/* Technical overview — builds on home.css tokens and components */

.tech .nav { gap: 28px; }

/* hero */
.t-hero { position: relative; padding: 150px 0 40px; overflow: hidden; isolation: isolate; }
.t-glow { position: absolute; z-index: -1; left: 50%; top: -300px; width: 1100px; height: 760px; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(79,123,255,.24), rgba(167,123,255,.08) 55%, transparent); pointer-events: none; }
.t-hero h1 { max-width: 960px; font-size: clamp(38px, 5vw, 68px); line-height: 1.04; font-weight: 600; letter-spacing: -.045em; }
.t-hero .sub { max-width: 640px; }
.toc { display: flex; flex-wrap: wrap; gap: 10px; margin: 36px 0 0; padding: 0; list-style: none; }
.toc a { display: inline-flex; align-items: center; gap: 10px; height: 42px; padding: 0 16px 0 8px; border: 1px solid var(--line2); border-radius: 999px; background: rgba(10,16,32,.6); color: var(--text); font: 600 14.5px var(--body); transition: border-color .2s, color .2s; }
.toc a:hover { border-color: var(--cyan); color: var(--ink); }
.toc span { display: grid; place-content: center; width: 28px; height: 28px; border-radius: 50%; background: rgba(140,170,230,.12); color: var(--ink); font: 500 12px var(--mono); }

/* sections */
.t-sec { padding: 110px 0 0; scroll-margin-top: 70px; }
.t-head h2 { font-size: clamp(30px, 3.6vw, 48px); line-height: 1.08; font-weight: 600; letter-spacing: -.04em; max-width: 820px; }
.t-head .sub { max-width: 680px; margin-top: 16px; font-size: 17px; }
.note { margin: 22px 0 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.02); font-size: 15px; color: var(--text); max-width: 560px; }
.note b { color: var(--ink); }

/* discovery */
.discovery-frame { margin-top: 42px; }
.discovery-frame img { aspect-ratio: 1825 / 862; object-fit: cover; }
.discovery-frame figcaption { display: flex; justify-content: space-between; gap: 24px; }

/* architecture diagram */
.arch { margin-top: 50px; padding: 34px 28px; display: grid; grid-template-columns: 1fr .5fr 1fr 1.6fr 1fr .5fr 1fr; align-items: center; border: 1px solid var(--line2); border-radius: 26px; background: linear-gradient(160deg, rgba(16,24,44,.85), rgba(6,10,20,.9)); box-shadow: 0 40px 100px -40px rgba(0,0,0,.8), 0 0 100px -50px rgba(79,123,255,.5); }
.arch-node { position: relative; z-index: 1; padding: 18px 12px; border: 1px solid var(--line2); border-radius: 16px; background: rgba(8,14,28,.95); text-align: center; min-width: 0; }
.arch-node small { display: block; font: 500 11.5px var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .08em; }
.arch-node b { display: block; margin-top: 6px; font: 600 18px var(--display); color: var(--ink); }
.arch-node em { display: block; margin-top: 4px; font: 400 12.5px var(--mono); font-style: normal; color: var(--mute); }
.arch-node.wl { border-color: rgba(62,240,176,.45); background: #071a1c; box-shadow: 0 0 36px -12px rgba(62,240,176,.55); }
.arch-node.wl em { color: var(--mint); }
.wl-dot { display: block; width: 9px; height: 9px; margin: 0 auto 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.arch-link { position: relative; height: 2px; margin: 0 -1px; background: rgba(140,170,230,.35); }
.arch-link.plain i { position: absolute; top: -2px; left: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--text); animation: hop 2.4s linear infinite; }
.arch-link.cw1 { height: 56px; border-block: 1px solid rgba(92,225,255,.5); background: linear-gradient(90deg, rgba(79,123,255,.1), rgba(92,225,255,.22), rgba(167,123,255,.1)); overflow: hidden; display: grid; place-content: center; }
.arch-link.cw1 i { position: absolute; top: 50%; left: -50px; width: 40px; height: 5px; margin-top: -2.5px; border-radius: 5px; background: linear-gradient(90deg, transparent, var(--cyan), #fff); box-shadow: 0 0 14px var(--cyan); animation: travel 2.4s linear infinite; }
.arch-link.cw1 i:nth-child(2) { animation-delay: .8s; } .arch-link.cw1 i:nth-child(3) { animation-delay: 1.6s; }
.arch-link.cw1 span { position: relative; z-index: 1; font: 500 12px var(--mono); color: var(--ink); text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; padding: 5px 12px; border-radius: 8px; background: rgba(6,14,28,.92); border: 1px solid rgba(92,225,255,.3); }
@keyframes hop { from { left: 0; } to { left: calc(100% - 6px); } }
.facts-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 22px 0 0; padding: 0; list-style: none; }
.facts-row li { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(10,15,30,.6); }
.facts-row b { display: block; color: var(--ink); font: 600 16px var(--display); }
.facts-row span { display: block; margin-top: 4px; font-size: 15px; color: var(--text); }

/* cryptography */
.crypto { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.crypto article { position: relative; padding: 28px 26px; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(170deg, rgba(20,28,50,.7), rgba(8,12,24,.6)); overflow: hidden; }
.crypto article::before { content: ''; position: absolute; inset: 0 0 auto; height: 2px; background: var(--grad); opacity: .7; }
.crypto small { font: 500 12px var(--mono); color: var(--cyan); text-transform: uppercase; letter-spacing: .1em; }
.crypto b { display: block; margin-top: 12px; font: 600 clamp(28px, 2.6vw, 36px)/1.05 var(--display); letter-spacing: -.03em; color: var(--ink); }
.crypto p { margin: 12px 0 18px; font-size: 15.5px; }
.std { display: inline-block; padding: 4px 10px; border-radius: 8px; border: 1px solid var(--line2); font-size: 12px; color: var(--mute); }

/* split layout with product screens */
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.split.rev { grid-template-columns: 1.1fr .9fr; }
.scopes { margin: 26px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.scopes li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(10,15,30,.6); }
.scopes li > span { flex: none; display: grid; place-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--grad); color: #04101c; font: 500 13px var(--mono); }
.scopes b { display: block; color: var(--ink); font: 600 16px var(--display); }
.scopes em { display: block; font-style: normal; font-size: 14.5px; color: var(--text); }
.frame { margin: 0; border: 1px solid var(--line2); border-radius: 18px; background: #060a14; overflow: hidden; box-shadow: 0 40px 100px -40px rgba(0,0,0,.9), 0 0 90px -50px rgba(92,225,255,.45); }
.frame-bar { display: flex; align-items: center; gap: 7px; padding: 11px 14px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.02); }
.frame-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3550; }
.frame-bar span { margin-left: auto; font: 400 12px var(--mono); color: var(--mute); }
.frame img { display: block; width: 100%; height: auto; }
.frame figcaption { padding: 10px 14px; border-top: 1px solid var(--line); font: 400 12px var(--mono); color: var(--mute); }

/* verification questions */
.qs { display: grid; gap: 10px; margin-top: 40px; }
.q { border: 1px solid var(--line); border-radius: 16px; background: rgba(10,15,30,.6); transition: border-color .3s, background .3s; }
.q[open] { border-color: rgba(62,240,176,.4); background: rgba(8,30,28,.55); }
.q summary { display: flex; align-items: center; gap: 16px; padding: 18px 20px; cursor: pointer; list-style: none; }
.q summary::-webkit-details-marker { display: none; }
.q-n { flex: none; display: grid; place-content: center; width: 36px; height: 36px; border-radius: 10px; background: rgba(62,240,176,.14); color: var(--mint); font-size: 15px; }
.q summary b { flex: 1; font: 600 18px var(--display); color: var(--ink); letter-spacing: -.01em; }
.q summary i { width: 10px; height: 10px; border-right: 2px solid var(--mute); border-bottom: 2px solid var(--mute); transform: rotate(45deg); transition: transform .25s; margin-right: 4px; }
.q[open] summary i { transform: rotate(-135deg); }
.q ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0 20px 20px 72px; list-style: none; }
.q li { padding: 6px 12px; border-radius: 9px; border: 1px solid rgba(62,240,176,.25); background: rgba(62,240,176,.06); font-size: 14.5px; color: var(--text); }
.q li::before { content: '✓ '; color: var(--mint); }
.verdicts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.v { padding: 16px 18px; border-radius: 14px; border: 1px solid var(--line); background: rgba(10,15,30,.6); }
.v b { display: inline-block; padding: 3px 10px; border-radius: 7px; font-size: 13px; font-weight: 500; }
.v span { display: block; margin-top: 8px; font-size: 14.5px; }
.v.pass b { background: var(--mint); color: #04101c; }
.v.fail b { background: var(--red); color: #fff; }
.v.inc b { background: var(--amber); color: #1a1000; }

/* evidence run facts */
.run { margin: 24px 0 0; display: grid; gap: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.run div { display: grid; grid-template-columns: 130px 1fr; gap: 14px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: rgba(10,15,30,.6); }
.run div:last-child { border-bottom: 0; }
.run dt { color: var(--mute); font-size: 14.5px; }
.run dd { margin: 0; color: var(--ink); font-size: 14px; }
.pill-ok { color: var(--mint); }

.tech .final { padding: 140px 0; }

/* responsive */
@media (max-width: 1080px) {
  .arch { grid-template-columns: 1fr; gap: 0; justify-items: stretch; padding: 22px; }
  .arch-link.plain { width: 2px; height: 26px; margin: 0 auto; }
  .arch-link.plain i { animation: none; display: none; }
  .arch-link.cw1 { height: 54px; margin: 0; }
  .facts-row, .crypto, .verdicts { grid-template-columns: 1fr; }
  .split, .split.rev { grid-template-columns: 1fr; gap: 36px; }
  .split.rev .frame { order: 2; }
}
@media (max-width: 760px) {
  .t-hero { padding: 116px 0 20px; }
  .t-sec { padding-top: 80px; }
  .q summary b { font-size: 16px; }
  .q ul { padding-left: 20px; }
  .run div { grid-template-columns: 1fr; gap: 2px; }
}
@media (prefers-reduced-motion: reduce) {
  .arch-link i { animation: none !important; display: none; }
}