/* Blue Cipher AI · bluecipherai.com
   Hand-authored build. Native CSS, no framework.
   System rules: buttons are full-pill, cards 12px, inputs 8px.
   One accent: blue. Locked for the whole site. */

:root {
  --ink: #0B0E13;
  --bg2: #0F141C;
  --paper: #F4F7FC;
  --paper-2: #E9EFF8;
  --blue: #2E7BFF;
  --blue-deep: #1E63E8;
  --blue-soft: #5D9BFF;
  --head-dark: #F4F7FC;
  --muted-dark: #FFFFFF;
  --head-light: #101828;
  --muted-light: #101828;
  --line-dark: rgba(150, 175, 210, 0.14);
  --line-light: rgba(16, 24, 40, 0.12);
  --sans: "Outfit", system-ui, -apple-system, sans-serif;
  --display: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
  color-scheme: dark;
}

@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-900.woff2") format("woff2");
  font-weight: 900;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("/fonts/space-grotesk-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 400;
  background: var(--ink);
  color: var(--head-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 44px);
}

/* ---------- type ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-soft);
  margin-bottom: 18px;
}
.hero .eyebrow {
  text-transform: uppercase;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  line-height: 1.3;
  letter-spacing: 0.04em;
  margin-bottom: 26px;
}
.on-light .eyebrow { color: var(--blue-deep); }

h1, h2, .hero .eyebrow, .foot-brand .brand {
  font-family: var(--display);
  font-weight: 700;
}
h1 {
  font-size: clamp(2.3rem, 4.9vw, 3.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

h2 {
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin-bottom: 18px;
}

h3 {
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--muted-dark);
  max-width: 60ch;
}
.on-light .lede { color: var(--muted-light); }

p { max-width: 62ch; }

.mono-line {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--muted-dark);
  letter-spacing: 0.06em;
}
.on-light .mono-line { color: var(--muted-light); }

/* ---------- time zone table ---------- */
.tz-table {
  margin-top: 20px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 10px;
  overflow: hidden;
  max-width: 640px;
}
.on-dark .tz-table { border-color: rgba(255,255,255,0.12); }
.tz-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.on-dark .tz-row { border-color: rgba(255,255,255,0.07); }
.tz-row:last-child { border-bottom: none; }
.tz-city {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--muted-light);
  white-space: nowrap;
}
.on-dark .tz-city { color: var(--muted-dark); }
.tz-time {
  font-size: 0.9rem;
  color: var(--ink);
  text-align: right;
  min-width: 0;
}
.on-dark .tz-time { color: #FFFFFF; }
.tz-you { background: rgba(46,123,255,0.06); font-weight: 600; }
.tz-note {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--muted-dark);
  margin-top: 16px;
  letter-spacing: 0.02em;
}
@media (max-width: 640px) {
  .tz-row { flex-direction: column; gap: 4px; }
  .tz-time { text-align: left; }
}

/* ---------- sections ---------- */

section { padding: clamp(72px, 9vw, 120px) 0; }

.on-dark { background: var(--ink); }
.on-dark-raised { background: var(--bg2); }
.on-light { background: var(--paper); color: var(--head-light); }
.on-light-2 { background: var(--paper-2); color: var(--head-light); }

.sec-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 56px); }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1rem;
  padding: 15px 30px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: #1F6FEB; color: #FFFFFF; }
.btn-primary:hover { background: #3E82EE; }
.on-light .btn-primary, .on-light-2 .btn-primary { background: #1D57C9; color: #FFFFFF; }
.on-light .btn-primary:hover, .on-light-2 .btn-primary:hover { background: #1D57E0; }

.btn-ghost {
  background: transparent;
  color: var(--head-dark);
  border-color: var(--line-dark);
}
.btn-ghost:hover { border-color: var(--blue-soft); color: var(--blue-soft); }
.on-light .btn-ghost, .on-light-2 .btn-ghost {
  color: var(--head-light);
  border-color: var(--line-light);
}
.on-light .btn-ghost:hover, .on-light-2 .btn-ghost:hover { border-color: var(--blue-deep); color: var(--blue-deep); }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(11, 14, 19, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-dark);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 44px);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-weight: 600; letter-spacing: 0.16em; font-size: 0.82rem; }
.brand .glyph {
  width: 12px; height: 12px;
  background: var(--blue);
  border-radius: 3px;
  transform: rotate(45deg);
  flex: none;
}
.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; max-width: 560px; column-gap: clamp(16px, 2.2vw, 28px); row-gap: 4px; list-style: none; }
.nav-links a { font-size: 0.92rem; color: var(--muted-dark); transition: color 0.2s ease; }
.nav-links a:hover { color: var(--head-dark); }
.nav-links .btn { padding: 10px 22px; font-size: 0.9rem; margin-top: 6px; }

/* what we believe + who we serve (homepage) */

.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(18px, 2.6vw, 30px); }
.principle { border: 1px solid var(--line-light); border-radius: 12px; padding: 26px 24px; background: #FFFFFF; }
.principle h3 { font-size: 1.05rem; margin-bottom: 8px; max-width: 30ch; }
.principle p { color: var(--muted-light); font-size: 0.97rem; max-width: none; margin-bottom: 0; }
.serve-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(18px, 2.6vw, 30px); }
.serve-card { border: 1px solid var(--line-dark); border-radius: 12px; padding: 26px 24px; background: var(--bg2); }
.serve-card h3 { font-family: var(--mono); font-size: 0.85rem; letter-spacing: 0.16em; margin-bottom: 10px; color: var(--blue-soft); }
.serve-card p { color: var(--muted-dark); font-size: 0.97rem; max-width: none; margin-bottom: 0; }
@media (max-width: 900px) { .principles, .serve-grid { grid-template-columns: 1fr; } }
.foot-disclosure { margin-top: 14px; font-size: 0.85rem; color: var(--muted-dark); line-height: 1.6; max-width: 70ch; }
.foot-disclosure a { color: var(--muted-dark); text-decoration: underline; }
.foot-disclosure a:hover { color: var(--head-dark); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  color: var(--head-dark);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 8px 12px;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: rgba(11, 14, 19, 0.97);
    border-bottom: 1px solid var(--line-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 22px clamp(20px, 4vw, 44px) 28px;
    gap: 18px;
  }
  .nav-links.open { display: flex; }
}

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

.hero { padding: clamp(140px, 18vh, 190px) 0 clamp(64px, 8vw, 100px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(44px, 6vw, 80px);
  align-items: center;
}
.hero h1 { margin-bottom: 4px; }
.hero .lede { margin-bottom: 30px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.tagline {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--blue-soft);
}

/* ---------- terminal card ---------- */

.term {
  background: #0A0D12;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(5, 8, 14, 0.5);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-dark);
}
.phone .term-bar .dot { background: #5A6B85; }
.term-tag {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.84rem;
  letter-spacing: 0.16em;
  color: var(--head-dark);
}
.term-body { padding: 24px 22px 26px; font-family: var(--mono); font-size: 0.95rem; }
.t-you { margin-bottom: 18px; color: #FFFFFF; }
.t-ask { margin-top: 14px; color: var(--head-dark); }
.t-who {
  display: inline-block;
  color: var(--blue-soft);
  margin-right: 10px;
  font-weight: 600;
}
.t-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.chip {
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.9rem;
  color: #FFFFFF;
}
.play {
  border: 1px solid rgba(46, 123, 255, 0.45);
  background: rgba(46, 123, 255, 0.08);
  border-radius: 8px;
  padding: 16px 16px 14px;
  margin-bottom: 18px;
}
.play-eyebrow {
  display: block;
  font-size: 0.84rem;
  letter-spacing: 0.16em;
  color: var(--blue-soft);
  margin-bottom: 8px;
}
.play p { color: var(--muted-dark); max-width: none; line-height: 1.55; }
.t-note { color: var(--muted-dark); font-size: 0.95rem; }

/* ---------- two owners ---------- */

.split-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 32px);
}
.owner-card {
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  padding: clamp(26px, 3vw, 38px);
  background: var(--bg2);
}
.owner-card h3 { font-size: 1.2rem; margin-bottom: 16px; }
.owner-card ul { list-style: none; }
.owner-card li {
  color: var(--muted-dark);
  padding: 9px 0 9px 26px;
  position: relative;
  border-top: 1px solid var(--line-dark);
  font-size: 0.98rem;
}
.owner-card.with-system li { color: var(--muted-dark); }
.owner-card li::before {
  content: "";
  position: absolute;
  left: 2px; top: 17px;
  width: 8px; height: 8px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: #2B3648;
}
.owner-card.with-system li::before { background: #9DC1F8; }
.close-q {
  margin-top: clamp(30px, 4vw, 44px);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
}

/* ---------- steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
  counter-reset: step;
}
.step {
  background: #fff;
  border: 1px solid var(--line-light);
  border-radius: 12px;
  padding: 26px 24px 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.step:hover { transform: translateY(-4px); border-color: var(--blue-deep); }
.step-n {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--blue-deep);
  font-size: 0.95rem;
  margin-bottom: 12px;
  display: block;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--muted-light); font-size: 1rem; max-width: none; }
.step .five {
  display: block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--blue-deep);
  letter-spacing: 0.08em;
}

/* ---------- plays ---------- */

.plays {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 2vw, 22px);
}
.play-card {
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  padding: 22px 20px;
  background: var(--bg2);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.play-card:hover { border-color: var(--blue); transform: translateY(-3px); }
.play-card h3 {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  color: var(--blue-soft);
  margin-bottom: 10px;
}
.play-card p { color: var(--muted-dark); font-size: 0.92rem; max-width: none; }
.plays-note { margin-top: 26px; }

/* ---------- rules ---------- */

.rules { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(16px, 2.4vw, 26px); }
.rule {
  border-top: 2px solid var(--blue-deep);
  background: #fff;
  border-radius: 0 0 12px 12px;
  padding: 24px 26px 22px;
  border-left: 1px solid var(--line-light);
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}
.rule h3 { margin-bottom: 8px; }
.rule p { color: var(--muted-light); font-size: 0.95rem; max-width: none; }

/* ---------- founder ---------- */

.founder { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(36px, 5vw, 72px); align-items: center; }
.founder-flip { grid-template-columns: 1.1fr 0.9fr; }
.founder-flip .founder-photo { order: 2; }
.founder-photo { border-radius: 12px; overflow: hidden; border: 1px solid var(--line-dark); max-width: 560px; margin: 0 auto; }
.founder-photo img { width: 100%; height: auto; object-fit: contain; object-position: center; }
.founder-body p { margin-bottom: 16px; color: var(--muted-dark); }
.founder-body p strong { color: var(--head-dark); font-weight: 700; }
.name-block { margin-top: 28px; border-top: 1px solid var(--line-dark); padding-top: 24px; }
.name-block h3 {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--blue-soft);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.name-block p { margin-bottom: 14px; }
.text-link {
  font-weight: 700;
  color: var(--blue-soft);
  border-bottom: 1px solid rgba(93, 155, 255, 0.4);
  transition: border-color 0.2s ease;
}
.text-link:hover { border-color: var(--blue-soft); }

/* ---------- quotes ---------- */

.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(18px, 2.6vw, 30px); }
.quote { background: #fff; border: 1px solid var(--line-light); border-radius: 12px; padding: 28px 26px; display: flex; flex-direction: column; }
.quote blockquote { font-size: 1.02rem; line-height: 1.55; color: var(--head-light); margin-bottom: 20px; }
.quote .who { margin-top: auto; }
.quote .who strong { display: block; font-size: 0.95rem; }
.quote .who span { font-size: 0.85rem; color: var(--muted-light); }

/* ---------- final cta ---------- */

.final { text-align: center; }
.final .lede { margin: 0 auto 30px; }
.final h2 { max-width: 16ch; margin-left: auto; margin-right: auto; }

/* use-case polish: numbers centered, last odd card spans full width */
.usecase-card .uc-num { text-align: center; }
.usecases .usecase-card:nth-child(odd):nth-last-child(1) { grid-column: 1 / -1; }

/* ---------- footer ---------- */

footer { border-top: 1px solid var(--line-dark); padding: 44px 0 36px; background: var(--ink); }
.foot-grid { display: flex; flex-wrap: wrap; gap: 30px; align-items: flex-start; justify-content: space-between; }
.foot-brand p { margin-top: 12px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 22px; list-style: none; }
.foot-links a { color: var(--muted-dark); font-size: 0.9rem; }
.foot-links a:hover { color: var(--head-dark); }
.foot-legal { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }

/* ---------- workshop page ---------- */

.wk-hero { padding: clamp(140px, 18vh, 190px) 0 clamp(64px, 8vw, 96px); }.wk-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(40px, 6vw, 76px); align-items: start; }
.form-card {
  background: var(--paper);
  border-radius: 12px;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line-dark);
  box-shadow: 0 30px 70px rgba(4, 7, 13, 0.55);
}
.form-card h3 { font-size: 1.15rem; margin-bottom: 6px; color: var(--head-light); }
.wk-hero .tz-table { margin-top: 24px; border-color: rgba(255,255,255,0.12); }
.wk-hero .tz-row { border-color: rgba(255,255,255,0.07); }
.wk-hero .tz-city { color: var(--muted-dark); }
.wk-hero .tz-time { color: #FFFFFF; }
.form-card .form-sub { font-size: 0.9rem; color: var(--muted-light); margin-bottom: 18px; }
.form-note { margin-top: 16px; font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.08em; color: var(--muted-light); }

/* SMS consent nudge: arrow + reminder, inside the embedded form */
.arrow-anim {
  display: inline-block;
  margin-left: 8px;
  font-size: 1.1em;
  line-height: 1;
  vertical-align: middle;
  color: #2E7BFF;
  animation: bca-arrow-bounce 1.1s ease-in-out infinite;
}
@keyframes bca-arrow-bounce {
  0%, 100% { transform: translateX(0); opacity: 0.55; }
  50% { transform: translateX(6px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .arrow-anim { animation: none; }
}
.bms-consent-note {
  margin: 10px 0 0;
  font-size: 0.95rem;
  color: #33445E;
  font-weight: 500;
}

.wk-body { max-width: 760px; }
.wk-body p { color: var(--muted-dark); margin-bottom: 16px; }
.on-light .wk-body p, .on-light-2 .wk-body p { color: var(--muted-light); }

.profiles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 8px; }
.profile {
  background: #fff;
  border: 1px solid var(--line-light);
  border-radius: 12px;
  padding: 20px 18px;
}
.profile h3 { font-family: var(--mono); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.05em; color: var(--blue-deep); margin-bottom: 10px; }
.profile p { font-size: 0.95rem; color: var(--muted-light); max-width: none; }

.run-steps { list-style: none; counter-reset: run; }
.run-steps li {
  counter-increment: run;
  position: relative;
  padding: 22px 0 22px 74px;
  border-top: 1px solid var(--line-dark);
}
.on-light .run-steps li, .on-light-2 .run-steps li { border-top-color: var(--line-light); }
.run-steps li::before {
  content: "0" counter(run);
  position: absolute;
  left: 0; top: 20px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1rem;
  color: var(--blue-soft);
}
.on-light .run-steps li::before, .on-light-2 .run-steps li::before { color: var(--blue-deep); }
.run-steps h3 { margin-bottom: 6px; }
.run-steps p { color: var(--muted-dark); margin-bottom: 0; font-size: 0.96rem; }
.on-light .run-steps p, .on-light-2 .run-steps p { color: var(--muted-light); }

.check-list { list-style: none; }
.check-list li {
  padding: 13px 0 13px 34px;
  position: relative;
  border-top: 1px solid var(--line-dark);
  color: var(--muted-dark);
}
.on-light .check-list li { border-top-color: var(--line-light); color: var(--muted-light); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 2px; top: 19px;
  width: 9px; height: 9px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: #9DC1F8;
}

.faq { max-width: 760px; }
.faq details { border-top: 1px solid var(--line-dark); }
.faq details:last-child { border-bottom: 1px solid var(--line-dark); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 40px 22px 0;
  position: relative;
  font-weight: 700;
  font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  color: #FFFFFF;
  font-size: 1.3rem;
  font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 40px 24px 0; color: var(--muted-dark); font-size: 0.97rem; }

/* ---------- about page ---------- */

.about-hero { padding: clamp(140px, 18vh, 190px) 0 clamp(60px, 8vw, 96px); }
.about-hero h1 { max-width: 20ch; margin-bottom: 22px; }
.story { max-width: 680px; }
.story p { margin-bottom: 18px; font-size: 1.04rem; }
.story .drop {
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--head-dark);
  letter-spacing: -0.01em;
}
.bg-list { list-style: none; margin-top: 22px; }
.bg-list li {
  padding: 11px 0 11px 30px;
  position: relative;
  border-top: 1px solid var(--line-dark);
  color: #FFFFFF;
  font-size: 0.96rem;
}
.bg-list li::before { background: #9DC1F8; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.4vw, 26px); }
.principle { border-top: 2px solid var(--blue); padding-top: 20px; }
.principle h3 { margin-bottom: 10px; font-size: 1.05rem; }
.principle p { color: var(--muted-light); font-size: 1.03rem; max-width: none; }

/* ---------- reveal ---------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .step:hover, .play-card:hover { transform: none; }
}

/* ---------- theme toggle + light mode ---------- */

:root[data-theme="light"] {
  --ink: #F4F7FC;
  --bg2: #FFFFFF;
  --paper: #FFFFFF;
  --paper-2: #E9EFF8;
  --head-dark: #101828;
  --muted-dark: #101828;
  --head-light: #101828;
  --muted-light: #101828;
  --line-dark: rgba(16, 24, 40, 0.12);
  --line-light: rgba(16, 24, 40, 0.12);
  --blue-soft: #1E63E8;
  color-scheme: light;
}
:root[data-theme="light"] .on-dark-raised { background: #EDF2F9; }
:root[data-theme="light"] .nav { background: rgba(244, 247, 252, 0.85); }
:root[data-theme="light"] .term { background: #FFFFFF; box-shadow: 0 30px 60px rgba(16, 24, 40, 0.10); }
:root[data-theme="light"] .term-bar .dot { background: #C7D3E3; }
:root[data-theme="light"] .t-you { color: #2A3A55; }
:root[data-theme="light"] .play p { color: #1D2B44; }
:root[data-theme="light"] .t-ask { color: #1D2B44; }
:root[data-theme="light"] .owner-card li::before { background: #1E63E8; }
:root[data-theme="light"] .phone .term-bar .dot { background: #232B3A; }
:root[data-theme="light"] .form-card { box-shadow: 0 30px 70px rgba(16, 24, 40, 0.10); }
:root[data-theme="light"] footer { background: transparent; }
:root[data-theme="light"] .rule { border-top-color: var(--blue-deep); }
:root[data-theme="light"] .principle p { color: #101828; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--muted-dark);
  cursor: pointer;
  flex: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.theme-toggle svg { width: 16px; height: 16px; display: block; }
.theme-toggle .i-moon { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-moon { display: block; }
.theme-toggle:hover { border-color: var(--blue-soft); color: var(--blue-soft); }

@media (max-width: 860px) {
  :root[data-theme="light"] .nav-links { background: rgba(255, 255, 255, 0.97); }
  .nav-links .theme-li { align-self: flex-end; }
}

/* ---------- inner pages ---------- */

.page-hero { padding: clamp(64px, 8vw, 104px) 0 clamp(24px, 3vw, 40px); }
.page-hero h1 { font-size: clamp(2.05rem, 4.6vw, 3.2rem); letter-spacing: -0.02em; max-width: 22ch; }

/* demo */
.demo-stage { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 34px); align-items: start; }
.chat-panel { border: 1px solid var(--line-dark); border-radius: 12px; background: var(--bg2); padding: clamp(20px, 3vw, 30px); }
.on-light .chat-panel, .on-light-2 .chat-panel { border-color: var(--line-light); background: #FFFFFF; }
.chat-log { list-style: none; display: flex; flex-direction: column; gap: 14px; margin: 18px 0 20px; }
.chat-line { display: flex; gap: 12px; align-items: flex-start; }
.chat-who { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line-dark); flex: none; margin-top: 2px; }
.on-light .chat-who, .on-light-2 .chat-who { border-color: var(--line-light); }
.chat-who.you { color: var(--blue-soft); }
.on-light .chat-who.you, .on-light-2 .chat-who.you { color: var(--blue-deep); }
.chat-who.bca { color: var(--head-light); }
.chat-line p { margin: 0; color: var(--muted-light); font-size: 0.98rem; max-width: none; line-height: 1.55; }
.chat-anim .chat-line { opacity: 0; transform: translateY(10px); animation: chatIn 0.5s ease forwards; }
.chat-anim .chat-line:nth-child(1) { animation-delay: 0.2s; }
.chat-anim .chat-line:nth-child(2) { animation-delay: 0.75s; }
.chat-anim .chat-line:nth-child(3) { animation-delay: 1.3s; }
.chat-anim .chat-line:nth-child(4) { animation-delay: 1.85s; }
.chat-anim .chat-line:nth-child(5) { animation-delay: 2.4s; }
@keyframes chatIn { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .chat-anim .chat-line { animation: none; opacity: 1; transform: none; } }
.demo-form-card { border: 1px solid var(--line-dark); border-radius: 12px; background: var(--bg2); padding: clamp(22px, 3vw, 32px); }
.on-light .demo-form-card, .on-light-2 .demo-form-card { border-color: var(--line-light); background: #FFFFFF; }
.demo-form-card h3, .chat-panel h3 { font-size: 1.15rem; margin-bottom: 6px; }
.form-sub { color: var(--muted-light); font-size: 0.95rem; margin-bottom: 14px; }
.pain-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 8px; }
.pain-item { border: 1px solid var(--line-dark); border-radius: 12px; padding: 18px 20px; background: var(--bg2); }
.on-light .pain-item, .on-light-2 .pain-item { border-color: var(--line-light); background: #FFFFFF; }
.pain-item h3 { font-size: 1.02rem; margin-bottom: 8px; }
.pain-item p { color: var(--muted-dark); font-size: 0.95rem; max-width: none; margin-bottom: 0; }

/* blog */
.post-list { display: grid; grid-template-columns: 1fr; gap: 20px; max-width: 760px; }
.post-row { border: 1px solid var(--line-dark); border-radius: 12px; padding: 24px 26px; background: var(--bg2); }
.on-light .post-row, .on-light-2 .post-row { border-color: var(--line-light); background: #FFFFFF; }
.post-row .mono-line { font-size: 0.78rem; }
.post-row h2 { font-size: 1.4rem; margin: 8px 0 10px; }
.post-row p { color: var(--muted-light); margin-bottom: 12px; }

/* legal */
.legal-body { max-width: 76ch; }
.legal-body h2 { font-size: 1.2rem; margin: 32px 0 10px; }
.legal-body h3 { font-size: 1.02rem; margin: 20px 0 6px; }
.legal-body p, .legal-body li { color: var(--muted-light); font-size: 0.98rem; line-height: 1.65; }
.legal-body ul { padding-left: 22px; margin: 10px 0; }
.legal-hub-list { display: grid; grid-template-columns: 1fr; max-width: 720px; }
.legal-hub-list a { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; padding: 16px 4px; border-top: 1px solid var(--line-dark); color: var(--head-light); text-decoration: none; font-weight: 600; }
.on-light .legal-hub-list a, .on-light-2 .legal-hub-list a { border-top-color: var(--line-light); }
.legal-hub-list a:hover { color: var(--blue-soft); }
.on-light .legal-hub-list a:hover, .on-light-2 .legal-hub-list a:hover { color: var(--blue-deep); }
.legal-hub-list span { font-weight: 400; color: var(--muted-light); font-size: 0.92rem; text-align: right; }

/* footer legal links + booking mount */
.foot-legal a { color: var(--muted-dark); }
.foot-legal a:hover { color: var(--head-dark); }
.booking-mount { min-height: 320px; }
.bk-hint { font-size: 0.85rem; }
@media (max-width: 900px) { .demo-stage, .pain-list { grid-template-columns: 1fr; } }

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .plays { grid-template-columns: repeat(2, 1fr); }
  .profiles { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .hero-grid, .wk-grid { grid-template-columns: 1fr; }
  .founder { grid-template-columns: 1fr; }
  .founder-photo { max-width: 440px; }
  .founder-flip .founder-photo { order: -1; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split-cards { grid-template-columns: 1fr; }
  .rules { grid-template-columns: 1fr; }
  .quotes { grid-template-columns: 1fr; max-width: 560px; }
  .principles { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .steps { grid-template-columns: 1fr; }
  .plays { grid-template-columns: 1fr; }
  .profiles { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; text-align: center; }
}

/* ---------- brand logo ---------- */

.brand-logo { width: 26px; height: 26px; border-radius: 7px; flex: none; display: block; }
.foot-logo { width: 34px; height: 34px; }
.foot-brand .brand { font-size: 0.95rem; }

/* ---------- footer (MS360-style 3-column) ---------- */

.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: clamp(28px, 4vw, 60px); align-items: start; }
.foot-tagline { margin-top: 14px; font-size: 0.95rem; color: var(--muted-dark); max-width: 34ch; line-height: 1.6; }
.foot-title { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-dark); margin-bottom: 14px; }
.foot-links { display: flex; flex-direction: column; flex-wrap: nowrap; gap: 12px; list-style: none; }
.foot-links a { font-size: 0.95rem; }
.foot-note { margin-top: 16px; font-size: 0.85rem; color: var(--muted-dark); max-width: 30ch; line-height: 1.55; }
.foot-legal { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line-dark); }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; gap: 30px; } }

/* ---------- iPhone-style frame (homepage hero) ---------- */

.phone { width: min(380px, 100%); margin: 0 auto; }
.phone-frame { position: relative; background: #05070B; border: 1px solid rgba(150, 175, 210, 0.28); border-radius: 54px; padding: 12px; box-shadow: 0 40px 80px rgba(5, 8, 14, 0.55); }
.phone-island { position: absolute; top: 24px; left: 50%; transform: translateX(-50%); width: 92px; height: 26px; background: #05070B; border: 1px solid rgba(255, 255, 255, 0.07); border-radius: 999px; z-index: 5; }
.phone-screen { border-radius: 42px; overflow: hidden; background: #0A0D12; }
.phone .term { border: none; border-radius: 0; box-shadow: none; background: #0A0D12; }
.phone-status { display: flex; justify-content: space-between; align-items: center; padding: 18px 26px 4px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; color: #E7EDF6; }
:root[data-theme="light"] .phone .term { background: #0A0D12; }
:root[data-theme="light"] .phone .t-you { color: #FFFFFF; }
:root[data-theme="light"] .phone .t-ask { color: #F4F7FC; }
:root[data-theme="light"] .phone .play p { color: #FFFFFF; }
:root[data-theme="light"] .phone .t-note { color: #FFFFFF; }
:root[data-theme="light"] .phone .chip { color: #FFFFFF; border-color: rgba(255, 255, 255, 0.14); }
:root[data-theme="light"] .phone .t-who, :root[data-theme="light"] .phone .play-eyebrow { color: #5D9BFF; }
:root[data-theme="light"] .phone .term-tag { color: #F4F7FC; }
:root[data-theme="light"] .phone .term-bar { border-color: rgba(255, 255, 255, 0.08); }

/* ---------- remaining theme-flip repairs ---------- */

.on-light .t-note, .on-light-2 .t-note { color: var(--muted-light); }
:root[data-theme="light"] .chip { color: #2A3A55; }
:root[data-theme="light"] .bg-list li { color: #101828; }
:root[data-theme="light"] .faq summary::after { color: #33445E; }

/* ---------- AI Verified Facts ---------- */

.facts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(18px, 2.6vw, 30px); }
.fact-card { background: #fff; border: 1px solid var(--line-light); border-radius: 12px; padding: 28px 26px; display: flex; flex-direction: column; }
.fact-card h3 { font-family: var(--display); font-size: 2.2rem; line-height: 1.08; margin-bottom: 10px; color: var(--blue-deep); }
.fact-card h4 { font-size: 1.08rem; margin-bottom: 10px; }
.fact-card p { color: var(--muted-light); font-size: 1rem; max-width: none; margin-bottom: 10px; }
.fact-card .cite { margin-top: auto; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--muted-light); }
.fact-card .cite a { color: var(--blue-deep); text-decoration: underline; }
.facts-note { margin-top: 26px; font-size: 1rem; color: var(--muted-light); max-width: none; }

/* ---------- best use cases ---------- */

.usecases { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(18px, 2.6vw, 30px); }
.usecase-card { background: #fff; border: 1px solid var(--line-light); border-radius: 12px; padding: 28px 26px; display: flex; flex-direction: column; }
.usecase-card h3 { font-size: 1.15rem; margin-bottom: 12px; }
.usecase-card .uc-num { font-family: var(--mono); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em; color: var(--blue-deep); display: block; margin-bottom: 8px; }
.usecase-card p { color: var(--muted-light); font-size: 1rem; max-width: none; margin-bottom: 10px; }
.usecase-card .uc-cite { margin-top: auto; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--muted-light); }
.usecase-card .uc-cite a { color: var(--blue-deep); text-decoration: underline; }

/* ---------- long article ---------- */

.article-wrap { max-width: 760px; margin: 0 auto; }
.article-body p { max-width: none; font-size: 1.06rem; line-height: 1.75; margin-bottom: 18px; }
.article-body h2 { font-size: clamp(1.4rem, 2.4vw, 1.8rem); margin: 40px 0 14px; }
.article-body h3 { font-size: 1.2rem; margin: 34px 0 12px; }
.article-body blockquote { border-left: 3px solid var(--blue-deep); padding: 4px 20px; margin: 24px 0; font-size: 1.1rem; line-height: 1.7; }
.fact-block { background: rgba(46,123,255,0.07); border: 1px solid rgba(46,123,255,0.18); border-radius: 12px; padding: 20px 22px; margin: 24px 0; }
.fact-block p { font-size: 0.98rem; margin-bottom: 8px; }
.fact-block .cite { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--muted-light); }
.fact-block .cite a { color: var(--blue-deep); text-decoration: underline; }
.article-meta { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--muted-light); margin-bottom: 22px; }
.back-line { margin-top: 40px; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--muted-light); }

/* ---------- about story art ---------- */

.story-art { max-width: 680px; margin: 30px 0; }
.story-art img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line-light); }
.story-art figcaption { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--muted-light); margin-top: 12px; }

/* ---------- about page: story text left, cipher art right ---------- */

.about-art-grid { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: clamp(24px, 4vw, 48px); align-items: start; }
.about-art-grid .story { max-width: none; }
.about-art { position: sticky; top: 110px; }
.side-art { margin: 0; max-width: 420px; }
@media (max-width: 900px) { .about-art-grid { grid-template-columns: 1fr; } .about-art { position: static; } .side-art { max-width: 560px; margin: 30px 0; } }

@media (max-width: 900px) { .facts-grid, .usecases { grid-template-columns: 1fr; } }

/* fact blocks on dark sections */
.on-dark .fact-block .cite, .on-dark-raised .fact-block .cite { color: var(--muted-dark); }
.on-dark .fact-block .cite a, .on-dark-raised .fact-block .cite a { color: var(--blue-soft); }
.on-dark .fact-block, .on-dark-raised .fact-block { background: rgba(46,123,255,0.10); border-color: rgba(150,175,210,0.18); }