/* TechVyne — private-placement prospectus: serif wordmark, hairline rules, numbered articles */
:root {
  --ink:         #0A0A0A;
  --ink-2:       #161616;
  --paper:       #F8F8F8;
  --paper-2:     #EFEFEF;
  --desk:        #C8C8C8;
  --white:       #FFFFFF;
  --violet:      #5503F4;
  --violet-deep: #350695;
  --violet-mid:  #450EB2;
  --gray:        #626262;
  --muted:       #4A4A4A;
  --line:        #D4D4D4;
  --line-2:      #B8B8B8;
  --on-dark:     #F8F8F8;
  --on-dark-dim: #D4D4D4;
  --serif:       "Cormorant Infant", "Iowan Old Style", Palatino, serif;
  --sans:        "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --maxw:        1080px;
  --header-h:    76px;
  --ease:        cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

html, body { overflow-x: hidden; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background: var(--desk);
}

h1, h2, h3, .brand-name, .mast, .pull, .art-roman, .art-index, .party-no, .clause-no {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}
p, li { overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; }
li { list-style: none; }
button { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 400;
  background: var(--violet); color: var(--on-dark);
  padding: 10px 16px; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ===== Desk + sheet (print circular) ===== */
.desk {
  min-height: 100vh;
  padding: 28px 18px 40px;
}
.sheet {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  background: var(--paper);
  box-shadow: 0 24px 60px -28px rgba(10, 10, 10, .35);
  overflow: clip;
}

/* Print crop marks */
.crop {
  position: absolute;
  width: 18px;
  height: 18px;
  z-index: 5;
  pointer-events: none;
}
.crop::before, .crop::after {
  content: "";
  position: absolute;
  background: var(--ink);
}
.crop::before { width: 18px; height: 1px; }
.crop::after  { width: 1px; height: 18px; }
.crop.tl { top: 10px; left: 10px; }
.crop.tl::before { top: 0; left: 0; }
.crop.tl::after  { top: 0; left: 0; }
.crop.tr { top: 10px; right: 10px; }
.crop.tr::before { top: 0; right: 0; }
.crop.tr::after  { top: 0; right: 0; }
.crop.bl { bottom: 10px; left: 10px; }
.crop.bl::before { bottom: 0; left: 0; }
.crop.bl::after  { bottom: 0; left: 0; }
.crop.br { bottom: 10px; right: 10px; }
.crop.br::before { bottom: 0; right: 0; }
.crop.br::after  { bottom: 0; right: 0; }

/* Moving security thread */
.thread {
  position: absolute;
  left: 22px;
  top: 0;
  bottom: 0;
  width: 1px;
  z-index: 4;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    var(--violet) 0 7px,
    transparent 7px 16px
  );
  background-size: 1px 16px;
  opacity: .38;
  animation: thread 10s linear infinite;
}
@keyframes thread {
  to { background-position: 0 16px; }
}

.double-rule {
  height: 5px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin: 0;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(248, 248, 248, .92);
  backdrop-filter: blur(12px);
}
.site-header.scrolled {
  box-shadow: 0 10px 24px -18px rgba(10, 10, 10, .45);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  flex: 0 0 auto;
}
.brand-name {
  font-size: 1.35rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px 18px;
}
.nav a {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 8px 0;
}
.nav .nav-cta {
  border: 1px solid var(--ink);
  padding: 8px 14px;
  color: var(--ink);
  letter-spacing: 0.12em;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--ink);
  background: transparent;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
}

/* ===== Cover ===== */
.cover {
  position: relative;
  padding: 36px 0 72px;
  overflow: hidden;
}
.cover-scan {
  position: absolute;
  left: 48px;
  right: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--violet), transparent);
  opacity: 0;
  animation: scan 7.5s 0.8s ease-in-out infinite;
  pointer-events: none;
  z-index: 1;
}
@keyframes scan {
  0%   { top: 12%; opacity: 0; }
  8%   { opacity: .85; }
  92%  { opacity: .55; }
  100% { top: 88%; opacity: 0; }
}

.running {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 36px;
}
.run-gap {
  flex: 1 1 24px;
  height: 1px;
  background: var(--line);
  margin: 0 12px;
  min-width: 24px;
}

.cover-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: 48px 40px;
  align-items: start;
}
.industry {
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--violet);
  font-weight: 600;
  margin-bottom: 10px;
}
.mast {
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 0.92;
  margin-bottom: 8px;
}
.tag {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: 22px;
}
.cover h1 {
  font-size: clamp(2.05rem, 4.4vw, 3.15rem);
  font-weight: 500;
  max-width: 18ch;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 16px;
}
.cover h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 0;
  background: var(--violet);
  animation: ruleOut 1.6s 0.35s var(--ease) forwards;
}
@keyframes ruleOut {
  to { width: min(220px, 70%); }
}
.lede {
  max-width: 46ch;
  color: var(--muted);
  margin-bottom: 28px;
}
.cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.cover-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.cover-meta li {
  position: relative;
}
.cover-meta li + li::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--violet);
  transform: translateY(-50%);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: transform .3s var(--ease), background .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease);
}
.btn-primary {
  background: var(--ink);
  color: var(--on-dark);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
}

/* TOC plate with drawing frame */
.toc-plate {
  position: relative;
  padding: 36px 28px 28px;
  min-height: 420px;
}
.plate-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.plate-frame .frame-outer,
.plate-frame .frame-inner,
.plate-frame .frame-rule {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.plate-frame .frame-inner { stroke: var(--violet); }
.plate-frame .frame-outer,
.plate-frame .frame-inner {
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: draw 2.4s var(--ease) forwards;
}
.plate-frame .frame-inner { animation-delay: .35s; }
.plate-frame .frame-rule {
  stroke-dasharray: 320;
  stroke-dashoffset: 320;
  animation: draw 1.2s 0.9s var(--ease) forwards;
}
@keyframes draw {
  to { stroke-dashoffset: 0; }
}

.seal {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
}
.seal .gear {
  position: absolute;
  inset: 0;
  fill: none;
  stroke: var(--violet);
  stroke-width: 1.4;
  animation: spin 28s linear infinite;
  transform-origin: 50% 50%;
}
.seal .gear circle { fill: var(--paper); }
.seal span {
  position: relative;
  z-index: 1;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 14px;
  color: var(--violet);
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.toc-kicker {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 8px 0 22px;
  padding-right: 72px;
}
.toc { display: grid; gap: 2px; }
.toc a {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dotted var(--line-2);
  transition: transform .3s var(--ease), color .3s var(--ease);
}
.toc em {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--violet);
}
.toc span {
  font-size: 14px;
  letter-spacing: 0.04em;
}
.toc b {
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gray);
}
.toc-note {
  margin-top: 18px;
  font-size: 12px;
  color: var(--gray);
  font-style: italic;
  font-family: var(--serif);
}

/* ===== Articles ===== */
.article {
  position: relative;
  padding: 80px 0;
  border-top: 1px solid var(--ink);
}
.article-tint { background: var(--paper-2); }
.article-inner { position: relative; }
.art-index {
  position: absolute;
  right: 28px;
  top: 0;
  font-size: clamp(4rem, 10vw, 7rem);
  line-height: 0.8;
  color: rgba(85, 3, 244, .08);
  pointer-events: none;
  letter-spacing: -0.04em;
  font-weight: 600;
}
.art-roman {
  font-style: italic;
  font-size: 1.15rem;
  color: var(--violet);
  margin-bottom: 8px;
}
.art-roman.light { color: #C9B6FF; }
.art-head h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.hairline {
  width: 72px;
  height: 1px;
  background: var(--ink);
  margin: 16px 0 28px;
  transform-origin: left;
  animation: hair 1.1s var(--ease) both;
}
@keyframes hair {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
.art-body {
  display: grid;
  gap: 18px;
  max-width: 68ch;
}
.drop {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1.5;
}
.art-lead {
  max-width: 58ch;
  color: var(--muted);
  margin-bottom: 32px;
}

.parties {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink);
}
.party {
  padding: 28px 24px 8px 0;
  border-right: 1px solid var(--line);
  transition: transform .35s var(--ease), background .35s var(--ease);
}
.party:last-child { border-right: 0; padding-right: 0; }
.party:first-child { padding-left: 0; }
.party + .party { padding-left: 24px; }
.party-no {
  font-size: 1.35rem;
  color: var(--violet);
  margin-bottom: 10px;
}
.party h3 {
  font-size: 1.45rem;
  margin-bottom: 10px;
}
.party p { color: var(--muted); font-size: 15px; }

.clauses {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink);
}
.clause {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: transform .35s var(--ease), background .35s var(--ease);
}
.clause-no {
  font-size: 1.15rem;
  color: var(--violet);
  padding-top: 4px;
}
.clause h3 { font-size: 1.45rem; margin-bottom: 6px; }
.clause p { color: var(--muted); }

/* ===== Dark statement band ===== */
.band-dark {
  background: var(--ink);
  color: var(--on-dark);
  padding: 88px 0;
  position: relative;
}
.band-dark::before,
.band-dark::after {
  content: "";
  position: absolute;
  left: 28px;
  right: 28px;
  height: 1px;
  background: rgba(248, 248, 248, .35);
}
.band-dark::before { top: 18px; }
.band-dark::after  { bottom: 18px; }
.pull {
  max-width: 22ch;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  font-style: italic;
  font-weight: 500;
  color: var(--on-dark);
  margin-top: 18px;
}
.pull p { color: var(--on-dark); }
.pull cite {
  display: block;
  margin-top: 22px;
  font-family: var(--sans);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
}

/* ===== FAQ ===== */
.faq-list { max-width: 760px; border-top: 1px solid var(--ink); }
.faq-item {
  border-bottom: 1px solid var(--line);
  transition: background .3s var(--ease);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  background: none;
  border: 0;
  padding: 20px 4px;
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--ink);
  cursor: pointer;
}
.faq-ico {
  width: 14px;
  height: 14px;
  position: relative;
  flex: 0 0 auto;
}
.faq-ico::before, .faq-ico::after {
  content: "";
  position: absolute;
  background: var(--violet);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.faq-ico::before { width: 14px; height: 1px; }
.faq-ico::after  { width: 1px; height: 14px; }
.faq-item.open .faq-ico::after { display: none; }
.faq-a {
  display: none;
  padding: 0 4px 20px;
  color: var(--muted);
  max-width: 62ch;
}
.faq-item.open .faq-a { display: block; }

/* ===== Subscription / contact ===== */
.subscribe {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px 48px;
  align-items: start;
}
.contact-email {
  display: inline-block;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  border-bottom: 1px solid var(--violet);
  margin: 8px 0 10px;
  color: var(--ink);
}
.contact-where {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}
.sign-block {
  margin-top: 36px;
  max-width: 280px;
}
.sign-block p:first-child {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
}
.sign-line {
  display: block;
  height: 1px;
  background: var(--ink);
  margin: 36px 0 10px;
}
.sign-block p:last-child {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px 24px;
  border: 1px solid var(--ink);
  background: var(--white);
}
.field { display: grid; gap: 6px; }
.field label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
}
.field input, .field textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  padding: 10px 0;
  font: inherit;
  color: var(--ink);
  border-radius: 0;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-bottom-color: var(--violet);
}
.contact-form .btn { justify-self: start; margin-top: 8px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: var(--on-dark);
  padding-bottom: 28px;
}
.site-footer .double-rule {
  border-color: rgba(248, 248, 248, .4);
  margin-bottom: 28px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 8px 0 24px;
  border-bottom: 1px solid rgba(248, 248, 248, .2);
}
.site-footer .brand-name { color: var(--on-dark); }
.footer-tag {
  margin-top: 8px;
  font-family: var(--serif);
  font-style: italic;
  color: var(--on-dark-dim);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.footer-nav a {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 16px;
  font-size: 12px;
  color: var(--on-dark-dim);
}

/* ===== Reveal (must precede hover transforms) ===== */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .thread, .cover-scan, .seal .gear, .cover h1::after,
  .plate-frame .frame-outer, .plate-frame .frame-inner, .plate-frame .frame-rule,
  .hairline { animation: none; }
  .plate-frame .frame-outer,
  .plate-frame .frame-inner,
  .plate-frame .frame-rule { stroke-dashoffset: 0; }
  .cover h1::after { width: min(220px, 70%); }
}

/* Hover AFTER .reveal.in so lift is not overwritten */
@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-2px);
    background: var(--violet);
    border-color: var(--violet);
    box-shadow: 0 14px 28px -16px rgba(85, 3, 244, .7);
  }
  .btn-ghost:hover {
    transform: translateY(-2px);
    border-color: var(--violet);
    color: var(--violet-deep);
  }
  .nav a:hover { color: var(--ink); }
  .nav .nav-cta:hover {
    background: var(--ink);
    color: var(--on-dark);
    transform: translateY(-2px);
  }
  .toc a:hover {
    transform: translateX(6px);
    color: var(--violet-deep);
  }
  .party:hover {
    transform: translateY(-6px);
    background: var(--white);
  }
  .clause:hover {
    transform: translateX(8px);
    background: rgba(85, 3, 244, .04);
  }
  .faq-q:hover { color: var(--violet-deep); }
  .faq-item:hover { background: var(--white); }
  .contact-email:hover { color: var(--violet); border-bottom-color: var(--violet); }
  .footer-nav a:hover { color: var(--on-dark); }
  .contact-form .btn-primary:hover { transform: translateY(-2px); }
}

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .cover-grid { grid-template-columns: 1fr; gap: 36px; }
  .toc-plate { min-height: 0; }
  .parties { grid-template-columns: 1fr; }
  .party, .party + .party, .party:last-child {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .subscribe { grid-template-columns: 1fr; gap: 32px; }
  .art-index { right: 16px; }
}

@media (max-width: 720px) {
  .desk { padding: 0; }
  .thread { left: 10px; }
  .crop { display: none; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(248, 248, 248, .98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--ink);
    padding: 8px 24px 20px;
    transform: translateY(-120%);
    transition: transform .35s var(--ease);
    z-index: 90;
  }
  .nav.open { transform: translateY(0); }
  .nav a {
    padding: 14px 4px;
    font-size: 14px;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
  }
  .nav .nav-cta {
    text-align: center;
    margin-top: 12px;
    border: 1px solid var(--ink);
  }
  .cover { padding: 24px 0 56px; }
  .article { padding: 64px 0; }
  .band-dark { padding: 64px 0; }
  .mast { letter-spacing: 0.04em; }
  .clause { grid-template-columns: 56px minmax(0, 1fr); gap: 12px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .header-inner { height: 68px; }
  .nav { inset: 68px 0 auto 0; }
  .cover-actions { flex-direction: column; align-items: stretch; }
  .cover-actions .btn { width: 100%; }
  .footer-inner, .footer-bottom { flex-direction: column; }
  .contact-form { padding: 20px 16px; }
  .running { gap: 6px 0; }
  .run-gap { display: none; }
  .running span { width: 100%; }
  .seal { width: 52px; height: 52px; }
}

@media (max-width: 390px) {
  .container { padding: 0 16px; }
  .cover { padding: 16px 0 44px; }
  .cover h1 { font-size: 1.85rem; }
  .mast { font-size: 2.6rem; }
  .article { padding: 52px 0; }
  .band-dark { padding: 52px 0; }
  .party { padding: 18px 0; }
  .faq-q { padding: 16px 0; font-size: 1.15rem; }
  .toc-plate { padding: 28px 16px 20px; }
  .lede { font-size: 15px; }
  .brand-name { font-size: 1.05rem; letter-spacing: 0.14em; }
  .thread { display: none; }
  .art-index { font-size: 3.4rem; }
}