/* ============================================================
   Sera Ventures Corp. — site stylesheet
   Tokens ported verbatim from the design system (design_handoff_corporate_website).
   Strict monochrome. Radius 0 everywhere. No shadows. Depth = hairlines + inversion.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Base scale */
  --sv-black: #050506;
  --sv-ink: #0C0C0E;
  --sv-charcoal: #1A1A1D;
  --sv-graphite: #2B2B2F;
  --sv-steel: #6E6F76;
  --sv-silver: #A6A7AE;
  --sv-mist: #D9DADE;
  --sv-border: #E7E8EB;
  --sv-offwhite: #F6F6F7;
  --sv-white: #FFFFFF;

  /* Semantic — light context (default) */
  --surface-page: var(--sv-white);
  --surface-alt: var(--sv-offwhite);
  --surface-inverse: var(--sv-black);
  --text-primary: var(--sv-black);
  --text-secondary: var(--sv-steel);
  --text-tertiary: var(--sv-silver);
  --text-inverse: var(--sv-white);
  --text-inverse-muted: rgba(255, 255, 255, 0.56);
  --border-subtle: var(--sv-border);
  --border-strong: var(--sv-black);
  --border-inverse: var(--sv-graphite);

  /* Type */
  --font-display: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Geist', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Geist Mono', 'SF Mono', Consolas, monospace;

  /* Motion */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  font-family: var(--font-body);
  color: var(--text-primary);
}
[id] { scroll-margin-top: 96px; }
a { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--sv-black); color: var(--sv-white); }
.page-dark ::selection { background: var(--sv-white); color: var(--sv-black); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Shared: mono label utility ---------- */
.mono-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Header (sticky, home) ---------- */
.sv-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px 24px;
  flex-wrap: wrap;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 40px);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
/* Static header variant (legal pages) */
.sv-header--static {
  position: static;
  background: var(--sv-white);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
/* Dark header variant (error pages) */
.sv-header--dark {
  position: static;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid var(--border-inverse);
}

.wordmark {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
  text-decoration: none;
}
.wordmark__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--sv-black);
}
.wordmark__suffix {
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.46em;
  color: var(--text-secondary);
}
.wordmark--inverse .wordmark__name { color: var(--sv-white); }
.wordmark--inverse .wordmark__suffix { color: var(--text-inverse-muted); }

.sv-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 30px);
  flex-wrap: wrap;
  justify-content: flex-end;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.sv-nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 180ms;
}
.sv-nav__link:hover { color: var(--sv-black); }
.sv-nav__cta {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 16px;
  background: var(--sv-black);
  color: var(--sv-white);
  text-decoration: none;
  transition: background 180ms;
}
.sv-nav__cta:hover { background: var(--sv-charcoal); }

.header-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
}
.header-return {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 180ms;
}
.header-return:hover { color: var(--sv-black); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 0;
  cursor: pointer;
}
.btn--light {
  background: var(--sv-white);
  color: var(--sv-black);
  border: none;
  transition: background 180ms;
}
.btn--light:hover { background: var(--sv-offwhite); }
.btn--ghost-dark {
  gap: 10px;
  background: transparent;
  border: 1px solid var(--border-inverse);
  color: var(--sv-white);
  transition: border-color 180ms, background 180ms;
}
.btn--ghost-dark:hover { border-color: var(--sv-white); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--sv-black);
  padding: clamp(96px, 16vh, 168px) clamp(20px, 5vw, 40px) clamp(88px, 14vh, 140px);
}
.bg-grid {
  position: absolute;
  inset: -48px 0;
  background-image: linear-gradient(var(--sv-graphite) 1px, transparent 1px);
  background-size: 100% 48px;
  opacity: 0.28;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, transparent, #000 22%, #000 60%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 22%, #000 60%, transparent);
}
.bg-vline {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--sv-graphite);
  opacity: 0.4;
  pointer-events: none;
}
.hero__inner { position: relative; max-width: 1120px; margin: 0 auto; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
  margin-bottom: clamp(28px, 5vw, 44px);
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow__line {
  width: 28px;
  height: 1px;
  background: var(--sv-silver);
  display: inline-block;
  flex: none;
}
.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(40px, 7vw, 84px);
  letter-spacing: -0.025em;
  line-height: 1.02;
  color: var(--sv-white);
  max-width: 15ch;
}
.hero__sub {
  font-family: var(--font-body);
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.55;
  color: var(--text-inverse-muted);
  max-width: 56ch;
  margin: clamp(24px, 4vw, 36px) 0 clamp(36px, 5vw, 48px);
}
.hero__ctas { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section {
  padding: clamp(80px, 12vw, 128px) clamp(20px, 5vw, 40px);
}
.section--alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.section--alt-top {
  background: var(--surface-alt);
  border-top: 1px solid var(--border-subtle);
}
.section--dark { background: var(--sv-black); }
.section__inner { max-width: 1120px; margin: 0 auto; }

.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: clamp(40px, 6vw, 64px);
}
.section-label__text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
}
.section-label__rule { flex: 1; border-top: 1px solid var(--border-subtle); }
.section-label--inverse .section-label__text { color: var(--text-inverse-muted); }
.section-label--inverse .section-label__rule { border-top-color: var(--border-inverse); }

/* ---------- 01 Overview ---------- */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
}
.overview-grid h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--sv-black);
  max-width: 18ch;
}
.overview-copy { display: flex; flex-direction: column; gap: 22px; max-width: 52ch; }
.overview-copy p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ---------- 02 Areas of Operation ---------- */
.ops-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
}
.ops-cell {
  background: var(--sv-white);
  padding: clamp(28px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 210px;
  transition: background 200ms;
}
.ops-cell:hover { background: var(--sv-offwhite); }
.ops-cell__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-tertiary);
}
.ops-cell h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2vw, 23px);
  letter-spacing: -0.01em;
  color: var(--sv-black);
}
.ops-cell p {
  margin: auto 0 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.ops-disclaimer {
  margin: clamp(28px, 4vw, 40px) 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* ---------- 03 Operating Philosophy ---------- */
.phil-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(28px, 4vw, 48px);
}
.phil-item { border-top: 1px solid var(--sv-black); padding-top: 22px; }
.phil-item__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.phil-item__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2vw, 22px);
  letter-spacing: -0.01em;
  color: var(--sv-black);
  margin-bottom: 12px;
}
.phil-item p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ---------- 04 Corporate Information ---------- */
.corp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(32px, 4vw, 56px);
}
.corp-col { display: flex; flex-direction: column; gap: 14px; }
.corp-col__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
}
.corp-col__value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--sv-white);
}
.corp-col__detail {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-inverse-muted);
}
.corp-col address {
  font-style: normal;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--sv-white);
}
.corp-col__caption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--text-inverse-muted);
}

/* Phone blur-to-reveal */
.phone-reveal {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--sv-white);
}
.phone-reveal__decoy {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--sv-white);
  filter: blur(6px);
  user-select: none;
  -webkit-user-select: none;
}
.phone-reveal__pill {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sv-black);
  background: var(--sv-white);
  padding: 4px 8px;
  white-space: nowrap;
}
.phone-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--sv-white);
  text-decoration: none;
  transition: color 180ms;
}
.phone-link:hover { color: var(--sv-silver); }

/* ---------- 05 Corporate Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
}
.contact-intro { display: flex; flex-direction: column; gap: 24px; max-width: 44ch; }
.contact-intro h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 36px);
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--sv-black);
}
.contact-intro > p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.contact-channel {
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-channel__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.contact-channel p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.form-card {
  background: var(--sv-white);
  border: 1px solid var(--border-subtle);
  padding: clamp(24px, 3vw, 40px);
}
.contact-form { display: flex; flex-direction: column; gap: 22px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.field__label .req { color: var(--sv-black); }
.field input,
.field select {
  height: 46px;
  padding: 0 14px;
  background: var(--sv-white);
  border: 1px solid var(--border-subtle);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--sv-black);
  outline: none;
  transition: border-color 160ms;
}
.field textarea {
  padding: 12px 14px;
  background: var(--sv-white);
  border: 1px solid var(--border-subtle);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--sv-black);
  outline: none;
  resize: vertical;
  transition: border-color 160ms;
}
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--sv-black); }
.field input::placeholder,
.field textarea::placeholder { color: var(--text-tertiary); }
.field select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--sv-steel) 50%),
    linear-gradient(135deg, var(--sv-steel) 50%, transparent 50%);
  background-position: calc(100% - 18px) 20px, calc(100% - 12px) 20px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.turnstile-placeholder {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border-subtle);
  background: var(--sv-offwhite);
}
.turnstile-placeholder__box {
  width: 20px;
  height: 20px;
  border: 1px solid var(--sv-silver);
  display: inline-block;
  flex: none;
}
.turnstile-placeholder__text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.form-error {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--sv-black);
  border-left: 2px solid var(--sv-black);
  padding-left: 12px;
}
.form-submit {
  height: 52px;
  padding: 0 26px;
  background: var(--sv-black);
  color: var(--sv-white);
  border: none;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 180ms;
}
.form-submit:hover { background: var(--sv-charcoal); }
.form-fineprint {
  margin: 0;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-tertiary);
}

.form-confirm {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(16px, 3vw, 32px) 0;
}
.form-confirm__rule {
  width: 36px;
  height: 1px;
  background: var(--sv-black);
  display: inline-block;
}
.form-confirm h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.02em;
  color: var(--sv-black);
}
.form-confirm p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 40ch;
}
.form-confirm__again {
  align-self: flex-start;
  margin-top: 8px;
  height: 44px;
  padding: 0 22px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--sv-black);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 180ms, color 180ms;
}
.form-confirm__again:hover { background: var(--sv-black); color: var(--sv-white); }

/* ---------- Footer ---------- */
.sv-footer {
  background: var(--sv-black);
  border-top: 1px solid var(--border-inverse);
  padding: clamp(56px, 8vw, 80px) clamp(20px, 5vw, 40px) 40px;
}
.sv-footer__main {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.sv-footer__brand { max-width: 320px; }
.sv-footer__brand .wordmark__name { font-size: 16px; color: var(--sv-white); }
.sv-footer__brand .wordmark__suffix { font-size: 8px; color: var(--text-inverse-muted); }
.sv-footer__brand p {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-inverse-muted);
  margin: 20px 0 0;
}
.sv-footer__cols {
  display: flex;
  gap: clamp(40px, 6vw, 80px);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.sv-footer__col { display: flex; flex-direction: column; gap: 14px; }
.sv-footer__col-title { color: var(--sv-white); }
.sv-footer__link {
  color: var(--text-inverse-muted);
  text-decoration: none;
  transition: color 180ms;
}
.sv-footer__link:hover { color: var(--sv-white); }
.sv-footer__bottom {
  max-width: 1120px;
  margin: clamp(40px, 6vw, 56px) auto 0;
  border-top: 1px solid var(--border-inverse);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
}

/* Slim footer (legal pages) */
.sv-footer--slim { padding: clamp(48px, 7vw, 72px) clamp(20px, 5vw, 40px) 40px; }
.sv-footer--slim .sv-footer__bottom { margin-top: 0; border-top: none; padding-top: 0; }
.sv-footer__bottom-links { display: flex; gap: 24px; flex-wrap: wrap; }
.sv-footer__bottom-links a {
  color: var(--text-inverse-muted);
  text-decoration: none;
  transition: color 180ms;
}
.sv-footer__bottom-links a:hover { color: var(--sv-white); }

/* ---------- Legal pages ---------- */
.legal-main {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(64px, 10vw, 112px) clamp(20px, 5vw, 40px);
}
.legal-main__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.legal-main h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.02em;
  line-height: 1.06;
  color: var(--sv-black);
}
.legal-main__effective {
  margin: 0 0 48px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.legal-sections { display: flex; flex-direction: column; gap: 40px; }
.legal-sections h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--sv-black);
}
.legal-sections p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- Error pages (401 / 404) ---------- */
.err-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--sv-black);
}
.err-main {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: clamp(56px, 10vh, 120px) clamp(20px, 5vw, 40px);
}
.err-main .bg-grid {
  opacity: 0.22;
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 70%, transparent);
}
.err-main .bg-vline { opacity: 0.35; }
.err-scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  opacity: 0.5;
  pointer-events: none;
  animation: svScan 6s cubic-bezier(0.4, 0, 0.6, 1) infinite alternate;
}
.err-inner { position: relative; max-width: 1120px; margin: 0 auto; width: 100%; }
.err-inner .eyebrow { margin-bottom: clamp(20px, 4vw, 32px); }
.err-numeral {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(96px, 26vw, 320px);
  letter-spacing: -0.04em;
  line-height: 0.86;
  color: var(--sv-white);
}
.err-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  margin-top: clamp(32px, 5vw, 56px);
}
.err-copy { max-width: 34ch; }
.err-copy h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.2vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--sv-white);
}
.err-copy p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-inverse-muted);
}
.err-panel {
  border: 1px solid var(--border-inverse);
  background: rgba(255, 255, 255, 0.02);
  padding: clamp(18px, 2.5vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.err-panel__head {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.err-panel__row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sv-silver);
}
.err-panel__row .prompt { color: var(--text-inverse-muted); }
.err-panel__row--anim {
  animation: svRowIn 420ms cubic-bezier(0.2, 0, 0, 1) both;
}
.err-panel__row--redact { color: var(--text-inverse-muted); }
.err-panel__row--redact .index { color: var(--sv-silver); }
.redact-bar {
  flex: 1;
  height: 12px;
  background: var(--sv-graphite);
  transform-origin: left;
  animation: svRedact 500ms cubic-bezier(0.2, 0, 0, 1) both;
}
.redact-bar--short { flex: none; width: 62%; }
.err-panel__cursorline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sv-silver);
  margin-top: 2px;
}
.blink-cursor {
  width: 8px;
  height: 15px;
  background: var(--sv-silver);
  display: inline-block;
  animation: svBlink 1.1s step-end infinite;
}
.err-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: clamp(36px, 5vw, 52px);
}
.err-footer {
  border-top: 1px solid var(--border-inverse);
  padding: 24px clamp(20px, 5vw, 40px);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-inverse-muted);
}

/* Animation delays (stagger) */
.delay-1 { animation-delay: 120ms; }
.delay-2 { animation-delay: 260ms; }
.delay-3 { animation-delay: 400ms; }

/* ---------- Keyframes ---------- */
@keyframes svBlink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes svScan { 0% { transform: translateY(0); } 100% { transform: translateY(240px); } }
@keyframes svRowIn { 0% { opacity: 0; transform: translateY(8px); } 100% { opacity: 1; transform: none; } }
@keyframes svRedact { 0% { transform: scaleX(0); } 100% { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce) {
  .err-scan, .err-panel__row--anim, .redact-bar { animation: none !important; }
  .err-panel__row--anim { opacity: 1 !important; transform: none !important; }
  .redact-bar { transform: scaleX(1) !important; }
}

/* ---------- Utility ---------- */
[hidden] { display: none !important; }