:root {
  --ink: #f5f7f6;
  --muted: #9ca4a0;
  --line: rgba(255, 255, 255, 0.1);
  --panel: #101413;
  --green: #a7f04f;
  --green-soft: #d6ff9e;
  --bg: #080b0a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
svg { display: block; width: 1em; height: 1em; }
main { overflow: hidden; }

.site-header { height: 84px; max-width: 1360px; margin: 0 auto; padding: 0 48px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); position: relative; z-index: 10; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 650; letter-spacing: .13em; }
.brand b { color: var(--green); font-weight: 650; }
.brand-mark { width: 27px; height: 27px; border: 1px solid rgba(167,240,79,.7); border-radius: 50%; display: grid; place-items: center; position: relative; background: linear-gradient(125deg, transparent 48%, rgba(167,240,79,.45) 49%, rgba(167,240,79,.45) 52%, transparent 53%); }
.brand-mark::before, .brand-mark::after, .brand-mark i { content: ""; position: absolute; background: var(--green); border-radius: 50%; }
.brand-mark::before { width: 4px; height: 4px; left: 5px; top: 11px; }
.brand-mark::after { width: 5px; height: 5px; right: 5px; top: 6px; }
.brand-mark i { width: 3px; height: 3px; right: 7px; bottom: 5px; }
nav { display: flex; gap: 38px; margin-left: auto; margin-right: 56px; }
nav a { font-size: 13px; color: var(--muted); transition: color .2s ease; }
nav a:hover { color: var(--ink); }
.header-contact { display: inline-flex; align-items: center; gap: 11px; color: var(--green); font-size: 13px; }
.header-contact svg { transition: transform .2s ease; }
.header-contact:hover svg { transform: translateX(3px); }

.hero { max-width: 1360px; min-height: 720px; margin: 0 auto; padding: 112px 48px 105px; display: grid; grid-template-columns: 1.03fr .97fr; gap: 70px; align-items: center; position: relative; }
.hero::before { content: ""; position: absolute; left: -200px; top: 80px; width: 480px; height: 480px; border-radius: 50%; background: rgba(50,111,59,.13); filter: blur(110px); pointer-events: none; }
.eyebrow, .section-number { color: #818985; text-transform: uppercase; letter-spacing: .17em; font-size: 11px; font-weight: 600; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 28px; }
.eyebrow span { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(167,240,79,.1); }
h1 { font-size: clamp(54px, 6.3vw, 91px); line-height: .94; letter-spacing: -.055em; font-weight: 520; margin: 0; max-width: 780px; }
h1 em, h2 em { color: var(--green); font-style: normal; font-weight: inherit; }
.hero-lead { max-width: 620px; color: #aeb5b1; font-size: 17px; line-height: 1.75; margin: 35px 0 0; }
.hero-actions { display: flex; gap: 12px; margin-top: 42px; }
.button { min-height: 48px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 16px; font-size: 13px; font-weight: 600; border: 1px solid var(--line); transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--green); color: #0a0d0b; border-color: var(--green); }
.button.primary:hover { background: #b5fa61; }
.button.secondary { background: rgba(255,255,255,.025); }
.button.secondary:hover { border-color: rgba(255,255,255,.24); }
.button svg, .text-link svg, .contact-inner a svg { width: 18px; height: 18px; }

.system-visual { min-height: 510px; display: grid; place-items: center; position: relative; }
.visual-glow { position: absolute; width: 72%; height: 72%; background: rgba(99,202,82,.18); filter: blur(90px); border-radius: 50%; }
.system-card { width: min(100%, 550px); position: relative; z-index: 2; background: rgba(14,19,17,.88); border: 1px solid rgba(255,255,255,.13); box-shadow: 0 35px 100px rgba(0,0,0,.45); backdrop-filter: blur(18px); }
.system-head { height: 56px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); font-size: 11px; text-transform: uppercase; letter-spacing: .13em; color: #9ba39f; }
.live-indicator { display: flex; align-items: center; gap: 7px; color: var(--green-soft); }
.live-indicator i { width: 5px; height: 5px; background: var(--green); border-radius: 50%; box-shadow: 0 0 8px var(--green); }
.signal-map { min-height: 290px; padding: 44px 27px; display: grid; grid-template-columns: 1fr 54px 74px 48px 1.2fr; align-items: center; }
.signal-column { display: flex; flex-direction: column; gap: 12px; }
.signal-column span { padding: 10px 12px; border: 1px solid var(--line); color: #939b97; background: rgba(255,255,255,.015); font-size: 10px; }
.flow-lines { height: 114px; display: flex; flex-direction: column; justify-content: space-around; }
.flow-lines i { height: 1px; background: linear-gradient(90deg, rgba(167,240,79,.18), rgba(167,240,79,.9)); transform-origin: right; }
.flow-lines i:first-child { transform: rotate(25deg); }
.flow-lines i:last-child { transform: rotate(-25deg); }
.model-core { width: 74px; height: 74px; border: 1px solid rgba(167,240,79,.65); border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--green); box-shadow: inset 0 0 25px rgba(167,240,79,.08), 0 0 32px rgba(167,240,79,.06); }
.model-core span { font-size: 16px; font-weight: 700; letter-spacing: .05em; }
.model-core small { font-size: 7px; letter-spacing: .18em; margin-top: 2px; }
.flow-out { height: 1px; background: linear-gradient(90deg, var(--green), rgba(167,240,79,.18)); }
.output-node { min-height: 104px; padding: 16px; border: 1px solid rgba(167,240,79,.28); background: rgba(167,240,79,.035); display: flex; flex-direction: column; justify-content: center; }
.output-node small { color: var(--green); font-size: 8px; letter-spacing: .17em; }
.output-node strong { font-size: 12px; margin-top: 8px; font-weight: 600; }
.output-node span { color: #737c77; font-size: 8px; margin-top: 7px; }
.system-foot { height: 52px; padding: 0 18px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; color: #69716d; font-size: 8px; text-transform: uppercase; letter-spacing: .09em; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.055); border-radius: 50%; z-index: 1; }
.orbit-one { width: 455px; height: 455px; }
.orbit-two { width: 585px; height: 350px; transform: rotate(25deg); }

.discipline-strip { max-width: 1360px; margin: 0 auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); min-height: 72px; padding: 0 48px; display: flex; align-items: center; justify-content: space-between; color: #727a76; text-transform: uppercase; letter-spacing: .16em; font-size: 10px; }
.discipline-strip i { width: 3px; height: 3px; background: #48504c; border-radius: 50%; }
.section { max-width: 1360px; margin: 0 auto; padding: 140px 48px; }
.section-intro { display: grid; grid-template-columns: .52fr 1.48fr; gap: 50px; }
.section-number { margin: 10px 0 0; }
.section-intro h2 { margin: 0; font-size: clamp(42px, 5vw, 69px); line-height: 1.02; letter-spacing: -.045em; font-weight: 500; }
.section-intro > div > p { max-width: 610px; color: var(--muted); font-size: 16px; line-height: 1.75; margin: 29px 0 0; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 90px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.capability-card { min-height: 370px; padding: 34px 32px; border-right: 1px solid var(--line); position: relative; transition: background .25s ease; }
.capability-card:last-child { border-right: 0; }
.capability-card:hover { background: rgba(255,255,255,.025); }
.card-icon { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(167,240,79,.22); color: var(--green); }
.card-icon svg { width: 21px; height: 21px; }
.card-index { position: absolute; right: 31px; top: 30px; margin: 0; color: #555e59; font-size: 10px; letter-spacing: .15em; }
.capability-card h3 { margin: 115px 0 15px; font-size: 22px; font-weight: 520; letter-spacing: -.02em; }
.capability-card > p:last-child { color: #8e9692; font-size: 14px; line-height: 1.75; margin: 0; max-width: 300px; }

.sirbro-section { background: #eef2ff; color: #111827; padding: 82px 48px; }
.sirbro-panel { max-width: 1264px; margin: 0 auto; display: grid; grid-template-columns: 1fr .78fr; gap: 110px; align-items: end; }
.product-label { display: flex; gap: 12px; align-items: center; margin: 0 0 40px; }
.product-label span { color: #312e81; text-transform: uppercase; font-size: 10px; letter-spacing: .17em; font-weight: 700; }
.product-label i { color: #312e81; background: rgba(99,102,242,.08); font-style: normal; font-size: 9px; font-weight: 700; border: 1px solid rgba(49,46,129,.24); padding: 4px 7px; border-radius: 20px; }
.sirbro-wordmark { display: flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 800; letter-spacing: -.02em; }
.sirbro-logo-tile { width: 38px; height: 38px; display: grid; place-items: center; overflow: hidden; border-radius: 9px; background: linear-gradient(135deg, #e0e7ff, #a5b4fc); box-shadow: inset 0 0 0 1px rgba(49,46,129,.12); }
.sirbro-logo-tile img { width: 29px; height: 34px; object-fit: contain; }
.sirbro-copy h2 { font-size: clamp(44px, 5.3vw, 76px); line-height: .98; letter-spacing: -.055em; font-weight: 560; margin: 34px 0 28px; }
.sirbro-copy h2 em { color: #6366f2; }
.sirbro-copy > p:not(.product-label) { max-width: 650px; color: #4b5265; font-size: 15px; line-height: 1.75; }
.text-link { color: #312e81; display: inline-flex; align-items: center; gap: 14px; border-bottom: 1px solid rgba(49,46,129,.4); padding: 0 0 8px; font-size: 13px; font-weight: 700; margin-top: 30px; }
.text-link svg { transition: transform .2s ease; }
.text-link:hover svg { transform: translateX(3px); }
.product-architecture { background: #111827; color: #eef2ff; padding: 0 28px 24px; box-shadow: 0 28px 70px rgba(49,46,129,.22); }
.architecture-label { height: 55px; display: flex; align-items: center; margin: 0; color: #a5b4fc; font-size: 9px; text-transform: uppercase; letter-spacing: .17em; border-bottom: 1px solid rgba(238,242,255,.12); }
.architecture-row { min-height: 104px; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); }
.architecture-row > span { font-size: 9px; color: #a5b4fc; }
.architecture-row > div { display: flex; flex-direction: column; gap: 7px; }
.architecture-row strong { font-size: 13px; font-weight: 550; }
.architecture-row small { color: #aeb5c7; font-size: 10px; }
.architecture-row > i { font-style: normal; color: #7c85a0; font-size: 8px; letter-spacing: .15em; }
.architecture-footer { display: flex; gap: 7px; padding-top: 20px; }
.architecture-footer span { font-size: 8px; color: #c7d2fe; border: 1px solid rgba(199,210,254,.16); padding: 6px 9px; }

.principles-section { padding-bottom: 155px; }
.principles-grid { margin-top: 90px; display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.principle { border-left: 1px solid rgba(167,240,79,.35); padding: 2px 30px 2px 25px; }
.principle span { font-size: 14px; font-weight: 600; }
.principle p { color: #78817c; font-size: 13px; line-height: 1.7; margin: 13px 0 0; }

.contact-section { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: radial-gradient(circle at 82% 45%, rgba(90,156,63,.18), transparent 27%); }
.contact-inner { max-width: 1360px; margin: 0 auto; padding: 116px 48px 126px; }
.contact-inner h2 { font-size: clamp(49px, 7vw, 98px); line-height: .95; letter-spacing: -.055em; font-weight: 500; margin: 35px 0 45px; }
.contact-inner a { color: var(--green); font-size: clamp(18px, 2.1vw, 28px); display: inline-flex; gap: 18px; align-items: center; border-bottom: 1px solid rgba(167,240,79,.45); padding-bottom: 10px; }
.contact-inner a svg { transition: transform .2s ease; }
.contact-inner a:hover svg { transform: translateX(4px); }
footer { max-width: 1360px; min-height: 205px; margin: 0 auto; padding: 47px 48px; display: grid; grid-template-columns: .65fr 1fr .8fr; gap: 50px; align-items: start; }
.footer-brand { margin-top: 2px; }
.legal strong { font-size: 10px; letter-spacing: .13em; }
.legal p, .footer-end { color: #707874; font-size: 10px; line-height: 1.7; }
.legal p { margin: 12px 0 0; }
.footer-end { display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.footer-end a { color: #b3bab6; }

.reveal { animation: rise .7s ease both; }
.delay-1 { animation-delay: .12s; }
.delay-2 { animation-delay: .22s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { animation: none; } }

@media (max-width: 980px) {
  .site-header { padding: 0 26px; }
  nav { display: none; }
  .hero { padding: 90px 26px 75px; grid-template-columns: 1fr; gap: 60px; }
  .hero-lead { max-width: 680px; }
  .system-visual { min-height: 470px; }
  .discipline-strip, .section, .contact-inner { padding-left: 26px; padding-right: 26px; }
  .section-intro { grid-template-columns: 1fr; gap: 28px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 270px; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-card:last-child { border-bottom: 0; }
  .capability-card h3 { margin-top: 70px; }
  .sirbro-section { padding: 75px 26px; }
  .sirbro-panel { grid-template-columns: 1fr; gap: 65px; }
  .product-architecture { max-width: 620px; }
  footer { padding-left: 26px; padding-right: 26px; grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .site-header { height: 72px; padding: 0 20px; }
  .brand { font-size: 12px; }
  .brand-mark { width: 24px; height: 24px; }
  .header-contact { font-size: 0; gap: 0; }
  .header-contact::before { content: "Email"; font-size: 12px; }
  .header-contact svg { display: none; }
  .hero { min-height: auto; padding: 72px 20px 66px; }
  h1 { font-size: clamp(49px, 15vw, 66px); }
  .hero-lead { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .system-visual { min-height: 370px; }
  .system-card { transform: none; }
  .signal-map { min-height: 240px; padding: 30px 14px; grid-template-columns: 1fr 25px 58px 22px 1.1fr; }
  .signal-column span { padding: 8px 6px; font-size: 8px; }
  .flow-lines { height: 94px; }
  .model-core { width: 58px; height: 58px; }
  .model-core span { font-size: 12px; }
  .output-node { min-height: 94px; padding: 10px 8px; }
  .output-node strong { font-size: 9px; }
  .output-node span { font-size: 7px; }
  .system-foot { padding: 0 10px; font-size: 6px; }
  .orbit-one { width: 330px; height: 330px; }
  .orbit-two { display: none; }
  .discipline-strip { padding: 0 20px; min-height: 62px; }
  .discipline-strip span:nth-of-type(3), .discipline-strip span:nth-of-type(4), .discipline-strip i:nth-of-type(2), .discipline-strip i:nth-of-type(3) { display: none; }
  .section { padding: 96px 20px; }
  .section-intro h2 { font-size: 43px; }
  .capability-grid { margin-top: 60px; }
  .capability-card { padding-left: 20px; padding-right: 20px; }
  .sirbro-section { padding: 65px 20px; }
  .sirbro-copy h2 { font-size: 47px; }
  .product-architecture { padding: 0 18px 18px; }
  .architecture-row { grid-template-columns: 24px 1fr; }
  .architecture-row > i { display: none; }
  .principles-grid { grid-template-columns: 1fr; gap: 36px; margin-top: 60px; }
  .contact-inner { padding: 88px 20px 96px; }
  .contact-inner h2 { font-size: 52px; }
  footer { padding: 40px 20px; grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: auto; }
  .footer-end { align-items: flex-start; }
}