:root {
  --ink: #07111a;
  --ink-2: #0b1a25;
  --paper: #f3f7f7;
  --white: #fff;
  --cyan: #36c8ff;
  --mint: #5ce1b8;
  --muted: #8aa0ad;
  --line: rgba(255,255,255,.15);
  --dark-line: rgba(7,17,26,.15);
  --max: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; top: 10px; left: 10px; transform: translateY(-150%); background: var(--white); padding: 10px 16px; border-radius: 6px; }
.skip-link:focus { transform: none; }

.site-header { position: fixed; z-index: 50; inset: 0 0 auto; height: 84px; color: var(--white); transition: background .3s ease, border-color .3s ease, height .3s ease; border-bottom: 1px solid transparent; }
.site-header.scrolled { height: 72px; background: rgba(6,16,25,.9); backdrop-filter: blur(16px); border-color: var(--line); }
.nav-shell { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 1.18rem; font-weight: 760; letter-spacing: -.035em; }
.brand > span:last-child > span { color: var(--mint); }
.brand-mark { position: relative; width: 34px; height: 34px; display: inline-grid; place-items: center; border: 1px solid rgba(92,225,184,.55); border-radius: 50%; }
.brand-mark:before { content: ""; width: 18px; height: 8px; border: 3px solid var(--mint); border-left: 0; border-right: 0; transform: skewY(-25deg); }
.brand-mark i { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); top: 7px; right: 7px; box-shadow: 0 0 10px var(--cyan); }
nav { display: flex; align-items: center; gap: 33px; font-size: .85rem; font-weight: 650; }
nav a { color: rgba(255,255,255,.72); transition: color .2s; }
nav a:hover, nav a:focus-visible { color: var(--white); }
.nav-cta { color: var(--white); padding: 10px 17px; border: 1px solid var(--line); border-radius: 999px; }
.menu-button { display: none; color: var(--white); background: none; border: 0; padding: 10px; }
.menu-button span { display: block; width: 24px; height: 1px; margin: 6px 0; background: currentColor; }

.hero { position: relative; min-height: 850px; height: 100svh; max-height: 980px; color: var(--white); display: flex; align-items: center; background: #061019; overflow: hidden; }
.hero-image { position: absolute; inset: 0; background: url("siliconpower-hero.png") center center / cover no-repeat; transform: scale(1.015); animation: hero-in 1.5s cubic-bezier(.2,.7,.2,1) both; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(4,12,20,.96) 0%, rgba(4,12,20,.8) 32%, rgba(4,12,20,.23) 65%, rgba(4,12,20,.15) 100%), linear-gradient(0deg, rgba(4,12,20,.92), transparent 38%); }
.hero-content { position: relative; z-index: 2; padding-top: 44px; }
.eyebrow { margin: 0 0 20px; color: var(--mint); font-size: .72rem; line-height: 1.2; font-weight: 780; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow.dark { color: #157a6a; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 850px; margin-bottom: 28px; font-size: clamp(4rem, 7.9vw, 7.3rem); line-height: .88; letter-spacing: -.07em; font-weight: 670; }
h1 em, h2 em { font-family: Georgia, "Times New Roman", serif; font-weight: 400; color: var(--mint); }
.hero-copy { max-width: 625px; color: rgba(255,255,255,.75); font-size: clamp(1.08rem, 1.4vw, 1.3rem); line-height: 1.55; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; min-height: 54px; padding: 0 22px; border-radius: 4px; font-weight: 730; font-size: .9rem; transition: transform .2s, box-shadow .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #04130f; background: var(--mint); box-shadow: 0 10px 28px rgba(92,225,184,.16); }
.text-link { display: inline-flex; gap: 12px; align-items: center; color: rgba(255,255,255,.8); font-weight: 680; font-size: .9rem; }
.text-link span { color: var(--mint); }
.hero-rail { position: absolute; z-index: 3; bottom: 0; left: 50%; transform: translateX(-50%); min-height: 76px; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4,1fr); align-items: center; }
.hero-rail span { color: rgba(255,255,255,.72); font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
.hero-rail b { color: var(--mint); font-size: .65rem; margin-right: 10px; }

.section { padding: 135px 0; }
.thesis { background: var(--paper); }
.thesis-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 11%; align-items: end; }
h2 { margin-bottom: 0; max-width: 780px; font-size: clamp(2.8rem, 5.3vw, 5.2rem); line-height: .98; letter-spacing: -.06em; font-weight: 630; }
h2 em { color: #157a6a; }
.thesis-copy { color: #52646f; max-width: 560px; }
.lead { font-size: clamp(1.16rem, 1.5vw, 1.36rem); color: var(--ink); line-height: 1.52; }
.thesis-banner { margin-top: 85px; padding: 42px 46px; min-height: 190px; display: grid; grid-template-columns: 1fr .8fr 1fr; align-items: center; gap: 45px; color: var(--white); background: var(--ink); border-radius: 8px; overflow: hidden; }
.metric { display: block; font-size: clamp(3.4rem, 5vw, 5.5rem); line-height: .95; color: var(--mint); font-weight: 700; letter-spacing: -.07em; }
.thesis-banner p { margin: 10px 0 0; color: rgba(255,255,255,.68); font-size: .9rem; max-width: 330px; }
.thesis-note { margin: 0 !important; font-family: Georgia, serif; font-size: 1.3rem !important; line-height: 1.45; color: var(--white) !important; }
.signal-line { display: flex; align-items: end; justify-content: center; gap: 8px; height: 80px; }
.signal-line i { width: 8px; height: 25%; border-radius: 4px; background: linear-gradient(var(--cyan), var(--mint)); animation: bars 2.4s ease-in-out infinite alternate; }
.signal-line i:nth-child(2) { height: 50%; animation-delay: -.7s; }.signal-line i:nth-child(3) { height: 100%; animation-delay: -1.4s; }.signal-line i:nth-child(4) { height: 65%; animation-delay: -.4s; }.signal-line i:nth-child(5) { height: 35%; animation-delay: -1.1s; }

.platform { background: var(--ink); color: var(--white); }
.section-head { display: grid; grid-template-columns: 1.4fr .6fr; align-items: end; gap: 10%; margin-bottom: 80px; }
.section-head p:last-child { color: var(--muted); max-width: 410px; margin: 0; }
.platform h2 em, .carbon h2 em, .contact h2 em { color: var(--mint); }
.service-grid { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { position: relative; min-height: 430px; padding: 54px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .3s, transform .3s; }
.service-card:hover { background: rgba(54,200,255,.055); }
.card-number { position: absolute; right: 35px; top: 32px; color: #58707d; font-size: .7rem; }
.service-icon { width: 44px; height: 44px; margin-bottom: 64px; position: relative; }
.service-icon:before, .service-icon:after { content: ""; position: absolute; }
.power-icon:before { width: 26px; height: 38px; left: 8px; border: 2px solid var(--mint); border-radius: 50% 50% 55% 55%; transform: rotate(35deg); }
.power-icon:after { width: 15px; height: 2px; background: var(--cyan); top: 22px; left: 15px; box-shadow: 0 0 13px var(--cyan); }
.capital-icon { border: 2px solid var(--mint); border-radius: 50%; }
.capital-icon:before { inset: 8px; border: 2px solid var(--cyan); transform: rotate(45deg); }
.capital-icon:after { width: 8px; height: 8px; background: var(--mint); border-radius: 50%; left: 16px; top: 16px; }
.build-icon:before { inset: 3px; border: 2px solid var(--mint); }
.build-icon:after { left: 11px; top: 11px; width: 22px; height: 22px; border: 1px solid var(--cyan); box-shadow: inset 0 7px 0 rgba(54,200,255,.3), inset 0 -7px 0 rgba(92,225,184,.2); }
.compute-icon:before { width: 36px; height: 28px; left: 4px; top: 7px; border: 2px solid var(--mint); border-radius: 4px; box-shadow: inset 0 0 16px rgba(54,200,255,.2); }
.compute-icon:after { width: 16px; height: 2px; left: 14px; bottom: 1px; background: var(--cyan); box-shadow: 0 -6px 0 var(--cyan); }
.service-card h3 { font-size: 1.55rem; letter-spacing: -.035em; margin-bottom: 16px; }
.service-card p { max-width: 470px; color: var(--muted); }
.service-card ul { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; margin: 28px 0 0; padding: 0; }
.service-card li { padding: 6px 10px; border: 1px solid var(--line); color: #a9bbc5; border-radius: 3px; font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; }

.why { background: #e8eeee; }
.why-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 12%; align-items: start; }
.sticky-copy { position: sticky; top: 120px; }
.sticky-copy h2 { font-size: clamp(2.8rem, 4.3vw, 4.7rem); }
.sticky-copy > p:not(.eyebrow) { max-width: 510px; margin: 28px 0; color: #52646f; }
.dark-link { color: var(--ink); }
.advantage { display: grid; grid-template-columns: 60px 1fr; gap: 25px; padding: 10px 0 45px; margin-bottom: 42px; border-bottom: 1px solid var(--dark-line); }
.advantage > span { font-size: .7rem; font-weight: 800; color: #157a6a; }
.advantage h3 { margin-bottom: 10px; font-size: 1.7rem; letter-spacing: -.04em; }
.advantage p { margin: 0; color: #52646f; }

.carbon { position: relative; overflow: hidden; color: var(--white); background: radial-gradient(circle at 80% 30%, #0d3440 0, var(--ink) 38%); }
.carbon-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 10%; align-items: start; }
.carbon-content p:not(.lead) { color: #91a6b1; }
.carbon .lead { color: var(--white); }
.carbon-tags { display: grid; grid-template-columns: repeat(2,1fr); gap: 9px; margin-top: 38px; }
.carbon-tags span { padding: 14px 15px; border: 1px solid var(--line); color: #b5c7cf; font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; }
.carbon-orbit { position: absolute; width: 520px; height: 520px; right: -140px; bottom: -240px; border: 1px solid rgba(92,225,184,.12); border-radius: 50%; }
.carbon-orbit:before, .carbon-orbit:after { content: ""; position: absolute; inset: 60px; border: 1px solid rgba(54,200,255,.11); border-radius: 50%; }.carbon-orbit:after { inset: 130px; }
.carbon-orbit span { position: absolute; width: 8px; height: 8px; background: var(--mint); border-radius: 50%; box-shadow: 0 0 18px var(--mint); }
.carbon-orbit span:nth-child(1) { left: 70px; top: 74px; }.carbon-orbit span:nth-child(2) { right: 87px; top: 30px; }.carbon-orbit span:nth-child(3) { left: 132px; top: 155px; }

.model { background: var(--paper); }
.centered { text-align: center; }
.centered h2 { margin-inline: auto; }
.value-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 13px; margin: 90px 0; padding: 35px 0; border-top: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); }
.value-chain div { text-align: center; }
.value-chain span { display: block; font-weight: 750; letter-spacing: -.02em; }
.value-chain small { color: #687a85; }
.value-chain i { color: #157a6a; font-style: normal; }
.audiences { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.audience { padding: 34px; min-height: 260px; background: var(--white); border-top: 3px solid #157a6a; box-shadow: 0 15px 40px rgba(7,17,26,.055); }
.audience b { color: #157a6a; font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; }
.audience h3 { margin: 42px 0 14px; font-size: 1.45rem; letter-spacing: -.035em; }
.audience p { color: #60717b; margin: 0; }

.contact { color: var(--white); background: #02080d; padding: 110px 0; }
.contact-panel { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 8%; padding: 70px; border: 1px solid rgba(92,225,184,.25); background: linear-gradient(135deg, rgba(54,200,255,.07), rgba(92,225,184,.03)); }
.contact-panel h2 { font-size: clamp(2.8rem, 4.6vw, 5rem); }
.contact-side p { color: #94a8b2; margin-bottom: 30px; }

footer { padding: 50px 0; color: #8da1ac; background: #02080d; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; align-items: center; gap: 20px; }
.footer-brand { color: var(--white); }
.footer-grid > p { margin: 0; text-align: center; font-family: Georgia, serif; font-size: 1.25rem; color: var(--mint); }
.footer-grid > div { display: flex; justify-content: flex-end; gap: 20px; font-size: .8rem; }
.footer-grid small { grid-column: 1 / -1; padding-top: 35px; border-top: 1px solid var(--line); margin-top: 18px; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@keyframes hero-in { from { opacity: 0; transform: scale(1.06); } to { opacity: 1; transform: scale(1.015); } }
@keyframes bars { to { transform: scaleY(.45); opacity: .55; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *:before, *:after { animation: none !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .shell { width: min(calc(100% - 36px), var(--max)); }
  .site-header, .site-header.scrolled { height: 70px; }
  .menu-button { display: block; }
  nav { position: absolute; display: none; inset: 69px 0 auto; padding: 24px; background: rgba(6,16,25,.98); border-top: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 0; }
  nav.open { display: flex; }
  nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-cta { border: 0; border-bottom: 0; border-radius: 0; color: var(--mint); }
  .hero { min-height: 760px; height: 100svh; }
  .hero-content { padding-top: 0; }
  h1 { font-size: clamp(3.6rem, 13.5vw, 6rem); }
  .hero-overlay { background: linear-gradient(90deg, rgba(4,12,20,.93), rgba(4,12,20,.3)), linear-gradient(0deg, rgba(4,12,20,.95), transparent 55%); }
  .hero-rail { grid-template-columns: repeat(2,1fr); padding: 16px 0; gap: 10px; }
  .hero-rail span { font-size: .67rem; }
  .section { padding: 90px 0; }
  .thesis-grid, .section-head, .why-layout, .carbon-grid, .contact-panel { grid-template-columns: 1fr; gap: 42px; }
  .thesis-banner { grid-template-columns: 1fr 1fr; }
  .thesis-note { grid-column: 1 / -1; }
  .service-card { padding: 40px; }
  .sticky-copy { position: static; }
  .value-chain { grid-template-columns: 1fr; gap: 8px; }
  .value-chain i { transform: rotate(90deg); }
  .audiences { grid-template-columns: 1fr; }
  .contact-panel { padding: 46px; }
}

@media (max-width: 620px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .hero { min-height: 760px; max-height: 860px; }
  .hero-image { background-position: 64% center; }
  h1 { margin-top: 0; font-size: 3.45rem; }
  .hero-copy { font-size: 1rem; max-width: 92%; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 18px; }
  .button { width: 100%; }
  .hero-rail { display: none; }
  h2 { font-size: 2.65rem; }
  .thesis-banner { grid-template-columns: 1fr; padding: 32px 26px; }
  .signal-line { justify-content: flex-start; height: 55px; }
  .thesis-note { grid-column: auto; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; padding: 35px 26px; }
  .service-icon { margin-bottom: 40px; }
  .advantage { grid-template-columns: 35px 1fr; gap: 12px; }
  .carbon-tags { grid-template-columns: 1fr; }
  .contact { padding: 70px 0; }
  .contact-panel { padding: 34px 25px; }
  .footer-grid { grid-template-columns: 1fr; justify-items: start; }
  .footer-grid > p { text-align: left; }
  .footer-grid > div { justify-content: flex-start; }
}