*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-paper);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: 60px;
  padding: 0 var(--space-12);
  display: flex;
  align-items: center;
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  user-select: none;
}

/* ── Hero ── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-32) var(--space-12) var(--space-20);
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(50px, 8vw, 94px);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  max-width: 780px;
  color: var(--color-text-primary);
}

/* ── Highlighted word ── */
.highlight {
  color: var(--color-circle);
}

/* ── Hero sub ── */
.hero p {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 440px;
  margin-bottom: var(--space-10);
}

/* ── Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  background: var(--color-accent);
  color: var(--color-surface);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}

.btn:hover       { background: var(--color-circle); opacity: 1; transform: translateY(-1px); }
.btn:active      { background: var(--color-circle); opacity: 0.9; transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--color-circle); outline-offset: 3px; }
.btn:disabled    { opacity: 0.35; cursor: not-allowed; transform: none; }

/* ── Cards section ── */
.cards-section {
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-20) var(--space-12) var(--space-32);
}

/* ── Section label ── */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.section-label::before,
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.section-label span {
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ── Cards ── */
.cards {
  display: flex;
  flex-direction: column;
}

.card {
  padding: var(--space-10) var(--space-8);
  border: 1px solid var(--color-border);
  background: transparent;
  position: relative;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
  cursor: default;
}

.card + .card { margin-top: -1px; }
.card:first-child { border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
.card:last-child  { border-radius: 0 0 var(--radius-sm) var(--radius-sm); }

.card:hover {
  background: oklch(52% 0.17 38 / 0.07);
  border-color: var(--color-circle);
  z-index: 1;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.card-icon {
  width: 22px;
  height: 22px;
  color: var(--color-text-tertiary);
  flex-shrink: 0;
  transition: color var(--dur-fast) var(--ease-out);
}

.card:hover .card-icon {
  color: var(--color-circle);
}

.card h2 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-text-primary);
  transition: color var(--dur-fast) var(--ease-out);
}

.card:hover h2 {
  color: var(--color-circle);
}

.card-num {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  margin-left: var(--space-6);
}

.card p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 56ch;
}

/* ── Footer ── */
footer {
  padding: var(--space-6) var(--space-12);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: oklch(13% 0.008 265 / 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
  padding: var(--space-6);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  width: 100%;
  max-width: 440px;
  position: relative;
  transform: translateY(14px);
  transition: transform var(--dur-slow) var(--ease-out);
  box-shadow: 0 20px 60px oklch(13% 0.008 265 / 0.12);
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  font-size: 20px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  line-height: 1;
  transition: color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}

.modal-close:hover { color: var(--color-text-primary); background: var(--color-surface-hover); }
.modal-close:focus-visible { outline: 2px solid var(--color-circle); outline-offset: 2px; }

.modal h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
  color: var(--color-text-primary);
}

.modal-sub {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* ── Form ── */
#contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.field-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.field-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  display: none;
  padding-left: 2px;
}

.field-error.visible { display: block; }

#contact-form input {
  width: 100%;
  padding: 12px var(--space-4);
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--dur-fast) var(--ease-out);
}

#contact-form input::placeholder { color: var(--color-text-tertiary); }
#contact-form input:focus        { border-color: var(--color-border-strong); }
#contact-form input.invalid      { border-color: var(--color-error); }

.phone-input {
  display: flex;
  align-items: center;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out);
}

.phone-input:focus-within { border-color: var(--color-border-strong); }
.phone-input.invalid       { border-color: var(--color-error); }

.phone-prefix {
  padding: 12px 11px 12px var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  border-right: 1px solid var(--color-border);
  user-select: none;
  white-space: nowrap;
}

.phone-input input {
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  padding-left: 11px !important;
}

.btn-submit {
  width: 100%;
  margin-top: var(--space-2);
  padding: 14px;
  font-size: var(--text-base);
}

.modal-success {
  display: none;
  text-align: center;
  padding: var(--space-6) 0 var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-circle);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  nav, footer { padding-left: var(--space-6); padding-right: var(--space-6); }
  .hero { padding-left: var(--space-6); padding-right: var(--space-6); }
  .cards-section { padding-left: var(--space-6); padding-right: var(--space-6); }
  .modal { padding: var(--space-8) var(--space-6); }
  .hero h1 { letter-spacing: -0.03em; }
}