:root {
  --bg: #FFFFFF;
  --bg-alt: #F4F6F9;
  --ink: #0B1220;
  --ink-2: #4B5563;
  --muted: #8A94A6;
  --line: #D5DAE1;
  --dark: #070B14;
  --dark-2: #101827;
  --on-dark: #F3F6FA;
  --on-dark-2: #A9B4C4;
  --accent: #0062FF;
  --accent-hover: #0050D6;
  --accent-soft: #5B9BFF;

  --f-head: "Space Grotesk", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, monospace;

  --gutter: clamp(20px, 5.5vw, 80px);
  --section-y: clamp(72px, 9vw, 120px);
}

*, *::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 16px/1.5 var(--f-body); -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, ul, ol, dl, dd, figure, fieldset { margin: 0; padding: 0; }
ul, ol { list-style: none; }
fieldset { border: 0; min-width: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 3px; }
[id] { scroll-margin-top: 24px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--accent); color: #fff; padding: 10px 16px; }
.skip:focus { left: 8px; }

.wrap { width: 100%; max-width: calc(1280px + 2 * var(--gutter)); margin: 0 auto; padding-inline: var(--gutter); }

.i { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn--lg .i, .btn--xl .i { width: 18px; height: 18px; }
.i--20 { width: 20px; height: 20px; }
.i--22 { width: 22px; height: 22px; }
.i--24 { width: 24px; height: 24px; }

/* Typography */
.eyebrow, .tag, .num { font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; }
.eyebrow { color: var(--accent); margin-bottom: 20px; }
.eyebrow--light { color: var(--accent-soft); }
.tag { font-size: 11px; color: var(--muted); }
.num { color: var(--accent); letter-spacing: 0; }
.h1 { font: 600 clamp(40px, 5vw, 64px)/1.04 var(--f-head); letter-spacing: -0.034em; }
.h2 { font: 600 clamp(36px, 4.2vw, 56px)/1.05 var(--f-head); letter-spacing: -0.032em; }
.lead { font-size: clamp(16px, 1.4vw, 18px); line-height: 1.55; color: var(--ink-2); max-width: 640px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 24px; font: 500 15px/1.2 var(--f-body); border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s, color .15s; white-space: nowrap; }
.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--lg { padding: 18px 28px; font-size: 16px; }
.btn--xl { padding: 20px 32px; font-size: 17px; }
.btn--block { width: 100%; }
.btn--primary { background: var(--accent); color: #fff; font-weight: 600; }
.btn--primary:hover { background: var(--accent-hover); }
.btn--outline-light { border-color: rgba(255,255,255,.34); color: var(--on-dark); }
.btn--outline-light:hover { border-color: var(--on-dark); background: rgba(255,255,255,.06); }
.btn--outline-dark { border-color: var(--ink); color: var(--ink); font-weight: 600; }
.btn--outline-dark:hover { background: var(--ink); color: #fff; }
.nav .btn--outline-light { border-color: var(--on-dark); }

.link { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-weight: 600; font-size: 15px; }
.link:hover { text-decoration: underline; text-underline-offset: 4px; }

/* Hero */
.hero { position: relative; min-height: min(860px, 100svh); display: flex; flex-direction: column; justify-content: space-between; background: var(--dark); color: var(--on-dark); overflow: hidden; isolation: isolate; }
.hero__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 70% 50%; z-index: -2; }
.hero__scrim { position: absolute; inset: 0; z-index: -1; background:
  linear-gradient(180deg, rgba(7,11,20,0) 65%, rgba(7,11,20,.9) 100%),
  linear-gradient(90deg, rgba(7,11,20,.96) 0%, rgba(7,11,20,.8) 45%, rgba(7,11,20,0) 100%); }

.nav { height: 88px; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 10; }
.logo { display: inline-flex; align-items: center; gap: 10px; font: 700 20px/1 var(--f-head); letter-spacing: -0.015em; color: var(--on-dark); }
.logo__mark { width: 14px; height: 14px; background: var(--accent); }
.logo--sm { font-size: 16px; }
.logo--sm .logo__mark { width: 12px; height: 12px; }
.nav__menu { display: flex; align-items: center; gap: 36px; }
.nav__menu > a:not(.btn) { font-size: 15px; color: var(--on-dark-2); transition: color .15s; }
.nav__menu > a:not(.btn):hover { color: var(--on-dark); }
.nav__toggle { display: none; background: none; border: 0; color: var(--on-dark); padding: 8px; margin-right: -8px; cursor: pointer; }

.hero__content { padding-block: 48px; }
.hero__content > * { max-width: 760px; }
.hero__title { font: 600 clamp(44px, 6.2vw, 88px)/1 var(--f-head); letter-spacing: -0.034em; margin-bottom: 28px; }
.boxed { display: inline-block; margin-top: 6px; padding: 2px 16px 10px 12px; border: 2px solid var(--accent); }
.hero__sub { max-width: 600px; font-size: clamp(17px, 1.5vw, 20px); line-height: 1.5; color: var(--on-dark-2); margin-bottom: 40px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 16px; }

.hero__index { display: grid; grid-template-columns: repeat(4, 1fr); padding-block: 24px 36px; position: relative; }
.hero__index::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 1px; background: rgba(255,255,255,.15); }
.hero__index a { display: flex; flex-direction: column; gap: 6px; padding-right: 16px; }
.hero__index .num { font-size: 12px; color: var(--accent-soft); }
.hero__index strong { font: 600 18px/1.25 var(--f-head); color: var(--on-dark); }
.hero__index a > span:last-child { font-size: 14px; color: var(--on-dark-2); }
.hero__index a:hover strong { color: var(--accent-soft); }

/* Sections */
.section { padding-block: var(--section-y); }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--dark); color: var(--on-dark); }
.section--dark .lead { color: var(--on-dark-2); }

.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; margin-bottom: 64px; }
.section-head__main { max-width: 760px; }
.section-head__note { max-width: 340px; color: var(--ink-2); line-height: 1.55; }

/* Segment table */
.seg-table__head, .seg-row { display: grid; grid-template-columns: 340px 1fr 340px; gap: 48px; }
.seg-table__head { padding-bottom: 14px; border-bottom: 1px solid var(--ink); font: 12px/1.4 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.seg-row { padding-block: 40px; border-bottom: 1px solid var(--line); }
.seg-row__who { display: flex; flex-direction: column; gap: 14px; }
.seg-row__who h3 { font: 600 22px/1.2 var(--f-head); }
.seg-row__who p { font-size: 15px; line-height: 1.55; color: var(--ink-2); }
.seg-row__promise { padding-top: 28px; display: flex; flex-direction: column; gap: 14px; }
.seg-row__promise .promise { font: 500 clamp(26px, 2.4vw, 34px)/1.12 var(--f-head); letter-spacing: -0.024em; color: var(--ink); }
.seg-row__promise p:not(.promise) { font-size: 17px; line-height: 1.5; color: var(--ink-2); }
.seg-row__offer { padding-top: 28px; display: flex; flex-direction: column; align-items: flex-start; gap: 22px; }
.checks { display: flex; flex-direction: column; gap: 12px; }
.checks li { display: flex; gap: 12px; font-size: 15px; line-height: 1.4; }
.checks .i { color: var(--accent); margin-top: 1px; }

/* Compliance */
.compliance__main { display: grid; grid-template-columns: 520px 1fr; gap: 80px; align-items: center; }
.compliance__copy { display: flex; flex-direction: column; align-items: flex-start; }
.compliance__copy .h2 { font-size: clamp(36px, 3.8vw, 52px); margin-bottom: 24px; }
.compliance__copy .lead { margin-bottom: 32px; }

.layer { display: flex; flex-direction: column; gap: 24px; padding: 20px 28px 28px; border: 1px solid rgba(255,255,255,.12); }
.layer .layer { border-color: rgba(255,255,255,.18); }
.layer .layer .layer { border-color: rgba(255,255,255,.28); }
.layer--core.layer--core { padding: 28px; border: 2px solid var(--accent); background: rgba(0,98,255,.1); }
.layer__label { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.layer__label span { font: 12px/1.3 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-dark-2); white-space: nowrap; }
.layer__label b { font-weight: 400; font-size: 14px; color: var(--on-dark); text-align: right; }
.layer--core .layer__label span { color: var(--accent-soft); }
.layer--core .layer__label b { font: 600 22px/1.2 var(--f-head); }

.deliverables { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 80px; border-top: 1px solid rgba(255,255,255,.15); }
.deliverables li { display: flex; flex-direction: column; gap: 12px; padding: 32px 32px 0 0; }
.deliverables .i { color: var(--accent-soft); }
.deliverables h3 { font: 600 19px/1.25 var(--f-head); }
.deliverables p { font-size: 15px; line-height: 1.5; color: var(--on-dark-2); }

/* Split layout (GPU, partners) */
.split { display: grid; grid-template-columns: 1fr 560px; gap: 96px; align-items: center; }
.split--reverse { grid-template-columns: 600px 1fr; }
.split--reverse .split__copy { order: 2; }
.split__copy { display: flex; flex-direction: column; align-items: flex-start; }
.split__copy .h2 { font-size: clamp(36px, 3.8vw, 52px); margin-bottom: 28px; }
.split__copy .lead { margin-bottom: 28px; }

.steps { width: 100%; padding-top: 12px; }
.steps li { display: flex; gap: 24px; padding-block: 18px; border-top: 1px solid var(--line); }
.steps h3 { font: 600 19px/1.3 var(--f-head); margin-bottom: 4px; }
.steps p { font-size: 15px; color: var(--ink-2); }

.booking { background: var(--bg); border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(11,18,32,.08); }
.booking__head { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 28px; border-bottom: 1px solid var(--line); }
.booking__head h3 { font: 600 18px/1.3 var(--f-head); }
.booking__body { display: flex; flex-direction: column; gap: 12px; padding: 28px; }
.booking__body legend { padding: 0; margin-bottom: 12px; float: left; width: 100%; }
.option { display: flex; align-items: center; gap: 16px; padding: 16px 18px; border: 1px solid var(--line); cursor: pointer; transition: border-color .15s, background .15s; }
.option:hover { border-color: var(--muted); }
.option input { appearance: none; margin: 0; width: 18px; height: 18px; flex: none; border: 1.5px solid var(--line); border-radius: 50%; cursor: pointer; transition: border .15s; }
.option input:checked { border: 5px solid var(--accent); }
.option:has(input:checked) { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); background: rgba(0,98,255,.05); }
.option:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.option__text { display: flex; flex-direction: column; gap: 2px; }
.option__text b { font-size: 16px; font-weight: 600; }
.option__text span { font-size: 14px; color: var(--ink-2); }
.summary { display: flex; flex-direction: column; gap: 10px; padding: 16px 0 4px; }
.summary div { display: flex; justify-content: space-between; gap: 16px; }
.summary dt { font-size: 14px; color: var(--ink-2); }
.summary dd { font: 13px/1.5 var(--f-mono); text-align: right; }

.terms { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.terms li { display: flex; align-items: center; gap: 14px; }
.terms .i { color: var(--accent); }

.code { background: var(--dark-2); color: var(--on-dark); min-width: 0; }
.code__head { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,.1); font: 13px var(--f-mono); color: var(--on-dark-2); }
.code__head .tag { color: rgba(255,255,255,.4); }
.code pre { margin: 0; padding: 28px 24px 32px; overflow-x: auto; font: 14px/1.75 var(--f-mono); counter-reset: ln; }
.code .c { color: #6B7A90; }
.code .d { color: var(--on-dark-2); }
.code .a { color: var(--accent-soft); }

/* Final CTA + footer */
.final { padding-bottom: var(--section-y); }
.final__main { display: grid; grid-template-columns: 1fr 640px; gap: 96px; align-items: start; }
.final .h1 { margin-bottom: 20px; }
.next-steps { margin-top: 40px; border-top: 1px solid rgba(255,255,255,.15); }
.next-steps li { display: flex; gap: 20px; align-items: baseline; padding-block: 16px; border-bottom: 1px solid rgba(255,255,255,.08); font: 500 17px/1.4 var(--f-head); }
.next-steps .num { color: var(--accent-soft); font-size: 12px; }
.final__direct { margin-top: 28px; color: var(--on-dark-2); font-size: 15px; }
.final__direct a { color: var(--on-dark); text-decoration: underline; text-underline-offset: 4px; text-decoration-color: rgba(255,255,255,.35); }
.final__direct a:hover { text-decoration-color: var(--on-dark); }

/* Contact form */
.contact { background: var(--dark-2); border: 1px solid rgba(255,255,255,.12); padding: 36px; display: flex; flex-direction: column; gap: 20px; }
.contact__fields { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field--hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.field label { font: 12px/1.3 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-dark-2); }
.field label span { color: var(--accent-soft); }
.field input, .field select, .field textarea { width: 100%; padding: 13px 14px; background: var(--dark); border: 1px solid rgba(255,255,255,.18); border-radius: 0; color: var(--on-dark); font: 400 16px/1.4 var(--f-body); transition: border-color .15s; }
.field textarea { resize: vertical; min-height: 132px; }
.field select { appearance: none; padding-right: 40px; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A9B4C4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 16px; }
.field ::placeholder { color: #66748A; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: rgba(255,255,255,.34); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent-soft); box-shadow: 0 0 0 1px var(--accent-soft); }
.field.is-invalid input, .field.is-invalid textarea { border-color: #FF7A7A; }
.field__error { font-size: 13px; color: #FF9B9B; }
.field__error:empty { display: none; }
.contact__note { font-size: 13px; color: var(--on-dark-2); }
.contact button[disabled] { opacity: .7; cursor: progress; }
.contact__status { font-size: 15px; line-height: 1.5; }
.contact__status:empty { display: none; }
.contact__status.is-error { color: #FF9B9B; }
.contact__status.is-error a { color: var(--on-dark); text-decoration: underline; }
.contact.is-sent .contact__fields, .contact.is-sent .contact__note, .contact.is-sent button { display: none; }
.contact.is-sent .contact__status { padding: 24px; border: 1px solid var(--accent); background: rgba(0,98,255,.1); color: var(--on-dark); font-size: 17px; }

.footer { background: var(--dark); color: var(--on-dark-2); }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 32px 40px; position: relative; }
.footer__inner::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 1px; background: rgba(255,255,255,.12); }
.footer__links { display: flex; gap: 32px; font-size: 14px; }
.footer__links a:hover { color: var(--on-dark); }
.footer .tag { font-size: 12px; color: var(--on-dark-2); }

/* ≤ 1200px */
@media (max-width: 1200px) {
  .seg-table__head, .seg-row { grid-template-columns: 280px 1fr 280px; gap: 36px; }
  .compliance__main { grid-template-columns: 1fr 1fr; gap: 56px; }
  .split, .split--reverse { grid-template-columns: 1fr 1fr; gap: 56px; }
  .nav__menu { gap: 24px; }
  .final__main { grid-template-columns: 1fr 1fr; gap: 56px; }
}

/* ≤ 960px: tablet */
@media (max-width: 960px) {
  .nav__toggle { display: inline-flex; }
  .nav__menu { position: absolute; top: 76px; left: var(--gutter); right: var(--gutter); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 20px; background: var(--dark-2); border: 1px solid rgba(255,255,255,.12); box-shadow: 0 24px 60px rgba(0,0,0,.4); }
  .nav__menu:not(.is-open) { display: none; }
  .nav__menu > a:not(.btn) { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 16px; color: var(--on-dark); }
  .nav__menu .btn { margin-top: 16px; }

  .hero__index { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }

  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 40px; }

  .seg-table__head { display: none; }
  .seg-table { border-top: 1px solid var(--ink); }
  .seg-row { grid-template-columns: 1fr 1fr; gap: 24px 40px; }
  .seg-row__who { grid-column: 1 / -1; }
  .seg-row__who p { max-width: 640px; }
  .seg-row__promise, .seg-row__offer { padding-top: 0; }

  .compliance__main, .split, .split--reverse { grid-template-columns: 1fr; gap: 56px; }
  .split--reverse .split__copy { order: 0; }
  .booking { max-width: 560px; width: 100%; }
  .deliverables { grid-template-columns: repeat(2, 1fr); margin-top: 64px; }
  .deliverables li { padding-bottom: 8px; }

  .final__main { grid-template-columns: 1fr; gap: 48px; }
  .contact { max-width: 640px; }
  .footer__inner { flex-wrap: wrap; }
  .footer__links { order: 3; width: 100%; flex-wrap: wrap; gap: 12px 24px; }
}

/* ≤ 640px: mobile */
@media (max-width: 640px) {
  .nav { height: 72px; }
  .nav__menu { top: 64px; }
  .logo { font-size: 18px; }
  .hero { min-height: auto; }
  .hero__photo { object-position: 75% 50%; }
  .hero__scrim { background: linear-gradient(180deg, rgba(7,11,20,.55) 0%, rgba(7,11,20,.85) 45%, rgba(7,11,20,.96) 100%); }
  .hero__content { padding-block: 40px 48px; }
  .hero__title { font-size: clamp(28px, 9.4vw, 52px); letter-spacing: -0.03em; }
  .hero .eyebrow { font-size: 12px; letter-spacing: 0.08em; }
  .boxed { padding: 2px 10px 8px 8px; }
  .hero__ctas { flex-direction: column; align-items: stretch; }
  .hero__index { grid-template-columns: 1fr; row-gap: 0; padding-bottom: 24px; }
  .hero__index li { padding-block: 14px; border-bottom: 1px solid rgba(255,255,255,.08); }
  .hero__index li:last-child { border-bottom: 0; }
  .hero__index a { flex-direction: row; flex-wrap: wrap; align-items: baseline; column-gap: 12px; row-gap: 2px; }
  .hero__index a > span:last-child { width: 100%; padding-left: 40px; }
  .hero__index strong { font-size: 17px; }

  .seg-row { grid-template-columns: 1fr; gap: 20px; padding-block: 32px; }

  .layer { padding: 14px 14px 18px; gap: 16px; }
  .layer--core.layer--core { padding: 18px 14px; }
  .layer__label { flex-direction: column; align-items: flex-start; gap: 4px; }
  .layer__label b { text-align: left; }
  .layer--core .layer__label b { font-size: 19px; }

  .deliverables { grid-template-columns: 1fr; }
  .deliverables li { padding: 28px 0 0; }

  .booking__head, .booking__body { padding-inline: 20px; }
  .summary div { flex-direction: column; gap: 0; }
  .summary dd { text-align: left; }

  .code pre { font-size: 12.5px; padding-inline: 18px; }
  .code__head { padding-inline: 18px; }

  .btn--xl { width: 100%; }
  .btn { white-space: normal; text-align: center; }
  .compliance__main > *, .split > * { min-width: 0; }
  .contact { padding: 22px 18px; }
  .contact__fields { grid-template-columns: 1fr; gap: 18px; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

.notfound { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 24px; }

.lang-switch { font: 13px/1 var(--f-mono); letter-spacing: 0.1em; color: var(--on-dark-2); padding: 6px 0; transition: color .15s; }
.lang-switch:hover { color: var(--on-dark); }
@media (max-width: 960px) {
  .nav__menu > .lang-switch { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 14px; color: var(--on-dark); }
}