/* DSP Feature Showcase — Digitrustec brand, light presentation theme.
   Layout: hero constellation → numbered sections, each = intro + animated hub diagram + clickable logo cards + modal. */
@font-face{font-family:"Inter";src:url("assets/fonts/inter-latin.woff2") format("woff2");font-weight:100 900;font-display:swap}
:root{
  --navy:#12304f; --brand:#1C4875; --blue:#4C9BD9; --accent:#0BA4E8;
  --ink:#16293c; --muted:#5c7186; --bg:#f4f8fb; --card:#ffffff; --line:#d9e5ef;
  --tint:#e8f2fa; --good:#1f8f5a; --shadow:0 10px 30px rgba(18,48,79,.10);
  --font:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6}
img{max-width:100%}
h1,h2,h3,h4{margin:0;line-height:1.18;text-wrap:balance}
p{margin:0}
button{font:inherit}
.wrap{max-width:1180px;margin:0 auto;padding-inline:max(18px,env(safe-area-inset-left,0px)) max(18px,env(safe-area-inset-right,0px))}

/* ---------- nav ---------- */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:14px;height:62px}
nav .logo{height:34px;flex:none}
.navlinks{display:flex;gap:2px;margin-left:auto;overflow-x:auto;min-width:0;scrollbar-width:none}
.navlinks::-webkit-scrollbar{display:none}
.navlinks a{color:var(--muted);text-decoration:none;font-size:.8rem;font-weight:600;padding:7px 10px;border-radius:8px;white-space:nowrap}
.navlinks a:hover,.navlinks a.on{color:var(--brand);background:var(--tint)}

/* ---------- hero ---------- */
header{background:linear-gradient(160deg,var(--navy) 0%,var(--brand) 62%,#2a6aa8 100%);color:#fff;overflow:hidden;position:relative}
header::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 78% 30%,rgba(76,155,217,.28),transparent 65%);pointer-events:none}
header .wrap{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;padding-block:76px 64px;position:relative;z-index:1}
.kicker{font-size:.72rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:#9fd1f5;margin-bottom:16px}
header h1{font-size:clamp(2.1rem,4.8vw,3.5rem);font-weight:800;letter-spacing:-.02em}
header h1 .hl{color:#7ec8f7}
.lede{color:#cfe2f2;font-size:1.06rem;max-width:36em;margin-top:18px}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-cta a{display:inline-block;text-decoration:none;font-weight:700;font-size:.86rem;padding:11px 20px;border-radius:999px}
.hero-cta .primary{background:#fff;color:var(--brand)}
.hero-cta .ghost{color:#fff;border:1px solid rgba(255,255,255,.45)}
.hero-cta a:hover{transform:translateY(-1px)}
/* constellation */
.constellation{position:relative;height:420px;min-width:0}
.constellation .hubchip{position:absolute;left:50%;top:50%;translate:-50% -50%;width:92px;height:92px;border-radius:24px;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 16px 40px rgba(0,0,0,.35);z-index:3}
.constellation .hubchip img{width:64px;height:64px;object-fit:contain}
.pulse{position:absolute;left:50%;top:50%;translate:-50% -50%;border-radius:50%;border:1.5px solid rgba(255,255,255,.35);animation:pulse 4.5s ease-out infinite}
.pulse.p1{width:150px;height:150px}
.pulse.p2{width:150px;height:150px;animation-delay:1.5s}
.pulse.p3{width:150px;height:150px;animation-delay:3s}
@keyframes pulse{0%{opacity:.8;scale:1}100%{opacity:0;scale:2.6}}
.ring{position:absolute;left:50%;top:50%;width:0;height:0;animation:spin linear infinite}
.ring.r1{animation-duration:70s}
.ring.r2{animation-duration:110s;animation-direction:reverse}
@keyframes spin{to{rotate:360deg}}
.chip{position:absolute;width:58px;height:58px;border-radius:16px;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(0,0,0,.28);translate:-50% -50%}
.chip img{width:40px;height:40px;object-fit:contain;border-radius:9px}
.ring.r1 .chip{animation:spin 70s linear infinite reverse}
.ring.r2 .chip{animation:spin 110s linear infinite}
/* stats band */
.stats{background:rgba(255,255,255,.07);border-top:1px solid rgba(255,255,255,.14);position:relative;z-index:1}
.stats .wrap{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;padding-block:22px}
.stat{text-align:center;padding:6px 2px}
.stat b{display:block;font-size:1.9rem;font-weight:800;color:#fff;font-variant-numeric:tabular-nums}
.stat span{font-size:.72rem;color:#b9d6ec;font-weight:600;letter-spacing:.02em}

/* ---------- sections ---------- */
section{padding-block:76px}
section.alt{background:#fff;border-block:1px solid var(--line)}
.sec-head{max-width:52em;margin-bottom:34px}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:.72rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.eyebrow::before{content:attr(data-n);display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;font-size:.8rem;letter-spacing:0}
.eyebrow:not([data-n])::before{display:none}
.sec-head h2{font-size:clamp(1.5rem,3.1vw,2.15rem);font-weight:800;color:var(--navy);letter-spacing:-.015em}
.sec-head p{color:var(--muted);margin-top:12px}
.reveal{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}
.reveal.pre{opacity:.001;transform:translateY(22px)}

/* ---------- contents map ---------- */
.tocband{background:var(--card);border-bottom:1px solid var(--line)}
.tocband .wrap{padding-block:40px 44px}
.tocband .eyebrow{margin-bottom:10px}
.tocband h2{font-size:clamp(1.3rem,2.6vw,1.75rem);font-weight:800;color:var(--navy);margin-bottom:26px}
.toc{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.tocgroup{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px 16px 18px;min-width:0;
  border-top:3px solid var(--blue)}
.tocgroup .tp{font-size:.64rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.tocgroup h3{font-size:.98rem;color:var(--navy);margin:5px 0 11px}
.tocgroup ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.tocgroup a{display:block;font-size:.82rem;color:var(--muted);text-decoration:none;padding:4px 8px;margin-left:-8px;border-radius:7px}
.tocgroup a:hover,.tocgroup a:focus-visible{color:var(--brand);background:var(--tint)}

/* ---------- chapter band ---------- */
.partband{background:linear-gradient(100deg,var(--navy),var(--brand) 70%,#2a6aa8);color:#fff}
.partband .wrap{padding-block:34px;display:flex;align-items:baseline;gap:20px;flex-wrap:wrap}
.partband .pnum{font-size:.7rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:#7ec8f7;
  border:1px solid rgba(126,200,247,.45);border-radius:999px;padding:6px 14px;flex:none}
.partband h2{font-size:clamp(1.25rem,2.6vw,1.7rem);font-weight:800;letter-spacing:-.01em}
.partband p{color:#cfe2f2;font-size:.88rem;flex:1;min-width:260px}

/* diagram panel */
.diagram{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:10px;margin-bottom:26px;overflow-x:auto}
.diagram svg{display:block;width:100%;height:auto;min-width:640px}
.diagram .node{cursor:pointer}
.diagram .node:hover .tile{stroke:var(--accent);stroke-width:2}
.diagram text{font-family:var(--font)}
.edge{fill:none;stroke:var(--blue);stroke-width:1.6;stroke-dasharray:5 7;opacity:.55;animation:flow 1.4s linear infinite}
@keyframes flow{to{stroke-dashoffset:-24}}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cards.three{grid-template-columns:repeat(3,1fr)}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;min-width:0;cursor:pointer;text-align:left;position:relative;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;display:flex;flex-direction:column;gap:10px}
.pcard:hover,.pcard:focus-visible{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow)}
.pcard .logo{height:54px;display:flex;align-items:center}
.pcard .logo img{max-height:46px;max-width:150px;object-fit:contain;border-radius:10px}
.pcard .logo .glyph{width:46px;height:46px;border-radius:12px;background:var(--tint);color:var(--brand);display:flex;align-items:center;justify-content:center}
.pcard h3{font-size:.98rem;font-weight:700;color:var(--navy)}
.pcard .ctx{font-size:.66rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.pcard p{font-size:.84rem;color:var(--muted);flex:1}
.pcard .more{font-size:.76rem;font-weight:700;color:var(--brand)}
.pcard .more::after{content:" →"}

/* feature (capabilities) cards reuse pcard with glyphs */

/* country flag badge */
.flagbadge{position:absolute;top:14px;right:14px;width:28px;height:19px;border-radius:3px;overflow:hidden;
  border:1px solid var(--line);box-shadow:0 1px 4px rgba(18,48,79,.16);display:block;background:#fff}
.flagbadge img{width:100%;height:100%;object-fit:cover;display:block}
.badge.flagb{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:#fff}
.badge.flagb img{width:18px;height:12px;object-fit:cover;border-radius:2px;display:block}

/* trust service providers — grouped by country */
.tgroups{display:flex;flex-direction:column;gap:14px}
.tgroup{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.thead{display:flex;align-items:center;gap:14px;padding:16px 22px;background:var(--tint);border-bottom:1px solid var(--line)}
.thead .tflag{width:46px;height:31px;object-fit:cover;border-radius:5px;border:1px solid var(--line);flex:none;background:#fff}
.thead h3{font-size:1.1rem;color:var(--navy)}
.thead span{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.tcards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:18px 22px 22px}
.tcard{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;min-width:0;cursor:pointer;text-align:left;
  display:flex;flex-direction:column;gap:9px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.tcard:hover,.tcard:focus-visible{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow)}
.tcard .tlogo{height:52px;display:flex;align-items:center;justify-content:flex-start}
.tcard .tlogo img{max-height:46px;max-width:140px;object-fit:contain}
.tcard h4{font-size:.95rem;font-weight:700;color:var(--navy)}
.tcard .role{font-size:.64rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.tcard p{font-size:.82rem;color:var(--muted)}
.tnote{display:flex;align-items:center;background:var(--tint);border:1px dashed var(--blue);border-radius:12px;
  padding:16px 20px;font-size:.85rem;color:var(--muted);min-width:0}

/* document formats */
.fmtlegend{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.fmtlegend .std{display:flex;align-items:baseline;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:9px 15px}
.fmtlegend .std b{font-size:.85rem;color:var(--brand)}
.fmtlegend .std span{font-size:.76rem;color:var(--muted)}

/* countries */
.countries{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.country{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;min-width:0;box-shadow:var(--shadow)}
.country .cc{font-size:.68rem;font-weight:800;letter-spacing:.16em;color:#fff;background:var(--brand);border-radius:6px;padding:4px 10px;display:inline-block;margin-bottom:12px}
.country h3{font-size:1.18rem;color:var(--navy);margin-bottom:6px}
.country .logorow{display:flex;gap:8px;margin:12px 0 14px}
.country .logorow img{height:38px;width:auto;max-width:78px;object-fit:contain;border-radius:9px;border:1px solid var(--line);background:#fff;padding:4px}
.country ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.country li{font-size:.86rem;color:var(--muted);display:flex;gap:9px;align-items:baseline}
.country li::before{content:"✓";color:var(--good);font-weight:800;flex:none}
.anywhere{grid-column:1/-1;display:flex;gap:18px;align-items:center;flex-wrap:wrap;background:var(--tint);border:1px dashed var(--blue);border-radius:16px;padding:20px 24px}
.anywhere img{width:52px;height:52px;object-fit:contain}
.anywhere p{font-size:.9rem;color:var(--muted);flex:1;min-width:260px}
.anywhere b{color:var(--ink)}

/* integration / deployment split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bigcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;min-width:0;box-shadow:var(--shadow)}
.bigcard h3{font-size:1.2rem;color:var(--navy);margin-bottom:16px}
.bigcard ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.bigcard li{display:flex;gap:11px;font-size:.89rem;color:var(--muted);align-items:baseline}
.bigcard li b{color:var(--ink)}
.bigcard li::before{content:"✓";color:var(--good);font-weight:800;flex:none}
.logostrip{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.logostrip .lchip{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 13px;font-size:.78rem;font-weight:700;color:var(--ink)}
.logostrip .lchip img{height:22px;width:auto;max-width:60px;object-fit:contain}

/* ---------- modal ---------- */
.overlay{position:fixed;inset:0;z-index:100;background:rgba(12,28,46,.55);display:flex;align-items:center;justify-content:center;
  padding:max(16px,env(safe-area-inset-left,0px));opacity:0;pointer-events:none;transition:opacity .22s ease}
.overlay.open{opacity:1;pointer-events:auto}
.modal{background:#fff;border-radius:18px;max-width:780px;width:100%;max-height:min(86vh,860px);overflow:auto;box-shadow:0 30px 80px rgba(0,0,0,.35);
  transform:translateY(16px) scale(.97);transition:transform .22s ease}
.overlay.open .modal{transform:none}
.modal-head{display:flex;gap:18px;align-items:center;padding:26px 28px 0;position:sticky;top:0;background:#fff;z-index:2}
.modal-head .mlogo{flex:none;width:72px;height:72px;border-radius:16px;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center}
.modal-head .mlogo img{max-width:58px;max-height:58px;object-fit:contain;border-radius:10px}
.modal-head .mlogo .glyph{color:var(--brand)}
.modal-head h3{font-size:1.3rem;color:var(--navy)}
.badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.badge{font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:var(--tint);color:var(--brand);border-radius:5px;padding:3px 9px}
.modal-close{margin-left:auto;align-self:flex-start;flex:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;font-size:1rem;font-weight:700}
.modal-close:hover{color:var(--ink);border-color:var(--accent)}
.modal-body{padding:18px 28px 30px;display:flex;flex-direction:column;gap:18px}
.modal-body h4{font-size:.72rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.modal-body p{font-size:.92rem;color:var(--ink)}
.modal-body ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}
.modal-body li{display:flex;gap:10px;font-size:.88rem;color:var(--muted);align-items:baseline}
.modal-body li b{color:var(--ink)}
.modal-body li::before{content:"—";color:var(--accent);font-weight:700;flex:none}
.flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.flow .step{background:var(--tint);border:1px solid var(--line);border-radius:9px;padding:7px 12px;font-size:.78rem;font-weight:600;color:var(--brand)}
.flow .arr{color:var(--blue);font-weight:800}

/* footer */
footer{background:var(--navy);color:#b9d6ec;padding-block:36px;margin-top:0}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
footer .brands{display:flex;align-items:center;gap:18px}
footer .brands img{height:30px;width:auto}
footer p{font-size:.78rem}
footer .credit{margin-top:8px;font-size:.74rem;color:#8fb6d4}
footer .credit b{color:#cfe2f2;font-weight:600}

/* responsive */
@media (max-width:980px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .cards.three{grid-template-columns:repeat(2,1fr)}
  .tcards{grid-template-columns:repeat(2,1fr)}
  .tnote{grid-column:span 1!important}
  .toc{grid-template-columns:repeat(2,1fr)}
  header .wrap{grid-template-columns:1fr;padding-block:56px 40px}
  .constellation{height:340px}
  .stats .wrap{grid-template-columns:repeat(3,1fr)}
  .countries{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  .cards,.cards.three,.countries,.split,.tcards,.toc{grid-template-columns:1fr}
  .tnote{grid-column:1/-1!important}
  .tcards{padding:14px 16px 18px}
  .thead{padding:14px 16px}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  section{padding-block:54px}
  .modal-head{padding:20px 18px 0}
  .modal-body{padding:14px 18px 24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}