/* =========================================================
   Vanguard Quantitative Solutions — estilos
   Minimalista · look & feel tech
   ========================================================= */
:root {
  --bg: #ffffff;
  --surface: #f1f4f7;
  --surface-2: #e7ecf0;
  --ink: #1c2b33;
  --ink-2: #465a69;
  --ink-3: #67788a;
  --line: #dee3e9;
  --accent: #0064e0;
  --accent-2: #00c2ff;
  --accent-ink: #ffffff;
  --accent-soft: #e6f0fd;
  --ok: #0a7d4f;
  --err: #c6283a;

  --radius: 24px;
  --radius-sm: 14px;
  --maxw: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --shadow: 0 1px 2px rgba(16, 32, 48, .06), 0 8px 24px rgba(16, 32, 48, .06);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; letter-spacing: -0.02em; line-height: 1.12; font-weight: 600; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 99px; z-index: 100; }
.skip:focus { left: 8px; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(64px, 10vw, 128px) 0; }
.section--tight { padding: clamp(40px, 6vw, 72px) 0; }
.section--surface { background: var(--surface); }

.eyebrow {
  font: 500 12.5px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 18px; height: 1.5px; background: currentColor; }

.h-display { font-size: clamp(40px, 7vw, 80px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.02; }
.h-1 { font-size: clamp(32px, 4.6vw, 52px); letter-spacing: -0.03em; }
.h-2 { font-size: clamp(24px, 3vw, 34px); }
.h-3 { font-size: 20px; letter-spacing: -0.01em; }
.lead { font-size: clamp(18px, 1.8vw, 21px); color: var(--ink-2); max-width: 680px; }
.muted { color: var(--ink-2); }
.grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.stack > * + * { margin-top: 20px; }
.head { display: grid; gap: 18px; margin-bottom: clamp(36px, 5vw, 64px); max-width: 760px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; border: 1px solid transparent;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: #0057c2; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { background: var(--surface); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: #0e1a21; }
.btn svg { width: 16px; height: 16px; }

.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--accent); }
.link-arrow svg { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); height: 68px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 15px; letter-spacing: -0.01em; }
.brand img { width: 32px; height: 32px; }
.brand__name b { font-weight: 600; }
.nav__links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__links > a, .nav__dropbtn {
  padding: 8px 14px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--ink);
  background: none; border: 0; display: inline-flex; align-items: center; gap: 6px;
}
.nav__links > a:hover, .nav__dropbtn:hover, .nav__links > a.is-active { background: var(--surface); }
.nav__cta { height: 40px; padding: 0 18px; }
.nav__burger { display: none; margin-left: auto; width: 42px; height: 42px; border-radius: 999px; border: 0; background: var(--surface); position: relative; }
.nav__burger span { position: absolute; left: 12px; right: 12px; height: 1.6px; background: var(--ink); transition: transform .25s var(--ease); }
.nav__burger span:first-child { top: 17px; }
.nav__burger span:last-child { top: 23px; }
.nav__burger[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

.nav__drop { position: relative; }
.nav__dropbtn svg { transition: transform .2s; }
.nav__drop.is-open .nav__dropbtn svg { transform: rotate(180deg); }
.mega {
  position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(-6px);
  width: min(880px, 92vw);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 28px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px;
  opacity: 0; visibility: hidden; transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
}
.nav__drop.is-open .mega { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega__col h4 { font: 500 11.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: 14px; }
.mega__col a { display: block; padding: 7px 0; font-size: 15px; font-weight: 500; }
.mega__col a:hover { color: var(--accent); }
.mega__col small { display: block; color: var(--ink-3); font-size: 13px; font-weight: 400; line-height: 1.4; }

@media (max-width: 960px) {
  .nav__cta { display: none; }
  .nav__burger { display: block; }
  .nav__links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px;
    max-height: calc(100vh - 68px); overflow-y: auto;
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: all .2s var(--ease);
  }
  .nav__links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__links > a, .nav__dropbtn { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--line); width: 100%; justify-content: space-between; font-size: 17px; }
  .nav__links > a:hover, .nav__dropbtn:hover, .nav__links > a.is-active { background: none; color: var(--accent); }
  .mega { position: static; transform: none; width: 100%; box-shadow: none; border: 0; padding: 8px 0 16px; grid-template-columns: 1fr 1fr; display: none; opacity: 1; visibility: visible; }
  .nav__drop.is-open .mega { display: grid; transform: none; }
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(72px, 12vw, 152px) 0 clamp(56px, 8vw, 104px); }
.hero__grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 10%, transparent 75%);
  opacity: .7;
}
.hero__glow {
  position: absolute; z-index: -1; width: 620px; height: 620px; right: -160px; top: -200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 194, 255, .22), rgba(0, 100, 224, .10) 45%, transparent 70%);
  filter: blur(20px);
  animation: float 12s ease-in-out infinite alternate;
}
@keyframes float { to { transform: translate(-60px, 60px) scale(1.08); } }
.hero__content { display: grid; gap: 28px; max-width: 900px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.hero__ticker {
  margin-top: clamp(48px, 7vw, 88px);
  display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line);
}
.ticker__item { padding: 22px 20px 0 0; }
.ticker__item + .ticker__item { padding-left: 20px; border-left: 1px solid var(--line); }
.ticker__num { font: 500 12px/1 var(--mono); color: var(--ink-3); }
.ticker__label { font-weight: 600; margin-top: 10px; font-size: 16px; }
@media (max-width: 760px) {
  .hero__ticker { grid-template-columns: 1fr 1fr; }
  .ticker__item:nth-child(3) { padding-left: 0; border-left: 0; }
  .ticker__item:nth-child(n+3) { padding-top: 22px; }
}

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border-radius: var(--radius); padding: clamp(24px, 3vw, 36px);
  display: flex; flex-direction: column; gap: 14px; position: relative;
  transition: background .25s var(--ease), transform .25s var(--ease);
}
.card--white { background: #fff; border: 1px solid var(--line); }
a.card:hover { background: var(--surface-2); transform: translateY(-2px); }
a.card--white:hover { background: #fff; border-color: #c9d3dc; box-shadow: var(--shadow); }
.card__icon {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  background: #fff; color: var(--accent); box-shadow: inset 0 0 0 1px var(--line);
}
.card--white .card__icon { background: var(--accent-soft); box-shadow: none; }
.card__icon svg { width: 24px; height: 24px; }
.card__num { font: 500 12.5px/1 var(--mono); color: var(--ink-3); }
.card__foot { margin-top: auto; padding-top: 8px; }
.card .muted { font-size: 16px; }
.tag { font: 500 11.5px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }

/* Feature split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.visual {
  aspect-ratio: 1 / 1; border-radius: var(--radius); position: relative; overflow: hidden;
  background: linear-gradient(140deg, #0b1b2b 0%, #0d2e57 55%, #0064e0 100%);
}
.visual svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.visual__label { position: absolute; left: 24px; bottom: 22px; font: 500 12px/1.5 var(--mono); color: rgba(255,255,255,.75); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step { padding: 28px 24px 8px 0; }
.step + .step { padding-left: 24px; border-left: 1px solid var(--line); }
.step__n { font: 500 13px/1 var(--mono); color: var(--accent); }
.step h3 { margin: 18px 0 10px; }
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(3) { padding-left: 0; border-left: 0; }
  .step:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .step, .step + .step { padding-left: 0; border-left: 0; }
  .step + .step { border-top: 1px solid var(--line); }
}

/* Pills */
.pills { display: flex; flex-wrap: wrap; gap: 10px; }
.pill { padding: 10px 18px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 15px; font-weight: 500; }

/* CTA band */
.cta {
  border-radius: calc(var(--radius) + 8px); padding: clamp(40px, 6vw, 80px);
  background: var(--ink); color: #fff; position: relative; overflow: hidden;
  display: grid; gap: 24px;
}
.cta::after {
  content: ""; position: absolute; width: 520px; height: 520px; right: -140px; bottom: -260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 194, 255, .45), transparent 65%);
}
.cta > * { position: relative; z-index: 1; }
.cta .lead { color: rgba(255, 255, 255, .72); }
.cta .btn--ghost { color: #fff; border-color: rgba(255,255,255,.3); }
.cta .btn--ghost:hover { background: rgba(255,255,255,.08); }

/* Page header */
.page-head { padding: clamp(56px, 9vw, 112px) 0 clamp(32px, 5vw, 56px); position: relative; overflow: hidden; }
.crumbs { font: 500 13px/1 var(--mono); color: var(--ink-3); display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--accent); }

/* Service detail */
.svc-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.svc-row { display: grid; grid-template-columns: 64px 1fr 1.4fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.svc-row .card__num { padding-top: 4px; }
@media (max-width: 760px) { .svc-row { grid-template-columns: 40px 1fr; } .svc-row p { grid-column: 2; } }
.aside { position: sticky; top: 96px; }
.detail { display: grid; grid-template-columns: 1fr 340px; gap: clamp(32px, 5vw, 72px); align-items: start; }
@media (max-width: 960px) { .detail { grid-template-columns: 1fr; } .aside { position: static; } }

/* Team */
.person { display: grid; grid-template-columns: 120px 1fr; gap: 28px; align-items: center; }
.avatar {
  width: 120px; height: 120px; border-radius: 50%;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  color: #fff; display: grid; place-items: center; font-size: 38px; font-weight: 600; letter-spacing: -0.02em;
}
@media (max-width: 560px) { .person { grid-template-columns: 1fr; } }

/* ---------- Forms ---------- */
.form { display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form__row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 8px; }
.field label { font-size: 14px; font-weight: 600; }
.field label span { color: var(--ink-3); font-weight: 400; }
.input {
  width: 100%; height: 52px; padding: 0 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: #fff; font: inherit; font-size: 16px; color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
textarea.input { height: auto; min-height: 140px; padding: 14px 16px; resize: vertical; }
select.input { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23465a69' stroke-width='1.6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.input[aria-invalid="true"] { border-color: var(--err); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); }
.check input { margin-top: 4px; accent-color: var(--accent); }
.notice { padding: 14px 18px; border-radius: var(--radius-sm); font-size: 15px; }
.notice--ok { background: #e6f5ee; color: var(--ok); }
.notice--err { background: #fbeaec; color: var(--err); }
.hp { position: absolute; left: -9999px; }

.contact-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.contact-item { display: flex; gap: 16px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-item .card__icon { flex: none; }
.contact-item small { display: block; font: 500 11.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: 6px; }
.contact-item a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
.footer { background: var(--surface); padding: 72px 0 32px; margin-top: 0; font-size: 15px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
.footer h4 { font: 500 11.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer a:hover { color: var(--accent); }
.footer__bottom { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--ink-3); font-size: 14px; }
.api-status { font: 500 12px/1 var(--mono); display: inline-flex; align-items: center; gap: 8px; }
.api-status i { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); display: inline-block; }
.api-status.is-on i { background: #19b26b; box-shadow: 0 0 0 3px rgba(25,178,107,.18); }
@media (max-width: 860px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer__grid { grid-template-columns: 1fr; } }

/* ---------- Misc ---------- */
.loading { padding: 160px var(--gutter); text-align: center; color: var(--ink-3); font-family: var(--mono); font-size: 14px; }
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.view-enter { animation: viewIn .45s var(--ease); }
@keyframes viewIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}