/* Dubayyi — Apple-inspired design system */
:root {
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --bg: #ffffff;
  --band: #f5f5f7;
  --line: #d2d2d7;
  --link: #0066cc;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --gold: #c8932f;
  --dark: #1d1d1f;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1024px;
  /* aliases used by root/404 pages */
  --creek: #1d1d1f; --body: var(--font); --display: var(--font);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #f5f5f7; --ink-2: #a1a1a6; --ink-3: #8e8e93; --bg: #000; --band: #161617; --line: #424245;
    --link: #2997ff; --dark: #1c1c1e; color-scheme: dark;
  }
}
:root[data-theme="dark"] { --ink: #f5f5f7; --ink-2: #a1a1a6; --ink-3: #8e8e93; --bg: #000; --band: #161617; --line: #424245; --link: #2997ff; --dark: #1c1c1e; color-scheme: dark; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.47 var(--font); letter-spacing: -0.01em; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--bg); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }

/* type scale */
.h-xl { font-size: clamp(40px, 7vw, 80px); line-height: 1.05; font-weight: 700; letter-spacing: -0.035em; margin: 0; }
.h-l  { font-size: clamp(32px, 5vw, 56px); line-height: 1.07; font-weight: 700; letter-spacing: -0.03em; margin: 0; }
.h-m  { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.1; font-weight: 700; letter-spacing: -0.028em; margin: 0; }
.h-s  { font-size: 24px; line-height: 1.17; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 14px; }
.sub  { font-size: clamp(19px, 2.2vw, 24px); line-height: 1.3; margin: 12px auto 0; max-width: 680px; letter-spacing: -0.015em; }
.eyebrow { font-size: 21px; font-weight: 600; margin: 0 0 6px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 40; background: rgba(251, 251, 253, .8); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid rgba(0, 0, 0, .08); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .nav { background: rgba(22, 22, 23, .8); border-bottom-color: rgba(255,255,255,.08); } }
.nav-in { max-width: var(--wrap); margin: 0 auto; height: 48px; display: flex; align-items: center; gap: 28px; padding: 0 22px; font-size: 12.5px; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: -0.03em; color: var(--ink); text-decoration: none !important; }
.brand span { color: var(--gold); }
.nav-links { display: flex; gap: 32px; flex: 1; justify-content: center; }
.nav-links a, .lang a { color: var(--ink); opacity: .8; text-decoration: none; }
.nav-links a:hover, .lang a:hover { opacity: 1; text-decoration: none; }
.nav-links a[aria-current] { opacity: 1; font-weight: 600; }
.lang { display: flex; gap: 14px; }
.lang a[aria-current] { opacity: 1; font-weight: 600; }
.menu-btn { display: none; width: 40px; height: 40px; border: 0; background: none; padding: 0; cursor: pointer; position: relative; }
.menu-btn span { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--ink); transition: transform .25s; }
.menu-btn span:first-child { top: 16px; } .menu-btn span:last-child { top: 23px; }
.menu-open .menu-btn span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-open .menu-btn span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* buttons */
.ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }
.btn { display: inline-block; padding: 11px 22px; border-radius: 980px; font-size: 17px; line-height: 1.2; text-decoration: none !important; transition: background .2s, color .2s; }
.btn-fill { background: var(--blue); color: #fff; }
.btn-fill:hover { background: var(--blue-hover); }
.btn-line { border: 1px solid currentColor; color: #fff; }
.btn-line:hover { background: #fff; color: #000; }

/* photo tiles */
.tile { position: relative; overflow: hidden; text-align: center; color: #fff; background: #000; }
.tile img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tile .shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.6) 0%, rgba(0,0,0,.15) 45%, rgba(0,0,0,0) 70%); }
.tile .copy { position: relative; z-index: 2; padding: 56px 22px 0; max-width: 840px; margin: 0 auto; }
.hero { height: min(92vh, 860px); min-height: 600px; }
.hero .shade { background: linear-gradient(180deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,.15) 42%, rgba(0,0,0,0) 60%, rgba(0,0,0,.35) 100%); }
.hero .copy { padding-top: 12vh; }
.hero-note { position: absolute; bottom: 22px; left: 0; right: 0; z-index: 2; font-size: 12px; color: rgba(255,255,255,.78); margin: 0; }
.wide { height: min(80vh, 720px); min-height: 560px; margin-top: 12px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 12px; }
.half { height: 580px; }
.half .copy { padding-top: 46px; }
.statement { height: min(70vh, 640px); min-height: 480px; display: flex; align-items: center; justify-content: center; }
.statement .shade { background: rgba(0,0,0,.3); }
.statement .copy { padding: 0 22px; }
.guide-hero { height: min(78vh, 700px); min-height: 520px; }
.guide-hero .copy { padding-top: 10vh; }
.guide-hero .shade { background: linear-gradient(180deg, rgba(0,0,0,.66) 0%, rgba(0,0,0,.3) 50%, rgba(0,0,0,.1) 100%); }
.guide-hero .sub { font-size: clamp(17px, 1.9vw, 21px); line-height: 1.4; max-width: 720px; }

/* gray bands & cards */
.band { background: var(--band); padding: 90px 22px 100px; }
.band-head { text-align: center; max-width: 760px; margin: 0 auto 46px; }
.band-head .sub, .firms-teaser .sub, .calc-head .sub { color: var(--ink-2); }
.cards { max-width: var(--wrap); margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--bg); color: var(--ink); border-radius: 22px; padding: 34px 30px 30px; text-decoration: none !important; display: flex; flex-direction: column; min-height: 300px; transition: transform .25s ease, box-shadow .25s ease; }
.card:hover { transform: scale(1.015); box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.card .k { font-size: 14px; color: var(--ink-2); margin: 0 0 10px; }
.card h3 { font-size: 28px; line-height: 1.12; letter-spacing: -0.025em; margin: 0; }
.card .big { font-size: 44px; font-weight: 700; letter-spacing: -0.04em; margin: auto 0 4px; font-variant-numeric: tabular-nums; }
.card .unit { font-size: 14px; color: var(--ink-2); margin: 0; }
.card .go, .firm-go, .more, .result-firms { color: var(--link); }
.card .go { font-size: 17px; margin-top: 18px; }
.card .go::after, .firm-go::after, .more::after { content: " ›"; }

.firms-teaser { text-align: center; padding: 100px 22px; }
.teaser-links { display: flex; justify-content: center; gap: 12px 34px; flex-wrap: wrap; margin-top: 28px; font-size: 19px; }
.teaser-links a::after { content: " ›"; }

.langs { padding: 90px 22px; text-align: center; border-top: 1px solid var(--line); }
.langs .row { display: flex; justify-content: center; gap: 56px; flex-wrap: wrap; margin-top: 34px; }
.langs .row a { color: var(--ink); font-size: 28px; font-weight: 600; letter-spacing: -0.02em; text-decoration: none; }
.langs .row a small { display: block; font-size: 14px; font-weight: 400; color: var(--ink-2); letter-spacing: 0; margin-top: 4px; }

/* guide */
.facts-band { background: var(--band); padding: 34px 22px; }
.facts { max-width: var(--wrap); margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.facts dt { font-size: 14px; color: var(--ink-2); margin-bottom: 6px; }
.facts dd { margin: 0; font-size: 21px; font-weight: 600; line-height: 1.25; letter-spacing: -0.02em; }
.guide-wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 22px 60px; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 0 64px; }
.crumbs { grid-column: 1 / -1; font-size: 12.5px; color: var(--ink-2); padding: 18px 0 8px; }
.crumbs a { color: var(--ink-2); }
.crumbs .updated { color: var(--ink-3); }
.toc { position: sticky; top: 72px; align-self: start; font-size: 14px; padding-top: 44px; }
.toc-title { font-weight: 600; margin: 0 0 10px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc li a { display: block; padding: 6px 0 6px 14px; color: var(--ink-2); line-height: 1.35; }
.toc li a:hover { color: var(--ink); text-decoration: none; }

.prose { max-width: 692px; }
.prose h2 { font-size: 32px; line-height: 1.12; font-weight: 700; letter-spacing: -0.025em; margin: 56px 0 16px; scroll-margin-top: 70px; }
.prose p, .prose li { color: var(--ink); }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 8px 0; }
.prose li::marker { color: var(--ink-3); }
.prose em { color: var(--ink-2); }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 22px 0; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose thead th { font-size: 13px; font-weight: 600; color: var(--ink-2); border-bottom: 1px solid var(--ink); }
.prose tbody td:first-child { font-weight: 600; }
ol.steps { list-style: none; padding: 0; counter-reset: s; }
ol.steps li { counter-increment: s; position: relative; padding: 0 0 18px 48px; margin: 0; }
ol.steps li::before { content: counter(s); position: absolute; left: 0; top: -2px; width: 30px; height: 30px; border-radius: 50%; background: var(--band); color: var(--ink); font-weight: 600; font-size: 15px; display: grid; place-items: center; }

.calc-promo { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2px 20px; margin: 40px 0 8px; padding: 26px 28px; border-radius: 22px; background: var(--dark); color: #fff; text-decoration: none !important; transition: transform .25s; }
.calc-promo:hover { transform: scale(1.01); }
.calc-promo-k { font-size: 13px; color: #a1a1a6; }
.calc-promo-t { grid-column: 1; font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.calc-promo-go { grid-column: 2; grid-row: 1 / span 2; background: var(--blue); color: #fff; padding: 10px 20px; border-radius: 980px; font-size: 15px; }

.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-of-type { border-top: 1px solid var(--line); }
.faq-item summary { cursor: pointer; font-size: 19px; font-weight: 600; letter-spacing: -0.015em; padding: 18px 32px 18px 0; position: relative; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 2px; top: 14px; font-size: 26px; font-weight: 300; color: var(--ink-2); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin: 0 0 20px; color: var(--ink-2); }

/* firms */
.firms-band { background: var(--band); padding: 90px 22px; text-align: center; scroll-margin-top: 48px; }
.firms-in { max-width: var(--wrap); margin: 0 auto; }
.firms-band .sub { color: var(--ink-2); margin-bottom: 40px; }
.firm-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; text-align: left; }
.firm { background: var(--bg); color: var(--ink); border-radius: 18px; padding: 24px 24px 22px; display: flex; flex-direction: column; gap: 8px; min-height: 190px; text-decoration: none !important; transition: transform .25s ease, box-shadow .25s ease; }
.firm:hover { transform: scale(1.015); box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.firm-kind { font-size: 12px; color: var(--ink-2); }
.firm-name { font-size: 21px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; }
.firm-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.firm-tags span { font-size: 12px; background: var(--band); color: var(--ink-2); padding: 3px 9px; border-radius: 980px; }
.firm-go { margin-top: auto; font-size: 15px; padding-top: 8px; }
.firm-featured { background: transparent; border: 1.5px dashed var(--line); }
.firm-featured .firm-desc { font-size: 14px; color: var(--ink-2); }
.firms-sub-h { font-size: 24px; letter-spacing: -0.02em; margin: 56px 0 6px; }
.firms-sub-p { color: var(--ink-2); margin: 0 0 22px; }
.firm-grid-auth .firm { min-height: 140px; }
.firm[hidden] { display: none; }
.firms-note { font-size: 12px; color: var(--ink-3); margin: 28px auto 0; max-width: 640px; }

.sources-wrap { max-width: var(--wrap); margin: 0 auto; padding: 56px 22px 70px; }
.sources { list-style: none; padding: 0; margin: 0; columns: 3; column-gap: 32px; font-size: 14px; }
.sources li { margin: 0 0 10px; break-inside: avoid; }
.sources a::after { content: " ↗"; font-size: 11px; }

/* calculators */
.calc-head { text-align: center; padding: 56px 22px 44px; max-width: 860px; margin: 0 auto; }
.calc-head .crumbs { padding: 0 0 18px; }
.calc-band { background: var(--band); padding: 48px 22px 64px; }
.calc { max-width: var(--wrap); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 420px); gap: 20px; align-items: start; }
.calc-form { background: var(--bg); border-radius: 22px; padding: 32px 30px; display: grid; gap: 26px; }
.field { border: 0; margin: 0; padding: 0; min-width: 0; display: grid; gap: 10px; }
.field > label:not(.check):not(.choice), .field legend { font-weight: 600; font-size: 15px; padding: 0; margin-bottom: 2px; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 20px; }
.field-check { align-self: end; padding-bottom: 12px; }
input[type="text"], input[type="number"] { font: 400 17px/1.3 var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 13px 14px; width: 100%; transition: border-color .15s, box-shadow .15s; }
input[type="text"]:focus, input[type="number"]:focus { border-color: var(--blue); outline: none; box-shadow: 0 0 0 4px rgba(0,113,227,.18); }
.choice, .check { display: flex; gap: 12px; align-items: center; font-size: 16px; font-weight: 400; cursor: pointer; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; transition: border-color .15s, background .15s; }
.choice:has(input:checked), .check:has(input:checked) { border-color: var(--blue); background: rgba(0,113,227,.05); }
.choice input, .check input { width: 18px; height: 18px; margin: 0; accent-color: var(--blue); flex: none; }
.stepper { display: inline-flex; align-items: stretch; border: 1px solid var(--line); border-radius: 12px; width: fit-content; overflow: hidden; }
.stepper button { width: 48px; border: 0; background: var(--band); color: var(--ink); font-size: 20px; cursor: pointer; }
.stepper button:hover { background: var(--line); }
.stepper input { width: 64px; border: 0; border-radius: 0; text-align: center; -moz-appearance: textfield; }
.stepper input:focus { box-shadow: none; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="range"] { width: 100%; accent-color: var(--blue); }

.calc-result { position: sticky; top: 68px; background: var(--dark); color: #f5f5f7; border-radius: 22px; padding: 30px 28px 24px; min-height: 220px; }
.result-label { font-size: 14px; color: #a1a1a6; margin: 0 0 6px; }
.result-value { font-size: clamp(30px, 3.4vw, 40px); line-height: 1.1; font-weight: 700; letter-spacing: -0.035em; margin: 0; font-variant-numeric: tabular-nums; }
.result-alt { margin: 10px 0 0; font-size: 15px; color: #d2d2d7; }
.result-sub { font-size: 13px; color: #a1a1a6; margin: 24px 0 6px; }
.result-rows { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.result-rows li { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-top: 1px solid rgba(255,255,255,.12); }
.result-rows li span:last-child { white-space: nowrap; font-variant-numeric: tabular-nums; }
.result-routes { list-style: none; padding: 0; margin: 8px 0 0; }
.result-routes li { font-weight: 600; font-size: 17px; padding: 11px 0 11px 30px; position: relative; border-top: 1px solid rgba(255,255,255,.12); }
.result-routes li::before { content: "✓"; position: absolute; left: 2px; color: #30d158; font-weight: 700; }
.result-empty { margin: 0; color: #d2d2d7; }
.result-flag { margin: 18px 0 0; padding: 12px 14px; background: rgba(48,209,88,.14); border-radius: 12px; font-size: 14px; }
.result-firms { display: block; margin-top: 22px; padding: 13px 16px; background: var(--blue); color: #fff !important; border-radius: 980px; text-align: center; font-size: 15px; text-decoration: none !important; }
.result-firms:hover { background: var(--blue-hover); }
.result-note { font-size: 12px; color: #86868b; margin: 16px 0 0; line-height: 1.45; }
.after-calc { margin: 0 auto; padding: 56px 22px 80px; }
.after-calc h2 { margin-top: 0; }
.page-body { margin: 0 auto; padding: 0 22px 90px; }
.page-body h2:first-child { margin-top: 0; }

/* footer */
.foot { background: var(--band); color: var(--ink-2); font-size: 12px; line-height: 1.5; }
.foot-in { max-width: var(--wrap); margin: 0 auto; padding: 22px; }
.foot-note { margin: 0 0 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.foot-links { display: flex; gap: 8px 22px; flex-wrap: wrap; margin-bottom: 14px; }
.foot-links a, .foot-copy a { color: var(--ink); }
.foot-copy { margin: 0; }

/* responsive */
@media (max-width: 960px) {
  .guide-wrap { grid-template-columns: 1fr; }
  .toc { display: none; }
  .calc { grid-template-columns: 1fr; }
  .calc-result { position: static; }
  .firm-grid { grid-template-columns: 1fr 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
  .sources { columns: 2; }
}
@media (max-width: 834px) {
  .nav-in { gap: 16px; }
  .nav-links { display: none; position: absolute; top: 48px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg); padding: 8px 22px 24px; border-bottom: 1px solid var(--line); }
  .menu-open .nav-links { display: flex; }
  .nav-links a { font-size: 22px; font-weight: 600; padding: 10px 0; opacity: 1; }
  .lang { margin-left: auto; }
  .menu-btn { display: block; }
  .grid2 { grid-template-columns: 1fr; }
  .half { height: 520px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 240px; }
}
@media (max-width: 600px) {
  .firm-grid { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr; }
  .calc-form { padding: 24px 18px; }
  .calc-band { padding: 24px 12px 40px; }
  .sources { columns: 1; }
  .facts dd { font-size: 18px; }
  .calc-promo { grid-template-columns: 1fr; }
  .calc-promo-go { grid-column: 1; grid-row: auto; justify-self: start; margin-top: 12px; }
  .ctas { flex-direction: column; align-items: center; }
  .btn { min-width: 230px; text-align: center; }
  .hero { min-height: 560px; }
  .firms-band, .band { padding: 64px 16px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } html { scroll-behavior: auto; } }