:root {
  --rail: 188px;
  --black: #101311;
  --black-2: #161a18;
  --black-3: #1d211f;
  --white: #f6f7f5;
  --muted: #a9afab;
  --line: rgba(246, 247, 245, 0.16);
  --line-strong: rgba(246, 247, 245, 0.32);
  --green: #008f68;
  --green-bright: #00b985;
  --pad: clamp(30px, 5vw, 80px);
  --sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--white);
  background: var(--black);
  font-family: var(--sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 5px;
}

svg {
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.5;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 11px 15px;
  color: var(--black);
  background: var(--white);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.case-rail {
  position: fixed;
  z-index: 20;
  inset: 0 auto 0 0;
  display: flex;
  width: var(--rail);
  flex-direction: column;
  padding: 70px 34px 44px;
  background: rgba(16, 19, 17, 0.97);
  border-right: 1px solid rgba(246, 247, 245, 0.14);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  width: fit-content;
  text-transform: uppercase;
}

.brand > span {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
}

.brand small {
  margin-top: 7px;
  color: var(--green);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.56em;
  line-height: 1;
}

.case-nav {
  display: flex;
  flex-direction: column;
  margin: auto 0;
}

.case-nav a {
  position: relative;
  padding: 19px 0 22px;
  color: #d2d5d3;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  transition:
    color 220ms ease,
    padding-left 350ms var(--ease);
}

.case-nav a::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0;
  height: 1px;
  content: "";
  background: var(--green);
  transition: width 350ms var(--ease);
}

.case-nav a:hover,
.case-nav a.is-active {
  padding-left: 18px;
  color: var(--white);
}

.case-nav a:hover::before,
.case-nav a.is-active::before {
  width: 10px;
}

.rail-note {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.6;
  text-transform: uppercase;
}

.mobile-case-header {
  display: none;
}

.case-main {
  margin-left: var(--rail);
}

.case-section {
  padding: clamp(86px, 9vw, 132px) var(--pad);
  border-bottom: 1px solid rgba(246, 247, 245, 0.1);
}

.case-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(420px, 0.84fr) minmax(520px, 1.16fr);
  gap: clamp(48px, 6vw, 94px);
  min-height: 100svh;
  overflow: hidden;
  padding: 112px var(--pad) 74px;
  background:
    linear-gradient(90deg, rgba(16, 19, 17, 0.96), rgba(16, 19, 17, 0.58)),
    url("/assets/hero-architecture.webp") center / cover no-repeat;
}

.case-hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 36%;
  content: "";
  pointer-events: none;
  background: linear-gradient(180deg, rgba(16, 19, 17, 0), var(--black));
}

.case-hero-copy,
.case-hero-visual {
  position: relative;
  z-index: 1;
  align-self: center;
}

.case-hero h1 {
  margin: 0;
  font-size: clamp(64px, 7.5vw, 120px);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.96;
}

.case-hero p {
  max-width: 560px;
  margin: 28px 0 0;
  color: #dde2de;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.58;
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.case-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 64px;
  min-width: 230px;
  padding: 0 26px;
  color: var(--white);
  background: var(--green);
  font-size: 15px;
  font-weight: 500;
  transition:
    background 240ms ease,
    transform 250ms var(--ease);
}

.case-button svg {
  width: 22px;
  transition: transform 300ms var(--ease);
}

.case-button:hover {
  background: #00785a;
}

.case-button:hover svg {
  transform: translateX(5px);
}

.case-button.secondary {
  border: 1px solid var(--green);
  background: rgba(0, 143, 104, 0.08);
}

.case-button.secondary:hover {
  background: var(--green);
}

.case-meta {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 0 24px;
  max-width: 620px;
  margin: 36px 0 0;
}

.case-meta dt,
.case-meta dd {
  margin: 0;
  padding: 12px 0;
  border-top: 1px solid rgba(246, 247, 245, 0.18);
}

.case-meta dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-meta dd {
  color: #e8ebe8;
  font-size: 14px;
  line-height: 1.45;
}

.case-disclaimer {
  max-width: 640px;
  margin-top: 28px;
  padding: 18px 20px;
  color: #d8ddda;
  border: 1px solid rgba(246, 247, 245, 0.18);
  background: rgba(16, 19, 17, 0.66);
  font-size: 14px !important;
}

.product-frame {
  border: 1px solid rgba(246, 247, 245, 0.22);
  background: rgba(16, 19, 17, 0.88);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(14px);
}

.frame-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 0 18px;
  border-bottom: 1px solid rgba(246, 247, 245, 0.12);
}

.frame-topbar strong {
  font-size: 15px;
  font-weight: 500;
}

.frame-topbar span {
  padding: 7px 10px;
  color: var(--green);
  border: 1px solid rgba(0, 143, 104, 0.62);
  font-size: 11px;
}

.frame-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 14px;
  padding: 18px;
}

.frame-panel {
  min-height: 170px;
  padding: 16px;
  border: 1px solid rgba(246, 247, 245, 0.13);
  background: rgba(246, 247, 245, 0.035);
}

.frame-panel h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 500;
}

.mini-metric {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.mini-metric span {
  display: block;
  padding: 12px;
  border: 1px solid rgba(246, 247, 245, 0.11);
  color: #cbd1cd;
  font-size: 11px;
}

.mini-metric b {
  display: block;
  margin-top: 8px;
  color: var(--white);
  font-size: 24px;
  font-weight: 400;
}

.mini-flow {
  display: grid;
  gap: 10px;
}

.mini-flow p {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  margin: 0;
  color: #d7dbd8;
  font-size: 12px;
}

.mini-flow b {
  height: 4px;
  margin-top: 7px;
  background: linear-gradient(90deg, var(--green) var(--bar), rgba(246, 247, 245, 0.16) 0);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.65fr) minmax(360px, 1fr);
  gap: clamp(32px, 6vw, 84px);
  align-items: end;
  margin-bottom: 54px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(48px, 6vw, 92px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.section-heading p {
  max-width: 620px;
  margin: 0;
  color: #d2d7d3;
  font-size: clamp(17px, 1.35vw, 20px);
  line-height: 1.62;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.comparison article {
  padding: clamp(24px, 3vw, 40px);
  background: var(--black-2);
}

.comparison h3,
.panel-list h3,
.scope-column h3 {
  margin: 0 0 22px;
  font-size: clamp(23px, 2vw, 32px);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.comparison ul,
.panel-list ul,
.scope-column ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.comparison li,
.panel-list li,
.scope-column li {
  position: relative;
  padding-left: 22px;
  color: #d4d9d5;
  font-size: 15px;
  line-height: 1.55;
}

.comparison li::before,
.panel-list li::before,
.scope-column li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 8px;
  height: 1px;
  content: "";
  background: var(--green);
}

.journey-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.7fr) minmax(420px, 1fr);
  gap: clamp(34px, 5vw, 70px);
  align-items: start;
}

.phone-flow {
  max-width: 430px;
  border: 1px solid var(--line-strong);
  background: radial-gradient(circle at 50% 18%, rgba(0, 143, 104, 0.12), transparent 36%), var(--black-2);
}

.phone-head {
  display: flex;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.phone-head span {
  font-size: 18px;
  font-weight: 500;
}

.phone-body {
  padding: 22px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.steps span {
  display: grid;
  place-items: center;
  min-height: 42px;
  color: #d4d9d5;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
}

.steps span:first-child,
.steps span:nth-child(2) {
  color: var(--white);
  background: var(--green);
  border-color: var(--green);
}

.phone-option,
.phone-field,
.phone-confirm {
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(246, 247, 245, 0.035);
}

.phone-option {
  border-color: rgba(0, 143, 104, 0.8);
}

.phone-option + .phone-option,
.phone-field,
.phone-confirm {
  margin-top: 12px;
}

.phone-option strong,
.phone-confirm strong {
  display: block;
  font-size: 17px;
  font-weight: 500;
}

.phone-option span,
.phone-field span,
.phone-confirm span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.phone-times {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin-top: 14px;
}

.phone-times span {
  display: grid;
  place-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
}

.phone-times span:nth-child(5) {
  color: var(--white);
  background: var(--green);
  border-color: var(--green);
}

.panel-list {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.panel-list article {
  padding: clamp(22px, 3vw, 34px);
  background: var(--black-2);
}

.workflow-map {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.workflow-map article {
  min-height: 188px;
  padding: 22px;
  background: var(--black-2);
}

.workflow-map span {
  display: block;
  margin-bottom: 34px;
  color: var(--green);
  font-family: var(--mono);
  font-size: 11px;
}

.workflow-map strong {
  display: block;
  font-size: 19px;
  font-weight: 500;
}

.workflow-map p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.scope-column {
  padding: clamp(26px, 4vw, 46px);
  background: var(--black-2);
}

.cta-section {
  background: var(--green);
}

.cta-section .section-heading {
  align-items: start;
  margin-bottom: 0;
}

.cta-section h2,
.cta-section p {
  color: var(--white);
}

.cta-section .case-button {
  color: var(--black);
  background: var(--white);
}

.cta-section .case-button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(16, 19, 17, 0.18);
}

.case-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 30px;
  padding: 28px var(--pad);
  margin-left: var(--rail);
  color: rgba(246, 247, 245, 0.82);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
}

@media (max-width: 1040px) {
  :root {
    --rail: 164px;
  }

  .case-rail {
    padding-inline: 26px;
  }

  .case-hero {
    grid-template-columns: 1fr;
  }

  .case-hero-visual {
    align-self: start;
  }

  .section-heading,
  .journey-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 780px) {
  :root {
    --pad: 22px;
  }

  .case-rail {
    display: none;
  }

  .mobile-case-header {
    position: fixed;
    z-index: 30;
    inset: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
    padding: 0 var(--pad);
    background: rgba(16, 19, 17, 0.95);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
  }

  .mobile-case-header a:last-child {
    color: var(--green);
    font-size: 14px;
  }

  .case-main,
  .case-footer {
    margin-left: 0;
  }

  .case-hero {
    min-height: auto;
    padding-top: 130px;
  }

  .case-hero h1 {
    font-size: clamp(54px, 15vw, 78px);
  }

  .case-actions {
    flex-direction: column;
  }

  .case-button {
    width: 100%;
  }

  .case-meta {
    grid-template-columns: 1fr;
  }

  .case-meta dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .case-meta dd {
    padding-top: 5px;
  }

  .frame-grid,
  .comparison,
  .scope-grid,
  .workflow-map {
    grid-template-columns: 1fr;
  }

  .mini-metric,
  .phone-times {
    grid-template-columns: 1fr;
  }

  .case-footer {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}