@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600&family=Geist+Mono:wght@400;500&display=swap');

/* Visual system: DESIGN.md / Midnight Signal. */

:root {
  color-scheme: dark;
  --bg: #000000;
  --bg-soft: #050505;
  --surface: #050505;
  --surface-strong: #181818;
  --surface-glow: rgba(160, 224, 171, 0.12);
  --ink: #ffffff;
  --muted: #c9c9c9;
  --muted-2: #8a8a8a;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.28);
  --accent: #ffac2e;
  --accent-strong: #ffffff;
  --accent-soft: rgba(255, 172, 46, 0.11);
  --warm: #ffac2e;
  --copper: #ffac2e;
  --glow: #a0e0ab;
  --ember: #a52d25;
  --umber: #181818;
  --gradient-depth: linear-gradient(90deg, rgb(160, 224, 171), rgb(255, 172, 46) 50%, rgb(165, 45, 37));
  --shadow: 0 0 0 1px rgba(255,255,255,0.075), inset 0 1px 0 rgba(255,255,255,0.07);
  --ring-shadow: 0 0 0 1px var(--line);
  --radius-lg: 10px;
  --radius-md: 10px;
  --radius-sm: 10px;
  --radius-pill: 75.024px;
  --max: 1078px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-slow: 900ms;
  --motion-med: 620ms;
  --motion-fast: 220ms;
  font-family: Geist, Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 74% -8%, rgba(255, 172, 46, 0.18), transparent 30rem),
    radial-gradient(circle at 12% 18rem, rgba(160, 224, 171, 0.105), transparent 28rem),
    radial-gradient(circle at 90% 36rem, rgba(165, 45, 37, 0.12), transparent 34rem),
    #000000;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 16rem),
    radial-gradient(circle at 50% 0%, rgba(255, 172, 46, 0.08), transparent 34rem);
  opacity: 0.72;
}

body::after {
  opacity: 0.08;
  background-image: radial-gradient(rgba(255, 255, 255, 0.22) 0.45px, transparent 0.65px);
  background-size: 28px 28px;
  mix-blend-mode: screen;
  animation: ambient-grain 22s steps(8, end) infinite;
}

@keyframes ambient-grain {
  0%, 100% { transform: translate3d(0, 0, 0); opacity: 0.22; }
  50% { transform: translate3d(-1.4rem, 1rem, 0); opacity: 0.34; }
}

@keyframes rise-in {
  from { opacity: 0; transform: translate3d(0, 18px, 0); filter: blur(8px); }
  to { opacity: 1; transform: translate3d(0, 0, 0); filter: blur(0); }
}

@keyframes panel-drift {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -8px, 0); }
}

@keyframes pulse-status {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.34), 0 0 20px rgba(255, 255, 255, 0.52); }
  50% { box-shadow: 0 0 0 8px rgba(255, 255, 255, 0), 0 0 28px rgba(255, 255, 255, 0.62); }
}

@keyframes headline-sheen {
  0%, 78%, 100% { background-position: 0% 50%; }
  42% { background-position: 100% 50%; }
}

a { color: inherit; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: #000000;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(22px) saturate(1.25);
  background: rgba(0, 0, 0, 0.62);
  border-bottom: 1px solid rgba(255, 255, 255, 0.075);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.92rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand, .nav-links, .nav-actions {
  display: flex;
  align-items: center;
  gap: 0.78rem;
}

.brand {
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.035em;
}

.brand-mark {
  display: block;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.22);
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 160ms ease;
}

.nav-links a:hover { color: var(--ink); }

.language-toggle {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.42rem 0.72rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.055);
  color: var(--ink);
  font: inherit;
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background var(--motion-fast) ease, border-color var(--motion-fast) ease, transform var(--motion-fast) var(--ease-soft);
}

.language-toggle:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.8rem, 7vw, 5.8rem) 1.25rem;
}

.hero {
  min-height: 84vh;
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(320px, 0.86fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  padding-top: clamp(5rem, 9vw, 7.5rem);
}

.hero-copy { position: relative; }

.hero-copy::before {
  content: "";
  position: absolute;
  width: 16rem;
  height: 16rem;
  left: -7rem;
  top: -5rem;
  z-index: -1;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, rgba(255, 255, 255, 0.14), transparent 68%);
  filter: blur(12px);
}

.hero h1, h2 {
  margin: 0;
  letter-spacing: -0.075em;
  line-height: 0.98;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(2.8rem, 7.3vw, 6.25rem);
  font-weight: 400;
  background: linear-gradient(112deg, #ffffff 0%, #ffffff 46%, #ffac2e 55%, #ffffff 68%, #ffffff 100%);
  background-size: 190% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: rise-in var(--motion-slow) var(--ease-out) both 90ms, headline-sheen 7.5s ease-in-out infinite 1.2s;
}

h2 {
  font-size: clamp(2.1rem, 4.6vw, 4.15rem);
  font-weight: 400;
}

h3 {
  margin: 0 0 0.6rem;
  line-height: 1.18;
  letter-spacing: -0.045em;
  font-weight: 400;
}

p { margin: 0; }

.lead {
  max-width: 760px;
  margin-top: 1.45rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.65vw, 1.32rem);
  line-height: 1.72;
  animation: rise-in var(--motion-slow) var(--ease-out) both 210ms;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.95rem;
  color: var(--accent-strong);
  font-family: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--warm);
  box-shadow: 0 0 24px rgba(160, 224, 171, 0.48);
}

.hero .eyebrow { animation: rise-in var(--motion-med) var(--ease-out) both; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.78rem;
  margin-top: 1.75rem;
  animation: rise-in var(--motion-slow) var(--ease-out) both 330ms;
}

.centered { justify-content: center; }

.button {
  position: relative;
  overflow: hidden;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.88rem 1.18rem;
  border-radius: var(--radius-pill);
  font-weight: 400;
  letter-spacing: -0.015em;
  text-decoration: none;
  transition: transform var(--motion-fast) var(--ease-soft), box-shadow var(--motion-fast) ease, background var(--motion-fast) ease, border-color var(--motion-fast) ease;
}

.button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 12%, rgba(255, 255, 255, 0.32) 48%, transparent 72%);
  transform: translateX(-130%);
  transition: transform 620ms var(--ease-out);
  pointer-events: none;
}

.button:hover::after { transform: translateX(130%); }

.button:hover {
  transform: translateY(-2px);
  box-shadow: none;
}

.button-primary {
  background: rgba(255, 255, 255, 0.94);
  color: #000000;
  border: 1px solid rgba(255, 255, 255, 0.62);
  box-shadow: none;
}

.button-primary:hover {
  background: var(--copper);
  border-color: rgba(255, 172, 46, 0.9);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line);
  color: var(--ink);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.075);
  border-color: var(--line-strong);
}

.support-line {
  margin-top: 1.05rem;
  color: var(--muted-2);
  font-size: 0.96rem;
}

.hero .support-line { animation: rise-in var(--motion-slow) var(--ease-out) both 440ms; }

.hero-panel, .card, .offer-card, details, .steps li, .comparison-card, .contact-card {
  background: var(--umber);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: none;
}

.hero-panel {
  position: relative;
  padding: 1rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: rise-in var(--motion-slow) var(--ease-out) both 250ms, panel-drift 8s ease-in-out infinite 1.2s;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -40% -28% auto auto;
  width: 18rem;
  height: 18rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, rgba(255, 172, 46, 0.22), transparent 67%);
  filter: blur(12px);
  animation: panel-drift 9s ease-in-out infinite reverse;
}

.hero-panel::after, .card::after, .offer-card::after, details::after, .steps li::after, .comparison-card::after, .contact-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(120deg, transparent 18%, rgba(255, 255, 255, 0.08) 42%, transparent 68%);
  opacity: 0;
  transform: translateX(-26%);
  transition: opacity var(--motion-fast) ease, transform 720ms var(--ease-out);
  pointer-events: none;
}

.hero-panel:hover::after, .card:hover::after, .offer-card:hover::after, details:hover::after, .steps li:hover::after, .comparison-card:hover::after, .contact-card:hover::after {
  opacity: 1;
  transform: translateX(26%);
}

.panel-topline {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  padding: 0.35rem 0.45rem;
  color: var(--muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.78rem;
}

.status-dot {
  width: 0.58rem;
  height: 0.58rem;
  border-radius: var(--radius-pill);
  background: var(--warm);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.52);
  animation: pulse-status 2.8s ease-in-out infinite;
}

.workflow-card {
  position: relative;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.workflow-card-main { padding: 1.25rem; }

.workflow-mini-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin-top: 0.75rem;
}

.mini-card {
  min-height: 92px;
  padding: 0.85rem;
  border-radius: 18px;
  background: var(--surface-strong);
  border: 1px solid rgba(255, 255, 255, 0.095);
}

.mini-card span {
  display: block;
  color: var(--muted-2);
  font-size: 0.78rem;
}

.mini-card strong {
  display: block;
  margin-top: 1rem;
  font-size: 1.2rem;
  letter-spacing: -0.05em;
}

.panel-label {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.3rem 0.68rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.check-list {
  display: grid;
  gap: 0.78rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--ink);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--warm);
  font-weight: 800;
}

.numbered { counter-reset: item; }
.numbered li { padding-left: 2.1rem; }
.numbered li::before {
  counter-increment: item;
  content: counter(item);
  width: 1.35rem;
  height: 1.35rem;
  display: grid;
  place-items: center;
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--accent-strong);
  font-size: 0.78rem;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: start;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2rem;
}

.section-heading p:not(.eyebrow) {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.problem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.four-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  position: relative;
  min-height: 100%;
  padding: 1.2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--motion-fast) var(--ease-soft), border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 172, 46, 0.32);
  background: #1d1d1d;
}

.problem-grid .card:first-child,
.feature-card:first-child,
.ladder-card:first-child {
  background:
    radial-gradient(circle at 16% 8%, rgba(255, 172, 46, 0.13), transparent 12rem),
    var(--umber);
}

.feature-card p, .ladder-card p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.72;
}

.build-category {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.pill-list li {
  padding: 0.32rem 0.64rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  font-weight: 400;
}

.before-after-section { padding-top: 3.8rem; }

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

.comparison-card {
  position: relative;
  overflow: hidden;
  min-height: 100%;
  padding: clamp(1.15rem, 3vw, 1.65rem);
  border-radius: var(--radius-lg);
  transition: transform var(--motion-fast) var(--ease-soft), border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

.comparison-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.18);
}

.before-card {
  background:
    radial-gradient(circle at 12% 8%, rgba(138, 138, 138, 0.12), transparent 14rem),
    var(--umber);
}

.after-card {
  background:
    radial-gradient(circle at 88% 8%, rgba(255, 172, 46, 0.14), transparent 16rem),
    #1a1a1a;
}

.muted-list li { color: var(--muted); }
.muted-list li::before { color: var(--muted-2); }

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

.target-card {
  min-height: 132px;
  display: flex;
  align-items: flex-end;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.contact-section { padding-top: 4rem; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.contact-card {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform var(--motion-fast) var(--ease-soft), border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

.contact-card[hidden] { display: none; }

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 172, 46, 0.32);
  background: #1d1d1d;
}

.primary-contact {
  background:
    radial-gradient(circle at 88% 12%, rgba(255, 172, 46, 0.18), transparent 14rem),
    #1a1a1a;
}

.contact-kicker {
  width: fit-content;
  margin-bottom: 1.1rem;
  padding: 0.28rem 0.62rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  border: 1px solid rgba(255, 172, 46, 0.22);
  color: var(--muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-card strong {
  display: block;
  margin-bottom: 0.75rem;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  line-height: 1.1;
  letter-spacing: -0.05em;
}

.contact-card p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.contact-action {
  margin-top: auto;
  padding-top: 1.4rem;
  color: var(--warm);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.card-kicker {
  display: inline-flex;
  margin-bottom: 0.82rem;
  color: var(--warm);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  font-weight: 500;
}

.offer-section { padding-top: 3.5rem; }

.offer-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.17fr 0.83fr;
  gap: 1.5rem;
  padding: clamp(1.25rem, 4vw, 2.35rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 86% 10%, rgba(255, 172, 46, 0.14), transparent 18rem),
    var(--umber);
}

.offer-card p { margin-top: 0.9rem; color: var(--muted); }

.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  position: relative;
  overflow: hidden;
  min-height: 188px;
  padding: 1rem;
  border-radius: var(--radius-md);
  transition: transform var(--motion-fast) var(--ease-soft), border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

.steps li:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 172, 46, 0.3);
  background: #1d1d1d;
}

.steps span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 1rem;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid rgba(255, 172, 46, 0.22);
  color: var(--muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-weight: 500;
}

.steps strong { display: block; margin-bottom: 0.35rem; }
.steps p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.68;
}

.ladder {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.ladder-card:nth-child(2) { transform: translateY(0.5rem); }
.ladder-card:nth-child(3) { transform: translateY(1rem); }
.ladder-card:nth-child(4) { transform: translateY(1.5rem); }

.faq-list {
  display: grid;
  gap: 0.85rem;
}

details {
  position: relative;
  overflow: hidden;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  transition: border-color var(--motion-fast) ease, background var(--motion-fast) ease;
}

details:hover {
  border-color: rgba(255, 172, 46, 0.28);
  background: #1d1d1d;
}

summary {
  cursor: pointer;
  font-weight: 400;
  letter-spacing: -0.025em;
}

details p {
  margin-top: 0.72rem;
  color: var(--muted);
}

.final-cta {
  text-align: center;
  padding-top: 4.2rem;
}

.final-cta h2 {
  max-width: 790px;
  margin: 0 auto;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  color: var(--muted-2);
  border-top: 1px solid var(--line);
}

:focus-visible {
  outline: 2px solid var(--warm);
  outline-offset: 4px;
}

.js-enabled .motion-reveal {
  opacity: 0;
  transform: translate3d(0, 22px, 0);
  filter: blur(10px);
}

.js-enabled .motion-reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  filter: blur(0);
  transition: opacity var(--motion-med) var(--ease-out), transform var(--motion-med) var(--ease-out), filter var(--motion-med) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js-enabled .motion-reveal,
  .js-enabled .motion-reveal.is-visible {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }

  .hero h1 { color: var(--ink); background: none; }
}

@media (max-width: 980px) {
  .hero, .split-section, .offer-card { grid-template-columns: 1fr; }
  .three-grid, .four-grid, .ladder, .steps, .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ladder-card:nth-child(n) { transform: none; }
}

@media (max-width: 680px) {
  .section { padding: 4.1rem 1rem; }
  .nav { align-items: center; }
  .nav-links { display: none; }
  .language-toggle { min-height: 34px; padding: 0.36rem 0.62rem; }
  .problem-grid, .three-grid, .four-grid, .ladder, .steps, .workflow-mini-grid, .before-after-grid, .target-grid, .contact-grid { grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero { min-height: auto; padding-top: 4.6rem; }
  .hero h1 { letter-spacing: -0.058em; }
  .hero-panel { padding: 0.82rem; }
}


/* Component Library */
.library-page .site-header { position: sticky; }
.library-main {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(4.5rem, 8vw, 6.75rem) 1.25rem 5rem;
}
.library-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: end;
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
.library-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.6rem, 6.6vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: -0.075em;
}
.library-hero p { margin-top: 1.2rem; color: var(--muted); max-width: 64ch; }
.library-note {
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  background: var(--umber);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.library-section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; border-top: 1px solid var(--line); }
.library-section h2 { margin-bottom: 1rem; }
.library-section > p { color: var(--muted); max-width: 70ch; margin-bottom: 1.4rem; }
.token-grid, .component-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.swatch, .component-tile, .state-panel, .code-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--umber);
  box-shadow: var(--shadow);
}
.swatch { min-height: 166px; display: flex; flex-direction: column; justify-content: space-between; padding: 1rem; }
.swatch::before { content: ""; position: absolute; inset: 0; background: var(--swatch); opacity: 0.92; }
.swatch span, .swatch strong { position: relative; color: var(--swatch-ink, var(--ink)); }
.swatch span { font-family: "Geist Mono", ui-monospace, monospace; font-size: 0.78rem; color: var(--swatch-muted, currentColor); }
.component-tile { padding: 1.15rem; min-height: 210px; }
.component-tile h3 { margin-bottom: 0.35rem; }
.component-tile p { color: var(--muted); }
.component-stack { display: grid; gap: 0.85rem; margin-top: 1rem; }
.ui-input-group { display: grid; gap: 0.45rem; }
.ui-input-group label { font-weight: 400; letter-spacing: -0.02em; }
.ui-input-group small { color: var(--muted-2); }
.ui-input, .ui-select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(16, 17, 19, 0.72);
  color: var(--ink);
  padding: 0.75rem 0.9rem;
  font: inherit;
}
.ui-input:focus, .ui-select:focus { outline: 3px solid rgba(255, 172, 46, 0.28); outline-offset: 2px; border-color: var(--copper); }
.ui-input[aria-invalid="true"] { border-color: var(--ember); }
.ui-error { color: var(--copper); font-size: 0.9rem; }
.ui-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0.35rem; border: 1px solid var(--line); border-radius: var(--radius-pill); background: rgba(255, 255, 255, 0.045); }
.ui-tab { border: 0; border-radius: var(--radius-pill); padding: 0.58rem 0.88rem; background: transparent; color: var(--muted); font: inherit; font-weight: 400; }
.ui-tab[aria-selected="true"] { background: var(--accent-soft); color: var(--ink); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1); }
.status-row { display: flex; flex-wrap: wrap; gap: 0.55rem; align-items: center; }
.status-badge { display: inline-flex; gap: 0.45rem; align-items: center; width: fit-content; padding: 0.42rem 0.7rem; border-radius: var(--radius-pill); border: 1px solid var(--line); background: rgba(255, 255, 255, 0.055); color: var(--muted); font-weight: 400; }
.status-badge::before { content: ""; width: 0.52rem; height: 0.52rem; border-radius: var(--radius-pill); background: var(--glow); box-shadow: 0 0 18px rgba(160, 224, 171, 0.36); }
.state-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.state-panel { padding: 1rem; min-height: 190px; }
.skeleton-line { height: 0.8rem; border-radius: var(--radius-pill); background: linear-gradient(90deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.08)); background-size: 220% 100%; animation: headline-sheen 2.4s ease-in-out infinite; }
.empty-symbol { width: 46px; height: 46px; border-radius: 16px; border: 1px solid var(--line); background: radial-gradient(circle at 68% 30%, rgba(255, 255, 255, 0.25), transparent 42%), rgba(255, 255, 255, 0.055); margin-bottom: 0.9rem; }
.metric-strip { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 0.8rem; align-items: end; }
.metric-number { display: block; font-family: "Geist Mono", ui-monospace, monospace; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1; color: var(--accent-strong); }
.code-panel { margin-top: 1rem; padding: 1rem; color: var(--muted); font-family: "Geist Mono", ui-monospace, monospace; font-size: 0.82rem; white-space: pre-wrap; }
.component-do-list { display: grid; gap: 0.55rem; margin: 1rem 0 0; padding: 0; list-style: none; color: var(--muted); }
.component-do-list li { padding-left: 1.1rem; position: relative; }
.component-do-list li::before { content: ""; position: absolute; left: 0; top: 0.75em; width: 0.36rem; height: 0.36rem; border-radius: var(--radius-pill); background: var(--copper); }
@media (max-width: 980px) {
  .library-hero, .token-grid, .component-grid, .state-grid { grid-template-columns: 1fr; }
}