:root {
  --ink: #08111f;
  --ink-soft: #122033;
  --blue: #1967ff;
  --cyan: #25d6e5;
  --mint: #70f0c2;
  --paper: #f4f7fb;
  --white: #ffffff;
  --muted: #66758a;
  --line: #dce4ee;
  --radius: 22px;
  --shadow: 0 24px 70px rgba(8, 17, 31, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.skip-link { position: fixed; z-index: 1000; left: 16px; top: -60px; padding: 10px 16px; color: var(--white); background: var(--blue); border-radius: 8px; }
.skip-link:focus { top: 16px; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; border-bottom: 1px solid transparent; transition: .25s ease; }
.site-header.scrolled { background: rgba(8, 17, 31, .9); backdrop-filter: blur(18px); border-color: rgba(255,255,255,.08); }
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--white); font-size: 19px; font-weight: 300; letter-spacing: .12em; }
.brand strong { font-weight: 800; }
.brand-mark {
  display: inline-block;
  flex: 0 0 44px;
  width: 44px;
  height: 36px;
  overflow: hidden;
  background: url("assets/logo-dlinfra-final.png?v=20260827-2") center / 68px 68px no-repeat;
}
.main-nav { display: flex; align-items: center; gap: 34px; color: rgba(255,255,255,.76); font-size: 14px; font-weight: 600; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--white); }
.main-nav .nav-cta { padding: 11px 18px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; color: var(--white); }
.main-nav .client-area { margin-left: -22px; color: var(--ink); border-color: var(--cyan); background: var(--cyan); }
.main-nav .client-area:hover { color: var(--ink); background: var(--mint); border-color: var(--mint); }
.main-nav .monitoring-area { margin-left: -22px; color: var(--white); border-color: var(--blue); background: var(--blue); }
.main-nav .monitoring-area:hover { color: var(--white); border-color: #4d8cff; background: #4d8cff; }
.menu-button { display: none; border: 0; background: transparent; padding: 8px; }
.menu-button > span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--white); }

.hero { position: relative; min-height: 780px; overflow: hidden; color: var(--white); background: var(--ink); }
.hero-grid { position: absolute; inset: 0; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 90%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(4px); opacity: .4; }
.hero-glow-one { width: 560px; height: 560px; top: -230px; right: 5%; background: radial-gradient(circle, rgba(25,103,255,.9), transparent 68%); }
.hero-glow-two { width: 460px; height: 460px; bottom: -300px; left: 12%; background: radial-gradient(circle, rgba(37,214,229,.42), transparent 70%); }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; min-height: 780px; padding-top: 90px; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 22px; height: 2px; margin: 0 8px 3px 0; background: currentColor; }
.eyebrow.light { color: var(--cyan); }
.hero .eyebrow { color: var(--cyan); }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(48px, 6.2vw, 78px); line-height: .99; letter-spacing: -.055em; }
.hero h1 em { color: transparent; background: linear-gradient(90deg, var(--cyan), #7f9dff); background-clip: text; font-style: normal; }
.hero-lead { max-width: 620px; margin: 28px 0 32px; color: #b9c6d7; font-size: 19px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 52px; padding: 0 23px; border-radius: 999px; font-size: 14px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--ink); background: linear-gradient(100deg, var(--cyan), var(--mint)); box-shadow: 0 12px 34px rgba(37,214,229,.22); }
.button-ghost { color: var(--white); border: 1px solid rgba(255,255,255,.22); }
.hero-signals { display: flex; gap: 26px; margin: 46px 0 0; padding: 0; list-style: none; color: #9cacbf; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.hero-signals span { color: var(--cyan); margin-right: 6px; font-weight: 800; }

.hero-visual { position: relative; width: 440px; height: 440px; margin-left: auto; }
.orbit { position: absolute; border: 1px solid rgba(99,199,255,.22); border-radius: 50%; }
.orbit-one { inset: 22px; animation: spin 24s linear infinite; }
.orbit-two { inset: 76px; border-style: dashed; animation: spin 17s linear infinite reverse; }
.orbit-one::before, .orbit-two::before { content: ""; position: absolute; width: 9px; height: 9px; top: 22%; left: -3px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.core-card { position: absolute; inset: 105px; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.16); border-radius: 28px; background: rgba(14,31,54,.72); box-shadow: 0 30px 80px rgba(0,0,0,.35); backdrop-filter: blur(15px); }
.core-card .status { position: absolute; top: 18px; font-size: 9px; letter-spacing: .08em; color: #a9bad0; text-transform: uppercase; }
.status i { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 10px var(--mint); }
.core-card strong { margin-top: 14px; font-size: 20px; }
.core-card small { margin-top: 4px; color: #8294ab; font-size: 9px; }
.core-icon { display: flex; gap: 7px; align-items: end; height: 60px; }
.core-icon span { display: block; width: 13px; border-radius: 3px; background: linear-gradient(to top, var(--blue), var(--cyan)); box-shadow: 0 0 20px rgba(37,214,229,.25); }
.core-icon span:nth-child(1) { height: 34px; }.core-icon span:nth-child(2) { height: 55px; }.core-icon span:nth-child(3) { height: 44px; }
.float-card { position: absolute; width: 122px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.13); border-radius: 15px; background: rgba(11,27,48,.82); box-shadow: 0 15px 40px rgba(0,0,0,.28); backdrop-filter: blur(12px); }
.float-card i { display: block; width: 8px; height: 8px; margin-bottom: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.float-card span { display: block; color: #8194aa; font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.float-card strong { font-size: 13px; }
.card-network { top: 62px; left: -4px; }.card-security { right: -14px; top: 150px; }.card-support { left: 20px; bottom: 44px; }

.trust-strip { position: relative; color: #5c6b7e; background: #eaf0f6; border-bottom: 1px solid var(--line); }
.trust-content { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 18px; font-size: 11px; font-weight: 800; letter-spacing: .15em; }
.trust-content i { width: 4px; height: 4px; border-radius: 50%; background: #9bacc0; }
.section { padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1fr 360px; gap: 60px; align-items: end; margin-bottom: 54px; }
.section-heading h2, .about-copy h2, .method h2 { margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.08; letter-spacing: -.045em; }
.section-heading > p { margin: 0; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 470px; padding: 34px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); transition: transform .25s ease, box-shadow .25s ease; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card.featured { color: var(--white); background: var(--ink-soft); border-color: var(--ink-soft); }
.service-number { color: #98a8bb; font-size: 11px; font-weight: 800; letter-spacing: .1em; }
.feature-label { position: absolute; top: 26px; right: 26px; padding: 5px 10px; color: var(--ink); background: var(--cyan); border-radius: 999px; font-size: 9px; font-weight: 900; text-transform: uppercase; letter-spacing: .1em; }
.service-icon { position: relative; width: 70px; height: 70px; margin: 50px 0 28px; border-radius: 20px; background: #edf3fb; }
.featured .service-icon { background: rgba(255,255,255,.08); }
.network-icon i { position: absolute; width: 12px; height: 12px; border: 3px solid var(--blue); border-radius: 50%; }
.network-icon i:nth-child(1) { left: 15px; top: 30px; }.network-icon i:nth-child(2) { right: 14px; top: 14px; }.network-icon i:nth-child(3) { right: 14px; bottom: 12px; }
.network-icon::before, .network-icon::after { content: ""; position: absolute; left: 28px; width: 24px; height: 2px; background: var(--blue); transform-origin: left; }
.network-icon::before { top: 31px; transform: rotate(-35deg); }.network-icon::after { top: 38px; transform: rotate(32deg); }
.shield-icon i { position: absolute; inset: 14px 18px; border: 3px solid var(--cyan); border-radius: 16px 16px 22px 22px; clip-path: polygon(50% 0,100% 18%,92% 72%,50% 100%,8% 72%,0 18%); }
.shield-icon i::after { content: ""; position: absolute; width: 8px; height: 14px; left: 9px; top: 5px; border: solid var(--cyan); border-width: 0 3px 3px 0; transform: rotate(45deg); }
.pulse-icon::before { content: ""; position: absolute; inset: 18px 12px; background: linear-gradient(90deg, transparent 0 10%, var(--blue) 10% 18%, transparent 18% 33%, var(--blue) 33% 42%, transparent 42% 56%, var(--blue) 56% 65%, transparent 65% 80%, var(--blue) 80% 88%, transparent 88%); clip-path: polygon(0 45%,25% 45%,35% 5%,49% 88%,60% 34%,69% 45%,100% 45%,100% 58%,65% 58%,61% 48%,48% 100%,35% 38%,31% 58%,0 58%); }
.service-card h3 { margin: 0 0 15px; font-size: 23px; letter-spacing: -.025em; }
.service-card p { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.featured p { color: #aab8ca; }
.service-card ul { margin: 0; padding: 0; list-style: none; font-size: 13px; font-weight: 650; }
.service-card li { padding: 7px 0; border-top: 1px solid var(--line); }
.featured li { border-color: rgba(255,255,255,.1); }
.service-card li::before { content: "→"; margin-right: 9px; color: var(--blue); }.featured li::before { color: var(--cyan); }

.method { color: var(--white); background: var(--ink); }
.method-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: center; }
.method-copy > p:not(.eyebrow) { max-width: 480px; color: #9eacbd; }
.metric-row { display: flex; gap: 50px; margin-top: 45px; }
.metric-row div { display: flex; flex-direction: column; }
.metric-row strong { color: var(--cyan); font-size: 30px; }.metric-row span { color: #8090a3; font-size: 11px; text-transform: uppercase; letter-spacing: .09em; }
.steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.13); }
.steps li { display: grid; grid-template-columns: 65px 1fr; gap: 10px; padding: 25px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
.steps > li > span { color: var(--cyan); font-size: 11px; font-weight: 800; }
.steps strong { font-size: 18px; }.steps p { margin: 4px 0 0; color: #8292a6; font-size: 13px; }

.about { background: var(--white); }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.about-frame { position: relative; height: 470px; overflow: hidden; border-radius: 28px; background: linear-gradient(145deg, #0b1b2e, #12365a); box-shadow: var(--shadow); }
.about-frame::before { display: none; }
.about-brand-image {
  width: 100%;
  height: 100%;
  background: url("assets/logo-dlinfra-final.png?v=20260827-2") center / cover no-repeat;
}
.corner { position: absolute; width: 28px; height: 28px; border-color: var(--cyan); border-style: solid; }.c1 { top: 25px; left: 25px; border-width: 2px 0 0 2px; }.c2 { top: 25px; right: 25px; border-width: 2px 2px 0 0; }.c3 { bottom: 25px; left: 25px; border-width: 0 0 2px 2px; }.c4 { bottom: 25px; right: 25px; border-width: 0 2px 2px 0; }
.data-line { position: absolute; height: 2px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); opacity: .55; }.line-one { width: 180px; top: 140px; left: 15px; }.line-two { width: 230px; top: 270px; right: 0; }.line-three { width: 140px; bottom: 80px; left: 90px; }
.about-copy > p:not(.eyebrow) { color: var(--muted); }
.about-values { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.about-values span { padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; color: #435269; font-size: 12px; font-weight: 700; }

.contact { padding: 40px 0 100px; background: var(--white); }
.contact-card { min-height: 310px; display: flex; align-items: center; justify-content: space-between; gap: 50px; padding: 60px 70px; color: var(--white); border-radius: 28px; background: linear-gradient(115deg, #165ce4, #0a8db7); box-shadow: 0 28px 70px rgba(25,103,255,.24); }
.contact-card h2 { max-width: 680px; margin: 0; font-size: clamp(38px, 5vw, 58px); line-height: 1.04; letter-spacing: -.045em; }
.contact-card p:not(.eyebrow) { max-width: 620px; color: rgba(255,255,255,.76); }
.button-light { flex: 0 0 auto; color: var(--ink); background: var(--white); }
.site-footer { color: #8291a5; background: #060d17; }
.footer-main { min-height: 220px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand-footer { justify-self: start; }.footer-main p { justify-self: end; font-size: 14px; }
.footer-bottom { min-height: 74px; display: flex; align-items: center; justify-content: space-between; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }

@media (max-width: 960px) {
  .hero-layout { grid-template-columns: 1fr; padding: 150px 0 70px; }
  .hero-visual { display: none; }
  .hero { min-height: auto; }.hero-layout { min-height: 720px; }
  .service-grid { grid-template-columns: 1fr; }.service-card { min-height: auto; }
  .method-layout, .about-layout { grid-template-columns: 1fr; gap: 60px; }
  .about-visual { max-width: 620px; }.section-heading { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 1080px) {
  .menu-button { display: block; }
  .main-nav { position: fixed; inset: 82px 14px auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 14px; border: 1px solid rgba(255,255,255,.1); border-radius: 16px; background: #0c192a; box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px; }
  .main-nav .nav-cta { margin: 8px 0 0; text-align: center; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 28px, 1160px); }
  .nav-wrap { height: 70px; }.menu-button { display: block; }
  .main-nav { position: fixed; inset: 70px 14px auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 14px; border: 1px solid rgba(255,255,255,.1); border-radius: 16px; background: #0c192a; box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }.main-nav a { padding: 14px; }.main-nav .nav-cta { margin: 8px 0 0; text-align: center; }
  .hero-layout { min-height: 720px; }.hero h1 { font-size: clamp(43px, 13vw, 64px); }.hero-lead { font-size: 17px; }
  .hero-actions { flex-direction: column; align-items: stretch; }.hero-signals { gap: 12px; justify-content: space-between; }.hero-signals li { display: flex; flex-direction: column; }
  .trust-content { overflow: hidden; justify-content: flex-start; }.trust-content span:nth-of-type(n+4), .trust-content i:nth-of-type(n+3) { display: none; }
  .section { padding: 85px 0; }.section-heading h2, .about-copy h2, .method h2 { font-size: 40px; }
  .service-card { padding: 28px; }.service-icon { margin-top: 35px; }
  .metric-row { gap: 25px; }.about-frame { height: 360px; }
  .contact { padding-bottom: 70px; }.contact-card { flex-direction: column; align-items: flex-start; padding: 42px 28px; }.contact-card h2 { font-size: 39px; }
  .footer-main { grid-template-columns: 1fr; gap: 25px; padding: 55px 0; }.footer-main nav { justify-self: start; }.footer-bottom { gap: 20px; align-items: flex-start; flex-direction: column; justify-content: center; padding: 24px 0; }
}