:root {
  --navy: #10233d;
  --blue: #1769e0;
  --blue-dark: #0d4fab;
  --mint: #5dd6b1;
  --orange: #ff6b3d;
  --mist: #f2f7fb;
  --white: #ffffff;
  --ink: #14202b;
  --muted: #5b6a78;
  --line: #cbd8e2;
  --shadow: 0 22px 60px rgba(16, 35, 61, 0.12);
  --display: "Avenir Next Condensed", "Arial Narrow", "Helvetica Neue", sans-serif;
  --body: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--body); line-height: 1.6; }
a { color: inherit; text-underline-offset: 0.18em; }
button, input, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.skip-link { position: fixed; z-index: 100; top: 0.6rem; left: 0.6rem; padding: 0.6rem 0.9rem; background: var(--white); color: var(--navy); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { min-height: 76px; padding: 0 4vw; display: flex; align-items: center; justify-content: space-between; gap: 2rem; border-bottom: 1px solid var(--line); background: rgba(255,255,255,0.96); position: relative; z-index: 20; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--navy); text-decoration: none; font-weight: 800; letter-spacing: -0.02em; }
.brand-mark { width: 40px; display: flex; align-items: center; justify-content: space-between; position: relative; }
.brand-mark::before { content: ""; position: absolute; height: 3px; left: 4px; right: 4px; background: var(--navy); }
.brand-mark i { display: block; width: 10px; height: 10px; border-radius: 50%; background: var(--white); border: 3px solid var(--navy); z-index: 1; }
.brand-mark i:nth-child(2) { border-color: var(--blue); }
.brand-mark i:nth-child(3) { border-color: var(--orange); }
.site-header nav { display: flex; gap: clamp(1rem, 3vw, 2.4rem); font-size: 0.9rem; font-weight: 700; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { color: var(--blue); }
main { min-height: 70vh; }

.eyebrow { display: block; color: var(--blue-dark); font: 800 0.75rem/1.2 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
h1, h2, h3 { color: var(--navy); font-family: var(--display); line-height: 0.98; letter-spacing: -0.035em; margin-top: 0; }
h1 { font-size: clamp(3rem, 7vw, 6.6rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3.8rem); }
h3 { font-size: 1.65rem; }
p { margin: 0 0 1rem; }

.primary-button { border: 0; display: inline-flex; justify-content: space-between; align-items: center; gap: 2rem; min-width: 220px; padding: 1rem 1.1rem; background: var(--blue); color: var(--white); font-weight: 800; text-decoration: none; box-shadow: 7px 7px 0 var(--navy); transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease; }
.primary-button:hover { transform: translate(3px, 3px); box-shadow: 4px 4px 0 var(--navy); background: var(--blue-dark); }
.primary-button.small { min-width: 0; width: 100%; margin-top: 1rem; box-shadow: none; }

.home-hero { padding: clamp(4rem, 9vw, 9rem) 5vw 5rem; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.75fr); gap: 6vw; align-items: center; background: radial-gradient(circle at 75% 18%, rgba(93,214,177,0.25), transparent 24%), var(--mist); }
.home-thesis h1 { margin: 1.2rem 0 1.6rem; max-width: 900px; }
.home-thesis h1 em { color: var(--blue); font-style: normal; }
.home-thesis p { max-width: 620px; font-size: clamp(1.05rem, 2vw, 1.35rem); color: var(--muted); margin-bottom: 2rem; }
.departure-board { background: var(--navy); color: var(--white); padding: 1.1rem; box-shadow: var(--shadow); transform: rotate(0.8deg); }
.departure-board > span, .departure-board small { display: block; color: var(--mint); font: 700 0.68rem/1.4 var(--mono); letter-spacing: 0.12em; padding: 0.4rem 0.55rem 1rem; }
.departure-board small { color: #a9bfd0; padding: 1rem 0.55rem 0.2rem; }
.departure-board a { display: grid; grid-template-columns: 34px 1fr auto; gap: 0.8rem; align-items: center; padding: 1rem 0.55rem; border-top: 1px solid #2d4662; color: var(--white); text-decoration: none; }
.departure-board a:hover { background: #193453; }
.departure-board a b { color: var(--mint); font-family: var(--mono); }
.departure-board a strong { font-family: var(--display); font-size: 1.1rem; letter-spacing: -0.01em; }
.departure-board a i { color: var(--mint); font: normal 700 0.7rem var(--mono); }

.date-notice { margin: 0; padding: 1.1rem 5vw; display: grid; grid-template-columns: auto 1fr auto; gap: 1.5rem; align-items: center; background: #fff2ed; border-block: 1px solid #ffc5b3; font-size: 0.9rem; }
.date-notice strong { color: #8b2d13; }
.date-notice a { color: #8b2d13; font-weight: 800; }

.tool-cards { padding: 7rem 5vw; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); }
.section-heading { grid-column: 1 / -1; background: var(--white); padding: 0 0 3.5rem; display: grid; grid-template-columns: 1fr 1fr; align-items: end; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2 { margin: 0.8rem 0 0; }
.section-heading p { color: var(--muted); max-width: 420px; justify-self: end; }
.tool-card { background: var(--white); padding: clamp(2rem, 4vw, 4rem) clamp(1.5rem, 3vw, 3rem); text-decoration: none; min-height: 350px; display: flex; flex-direction: column; transition: background 160ms ease, transform 160ms ease; }
.tool-card:hover { background: var(--mist); transform: translateY(-5px); }
.tool-card > span { color: var(--blue); font: 800 0.8rem var(--mono); }
.tool-card h3 { margin: 3rem 0 1rem; }
.tool-card p { color: var(--muted); }
.tool-card b { margin-top: auto; color: var(--blue-dark); }
.trust-band, .method-strip { padding: 6rem 5vw; display: grid; grid-template-columns: 1.15fr 0.85fr auto; gap: 5vw; align-items: end; background: var(--navy); color: var(--white); }
.trust-band h2, .method-strip h2 { color: var(--white); margin: 0.8rem 0 0; }
.trust-band p, .method-strip p { color: #b9c9d6; max-width: 520px; }
.trust-band a, .method-strip a { color: var(--mint); font-weight: 800; white-space: nowrap; }

.source-panel { padding: 6rem 5vw; display: grid; grid-template-columns: 0.75fr 1.25fr; gap: 7vw; background: var(--mist); }
.source-panel h2 { margin-top: 0.8rem; }
.source-panel ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.source-panel li { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.source-panel li a { font-weight: 750; }
.source-panel li span { color: var(--muted); font: 0.72rem var(--mono); }

.tool-hero { padding: 5rem 5vw 3rem; display: grid; grid-template-columns: 1fr auto; gap: 4rem; align-items: end; background: var(--mist); }
.tool-hero h1 { max-width: 1000px; margin: 1rem 0; font-size: clamp(3rem, 6.5vw, 6rem); }
.tool-hero p { max-width: 720px; color: var(--muted); font-size: 1.2rem; }
.route-strip { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; align-items: start; min-width: 330px; }
.route-strip li { flex: 1; position: relative; display: grid; justify-items: center; gap: 0.4rem; color: var(--muted); font: 700 0.66rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }
.route-strip li::before { content: ""; position: absolute; height: 3px; background: var(--line); top: 14px; left: 0; right: 0; }
.route-strip li:first-child::before { left: 50%; }
.route-strip li:last-child::before { right: 50%; }
.route-strip span { width: 30px; height: 30px; display: grid; place-items: center; position: relative; z-index: 1; border-radius: 50%; background: var(--white); border: 3px solid var(--line); }
.route-strip .active span { border-color: var(--blue); color: var(--blue); }

.tool-shell { padding: 5rem 5vw 7rem; display: grid; grid-template-columns: minmax(210px, 0.4fr) minmax(420px, 0.8fr) minmax(360px, 0.7fr); gap: 4vw; align-items: start; }
.tool-intro { position: sticky; top: 2rem; }
.tool-intro h2 { font-size: 2.5rem; margin: 0.8rem 0 1rem; }
.tool-intro p { color: var(--muted); }
.tool-form { border-top: 5px solid var(--blue); background: var(--white); box-shadow: var(--shadow); padding: 2rem; }
.form-grid { display: grid; gap: 1.3rem; }
.tool-form label > span:first-child, .tool-form legend { display: block; color: var(--navy); font-weight: 800; margin-bottom: 0.4rem; }
.tool-form input[type="number"], .tool-form select { appearance: none; width: 100%; border: 1px solid var(--line); border-radius: 0; background: var(--mist); color: var(--ink); padding: 0.8rem; min-height: 50px; }
.tool-form select { background-image: linear-gradient(45deg, transparent 50%, var(--navy) 50%), linear-gradient(135deg, var(--navy) 50%, transparent 50%); background-position: calc(100% - 17px) 21px, calc(100% - 12px) 21px; background-size: 5px 5px; background-repeat: no-repeat; }
.tool-form small { display: block; color: var(--muted); line-height: 1.35; margin-top: 0.35rem; }
.tool-form fieldset { border: 0; padding: 1.3rem 0; margin: 1rem 0; border-block: 1px solid var(--line); }
.tool-form .check { display: inline-flex; align-items: center; gap: 0.4rem; margin-right: 1rem; }
.tool-form .check input { width: 20px; height: 20px; accent-color: var(--blue); }
.tool-form .primary-button { width: 100%; }
.money-input { display: grid; grid-template-columns: auto 1fr; align-items: center; border: 1px solid var(--line); background: var(--mist); }
.money-input b { padding-left: 0.8rem; color: var(--blue-dark); font-family: var(--mono); }
.money-input input { border: 0 !important; }

.result-panel { min-height: 360px; background: var(--navy); color: var(--white); position: sticky; top: 2rem; box-shadow: var(--shadow); }
.result-empty { min-height: 360px; display: grid; place-items: center; align-content: center; gap: 1.4rem; color: #afc0ce; }
.station-pulse { width: 44px; height: 44px; border-radius: 50%; border: 8px solid var(--mint); box-shadow: 0 0 0 12px rgba(93,214,177,0.1); }
.result-panel.has-result { padding: 2rem; border-top: 5px solid var(--mint); }
.result-head > span { color: var(--mint); font: 800 0.72rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.result-head h2 { color: var(--white); font-size: clamp(2.7rem, 5vw, 4.8rem); margin: 0.7rem 0 0.6rem; }
.result-head p { color: #bfd0dd; }
.fare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin: 1.5rem 0; }
.fare-card { border: 1px solid #36506c; padding: 1rem; display: grid; gap: 0.25rem; }
.fare-card.winner { border-color: var(--mint); background: rgba(93,214,177,0.08); }
.fare-card span, .break-even span { color: #afc0ce; font-size: 0.78rem; }
.fare-card strong { color: var(--white); font: 800 1.5rem var(--mono); }
.fare-card small { color: #9fb2c1; }
.reason-list { margin: 1.4rem 0; padding: 0; list-style: none; counter-reset: reasons; }
.reason-list li { counter-increment: reasons; display: grid; grid-template-columns: 26px 1fr; gap: 0.6rem; padding: 0.75rem 0; border-top: 1px solid #2d4662; color: #d5e0e8; font-size: 0.9rem; }
.reason-list li::before { content: counter(reasons); color: var(--mint); font: 800 0.75rem var(--mono); }
.result-actions { display: grid; gap: 0.6rem; margin-top: 1.5rem; }
.result-actions a { color: var(--mint); font-weight: 800; }
.result-note { padding-top: 1.2rem; margin-top: 1.5rem; border-top: 1px solid #2d4662; color: #9fb2c1; font-size: 0.75rem; }
.break-even { background: #193453; padding: 1rem; margin: 1rem 0; }
.break-even strong { display: block; color: var(--white); font-family: var(--mono); font-size: 1.15rem; }
.break-even p { color: #afc0ce; font-size: 0.8rem; margin: 0.35rem 0 0; }
.cash-stack { display: grid; gap: 0.75rem; margin-top: 1.5rem; }
.cash-stack div { position: relative; overflow: hidden; border: 1px solid #36506c; padding: 0.8rem; display: flex; justify-content: space-between; gap: 1rem; }
.cash-stack div::before { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--share); background: rgba(93,214,177,0.08); }
.cash-stack span, .cash-stack strong { position: relative; }
.cash-stack strong { font-family: var(--mono); color: var(--mint); }

.article-hero { padding: 6rem 5vw 5rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 0.45fr); gap: 7vw; align-items: center; background: var(--mist); }
.article-hero h1 { margin: 1rem 0 1.5rem; font-size: clamp(3.1rem, 6.5vw, 6.2rem); }
.article-hero > div > p { color: var(--muted); font-size: 1.2rem; max-width: 780px; }
.answer-card { background: var(--navy); color: var(--white); padding: 2rem; box-shadow: 12px 12px 0 var(--mint); }
.answer-card > span { color: var(--mint); font: 800 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.answer-card p { margin: 1.2rem 0; font-size: 1.05rem; }
.article-layout { padding: 6rem 5vw; display: grid; grid-template-columns: minmax(0, 760px) minmax(240px, 320px); gap: 8vw; justify-content: center; }
.article-content > section { padding: 0 0 3rem; margin-bottom: 3rem; border-bottom: 1px solid var(--line); }
.article-content h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
.article-content p { color: #394956; font-size: 1.08rem; }
.affiliate-callout { margin: 0 0 3rem; padding: 2rem; border: 1px solid #f0be9e; border-top: 5px solid var(--orange); background: #fff7f2; }
.affiliate-callout > span { color: #9f361d; font: 800 0.72rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.affiliate-callout h2 { margin: 0.7rem 0; font-size: clamp(1.9rem, 3vw, 2.6rem); }
.affiliate-callout p { margin-bottom: 1.2rem; }
.affiliate-callout a { display: inline-block; color: var(--white); background: #a63c22; padding: 0.85rem 1rem; font-weight: 850; }
.affiliate-callout small { display: block; max-width: 620px; margin-top: 0.85rem; color: #6d5148; line-height: 1.5; }
.next-decision { padding: 2rem !important; background: var(--mist); border: 0 !important; }
.next-decision h2 { margin-top: 0.8rem; }
.next-decision a { color: var(--blue-dark); font-weight: 800; }
.article-rail { display: grid; gap: 1rem; align-content: start; position: sticky; top: 2rem; }
.rail-card { border-top: 4px solid var(--blue); padding: 1.2rem; background: var(--mist); }
.rail-card p { font: 700 0.85rem/1.5 var(--mono); }
.rail-card a { display: block; padding: 0.65rem 0; border-bottom: 1px solid var(--line); font-weight: 750; }

.text-page { max-width: 850px; margin: 0 auto; padding: 7rem 5vw; }
.text-page h1 { margin: 1rem 0 3rem; font-size: clamp(3.3rem, 7vw, 6.5rem); }
.text-page h2 { margin: 3rem 0 1rem; font-size: 2.4rem; }
.text-page p { color: #394956; font-size: 1.1rem; }

.site-footer { padding: 4rem 5vw 2rem; background: #091827; color: #b8c7d2; display: grid; grid-template-columns: 1fr auto; gap: 3rem; }
.site-footer strong { color: var(--white); }
.site-footer p { max-width: 560px; font-size: 0.85rem; }
.footer-links { display: grid; grid-template-columns: repeat(2, auto); gap: 0.4rem 2rem; align-content: start; }
.footer-links a { color: var(--white); font-size: 0.85rem; }
.footer-date { grid-column: 1 / -1; border-top: 1px solid #263b4d; padding-top: 1.5rem; font-family: var(--mono); }

@media (max-width: 1050px) {
  .tool-shell { grid-template-columns: minmax(360px, 1fr) minmax(340px, 0.85fr); }
  .tool-intro { grid-column: 1 / -1; position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
  .result-panel { position: static; }
  .trust-band, .method-strip { grid-template-columns: 1fr 1fr; }
  .trust-band a, .method-strip a { grid-column: 2; }
}

@media (max-width: 800px) {
  .site-header { min-height: 68px; }
  .site-header nav { display: none; }
  .home-hero, .article-hero, .source-panel { grid-template-columns: 1fr; }
  .home-hero { padding-top: 5rem; }
  .departure-board { transform: none; }
  .date-notice { grid-template-columns: 1fr; gap: 0.3rem; }
  .tool-cards { grid-template-columns: 1fr; padding-block: 5rem; }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading p { justify-self: start; }
  .tool-card { min-height: 280px; }
  .trust-band, .method-strip { grid-template-columns: 1fr; }
  .trust-band a, .method-strip a { grid-column: 1; }
  .tool-hero { grid-template-columns: 1fr; }
  .route-strip { min-width: 0; width: 100%; }
  .tool-shell { grid-template-columns: 1fr; padding-block: 4rem; }
  .tool-intro { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-rail { position: static; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-date { grid-column: 1; }
}

@media (max-width: 520px) {
  h1 { font-size: 3rem; }
  .home-hero, .tool-hero, .article-hero { padding-inline: 1.2rem; }
  .date-notice, .tool-shell, .source-panel, .tool-cards, .trust-band, .method-strip, .article-layout { padding-inline: 1.2rem; }
  .tool-form, .result-panel.has-result { padding: 1.2rem; }
  .fare-grid { grid-template-columns: 1fr; }
  .source-panel li { grid-template-columns: 1fr; }
  .departure-board a { grid-template-columns: 28px 1fr; }
  .departure-board a i { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}