:root {
  --steel-900: #0b0f19; --steel-800: #121a26; --steel-700: #1f2933;
  --ink: #1c2429; --ink-2: #4a565d; --ink-3: #7d8a91;
  --paper: #f4f6f7; --panel: #ffffff; --line: #dbe1e4;
  --cyan: #38bdf8; --cyan-deep: #0e7490; --cyan-soft: #e0f2f7;
  --ok: #2f855a; --ok-soft: #e3f3e9; --warn: #b7651f; --warn-soft: #f8ecdf; --crit: #b23a3a; --crit-soft: #f9e5e5;
  --display: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", Menlo, monospace;
  --w: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.6; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.15; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 1.4rem; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }
a { color: var(--cyan-deep); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.eyebrow { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; color: var(--ink-3); margin-bottom: 0.8rem; }
.mono { font-family: var(--mono); }
.todo { color: var(--warn); background: var(--warn-soft); padding: 0 0.3em; border-radius: 3px; }

.btn { display: inline-block; padding: 0.8rem 1.3rem; border-radius: 6px; font-weight: 600; text-decoration: none; border: 1.5px solid transparent; font-size: 1rem; }
.btn.primary { background: var(--cyan-deep); color: #fff; }
.btn.primary:hover { background: #0b5f76; }
.btn.ghost { border-color: rgba(255,255,255,0.35); color: #fff; }
.btn.ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn.big { font-size: 1.1rem; padding: 1rem 1.5rem; }

/* header */
.top { position: sticky; top: 0; z-index: 5; background: rgba(11,15,25,0.92); backdrop-filter: blur(8px); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.7rem clamp(1rem, 4vw, 2.5rem); }
.brand { display: flex; align-items: center; gap: 0.6rem; color: #fff; text-decoration: none; font-family: var(--display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.04em; }
.brand img { border-radius: 8px; }
.top nav { display: flex; gap: 1.4rem; align-items: center; flex-wrap: wrap; }
.top nav a { color: #cbd5e1; text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: #fff; }
.top nav a.cta { background: var(--cyan-deep); color: #fff; padding: 0.45rem 0.9rem; border-radius: 6px; font-weight: 600; }
@media (max-width: 720px) { .top nav a:not(.cta) { display: none; } }

/* hero */
.hero { background: radial-gradient(1200px 600px at 80% 0%, #1b2a3a 0%, var(--steel-900) 60%); color: #fff; padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2.5rem) clamp(3rem, 6vw, 5rem); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 3rem; align-items: center; max-width: none; }
.hero-inner { max-width: 640px; margin-left: max(0px, calc((100vw - var(--w)) / 2 - 2.5rem)); }
.hero .eyebrow { color: var(--cyan); }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); margin-bottom: 1.2rem; }
.hero h1 em { font-style: italic; font-weight: 500; color: #cbd5e1; display: block; }
.lede { font-size: 1.15rem; color: #cbd5e1; max-width: 56ch; }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 1.6rem 0 1.8rem; }
.proof { list-style: none; padding: 0; margin: 0; display: flex; gap: 1.4rem; flex-wrap: wrap; font-size: 0.92rem; color: #94a3b8; }
.proof li::before { content: "—"; color: var(--cyan); margin-right: 0.5rem; }
.hero-logo { width: 100%; max-width: 560px; height: auto; justify-self: center; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } .hero-logo { max-width: 460px; order: -1; } }

/* sections */
.section { scroll-margin-top: 70px; max-width: var(--w); margin: 0 auto; padding: clamp(3rem, 7vw, 5.5rem) clamp(1rem, 4vw, 2.5rem); }
.intro { color: var(--ink-2); max-width: 70ch; margin-bottom: 2rem; }

.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
@media (max-width: 900px) { .services { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .services { grid-template-columns: 1fr; } }
.services article { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 1.4rem; opacity: 0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease; }
.services article.in { opacity: 1; transform: none; }
.services article:nth-child(2) { transition-delay: .08s } .services article:nth-child(3) { transition-delay: .16s } .services article:nth-child(4) { transition-delay: .24s }
.services svg { width: 32px; height: 32px; stroke: var(--cyan-deep); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 0.8rem; }
.services h3 { margin-bottom: 0.5rem; }
.services p { font-size: 0.95rem; color: var(--ink-2); margin: 0; }

/* diagnostic — signature */
.diag { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 3rem; align-items: center; }
@media (max-width: 860px) { .diag { grid-template-columns: 1fr; } }
.big-price { font-family: var(--display); font-size: 2.4rem; font-weight: 600; margin-bottom: 1rem; line-height: 1.1; }
.big-price span { display: block; font-family: var(--sans); font-size: 0.9rem; font-weight: 500; color: var(--ink-3); margin-top: 0.3rem; }
.diag-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; background: var(--steel-800); padding: 1.2rem; border-radius: 12px; box-shadow: 0 20px 50px -30px rgba(11,15,25,0.6); }
@media (max-width: 420px) { .diag-grid { grid-template-columns: 1fr; } }
.pt { display: grid; gap: 0.1rem; padding: 0.7rem 0.9rem 0.7rem 1.1rem; border-radius: 6px; background: var(--panel); font-size: 0.9rem; position: relative; opacity: 0; transform: translateX(-6px); transition: opacity .4s ease, transform .4s ease; }
.diag-grid.in .pt { opacity: 1; transform: none; }
.diag-grid.in .pt:nth-child(1){transition-delay:.05s}.diag-grid.in .pt:nth-child(2){transition-delay:.1s}.diag-grid.in .pt:nth-child(3){transition-delay:.15s}.diag-grid.in .pt:nth-child(4){transition-delay:.2s}.diag-grid.in .pt:nth-child(5){transition-delay:.25s}.diag-grid.in .pt:nth-child(6){transition-delay:.3s}.diag-grid.in .pt:nth-child(7){transition-delay:.35s}.diag-grid.in .pt:nth-child(8){transition-delay:.4s}.diag-grid.in .pt:nth-child(9){transition-delay:.45s}.diag-grid.in .pt:nth-child(10){transition-delay:.5s}
.pt::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; border-radius: 6px 0 0 6px; }
.pt b { font-weight: 600; } .pt span { color: var(--ink-2); font-size: 0.84rem; }
.pt.ok::before { background: var(--ok); } .pt.warn::before { background: var(--warn); } .pt.crit::before { background: var(--crit); }
.diag-caption { grid-column: 1 / -1; color: #94a3b8; font-size: 0.8rem; margin: 0.4rem 0 0; }

/* offers */
.offers { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
@media (max-width: 760px) { .offers { grid-template-columns: 1fr; } }
.col h3 { font-family: var(--sans); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; margin-bottom: 0.4rem; }
.offer { display: grid; grid-template-columns: 1fr auto; gap: 0.15rem 1rem; padding: 0.9rem 0; border-top: 1px solid var(--line); }
.offer .n { font-weight: 600; } .offer .p { font-family: var(--display); font-weight: 600; color: var(--cyan-deep); white-space: nowrap; }
.offer .d { grid-column: 1 / -1; font-size: 0.9rem; color: var(--ink-2); }

/* method */
.method { background: var(--panel); max-width: none; }
.method > * { max-width: var(--w); margin-left: auto; margin-right: auto; }
.steps { list-style: none; padding: 0; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; counter-reset: step; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: step; padding-top: 1rem; border-top: 3px solid var(--cyan); opacity: 0; transition: opacity .5s ease; }
.steps li.in { opacity: 1; } .steps li:nth-child(2) { transition-delay: .12s } .steps li:nth-child(3) { transition-delay: .24s }
.steps li::before { content: counter(step); display: block; font-family: var(--display); font-size: 1.8rem; color: var(--cyan-deep); line-height: 1; margin-bottom: 0.5rem; }
.steps b { display: block; font-family: var(--display); font-size: 1.25rem; font-weight: 600; margin-bottom: 0.4rem; }

/* about */
.about { display: grid; grid-template-columns: 1.3fr 1fr; gap: 3rem; align-items: start; }
@media (max-width: 800px) { .about { grid-template-columns: 1fr; } }
.proofs { display: grid; gap: 1rem; }
.proof-title { font-family: var(--display); font-size: 1.5rem; font-weight: 600; color: #fff; margin-bottom: 0.4rem; }
.proof-card a { color: var(--cyan); }
.proof-card { margin: 0; background: var(--steel-800); color: #e2e8f0; padding: 1.6rem; border-radius: 12px; border-left: 4px solid var(--cyan); }
.proof-card .mono { font-size: 2.4rem; color: var(--cyan); margin-bottom: 0.4rem; font-weight: 500; }
.proof-card p { font-size: 0.95rem; }
.proof-card cite { font-style: normal; font-size: 0.8rem; color: #94a3b8; }

/* contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
@media (max-width: 800px) { .contact { grid-template-columns: 1fr; } }
.contact .alt { margin-top: 1rem; color: var(--ink-2); font-size: 0.95rem; }
.faq { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; font-size: 0.95rem; color: var(--ink-2); }
.faq b { display: block; color: var(--ink); }

footer { background: var(--steel-900); color: #94a3b8; padding: 2.5rem clamp(1rem, 4vw, 2.5rem); font-size: 0.85rem; text-align: center; }
footer img { margin-bottom: 1rem; }
footer a { color: #cbd5e1; }