/* Seven Oak Labs site v7: product-led like the category leader, calm and serious. Inter only (self-hosted). */
@font-face { font-family: "InterV"; src: url("/fonts/inter.woff2") format("woff2-variations"); font-weight: 100 900; font-display: swap; }

:root {
  color-scheme: light;
  --ink: #0B0F17;
  --ink-2: #4B5462;
  --ink-3: #6E7785;
  --line: #E6E8EC;
  --line-2: #F0F2F5;
  --grey: #F5F6F8;
  --blue: #2E5BFF;
  --blue-2: #1F47E0;
  --blue-tint: #EEF2FF;
  --font: "InterV", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --wrap: 1200px;
  --sec: clamp(72px, 9vw, 120px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }
body { margin: 0; background: #fff; color: var(--ink); font: 400 17px/1.6 var(--font); font-feature-settings: "tnum" 1, "cv11" 1; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; color: var(--ink); font-weight: 650; }
h1 { font-size: clamp(38px, 4.6vw, 60px); line-height: 1.05; letter-spacing: -0.035em; }
h2 { font-size: clamp(30px, 3.2vw, 44px); line-height: 1.1; letter-spacing: -0.03em; }
h3 { font-size: 18px; line-height: 1.35; font-weight: 600; letter-spacing: -0.012em; }
p { margin: 0; }
img { max-width: 100%; display: block; }
.wrap { max-width: calc(var(--wrap) + 48px); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: 16px; top: -60px; background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 8px; z-index: 30; }
.skip:focus { top: 12px; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sub { margin-top: 18px; color: var(--ink-2); font-size: 18px; max-width: 34em; }

/* ---------- Logo and nav ---------- */
.logo { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.mark { width: 36px; height: 36px; flex: none; }
.wm b { display: block; font-weight: 850; font-size: 18px; letter-spacing: .07em; line-height: 1; color: var(--ink); }
.wm i { display: block; font-style: normal; font-weight: 700; font-size: 10px; letter-spacing: .5em; line-height: 1; color: var(--blue); margin-top: 6px; }
.top { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 16px; }
.top nav { display: flex; align-items: center; gap: 30px; }
.navlink { color: var(--ink-2); text-decoration: none; font-size: 15px; font-weight: 550; }
.navlink:hover { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 26px; border-radius: 999px; font: 600 16px/1 var(--font); text-decoration: none; white-space: nowrap; border: 1.5px solid transparent; transition: background-color .15s ease, border-color .15s ease, color .15s ease; }
.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 8px 20px -10px rgba(46,91,255,.7); }
.btn-blue:hover { background: var(--blue-2); }
.btn-outline { color: var(--ink); border-color: #CDD2DA; }
.btn-outline:hover { border-color: var(--ink); }
.btn-white { background: #fff; color: var(--ink); }
.btn-white:hover { background: var(--blue-tint); }
.btn-sm { min-height: 42px; padding: 0 20px; font-size: 14.5px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 28px; }
.textlink { font-weight: 600; text-decoration: none; color: var(--ink); }
.textlink:hover { color: var(--blue); }
.textlink span { display: inline-block; transition: transform .15s ease; }
.textlink:hover span { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 6vw, 88px) 0 clamp(40px, 5vw, 64px); background: var(--grey); }
.hero-grid { display: grid; gap: 56px; align-items: center; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1060px) { .hero-grid { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 48px; } }
.kicker { font-size: 14px; font-weight: 650; color: var(--blue); margin-bottom: 18px; }
.hero h1 { max-width: 11em; }
.lede { margin: 22px 0 34px; font-size: clamp(18px, 1.4vw, 20px); color: var(--ink-2); max-width: 31em; }
.hero-note { margin-top: 26px; font-size: 14.5px; color: var(--ink-3); }
.sample-note { margin-top: 18px; font-size: 13px; color: var(--ink-3); text-align: right; }

/* Devices: real calculator and PDF, built in HTML with engine figures. */
.devices { position: relative; padding: 0 0 40px 0; min-width: 0; }
.tablet { width: 92%; border: 12px solid #12161E; border-radius: 26px; background: #12161E; box-shadow: 0 50px 90px -40px rgba(11,15,23,.55); }
.tablet .screen { background: #fff; border-radius: 12px; overflow: hidden; }
.ui-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px 11px; border-bottom: 3px solid #1d4e89; font-size: 12px; font-weight: 600; color: #1d4e89; }
.ui-head img { height: 30px; width: auto; }
.ui-tabs { display: flex; border-bottom: 1px solid var(--line); font-size: 12.5px; font-weight: 600; color: var(--ink-3); }
.ui-tabs span { flex: 1; text-align: center; padding: 10px 4px; }
.ui-tabs .on { color: #1d4e89; box-shadow: inset 0 -2px 0 #1d4e89; }
.ui-body { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 16px; padding: 16px 18px 20px; }
.ui-form { display: grid; gap: 10px; align-content: start; }
.ui-form label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; font-weight: 600; color: var(--ink-2); }
.ui-form span { font-size: 13.5px; font-weight: 600; color: var(--ink); border: 1px solid #D5DAE1; border-radius: 6px; padding: 8px 10px; }
.ui-net { background: #1d4e89; color: #fff; border-radius: 8px; padding: 10px 12px; display: flex; flex-direction: column; margin-bottom: 8px; }
.ui-net small { font-size: 11px; opacity: .85; font-weight: 600; }
.ui-net b { font-size: 21px; font-weight: 750; letter-spacing: -0.01em; }
.ui-out dl { margin: 0; }
.ui-out dl div { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--line-2); font-size: 12px; }
.ui-out dt { color: var(--ink-2); }
.ui-out dd { margin: 0; font-weight: 650; }

.phone { position: absolute; right: 0; bottom: 0; width: 34%; min-width: 210px; border: 9px solid #12161E; border-radius: 34px; background: #12161E; box-shadow: 0 50px 80px -30px rgba(11,15,23,.6); }
.phone .screen { background: #fff; border-radius: 25px; padding: 22px 14px 16px; min-height: 360px; }
.pdf-head { padding-bottom: 8px; border-bottom: 2px solid #1d4e89; }
.pdf-head img { height: 22px; width: auto; }
.pdf-title { margin: 10px 0 6px; font-size: 13px; font-weight: 700; color: #1d4e89; }
.pdf-rows { margin: 0; }
.pdf-rows div { display: flex; justify-content: space-between; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--line-2); font-size: 11px; }
.pdf-rows dt { color: var(--ink-2); }
.pdf-rows dd { margin: 0; font-weight: 650; }
.pdf-net { margin-top: 10px; background: #1d4e89; color: #fff; border-radius: 8px; padding: 8px 10px; display: flex; flex-direction: column; }
.pdf-net small { font-size: 10px; font-weight: 600; opacity: .85; }
.pdf-net b { font-size: 17px; font-weight: 750; }
.pdf-fine { margin-top: 8px; font-size: 9.5px; line-height: 1.4; color: var(--ink-3); }
.pdf-btn { display: block; margin-top: 12px; text-align: center; font-size: 11.5px; font-weight: 650; color: #fff; background: #1d4e89; border-radius: 8px; padding: 8px; }

/* ---------- Sections ---------- */
.section { padding: var(--sec) 0; }
.section.grey { background: var(--grey); }
.head-center { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.head-center p { margin-top: 16px; color: var(--ink-2); font-size: 18px; }

.est-grid { display: grid; gap: 40px; align-items: center; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .est-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 64px; } }
.est-view { background: var(--grey); border-radius: 18px; padding: clamp(24px, 4vw, 48px); min-width: 0; }
.panel[hidden] { display: none; }
.est-grid:not(.js-tabs) .panel + .panel { margin-top: 24px; }
.doc { background: #fff; border-radius: 10px; padding: 22px 24px 20px; box-shadow: 0 30px 60px -36px rgba(11,15,23,.4), 0 1px 3px rgba(11,15,23,.06); max-width: 520px; margin: 0 auto; }
.doc-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 12px; border-bottom: 2px solid #1d4e89; margin-bottom: 8px; }
.doc-head img { height: 30px; width: auto; }
.doc-head span { font-size: 13px; font-weight: 700; color: #1d4e89; }
.doc-rows { margin: 0; }
.doc-rows div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line-2); font-size: 14.5px; }
.doc-rows dt { color: var(--ink-2); }
.doc-rows dd { margin: 0; font-weight: 650; white-space: nowrap; }
.doc-rows .sum { border-bottom: 0; }
.doc-rows .sum dt { color: var(--ink); font-weight: 600; }
.doc-net { margin-top: 10px; background: #1d4e89; color: #fff; border-radius: 9px; padding: 13px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.doc-net span { font-size: 13.5px; font-weight: 600; }
.doc-net b { font-size: 22px; font-weight: 750; }
.doc-fine { margin-top: 10px; font-size: 12.5px; color: var(--ink-3); }

.est-list { display: grid; gap: 10px; }
.est-list [role="tab"] { appearance: none; text-align: left; font: inherit; color: inherit; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; cursor: pointer; display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; transition: border-color .15s ease, box-shadow .15s ease; }
.est-list [role="tab"]:hover { border-color: #C9CFD8; }
.est-list [role="tab"][aria-selected="true"] { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-tint); }
.est-list .n { grid-row: 1 / span 2; display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--grey); font-size: 14px; font-weight: 700; color: var(--ink-2); }
.est-list [aria-selected="true"] .n { background: var(--blue); color: #fff; }
.est-list .t { font-size: 17.5px; font-weight: 650; letter-spacing: -0.01em; }
.est-list .d { grid-column: 2; font-size: 15px; color: var(--ink-2); line-height: 1.5; }
.est-grid:not(.js-tabs) .est-list .d { display: block; }
.est-foot { margin-top: 10px; font-size: 13.5px; color: var(--ink-3); }

.split { display: grid; gap: 48px; align-items: center; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 72px; } }
.checks { list-style: none; margin: 30px 0 0; padding: 0; display: grid; gap: 14px; }
.checks li { position: relative; padding-left: 34px; color: var(--ink-2); }
.checks li b { color: var(--ink); font-weight: 650; }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 22px; height: 22px; border-radius: 50%; background: var(--blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat; }

.brands { position: relative; display: grid; gap: 18px; }
.brand-card { background: #fff; border-radius: 12px; padding: 20px 22px; border-top: 4px solid var(--b); box-shadow: 0 24px 50px -30px rgba(11,15,23,.35), 0 1px 3px rgba(11,15,23,.05); }
.brand-card.b1 { --b: #1d4e89; }
.brand-card.b2 { --b: #7a1f2b; margin-left: 12%; }
.bc-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.bc-head b { font-size: 17px; font-weight: 700; color: var(--b); letter-spacing: -0.01em; }
.bc-logo { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: var(--b); color: #fff; font-weight: 800; }
.bc-net { background: var(--b); color: #fff; border-radius: 9px; padding: 11px 14px; display: flex; justify-content: space-between; align-items: center; }
.bc-net small { font-size: 13px; font-weight: 600; opacity: .9; }
.bc-net b { font-size: 20px; font-weight: 750; }
.brand-card p { margin-top: 12px; font-size: 13px; color: var(--ink-3); }
.brands-note { font-size: 13px; color: var(--ink-3); text-align: right; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 880px) { .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; } }
.steps li { background: var(--grey); border-radius: 14px; padding: 28px; }
.steps .n { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: var(--ink); color: #fff; font-weight: 700; margin-bottom: 20px; }
.steps p { margin-top: 8px; color: var(--ink-2); font-size: 15.5px; }

.price { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr); background: #fff; border-radius: 18px; padding: clamp(28px, 4vw, 56px); box-shadow: 0 30px 60px -40px rgba(11,15,23,.35); }
@media (min-width: 920px) { .price { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: 64px; align-items: center; } }
.price-big { margin-top: 16px; font-size: clamp(30px, 3vw, 40px); font-weight: 700; letter-spacing: -0.03em; color: var(--blue); }
.price .sub { margin-bottom: 30px; font-size: 16px; }
.included { list-style: none; margin: 0; padding: 0; }
.included li { position: relative; padding: 13px 0 13px 34px; border-bottom: 1px solid var(--line); font-weight: 550; }
.included li:last-child { border-bottom: 0; }
.included li::before { content: ""; position: absolute; left: 0; top: 15px; width: 22px; height: 22px; border-radius: 50%; background: var(--blue-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%232E5BFF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat; }

.faq-split { align-items: start; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 44px 20px 0; font-weight: 600; font-size: 17px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 9px; height: 9px; border-right: 2px solid var(--ink-3); border-bottom: 2px solid var(--ink-3); transform: translateY(-70%) rotate(45deg); transition: transform .15s ease; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details p { padding: 0 0 20px; color: var(--ink-2); }

.closing { background: var(--ink); color: #fff; padding: clamp(64px, 8vw, 104px) 0; }
.closing-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px; }
.closing h2 { color: #fff; max-width: 16em; }
.closing p { margin-top: 14px; color: rgba(255,255,255,.75); font-size: 18px; max-width: 34em; }

/* ---------- Footer ---------- */
.foot { padding: 48px 0 56px; font-size: 14.5px; color: var(--ink-2); border-top: 1px solid var(--line); }
.foot-grid { display: grid; gap: 28px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .foot-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; } }
.foot-about { margin-top: 16px; max-width: 30em; }
.foot-meta p { margin-bottom: 7px; }

/* ---------- Privacy page ---------- */
.legal { max-width: calc(840px + 48px); margin: 0 auto; padding: 56px 24px var(--sec); }
.legal h1 { font-size: clamp(32px, 3.6vw, 44px); margin-bottom: 16px; }
.legal h2 { font-size: 22px; margin: 1.8em 0 .6em; }
.legal p, .legal ul { margin: 0 0 1em; color: var(--ink-2); }
.legal li { margin-bottom: .4em; }

/* ---------- Phones ---------- */
@media (max-width: 960px) { .navlink { display: none; } }
@media (max-width: 640px) {
  .wrap, .legal { padding-left: 20px; padding-right: 20px; }
  .mark { width: 32px; height: 32px; }
  .wm b { font-size: 16px; }
  .wm i { font-size: 9px; }
  .top-inner { height: 66px; }
  .hero { background: var(--grey); padding-bottom: 32px; }
  .cta-row .btn { flex: 1 1 100%; }
  .cta-row { justify-content: center; }
  .devices { padding-bottom: 0; }
  .tablet { width: 100%; border-width: 8px; border-radius: 18px; }
  .ui-body { grid-template-columns: 1fr; }
  .ui-form label:nth-child(n+3) { display: none; }
  .phone { position: relative; width: 66%; margin: -60px 0 0 auto; }
  .sample-note { text-align: left; }
  .brand-card.b2 { margin-left: 0; }
}
@media (max-width: 360px) { .top nav .btn { display: none; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media print { .top { position: static; backdrop-filter: none; } }