-width: var(--shell);
  margin: 0 auto;
}

.rail-line {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 20%, var(--line) 80%, transparent);
}

.rail-packets {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: 50%;
  height: 1px;
  pointer-events: none;
}

.rail-packets i {
  position: absolute;
  top: -3px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 12px 1px rgba(201, 135, 63, 0.5);
  opacity: 0;
  animation: packet-travel 5.4s linear infinite;
}

.rail-packets i:nth-child(2) {
  animation-delay: 1.35s;
}

.rail-packets i:nth-child(3) {
  animation-delay: 2.7s;
}

.rail-packets i:nth-child(4) {
  animation-delay: 4.05s;
}

.rail-label {
  position: relative;
  background: var(--ink);
  padding: 10px 20px;
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--muted-2);
  text-align: center;
}

/* 9. Panels
   ========================================================================= */

.panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.006));
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.014);
}

.panel-label {
  font: 500 0.66rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--bone-dim);
}

.panel-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--muted-2);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.status-live {
  color: var(--copper-hi);
}

.status-live .dot {
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(201, 135, 63, 0.5);
  }
  50% {
    opacity: 0.55;
    box-shadow: 0 0 0 5px rgba(201, 135, 63, 0);
  }
}

.panel-body {
  position: relative;
  padding: clamp(22px, 3vw, 38px);
}

/* 10. Problem / leaks
   ========================================================================= */

.leak-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.leak-card {
  background: var(--ink);
  padding: clamp(24px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color 0.35s var(--ease);
}

.leak-card:hover {
  background: var(--surface);
}

.leak-label {
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.leak-title {
  font-size: 1.06rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.leak-body {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.statement {
  margin-top: clamp(44px, 6vw, 76px);
  padding-top: clamp(30px, 4vw, 44px);
  border-top: 1px solid var(--line-copper);
  display: grid;
  gap: 18px;
}

.statement-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 3.1rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 24ch;
  text-wrap: balance;
}

.statement-note {
  max-width: 58ch;
  color: var(--muted);
  font-size: 0.98rem;
}

/* 11. System diagram
   ========================================================================= */

.panel-diagram .panel-body {
  padding: 0;
}

.diagram-wrap {
  position: relative;
  padding: clamp(18px, 3vw, 40px);
}

.panel-ambient {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  -webkit-mask-image: radial-gradient(70% 70% at 60% 50%, #000, transparent 78%);
  mask-image: radial-gradient(70% 70% at 60% 50%, #000, transparent 78%);
  pointer-events: none;
}

.system-diagram {
  position: relative;
  width: 100%;
  height: auto;
  display: block;
}

.sys-node-box {
  fill: rgba(255, 255, 255, 0.02);
  stroke: var(--line);
  stroke-width: 1;
}

.sys-link {
  fill: none;
  stroke: rgba(201, 135, 63, 0.22);
  stroke-width: 1;
  stroke-dasharray: 2 6;
}

.sys-packet {
  fill: var(--copper-hi);
  filter: drop-shadow(0 0 6px rgba(201, 135, 63, 0.8));
}

.sys-node-label {
  fill: var(--bone);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.sys-node-detail {
  fill: var(--muted-2);
  font-family: var(--font-text);
  font-size: 14px;
}

.sys-core-box {
  stroke: rgba(201, 135, 63, 0.42);
  stroke-width: 1;
}

.sys-core-ring {
  fill: none;
  stroke: rgba(201, 135, 63, 0.5);
  stroke-width: 1;
}

.sys-core-dot {
  fill: var(--copper);
}

.sys-core-title,
.sys-core-sub,
.sys-core-meta {
  text-anchor: middle;
  font-family: var(--font-display);
}

.sys-core-title {
  fill: var(--bone);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.sys-core-sub {
  fill: var(--copper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
}

.sys-core-meta {
  fill: var(--muted-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.system-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.system-note {
  background: var(--ink);
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.system-note-label {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.system-note p {
  color: var(--muted);
  font-size: 0.94rem;
}

/* 12. Services
   ========================================================================= */

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(26px, 2.8vw, 36px);
  background: var(--ink);
  transition: background-color 0.35s var(--ease);
}

.service-card:hover {
  background: var(--surface);
}

.service-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-index {
  font: 500 0.68rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.service-arrow {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.service-arrow svg {
  width: 13px;
  height: 13px;
}

.service-card:hover .service-arrow {
  transform: translateX(3px);
  color: var(--copper-hi);
  border-color: var(--line-copper);
}

.service-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.08em;
  color: var(--bone);
}

.service-summary {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.62;
}

.services-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.95rem;
}

/* 13. Stack and loop
   ========================================================================= */

.stack-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.stack-panel {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.024), rgba(255, 255, 255, 0.006));
  padding: clamp(22px, 2.6vw, 32px);
}

.stack-list {
  display: flex;
  flex-direction: column;
}

.stack-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 76px minmax(0, 1.2fr);
  align-items: center;
  gap: 12px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.stack-row:last-child {
  border-bottom: none;
}

.stack-from {
  font: 500 0.72rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--muted);
}

.stack-to {
  font: 500 0.72rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--bone);
}

.stack-link {
  position: relative;
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), var(--line-copper));
}

.stack-link i {
  position: absolute;
  top: -2.5px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--copper);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.stack-row:hover .stack-link i,
.stack-row.is-visible .stack-link i {
  opacity: 1;
  animation: link-travel 2.6s linear infinite;
}

@keyframes link-travel {
  0% {
    left: 0;
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    left: calc(100% - 6px);
    opacity: 0;
  }
}

.stack-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.aside-title {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}

.aside-body {
  color: var(--muted);
  font-size: 0.96rem;
}

.loop-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.loop-item {
  background: var(--ink);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background-color 0.35s var(--ease);
}

.loop-item:hover {
  background: var(--surface);
}

.loop-index {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.loop-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--bone);
}

.loop-detail {
  color: var(--muted-2);
  font-size: 0.82rem;
  line-height: 1.5;
}

/* 14. Method
   ========================================================================= */

.method-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.method-item {
  background: var(--ink);
  padding: clamp(26px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background-color 0.35s var(--ease);
}

.method-item:hover {
  background: var(--surface);
}

.method-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.method-index {
  font: 500 0.7rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.method-label {
  font: 500 0.66rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--muted);
}

.method-title {
  font-size: 1.2rem;
  line-height: 1.28;
  max-width: 26ch;
}

.method-body {
  color: var(--muted);
  font-size: 0.95rem;
}

.method-points {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 4px;
}

.method-points li {
  position: relative;
  padding-left: 20px;
  color: var(--bone-dim);
  font-size: 0.9rem;
}

.method-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--copper);
}

.method-foot {
  margin-top: 26px;
}

/* 15. Integrations
   ========================================================================= */

.integration-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.integration-cell {
  background: var(--ink);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color 0.35s var(--ease);
}

.integration-cell:hover {
  background: var(--surface);
}

.integration-glyph {
  width: 20px;
  height: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  position: relative;
}

.integration-glyph::after {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 2px;
  background: var(--copper);
  opacity: 0.75;
}

.integration-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--bone);
}

.integration-detail {
  color: var(--muted-2);
  font-size: 0.87rem;
  line-height: 1.55;
}

.caveat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  margin-top: 28px;
  padding: 24px 26px;
  border: 1px solid var(--line-copper);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(201, 135, 63, 0.06), rgba(201, 135, 63, 0.015));
}

.caveat-label {
  font: 500 0.62rem/1.6 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper-hi);
  white-space: nowrap;
}

.caveat p {
  color: var(--bone-dim);
  font-size: 0.94rem;
}

/* 16. Booking
   ========================================================================= */

.booking-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.booking-list {
  display: flex;
  flex-direction: column;
}

.booking-beat {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.3s var(--ease);
}

.booking-beat:last-child {
  border-bottom: none;
}

.booking-beat.is-active {
  border-bottom-color: var(--line-copper);
}

.beat-index {
  font: 500 0.72rem/1.6 var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--muted-2);
  transition: color 0.3s var(--ease);
}

.booking-beat.is-active .beat-index {
  color: var(--copper);
}

.beat-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.beat-label {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--muted-2);
}

.beat-title {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.beat-detail {
  color: var(--muted);
  font-size: 0.92rem;
}

.beat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  margin-bottom: 28px;
}

.beat-card {
  background: var(--ink);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.beat-card .beat-title {
  font-size: 1rem;
}

/* Chat illustration */

.chat-thread {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 340px;
}

.chat-msg {
  max-width: 88%;
  padding: 14px 18px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.022);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.js .chat-msg {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}

.chat-msg.is-shown {
  opacity: 1;
  transform: none;
}

.chat-in {
  align-self: flex-end;
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.035);
}

.chat-out {
  align-self: flex-start;
  border-color: var(--line-copper);
  background: linear-gradient(180deg, rgba(201, 135, 63, 0.08), rgba(201, 135, 63, 0.02));
}

.chat-system {
  align-self: flex-start;
  max-width: 100%;
  padding: 10px 16px;
  border: 1px dashed var(--line-copper);
  background: transparent;
}

.chat-who {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--muted-2);
}

.chat-msg p {
  font-size: 0.95rem;
  color: var(--bone-dim);
}

.chat-system-line {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font: 500 0.63rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--copper-hi);
}

.chat-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.chat-slot {
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xs);
  background: rgba(255, 255, 255, 0.02);
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--bone-dim);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.chat-slot:hover,
.chat-slot.is-selected {
  border-color: var(--copper);
  color: var(--copper-hi);
  background: rgba(201, 135, 63, 0.1);
}

.chat-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.chat-hint {
  font: 400 0.72rem/1.5 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--muted-2);
}

/* Calendar illustration */

.cal-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.cal-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cal-day {
  font: 500 0.63rem/1 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.cal-slots {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.cal-slot {
  position: relative;
  padding: 11px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  font: 400 0.76rem/1 var(--font-mono);
  color: var(--muted);
  text-align: center;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.cal-slot:hover {
  border-color: var(--line-copper);
  color: var(--bone-dim);
}

.cal-slot.is-booked {
  border-color: var(--copper);
  background: linear-gradient(180deg, rgba(201, 135, 63, 0.2), rgba(201, 135, 63, 0.07));
  color: var(--copper-hi);
}

.cal-slot-flag {
  display: block;
  margin-top: 6px;
  font-size: 0.55rem;
  letter-spacing: 0.16em;
  color: var(--copper-hi);
}

.cal-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--muted-2);
}

.cal-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.cal-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid var(--line-strong);
}

.cal-swatch-booked {
  border-color: var(--copper);
  background: rgba(201, 135, 63, 0.4);
}

/* 17. Human + AI
   ========================================================================= */

.human-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.human-divider {
  align-self: stretch;
  background: linear-gradient(180deg, transparent, var(--line-strong), transparent);
}

.human-column {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.human-title {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.human-ai .human-title {
  color: var(--copper-hi);
}

.human-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.human-list li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.human-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 1px;
  background: var(--copper);
}

.human-team .human-list li::before {
  background: var(--muted-2);
}

/* 18. Calculator
   ========================================================================= */

.calc {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(28px, 4vw, 56px);
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-field label {
  font: 500 0.72rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-dim);
}

.calc-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 108px;
  align-items: center;
  gap: 18px;
}

.calc-value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--copper-hi);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.calc-help {
  color: var(--muted-2);
  font-size: 0.84rem;
  line-height: 1.5;
}

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  margin: 0;
}

input[type='range']::-webkit-slider-runnable-track {
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    var(--copper) 0%,
    var(--copper) var(--fill, 0%),
    var(--line-strong) var(--fill, 0%),
    var(--line-strong) 100%
  );
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -7px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(180deg, var(--copper-hi), var(--copper));
  box-shadow: 0 0 0 4px rgba(201, 135, 63, 0.12);
  transition: box-shadow 0.25s var(--ease);
}

input[type='range']:hover::-webkit-slider-thumb {
  box-shadow: 0 0 0 7px rgba(201, 135, 63, 0.16);
}

input[type='range']::-moz-range-track {
  height: 2px;
  border-radius: 2px;
  background: var(--line-strong);
}

input[type='range']::-moz-range-progress {
  height: 2px;
  border-radius: 2px;
  background: var(--copper);
}

input[type='range']::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border: none;
  border-radius: 50%;
  background: var(--copper-hi);
}

.calc-results {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.006));
}

.calc-result {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.calc-result-label {
  font: 500 0.66rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.calc-result-value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
}

.calc-result-primary .calc-result-value {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  color: var(--copper-hi);
}

.calc-assumptions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-assumptions-label {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--muted-2);
}

.calc-assumptions p,
.calc-disclaimer {
  color: var(--muted-2);
  font-size: 0.82rem;
  line-height: 1.6;
}

.calc-disclaimer {
  padding: 14px 16px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-xs);
}

/* 19. Trust
   ========================================================================= */

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.trust-card {
  background: var(--ink);
  padding: clamp(24px, 2.8vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color 0.35s var(--ease);
}

.trust-card:hover {
  background: var(--surface);
}

.trust-label {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.trust-title {
  font-size: 1.04rem;
  line-height: 1.3;
}

.trust-body {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.62;
}

/* 20. About
   ========================================================================= */

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}

.about-layout .section-head {
  margin-bottom: 28px;
}

.about-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.about-body {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1rem;
}

.about-actions {
  margin-top: 8px;
}

.about-card,
.aside-panel,
.about-hero-card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.006));
  padding: clamp(22px, 2.6vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-hero-card p {
  color: var(--bone-dim);
  font-size: 1rem;
}

.about-card-label,
.aside-panel-label {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.about-card-body {
  color: var(--muted);
  font-size: 0.94rem;
}

.industry-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.industry-list li {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: 400 0.76rem/1 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--muted);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.principle-card {
  background: var(--ink);
  padding: clamp(24px, 2.6vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color 0.35s var(--ease);
}

.principle-card:hover {
  background: var(--surface);
}

.principle-label {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.principle-title {
  font-size: 1rem;
  line-height: 1.32;
}

.principle-body {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.audience-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.audience-layout .industry-list {
  gap: 10px;
}

.audience-note {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 24px;
  border-left: 1px solid var(--line-copper);
}

.audience-note-label {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.audience-note p {
  color: var(--muted);
  font-size: 0.94rem;
}

/* 21. Inner page hero, lists, service detail
   ========================================================================= */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 6vw, 74px) 0 clamp(46px, 6vw, 74px);
  border-bottom: 1px solid var(--line);
}

.page-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(180deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(70% 80% at 30% 20%, #000 5%, transparent 75%);
  mask-image: radial-gradient(70% 80% at 30% 20%, #000 5%, transparent 75%);
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.7fr);
  gap: clamp(30px, 5vw, 64px);
  align-items: end;
}

.page-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.page-hero-title {
  font-size: clamp(1.9rem, 4.6vw, 3.3rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  text-wrap: balance;
}

.page-hero-lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
}

.page-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.breadcrumbs {
  padding-top: 26px;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font: 400 0.72rem/1 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

.breadcrumbs a:hover {
  color: var(--copper-hi);
}

.crumb-sep {
  color: var(--muted-2);
  opacity: 0.6;
}

.bullet-list,
.detail-list,
.signal-list {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.bullet-list li,
.detail-list li,
.signal-list li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.62;
}

.bullet-list li::before,
.detail-list li::before,
.signal-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 11px;
  height: 1px;
  background: var(--copper);
}

.detail-list li {
  color: var(--bone-dim);
}

.signal-tick {
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  border: 1px solid var(--line-copper);
  border-radius: 50%;
}

.signal-list li {
  padding-left: 28px;
  color: var(--bone-dim);
}

.signal-list li::before {
  display: none;
}

.signal-list li .signal-tick::after {
  content: '';
  position: absolute;
  left: 3.5px;
  top: 3.5px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--copper);
}

.sdc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.service-detail-card {
  background: var(--ink);
  padding: clamp(26px, 3vw, 38px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background-color 0.35s var(--ease);
}

.service-detail-card:hover {
  background: var(--surface);
}

.sdc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sdc-index {
  font: 500 0.68rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.sdc-kicker {
  font: 400 0.62rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--muted-2);
  text-align: right;
}

.sdc-name {
  font-size: 1.22rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.sdc-summary {
  color: var(--muted);
  font-size: 0.95rem;
}

.sdc-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 4px 0 6px;
}

.sdc-points li {
  position: relative;
  padding-left: 22px;
  color: var(--bone-dim);
  font-size: 0.9rem;
}

.sdc-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 1px;
  background: var(--copper);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.split-main {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.service-aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.006));
  padding: clamp(22px, 2.6vw, 30px);
}

.service-aside-label {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.service-aside-summary {
  color: var(--bone-dim);
  font-size: 0.96rem;
  padding-bottom: 6px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.flow-step-item {
  background: var(--ink);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.flow-step-index {
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.flow-step-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--bone);
}

.flow-step-detail {
  color: var(--muted-2);
  font-size: 0.85rem;
  line-height: 1.55;
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.faq {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.02rem;
  color: var(--bone);
  transition: color 0.25s var(--ease);
}

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

.faq summary:hover {
  color: var(--copper-hi);
}

.faq-icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--copper);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.faq-icon::before {
  left: 0;
  top: 6.5px;
  width: 14px;
  height: 1px;
}

.faq-icon::after {
  left: 6.5px;
  top: 0;
  width: 1px;
  height: 14px;
}

.faq[open] .faq-icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.faq-body {
  padding: 0 0 24px;
  max-width: 76ch;
}

.faq-body p {
  color: var(--muted);
  font-size: 0.95rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.related-card {
  background: var(--ink);
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background-color 0.35s var(--ease);
}

.related-card:hover {
  background: var(--surface);
}

.related-kicker {
  font: 400 0.62rem/1 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--copper);
}

.related-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--bone);
}

.related-summary {
  color: var(--muted-2);
  font-size: 0.88rem;
}

.fit-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(26px, 4vw, 52px);
}

.fit-column h3 {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: var(--bone);
}

.call-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.call-card {
  background: var(--ink);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.call-index {
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--copper);
}

.call-card h3 {
  font-size: 1rem;
  line-height: 1.3;
}

.call-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* 22. Contact
   ========================================================================= */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.8fr);
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}

.contact-main .section-head {
  margin-bottom: 30px;
}

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.enquiry-form {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field-wide {
  grid-column: 1 / -1;
}

.form-field label {
  font: 500 0.68rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-dim);
}

.req {
  color: var(--copper);
  margin-left: 5px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xs);
  background: rgba(255, 255, 255, 0.022);
  color: var(--bone);
  font-family: var(--font-text);
  font-size: 0.95rem;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.form-field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) 21px, calc(100% - 15px) 21px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--copper);
  background: rgba(201, 135, 63, 0.05);
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #d1654f;
}

.field-help {
  color: var(--muted-2);
  font-size: 0.82rem;
}

.field-error {
  color: #e08a72;
  font-size: 0.82rem;
}

.consent {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  color: var(--muted);
  font-size: 0.88rem;
  cursor: pointer;
}

.consent input {
  margin-top: 4px;
  width: 17px;
  height: 17px;
  accent-color: var(--copper);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.form-note {
  color: var(--muted-2);
  font-size: 0.84rem;
  max-width: 40ch;
}

.form-status {
  font-size: 0.92rem;
  color: var(--bone-dim);
  min-height: 1px;
}

.form-status.is-error {
  color: #e08a72;
}

.form-status.is-success {
  color: var(--copper-hi);
}

/* 23. Privacy / legal
   ========================================================================= */

.section-legal-intro {
  padding-top: clamp(40px, 5vw, 64px);
}

.legal-note {
  max-width: 68ch;
  color: var(--muted-2);
  font-size: 0.88rem;
  padding: 16px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-xs);
}

.legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.legal-body {
  color: var(--muted);
  font-size: 0.98rem;
}

/* 24. 404
   ========================================================================= */

.section-notfound {
  padding: clamp(70px, 10vh, 120px) 0;
}

.notfound {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.notfound-title {
  font-size: clamp(1.9rem, 4.6vw, 3.2rem);
  text-transform: uppercase;
}

.notfound-body {
  max-width: 56ch;
  color: var(--muted);
}

.notfound-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 8px 0 12px;
}

.notfound .related-grid {
  width: 100%;
}

/* 25. CTA band
   ========================================================================= */

.cta-band {
  position: relative;
  overflow: hidden;
  padding: clamp(70px, 9vw, 130px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
}

.cta-ambient {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  pointer-events: none;
}

.cta-band-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
  max-width: 880px;
}

.cta-title {
  font-size: clamp(1.8rem, 4.4vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  text-wrap: balance;
}

.cta-text {
  max-width: 58ch;
  color: var(--bone-dim);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 6px;
}

.cta-note {
  color: var(--muted-2);
  font-size: 0.86rem;
}

/* 26. Footer
   ========================================================================= */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink-2);
  padding: clamp(56px, 7vw, 84px) 0 34px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 0.8fr)) minmax(0, 1.1fr);
  gap: clamp(28px, 4vw, 56px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-brand .logo {
  margin-right: 0;
}

.footer-statement {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--bone);
  max-width: 24ch;
}

.footer-note {
  color: var(--muted-2);
  font-size: 0.88rem;
  max-width: 46ch;
}

.footer-heading {
  font: 500 0.64rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-col a {
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 0.25s var(--ease);
}

.footer-col a:hover {
  color: var(--bone);
}

.footer-cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-cta p {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer-legal {
  font: 500 0.64rem/1.6 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--muted-2);
}

.footer-meta {
  color: var(--muted-2);
  font-size: 0.8rem;
}

/* 27. Mobile CTA
   ========================================================================= */

.mobile-cta {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  padding: 12px var(--gutter) calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(6, 8, 12, 0.92);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
}

/* 28. Reveal
   ========================================================================= */

.reveal {
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
  transition-delay: calc(var(--stagger, 0) * 70ms);
}

.js .reveal {
  opacity: 0;
  transform: translateY(12px);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* 29. Responsive
   ========================================================================= */

@media (max-width: 1180px) {
  .hero-inner,
  .page-hero-inner,
  .about-layout,
  .audience-layout,
  .contact-layout,
  .legal-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-aside,
  .page-hero-aside {
    max-width: 520px;
  }

  .flow-stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    row-gap: 26px;
  }

  .flow-line,
  .flow-packets {
    display: none;
  }

  .flow-node {
    padding-top: 0;
    padding-left: 22px;
  }

  .flow-dot {
    top: 3px;
    left: 0;
  }

  .leak-grid,
  .service-grid,
  .trust-grid,
  .integration-grid,
  .principle-grid,
  .call-grid,
  .beat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-list,
  .sdc-grid,
  .split-layout,
  .stack-layout,
  .booking-layout,
  .calc,
  .fit-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .loop-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-actions .btn-sm {
    display: none;
  }

  .mobile-cta {
    display: block;
  }

  body {
    padding-bottom: 78px;
  }

  .human-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .human-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  }

  .cal-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  :root {
    --section-y: 64px;
  }

  .leak-grid,
  .service-grid,
  .trust-grid,
  .integration-grid,
  .principle-grid,
  .call-grid,
  .beat-grid,
  .method-list,
  .sdc-grid,
  .related-grid,
  .system-notes,
  .loop-strip,
  .footer-grid,
  .form-grid,
  .flow-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .flow-stages {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-title {
    font-size: clamp(2.1rem, 10vw, 3rem);
  }

  .statement-text {
    max-width: 100%;
  }

  .chat-msg {
    max-width: 100%;
  }

  .chat-thread {
    min-height: 0;
  }

  .cal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stack-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 16px 0;
  }

  .stack-link {
    width: 60px;
  }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
  }

  .rail-label {
    font-size: 0.58rem;
    padding: 8px 12px;
  }
}

@media (max-width: 480px) {
  .calc-control {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .calc-value {
    text-align: left;
  }

  .cal-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .btn,
  .page-hero-actions .btn,
  .cta-actions .btn {
    width: 100%;
  }
}

/* 30. Reduced motion
   ========================================================================= */

@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;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }

  .flow-packets,
  .rail-packets,
  .sys-packet {
    display: none;
  }
}