/* ORIVOND website. Theme "Cited": near-black on white, navy only where something is cited,
   square markers, sharp corners. Fonts are bundled (IBM Plex, SIL OFL 1.1 in fonts/OFL.txt). */
@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-display: swap; src: url("/fonts/IBMPlexSans-Regular-Latin1.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexSans-Medium-Latin1.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 600; font-display: swap; src: url("/fonts/IBMPlexSans-SemiBold-Latin1.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 400; font-display: swap; src: url("/fonts/IBMPlexMono-Regular-Latin1.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexMono-Medium-Latin1.woff2") format("woff2"); }

:root {
  --ink: #111418; --ink-2: #3a414c; --muted: #5b6270; --line: #e3e6eb; --line-strong: #c9ced6;
  --bg: #ffffff; --soft: #f5f6f8; --card: #ffffff;
  --accent: #1d3f8f; --accent-2: #2b55b8; --accent-soft: #e8eef9; --accent-on-dark: #8fa8e8;
  --bad: #a4161a; --warn: #b45309;
  --dark: #0d0f13; --dark-2: #161a20; --dark-line: #262b33; --on-dark: #e6e8eb; --on-dark-2: #9aa1ad;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --shadow: 0 1px 2px rgba(17, 20, 24, .06), 0 24px 60px -28px rgba(17, 20, 24, .35);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.6;
       -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.mono { font-family: var(--mono); }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 50; }
.skip:focus { left: 8px; }

/* Square markers, from the logo's footnote square. */
.sq { display: inline-block; width: 10px; height: 10px; background: var(--ink); flex: none; }
.sq.accent { background: var(--accent); }
.sq.bad { background: var(--bad); }

.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font-family: var(--mono); font-size: .78rem;
           font-weight: 500; letter-spacing: .1em; color: var(--muted); }
.eyebrow.on-dark { color: var(--on-dark-2); }
h1, .h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.6rem, 5.6vw, 4.4rem); line-height: 1.04; letter-spacing: -0.035em; }
.h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.12; letter-spacing: -0.03em; max-width: 20ch; }
h3 { font-size: 1.2rem; line-height: 1.3; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 36em; margin: 24px 0 0; }
.lede.on-dark { color: var(--on-dark-2); }

/* Buttons */
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 26px;
          background: var(--ink); color: #fff; border: 1px solid var(--ink); font-weight: 600; font-size: 1rem;
          text-decoration: none; transition: background .15s, color .15s, border-color .15s, transform .15s; }
.button:hover { background: var(--accent); border-color: var(--accent); }
.button:active { transform: translateY(1px); }
.button.small { min-height: 40px; padding: 0 16px; font-size: .9rem; }
.button.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.button.ghost:hover { border-color: var(--ink); background: transparent; }
.button.inverse { background: #fff; color: var(--ink); border-color: #fff; }
.button.inverse:hover { background: var(--accent-on-dark); border-color: var(--accent-on-dark); }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .86);
       backdrop-filter: saturate(160%) blur(12px); -webkit-backdrop-filter: saturate(160%) blur(12px);
       border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s; }
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 24px -20px rgba(17, 20, 24, .4); }
.nav-row { display: flex; align-items: center; gap: 32px; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none;
         font-weight: 600; font-size: 1.05rem; letter-spacing: .16em; }
.brand .mark { width: 28px; height: 28px; flex: none; }
.mark-dot { fill: var(--accent); }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { color: var(--ink-2); text-decoration: none; font-size: .95rem; }
.nav-links a:hover { color: var(--ink); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 40px;
        background: radial-gradient(1200px 520px at 85% 10%, var(--accent-soft), transparent 60%), var(--bg); }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
                background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
                background-size: 56px 56px; mask-image: radial-gradient(900px 480px at 75% 30%, #000, transparent 75%);
                -webkit-mask-image: radial-gradient(900px 480px at 75% 30%, #000, transparent 75%); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.25fr); gap: 48px; align-items: center; }
.proven { position: relative; white-space: nowrap; }
.proven::after { content: ""; position: absolute; right: -.32em; bottom: .14em; width: .2em; height: .2em; background: var(--accent); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px 24px; list-style: none; padding: 0; margin: 36px 0 0; }
.chips li { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: .8rem; color: var(--ink-2); }
.chips li::before { content: ""; width: 8px; height: 8px; border: 1.5px solid var(--accent); }

.hero-visual { position: relative; padding: 20px 0 64px 28px; }
.frame { margin: 0; width: 118%; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.frame-bar { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--soft); }
.frame-bar span { width: 9px; height: 9px; background: var(--line-strong); }
.frame-bar em { margin-left: 10px; font-style: normal; font-family: var(--mono); font-size: .7rem; letter-spacing: .06em; color: var(--muted); }
.float { position: absolute; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.float-page { left: -6%; bottom: 0; width: 46%; margin: 0; }
.float-page figcaption { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-top: 1px solid var(--line);
                         font-family: var(--mono); font-size: .72rem; color: var(--accent); }
.float-finding { right: -4%; bottom: 22px; display: flex; gap: 12px; align-items: flex-start; max-width: 300px; padding: 14px 16px; font-size: .88rem; }
.float-finding .sq { margin-top: 6px; }
.float-finding strong { display: block; }
.float-finding span { color: var(--ink-2); }
.synthetic-note { position: relative; margin-top: 8px; font-family: var(--mono); font-size: .72rem; color: var(--muted); }

/* Sections */
section { position: relative; }
.problem, .how, .tour, .who, .faq { padding: 120px 0; }
.problem { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 56px; border-top: 1px solid var(--line-strong); }
.grid3 article { padding: 32px 32px 8px 0; }
.grid3 article + article { padding-left: 32px; border-left: 1px solid var(--line); }
.num { display: block; font-size: .8rem; color: var(--accent); margin-bottom: 18px; }
.grid3 p { color: var(--ink-2); margin: 10px 0 0; }

.steps { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; counter-reset: step; }
.steps li { position: relative; padding: 28px 24px 28px; border: 1px solid var(--line); background: var(--card); }
.steps li::after { content: ""; position: absolute; top: 46px; right: -25px; width: 26px; height: 1px; background: var(--line-strong); }
.steps li:last-child::after { display: none; }
.step-no { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; margin-bottom: 22px;
           background: var(--ink); color: #fff; font-size: .85rem; }
.steps li:nth-child(2) .step-no { background: var(--accent); }
.steps p { color: var(--ink-2); margin: 10px 0 0; font-size: .95rem; }

.how { padding-bottom: 40px; }
.tour { padding-top: 96px; padding-bottom: 80px; }
.feature { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.4fr); gap: 64px; align-items: center; margin-top: 96px; }
.feature.flip { grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr); }
.feature.flip .feature-copy { order: 2; }
.feature-copy p { color: var(--ink-2); margin: 14px 0 0; }
.feature-copy h3 { font-size: 1.6rem; letter-spacing: -0.025em; }
.feature-shot { margin: 0; border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--card); }
.feature-shot.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.feature-shot.pair img + img { border-left: 1px solid var(--line); }

.security { padding: 120px 0; background: var(--dark); color: var(--on-dark); }
.security .h2 { color: #fff; }
.security-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 72px; align-items: start; }
.diagram { width: 100%; max-width: 560px; margin-top: 48px; color: var(--on-dark); }
.d-box { fill: var(--dark-2); stroke: var(--dark-line); }
.d-box.strong { stroke: var(--accent-on-dark); }
.d-text { fill: var(--on-dark); font: 500 14px var(--sans); }
.d-text.b { font-weight: 600; letter-spacing: .12em; font-size: 13px; }
.d-small { fill: var(--on-dark-2); font: 400 12px var(--mono); }
.d-small.dim { fill: #5b6270; }
.d-label { fill: var(--on-dark-2); font: 500 11px var(--mono); letter-spacing: .1em; }
.d-line { stroke: var(--accent-on-dark); stroke-width: 1.5; fill: none; }
.d-cross { stroke: #f07c7f; stroke-width: 2; }
.sec-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--dark-line); }
.sec-list li { display: flex; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--dark-line); }
.sec-list .sq { margin-top: 8px; background: var(--accent-on-dark); }
.sec-list strong { color: #fff; font-weight: 600; }
.sec-list p { margin: 4px 0 0; color: var(--on-dark-2); font-size: .95rem; }

.who-grid, .faq-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.3fr); gap: 72px; align-items: start; }
.who-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.who-list li { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.who-list strong { font-weight: 600; }
.who-list span { color: var(--ink-2); }

.faq { background: var(--soft); border-top: 1px solid var(--line); }
.faq-list { border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 0; cursor: pointer;
               font-weight: 600; font-size: 1.05rem; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; width: 10px; height: 10px; flex: none; border: 1.5px solid var(--ink-2); transition: background .15s, border-color .15s; }
.faq details[open] summary::after { background: var(--accent); border-color: var(--accent); }
.faq details p { margin: 0 0 22px; color: var(--ink-2); max-width: 44em; }

.cta { padding: 104px 0; background: var(--dark); color: var(--on-dark);
       background-image: radial-gradient(800px 360px at 90% 0%, rgba(43, 85, 184, .35), transparent 60%); }
.cta .h2 { color: #fff; max-width: 18ch; }
.cta-grid { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 40px; }
.cta-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.cta-mail { color: var(--on-dark-2); text-decoration: none; font-size: .9rem; }
.cta-mail:hover { color: #fff; }

.foot { padding: 56px 0 48px; border-top: 1px solid var(--line); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 28px 48px; align-items: start; }
.foot-brand p { margin: 12px 0 0; color: var(--muted); font-size: .9rem; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.foot-links a { color: var(--ink-2); text-decoration: none; font-size: .9rem; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }
.foot-legal { grid-column: 1 / -1; margin: 12px 0 0; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }

/* Reveal on scroll (only when the script runs and motion is allowed). */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.in { opacity: 1; transform: none; }
.js .hero-visual .float { opacity: 0; transform: translateY(14px); transition: opacity .7s ease .5s, transform .7s cubic-bezier(.2, .7, .2, 1) .5s; }
.js .hero-visual.in .float { opacity: 1; transform: none; }
.js .hero-visual.in .float-finding { transition-delay: .9s; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .hero-visual .float { opacity: 1; transform: none; transition: none; }
}

/* 404 */
.notfound { padding-top: 140px; padding-bottom: 140px; }

/* Tablet */
@media (max-width: 1040px) {
  .hero-grid, .security-grid, .who-grid, .faq-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { padding-left: 0; max-width: 760px; }
  .frame { width: 100%; }
  .float-finding { right: 0; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li::after { display: none; }
  .feature, .feature.flip { grid-template-columns: 1fr; gap: 28px; margin-top: 72px; }
  .feature.flip .feature-copy { order: 0; }
  .nav-links { display: none; }
  .nav-row .button { margin-left: auto; }
}
/* Phone */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { padding-top: 40px; }
  .problem, .how, .tour, .who, .faq, .security { padding: 80px 0; }
  .grid3 { grid-template-columns: 1fr; }
  .grid3 article, .grid3 article + article { padding: 28px 0; border-left: 0; }
  .grid3 article + article { border-top: 1px solid var(--line); }
  .steps { grid-template-columns: 1fr; }
  .float-page { position: relative; left: auto; bottom: auto; width: 86%; margin: -40px 0 0 auto; }
  .float-finding { position: relative; right: auto; bottom: auto; margin-top: 12px; max-width: none; }
  .hero-visual { padding-bottom: 0; }
  .who-list li { grid-template-columns: 1fr; gap: 4px; }
  .foot-grid { grid-template-columns: 1fr; }
  .nav-row .button.small { padding: 0 12px; }
}