:root {
  --op-ink: #102a2a;
  --op-ink-2: #173638;
  --op-muted: #5f7475;
  --op-line: #d2dddd;
  --op-canvas: #f3f6f4;
  --op-paper: #ffffff;
  --op-primary: #0c6864;
  --op-hover: #087b75;
  --op-accent: #0d9488;
  --op-mint: #5eead4;
  --op-mint-soft: #ccfbf1;
  --op-mint-pale: #ecfdf8;
  --op-focus: #2dd4bf;
  --op-wrap: 1180px;
  --op-shadow: 0 18px 54px rgba(16, 42, 42, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--op-canvas); color: var(--op-ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; margin: 0; text-rendering: optimizeLegibility; }
button, input { font: inherit; }
a { color: inherit; }
.op-wrap { margin-inline: auto; max-width: var(--op-wrap); padding-inline: 24px; width: 100%; }
.op-skip { background: var(--op-mint); font-weight: 800; left: 16px; padding: 10px 14px; position: fixed; top: -80px; z-index: 100; }
.op-skip:focus { top: 16px; }
a:focus-visible { outline: 3px solid var(--op-focus); outline-offset: 4px; }
.op-eyebrow { color: var(--op-primary); font-size: 11px; font-weight: 800; letter-spacing: .14em; margin: 0 0 20px; text-transform: uppercase; }
.op-eyebrow::before { background: var(--op-mint); content: ""; display: inline-block; height: 8px; margin-right: 9px; width: 8px; }
.op-btn { align-items: center; background: var(--op-primary); border: 1px solid var(--op-primary); color: #fff; display: inline-flex; font-size: 14px; font-weight: 750; gap: 22px; justify-content: center; min-height: 52px; padding: 14px 20px; text-decoration: none; transition: background .18s ease, transform .18s ease; }
.op-btn:hover { background: var(--op-hover); transform: translateY(-2px); }
.op-btn--small { min-height: 42px; padding: 9px 16px; }
.op-btn--light { background: var(--op-paper); border-color: var(--op-paper); color: var(--op-ink); }
.op-actions { align-items: center; display: flex; flex-wrap: wrap; gap: 24px; }
.op-actions > a:not(.op-btn) { font-size: 13px; font-weight: 750; text-decoration: none; }

/* Comparison */
.op-review { min-height: 100vh; }
.op-review-nav { background: rgba(255,255,255,.9); border-bottom: 1px solid var(--op-line); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(16px); }
.op-review-nav__inner { align-items: center; display: flex; justify-content: space-between; min-height: 72px; }
.op-review-nav img { height: 36px; object-fit: contain; width: 125px; }
.op-review-nav span { color: var(--op-muted); font-size: 11px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.op-review-intro { padding-block: 92px 54px; }
.op-review-intro h1 { font-size: clamp(48px, 7vw, 82px); letter-spacing: -.065em; line-height: .98; margin: 0; max-width: 900px; }
.op-review-intro > p:not(.op-eyebrow) { color: var(--op-muted); font-size: 18px; line-height: 1.7; margin: 28px 0 34px; max-width: 760px; }
.op-palette { display: flex; flex-wrap: wrap; gap: 12px; }
.op-palette span { align-items: center; background: #fff; border: 1px solid var(--op-line); display: inline-flex; font-size: 10px; gap: 8px; padding: 6px 10px 6px 6px; }
.op-palette i { background: var(--swatch); border: 1px solid rgba(16,42,42,.12); display: block; height: 22px; width: 22px; }
.op-review-grid { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); padding-bottom: 104px; }
.op-review-card { background: #fff; border: 1px solid var(--op-line); min-width: 0; transition: box-shadow .2s ease, transform .2s ease; }
.op-review-card:hover { box-shadow: var(--op-shadow); transform: translateY(-5px); }
.op-review-card__preview { height: 276px; overflow: hidden; position: relative; }
.op-mini-nav { align-items: center; display: flex; height: 36px; justify-content: space-between; padding: 0 16px; }
.op-mini-nav span { background: var(--op-ink); height: 7px; width: 56px; }
.op-mini-nav i { border: 1px solid currentColor; height: 15px; width: 44px; }
.op-mini-a { align-items: center; background: var(--op-canvas); display: grid; gap: 16px; grid-template-columns: 1.1fr .9fr; height: 240px; padding: 28px; }
.op-mini-a strong { font-size: 25px; letter-spacing: -.055em; line-height: 1; }
.op-mini-a i { background: #fff; border: 1px solid var(--op-line); box-shadow: 0 14px 30px rgba(16,42,42,.12); display: block; height: 150px; position: relative; }
.op-mini-a i::after { background: var(--op-mint); content: ""; height: 42px; left: 16px; position: absolute; right: 16px; top: 38px; }
.op-review-card--b .op-review-card__preview { background: var(--op-ink); color: var(--op-mint); }
.op-review-card--b .op-mini-nav span { background: var(--op-mint); }
.op-mini-b { display: grid; grid-template-columns: 1fr 1fr 1fr; grid-template-rows: auto 1fr; height: 240px; padding: 22px 16px; }
.op-mini-b b { font-size: 9px; letter-spacing: .14em; }
.op-mini-b strong { font-size: 82px; grid-column: 2 / 4; grid-row: 1 / 3; letter-spacing: -.09em; line-height: .8; text-align: right; }
.op-mini-b i { align-self: end; border-left: 1px solid rgba(94,234,212,.3); height: 90px; }
.op-review-card--c .op-review-card__preview { background: var(--op-mint-pale); }
.op-mini-c { height: 240px; padding: 24px; position: relative; }
.op-mini-c strong { font-size: 29px; letter-spacing: -.06em; line-height: .95; }
.op-mini-c span { background: #fff; border: 1px solid var(--op-line); border-radius: 50%; display: block; height: 58px; position: absolute; width: 58px; }
.op-mini-c span:nth-of-type(1) { bottom: 38px; left: 30px; }
.op-mini-c span:nth-of-type(2) { bottom: 78px; left: calc(50% - 29px); }
.op-mini-c span:nth-of-type(3) { bottom: 38px; right: 30px; }
.op-mini-c::after { border-bottom: 1px dashed var(--op-accent); bottom: 66px; content: ""; left: 60px; position: absolute; right: 60px; z-index: 0; }
.op-review-card__body { padding: 28px; }
.op-review-card__body > div { align-items: center; display: flex; justify-content: space-between; }
.op-review-card__body span, .op-review-card__body small { color: var(--op-primary); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.op-review-card__body h2 { font-size: 28px; letter-spacing: -.045em; margin: 42px 0 12px; }
.op-review-card__body p { color: var(--op-muted); font-size: 14px; line-height: 1.65; min-height: 70px; }
.op-review-card__body > a { border-top: 1px solid var(--op-line); display: flex; font-size: 13px; font-weight: 780; justify-content: space-between; margin-top: 24px; padding-top: 18px; text-decoration: none; }
.op-review-basis { border-top: 1px solid var(--op-line); display: grid; gap: 80px; grid-template-columns: .65fr 1.35fr; padding-block: 70px 100px; }
.op-review-basis h2 { font-size: 36px; letter-spacing: -.045em; margin: 0 0 26px; }
.op-review-basis ul { color: var(--op-muted); list-style: none; margin: 0; padding: 0; }
.op-review-basis li { border-top: 1px solid var(--op-line); line-height: 1.55; padding: 14px 0; }
.op-review-basis b { color: var(--op-ink); }

/* Shared proposal shell */
.op-site { padding-top: 42px; }
.op-site.op-production { padding-top: 0; }
.op-switcher { align-items: center; background: var(--op-ink); color: #fff; display: flex; gap: 8px; height: 42px; left: 0; padding: 0 18px; position: fixed; right: 0; top: 0; z-index: 60; }
.op-switcher span { color: #aab9b9; font-size: 9px; letter-spacing: .12em; margin-left: auto; text-transform: uppercase; }
.op-switcher a { align-items: center; display: inline-flex; font-size: 11px; font-weight: 800; height: 28px; justify-content: center; min-width: 28px; text-decoration: none; }
.op-switcher a[aria-current="page"] { background: var(--op-mint); color: var(--op-ink); }
.op-switcher .op-switcher__back { color: var(--op-mint); min-width: auto; }
.op-nav { background: rgba(255,255,255,.92); border-bottom: 1px solid var(--op-line); position: sticky; top: 42px; z-index: 40; backdrop-filter: blur(16px); }
.op-production .op-nav { top: 0; }
.op-nav__inner { align-items: center; display: flex; gap: 40px; min-height: 76px; }
.op-logo img { display: block; height: 38px; object-fit: contain; width: 132px; }
.op-nav nav { display: flex; gap: 28px; margin-left: auto; }
.op-nav nav a { color: var(--op-muted); font-size: 13px; font-weight: 650; text-decoration: none; }
.op-nav nav a:hover { color: var(--op-primary); }

/* A — product first */
.opa-hero { overflow: hidden; padding-block: 84px 92px; position: relative; }
.opa-hero::after { background: var(--op-mint-soft); border-radius: 50%; content: ""; filter: blur(80px); height: 480px; opacity: .6; position: absolute; right: -170px; top: -140px; width: 480px; }
.opa-hero__grid { align-items: center; display: grid; gap: 72px; grid-template-columns: .9fr 1.1fr; position: relative; z-index: 1; }
.opa-hero__copy h1, .opc-hero h1 { font-size: clamp(50px, 6vw, 76px); letter-spacing: -.068em; line-height: .96; margin: 0; }
.opa-hero__copy h1 em, .opc-hero h1 em { color: var(--op-primary); font-style: normal; font-weight: 440; }
.opa-hero__copy > p:not(.op-eyebrow), .opc-hero__grid > div > p:not(.op-eyebrow) { color: var(--op-muted); font-size: 18px; line-height: 1.65; margin: 30px 0; }
.opa-proof { border-top: 1px solid var(--op-line); display: flex; flex-wrap: wrap; gap: 22px; list-style: none; margin: 36px 0 0; padding: 18px 0 0; }
.opa-proof li { color: var(--op-muted); font-size: 11px; }
.opa-proof li::before { color: var(--op-accent); content: "✓"; font-weight: 900; margin-right: 7px; }
.op-passport { background: #fff; border: 1px solid var(--op-line); box-shadow: var(--op-shadow); padding: 24px; transform: rotate(.5deg); }
.op-passport header { align-items: center; border-bottom: 1px solid var(--op-line); display: flex; justify-content: space-between; padding-bottom: 18px; }
.op-passport header div { display: grid; gap: 5px; }
.op-passport header small { color: var(--op-primary); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.op-passport header strong { font-size: 11px; }
.op-passport header > span { background: var(--op-mint-soft); color: var(--op-primary); font-size: 10px; font-weight: 800; padding: 7px 9px; }
.op-passport__product { align-items: center; display: grid; gap: 18px; grid-template-columns: 112px 1fr 64px; padding: 28px 0; }
.op-passport__product small { color: var(--op-accent); font-size: 9px; font-weight: 800; text-transform: uppercase; }
.op-passport__product h2 { font-size: 24px; letter-spacing: -.04em; line-height: 1.05; margin: 6px 0 12px; }
.op-passport__product p { color: var(--op-muted); font-size: 10px; margin: 0; }
.op-product-photo { display: block; height: 102px; object-fit: contain; width: 122px; }
.op-real-qr { background: #fff; border: 1px solid var(--op-line); display: block; padding: 5px; }
.op-real-qr img { display: block; height: 52px; image-rendering: pixelated; width: 52px; }
.op-tool { height: 92px; position: relative; }
.op-tool i:first-child { background: var(--op-primary); clip-path: polygon(8% 8%, 68% 0, 100% 22%, 92% 72%, 40% 85%, 0 58%); inset: 3px 16px 18px 4px; position: absolute; }
.op-tool i:nth-child(2) { background: var(--op-ink); bottom: 0; clip-path: polygon(20% 0, 86% 0, 70% 100%, 0 88%); height: 44px; left: 38px; position: absolute; width: 34px; }
.op-tool i:nth-child(3) { background: #aab9b9; height: 7px; position: absolute; right: 0; top: 34px; width: 36px; }
.op-qr { background: repeating-conic-gradient(var(--op-ink) 0 25%, transparent 0 50%) 50%/10px 10px; border: 6px solid #fff; box-shadow: 0 0 0 1px var(--op-line); height: 62px; width: 62px; }
.op-passport__actions { border-top: 1px solid var(--op-line); display: grid; }
.op-passport__actions a { display: flex; font-size: 12px; font-weight: 750; justify-content: space-between; padding: 15px 0; text-decoration: none; }
.op-passport__actions a + a { border-top: 1px solid var(--op-line); }
.op-passport__actions span { color: var(--op-muted); font-size: 9px; font-weight: 500; }
.opa-value { background: var(--op-ink); color: #fff; padding-block: 72px 92px; }
.opa-value .op-wrap > p { color: #aab9b9; font-size: 13px; margin: 0 0 38px; }
.opa-value .op-wrap > div { border-top: 1px solid rgba(255,255,255,.18); display: grid; grid-template-columns: repeat(3,1fr); }
.opa-value article { padding: 32px 34px 0 0; }
.opa-value article + article { border-left: 1px solid rgba(255,255,255,.18); padding-left: 34px; }
.opa-value article span { color: var(--op-mint); font-size: 10px; }
.opa-value h2 { font-size: 34px; letter-spacing: -.045em; margin: 56px 0 12px; }
.opa-value article p { color: #aab9b9; font-size: 13px; line-height: 1.6; }

/* B — industrial/editorial */
.op-concept-b .op-nav { background: var(--op-ink); border-color: rgba(94,234,212,.2); color: #fff; }
.op-concept-b .op-nav nav a { color: #aab9b9; }
.op-concept-b .op-nav .op-btn { background: var(--op-mint); border-color: var(--op-mint); color: var(--op-ink); }
.opb-hero { background: var(--op-ink); color: #fff; min-height: 720px; overflow: hidden; padding-block: 42px 0; }
.opb-index { border-bottom: 1px solid rgba(94,234,212,.25); color: var(--op-mint); display: flex; font-size: 9px; justify-content: space-between; letter-spacing: .13em; padding-bottom: 16px; }
.opb-hero__grid { align-items: end; display: grid; gap: 76px; grid-template-columns: minmax(0,1.25fr) minmax(260px,.75fr); padding-block: 64px 54px; }
.opb-brand-line { color: var(--op-mint); font-size: 12px; font-weight: 780; letter-spacing: .04em; margin: 0 0 54px; text-transform: uppercase; }
.opb-kicker { color: #aab9b9; font-size: 10px; font-weight: 780; letter-spacing: .13em; margin: 0 0 19px; text-transform: uppercase; }
.opb-hero h1 { font-size: clamp(48px, 5.7vw, 76px); letter-spacing: -.065em; line-height: .94; margin: 0; max-width: 790px; }
.opb-lead { color: #c4d0d0; font-size: 15px; line-height: 1.7; margin: 28px 0 31px; max-width: 690px; }
.opb-hero .op-btn { background: var(--op-mint); border-color: var(--op-mint); color: var(--op-ink); }
.opb-secondary { color: #fff; font-size: 13px; font-weight: 760; text-decoration: none; }
.opb-hero__signal { border-left: 1px solid rgba(94,234,212,.3); padding-left: 30px; }
.opb-hero__signal > span { color: var(--op-mint); font-size: 9px; letter-spacing: .14em; }
.opb-hero__signal ol { list-style: none; margin: 44px 0 0; padding: 0; }
.opb-hero__signal li { border-top: 1px solid rgba(255,255,255,.14); display: grid; gap: 6px; grid-template-columns: 34px 1fr; padding: 20px 0; }
.opb-hero__signal li:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.opb-hero__signal b { color: var(--op-mint); font-size: 9px; grid-row: 1 / 3; }
.opb-hero__signal strong { font-size: 13px; }
.opb-hero__signal small { color: #91a7a7; font-size: 10px; }
.opb-proof { border-top: 1px solid rgba(94,234,212,.25); display: grid; grid-template-columns: repeat(3,1fr); list-style: none; margin: 0; padding: 0; }
.opb-proof li { color: #b9c7c7; font-size: 10px; font-weight: 720; letter-spacing: .07em; padding: 18px 18px 20px 0; text-transform: uppercase; }
.opb-proof li + li { border-left: 1px solid rgba(94,234,212,.25); padding-left: 18px; }
.opb-proof li::before { color: var(--op-mint); content: "●"; font-size: 7px; margin-right: 10px; }
.opb-demo { background: var(--op-paper); padding-block: 112px; }
.opb-demo__grid { align-items: center; display: grid; gap: 96px; grid-template-columns: .82fr 1.18fr; }
.opb-demo__copy > span { color: var(--op-primary); font-size: 10px; letter-spacing: .14em; }
.opb-demo__copy h2 { font-size: clamp(42px, 5vw, 64px); letter-spacing: -.06em; line-height: 1; margin: 42px 0 25px; }
.opb-demo__copy p { color: var(--op-muted); font-size: 15px; line-height: 1.7; margin: 0 0 28px; }
.opb-demo__copy small { border-top: 1px solid var(--op-line); color: var(--op-primary); display: block; font-size: 9px; font-weight: 780; letter-spacing: .1em; padding-top: 17px; text-transform: uppercase; }
.opb-demo .op-passport { box-shadow: 22px 22px 0 var(--op-mint); transform: none; }
.opb-system { background: var(--op-canvas); padding-block: 110px; }
.opb-system header { display: grid; gap: 50px; grid-template-columns: .35fr 1.65fr; margin-bottom: 70px; }
.opb-system header span { color: var(--op-primary); font-size: 10px; letter-spacing: .14em; }
.opb-system h2 { font-size: clamp(42px, 6vw, 70px); letter-spacing: -.06em; line-height: .98; margin: 0; }
.opb-system__grid { border-top: 1px solid var(--op-ink); display: grid; grid-template-columns: .7fr 1.3fr; }
.opb-code { align-items: start; background: var(--op-mint); display: grid; min-height: 440px; padding: 28px; position: relative; }
.opb-code > span { font-size: 9px; letter-spacing: .14em; }
.opb-code .op-qr { height: 112px; justify-self: center; width: 112px; }
.opb-code strong { align-self: end; font-size: 30px; letter-spacing: -.04em; line-height: .95; }
.opb-system ol { list-style: none; margin: 0; padding: 0; }
.opb-system li { border-bottom: 1px solid var(--op-line); display: grid; gap: 24px; grid-template-columns: 50px 1fr; min-height: 146px; padding: 28px 0 24px 28px; }
.opb-system li > span { color: var(--op-accent); font-size: 10px; }
.opb-system li div { align-items: baseline; display: grid; gap: 30px; grid-template-columns: .55fr 1fr; }
.opb-system li b { font-size: 22px; }
.opb-system li p { color: var(--op-muted); font-size: 13px; line-height: 1.6; margin: 0; }
.opb-impact { background: var(--op-paper); padding-block: 108px; }
.opb-impact header { align-items: end; display: grid; gap: 40px; grid-template-columns: .3fr 1.1fr .6fr; margin-bottom: 72px; }
.opb-impact header > span { align-self: start; color: var(--op-primary); font-size: 10px; letter-spacing: .14em; }
.opb-impact header h2 { font-size: clamp(42px, 5vw, 64px); letter-spacing: -.06em; line-height: 1; margin: 0; }
.opb-impact header p { color: var(--op-muted); font-size: 14px; line-height: 1.65; margin: 0; }
.opb-impact__grid { border-bottom: 1px solid var(--op-line); border-top: 1px solid var(--op-line); display: grid; grid-template-columns: repeat(3, 1fr); }
.opb-impact article { min-height: 310px; padding: 28px 30px 34px 0; }
.opb-impact article + article { border-left: 1px solid var(--op-line); padding-left: 30px; }
.opb-impact article > span { color: var(--op-accent); font-size: 10px; }
.opb-impact h3 { font-size: 24px; letter-spacing: -.04em; margin: 88px 0 16px; }
.opb-impact article p { color: var(--op-muted); font-size: 13px; line-height: 1.65; margin: 0; }
.op-concept-b .op-core__grid { grid-template-columns: 1.45fr .55fr; }
.op-concept-b .op-core article:last-child { opacity: .82; }

/* C — human/service journey */
.op-concept-c { background: var(--op-mint-pale); }
.opc-hero { background: linear-gradient(135deg, var(--op-mint-pale), var(--op-canvas)); padding-block: 90px 112px; }
.opc-hero__grid { align-items: center; display: grid; gap: 80px; grid-template-columns: 1fr 1fr; }
.opc-hero .op-btn { margin-top: 4px; }
.opc-orbit { aspect-ratio: 1; border: 1px dashed var(--op-accent); border-radius: 50%; justify-self: end; max-width: 500px; position: relative; width: 100%; }
.opc-orbit::before { border: 1px solid var(--op-line); border-radius: 50%; content: ""; inset: 18%; position: absolute; }
.opc-orbit__center { align-items: center; background: #fff; border: 1px solid var(--op-line); box-shadow: var(--op-shadow); display: flex; flex-direction: column; gap: 12px; inset: 30%; justify-content: center; position: absolute; text-align: center; }
.opc-orbit__center img { height: 58px; width: 58px; }
.opc-orbit__center b { font-size: 12px; }
.opc-orbit > span { background: #fff; border: 1px solid var(--op-line); border-radius: 999px; font-size: 11px; font-weight: 750; padding: 12px 16px; position: absolute; }
.opc-orbit > span:nth-of-type(1) { left: 3%; top: 20%; }
.opc-orbit > span:nth-of-type(2) { right: -1%; top: 30%; }
.opc-orbit > span:nth-of-type(3) { bottom: 9%; left: 34%; }
.opc-journey { background: #fff; padding-block: 104px; }
.opc-journey h2 { font-size: clamp(42px, 6vw, 68px); letter-spacing: -.06em; line-height: 1; margin: 0 0 68px; }
.opc-journey ol { display: grid; grid-template-columns: repeat(4,1fr); list-style: none; margin: 0; padding: 0; }
.opc-journey li { border-top: 1px solid var(--op-line); padding: 24px 24px 0 0; position: relative; }
.opc-journey li + li { border-left: 1px solid var(--op-line); padding-left: 24px; }
.opc-journey li::before { background: var(--op-accent); border: 4px solid #fff; border-radius: 50%; box-shadow: 0 0 0 1px var(--op-accent); content: ""; height: 8px; left: 0; position: absolute; top: -8px; width: 8px; }
.opc-journey li + li::before { left: 24px; }
.opc-journey i { color: var(--op-accent); font-size: 10px; font-style: normal; }
.opc-journey div { display: grid; gap: 12px; margin-top: 68px; }
.opc-journey span { color: var(--op-muted); font-size: 12px; }
.opc-journey b { font-size: 17px; line-height: 1.4; }

/* Shared closing sections */
.op-core { background: var(--op-canvas); padding-block: 110px; }
.op-core header { align-items: end; display: flex; justify-content: space-between; margin-bottom: 56px; }
.op-core header h2 { font-size: clamp(42px, 5vw, 64px); letter-spacing: -.06em; line-height: 1; margin: 0; }
.op-core header h2 span { color: var(--op-primary); font-weight: 420; }
.op-core__grid { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
.op-core article { background: #fff; border: 1px solid var(--op-line); min-height: 480px; padding: 36px; }
.op-core article:first-child { border-top: 8px solid var(--op-primary); }
.op-core article:last-child { background: transparent; }
.op-core article > span { color: var(--op-primary); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.op-core h3 { font-size: 44px; letter-spacing: -.055em; margin: 70px 0 18px; }
.op-core h3 em { color: var(--op-primary); font-style: normal; font-weight: 420; }
.op-core article > p { color: var(--op-muted); font-size: 14px; line-height: 1.65; }
.op-core ul { border-top: 1px solid var(--op-line); list-style: none; margin: 30px 0 0; padding: 12px 0 0; }
.op-core li { border-bottom: 1px solid var(--op-line); font-size: 12px; padding: 10px 0; }
.op-core li::before { color: var(--op-accent); content: "↳"; margin-right: 10px; }
.op-trust { background: var(--op-mint-pale); padding-block: 104px; }
.op-trust__grid { display: grid; gap: 90px; grid-template-columns: .9fr 1.1fr; }
.op-trust h2 { font-size: clamp(40px, 5vw, 60px); letter-spacing: -.06em; line-height: 1; margin: 0; }
.op-trust dl { border-top: 1px solid var(--op-line); margin: 0; }
.op-trust dl > div { border-bottom: 1px solid var(--op-line); display: grid; gap: 18px; grid-template-columns: 38px 1fr; padding: 22px 0; }
.op-trust dt { color: var(--op-accent); font-size: 10px; }
.op-trust dd { display: grid; gap: 7px; margin: 0; }
.op-trust dd b { font-size: 16px; }
.op-trust dd span { color: var(--op-muted); font-size: 12px; line-height: 1.55; }
.op-faq { background: var(--op-paper); padding-block: 108px; }
.op-faq__grid { align-items: start; display: grid; gap: 96px; grid-template-columns: .8fr 1.2fr; }
.op-faq header { position: sticky; top: 110px; }
.op-faq h2 { font-size: clamp(40px, 5vw, 60px); letter-spacing: -.06em; line-height: 1; margin: 0 0 28px; }
.op-faq header > p:last-child { color: var(--op-muted); font-size: 14px; line-height: 1.7; margin: 0; }
.op-faq__list { border-top: 1px solid var(--op-ink); }
.op-faq details { border-bottom: 1px solid var(--op-line); }
.op-faq summary { cursor: pointer; font-size: 18px; font-weight: 760; list-style: none; padding: 25px 42px 25px 0; position: relative; }
.op-faq summary::-webkit-details-marker { display: none; }
.op-faq summary::after { color: var(--op-primary); content: "+"; font-size: 24px; font-weight: 400; position: absolute; right: 4px; top: 19px; }
.op-faq details[open] summary::after { content: "−"; }
.op-faq details p { color: var(--op-muted); font-size: 14px; line-height: 1.7; margin: -5px 44px 25px 0; }
.op-pilot { background: var(--op-primary); color: #fff; padding-block: 90px; }
.op-pilot__grid { align-items: end; display: grid; gap: 100px; grid-template-columns: 1.15fr .85fr; }
.op-pilot .op-eyebrow { color: var(--op-mint); }
.op-pilot h2 { font-size: clamp(44px, 5vw, 64px); letter-spacing: -.06em; line-height: 1; margin: 0; }
.op-pilot__grid > div:last-child > p { color: var(--op-mint-soft); font-size: 15px; line-height: 1.7; margin: 0 0 26px; }
.op-footer { background: var(--op-ink); color: #aab9b9; }
.op-footer .op-wrap { align-items: center; display: grid; gap: 24px; grid-template-columns: 1fr 1fr 1fr; min-height: 150px; }
.op-footer img { height: 36px; object-fit: contain; opacity: .92; width: 125px; }
.op-footer p { font-size: 12px; margin: 0; text-align: center; }
.op-footer a { font-size: 12px; justify-self: end; }

@media (max-width: 900px) {
  .op-review-grid { grid-template-columns: 1fr; }
  .op-review-card { display: grid; grid-template-columns: .9fr 1.1fr; }
  .opa-hero__grid, .opc-hero__grid { grid-template-columns: 1fr; }
  .opc-orbit { justify-self: center; }
  .opb-hero { min-height: 0; }
  .opb-hero__grid, .opb-demo__grid { gap: 48px; grid-template-columns: 1fr; }
  .opb-hero__signal { border-left: 0; border-top: 1px solid rgba(94,234,212,.3); padding: 28px 0 0; }
  .opb-hero__signal ol { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 24px; }
  .opb-hero__signal li, .opb-hero__signal li:last-child { border-bottom: 0; padding-right: 14px; }
  .opb-hero__signal li + li { border-left: 1px solid rgba(255,255,255,.14); padding-left: 14px; }
  .opb-system header, .opb-system__grid { grid-template-columns: 1fr; }
  .opb-system header { gap: 22px; }
  .opb-impact header { align-items: start; grid-template-columns: 1fr; }
  .op-concept-b .op-core__grid { grid-template-columns: 1fr; }
  .op-trust__grid { gap: 48px; grid-template-columns: 1fr; }
  .op-faq__grid { gap: 48px; grid-template-columns: 1fr; }
  .op-faq header { position: static; }
  .opa-value .op-wrap > div, .opc-journey ol { grid-template-columns: 1fr; }
  .opa-value article, .opa-value article + article { border-left: 0; border-top: 1px solid rgba(255,255,255,.18); padding: 26px 0; }
  .opa-value h2 { margin-top: 24px; }
  .opc-journey li, .opc-journey li + li { border-left: 0; padding: 28px 0; }
  .opc-journey li + li::before { left: 0; }
  .opc-journey div { margin-top: 30px; }
}

@media (max-width: 680px) {
  .op-wrap { padding-inline: 18px; }
  .op-review-nav span, .op-nav nav { display: none; }
  .op-review-intro { padding-top: 64px; }
  .op-review-intro h1 { font-size: 48px; }
  .op-review-card { display: block; }
  .op-review-basis { gap: 24px; grid-template-columns: 1fr; }
  .op-switcher { padding-inline: 12px; }
  .op-nav__inner { gap: 14px; }
  .op-nav .op-btn { margin-left: auto; }
  .opa-hero, .opc-hero { padding-block: 64px 78px; }
  .opa-hero__copy h1, .opc-hero h1 { font-size: 48px; }
  .op-passport { padding: 17px; transform: none; }
  .op-passport__product { grid-template-columns: 82px 1fr; }
  .op-product-photo { height: 82px; width: 82px; }
  .op-passport__product .op-qr, .op-passport__product .op-real-qr { display: none; }
  .opb-index span:nth-child(2) { display: none; }
  .opb-hero__grid { padding-block: 48px 42px; }
  .opb-brand-line { margin-bottom: 38px; }
  .opb-hero h1 { font-size: 43px; line-height: .96; }
  .opb-lead { font-size: 14px; }
  .opb-hero .op-actions { align-items: stretch; flex-direction: column; gap: 18px; }
  .opb-hero .op-btn { width: 100%; }
  .opb-hero__signal { display: none; }
  .opb-proof { grid-template-columns: 1fr; }
  .opb-proof li, .opb-proof li + li { border-left: 0; border-top: 1px solid rgba(94,234,212,.18); padding: 14px 0; }
  .opb-demo { padding-block: 78px 92px; }
  .opb-demo__grid { gap: 52px; }
  .opb-demo .op-passport { box-shadow: 10px 10px 0 var(--op-mint); }
  .opb-system { padding-block: 78px; }
  .opb-code { min-height: 360px; }
  .opb-system li div { gap: 10px; grid-template-columns: 1fr; }
  .opb-impact { padding-block: 78px; }
  .opb-impact header { gap: 18px; margin-bottom: 48px; }
  .opb-impact__grid { grid-template-columns: 1fr; }
  .opb-impact article, .opb-impact article + article { border-left: 0; min-height: 0; padding: 28px 0; }
  .opb-impact article + article { border-top: 1px solid var(--op-line); }
  .opb-impact h3 { margin-top: 36px; }
  .opc-orbit { margin-block: 10px; }
  .opc-orbit__center { inset: 27%; }
  .opc-orbit__center img { height: 44px; width: 44px; }
  .opc-orbit > span { font-size: 9px; padding: 8px 10px; }
  .opc-journey { padding-block: 76px; }
  .op-core { padding-block: 78px; }
  .op-core header { align-items: start; flex-direction: column; }
  .op-core__grid, .op-pilot__grid { grid-template-columns: 1fr; }
  .op-core article { min-height: 0; padding: 28px; }
  .op-core h3 { margin-top: 50px; }
  .op-trust { padding-block: 78px; }
  .op-faq { padding-block: 78px; }
  .op-faq summary { font-size: 16px; }
  .op-pilot__grid { gap: 38px; }
  .op-footer .op-wrap { grid-template-columns: 1fr; padding-block: 38px; }
  .op-footer p { text-align: left; }
  .op-footer a { justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}