:root {
  --brand-purple: #007caa;
  --brand-green: #19BF5C;
  --brand-ink: #0F1119;

  --purple-50: #F1EDFF; --purple-100: #E2DAFE; --purple-200: #C7B7FD;
  --purple-300: #A38AFB; --purple-400: #815FF7; --purple-500: #01b2f5;
  --purple-600: #5132DC; --purple-700: #3F25B0; --purple-800: #2E1A82; --purple-900: #1E1158;

  --green-50: #E6FAEE; --green-100: #C3F2D6; --green-200: #88E4AD;
  --green-300: #4CD584; --green-400: #28C76A; --green-500: #19BF5C;
  --green-600: #14A24E; --green-700: #0F8040; --green-800: #0B5F30; --green-900: #073F20;

  --neutral-0: #FFFFFF; --neutral-25: #FAFAFC; --neutral-50: #F4F4F8;
  --neutral-100: #EBEBF1; --neutral-200: #D9D9E2; --neutral-300: #BDBDCB;
  --neutral-400: #94949F; --neutral-500: #6E6E7A; --neutral-600: #4D4D58;
  --neutral-700: #353541; --neutral-800: #1F2030; --neutral-900: #0F1119;

  --bg: var(--neutral-0); --bg-subtle: var(--neutral-25);
  --bg-elevated: var(--neutral-0); --fg: var(--neutral-900);
  --fg-soft: var(--neutral-600); --fg-muted: var(--neutral-400);
  --fg-inverse: var(--neutral-0); --fg-brand: var(--brand-purple);
  --fg-accent: var(--brand-green);
  --border: var(--neutral-100); --border-strong: var(--neutral-200);
  --divider: var(--neutral-100); --surface-hover: var(--neutral-25);

  --font-sans: "Satoshi", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-display: "Satoshi", "Inter", system-ui, sans-serif;
  --w-light: 300; --w-regular: 400; --w-medium: 500; --w-bold: 700; --w-black: 900;
  --fs-12: 12px; --fs-13: 13px; --fs-14: 14px; --fs-15: 15px; --fs-16: 16px;
  --fs-18: 18px; --fs-20: 20px; --fs-24: 24px; --fs-28: 28px; --fs-32: 32px;
  --fs-40: 40px; --fs-48: 48px; --fs-56: 56px;
  --lh-tight: 1.10; --lh-snug: 1.20; --lh-default: 1.45;
  --ls-tight: -0.02em; --ls-snug: -0.01em; --ls-eyebrow: 0.10em;
  --radius-xs: 4px; --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px;
  --radius-xl: 20px; --radius-2xl: 28px; --radius-pill: 999px;
  --shadow-xs: 0 1px 2px rgba(15,17,25,0.04);
  --shadow-sm: 0 1px 2px rgba(15,17,25,0.04), 0 1px 3px rgba(15,17,25,0.06);
  --shadow-md: 0 4px 8px -2px rgba(15,17,25,0.06), 0 2px 4px -2px rgba(15,17,25,0.04);
  --shadow-lg: 0 12px 24px -8px rgba(15,17,25,0.10), 0 4px 8px -4px rgba(15,17,25,0.06);
  --shadow-xl: 0 24px 48px -12px rgba(15,17,25,0.14), 0 8px 16px -8px rgba(15,17,25,0.08);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 120ms; --dur-base: 180ms; --dur-slow: 280ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans); background: var(--bg); color: var(--fg);
  line-height: var(--lh-default); overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--purple-200); color: var(--purple-900); }
:focus-visible { outline: 2px solid var(--brand-purple); outline-offset: 2px; border-radius: 2px; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: var(--w-bold); }
a { color: var(--fg-brand); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: var(--purple-700); }
img { max-width: 100%; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 72px; }
section { position: relative; padding: clamp(72px, 10vw, 120px) 0; }
.dark-zone { background: #0b0c10; color: #f5f6f7; }
section + section { padding-top: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px;
  font-weight: var(--w-bold); font-size: var(--fs-12); letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase; color: var(--fg-brand);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 999px; background: var(--brand-green); box-shadow: 0 0 0 4px rgba(25,191,92,0.18); }
.eyebrow-warn { color: #F5A524; }
.eyebrow-warn::before { background: #E0344B; box-shadow: 0 0 0 4px rgba(224,52,75,0.18); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { margin: 16px 0 16px; font-size: clamp(34px,4.4vw,52px); letter-spacing: var(--ls-tight); }
.section-head h2 em { font-style: normal; color: var(--brand-purple); }
.section-head p { font-size: var(--fs-18); color: var(--fg-soft); margin: 0; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 10px 0;
  transition: padding 280ms var(--ease-out);
}
.nav.at-top { padding: 22px 0; }
.nav.scrolled { padding: 6px 0; }

.nav::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 40px;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.78) 0%, rgba(255,255,255,0.55) 55%,
    rgba(255,255,255,0.15) 85%, transparent 100%);
  backdrop-filter: saturate(160%) blur(14px);
  pointer-events: none; z-index: -1;
  opacity: 0;
  transition: opacity 280ms ease, height 360ms cubic-bezier(.4,0,.2,1);
}
.nav.scrolled::before { opacity: 1; }

.nav.is-on-dark::before {
  background: linear-gradient(180deg,
    rgba(11,12,16,0.85) 0%, rgba(11,12,16,0.55) 55%,
    rgba(11,12,16,0.15) 85%, transparent 100%);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1180px; margin: 0 auto; padding: 0 28px;
  height: 48px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(16px);
  border: 1px solid var(--border);
  border-radius: 18px;
  transition: all 0.3s ease, height 0.3s ease;
}
.nav.at-top .nav-inner {
  height: 58px;
  border-color: transparent;
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
}
.nav.scrolled .nav-inner {
  height: 54px; padding: 0 28px;
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(16px);
  box-shadow: 0 6px 24px -12px rgba(0,0,0,0.12);
}

/* Logo swap */
.nav-logo { display: flex; align-items: center; position: relative; text-decoration: none; }
.nav-logo img { height: 28px; width: auto; transition: height 0.22s, opacity 0.4s; }
.nav-logo .logo-dark { position: absolute; top: 0; left: 0; opacity: 0; }
.nav.at-top .nav-logo img { height: 32px; }
.nav.scrolled .nav-logo img { height: 24px; }

/* ── DARK THEME ── */
.nav.is-on-dark .nav-inner { background: transparent; border-color: transparent; backdrop-filter: none; }
.nav.is-on-dark.at-top .nav-inner { background: transparent; border-color: transparent; }
.nav.is-on-dark.scrolled .nav-inner {
  background: #14161e;
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 12px 30px -16px rgba(0,0,0,0.6), 0 2px 6px rgba(0,0,0,0.3);
}
.nav.is-on-dark .nav-logo .logo-light { opacity: 0; }
.nav.is-on-dark .nav-logo .logo-dark { opacity: 1; }
.nav.is-on-dark .navlinks a { color: #e8e8ec; }
.nav.is-on-dark .navlinks a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav.is-on-dark .navlinks a.is-active { color: #fff; background: rgba(255,255,255,0.12); font-weight: var(--w-bold); }
.nav.is-on-dark .navlinks a.btn-nav { color: var(--brand-green); border-color: var(--brand-green); }
.nav.is-on-dark .navlinks a.btn-nav:hover { background: rgba(25,191,92,0.12); }

/* Nav links */
.navlinks { display: flex; gap: 4px; align-items: center; }
.navlinks a {
  display: block; padding: 8px 14px;
  font-weight: var(--w-medium); font-size: var(--fs-14);
  color: var(--fg-soft); border-radius: 10px;
  cursor: pointer; text-decoration: none;
  transition: background 0.12s, color 0.12s;
}
.navlinks a:hover { color: var(--fg-brand); text-decoration: none; background: var(--surface-hover); }
.navlinks a.is-active { color: var(--brand-purple); background: var(--purple-50); font-weight: var(--w-bold); }
.navlinks a.btn-nav { color: var(--fg-brand); border: 1px solid var(--brand-purple); padding: 8px 16px; border-radius: var(--radius-md); font-size: var(--fs-13); }
.navlinks a.btn-nav:hover { background: var(--purple-50); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 10px; background: none; border: none;
  min-width: 44px; min-height: 44px; position: relative; z-index: 1001;
}
.hamburger span { display: block; width: 22px; height: 2.5px; border-radius: 2px; background: var(--brand-purple); transition: all 0.18s; }
.nav.is-on-dark .hamburger span { background: #e8e8ec; }
.hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* Mobile overlay */
.mobile-menu {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(6,6,15,0.96); backdrop-filter: blur(24px);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 28px;
  transform: translateX(100%); transition: transform 0.3s ease;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu a { font-size: 28px; font-weight: 700; color: #fff; text-decoration: none; cursor: pointer; }
.mobile-menu a:hover { color: var(--brand-purple); }

@media (max-width: 860px) {
  .navlinks, .navlinks .btn-nav { display: none; }
  .hamburger { display: flex; }
  .nav-inner, .nav.at-top .nav-inner, .nav.scrolled .nav-inner { padding: 0 16px; }
  .container { padding: 0 16px; }
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 22px; font-weight: var(--w-bold); font-size: var(--fs-15);
  letter-spacing: var(--ls-snug); border-radius: var(--radius-md); border: 1px solid transparent;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: filter var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.btn .arrow { transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary { background: var(--brand-purple); color: var(--fg-inverse); box-shadow: 0 6px 14px -6px rgba(1,178,245,0.55), 0 2px 4px rgba(1,178,245,0.25); }
.btn-primary:hover { background: var(--purple-600); border-color: var(--purple-600); color: var(--fg-inverse); text-decoration: none; }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost { background: transparent; color: var(--brand-green); border-color: var(--brand-green); }
.btn-ghost:hover { background: var(--green-50); color: var(--green-700); text-decoration: none; }
.btn-outline { background: transparent; color: var(--fg-soft); border-color: var(--border-strong); }
.btn-outline:hover { border-color: var(--fg-soft); color: var(--fg); text-decoration: none; }

/* ── HERO ── */
.hero { padding-top: clamp(100px,10vw,140px); padding-bottom: clamp(72px,10vw,100px); text-align: center; }
.hero-pill {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px 8px 12px; background: var(--neutral-25);
  border: 1px solid var(--border); border-radius: var(--radius-pill);
  font-size: var(--fs-13); font-weight: var(--w-medium); color: var(--fg); margin-bottom: 28px;
}
.hero-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand-green); box-shadow: 0 0 0 4px rgba(25,191,92,0.18); }
.hero h1 { font-size: clamp(40px,5vw,64px); font-weight: var(--w-black); color: var(--brand-purple); line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 24px; text-wrap: balance; }
.hero h1 .ink { color: var(--fg); }
.hero .lede { max-width: 560px; margin: 0 auto 36px; font-size: var(--fs-18); color: var(--fg-soft); line-height: 1.55; }
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-diagram { max-width: 960px; margin: 0 auto; border: 1px solid #1a1a2e; border-radius: var(--radius-xl); background: #0b0c10; padding: 36px 24px 24px; position: relative; overflow: hidden; box-shadow: var(--shadow-md); }
.hero-diagram .cap { position: absolute; top: 14px; right: 18px; font-family: "JetBrains Mono", monospace; font-size: 10px; color: #555; letter-spacing: 0.08em; }
.flow-line { stroke: #01b2f5; stroke-width: 2; fill: none; stroke-dasharray: 6 5; animation: dash 20s linear infinite; opacity: 0.5; }
.arrow-head { fill: #01b2f5; opacity: 0.7; }
@keyframes dash { to { stroke-dashoffset: -220; } }
.node-rect { fill: none; stroke: #222; stroke-width: 1.5; }
.node-rect.active { fill: rgba(1,178,245,0.12); stroke: #01b2f5; stroke-width: 1.5; }
.node-rect.green { fill: rgba(25,191,92,0.08); stroke: #19BF5C; stroke-width: 1.5; }
.node-label { font-weight: var(--w-bold); font-size: 13px; fill: #fff; }
.node-sub { font-size: 11px; fill: #aaa; }
.q-label { font-size: 9px; fill: #666; font-style: italic; }

/* ── TRUST STRIP ── */
.trust { padding: 0 0 48px; border-bottom: 1px solid var(--border); }
.trust-row { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: var(--fs-14); color: var(--fg-soft); font-weight: var(--w-medium); }
.trust-item .stat { color: var(--brand-purple); font-weight: var(--w-black); font-size: var(--fs-15); display: inline-block; min-width: 30px; text-align: center; font-variant-numeric: tabular-nums; }
.trust-item .badge { width: 26px; height: 26px; border-radius: 8px; background: var(--purple-50); color: var(--brand-purple); display: inline-flex; align-items: center; justify-content: center; }

/* ── SERVICES ── */
.services { background: var(--bg-subtle); padding-bottom: clamp(72px,10vw,100px); }
.services .section-head { padding-top: 20px; }
.service-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc-card {
  position: relative; padding: 32px; background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius-xl);
  transition: transform 400ms var(--ease-out), box-shadow 400ms var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--purple-200); }
.svc-card .num { font-weight: var(--w-black); font-size: var(--fs-14); color: var(--brand-green); letter-spacing: var(--ls-eyebrow); font-family: var(--font-display); margin-bottom: 12px; }
.svc-card h3 { margin: 0 0 10px; font-size: var(--fs-20); letter-spacing: -0.01em; }
.svc-card p { color: var(--fg-soft); font-size: var(--fs-14); line-height: 1.55; margin: 0 0 14px; }
.svc-card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { padding: 5px 10px; font-size: var(--fs-12); font-weight: var(--w-medium); background: var(--purple-50); color: var(--purple-700); border: 1px solid var(--purple-100); border-radius: var(--radius-sm); white-space: nowrap; }
.tag.green { background: var(--green-50); color: var(--green-700); border-color: var(--green-100); }
.tag.neutral { background: var(--neutral-50); color: var(--fg-soft); border-color: var(--border); }
@media (max-width: 980px) { .service-cards { grid-template-columns: 1fr; } }

/* ── SOLUTIONS ── */
.products { background: var(--bg); }
.sig-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sig-card {
  padding: 28px; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-xl); transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.sig-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--purple-200); }
.sig-card .ind-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: var(--radius-md); background: var(--purple-50); color: var(--brand-purple); margin-bottom: 18px; }
.sig-card h3 { margin: 0 0 8px; font-size: var(--fs-20); letter-spacing: -0.01em; }
.sig-card a { text-decoration: none; color: inherit; }
.sig-card p { color: var(--fg-soft); font-size: var(--fs-14); line-height: 1.55; margin: 0 0 16px; }
.sig-card .sig-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.sig-pill { font-size: var(--fs-12); font-weight: var(--w-bold); padding: 5px 10px; border-radius: var(--radius-pill); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; }
.sig-pill.green { background: var(--green-50); color: var(--green-700); }
.sig-pill.purple { background: var(--purple-50); color: var(--purple-700); }
.sig-pill.amber { background: #FEF4E1; color: #B0781A; }
@media (max-width: 900px) { .sig-grid { grid-template-columns: 1fr; } }

/* ── EXPERTISE ── */
.expertise { background: var(--bg-subtle); }
.exp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-strong); border: 1px solid var(--border-strong); border-radius: var(--radius-md); overflow: hidden; }
.exp-cell { background: var(--bg-elevated); padding: 28px 24px; transition: background var(--dur-fast); }
.exp-cell:hover { background: var(--neutral-25); }
.exp-cell h4 { font-weight: var(--w-black); font-size: var(--fs-12); letter-spacing: var(--ls-eyebrow); color: var(--brand-purple); text-transform: uppercase; margin-bottom: 10px; }
.exp-cell p { color: var(--fg-soft); font-size: var(--fs-14); line-height: 1.55; }
@media (max-width: 800px) { .exp-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .exp-grid { grid-template-columns: 1fr; } }

/* ── WORK ── */
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.work-card { padding: 28px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-xl); transition: border-color var(--dur-fast), transform var(--dur-fast); }
.work-card:hover { border-color: var(--purple-200); transform: translateY(-3px); }
.work-card .yr { font-weight: var(--w-black); font-size: var(--fs-12); color: var(--brand-green); letter-spacing: var(--ls-eyebrow); }
.work-card h4 { font-size: var(--fs-18); margin: 10px 0 8px; }
.work-card p { color: var(--fg-soft); font-size: var(--fs-14); line-height: 1.5; }
@media (max-width: 600px) { .work-grid { grid-template-columns: 1fr; } }

/* ── ABOUT ── */
.about-blk { max-width: 680px; margin: 0 auto; text-align: center; }
.about-blk p { color: #A7A7EF; font-size: var(--fs-16); line-height: 1.65; margin-bottom: 18px; }
.about-blk .stat-row { display: flex; gap: 32px; justify-content: center; margin-top: 28px; flex-wrap: wrap; }
.about-blk .stat b { display: block; font-family: var(--font-display); font-size: 30px; color: var(--fg); }
.about-blk .stat span { font-weight: var(--w-medium); font-size: var(--fs-12); color: var(--fg-muted); letter-spacing: var(--ls-eyebrow); }

/* ── CONTACT ── */
.contact-section { background: var(--bg-subtle); padding: 80px 0 100px; }
.contact-box { max-width: 820px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: clamp(24px,3vw,34px); margin-bottom: 20px; letter-spacing: var(--ls-tight); }
.contact-info h2 em { font-style: normal; color: var(--brand-purple); }
.ci-links { display: flex; flex-direction: column; gap: 12px; }
.ci-links .ci-row { display: flex; align-items: center; gap: 10px; color: var(--fg-soft); font-size: var(--fs-14); }
.ci-links .ci-row i { color: var(--brand-purple); width: 16px; text-align: center; }
.ci-links a { color: var(--fg-brand); }

.contact-form-wrap { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 36px 30px; box-shadow: var(--shadow-md); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: var(--w-bold); font-size: var(--fs-13); color: var(--fg-soft); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.04em; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-md); font-family: var(--font-sans); font-size: var(--fs-14); color: var(--fg); background: var(--bg); transition: border-color var(--dur-fast); resize: vertical; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--brand-purple); outline: none; box-shadow: 0 0 0 3px rgba(1,178,245,0.12); }
.form-group input.error, .form-group textarea.error { border-color: #E0344B; }
.form-msg { font-weight: var(--w-medium); font-size: var(--fs-13); margin-top: 12px; display: none; }
.form-msg.success { color: var(--brand-green); display: block; }
.form-msg.error { color: #E0344B; display: block; }
.recaptcha-note { font-size: var(--fs-11); color: var(--fg-muted); margin-top: 10px; }
.recaptcha-note a { color: var(--fg-soft); }

@media (max-width: 700px) {
  .contact-box { grid-template-columns: 1fr; gap: 32px; }
  .contact-form-wrap { padding: 24px 18px; }
}

/* ── FOOTER ── */
footer { border-top: 1px solid var(--border); padding: 48px 0; }
.footer-inner { max-width: 1180px; margin: 0 auto; padding: 0 72px; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px; font-size: var(--fs-13); color: var(--fg-muted); }
.footer-inner .links { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.footer-inner .links a { color: var(--fg-soft); font-weight: var(--w-medium); }
.footer-inner .links a:hover { color: var(--fg-brand); }
@media (max-width: 640px) { .footer-inner { padding: 0 16px; } footer { padding: 28px 0; } }

/* ── BACK TO TOP ── */
#back-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 999;
  width: 40px; height: 40px; border-radius: 50%; background: var(--brand-purple); color: #fff;
  border: none; cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(1,178,245,0.35);
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
#back-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
#back-top:hover { background: var(--purple-600); }

/* ── REVEAL ── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 60ms; }
.reveal.d2 { transition-delay: 120ms; }
.reveal.d3 { transition-delay: 180ms; }

@media (prefers-reduced-motion:reduce) { .flow-line{animation:none} .reveal{opacity:1;transform:none} }