:root {
  --navy: #0b1f3a;
  --navy-2: #122a4a;
  --teal: #0d9b8a;
  --teal-2: #0a7a6e;
  --teal-s: #e6f7f4;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #162436;
  --muted: #5c6f84;
  --line: #e2e8f0;
  --amber: #c9841a;
  --shadow: 0 18px 50px rgba(11, 31, 58, 0.12);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 100;
  background: var(--navy); color: #fff; padding: 8px 14px; border-radius: 8px;
}
.skip-link:focus { left: 8px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; height: 68px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 31px; height: 48px; }
.brand-name { display: block; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.03em; color: var(--navy); line-height: 1.1; }
.brand-by { display: block; font-size: 11px; font-weight: 600; color: var(--muted); }
.nav-links { display: flex; gap: 18px; align-items: center; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 0.9rem; font-weight: 600; }
.nav-links a:hover { color: var(--navy); }
.nav-links .nav-cta { background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 999px; }
.nav-links .nav-cta:hover { color: #fff; }
.menu-btn {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line);
  border-radius: 10px; padding: 8px 12px; cursor: pointer; font-weight: 700; color: var(--navy);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 20px; border-radius: 999px; text-decoration: none;
  font-weight: 700; font-size: 0.95rem; border: 0; cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: #fff; color: var(--navy); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-teal { background: var(--teal); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, .3); }
.btn-line { background: #fff; color: var(--navy); border: 1px solid var(--line); }

/* Hero */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: var(--navy) url("assets/hero-oxford.jpg") center/cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8, 20, 38, .94) 0%, rgba(8, 20, 38, .82) 50%, rgba(8, 20, 38, .55) 100%);
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; padding: 80px 0 72px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(13, 155, 138, .16); color: #9ee8dc;
  border: 1px solid rgba(13, 155, 138, .38);
  padding: 6px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
}
.hero h1 {
  margin: 18px 0 16px; font-size: clamp(2.1rem, 4.4vw, 3.5rem);
  line-height: 1.08; letter-spacing: -0.04em; font-weight: 800;
}
.hero-lead { font-size: 1.12rem; color: #d5deea; max-width: 560px; margin: 0 0 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; color: #b7c5d6; font-size: 13px; font-weight: 600; }
.hero-meta span { display: flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
.shot-wrap {
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 20px; padding: 10px; box-shadow: var(--shadow);
}
.shot-wrap img { border-radius: 12px; }
.shot-caption { margin: 10px 4px 0; font-size: 12px; color: #9fb1c6; }

/* Sections */
section { padding: 88px 0; }
.white { background: #fff; }
.kicker { color: var(--teal-2); font-weight: 800; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 10px; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); letter-spacing: -0.03em; margin: 0 0 12px; line-height: 1.2; }
.sub { color: var(--muted); font-size: 1.05rem; max-width: 760px; margin: 0; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 36px; }
.tile { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg); }
.white .tile { background: var(--bg); }
.tile h3 { margin: 0 0 8px; font-size: 1.05rem; color: var(--teal-2); }
.tile p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.tile ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 0.93rem; }
.tile li { margin: 4px 0; }

.callout {
  display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: center;
  margin-top: 28px; padding: 24px 26px; border-radius: 20px; background: var(--navy); color: #fff;
}
.callout strong { font-size: 2rem; letter-spacing: -0.03em; color: #9ee8dc; }
.callout p { margin: 0; color: #d5deea; }

/* Modules */
.module-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 36px 0 22px; }
.module-tab {
  text-align: left; border: 1px solid var(--line); background: #fff;
  border-radius: 16px; padding: 16px 18px; cursor: pointer; color: var(--text);
}
.module-tab .num { display: block; font-size: 12px; font-weight: 800; color: var(--teal-2); letter-spacing: .08em; }
.module-tab strong { display: block; font-size: 1.02rem; margin-top: 2px; }
.module-tab span:last-child { display: block; margin-top: 4px; color: var(--muted); font-size: 0.85rem; }
.module-tab[aria-selected="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.module-tab[aria-selected="true"] .num { color: #9ee8dc; }
.module-tab[aria-selected="true"] span:last-child { color: #c9d6e6; }
.module-panel {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px;
  background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 24px;
}
.module-panel[hidden] { display: none; }
.module-shot { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #eaf0f6; align-self: start; }
.module-shot img { width: 100%; }
.module-copy h3 { margin: 0 0 8px; font-size: 1.35rem; letter-spacing: -0.02em; }
.module-copy > p { margin: 0 0 14px; color: var(--muted); }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0 0 14px; }
.io div { background: var(--bg); border-radius: 12px; padding: 12px 14px; font-size: 0.88rem; color: var(--muted); }
.io b { display: block; color: var(--navy); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { position: relative; padding: 7px 0 7px 26px; font-size: 0.93rem; border-bottom: 1px solid var(--line); }
.checks li:last-child { border-bottom: 0; }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: 12px; width: 12px; height: 7px;
  border-left: 2.5px solid var(--teal); border-bottom: 2.5px solid var(--teal); transform: rotate(-45deg);
}
.replaces { margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: var(--teal-s); color: var(--teal-2); font-size: 0.9rem; font-weight: 600; }

/* Flow */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 36px; counter-reset: step; }
.flow-step { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; position: relative; }
.flow-step::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px;
  background: var(--navy); color: #fff; font-weight: 800; margin-bottom: 12px;
}
.flow-step.human::before { background: var(--teal); }
.flow-step h3 { margin: 0 0 6px; font-size: 1rem; }
.flow-step p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.flow-step .who { display: inline-block; margin-top: 10px; font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--teal-2); }

/* ROI */
.roi { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; margin-top: 36px; }
.roi-form { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
.roi-form fieldset { border: 0; padding: 0; margin: 0 0 18px; }
.roi-form legend { font-weight: 800; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--teal-2); margin-bottom: 10px; }
.roi-row { display: grid; grid-template-columns: 1fr 120px; gap: 12px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
.roi-row:last-child { border-bottom: 0; }
.roi-row label { font-size: 0.92rem; font-weight: 600; margin: 0; }
.roi-row small { display: block; color: var(--muted); font-weight: 500; font-size: 0.8rem; }
.roi-out { background: var(--navy); color: #fff; border-radius: 20px; padding: 26px; display: flex; flex-direction: column; gap: 16px; }
.roi-out h3 { margin: 0; }
.roi-stat { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); border-radius: 14px; padding: 16px 18px; }
.roi-stat strong { display: block; font-size: 2.1rem; letter-spacing: -0.03em; line-height: 1.1; color: #9ee8dc; font-variant-numeric: tabular-nums; }
.roi-stat span { color: #c9d6e6; font-size: 0.9rem; }
.roi-note { color: #9fb1c6; font-size: 0.82rem; margin: 0; }

/* Trust */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; }
.adv { background: var(--navy); color: #fff; border-radius: 18px; padding: 22px; }
.adv h3 { margin: 0 0 8px; font-size: 1.05rem; }
.adv p { margin: 0; color: #c9d6e6; font-size: 0.92rem; }

/* Offer / pricing */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; }
.plan { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 26px; display: flex; flex-direction: column; }
.plan.featured { border: 2px solid var(--teal); box-shadow: var(--shadow); }
.plan .tag { align-self: flex-start; font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; background: var(--teal-s); color: var(--teal-2); padding: 4px 9px; border-radius: 999px; margin-bottom: 12px; }
.plan h3 { margin: 0 0 4px; font-size: 1.25rem; }
.plan .price { color: var(--muted); font-weight: 600; margin: 0 0 14px; font-size: 0.92rem; }
.plan ul { margin: 0 0 20px; padding-left: 18px; color: var(--muted); font-size: 0.93rem; flex: 1; }
.plan li { margin: 6px 0; }
.segments { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.segments span { background: #fff; border: 1px solid var(--line); color: var(--navy-2); font-size: 13px; font-weight: 700; padding: 7px 12px; border-radius: 999px; }

/* Roadmap */
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; }
.phase { border-radius: 18px; padding: 22px; background: var(--bg); border: 1px solid var(--line); }
.phase.now { background: var(--teal-s); border-color: #bfe8e0; }
.phase .when { font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--teal-2); }
.phase h3 { margin: 6px 0 10px; font-size: 1.1rem; }
.phase ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 0.92rem; }
.phase li { margin: 5px 0; }
.ask { margin-top: 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.ask div { background: var(--navy); color: #fff; border-radius: 16px; padding: 18px; }
.ask strong { display: block; margin-bottom: 6px; color: #9ee8dc; }
.ask p { margin: 0; color: #c9d6e6; font-size: 0.9rem; }

/* Founder */
.founder {
  display: grid; grid-template-columns: 200px 1fr; gap: 32px; align-items: start;
  margin-top: 36px; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 32px;
}
.avatar {
  width: 200px; height: 200px; border-radius: 50%; overflow: hidden;
  background: linear-gradient(145deg, var(--navy), var(--teal-2));
  display: grid; place-items: center; color: #fff; font-size: 3.4rem; font-weight: 800; letter-spacing: -0.04em;
}
.avatar { position: relative; }
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.founder h3 { margin: 0; font-size: 1.5rem; letter-spacing: -0.02em; }
.founder .role { color: var(--teal-2); font-weight: 700; margin: 4px 0 14px; }
.founder p { margin: 0 0 12px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 16px; }
.chips span { background: var(--bg); color: var(--navy-2); font-size: 12px; font-weight: 700; padding: 5px 10px; border-radius: 8px; }

/* FAQ */
.faq { margin-top: 32px; max-width: 860px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 0 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 18px 0; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 1.4rem; color: var(--teal-2); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 18px; color: var(--muted); }

/* Contact */
#contact { background: var(--navy); color: #fff; }
#contact .kicker { color: #9ee8dc; }
#contact .sub { color: #c9d6e6; }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; margin-top: 36px; }
.form { background: #fff; color: var(--text); border-radius: 20px; padding: 28px; }
.form-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row { margin-bottom: 14px; }
label { display: block; font-weight: 700; font-size: 13px; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px;
  font-size: 15px; background: #fff; color: var(--text);
}
.roi-row input { padding: 9px 10px; text-align: right; font-variant-numeric: tabular-nums; }
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--teal); outline-offset: 1px; }
.form-note { color: var(--muted); font-size: 0.82rem; margin: 10px 0 0; }
.honey { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-status { margin: 12px 0 0; font-weight: 600; font-size: 0.92rem; }
.form-status:empty { display: none; }
.form-status.ok { color: var(--teal-2); }
.form-status.err { color: #b42318; }
.form-status a { color: inherit; }
.contact-aside h3 { margin: 0 0 8px; }
.contact-aside p { color: #c9d6e6; margin: 0 0 16px; }
.contact-aside ul { margin: 0 0 22px; padding-left: 18px; color: #d7e2ee; }
.contact-aside li { margin: 8px 0; }
.contact-aside a { color: #9ee8dc; font-weight: 700; }

footer { background: #081422; color: #9aabc0; padding: 30px 0; font-size: 14px; }
footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
footer a { color: #e8eef5; text-decoration: none; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 0.85rem; }
}
@media (max-width: 980px) {
  .hero-grid, .grid-3, .grid-2, .module-panel, .roi, .adv-grid, .plans, .timeline, .contact-grid, .founder {
    grid-template-columns: 1fr;
  }
  .module-tabs, .flow, .ask { grid-template-columns: 1fr 1fr; }
  .menu-btn { display: block; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 16px 20px; border-bottom: 1px solid var(--line); align-items: flex-start;
  }
  .nav-links.open a { font-size: 1rem; }
  .hero-grid { padding: 52px 0; }
  .avatar { width: 140px; height: 140px; font-size: 2.4rem; }
}
@media (max-width: 640px) {
  .container { width: calc(100% - 32px); }
  section { padding: 64px 0; }
  .module-tabs, .flow, .ask, .io, .form-2 { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr; }
  .founder { padding: 22px; }
  .roi-row { grid-template-columns: 1fr 96px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}