/* ============================================================
   SDE INVESTMENTS LLC — "Engraved Ledger" design system
   Graphite-black, glacier-cyan accent, silver secondary,
   Instrument Serif display, certificate/guilloche borders
   ============================================================ */

:root {
  --bg: #06090d;
  --bg2: #0a0f14;
  --panel: #0e141b;
  --panel-hi: #121a23;
  --edge: #1f2c38;
  --edge-soft: #141e28;
  --cyan: #3ad2e0;
  --cyan-hi: #7de3ec;
  --cyan-deep: #1f7d88;
  --silver: #a8c0cf;
  --silver-deep: #486175;
  --txt: #eef4f8;
  --sub: #a2b3c0;
  --dim: #5d6e7d;
  --disp: "Instrument Serif", "Georgia", serif;
  --body-f: "Inter", "Segoe UI", Arial, sans-serif;
  --mono: "Fira Code", "Consolas", monospace;
  --head-h: 78px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--sub);
  font-family: var(--body-f);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--cyan); color: var(--bg); }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--cyan-hi); }

h1, h2, h3, h4 {
  font-family: var(--disp);
  color: var(--txt);
  font-weight: 400;
  line-height: 1.15;
}

h1 i, h2 i, h3 i { font-style: italic; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 42px; }

.k-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 3.4px;
  text-transform: uppercase;
  color: var(--cyan);
}

.k-label.sv { color: var(--silver); }

/* Guilloche-ish ornamental rule */

.guilloche {
  height: 14px;
  background:
    repeating-radial-gradient(circle at 50% -20px, transparent 0 8px, var(--cyan-deep) 8px 9px, transparent 9px 18px);
  opacity: .7;
}

.rule-double {
  border-top: 3px double var(--edge);
}

/* ---------------- Header ---------------- */

.bank-head {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  background: var(--bg);
  border-bottom: 3px double var(--edge);
}

.bank-head .wrap {
  height: var(--head-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.blogo { display: flex; align-items: center; gap: 14px; }

.blogo-seal {
  width: 46px; height: 46px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  display: grid;
  place-items: center;
  position: relative;
  flex-shrink: 0;
}

.blogo-seal::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px dashed var(--cyan-deep);
  border-radius: 50%;
}

.blogo-seal b {
  font-family: var(--disp);
  font-style: italic;
  font-size: 16px;
  color: var(--cyan);
}

.blogo-word {
  font-family: var(--disp);
  font-size: 21px;
  color: var(--txt);
  letter-spacing: 1.8px;
  line-height: 1.15;
  text-transform: uppercase;
}

.blogo-word small {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 3.4px;
  color: var(--dim);
  margin-top: 3px;
}

.bnav { display: flex; align-items: center; gap: 4px; }

.bnav a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--sub);
  padding: 10px 14px;
  transition: color .2s;
}

.bnav a:hover { color: var(--txt); }
.bnav a.active { color: var(--cyan); }

.bnav .wire {
  color: var(--bg) !important;
  background: var(--cyan);
  font-weight: 700;
  margin-left: 10px;
  padding: 12px 22px;
}

.bnav .wire:hover { background: var(--cyan-hi); }

.burger {
  display: none;
  background: none;
  border: 1px solid var(--edge);
  color: var(--txt);
  width: 44px; height: 44px;
  font-size: 18px;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--head-h);
  left: 0; right: 0;
  z-index: 290;
  background: var(--bg2);
  border-bottom: 1px solid var(--edge);
  padding: 10px 24px 24px;
}

.mobile-nav.open { display: block; }

.mobile-nav a {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sub);
  padding: 14px 0;
  border-bottom: 1px solid var(--edge-soft);
}

.mobile-nav a.active { color: var(--cyan); }

main { padding-top: var(--head-h); }

/* ---------------- Hero — certificate frame ---------------- */

.hero {
  position: relative;
  border-bottom: 1px solid var(--edge-soft);
  padding: 100px 0 90px;
  background:
    radial-gradient(900px 400px at 50% -100px, #0d1a22 0%, transparent 70%);
}

.cert-frame {
  max-width: 960px;
  margin: 0 auto;
  border: 1px solid var(--cyan-deep);
  padding: 12px;
  position: relative;
}

.cert-inner {
  border: 1px solid var(--edge);
  padding: 68px 54px 60px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(420px 200px at 50% 0%, #0f1d26 0%, transparent 70%);
}

.cert-inner .corner {
  position: absolute;
  width: 26px; height: 26px;
}

.cert-inner .corner.tl { top: 8px; left: 8px; border-top: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.cert-inner .corner.tr { top: 8px; right: 8px; border-top: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }
.cert-inner .corner.bl { bottom: 8px; left: 8px; border-bottom: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.cert-inner .corner.br { bottom: 8px; right: 8px; border-bottom: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }

.hero .k-label { display: inline-block; margin-bottom: 28px; }

.hero h1 {
  font-size: clamp(46px, 6.4vw, 84px);
  letter-spacing: -0.5px;
}

.hero h1 .cy { color: var(--cyan); }
.hero h1 .sv { color: var(--silver); }

.hero .lede {
  margin: 30px auto 0;
  font-size: 17px;
  max-width: 600px;
}

.hero-cta { margin-top: 42px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--cyan);
  transition: background .2s, color .2s, border-color .2s;
}

.btn-fill { background: var(--cyan); color: var(--bg); }
.btn-fill:hover { background: var(--cyan-hi); border-color: var(--cyan-hi); color: var(--bg); }

.btn-line { background: transparent; color: var(--txt); border-color: var(--edge); }
.btn-line:hover { border-color: var(--cyan); color: var(--cyan); }

.hero .guilloche { margin-top: 46px; }

/* ---------------- Sections ---------------- */

.section { padding: 100px 0; border-bottom: 1px solid var(--edge-soft); }

.sec-line {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}

.sec-line::before, .sec-line::after { content: ""; height: 1px; background: var(--edge-soft); }
.sec-line::before { width: 60px; }
.sec-line::after { flex: 1; }

.sec-head { margin-bottom: 60px; }
.sec-head h2 { font-size: clamp(34px, 4.4vw, 56px); letter-spacing: -0.5px; }
.sec-head h2 .cy { color: var(--cyan); }
.sec-head h2 .sv { color: var(--silver); }
.sec-head .sub { margin-top: 20px; max-width: 560px; font-size: 16px; }

/* ---------------- Division cards (certificate style) ---------------- */

.div-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.division {
  border: 1px solid var(--edge);
  background: var(--panel);
  padding: 10px;
  transition: border-color .25s, transform .25s;
}

.division:hover { border-color: var(--cyan-deep); transform: translateY(-4px); }

.division .dv-in {
  border: 1px solid var(--edge-soft);
  padding: 38px 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.division .dv-num {
  font-family: var(--disp);
  font-style: italic;
  font-size: 15px;
  color: var(--cyan);
  letter-spacing: 1px;
}

.division h3 { font-size: 26px; margin: 16px 0 14px; letter-spacing: -0.3px; }
.division p { font-size: 14.5px; flex: 1; }

.division .dv-list {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 3px double var(--edge);
  list-style: none;
}

.division .dv-list li {
  font-size: 13px;
  color: var(--dim);
  padding: 6px 0;
  border-bottom: 1px dashed var(--edge-soft);
}

.division .dv-list li:last-child { border-bottom: 0; }
.division .dv-list li b { color: var(--sub); font-weight: 500; }

/* ---------------- Ledger rows ---------------- */

.ledger-table { border-top: 3px double var(--edge); }

.ledger-row {
  display: grid;
  grid-template-columns: 120px 1.5fr 1.2fr auto;
  gap: 32px;
  align-items: baseline;
  padding: 22px 12px;
  border-bottom: 1px dashed var(--edge);
  transition: background .2s;
}

.ledger-row:hover { background: var(--panel); }

.ledger-row .ln {
  font-family: var(--disp);
  font-style: italic;
  font-size: 16px;
  color: var(--cyan-deep);
}

.ledger-row .lt { font-size: 16px; color: var(--txt); font-weight: 500; }
.ledger-row .ld { font-size: 13.5px; color: var(--sub); }

.ledger-row .lr {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--silver);
  border: 1px solid var(--edge);
  padding: 5px 12px;
}

/* ---------------- Split ---------------- */

.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 76px;
  align-items: center;
}

.duo h2 { font-size: clamp(30px, 3.8vw, 48px); letter-spacing: -0.5px; }
.duo h2 .cy { color: var(--cyan); }
.duo h2 .sv { color: var(--silver); }
.duo > div > p { margin-top: 18px; font-size: 15.5px; }

/* Indenture panel */

.indenture {
  border: 1px solid var(--cyan-deep);
  background: var(--panel);
  padding: 10px;
}

.indenture .in-body {
  border: 1px solid var(--edge);
  padding: 34px;
}

.indenture .in-head {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  border-bottom: 3px double var(--edge);
  padding-bottom: 16px;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.indenture .in-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--edge-soft);
  font-size: 14px;
}

.indenture .in-row:last-child { border-bottom: 0; }

.indenture .in-row .k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 4px;
}

.indenture .in-row .v { color: var(--txt); text-align: right; }

/* ---------------- Stats ---------------- */

.stat-frame {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 3px double var(--edge);
  background: var(--bg2);
}

.stat {
  padding: 42px 32px;
  border-right: 1px solid var(--edge-soft);
  text-align: center;
}

.stat:last-child { border-right: 0; }

.stat .n {
  font-family: var(--disp);
  font-size: 54px;
  color: var(--txt);
  line-height: 1;
}

.stat .n i { font-style: normal; color: var(--cyan); }
.stat .n b { font-weight: 400; color: var(--silver); font-style: normal; }

.stat .c {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 14px;
}

/* ---------------- Quote ---------------- */

.quote-sect {
  padding: 96px 0;
  text-align: center;
}

.quote-sect .qt {
  font-family: var(--disp);
  font-style: italic;
  font-size: clamp(26px, 3.4vw, 42px);
  color: var(--txt);
  max-width: 820px;
  margin: 0 auto;
  line-height: 1.4;
}

.quote-sect cite {
  display: block;
  margin-top: 32px;
  font-family: var(--mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
}

.quote-sect .guilloche { max-width: 400px; margin: 36px auto 0; }

/* ---------------- CTA ---------------- */

.cta-plate {
  padding: 104px 0;
  text-align: center;
  background:
    radial-gradient(700px 320px at 50% 100%, #0e1d26 0%, transparent 70%);
  border-top: 1px solid var(--edge);
}

.cta-plate .k-label { display: inline-block; margin-bottom: 24px; }
.cta-plate h2 { font-size: clamp(34px, 4.6vw, 62px); letter-spacing: -0.5px; }
.cta-plate h2 .cy { color: var(--cyan); }
.cta-plate p { margin: 24px auto 42px; max-width: 560px; font-size: 16px; }

/* ---------------- Disclaimer band ---------------- */

.disc-band {
  border: 3px double var(--cyan-deep);
  background: var(--panel);
  padding: 32px 38px;
}

.disc-band .t {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.8px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}

.disc-band p { font-size: 13.5px; color: var(--sub); }

/* ---------------- Footer ---------------- */

.bank-foot {
  border-top: 3px double var(--edge);
  background: var(--bg2);
  padding: 72px 0 38px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--edge-soft);
}

.foot-grid h4 {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 20px;
}

.foot-grid ul { list-style: none; }
.foot-grid li { margin-bottom: 11px; font-size: 14px; }
.foot-grid li a { color: var(--sub); }
.foot-grid li a:hover { color: var(--cyan); }

.foot-desc { margin-top: 18px; font-size: 13.5px; max-width: 340px; color: var(--dim); }

.foot-legal {
  padding: 22px 0;
  font-size: 12px;
  color: var(--dim);
  border-bottom: 1px solid var(--edge-soft);
  margin-bottom: 26px;
}

.foot-bar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 1px;
  color: var(--dim);
}

.foot-bar a { color: var(--sub); }
.foot-bar a:hover { color: var(--cyan); }

/* ---------------- Page hero ---------------- */

.page-hero {
  padding: 96px 0 72px;
  border-bottom: 3px double var(--edge);
  text-align: center;
  background:
    radial-gradient(600px 260px at 50% -80px, #0d1a22 0%, transparent 70%);
}

.crumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.6px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 28px;
}

.crumb a { color: var(--cyan); }

.page-hero h1 { font-size: clamp(40px, 5.4vw, 72px); letter-spacing: -0.5px; }
.page-hero h1 .cy { color: var(--cyan); }
.page-hero h1 .sv { color: var(--silver); }
.page-hero .lede { margin: 26px auto 0; max-width: 620px; font-size: 17px; }
.page-hero .guilloche { max-width: 400px; margin: 38px auto 0; }

/* ---------------- Contact ---------------- */

.contact-cols {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 64px;
  padding: 84px 0;
}

.wire-slip {
  border: 1px solid var(--edge);
  background: var(--panel);
  padding: 24px 28px;
  margin-bottom: 18px;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 22px;
  align-items: start;
}

.wire-slip .fld {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--cyan);
  padding-top: 5px;
}

.wire-slip .val {
  font-family: var(--disp);
  font-size: 22px;
  color: var(--txt);
  line-height: 1.35;
}

.wire-slip .val a { color: var(--txt); }
.wire-slip .val a:hover { color: var(--cyan); }

.wire-slip .nt { grid-column: 2; font-size: 13px; color: var(--dim); }

.form-cert {
  border: 1px solid var(--cyan-deep);
  background: var(--panel);
  padding: 10px;
}

.form-cert .fc-in { border: 1px solid var(--edge); padding: 44px; }

.form-cert h2 { font-size: 30px; letter-spacing: -0.3px; margin-bottom: 8px; }
.form-cert .fc-in > p { font-size: 13px; color: var(--dim); margin-bottom: 32px; font-family: var(--mono); }

.f-field { margin-bottom: 20px; }

.f-field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 9px;
}

.f-field input,
.f-field select,
.f-field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--edge);
  color: var(--txt);
  font-family: var(--body-f);
  font-size: 15px;
  padding: 14px 16px;
  outline: none;
  transition: border-color .2s;
}

.f-field textarea { min-height: 140px; resize: vertical; }

.f-field input:focus,
.f-field select:focus,
.f-field textarea:focus { border-color: var(--cyan); }

.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.f-note { font-size: 12px; color: var(--dim); margin-top: 16px; font-family: var(--mono); }

/* ---------------- Legal prose ---------------- */

.prose { max-width: 840px; margin: 0 auto; padding: 76px 0 100px; }

.prose .policy-head {
  border: 3px double var(--cyan-deep);
  background: var(--panel);
  padding: 30px 34px;
  margin-bottom: 44px;
  font-size: 15.5px;
}

.prose .upd {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid var(--cyan-deep);
  padding: 7px 14px;
  margin-bottom: 26px;
}

.prose h2 {
  font-size: 28px;
  margin: 54px 0 18px;
  padding-top: 38px;
  border-top: 3px double var(--edge-soft);
  letter-spacing: -0.3px;
}

.prose h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 44px; }
.prose h3 { font-size: 19px; margin: 30px 0 10px; }
.prose p { margin-bottom: 15px; font-size: 15.5px; }
.prose ul { margin: 0 0 15px 22px; font-size: 15.5px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--txt); }

/* ---------------- FAQ ---------------- */

.faq { border-top: 3px double var(--edge); max-width: 900px; }

.faq-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  padding: 30px 8px;
  border-bottom: 1px dashed var(--edge);
}

.faq-row .qn {
  font-family: var(--disp);
  font-style: italic;
  font-size: 16px;
  color: var(--cyan-deep);
  padding-top: 4px;
}

.faq-row h3 { font-size: 20px; margin-bottom: 10px; }
.faq-row p { font-size: 14.5px; }

/* ---------------- Reveal ---------------- */

.rv { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.rv.in { opacity: 1; transform: none; }

/* ---------------- Responsive ---------------- */

@media (max-width: 1080px) {
  .bnav { display: none; }
  .burger { display: block; }
  .duo { grid-template-columns: 1fr; gap: 48px; }
  .contact-cols { grid-template-columns: 1fr; gap: 48px; }
  .div-grid { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: 70px 1fr; }
  .ledger-row .ld, .ledger-row .lr { grid-column: 2; }
  .stat-frame { grid-template-columns: 1fr 1fr; }
  .stat { border-bottom: 1px solid var(--edge-soft); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .wrap { padding: 0 26px; }
  .cert-inner { padding: 44px 26px; }
  .form-cert .fc-in { padding: 30px 22px; }
  .f-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .stat-frame { grid-template-columns: 1fr; }
}