/* =========================================
   TOKENS
   ========================================= */
:root {
  --ink:          #0b1120;
  --ink-muted:    #4b5675;
  --ink-subtle:   #8692a8;
  --white:        #ffffff;
  --off-white:    #f7f9fc;
  --border:       rgba(11, 17, 32, 0.1);
  --border-light: rgba(255, 255, 255, 0.1);
  --accent:       #0cbfc9;
  --dark-bg:      #060c18;
  --shadow-sm:    0 2px 8px rgba(11, 17, 32, 0.07);
  --shadow-md:    0 8px 24px rgba(11, 17, 32, 0.1);
  --r-sm:         10px;
  --r-md:         18px;
  --r-lg:         26px;
  --max-w:        1160px;
}

/* =========================================
   RESET & BASE
   ========================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--off-white);
}

img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }

/* =========================================
   LAYOUT
   ========================================= */
.container {
  width: min(calc(100% - 48px), var(--max-w));
  margin: 0 auto;
}

/* =========================================
   NAVIGATION
   ========================================= */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(6, 12, 24, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--max-w));
  margin: 0 auto;
  height: 72px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: auto;
  flex: 0 0 auto;
}

.brand-mark-nav {
  height: 38px;
}

.brand-wordmark {
  color: var(--white);
  font-family: "Manrope", "Inter", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
}

.brand-wordmark span {
  color: var(--accent);
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-nav nav a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 200ms ease;
}

.site-nav nav a:hover { color: var(--white); }

.nav-cta-btn {
  padding: 8px 20px;
  border: 1px solid rgba(12, 191, 201, 0.45);
  border-radius: 999px;
  color: var(--accent) !important;
  font-weight: 600 !important;
  transition: background 200ms ease, color 200ms ease !important;
}

.nav-cta-btn:hover {
  background: var(--accent) !important;
  color: var(--dark-bg) !important;
}

/* =========================================
   HERO
   ========================================= */
.hero {
  min-height: 100vh;
  background: var(--dark-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(12, 191, 201, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 85% 55%, rgba(12, 191, 201, 0.05) 0%, transparent 50%);
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero-inner {
  width: min(calc(100% - 48px), var(--max-w));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 80px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 28px;
  padding: 6px 16px;
  border: 1px solid rgba(12, 191, 201, 0.3);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-copy h1 {
  font-family: "Manrope", "Inter", sans-serif;
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--white);
}

.accent-text { color: var(--accent); }

.hero-sub {
  margin-top: 28px;
  max-width: 52ch;
  color: rgba(255, 255, 255, 0.55);
  font-size: 1.05rem;
  line-height: 1.78;
}

.hero-btns {
  display: flex;
  gap: 14px;
  margin-top: 36px;
  flex-wrap: wrap;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--dark-bg);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: opacity 200ms ease, transform 200ms ease;
}

.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }

.btn-primary-lg {
  padding: 16px 40px;
  font-size: 1rem;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color 200ms ease, color 200ms ease;
}

.btn-outline:hover {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
}

/* =========================================
   HERO SILHOUETTE SCENE
   ========================================= */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.silhouette-scene {
  width: 100%;
  max-width: 460px;
}

.sil-img {
  width: 100%;
  height: auto;
  display: block;
}

.sil-zone-bar {
  display: flex;
  align-items: flex-start;
  margin-top: 10px;
  padding: 0 2px;
}

.sil-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.35;
  text-align: center;
}

.sil-zone-surv {
  flex: 0 0 24%;
  color: rgba(255, 255, 255, 0.25);
}

.sil-zone-gap {
  flex: 1;
  color: var(--accent);
}

.sil-zone-rad {
  flex: 0 0 22%;
  color: rgba(255, 255, 255, 0.25);
}

.sil-bracket {
  width: 62%;
  height: 7px;
  border: 1.5px solid rgba(12, 191, 201, 0.45);
  border-bottom: none;
  border-radius: 2px 2px 0 0;
}

.sil-caption {
  margin-top: 14px;
  text-align: center;
  color: rgba(255, 255, 255, 0.38);
  font-size: 0.82rem;
  font-style: italic;
  letter-spacing: 0.01em;
  line-height: 1.5;
}

/* =========================================
   SHARED SECTION ELEMENTS
   ========================================= */
.section-tag {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-tag.light { color: rgba(12, 191, 201, 0.8); }

h2 {
  font-family: "Manrope", "Inter", sans-serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
}

.light-h2 { color: var(--white); }

.section-lead {
  margin-top: 20px;
  max-width: 60ch;
  color: var(--ink-muted);
  font-size: 1.05rem;
  line-height: 1.78;
}

.light-lead { color: rgba(255, 255, 255, 0.55); }

/* =========================================
   UNMET NEED
   ========================================= */
.section-light {
  padding: 100px 0;
  background: var(--white);
}

.need-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 56px;
  align-items: stretch;
}

.need-card {
  padding: 34px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--off-white);
  display: grid;
  align-content: start;
  gap: 14px;
}

.need-card-focus {
  background:
    linear-gradient(180deg, rgba(12, 191, 201, 0.08) 0%, rgba(12, 191, 201, 0.02) 100%),
    var(--off-white);
  box-shadow: 0 18px 34px rgba(11, 17, 32, 0.05);
}

.need-card-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(12, 191, 201, 0.12);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.need-card h3 {
  font-family: "Manrope", sans-serif;
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.need-card p {
  color: var(--ink-muted);
  font-size: 0.96rem;
  line-height: 1.72;
}

.need-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.need-list li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-muted);
  font-size: 0.98rem;
  line-height: 1.74;
}

.need-list li::before {
  content: "";
  position: absolute;
  top: 0.82em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(12, 191, 201, 0.12);
}

.need-list strong {
  color: var(--ink);
  font-weight: 700;
}

.need-summary {
  margin-top: 24px;
  color: var(--ink-muted);
  font-size: 1rem;
  line-height: 1.74;
  max-width: 74ch;
}

/* =========================================
   PLATFORM
   ========================================= */
.section-dark {
  padding: 100px 0;
  background: var(--dark-bg);
  background-image:
    radial-gradient(ellipse 60% 50% at 0% 50%, rgba(12, 191, 201, 0.05) 0%, transparent 60%);
}

.platform-items {
  margin-top: 56px;
  border: 1px solid var(--border-light);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.platform-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 32px;
  padding: 36px 40px;
  border-bottom: 1px solid var(--border-light);
  transition: background 250ms ease;
}

.platform-item:last-child { border-bottom: none; }
.platform-item:hover { background: rgba(12, 191, 201, 0.04); }

.pi-num {
  font-family: "Manrope", sans-serif;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.45;
  letter-spacing: -0.04em;
  line-height: 1;
  padding-top: 6px;
}

.pi-body h3 {
  font-family: "Manrope", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  line-height: 1.3;
}

.pi-tag {
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(12, 191, 201, 0.15);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.pi-body p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.95rem;
  line-height: 1.78;
  max-width: 68ch;
}

/* =========================================
   VALUE PROPS
   ========================================= */
.section-value {
  padding: 80px 0;
  background: var(--off-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--border);
}

.value-card {
  padding: 44px 36px;
  background: var(--white);
  transition: background 200ms ease;
}

.value-card:hover { background: #f0fafb; }

.vc-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 18px;
}

.vc-label {
  font-family: "Manrope", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.value-card p {
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.72;
}

/* =========================================
   ROADMAP
   ========================================= */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 56px;
}

.rm-card {
  padding: 30px 26px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--white);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.rm-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.rm-card-active {
  border-color: rgba(12, 191, 201, 0.35);
  background: linear-gradient(145deg, #f0fbfc 0%, var(--white) 60%);
}

.rm-phase {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.rm-status {
  display: inline-block;
  margin-bottom: 18px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(11, 17, 32, 0.06);
  color: var(--ink-subtle);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.rm-status.active {
  background: rgba(12, 191, 201, 0.12);
  color: var(--accent);
}

.rm-card h3 {
  font-family: "Manrope", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.3;
}

.rm-card p {
  color: var(--ink-muted);
  font-size: 0.875rem;
  line-height: 1.68;
}

/* =========================================
   THESIS QUOTE
   ========================================= */
.section-thesis {
  padding: 100px 0;
  background: var(--dark-bg);
  text-align: center;
}

.section-thesis blockquote {
  max-width: 52ch;
  margin: 0 auto;
  font-family: "Manrope", sans-serif;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.88);
}

.section-thesis cite {
  display: block;
  margin-top: 28px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-style: normal;
}

/* =========================================
   CONTACT
   ========================================= */
.section-contact {
  padding: 100px 0;
  background: linear-gradient(145deg, #060c18 0%, #080f1e 100%);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 80px;
  align-items: center;
}

.contact-copy h2 {
  margin-top: 12px;
  color: var(--white);
}

.contact-copy p {
  margin-top: 18px;
  max-width: 46ch;
  color: rgba(255, 255, 255, 0.5);
  font-size: 1rem;
  line-height: 1.78;
}

.contact-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  white-space: nowrap;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-links a {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.88rem;
  transition: color 200ms ease;
}

.contact-links a:hover { color: var(--accent); }

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  padding: 32px 0;
  background: #030609;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.brand-mark-footer {
  height: 40px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-wordmark {
  font-size: 0.92rem;
  letter-spacing: 0.08em;
}

.footer-brand-note {
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-footer p {
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.82rem;
  text-align: right;
}

/* =========================================
   SCROLL REVEAL
   ========================================= */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity  600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1040px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
  }

  .hero-sub,
  .hero-btns { margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }
  .hero-visual { justify-content: center; }

  .need-layout {
    grid-template-columns: 1fr;
  }

  .need-summary { max-width: none; }

  .value-grid { grid-template-columns: 1fr; }

  .roadmap-grid { grid-template-columns: repeat(2, 1fr); }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 700px) {
  .site-nav nav a:not(.nav-cta-btn) { display: none; }

  .hero { padding: 100px 0 64px; }

  .nav-inner { height: 68px; }
  .brand-mark-nav { height: 34px; }
  .brand-wordmark { font-size: 0.94rem; letter-spacing: 0.03em; }

  .hero-copy h1 { font-size: 2.5rem; }

  .need-card {
    padding: 28px 24px 24px;
  }

  .need-list li {
    font-size: 0.94rem;
  }

  .platform-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 28px 24px;
  }

  .section-light,
  .section-dark,
  .section-thesis,
  .section-contact { padding: 72px 0; }

  .roadmap-grid { grid-template-columns: 1fr; }

  h2 { font-size: 1.85rem; }

  .contact-action { align-items: stretch; }
  .btn-primary-lg { text-align: center; }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer p { text-align: left; }
}