/* Indigo Continuum — Infinity IT
   Palette (exact): Porcelain #F7F7FC / indigo #47417C / lilac #B7ABCD
   Type: system stacks only — no webfonts, no CDN, no @import */

:root {
  --porcelain: #F7F7FC;
  --porcelain-deep: #ECECF4;
  --indigo: #47417C;
  --indigo-deep: #35305F;
  --lilac: #B7ABCD;
  --ink: #47417C;
  --ink-soft: #5D5878;
  --rule: #B7ABCD;
  --danger: #7A3344;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --font: system-ui, "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --gutter: clamp(1.05rem, 4.4vw, 3.1rem);
  --measure: 70rem;
  --header-h: 3.55rem;
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  background: var(--porcelain);
  color: var(--ink);
}

body {
  font-family: var(--font);
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.62;
  min-width: 0;
}

img,
svg,
video,
canvas {
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3 {
  font-family: var(--font);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.18;
  color: var(--indigo);
}

h1 {
  font-size: clamp(1.85rem, 6.2vw, 3.35rem);
  margin: 0;
  font-weight: 400;
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  margin: 0.12rem 0 0;
}

h3 {
  font-size: 1.08rem;
  margin: 0 0 0.4rem;
  font-weight: 500;
}

p {
  margin: 0;
}

a {
  color: var(--indigo);
  overflow-wrap: anywhere;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button,
.btn,
.nav-toggle,
summary {
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: 0;
  transform: translateY(-120%);
  z-index: 40;
  background: var(--indigo);
  color: var(--porcelain);
  padding: 0.5rem 0.85rem;
  text-decoration: none;
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0.55rem);
}

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

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

.clip-hidden input {
  width: 1px;
  max-width: 1px;
  height: 1px;
  min-height: 0;
  padding: 0;
  border: 0;
}

.mast {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--porcelain);
  border-bottom: 1px solid var(--lilac);
}

.mast-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-width: 0;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0.55rem var(--gutter);
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--indigo);
  text-decoration: none;
  min-width: 0;
}

.brand-loop {
  width: 2.1rem;
  height: 0.95rem;
  flex-shrink: 0;
  color: var(--indigo);
}

.brand-name {
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--lilac);
  background: transparent;
  position: relative;
  flex-shrink: 0;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--indigo);
  position: absolute;
  left: 13px;
  transition: transform 180ms var(--ease-out), opacity 180ms var(--ease-out);
}

.nav-toggle-bars {
  top: 21px;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
}

.nav-toggle-bars::before {
  top: -6px;
}

.nav-toggle-bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  list-style: none;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 400;
}

.mast-mail {
  font-size: 0.82rem;
  color: var(--indigo);
  border-bottom: 1px solid var(--lilac);
  text-decoration: none;
  padding-bottom: 0.08rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.6rem 1.15rem;
  background: var(--indigo);
  color: var(--porcelain);
  border: 1px solid var(--indigo);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform 160ms var(--ease-out), background-color 180ms var(--ease-out), color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.text-link {
  font-size: 0.95rem;
  color: var(--indigo);
  text-underline-offset: 0.22em;
}

.kicker {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--indigo);
  margin-bottom: 0.65rem;
  font-weight: 500;
}

.split-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.4rem, 4vw, 3.4rem);
  align-items: center;
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(2.2rem, 5.5vw, 4.6rem) var(--gutter) clamp(2.6rem, 6vw, 4.8rem);
  min-width: 0;
}

.hero-copy,
.loop-plate,
.section-head,
.prose,
.offer-row,
.fit-index > div,
.circuit li,
.enquiry-aside,
.inquiry-form {
  min-width: 0;
}

.lede {
  color: var(--ink-soft);
  font-size: 1.08rem;
  max-width: 36rem;
  margin-top: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.95rem 1.3rem;
  margin-top: 1.7rem;
}

.loop-plate {
  margin: 0;
  padding: 1.35rem 1.25rem 1.15rem;
  border: 1px solid var(--lilac);
  background: var(--porcelain);
}

.loop-mark {
  display: block;
  width: 100%;
  height: auto;
}

.loop-stroke {
  fill: none;
  stroke: var(--indigo);
  stroke-width: 1.6;
}

.loop-node {
  fill: var(--porcelain);
  stroke: var(--lilac);
  stroke-width: 1.4;
}

.loop-plate figcaption {
  margin-top: 0.85rem;
}

.stations {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.1rem;
  list-style: none;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--indigo);
  font-weight: 500;
}

.loop-plate figcaption p {
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.thesis {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(2.6rem, 6vw, 4.4rem);
  min-width: 0;
}

.thesis h2 {
  max-width: 38rem;
}

.thesis > p {
  max-width: 40rem;
  margin-top: 1rem;
  color: var(--ink-soft);
}

.practice,
.offer,
.fit,
.circuit-section,
.together,
.questions,
.enquiry {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(2.4rem, 5.5vw, 4.4rem) var(--gutter);
  min-width: 0;
  border-top: 1px solid var(--lilac);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1rem 2rem;
  margin-bottom: 1.8rem;
  align-items: end;
}

.section-head:not(:has(.section-note)) {
  grid-template-columns: minmax(0, 1fr);
}

.section-note {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.prose-pair,
.together-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5rem 2.2rem;
}

.prose p + p {
  margin-top: 0.75rem;
}

.prose p,
.canon p,
.offer-body > p,
.fit-index dd,
.circuit p {
  color: var(--ink-soft);
}

.canon {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.15rem 1.35rem;
  margin-top: 2.1rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--lilac);
}

.canon li {
  min-width: 0;
  padding-top: 0.85rem;
  border-top: 2px solid var(--indigo);
}

.offer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.offer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--lilac);
}

.offer-row:first-child {
  border-top: 1px solid var(--lilac);
}

.include-list {
  list-style: none;
  margin-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.include-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--indigo);
  font-size: 0.95rem;
}

.include-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.7rem;
  height: 0.35rem;
  border: 1px solid var(--lilac);
  border-top: 0;
  border-right: 0;
  border-radius: 0 0 0 0.45rem;
}

.fit-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--lilac);
}

.fit-index > div {
  padding: 1.2rem 1.25rem 1.2rem 0;
  border-bottom: 1px solid var(--lilac);
}

.fit-index > div:nth-child(odd) {
  padding-right: 1.4rem;
  border-right: 1px solid var(--lilac);
}

.fit-index > div:nth-child(even) {
  padding-left: 1.4rem;
}

.fit-index dt {
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--indigo);
}

.fit-index dd {
  margin: 0;
}

.circuit {
  list-style: none;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-left: 2.1rem;
}

.circuit::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.55rem;
  bottom: 1.6rem;
  width: 1px;
  background: var(--lilac);
}

.circuit::after {
  content: "";
  position: absolute;
  left: 0.42rem;
  bottom: 0.35rem;
  width: 1.55rem;
  height: 1.55rem;
  border: 1px solid var(--lilac);
  border-top: 0;
  border-right: 0;
  border-radius: 0 0 0 1.1rem;
}

.circuit li {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.85rem 0 1.15rem;
}

.joint {
  position: absolute;
  left: -1.82rem;
  top: 1.05rem;
  width: 0.72rem;
  height: 0.72rem;
  border: 1.5px solid var(--indigo);
  border-radius: 50%;
  background: var(--porcelain);
}

.circuit-end .joint {
  background: var(--indigo);
}

.together-grid .plain-list {
  list-style: none;
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.plain-list li {
  padding-left: 1.1rem;
  position: relative;
  color: var(--ink-soft);
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.55rem;
  height: 1px;
  background: var(--lilac);
}

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

.faq-list details {
  border-bottom: 1px solid var(--lilac);
  min-width: 0;
}

.faq-list summary {
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  font-weight: 500;
  color: var(--indigo);
}

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

.faq-list summary::after {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  flex-shrink: 0;
  border-right: 1px solid var(--indigo);
  border-bottom: 1px solid var(--indigo);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease-out);
}

.faq-list details[open] summary::after {
  transform: rotate(-135deg);
}

.faq-list details p {
  padding: 0 0 1.05rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

.enquiry-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: 1.8rem 2.2rem;
  align-items: start;
}

.enquiry-aside h3 {
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.enquiry-aside address {
  font-style: normal;
  margin: 0.7rem 0;
  color: var(--ink-soft);
}

.contact-hint {
  margin-top: 0.85rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.inquiry-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.95rem 1.1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.field-span,
.form-actions {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.88rem;
  font-weight: 500;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-width: 0;
  background: var(--porcelain);
  border: 1px solid var(--lilac);
  padding: 0.65rem 0.7rem;
  min-height: 44px;
  border-radius: 0;
}

.field textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--indigo);
  outline-offset: 1px;
  border-color: var(--indigo);
}

.field-check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 0.55rem 0.7rem;
}

.field-check input {
  width: 1.15rem;
  height: 1.15rem;
  min-height: 0;
  margin-top: 0.15rem;
  accent-color: var(--indigo);
}

.field-check .field-error {
  grid-column: 1 / -1;
}

.field-error {
  margin: 0;
  color: var(--danger);
  font-size: 0.85rem;
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: var(--danger);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.1rem;
}

.form-status {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.form-status.is-error {
  color: var(--danger);
}

.colophon {
  border-top: 1px solid var(--lilac);
  background: var(--porcelain-deep);
}

.colophon-inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.7rem var(--gutter) 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 1.1rem 1.6rem;
  min-width: 0;
}

.footer-name {
  font-weight: 500;
  letter-spacing: 0.02em;
}

.footer-tag {
  margin: 0.4rem 0 0.55rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

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

.footer-nav a {
  text-decoration: none;
  color: var(--indigo);
}

.colophon address {
  font-style: normal;
  color: var(--ink-soft);
}

.footer-legal {
  grid-column: 1 / -1;
  padding-top: 0.6rem;
  border-top: 1px solid var(--lilac);
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 240ms var(--ease-out), transform 240ms var(--ease-out);
}

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

@media (hover: hover) and (pointer: fine) {
  .site-nav a:hover,
  .footer-nav a:hover,
  .text-link:hover,
  .enquiry-aside a:hover,
  .colophon a:hover {
    color: var(--indigo-deep);
  }

  .btn:hover {
    background: var(--indigo-deep);
    border-color: var(--indigo-deep);
  }

  .mast-mail:hover {
    border-bottom-color: var(--indigo);
  }
}

@media (max-width: 900px) {
  .section-head,
  .prose-pair,
  .together-grid,
  .enquiry-layout,
  .colophon-inner {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .fit-index > div:nth-child(odd),
  .fit-index > div:nth-child(even) {
    padding-right: 0;
    padding-left: 0;
    border-right: 0;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--porcelain);
    border-bottom: 1px solid var(--lilac);
    padding: 0.4rem var(--gutter) 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
  }

  .split-hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 1.8rem;
  }

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

@media (max-width: 520px) {
  .canon {
    grid-template-columns: minmax(0, 1fr);
  }

  .stations {
    gap: 0.35rem 0.85rem;
  }

  .loop-plate {
    padding: 1rem 0.85rem 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skip-link,
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after,
  .btn,
  .faq-list summary::after {
    transition: none;
  }
}