/* ============================================================
   STREAMABLE FINANCE — Fintech & AI Consultancy
   Design: Clean light & modern, Cabinet Grotesk + Satoshi
   ============================================================ */

/* ── Design Tokens ── */
:root, [data-theme="light"] {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Surfaces */
  --color-bg:              #f8f9fb;
  --color-surface:         #ffffff;
  --color-surface-2:       #f1f4f8;
  --color-surface-offset:  #e8ecf2;
  --color-divider:         #dde2ea;
  --color-border:          #d0d6e0;

  /* Text */
  --color-text:            #111827;
  --color-text-muted:      #4b5563;
  --color-text-faint:      #9ca3af;
  --color-text-inverse:    #f8f9fb;

  /* Primary — deep slate blue */
  --color-primary:         #1a3a5c;
  --color-primary-hover:   #0f2540;
  --color-primary-active:  #091829;

  /* Accent — electric teal */
  --color-accent:          #0ea5c2;
  --color-accent-hover:    #0889a3;
  --color-accent-active:   #066e85;
  --color-accent-highlight:#d0f0f7;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(17,24,39,0.06), 0 1px 2px rgba(17,24,39,0.04);
  --shadow-md: 0 4px 16px rgba(17,24,39,0.08), 0 2px 6px rgba(17,24,39,0.04);
  --shadow-lg: 0 12px 40px rgba(17,24,39,0.12), 0 4px 12px rgba(17,24,39,0.06);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

[data-theme="dark"] {
  --color-bg:              #0d1117;
  --color-surface:         #161b22;
  --color-surface-2:       #1c2230;
  --color-surface-offset:  #1e2736;
  --color-divider:         #252d3a;
  --color-border:          #2d3748;
  --color-text:            #e2e8f0;
  --color-text-muted:      #94a3b8;
  --color-text-faint:      #475569;
  --color-text-inverse:    #0d1117;
  --color-primary:         #93b4d4;
  --color-primary-hover:   #b8ccdf;
  --color-primary-active:  #cddaeb;
  --color-accent:          #22d3ee;
  --color-accent-hover:    #67e8f9;
  --color-accent-active:   #a5f3fc;
  --color-accent-highlight:#0e3340;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0d1117;
    --color-surface:         #161b22;
    --color-surface-2:       #1c2230;
    --color-surface-offset:  #1e2736;
    --color-divider:         #252d3a;
    --color-border:          #2d3748;
    --color-text:            #e2e8f0;
    --color-text-muted:      #94a3b8;
    --color-text-faint:      #475569;
    --color-text-inverse:    #0d1117;
    --color-primary:         #93b4d4;
    --color-primary-hover:   #b8ccdf;
    --color-primary-active:  #cddaeb;
    --color-accent:          #22d3ee;
    --color-accent-hover:    #67e8f9;
    --color-accent-active:   #a5f3fc;
    --color-accent-highlight:#0e3340;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  }
}

/* ── Global Layout ── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.container--narrow {
  max-width: var(--content-default);
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  z-index: 100;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}

.nav--scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-8);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.nav__logo-text span {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav__links a:hover {
  color: var(--color-text);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-sm);
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
}

.btn--accent:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface-2);
}

.btn--lg {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-8);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: none;
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav__mobile-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  background: none;
  border: 1.5px solid var(--color-border);
  cursor: pointer;
}

/* ── Hero Section ── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('./assets/hero_bg.png');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

[data-theme="dark"] .hero__bg {
  opacity: 0.12;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  max-width: 760px;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-highlight);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-10);
  max-width: 60ch;
}

.hero__ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ── Stats bar ── */
.stats {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-8);
}

.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat__number span {
  color: var(--color-accent);
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* ── Section base ── */
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section--alt {
  background: var(--color-surface);
}

.section--deep {
  background: var(--color-primary);
  color: #fff;
}

.section__label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section--deep .section__label {
  color: color-mix(in srgb, #fff 70%, var(--color-accent));
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-5);
}

.section--deep .section__title {
  color: #fff;
}

.section__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 64ch;
  margin-bottom: var(--space-12);
}

.section--deep .section__lead {
  color: color-mix(in srgb, #fff 75%, transparent);
}

/* ── Services Grid ── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.service-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.service-card__body {
  padding: var(--space-8);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-accent);
}

.service-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.service-card__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

/* ── Protocol Section (two-column asymmetric) ── */
.protocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}

.protocol__visual {
  position: relative;
}

.protocol__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #fff;
  background: var(--color-accent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.protocol__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.protocol__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
}

.protocol__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.protocol__feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.protocol__feature-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.protocol__feature-text strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.protocol__feature-text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: none;
}

/* ── Approach / Process ── */
.approach__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.step {
  padding: var(--space-8);
  background: color-mix(in srgb, #fff 8%, transparent);
  border: 1px solid color-mix(in srgb, #fff 15%, transparent);
  border-radius: var(--radius-xl);
}

.step__number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: color-mix(in srgb, #fff 15%, transparent);
  line-height: 1;
  margin-bottom: var(--space-4);
  letter-spacing: -0.04em;
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-3);
}

.step__desc {
  font-size: var(--text-sm);
  color: color-mix(in srgb, #fff 70%, transparent);
  line-height: 1.7;
}

/* ── Testimonials/Quotes ── */
.quotes__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.quote-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
}

.quote-card::before {
  content: '\201C';
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 0.6;
  color: var(--color-accent-highlight);
  position: absolute;
  top: var(--space-6);
  left: var(--space-6);
}

.quote-card__text {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.75;
  font-style: italic;
  margin-top: var(--space-6);
  position: relative;
}

.quote-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.quote-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

.quote-card__name {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.quote-card__role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── Contact Form ── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
}

.contact__info {
  padding-top: var(--space-4);
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact__detail-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__detail-text strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.contact__detail-text span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  box-shadow: var(--shadow-md);
}

.form__group {
  margin-bottom: var(--space-5);
}

.form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form__submit {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-base);
  font-weight: 700;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  margin-top: var(--space-4);
  transition: background var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form__submit:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.form__success {
  display: none;
  text-align: center;
  padding: var(--space-8);
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Footer ── */
.footer {
  background: var(--color-text);
  color: var(--color-text-faint);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-bottom: var(--space-5);
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}

.footer__logo-text span {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer__desc {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-faint);
  text-decoration: none;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}

.footer__social a:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.footer__col-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-5);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-8);
  margin-top: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer__attribution a:hover {
  color: var(--color-accent);
}

/* ── Scroll reveal animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* ── Mobile nav ── */
.nav__mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 49;
  padding: var(--space-24) var(--space-8) var(--space-8);
  flex-direction: column;
  gap: var(--space-6);
}

.nav__mobile-menu.is-open {
  display: flex;
}

.nav__mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }
  .protocol {
    grid-template-columns: 1fr;
  }
  .protocol__visual {
    order: -1;
  }
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav__links,
  .nav__actions .btn {
    display: none;
  }
  .nav__mobile-toggle {
    display: flex;
  }
  .hero__title {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }
  .footer__grid {
    grid-template-columns: 1fr;
  }
  .form__row {
    grid-template-columns: 1fr;
  }
  .approach__steps {
    grid-template-columns: 1fr 1fr;
  }
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .approach__steps {
    grid-template-columns: 1fr;
  }
  .services__grid {
    grid-template-columns: 1fr;
  }
  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
  }
}