:root {
  --paper: oklch(0.985 0.006 95);
  --paper-strong: oklch(0.955 0.012 95);
  --ink: oklch(0.22 0.018 228);
  --ink-soft: oklch(0.42 0.02 226);
  --muted: oklch(0.57 0.018 226);
  --line: oklch(0.88 0.014 95);
  --line-dark: oklch(0.36 0.025 226);
  --field: oklch(0.995 0.004 95);
  --terminal: oklch(0.24 0.046 191);
  --terminal-soft: oklch(0.32 0.054 191);
  --amber: oklch(0.74 0.145 72);
  --amber-soft: oklch(0.93 0.055 78);
  --rose: oklch(0.49 0.142 20);
  --green: oklch(0.55 0.115 145);
  --blueprint: oklch(0.52 0.075 238);
  --radius: 8px;
  --shadow: 0 18px 48px oklch(0.22 0.018 228 / 0.12);
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-kerning: normal;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1rem, 4vw, 3rem);
  padding: calc(0.8rem + env(safe-area-inset-top)) clamp(1rem, 5vw, 4.5rem) 0.8rem;
  border-bottom: 1px solid var(--line);
  background: oklch(0.985 0.006 95 / 0.95);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 44px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--terminal);
  color: var(--amber-soft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.nav a {
  min-height: 44px;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: color 160ms ease-out, background-color 160ms ease-out, transform 160ms ease-out;
}

.nav a:hover {
  color: var(--terminal);
  background: var(--paper-strong);
}

.nav a:active,
.button:active {
  transform: translateY(1px);
}

.hero {
  position: relative;
  min-height: 74dvh;
  display: grid;
  align-items: end;
  overflow: hidden;
  padding: clamp(3rem, 7vw, 5rem) clamp(1rem, 5vw, 4.5rem) clamp(2rem, 4vw, 3rem);
  color: oklch(0.985 0.006 95);
  background: var(--terminal);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: oklch(0.18 0.022 226 / 0.46);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 76ch;
}

.kicker {
  width: fit-content;
  margin: 0 0 1.25rem;
  padding: 0.42rem 0.6rem;
  border: 1px solid oklch(0.9 0.04 78 / 0.45);
  border-radius: var(--radius);
  color: var(--amber-soft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  text-wrap: balance;
}

h1 {
  max-width: 16ch;
  font-size: clamp(2.55rem, 5.3vw, 4.85rem);
  font-weight: 760;
}

h2 {
  max-width: 18ch;
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 740;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 720;
}

p {
  text-wrap: pretty;
}

.lead {
  max-width: 64ch;
  margin: 1rem 0 0;
  color: oklch(0.94 0.009 95 / 0.88);
  font-size: clamp(1.12rem, 2vw, 1.45rem);
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 46px;
  padding: 0.78rem 1rem;
  border: 1px solid var(--terminal);
  border-radius: var(--radius);
  background: var(--terminal);
  color: oklch(0.985 0.006 95);
  font-weight: 740;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease-out, background-color 160ms ease-out, border-color 160ms ease-out;
}

.button:hover {
  background: var(--terminal-soft);
  border-color: var(--terminal-soft);
}

.button.secondary {
  background: oklch(0.985 0.006 95 / 0.08);
  border-color: oklch(0.985 0.006 95 / 0.48);
}

.button.secondary:hover {
  background: oklch(0.985 0.006 95 / 0.16);
}

.section {
  padding: clamp(4rem, 8vw, 7.5rem) clamp(1rem, 5vw, 4.5rem);
}

.section.compact {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
}

.section.soft {
  background: var(--paper-strong);
}

.section-head {
  display: grid;
  gap: 0.9rem;
  max-width: 70ch;
  margin-bottom: clamp(2rem, 5vw, 4rem);
}

.section-head p,
.article .lead {
  color: var(--ink-soft);
  font-size: 1.1rem;
}

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

.service-card {
  display: grid;
  align-content: start;
  gap: 1rem;
  min-height: 21rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border-radius: var(--radius);
  background: var(--field);
}

.service-card-accent {
  background: oklch(0.94 0.033 191);
}

.service-number {
  width: fit-content;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  color: var(--terminal);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 800;
}

.service-card p {
  margin: 0;
  color: var(--ink-soft);
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.55fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.detail-panel {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border-radius: var(--radius);
  background: var(--field);
}

.detail-panel h2 {
  max-width: 20ch;
  font-size: clamp(1.45rem, 2.2vw, 2.3rem);
}

.detail-panel p {
  color: var(--ink-soft);
}

.detail-panel-dark {
  background: var(--terminal);
  color: oklch(0.985 0.006 95);
}

.detail-panel-dark p {
  color: oklch(0.93 0.01 95 / 0.86);
}

.detail-panel-dark strong {
  color: var(--amber-soft);
}

.clean-list {
  display: grid;
  gap: 0.85rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.clean-list li {
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.text-link {
  align-self: end;
  width: fit-content;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--terminal);
  font-weight: 760;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

.text-link:hover {
  color: var(--rose);
}

.workflow-map {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(17rem, 0.75fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.workflow-main,
.workflow-side,
.panel,
.quote-panel,
.calc-panel,
.result,
.note,
.template-block {
  border-radius: var(--radius);
  background: var(--field);
}

.workflow-main,
.workflow-side {
  padding: clamp(1.35rem, 3vw, 2.5rem);
}

.workflow-side {
  display: grid;
  gap: 1rem;
  background: var(--terminal);
  color: oklch(0.985 0.006 95);
}

.workflow-list {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

.workflow-item {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.icon {
  width: 1.3rem;
  height: 1.3rem;
  color: var(--terminal);
  stroke-width: 1.8;
}

.workflow-side .icon,
.button .icon {
  color: currentColor;
}

.icon-box {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--amber-soft);
}

.proof-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1rem, 3vw, 2rem);
}

.proof-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.proof-list li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.proof-list strong {
  color: var(--rose);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
}

.quote-panel {
  align-self: start;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.quote-line {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.quote-line:last-child {
  border-bottom: 0;
}

.quote-line span {
  color: var(--muted);
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.48fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.calc-panel {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
}

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

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
}

.help {
  color: var(--muted);
  font-size: 0.86rem;
}

input,
select {
  width: 100%;
  min-height: 46px;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

input:focus,
select:focus {
  border-color: var(--terminal);
}

.result {
  position: sticky;
  top: 5.5rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--terminal);
  background: var(--terminal);
  color: oklch(0.985 0.006 95);
}

.result p {
  margin: 0.7rem 0;
  color: oklch(0.93 0.01 95 / 0.86);
}

.result strong {
  color: var(--amber-soft);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.status {
  margin-top: 1rem;
  color: var(--amber-soft);
  font-size: 0.94rem;
}

.template-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.template-block {
  display: grid;
  gap: 0.8rem;
  padding: clamp(1.15rem, 3vw, 2rem);
}

.zh {
  padding: 1rem;
  border: 1px solid oklch(0.77 0.08 191);
  border-radius: var(--radius);
  background: oklch(0.94 0.033 191);
  color: oklch(0.24 0.046 191);
  font-size: 1.05rem;
}

.article {
  max-width: 76ch;
  margin-inline: auto;
}

.article h1 {
  max-width: 16ch;
  color: var(--ink);
  font-size: clamp(2.4rem, 4.8vw, 4.6rem);
  font-weight: 760;
}

.article h2 {
  max-width: 28ch;
  margin-top: 2.4rem;
  color: var(--ink);
  font-size: clamp(1.55rem, 2.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.18;
}

.article strong {
  font-weight: 700;
}

.article p,
.article li {
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.article ul {
  padding-left: 1.2rem;
}

.article li {
  margin: 0.7rem 0;
}

.note {
  padding: 1rem;
  border: 1px solid var(--amber);
  background: var(--amber-soft);
}

.cta-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--terminal);
  color: oklch(0.985 0.006 95);
}

.cta-band p {
  margin: 0.5rem 0 0;
  color: oklch(0.93 0.01 95 / 0.84);
}

.footer {
  padding: 2rem clamp(1rem, 5vw, 4.5rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.reveal {
  animation: rise 420ms ease-out both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    animation-duration: 1ms;
    animation-iteration-count: 1;
    transition-duration: 1ms;
  }
}

@media (max-width: 900px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .workflow-map,
  .proof-grid,
  .calculator,
  .service-grid,
  .detail-grid,
  .template-grid,
  .cta-band {
    grid-template-columns: 1fr;
  }

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

  .result {
    position: static;
  }
}

@media (max-width: 520px) {
  .hero {
    min-height: 78dvh;
  }

  h1 {
    font-size: clamp(2.45rem, 12vw, 4rem);
  }

  .nav {
    gap: 0.2rem;
  }

  .nav a {
    padding-inline: 0.5rem;
  }

  .proof-list li,
  .quote-line {
    grid-template-columns: 1fr;
  }
}