:root {
  --panel: rgba(255, 249, 242, 0.75);
  --ink: #221b18;
  --muted: #63554e;
  --accent: #df6d2d;
  --accent-2: #1f7a5c;
  --accent-3: #1773b0;
  --shadow: 0 20px 60px rgba(109, 60, 23, 0.14);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 205, 130, 0.48), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(23, 115, 176, 0.14), transparent 25%),
    linear-gradient(180deg, #fff9f2 0%, #f4efe8 36%, #eef4f8 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(34, 27, 24, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 27, 24, 0.02) 1px, transparent 1px);
  background-size: 28px 28px;
}
.page-shell { width: min(1500px, calc(100% - 48px)); margin: 0 auto; position: relative; z-index: 1; }
.hero { min-height: 100vh; padding: 24px 0 60px; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 42px; padding: 10px 12px 10px 18px; border: 1px solid rgba(34, 27, 24, 0.08); border-radius: 999px; background: rgba(255, 252, 247, 0.68); backdrop-filter: blur(18px); box-shadow: 0 18px 48px rgba(109, 60, 23, 0.1); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; margin-right: auto; }
.brand-mark { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, var(--accent-3), #5bdd9d); box-shadow: inset 0 0 0 8px rgba(255, 255, 255, 0.46), 0 10px 20px rgba(23, 115, 176, 0.18); }
.nav-group { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; padding: 5px; border: 1px solid rgba(34, 27, 24, 0.07); border-radius: 999px; background: rgba(255, 255, 255, 0.48); }
.nav-pill, .cta { text-decoration: none; color: inherit; }
.nav-pill { border: 1px solid transparent; padding: 10px 16px; border-radius: 999px; background: transparent; font-weight: 700; transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.nav-pill:hover, .nav-pill:focus-visible { transform: translateY(-1px); border-color: rgba(23, 115, 176, 0.18); background: rgba(255, 255, 255, 0.86); box-shadow: 0 10px 22px rgba(109, 60, 23, 0.1); outline: none; }
.button-pill { font: inherit; cursor: pointer; }
.back-button { display: grid; place-items: center; flex: 0 0 auto; width: 50px; height: 50px; border: 2px solid rgba(23, 115, 176, 0.28); border-radius: 999px; background: linear-gradient(135deg, var(--accent-3), #6dbdff); color: #fffaf3; font: inherit; cursor: pointer; box-shadow: 0 16px 28px rgba(23, 115, 176, 0.24), inset 0 0 0 1px rgba(255, 255, 255, 0.28); transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease; }
.back-icon { position: relative; display: block; width: 20px; height: 14px; }
.back-icon::before, .back-icon::after { content: ""; position: absolute; left: 1px; }
.back-icon::before { top: 5px; width: 18px; height: 3px; border-radius: 999px; background: currentColor; }
.back-icon::after { top: 2px; width: 9px; height: 9px; border-left: 3px solid currentColor; border-bottom: 3px solid currentColor; transform: rotate(45deg); }
.back-button:hover, .back-button:focus-visible { transform: translateX(-2px) scale(1.04); background: linear-gradient(135deg, #0f659d, var(--accent-3)); color: #fffaf3; box-shadow: 0 18px 34px rgba(23, 115, 176, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.34); outline: none; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 36px; align-items: center; }
.eyebrow { margin: 0 0 12px; text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.8rem; color: var(--accent-3); font-weight: 800; }
.hero-copy h1, .section-heading h2 { margin: 0; font-family: "DM Serif Display", serif; letter-spacing: 0; line-height: 0.98; }
.hero-copy h1 { font-size: clamp(2.8rem, 5.6vw, 4.8rem); max-width: 10ch; }
.hero-text { margin: 24px 0 0; font-size: 1.08rem; line-height: 1.75; max-width: 60ch; color: var(--muted); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.cta { padding: 14px 20px; border-radius: 999px; font-weight: 800; }
.cta.primary { background: linear-gradient(135deg, var(--accent-3), #5bdd9d); color: #fffdf9; box-shadow: 0 18px 28px rgba(23, 115, 176, 0.2); }
.cta.secondary { background: rgba(255, 255, 255, 0.72); border: 1px solid rgba(34, 27, 24, 0.08); }
.hero-metrics { margin-top: 36px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.hero-metrics article, .panel, .info-card, .timeline-step, .algorithm-card { background: var(--panel); backdrop-filter: blur(16px); border: 1px solid rgba(255, 255, 255, 0.42); box-shadow: var(--shadow); }
.hero-metrics article { padding: 18px; border-radius: 18px; }
.hero-metrics strong { display: block; font-size: 1.35rem; }
.hero-metrics span, .info-card p, .algorithm-copy p, .timeline-step p, .compiler-note, .visual-note { color: var(--muted); line-height: 1.7; }
.visual-card {
  background:
    radial-gradient(circle at 12% 12%, rgba(91, 221, 157, 0.15), transparent 24%),
    radial-gradient(circle at 86% 76%, rgba(109, 189, 255, 0.15), transparent 28%),
    rgba(34, 27, 24, 0.96);
  color: #fffaf3;
  border-radius: 30px;
  padding: 18px;
  box-shadow: 0 28px 80px rgba(34, 27, 24, 0.26);
  position: relative;
  overflow: hidden;
}
.visual-card::before { content: ""; position: absolute; inset: 0; opacity: 0.18; background: linear-gradient(115deg, transparent 0 38%, rgba(255,255,255,.2) 46%, transparent 54% 100%), repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 26px); transform: translateX(-70%); animation: panelSweep 5.5s ease-in-out infinite; }
.visual-header { position: relative; z-index: 2; display: flex; align-items: center; gap: 10px; color: rgba(255, 250, 243, 0.8); font-size: 0.93rem; }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #5bdd9d; box-shadow: 0 0 18px rgba(91, 221, 157, 0.85); }
.notification-stage { position: relative; z-index: 1; min-height: 330px; margin: 18px 0; border-radius: 24px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); overflow: hidden; }
.hub { position: absolute; left: 50%; top: 50%; width: 160px; height: 160px; transform: translate(-50%, -50%); border-radius: 50%; display: grid; place-items: center; text-align: center; background: linear-gradient(135deg, #1773b0, #1f7a5c); box-shadow: 0 24px 50px rgba(23,115,176,.26); }
.hub strong { max-width: 110px; line-height: 1.15; }
.hub small { margin-top: 54px; position: absolute; color: rgba(255,255,255,.75); }
.hub-ring { position: absolute; inset: -18px; border-radius: 50%; border: 1px solid rgba(91,221,157,.35); animation: pulseRing 2.6s ease-out infinite; }
.hub-ring.two { animation-delay: 900ms; }
.channel { position: absolute; width: 118px; min-height: 78px; border-radius: 20px; display: grid; place-items: center; gap: 4px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.12); box-shadow: 0 18px 28px rgba(0,0,0,.14); animation: channelFloat 3s ease-in-out infinite; }
.channel span { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: rgba(255,255,255,.16); }
.email { left: 22px; top: 28px; }
.sms { right: 24px; top: 58px; animation-delay: 500ms; }
.whatsapp {
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  animation-delay: 900ms;
}
.packet { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; border-radius: 50%; background: #f3c060; box-shadow: 0 0 18px rgba(243,192,96,.8); }
.p1 { animation: packetEmail 2.2s ease-in-out infinite; }
.p2 { animation: packetSms 2.2s ease-in-out infinite 300ms; }
.p3 { animation: packetWhatsapp 2.2s ease-in-out infinite 600ms; }
.turn-console { position: relative; z-index: 2; display: grid; gap: 10px; }
.console-row { position: relative; display: flex; justify-content: space-between; gap: 14px; padding: 13px 14px; border-radius: 16px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); overflow: hidden; }
.console-row span { color: rgba(255,250,243,.68); }
.console-row::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(91,221,157,.14), transparent); transform: translateX(-100%); }
.visual-card.is-updating .console-row::after { animation: dataSweep 700ms ease; }
.section { padding: 72px 0; }
.section-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 26px; }
.section-heading h2 { font-size: clamp(2.1rem, 4vw, 3.8rem); max-width: 760px; }
.logic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.info-card { border-radius: var(--radius); padding: 24px; border-top: 5px solid var(--accent); }
.accent-green { border-top-color: var(--accent-2); }
.accent-blue { border-top-color: var(--accent-3); }
.info-card h3, .algorithm-copy h3, .timeline-step h3, .code-panel h3 { margin: 0 0 10px; font-size: 1.35rem; }
.timeline { display: grid; gap: 14px; }
.timeline-step { border-radius: 24px; padding: 20px; display: grid; grid-template-columns: 90px 1fr; gap: 18px; }
.step-number { font-family: "DM Serif Display", serif; font-size: 2.2rem; color: var(--accent-3); line-height: 1; }
.algorithm-stack { display: grid; gap: 18px; }
.algorithm-card { border-radius: var(--radius); padding: 22px; display: grid; grid-template-columns: 1fr 0.9fr; gap: 18px; }
.algorithm-tag { margin: 0 0 10px; font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-3); }
pre { position: relative; margin: 18px 0 0; padding: 18px; border-radius: 18px; background: rgba(34,27,24,.96); color: #fff7ee; overflow-x: auto; }
code { font-family: "Courier New", monospace; font-size: .94em; }
.algorithm-visual { border-radius: 22px; padding: 18px; background: rgba(34,27,24,.95); color: #fffaf3; min-height: 260px; }
.visual-title { font-weight: 800; margin-bottom: 18px; }
.reason-card, .flow-map span { margin: 14px 0; padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); color: rgba(255,250,243,.86); }
.flow-map { display: grid; gap: 10px; }
.flow-map span { margin: 0; font-weight: 800; }
.compiler-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.code-panel, .compiler-panel { border-radius: var(--radius); padding: 24px; min-height: 820px; }
.code-panel-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.code-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.copy-button { border: 0; border-radius: 999px; padding: 11px 16px; background: linear-gradient(135deg, var(--accent-3), #5bdd9d); color: #fffaf3; font-weight: 800; cursor: pointer; box-shadow: 0 14px 24px rgba(23,115,176,.18); }
.secondary-button { background: rgba(255,255,255,.72); color: var(--ink); border: 1px solid rgba(34,27,24,.1); box-shadow: none; }
.icon-button { width: 42px; height: 42px; padding: 0; display: grid; place-items: center; }
.expand-icon { position: relative; width: 16px; height: 16px; display: inline-block; }
.expand-icon::before, .expand-icon::after { content: ""; position: absolute; width: 7px; height: 7px; border-color: currentColor; }
.expand-icon::before { top: 0; right: 0; border-top: 2px solid; border-right: 2px solid; }
.expand-icon::after { left: 0; bottom: 0; border-left: 2px solid; border-bottom: 2px solid; }
.snippet-expand-button { position: absolute; top: 10px; right: 10px; width: 38px; height: 38px; border: 0; border-radius: 999px; display: grid; place-items: center; background: rgba(255,255,255,.15); color: #fffaf3; cursor: pointer; backdrop-filter: blur(10px); }
.code-textarea { width: 100%; min-height: 680px; resize: vertical; border-radius: 20px; border: 1px solid rgba(34,27,24,.12); background: rgba(34,27,24,.96); color: #fff7ee; padding: 18px; line-height: 1.55; font-size: .92rem; font-family: "Courier New", monospace; }
.compiler-frame { width: 100%; min-height: 710px; margin-top: 14px; border: 1px solid rgba(34,27,24,.1); border-radius: 20px; background: #fff; }
.code-modal { position: fixed; inset: 0; z-index: 20; display: none; grid-template-rows: auto 1fr; background: rgba(18,15,13,.98); padding: 18px; }
.code-modal.open { display: grid; }
.modal-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 14px; color: #fffaf3; padding-bottom: 14px; }
.modal-code { width: 100%; min-height: 0; resize: none; border-radius: 18px; border: 1px solid rgba(255,255,255,.12); background: #0f1512; color: #f5fff9; padding: 22px; line-height: 1.58; font-size: 1rem; font-family: "Courier New", monospace; }
body.modal-open { overflow: hidden; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes panelSweep { 0%,35% { transform: translateX(-70%); } 70%,100% { transform: translateX(70%); } }
@keyframes pulseRing { from { transform: scale(.86); opacity: .9; } to { transform: scale(1.32); opacity: 0; } }
@keyframes channelFloat { 0%,100% { translate: 0 0; } 50% { translate: 0 -6px; } }
@keyframes packetEmail { 0% { transform: translate(0,0); opacity: 0; } 25% { opacity: 1; } 75%,100% { transform: translate(-210px,-118px); opacity: 0; } }
@keyframes packetSms { 0% { transform: translate(0,0); opacity: 0; } 25% { opacity: 1; } 75%,100% { transform: translate(190px,-85px); opacity: 0; } }
@keyframes packetWhatsapp { 0% { transform: translate(0,0); opacity: 0; } 25% { opacity: 1; } 75%,100% { transform: translate(-6px,132px); opacity: 0; } }
@keyframes dataSweep { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
@media (max-width: 980px) { .hero-grid, .logic-grid, .algorithm-card, .compiler-layout { grid-template-columns: 1fr; } .hero { min-height: auto; } }
@media (max-width: 720px) { .page-shell { width: min(100% - 18px, 1500px); } .topbar { gap: 14px; flex-direction: column; align-items: flex-start; margin-bottom: 34px; border-radius: 24px; padding: 14px; } .nav-group { width: 100%; justify-content: flex-start; border-radius: 20px; } .hero-copy h1 { font-size: 2.4rem; } .hero-metrics { grid-template-columns: 1fr; } .timeline-step { grid-template-columns: 1fr; } .code-panel, .compiler-panel { min-height: auto; } .code-panel-header { align-items: flex-start; flex-direction: column; } .code-actions { justify-content: flex-start; } .code-textarea { min-height: 520px; } }