:root {
  --bg: #070a12;
  --bg-soft: #0d1220;
  --panel: rgba(16, 22, 37, 0.82);
  --panel-solid: #111827;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.17);
  --text: #f7f9fc;
  --muted: #9aa6bb;
  --primary: #a8b5ff;
  --primary-2: #80e0ff;
  --accent: #d8b4fe;
  --success: #7ce5bb;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.34);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--sans);
  background:
    linear-gradient(rgba(255,255,255,.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.016) 1px, transparent 1px),
    var(--bg);
  background-size: 38px 38px;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
code { font-family: var(--mono); }
.shell { width: min(1220px, calc(100% - 40px)); margin-inline: auto; }

.ambient { position: fixed; z-index: -2; border-radius: 999px; filter: blur(90px); pointer-events: none; opacity: .28; }
.ambient-a { width: 34rem; height: 34rem; top: -15rem; left: -10rem; background: #4967ff; }
.ambient-b { width: 30rem; height: 30rem; top: 18rem; right: -14rem; background: #8f4dff; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(255,255,255,.075); background: rgba(7,10,18,.72); backdrop-filter: blur(20px); }
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; color: #09101d; font-weight: 950; background: linear-gradient(135deg, var(--primary-2), var(--primary), var(--accent)); box-shadow: 0 12px 30px rgba(128,224,255,.18); }
.brand-copy strong, .brand-copy small { display: block; }
.brand-copy strong { font-size: 1rem; letter-spacing: -.02em; }
.brand-copy small { margin-top: 2px; color: var(--muted); font-size: .74rem; }
.nav-links { display: flex; gap: 28px; color: #b7c0d2; font-size: .9rem; font-weight: 700; }
.nav-links a:hover { color: #fff; }
.nav-cta { padding: 11px 16px; border: 1px solid var(--line-strong); border-radius: 999px; background: rgba(255,255,255,.05); font-size: .86rem; font-weight: 850; transition: .18s ease; }
.nav-cta:hover { border-color: rgba(168,181,255,.5); background: rgba(168,181,255,.11); transform: translateY(-1px); }

.hero { padding: 84px 0 68px; display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(360px, .88fr); gap: 52px; align-items: center; }
.eyebrow, .section-kicker { color: #aebcff; text-transform: uppercase; letter-spacing: .17em; font-size: .73rem; font-weight: 900; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; }
.eyebrow span { width: 24px; height: 1px; background: linear-gradient(90deg, var(--primary-2), var(--accent)); }
.hero h1 { max-width: 820px; margin: 18px 0 22px; font-size: clamp(3rem, 7vw, 6.4rem); line-height: .94; letter-spacing: -.065em; }
.hero-lead { max-width: 760px; color: #aeb8ca; font-size: 1.08rem; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 20px; border-radius: 15px; font-weight: 900; transition: .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #08101d; background: linear-gradient(135deg, var(--primary-2), var(--primary), var(--accent)); box-shadow: 0 16px 40px rgba(128,224,255,.16); }
.button-secondary { border: 1px solid var(--line-strong); color: #eef2ff; background: rgba(255,255,255,.045); }
.hero-metrics { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 38px; }
.hero-metrics div { display: grid; gap: 2px; }
.hero-metrics strong { font-size: 1.45rem; }
.hero-metrics span { color: var(--muted); font-size: .8rem; }

.hero-console { border: 1px solid var(--line); border-radius: var(--radius-xl); overflow: hidden; background: linear-gradient(180deg, rgba(20,28,46,.88), rgba(9,14,25,.91)); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.console-top { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 16px 18px; border-bottom: 1px solid var(--line); color: var(--muted); font: 700 .72rem var(--mono); }
.console-dots { display: flex; gap: 6px; }
.console-dots i { width: 8px; height: 8px; border-radius: 50%; background: #718096; }
.console-dots i:nth-child(1) { background: #ff7a8a; }
.console-dots i:nth-child(2) { background: #f0c45e; }
.console-dots i:nth-child(3) { background: #66dba1; }
.live-badge { justify-self: end; padding: 5px 8px; border: 1px solid rgba(124,229,187,.3); border-radius: 999px; color: var(--success); background: rgba(124,229,187,.07); }
.flow-stack { padding: 16px; display: grid; gap: 10px; }
.flow-item { display: grid; grid-template-columns: 44px 1fr 30px; gap: 12px; align-items: center; padding: 15px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.025); }
.flow-item.active { border-color: rgba(128,224,255,.35); background: linear-gradient(90deg, rgba(128,224,255,.08), rgba(168,181,255,.04)); }
.flow-index { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; color: #c8d0ff; background: rgba(168,181,255,.10); font: 900 .76rem var(--mono); }
.flow-item b, .flow-item small { display: block; }
.flow-item b { font-size: .9rem; }
.flow-item small { margin-top: 4px; color: var(--muted); font-size: .74rem; }
.flow-status { color: var(--primary-2); text-align: center; font-weight: 900; }
.console-output { margin: 0 16px 16px; padding: 16px; border: 1px solid rgba(168,181,255,.18); border-radius: 16px; background: rgba(168,181,255,.055); }
.console-output span { display: block; margin-bottom: 8px; color: var(--muted); font-size: .72rem; }
.console-output code { color: #d7ddff; font-size: .79rem; }

.section { padding: 72px 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 38px; margin-bottom: 30px; }
.section-heading.compact { margin-bottom: 24px; }
.section-heading h2, .guide-copy h2, .cta-section h2 { margin: 8px 0 0; max-width: 760px; font-size: clamp(2rem, 4vw, 3.35rem); line-height: 1.04; letter-spacing: -.045em; }
.section-heading > p { max-width: 480px; margin: 0; color: var(--muted); line-height: 1.65; }

.algorithm-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.algorithm-card { position: relative; overflow: hidden; min-height: 520px; display: flex; flex-direction: column; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-xl); background: linear-gradient(180deg, rgba(18,25,42,.86), rgba(10,15,26,.9)); box-shadow: 0 20px 60px rgba(0,0,0,.22); transition: transform .22s ease, border-color .22s ease; }
.algorithm-card::before { content: ""; position: absolute; width: 250px; height: 250px; right: -100px; top: -120px; border-radius: 50%; filter: blur(4px); opacity: .22; }
.card-des::before { background: #62d7ff; }
.card-sdes::before { background: #8e9dff; }
.card-aes::before { background: #d8a7ff; }
.card-saes::before { background: #69e0b3; }
.algorithm-card:hover { transform: translateY(-5px); border-color: rgba(168,181,255,.34); }
.card-topline { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; }
.algo-code { color: #eef2ff; font-weight: 950; letter-spacing: .05em; }
.complexity { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgba(255,255,255,.035); font-size: .72rem; font-weight: 800; }
.algo-icon { position: relative; z-index: 1; display: grid; place-items: center; width: 82px; height: 82px; margin: 34px 0 24px; border: 1px solid var(--line-strong); border-radius: 24px; color: #fff; background: rgba(255,255,255,.05); font: 950 1.4rem var(--mono); box-shadow: inset 0 1px 0 rgba(255,255,255,.07); }
.algorithm-card h3 { position: relative; z-index: 1; margin: 0; font-size: 1.55rem; letter-spacing: -.03em; }
.algorithm-card > p { position: relative; z-index: 1; color: var(--muted); line-height: 1.72; }
.chip-row { display: flex; flex-wrap: wrap; gap: 7px; margin: 6px 0 22px; }
.chip-row span { padding: 7px 9px; border: 1px solid var(--line); border-radius: 9px; color: #c3ccdc; background: rgba(255,255,255,.025); font-size: .72rem; font-weight: 800; }
.sample-mini { margin-top: auto; padding: 14px; border: 1px dashed var(--line-strong); border-radius: 14px; background: rgba(0,0,0,.14); }
.sample-mini span { display: block; margin-bottom: 6px; color: var(--muted); font-size: .7rem; }
.sample-mini code { color: #e8edff; font-size: .82rem; word-break: break-all; }
.card-link { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; padding: 15px 16px; border-radius: 14px; color: #09101d; background: linear-gradient(135deg, #d7e6ff, #c4caff); font-size: .88rem; font-weight: 950; }
.card-link span { font-size: 1.05rem; }

.guide-panel { display: grid; grid-template-columns: .82fr 1.18fr; gap: 46px; padding: clamp(24px, 5vw, 48px); border: 1px solid var(--line); border-radius: var(--radius-xl); background: linear-gradient(135deg, rgba(19,27,45,.92), rgba(12,17,29,.88)); box-shadow: var(--shadow); }
.guide-copy p { color: var(--muted); line-height: 1.7; }
.guide-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.guide-list li { display: grid; grid-template-columns: 48px 1fr; gap: 15px; align-items: start; padding: 17px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.025); }
.guide-list > li > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; color: #0b1322; background: linear-gradient(135deg, var(--primary-2), var(--primary)); font-weight: 950; }
.guide-list b { display: block; margin-top: 1px; }
.guide-list p { margin: 5px 0 0; color: var(--muted); font-size: .86rem; line-height: 1.55; }

.test-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: rgba(14,20,34,.82); box-shadow: 0 18px 50px rgba(0,0,0,.2); }
.test-table { width: 100%; min-width: 930px; border-collapse: collapse; }
.test-table th, .test-table td { padding: 17px 18px; border-bottom: 1px solid var(--line); text-align: left; }
.test-table th { color: #bfc8d9; background: rgba(255,255,255,.025); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
.test-table td { color: #dce3f1; font-size: .82rem; }
.test-table tr:last-child td { border-bottom: 0; }
.table-badge { display: inline-block; min-width: 76px; padding: 7px 9px; border: 1px solid rgba(168,181,255,.26); border-radius: 9px; color: #ccd3ff; background: rgba(168,181,255,.07); text-align: center; font-weight: 900; }

.cta-section { margin-top: 34px; margin-bottom: 76px; padding: 34px 38px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border: 1px solid rgba(128,224,255,.2); border-radius: var(--radius-xl); background: linear-gradient(135deg, rgba(128,224,255,.10), rgba(168,181,255,.08), rgba(216,180,254,.08)); }
.cta-section h2 { max-width: 760px; font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
.footer { padding: 28px 0 42px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto auto; gap: 30px; align-items: center; color: var(--muted); font-size: .82rem; }
.footer-brand .brand-mark { width: 38px; height: 38px; border-radius: 12px; }
.footer p { margin: 0; }
.footer > a { color: #d3d9ff; font-weight: 800; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 64px; }
  .hero-copy { max-width: 820px; }
  .hero-console { max-width: 720px; }
  .guide-panel { grid-template-columns: 1fr; }
  .footer { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1220px); }
  .nav-cta { display: none; }
  .brand-copy small { display: none; }
  .hero { padding: 52px 0 42px; gap: 34px; }
  .hero h1 { font-size: clamp(2.7rem, 14vw, 4.5rem); }
  .hero-metrics { gap: 18px; }
  .section { padding: 52px 0; }
  .section-heading { align-items: start; flex-direction: column; gap: 14px; }
  .algorithm-grid { grid-template-columns: 1fr; }
  .algorithm-card { min-height: 500px; }
  .cta-section { align-items: flex-start; flex-direction: column; padding: 28px; }
}
@media (max-width: 520px) {
  .hero-actions .button { width: 100%; }
  .hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); width: 100%; }
  .hero-metrics strong { font-size: 1.15rem; }
  .console-top { grid-template-columns: 1fr auto; }
  .console-top > span:nth-child(2) { display: none; }
  .flow-item { grid-template-columns: 40px 1fr; }
  .flow-status { display: none; }
  .guide-panel { padding: 20px; }
  .guide-list li { grid-template-columns: 42px 1fr; padding: 14px; }
}