/* ── DSD Intelligent Systems — Landing Page ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: #07081a;
  color: #dde0f8;
  overflow-x: hidden;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 2px solid #6390ff; outline-offset: 4px; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(99,144,255,0.2); border-radius: 4px; }

/* ── Nav ── */
.dsd-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px; height: 64px;
  background: rgba(7,8,26,0.75);
  border-bottom: 1px solid rgba(99,144,255,0.07);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.dsd-nav-brand { display: flex; align-items: center; gap: 12px; }
.dsd-nav-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg,#5b8af8,#7b6bfa);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 10px rgba(91,138,248,0.35);
  position: relative; overflow: hidden; flex-shrink: 0;
}
.dsd-nav-mark::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(145deg,rgba(255,255,255,.18) 0%,transparent 60%);
}
.dsd-nav-mark span {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 700;
  color: white; position: relative; z-index: 1; letter-spacing: .02em;
}
.dsd-nav-wordmark { line-height: 1.1; }
.dsd-nav-wordmark strong { display: block; font-size: 14px; font-weight: 700; color: #eef0ff; letter-spacing: -0.3px; }
.dsd-nav-wordmark small { display: block; font-family: 'IBM Plex Mono', monospace; font-size: 8px; font-weight: 500; color: rgba(99,144,255,.45); letter-spacing: 1.5px; text-transform: uppercase; }

.dsd-nav-links { display: flex; align-items: center; gap: 32px; }
.dsd-nav-links a { color: rgba(140,150,220,.65); font-size: 13px; text-decoration: none; transition: color .15s; }
.dsd-nav-links a:hover { color: #c8ccf4; }
.dsd-nav-cta {
  background: linear-gradient(135deg,#5b8af8,#7b6bfa);
  color: white; border: none; border-radius: 7px; padding: 8px 20px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  box-shadow: 0 2px 12px rgba(91,138,248,.3); transition: filter .15s;
  text-decoration: none; display: inline-block;
}
.dsd-nav-cta:hover { filter: brightness(1.1); }

/* ── Dot grid ── */
.dsd-dot-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle, rgba(99,144,255,.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
section { position: relative; }

/* ── Hero ── */
.dsd-hero {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 120px 48px 80px; text-align: center; overflow: hidden;
}
.dsd-hero-orb1 {
  position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(91,138,248,.12) 0%, transparent 65%);
  pointer-events: none;
}
.dsd-hero-orb2 {
  position: absolute; bottom: -80px; left: 10%; width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(63,224,168,.07) 0%, transparent 70%);
  pointer-events: none;
}
.dsd-hero-orb3 {
  position: absolute; top: 20%; right: 5%; width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(184,153,255,.07) 0%, transparent 70%);
  pointer-events: none;
}
.dsd-hero-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }

.dsd-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(91,138,248,.1); border: 1px solid rgba(91,138,248,.2);
  border-radius: 20px; padding: 5px 16px; margin-bottom: 28px;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 500;
  color: rgba(99,144,255,.8); letter-spacing: 1px; text-transform: uppercase;
}
.dsd-eyebrow::before {
  content: ''; display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: #6390ff; box-shadow: 0 0 6px rgba(99,144,255,.8);
}

.dsd-hero h1 {
  font-size: clamp(40px, 6vw, 78px); font-weight: 700;
  color: #f0f2ff; letter-spacing: -2px; line-height: 1.05;
  margin-bottom: 24px; max-width: 900px;
}
.dsd-hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg,#7ba4fa,#b899ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.dsd-hero-sub {
  font-size: 18px; color: rgba(140,150,220,.65); max-width: 540px;
  line-height: 1.65; margin-bottom: 44px; font-weight: 400;
}

.dsd-hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: center; }
.dsd-btn-primary {
  background: linear-gradient(135deg,#5b8af8,#7b6bfa); color: white;
  border: none; border-radius: 9px; padding: 14px 32px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  box-shadow: 0 4px 20px rgba(91,138,248,.32); transition: all .15s;
  text-decoration: none; display: inline-block;
}
.dsd-btn-primary:hover { filter: brightness(1.08); box-shadow: 0 6px 28px rgba(91,138,248,.45); transform: translateY(-1px); }
.dsd-btn-ghost {
  background: rgba(255,255,255,.04); color: rgba(180,190,240,.8);
  border: 1px solid rgba(99,144,255,.2); border-radius: 9px; padding: 13px 28px;
  font-size: 15px; font-weight: 500; cursor: pointer;
  transition: all .15s; text-decoration: none; display: inline-block;
}
.dsd-btn-ghost:hover { background: rgba(99,144,255,.08); color: #c8ccf4; border-color: rgba(99,144,255,.35); }

.dsd-scroll {
  margin-top: 64px; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(99,144,255,.35); font-size: 11px; letter-spacing: 1px; text-transform: uppercase;
  font-family: 'IBM Plex Mono', monospace;
}
.dsd-scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, rgba(99,144,255,.4), transparent); }

/* ── Section common ── */
.dsd-section { padding: 100px 48px; max-width: 1200px; margin: 0 auto; }
.dsd-section-tag {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 600;
  color: rgba(99,144,255,.6); text-transform: uppercase; letter-spacing: 2px;
  margin-bottom: 14px; display: block;
}
.dsd-section-title { font-size: clamp(28px, 3.5vw, 44px); font-weight: 700; color: #eef0ff; letter-spacing: -0.8px; line-height: 1.15; margin-bottom: 16px; }
.dsd-section-sub { font-size: 16px; color: rgba(140,150,220,.55); line-height: 1.7; max-width: 520px; }

.dsd-divider { height: 1px; background: linear-gradient(to right, transparent, rgba(99,144,255,.12), transparent); margin: 0 48px; }

/* ── About ── */
.dsd-about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.dsd-values { display: flex; flex-direction: column; gap: 28px; margin-top: 48px; }
.dsd-value {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px; border-radius: 12px;
  background: rgba(255,255,255,.025); border: 1px solid rgba(99,144,255,.08);
  transition: border-color .2s, background .2s;
}
.dsd-value:hover { background: rgba(99,144,255,.05); border-color: rgba(99,144,255,.18); }
.dsd-value-icon {
  width: 38px; height: 38px; min-width: 38px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.dsd-value-title { font-size: 15px; font-weight: 600; color: #c8ccf4; margin-bottom: 4px; }
.dsd-value-desc { font-size: 13px; color: rgba(120,130,190,.6); line-height: 1.6; }

.dsd-about-visual {
  position: relative; display: flex; align-items: center; justify-content: center;
  height: 420px;
}
.dsd-orbit { position: absolute; border-radius: 50%; border: 1px solid rgba(99,144,255,.1); }
.dsd-orbit-1 { width: 200px; height: 200px; }
.dsd-orbit-2 { width: 320px; height: 320px; border-color: rgba(99,144,255,.06); }
.dsd-orbit-3 { width: 420px; height: 420px; border-color: rgba(99,144,255,.04); }
.dsd-orbit-dot {
  position: absolute; width: 8px; height: 8px; border-radius: 50%;
  top: -4px; left: 50%; transform: translateX(-50%);
  box-shadow: 0 0 8px currentColor;
}
.dsd-center-logo {
  width: 80px; height: 80px; border-radius: 20px;
  background: linear-gradient(135deg,#5b8af8,#7b6bfa);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 32px rgba(91,138,248,.4);
  font-family: 'IBM Plex Mono', monospace; font-size: 18px; font-weight: 700; color: white;
  position: relative; z-index: 2;
}
.dsd-float-chip {
  position: absolute;
  background: rgba(255,255,255,.04);
  border-radius: 8px; padding: 8px 12px;
}
.dsd-float-chip-label { font-family: 'IBM Plex Mono', monospace; font-size: 9px; font-weight: 600; letter-spacing: 1px; margin-bottom: 3px; }
.dsd-float-chip-name { font-size: 12px; font-weight: 600; color: #c0c8f0; }

/* ── Products ── */
.dsd-products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.dsd-product-card {
  background: rgba(255,255,255,.028); border: 1px solid rgba(99,144,255,.1);
  border-radius: 16px; padding: 28px; display: flex; flex-direction: column; gap: 18px;
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
  transition: transform .2s, box-shadow .2s, border-color .2s;
  position: relative; overflow: hidden;
}
.dsd-product-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,.4); }
.dsd-product-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
}
.dsd-product-card.active { border-color: rgba(99,144,255,.2); }
.dsd-product-card.active::before { background: linear-gradient(to right, transparent, rgba(99,144,255,.5), transparent); }
.dsd-product-card.active:hover { border-color: rgba(99,144,255,.35); }
.dsd-product-card.sdf { border-color: rgba(63,224,168,.12); }
.dsd-product-card.sdf::before { background: linear-gradient(to right, transparent, rgba(63,224,168,.4), transparent); }
.dsd-product-card.sdf:hover { border-color: rgba(63,224,168,.28); }
.dsd-product-card.soon { border-color: rgba(120,140,255,.06); border-style: dashed; }
.dsd-product-card.soon:hover { border-color: rgba(120,140,255,.14); transform: none; box-shadow: none; }

.dsd-product-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.dsd-product-badge {
  display: inline-flex; align-items: center; gap: 5px; border-radius: 20px;
  padding: 3px 10px; font-size: 10px; font-weight: 600;
  font-family: 'IBM Plex Mono', monospace; letter-spacing: .5px; align-self: flex-start;
}
.dsd-product-badge::before { content: ''; display: inline-block; width: 5px; height: 5px; border-radius: 50%; }
.badge-active { background: rgba(63,224,168,.1); color: #3fe0a8; border: 1px solid rgba(63,224,168,.2); }
.badge-active::before { background: #3fe0a8; box-shadow: 0 0 5px rgba(63,224,168,.7); }
.badge-dev { background: rgba(255,190,92,.08); color: #ffbe5c; border: 1px solid rgba(255,190,92,.2); }
.badge-dev::before { background: #ffbe5c; }
.badge-soon { background: rgba(120,140,255,.06); color: rgba(120,140,255,.4); border: 1px solid rgba(120,140,255,.1); }
.badge-soon::before { background: rgba(120,140,255,.3); }

.dsd-product-name { font-size: 19px; font-weight: 700; color: #eef0ff; letter-spacing: -0.3px; }
.dsd-product-abbr { font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 600; color: rgba(99,144,255,.4); letter-spacing: 1px; margin-bottom: 2px; }
.dsd-product-desc { font-size: 13px; color: rgba(120,130,190,.6); line-height: 1.65; flex: 1; }
.dsd-product-link {
  display: inline-flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 500;
  text-decoration: none; transition: gap .15s;
}
.dsd-product-link:hover { gap: 8px; }
.dsd-product-features { display: flex; flex-wrap: wrap; gap: 6px; }
.dsd-feat-chip {
  font-size: 10px; color: rgba(120,130,190,.5); background: rgba(255,255,255,.03);
  border: 1px solid rgba(99,144,255,.08); border-radius: 4px; padding: 2px 8px;
}

/* ── Stack ── */
.dsd-stack-section { background: rgba(255,255,255,.012); border-top: 1px solid rgba(99,144,255,.07); border-bottom: 1px solid rgba(99,144,255,.07); }
.dsd-stack-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 16px; margin-top: 48px; }
.dsd-stack-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 20px 12px; border-radius: 12px;
  background: rgba(255,255,255,.025); border: 1px solid rgba(99,144,255,.07);
  transition: background .15s, border-color .15s;
}
.dsd-stack-item:hover { background: rgba(99,144,255,.06); border-color: rgba(99,144,255,.18); }
.dsd-stack-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.dsd-stack-name { font-size: 11px; font-weight: 600; color: rgba(140,150,200,.6); text-align: center; }
.dsd-stack-role { font-size: 9px; color: rgba(100,110,160,.4); text-align: center; font-family: 'IBM Plex Mono', monospace; }

/* ── Contact ── */
.dsd-contact-card {
  max-width: 620px; margin: 56px auto 0;
  background: rgba(255,255,255,.028); border: 1px solid rgba(99,144,255,.12);
  border-radius: 20px; padding: 48px;
  box-shadow: 0 4px 24px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.04);
  text-align: center;
}
.dsd-contact-logo {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg,#5b8af8,#7b6bfa);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 18px rgba(91,138,248,.35);
  position: relative; overflow: hidden;
}
.dsd-contact-logo::after { content: ''; position: absolute; inset: 0; background: linear-gradient(145deg,rgba(255,255,255,.18) 0%,transparent 60%); }
.dsd-contact-logo span { font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 700; color: white; position: relative; z-index: 1; }
.dsd-contact-name { font-size: 20px; font-weight: 700; color: #eef0ff; margin-bottom: 8px; letter-spacing: -0.3px; }
.dsd-contact-sub { font-size: 14px; color: rgba(120,130,190,.6); line-height: 1.6; }
.dsd-contact-links { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.dsd-contact-link {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(99,144,255,.14);
  border-radius: 10px; padding: 12px 22px;
  color: #9098c8; font-size: 13px; font-weight: 500;
  transition: all .15s;
}
.dsd-contact-link:hover { background: rgba(99,144,255,.08); color: #c8ccf4; border-color: rgba(99,144,255,.3); }

/* ── Footer ── */
.dsd-footer {
  padding: 32px 48px;
  border-top: 1px solid rgba(99,144,255,.07);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.dsd-footer-left { display: flex; align-items: center; gap: 12px; }
.dsd-footer-mark {
  width: 26px; height: 26px; border-radius: 6px;
  background: linear-gradient(135deg,#5b8af8,#7b6bfa);
  display: flex; align-items: center; justify-content: center;
}
.dsd-footer-mark span { font-family: 'IBM Plex Mono', monospace; font-size: 7px; font-weight: 700; color: white; }
.dsd-footer-copy { font-size: 12px; color: rgba(100,110,160,.4); }
.dsd-footer-links { display: flex; gap: 24px; }
.dsd-footer-links a { font-size: 12px; color: rgba(100,110,160,.4); text-decoration: none; }
.dsd-footer-links a:hover { color: rgba(140,150,200,.7); }

/* ── App Mobile ── */
.dsd-app-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.dsd-app-badges { display: flex; flex-direction: column; gap: 12px; margin: 28px 0 24px; }
.dsd-app-badge {
  display: flex; align-items: center; gap: 14px;
  background: rgba(91,138,248,.07); border: 1px solid rgba(91,138,248,.18);
  border-radius: 14px; padding: 14px 18px;
  color: #c8d0f8; text-decoration: none;
  transition: all .15s;
}
.dsd-app-badge:hover { background: rgba(91,138,248,.13); border-color: rgba(91,138,248,.35); }
.dsd-app-badge--soon { opacity: .45; cursor: default; pointer-events: none; }
.dsd-app-badge-label { font-size: 14px; font-weight: 600; color: #e0e4ff; }
.dsd-app-badge-store { font-size: 11px; color: rgba(160,170,220,.5); margin-top: 1px; }
.dsd-app-features { display: flex; flex-direction: column; gap: 10px; }
.dsd-app-feature {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: rgba(160,170,220,.6);
}
/* phone mockup */
.dsd-app-visual { position: relative; display: flex; justify-content: center; }
.dsd-app-phone {
  width: 180px;
  background: #10111a;
  border: 1px solid rgba(91,138,248,.2);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,.5), 0 0 0 1px rgba(91,138,248,.08);
  position: relative; z-index: 1;
}
.dsd-app-phone-screen { padding: 0 0 8px; }
.dsd-app-phone-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px 8px;
  border-bottom: 1px solid rgba(91,138,248,.08);
}
.dsd-app-phone-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dsd-app-tab-item {
  display: flex; align-items: center; gap: 7px;
  font-size: 11px; color: rgba(240,241,245,.3);
  padding: 7px 10px; border-radius: 8px;
  font-family: 'IBM Plex Sans', sans-serif;
}
.dsd-app-tab-active {
  background: rgba(91,138,248,.1);
  color: #5b8af8;
  border: 1px solid rgba(91,138,248,.2);
}
.dsd-app-phone-nav {
  display: flex; gap: 6px; justify-content: center; padding: 10px;
  border-top: 1px solid rgba(91,138,248,.08);
}
.dsd-app-phone-nav span {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(240,241,245,.1); display: inline-block;
}
.dsd-app-glow {
  position: absolute; width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(91,138,248,.2) 0%, transparent 70%);
  bottom: -40px; left: 50%; transform: translateX(-50%);
  pointer-events: none;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .dsd-nav { padding: 0 24px; }
  .dsd-nav-links { display: none; }
  .dsd-hero { padding: 100px 24px 60px; }
  .dsd-section { padding: 64px 24px; }
  .dsd-about-grid { grid-template-columns: 1fr; gap: 40px; }
  .dsd-about-visual { height: 280px; }
  .dsd-products-grid { grid-template-columns: 1fr; }
  .dsd-stack-grid { grid-template-columns: repeat(3,1fr); }
  .dsd-app-grid { grid-template-columns: 1fr; gap: 40px; }
  .dsd-app-visual { order: -1; }
  .dsd-footer { flex-direction: column; align-items: flex-start; gap: 12px; padding: 24px; }
  .dsd-divider { margin: 0 24px; }
}