:root {
  --bg: #f6f8fa; --surface: #ffffff; --surface-2: #f1f4f7; --text: #121d26; --muted: #5a6b7b;
  --line: #e1e7ed; --accent: #0b7a99; --accent-2: #0e93b8; --accent-ink: #ffffff; --accent-soft: #e3f2f7;
  --danger: #c0392b; --ok: #1e8449; --hero-1: #e8f4f8; --hero-2: #f6f8fa;
  --shadow: 0 1px 2px rgba(16, 32, 48, .06), 0 12px 32px rgba(16, 32, 48, .10);
  --radius: 14px; --max: 2400px;
}
:root[data-theme="dark"] {
  --bg: #0b1218; --surface: #121c24; --surface-2: #16222c; --text: #e5edf2; --muted: #93a6b5;
  --line: #22313d; --accent: #3db4d6; --accent-2: #63c6e2; --accent-ink: #052029; --accent-soft: #10303c;
  --danger: #ef6b5d; --ok: #5bc27f; --hero-1: #0f2632; --hero-2: #0b1218;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px rgba(0, 0, 0, .45);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1218; --surface: #121c24; --surface-2: #16222c; --text: #e5edf2; --muted: #93a6b5;
    --line: #22313d; --accent: #3db4d6; --accent-2: #63c6e2; --accent-ink: #052029; --accent-soft: #10303c;
    --danger: #ef6b5d; --ok: #5bc27f; --hero-1: #0f2632; --hero-2: #0b1218;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px rgba(0, 0, 0, .45);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(94vw, var(--max)); margin: 0 auto; padding: 0 16px; box-sizing: border-box; }
.icon { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; height: 64px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.theme-btn { background: transparent; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; width: 36px; height: 36px;
  display: grid; place-items: center; cursor: pointer; }
.theme-btn:hover { color: var(--text); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px; font-weight: 600;
  text-decoration: none; border: 1px solid transparent; font-size: 15px; transition: transform .12s ease, background .12s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-2); }
.btn.ghost { border-color: var(--line); color: var(--text); background: var(--surface); }
.btn.small { padding: 8px 14px; font-size: 14px; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 70% -10%, var(--hero-1), var(--hero-2) 70%); border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 72px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 999px; background: var(--accent-soft);
  color: var(--accent); font-size: 13px; font-weight: 600; }
.hero h1 { font-size: clamp(34px, 3.6vw, 76px); line-height: 1.08; margin: 18px 0 18px; letter-spacing: -0.025em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lead { font-size: clamp(17px, 1.05vw, 22px); color: var(--muted); margin: 0 0 28px; max-width: 46ch; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.trust { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 26px; color: var(--muted); font-size: 14px; }
.trust span { display: inline-flex; align-items: center; gap: 6px; }
.trust .icon { width: 18px; height: 18px; color: var(--ok); }

.window { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.window .bar { height: 30px; display: flex; align-items: center; gap: 7px; padding: 0 12px; background: var(--surface-2); border-bottom: 1px solid var(--line); }
.window .bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line); display: block; }
.window img { width: 100%; }
.shot-light { display: block; } .shot-dark { display: none; }
:root[data-theme="dark"] .shot-light { display: none; } :root[data-theme="dark"] .shot-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .shot-light { display: none; }
  :root:not([data-theme="light"]) .shot-dark { display: block; }
}

/* sections */
section { padding: 84px 0; }
section.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-head .kicker { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -0.02em; margin: 8px 0 12px; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }

/* before/after slider */
.compare { position: relative; max-width: 980px; margin: 0 auto; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line); user-select: none; touch-action: pan-y; }
.compare img { width: 100%; }
.compare .after { position: absolute; inset: 0; clip-path: inset(0 0 0 50%); }
.compare .handle { position: absolute; top: 0; bottom: 0; left: 50%; width: 3px; background: #fff; transform: translateX(-50%); pointer-events: none; }
.compare .handle::after { content: "⟷"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 40px; height: 40px;
  border-radius: 50%; background: #fff; color: #0b7a99; display: grid; place-items: center; font-weight: 700; box-shadow: 0 2px 10px rgba(0,0,0,.35); }
.compare input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; margin: 0; }
.compare .tag { position: absolute; bottom: 12px; padding: 4px 10px; border-radius: 6px; font-size: 13px; font-weight: 600; color: #fff; }
.compare .tag.b { left: 12px; background: rgba(192, 57, 43, .9); } .compare .tag.a { right: 12px; background: rgba(30, 132, 73, .92); }
.caption { text-align: center; color: var(--muted); font-size: 13px; margin-top: 12px; }

/* features */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
section.alt .feature { background: var(--bg); }
.feature .ic { width: 42px; height: 42px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 14px; }
.feature h3 { margin: 0 0 6px; font-size: 17px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; }
.step { position: relative; padding: 24px 24px 24px 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step); width: 32px; height: 32px; border-radius: 50%; background: var(--accent);
  color: var(--accent-ink); display: grid; place-items: center; font-weight: 700; margin-bottom: 12px; }
.step h3 { margin: 0 0 6px; font-size: 17px; } .step p { margin: 0; color: var(--muted); font-size: 15px; }

/* tour */
.tabs { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 22px; }
.tabs button { border: 1px solid var(--line); background: var(--surface); color: var(--muted); padding: 8px 16px; border-radius: 999px;
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.tour { max-width: 1060px; margin: 0 auto; }
.tour figure { margin: 0; display: none; } .tour figure.active { display: block; }
.tour figcaption { text-align: center; color: var(--muted); margin-top: 14px; font-size: 15px; }

/* compare table */
.table-scroll { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
table.vs { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 15px; }
table.vs th, table.vs td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: center; }
table.vs th:first-child, table.vs td:first-child { text-align: left; }
table.vs thead th { background: var(--surface-2); font-size: 14px; }
table.vs thead th.us { background: var(--accent); color: var(--accent-ink); }
table.vs td.us { background: var(--accent-soft); font-weight: 600; }
table.vs tr:last-child td { border-bottom: none; }
.y { color: var(--ok); font-weight: 700; } .n { color: var(--muted); }
.note { color: var(--muted); font-size: 14px; }

/* security */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li { display: flex; gap: 12px; }
.checks .icon { color: var(--ok); margin-top: 2px; }
.checks b { display: block; }
.checks span { color: var(--muted); font-size: 15px; }

/* pricing */
.pricing { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: stretch; }
.plan { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; display: flex; flex-direction: column; }
.plan.featured { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.plan .badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: var(--accent-ink);
  font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; white-space: nowrap; }
.plan h3 { margin: 0; font-size: 18px; }
.plan .for { color: var(--muted); font-size: 14px; margin: 4px 0 0; }
.price { font-size: 34px; font-weight: 750; margin: 14px 0 0; letter-spacing: -0.02em; }
.price small { font-size: 14px; color: var(--muted); font-weight: 500; letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 24px; display: grid; gap: 9px; font-size: 15px; flex: 1; }
.plan li { display: flex; gap: 8px; } .plan li .icon { width: 18px; height: 18px; color: var(--ok); margin-top: 3px; }
.plan .btn { justify-content: center; }

/* faq */
.faq { max-width: 820px; margin: 0 auto; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
details summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
details summary::after { content: "+"; color: var(--accent); font-size: 20px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 12px 0 0; }

/* final cta */
.final { text-align: center; background: linear-gradient(135deg, #0b6f8b, #0f2733); color: #fff; border-radius: 20px; padding: 56px 24px; }
.final h2 { font-size: clamp(26px, 3.4vw, 36px); margin: 0 0 10px; }
.final p { color: #cfe3ea; margin: 0 0 26px; }
.final .btn.primary { background: #fff; color: #0b6f8b; }
.final .btn.ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .4); }

footer { border-top: 1px solid var(--line); padding: 36px 0 44px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
footer a { color: var(--muted); }

/* legal pages */
.doc { max-width: 760px; padding: 48px 16px 72px; margin: 0 auto; }
.doc h1 { font-size: 34px; margin-bottom: 4px; letter-spacing: -0.02em; }
.doc h2 { font-size: 20px; margin-top: 34px; }

@media (max-width: 980px) {
  .hero .wrap, .split { grid-template-columns: 1fr; }
  .pricing { grid-template-columns: 1fr 1fr; }
  .grid3, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .theme-btn { margin-left: auto; }
  .pricing, .grid3, .steps { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .hero .wrap { padding-top: 40px; padding-bottom: 48px; }
}

/* ---------------------------------------------------------------- project kits additions */
.kits { display: grid; gap: 28px; }
.kit { display: grid; grid-template-columns: 1.15fr 1fr; gap: 0; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.kit:nth-child(even) .kit-shot { order: 2; }
.kit-shot { background: var(--surface-2); border-right: 1px solid var(--line); display: flex; align-items: center; }
.kit:nth-child(even) .kit-shot { border-right: none; border-left: 1px solid var(--line); }
.kit-shot img { width: 100%; height: auto; }
.kit-body { padding: 28px 28px 26px; display: flex; flex-direction: column; gap: 14px; }
.kit-body h3 { margin: 0; font-size: 23px; letter-spacing: -0.01em; line-height: 1.2; }
.kit-body p { margin: 0; color: var(--muted); font-size: 15.5px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.chip.grey { background: var(--surface-2); color: var(--muted); }
table.metrics { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.metrics td { padding: 7px 0; border-bottom: 1px solid var(--line); }
table.metrics td:last-child { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
table.metrics tr:last-child td { border-bottom: none; }
.metric-note { font-size: 13px; color: var(--muted); }
.kit-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: auto; padding-top: 6px; }
.kit-price { font-size: 28px; font-weight: 750; letter-spacing: -0.02em; }
.kit-price small { font-size: 13px; color: var(--muted); font-weight: 500; letter-spacing: 0; }
.integrity { max-width: 880px; margin: 0 auto; background: var(--surface); border: 1px solid var(--line); border-left: 5px solid var(--accent);
  border-radius: var(--radius); padding: 26px 28px; }
section.alt .integrity { background: var(--bg); }
.integrity h3 { margin: 0 0 10px; font-size: 20px; }
.integrity ul { margin: 10px 0 0; padding-left: 20px; color: var(--muted); }
.integrity li { margin-bottom: 6px; }
.integrity li b { color: var(--text); }
.pricing.three { grid-template-columns: repeat(3, 1fr); max-width: 1020px; margin: 0 auto; }
.price s { font-size: 18px; color: var(--muted); font-weight: 500; margin-left: 6px; }
.attrib { font-size: 14px; color: var(--muted); max-width: 900px; margin: 0 auto; }
.attrib li { margin-bottom: 8px; }
.req { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.req div { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; font-size: 14.5px; color: var(--muted); }
section.alt .req div { background: var(--bg); }
.req b { display: block; color: var(--text); font-size: 15px; margin-bottom: 4px; }
.doc ul { padding-left: 20px; } .doc li { margin-bottom: 6px; }
@media (max-width: 980px) {
  .kit { grid-template-columns: 1fr; }
  .kit:nth-child(even) .kit-shot { order: 0; border-left: none; }
  .kit-shot, .kit:nth-child(even) .kit-shot { border-right: none; border-bottom: 1px solid var(--line); }
  .pricing.three { grid-template-columns: 1fr 1fr; }
  .req { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .pricing.three, .req { grid-template-columns: 1fr; }
  .kit-body { padding: 20px 18px; }
  .nav .btn.small { display: none; }
}

.pricing.two { grid-template-columns: repeat(2, 1fr); max-width: 720px; margin: 0 auto; }
@media (max-width: 640px) { .pricing.two { grid-template-columns: 1fr; } }

/* ---- kit grid ---- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 22px; }
.filter { border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 999px;
  padding: 7px 14px; font: inherit; font-size: 14px; cursor: pointer; }
.filter.on, .filter:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.group { margin: 0 0 48px; }
.group-title { display: flex; align-items: baseline; gap: 10px; margin: 0 0 18px; font-size: 24px;
  padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.group-title span { font-size: 13px; font-weight: 600; color: var(--muted); }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 26px; }
.tile { position: relative; display: flex; flex-direction: column; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: var(--text);
  text-decoration: none; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.tile:hover, .tile:focus-visible { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--accent); }
.tile:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tile-shot { aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-2); border-bottom: 1px solid var(--line); }
.tile-shot img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .35s ease; }
.tile:hover .tile-shot img { transform: scale(1.06); }
.tile-icon { height: 100%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent-soft), var(--surface-2)); }
.tile-icon .icon { width: 72px; height: 72px; stroke: var(--accent); transition: transform .3s ease; }
.tile:hover .tile-icon .icon { transform: scale(1.15) rotate(-4deg); }
.tile-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.tile-body h3 { margin: 0; font-size: 20px; line-height: 1.3; transition: color .2s ease; }
.tile:hover .tile-body h3 { color: var(--accent); }
.tile-body p { margin: 0; color: var(--muted); font-size: 15.5px; line-height: 1.55; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tile-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 6px;
  padding-top: 10px; border-top: 1px dashed var(--line); }
.tile-foot .kit-price { font-size: 24px; font-weight: 750; }
.tile-foot .more { color: var(--accent); font-weight: 600; font-size: 15.5px; transition: transform .2s ease; }
.tile:hover .tile-foot .more { transform: translateX(4px); }
@media (max-width: 1000px) { .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .tiles { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .tile, .tile * { transition: none !important; } .tile:hover { transform: none; } }

/* ---- kit page ---- */
.kitpage { padding: 28px 16px 64px; }
.kitpage h2 { margin-top: 40px; }
.crumbs a { color: var(--accent); text-decoration: none; }
.kit-hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 32px; align-items: start; }
.kit-hero h1 { margin: 10px 0 8px; font-size: clamp(26px, 4vw, 38px); line-height: 1.15; }
.kit-hero .lead { font-size: 17px; color: var(--muted); line-height: 1.6; }
.kit-hero-shot img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.kitpage .small { font-size: 13px; color: var(--muted); }
.included { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.included li { display: flex; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.included li .icon { width: 26px; height: 26px; stroke: var(--accent); flex: none; }
.included li b { display: block; margin-bottom: 2px; }
.included li span { color: var(--muted); font-size: 14px; }
.credit { color: var(--muted); font-size: 14px; }
@media (max-width: 820px) { .kit-hero { grid-template-columns: 1fr; } }

.collage { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 6px; }
.collage img { width: 100%; height: auto; border-radius: 8px; }
@media (max-width: 620px) { .tiles { grid-template-columns: 1fr; } }

/* ---- adaptive sizing: cards and type scale with the screen ---- */
.tiles { grid-template-columns: repeat(auto-fill, minmax(clamp(300px, 22vw, 560px), 1fr)); }
.tile-body h3 { font-size: clamp(18px, 1.05vw, 24px); }
.tile-body p { font-size: clamp(15px, 0.8vw, 18px); }
.tile-foot .kit-price { font-size: clamp(22px, 1.2vw, 28px); }
.section-head h2 { font-size: clamp(28px, 2.4vw, 48px); }
.section-head p { font-size: clamp(16px, 0.95vw, 20px); }
.group-title { font-size: clamp(22px, 1.4vw, 30px); }
.filter { font-size: clamp(14px, 0.75vw, 17px); padding: 0.5em 1.1em; }
@media (max-width: 620px) { .tiles { grid-template-columns: 1fr; } .wrap { width: 100%; } }