/* ============================================================
   Encrypted Backup & Sync
   A benefit-led light/dark story: readable devices at the edges,
   a deliberately blind mailbox in the middle, and recovery owned
   by the person keeping the diary.
   ============================================================ */

:root {
  --backup-light: #f8f8fb;
  --backup-light-raised: #ffffff;
  --backup-light-soft: #eef1f7;
  --backup-light-ink: #101b32;
  --backup-light-muted: #566178;
  --backup-night: #071326;
  --backup-night-raised: #0e203b;
  --backup-night-soft: #152a49;
  --backup-night-ink: #f7f9ff;
  --backup-night-muted: #b7c3d8;
  --backup-blue: #4f91ff;
  --backup-blue-dark: #246ddf;
  --backup-blue-soft: #dce9ff;
  --backup-gold: #e6a43e;
  --backup-gold-soft: #ffe5b8;
  --backup-green: #45b985;
  --backup-red: #c94d4d;
  --backup-rule-light: rgba(16, 27, 50, 0.12);
  --backup-rule-dark: rgba(226, 235, 255, 0.18);
  --backup-space-xs: 8px;
  --backup-space-sm: 12px;
  --backup-space-md: 16px;
  --backup-space-lg: 24px;
  --backup-space-xl: 32px;
  --backup-space-2xl: 48px;
  --backup-space-3xl: 64px;
  --backup-space-4xl: 96px;
}

html { scroll-padding-top: 84px; }

body.backup-page {
  color: var(--home-ink);
  background: var(--home-bg);
  font-size: 17px;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.backup-page p,
.backup-page li,
.backup-page dd,
.backup-page figcaption { text-wrap: pretty; }

.backup-page h1,
.backup-page h2,
.backup-page h3 {
  margin: 0;
  color: inherit;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.backup-page h1 {
  font-size: clamp(3rem, 5vw, 4.1rem);
  font-weight: 620;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.backup-page h1 > span { display: block; }

.backup-page h2 {
  font-size: clamp(2.15rem, 4.5vw, 4rem);
  font-weight: 620;
  line-height: 1.04;
}

.backup-page h3 {
  font-size: 1.18rem;
  font-weight: 650;
  line-height: 1.2;
}

.backup-page ::selection {
  color: var(--backup-light-ink);
  background: var(--backup-blue-soft);
}

.backup-page a,
.backup-page button,
.backup-page summary { -webkit-tap-highlight-color: transparent; }

.backup-section-label {
  margin: 0 0 18px;
  color: inherit;
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  opacity: 0.7;
  text-transform: uppercase;
}

.backup-section-heading {
  max-width: 790px;
  margin-bottom: clamp(48px, 6vw, 72px);
}

.backup-section-heading > p:last-child {
  max-width: 660px;
  margin: 24px 0 0;
  color: var(--home-muted);
  font-size: 1.08rem;
}

.backup-page a:focus-visible,
.backup-page button:focus-visible,
.backup-page summary:focus-visible,
.backup-page video:focus-visible {
  outline: 3px solid var(--home-blue);
  outline-offset: 4px;
}

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

.backup-page .home-header {
  background: rgba(248, 248, 251, 0.92);
}

.backup-page .home-header[data-scrolled="true"] {
  background: rgba(248, 248, 251, 0.98);
}

.backup-page .home-brand,
.backup-page .home-nav a,
.backup-page .menu-toggle { color: var(--backup-light-ink); }

.backup-page .home-nav a { min-height: 44px; }

.backup-page .home-brand { min-height: 44px; }

.backup-page .home-nav a:hover,
.backup-page .home-nav a:focus-visible {
  color: var(--backup-light-ink);
  background: rgba(16, 27, 50, 0.06);
}

/* ---------- Buttons ---------- */

.backup-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 0 22px;
  font-family: var(--display);
  font-size: 0.92rem;
  font-weight: 650;
  text-align: center;
  text-decoration: none;
  transition:
    color 180ms ease-out,
    background-color 180ms ease-out,
    transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.backup-button svg,
.backup-text-link svg {
  width: 19px;
  height: 19px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.backup-button-primary {
  color: #fff;
  background: var(--backup-light-ink);
  box-shadow: 0 5px 8px -6px rgba(16, 27, 50, 0.52);
}

.backup-button-primary:hover {
  color: #fff;
  background: #202f4e;
  transform: translateY(-1px);
}

.backup-button-primary svg {
  fill: currentColor;
  stroke: none;
}

.backup-button-quiet {
  color: var(--backup-light-ink);
  background: transparent;
}

.backup-button-quiet:hover { background: rgba(16, 27, 50, 0.06); }
.backup-button:hover svg,
.backup-text-link:hover svg { transform: translateX(2px); }
.backup-button:active { transform: scale(0.97); }

/* ---------- Hero ---------- */

.backup-hero {
  position: relative;
  overflow: clip;
  color: var(--backup-light-ink);
  background:
    linear-gradient(
      90deg,
      var(--backup-light) 0%,
      var(--backup-light) 45%,
      var(--backup-night) 45%,
      var(--backup-night) 100%
    );
}

.backup-hero-layout {
  width: min(1320px, calc(100% - 64px));
  min-height: min(780px, calc(100svh - 72px));
  display: grid;
  grid-template-columns: minmax(500px, 0.9fr) minmax(610px, 1.1fr);
  align-items: center;
  gap: clamp(36px, 5vw, 76px);
}

.backup-hero-copy {
  position: relative;
  z-index: 2;
  padding: clamp(68px, 7vw, 92px) 0;
}

.backup-kicker {
  --record-note-accent: var(--backup-green);
  --record-note-ink: var(--backup-light-muted);
  margin: 0 0 24px;
}

.backup-hero-copy h1 { max-width: 8.6em; }

.backup-hero-promise {
  margin: 28px 0 10px;
  color: var(--backup-light-ink);
  font-size: clamp(1.15rem, 2vw, 1.42rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.backup-hero-lede {
  max-width: 590px;
  margin: 0;
  color: var(--backup-light-muted);
  font-size: clamp(1.02rem, 1.45vw, 1.16rem);
  line-height: 1.65;
}

.backup-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.backup-hero-assurances {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 42px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--backup-rule-light);
  list-style: none;
}

.backup-hero-assurances li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  min-width: 0;
  color: var(--backup-light-muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

.backup-hero-assurances svg {
  width: 23px;
  height: 23px;
  flex: none;
  fill: none;
  stroke: var(--backup-blue-dark);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-hero-assurances strong {
  display: block;
  margin-bottom: 2px;
  color: var(--backup-light-ink);
  font-size: 0.75rem;
}

.backup-hero-visual {
  position: relative;
  min-width: 0;
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(140px, 0.62fr) minmax(118px, 0.46fr) minmax(320px, 1.42fr);
  align-items: center;
  gap: clamp(15px, 2vw, 28px);
  color: var(--backup-night-ink);
}

.backup-hero-visual::before,
.backup-hero-visual::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.backup-hero-visual::before {
  inset: 10% -18% 8% 18%;
  background: radial-gradient(circle at center, rgba(79, 145, 255, 0.2), transparent 66%);
  filter: blur(10px);
}

.backup-hero-visual::after {
  top: 50%;
  left: 21%;
  right: 29%;
  border-top: 2px dotted var(--backup-blue);
  opacity: 0.9;
}

.backup-device {
  position: relative;
  z-index: 1;
  margin: 0;
  overflow: hidden;
  background: #090d16;
  box-shadow: 0 28px 36px -24px rgba(0, 0, 0, 0.86);
}

.backup-device img {
  width: 100%;
  height: auto;
  display: block;
}

.backup-device-phone {
  border: 7px solid #090d16;
  border-radius: 30px;
}

.backup-device-phone img { border-radius: 21px; }

.backup-device-tablet {
  border: 8px solid #090d16;
  border-radius: 24px;
}

.backup-device-tablet img { border-radius: 15px; }

.backup-mailbox {
  position: relative;
  z-index: 2;
  align-self: center;
  min-width: 0;
  padding-top: 38px;
  text-align: center;
}

.backup-mailbox::before,
.backup-mailbox::after {
  content: "";
  position: absolute;
  top: 48%;
  width: 13px;
  height: 13px;
  border-top: 2px solid var(--backup-blue);
  border-right: 2px solid var(--backup-blue);
}

.backup-mailbox::before {
  left: -21px;
  transform: rotate(45deg);
}

.backup-mailbox::after {
  right: -21px;
  transform: rotate(45deg);
}

.backup-mailbox svg {
  width: min(112px, 100%);
  height: auto;
  margin: 0 auto 20px;
  fill: none;
  stroke: #b9c7dc;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-mailbox .backup-mailbox-lock { stroke: var(--backup-blue); }

.backup-mailbox p {
  width: 150px;
  max-width: 135%;
  margin: 0 50% 0;
  transform: translateX(-50%);
}

.backup-mailbox strong {
  display: block;
  margin-bottom: 5px;
  color: var(--backup-night-ink);
  font-size: 0.85rem;
}

.backup-mailbox span {
  display: block;
  color: var(--backup-night-muted);
  font-size: 0.7rem;
  line-height: 1.45;
}

/* ---------- Film ---------- */

.backup-film-section {
  color: var(--backup-night-ink);
  background:
    radial-gradient(120% 150% at 85% 0%, rgba(79, 145, 255, 0.16), transparent 48%),
    var(--backup-night-raised);
  padding: clamp(78px, 10vw, 132px) 0;
}

.backup-film-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  align-items: end;
  gap: clamp(36px, 7vw, 96px);
  margin-bottom: clamp(36px, 5vw, 58px);
}

.backup-film-heading h2 { max-width: 11em; }

.backup-film-heading > p {
  max-width: 440px;
  margin: 0 0 5px;
  color: var(--backup-night-muted);
}

.backup-video-frame {
  overflow: hidden;
  background: #030811;
  border-radius: 14px;
  box-shadow: 0 28px 50px -32px rgba(0, 0, 0, 0.92);
}

.backup-video-frame video {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  background: #030811;
  object-fit: contain;
}

.backup-film-support {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
  padding-top: 20px;
}

.backup-film-support > p {
  margin: 0;
  color: var(--backup-night-muted);
  font-size: 0.82rem;
}

.backup-transcript {
  border-top: 1px solid var(--backup-rule-dark);
}

.backup-transcript summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--backup-night-ink);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 650;
  list-style: none;
}

.backup-transcript summary::-webkit-details-marker { display: none; }
.backup-transcript summary::after { content: "+"; color: var(--backup-blue); font-size: 1.3rem; }
.backup-transcript[open] summary::after { content: "−"; }

.backup-transcript div {
  padding: 8px 0 12px;
  color: var(--backup-night-muted);
  font-size: 0.9rem;
}

.backup-transcript p { max-width: 72ch; }

/* ---------- Data path ---------- */

.backup-path-section {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--home-bg);
}

.backup-flow-figure { margin: 0; }

.backup-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 5vw, 72px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.backup-flow::before {
  content: "";
  position: absolute;
  top: 46px;
  left: 16%;
  right: 16%;
  border-top: 2px dotted color-mix(in srgb, var(--home-blue) 72%, var(--home-line));
}

.backup-flow li {
  position: relative;
  z-index: 1;
  padding: 0 clamp(4px, 1vw, 12px);
}

.backup-flow-icon {
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  margin-bottom: 26px;
  color: var(--home-ink);
  background: var(--home-surface);
  border-radius: 14px;
  box-shadow: var(--home-shadow-ring);
}

.backup-flow-icon svg {
  width: 58px;
  height: 58px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-flow-icon .backup-flow-accent {
  stroke: var(--home-blue);
  stroke-width: 2.2;
}

.backup-flow-server .backup-flow-icon {
  color: #d7e3f6;
  background: var(--backup-night);
  box-shadow: none;
}

.backup-flow li > p:nth-of-type(1) {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin: 0 0 10px;
}

.backup-flow li > p:nth-of-type(1) span {
  color: var(--home-blue);
  font-size: 0.74rem;
  font-weight: 750;
}

.backup-flow li > p:nth-of-type(1) strong {
  color: var(--home-ink);
  font-size: 1.05rem;
}

.backup-flow li > p:last-child {
  margin: 0;
  color: var(--home-muted);
  font-size: 0.92rem;
}

.backup-flow-figure figcaption {
  max-width: 760px;
  margin: 42px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--home-line);
  color: var(--home-muted);
  font-size: 0.82rem;
}

.backup-local-note {
  max-width: 820px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-top: 46px;
  padding: 22px 24px;
  color: var(--home-ink);
  background: var(--home-surface-subtle);
  border-radius: 12px;
}

.backup-local-note svg {
  width: 28px;
  height: 28px;
  flex: none;
  fill: none;
  stroke: var(--home-blue);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-local-note p { margin: 0; font-size: 0.92rem; }

/* ---------- Recovery ---------- */

.backup-recovery-section {
  color: var(--backup-night-ink);
  background:
    radial-gradient(70% 150% at 100% 35%, rgba(79, 145, 255, 0.15), transparent 60%),
    var(--backup-night);
  padding: clamp(88px, 11vw, 148px) 0;
}

.backup-recovery-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.74fr) minmax(0, 1.26fr);
  gap: clamp(52px, 8vw, 120px);
  align-items: start;
}

.backup-recovery-copy {
  position: sticky;
  top: 120px;
}

.backup-recovery-copy > p:not(.backup-section-label):not(.backup-recovery-warning) {
  max-width: 430px;
  margin: 24px 0 0;
  color: var(--backup-night-muted);
}

.backup-recovery-warning {
  max-width: 430px;
  margin: 34px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--backup-rule-dark);
  color: var(--backup-gold-soft);
  font-size: 0.9rem;
}

.backup-recovery-paths {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.backup-recovery-paths::before {
  content: "";
  position: absolute;
  top: 58px;
  bottom: 58px;
  left: 43px;
  border-left: 2px dotted rgba(79, 145, 255, 0.7);
}

.backup-recovery-paths li {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding-bottom: 52px;
}

.backup-recovery-paths li:last-child { padding-bottom: 0; }

.backup-recovery-symbol {
  width: 88px;
  height: 88px;
  display: grid;
  place-items: center;
  color: #cddaf0;
  background: var(--backup-night);
}

.backup-recovery-symbol svg {
  width: 62px;
  height: 62px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-recovery-cloud { color: var(--backup-blue); }
.backup-recovery-key { color: var(--backup-gold); }
.backup-recovery-check { fill: var(--backup-blue); stroke: var(--backup-blue); }
.backup-recovery-checkmark { stroke: #fff; stroke-width: 2.5; }

.backup-recovery-paths h3 {
  margin: 8px 0 9px;
  color: var(--backup-night-ink);
}

.backup-recovery-paths p {
  max-width: 520px;
  margin: 0;
  color: var(--backup-night-muted);
  font-size: 0.95rem;
}

.backup-key-ownership {
  grid-column: 2;
  width: min(100%, 570px);
  min-height: 0;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: center;
  gap: 13px;
  margin: 6px 0 0 112px;
  padding: 14px 0;
  color: var(--backup-blue);
  border-top: 1px solid rgba(79, 145, 255, 0.32);
  border-bottom: 1px solid rgba(79, 145, 255, 0.32);
  border-radius: 0;
  font-size: 0.9rem;
  line-height: 1.45;
}

.backup-key-ownership svg {
  width: 40px;
  height: 40px;
  padding: 8px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  background: rgba(79, 145, 255, 0.1);
  border-radius: 6px;
  box-shadow: inset 0 0 0 1px rgba(79, 145, 255, 0.22);
}

/* ---------- Server accounting ---------- */

.backup-accounting-section {
  padding: clamp(88px, 11vw, 148px) 0;
  background: var(--home-bg);
}

.backup-accounting-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.62fr);
  align-items: end;
  gap: clamp(40px, 8vw, 120px);
  margin-bottom: clamp(46px, 6vw, 72px);
}

.backup-accounting-heading > p {
  max-width: 450px;
  margin: 0 0 5px;
  color: var(--home-muted);
}

.backup-ledger {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}

.backup-ledger > section {
  padding: clamp(32px, 5vw, 58px);
}

.backup-ledger-sealed {
  color: var(--backup-night-ink);
  background: var(--backup-night);
  border-radius: 14px 0 0 14px;
}

.backup-ledger-visible {
  color: var(--home-ink);
  background: var(--home-surface-subtle);
  border-radius: 0 14px 14px 0;
}

.backup-ledger-status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 28px;
  color: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  opacity: 0.72;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.backup-ledger-status svg {
  width: 22px;
  height: 22px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-ledger h3 {
  margin-bottom: 24px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.backup-ledger ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.backup-ledger li {
  padding: 18px 0;
  border-top: 1px solid var(--backup-rule-dark);
}

.backup-ledger li span {
  display: block;
  color: var(--backup-night-ink);
  font-weight: 650;
}

.backup-ledger li small {
  display: block;
  margin-top: 4px;
  color: var(--backup-night-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.backup-ledger-visible dl { margin: 0; }

.backup-ledger-visible dl div {
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--home-line);
}

.backup-ledger-visible dt {
  color: var(--home-ink);
  font-weight: 650;
}

.backup-ledger-visible dd {
  margin: 0;
  color: var(--home-muted);
  font-size: 0.88rem;
}

.backup-accounting-note {
  max-width: 940px;
  margin: 26px 0 0;
  color: var(--home-muted);
  font-size: 0.82rem;
}

/* ---------- Established principles ---------- */

.backup-principles-section {
  padding: clamp(88px, 11vw, 148px) 0;
  color: var(--backup-light-ink);
  background: var(--backup-light);
}

.backup-principles-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(50px, 9vw, 132px);
  align-items: start;
}

.backup-principles-copy {
  position: sticky;
  top: 120px;
}

.backup-principles-copy > p:not(.backup-section-label) {
  max-width: 480px;
  margin: 24px 0 0;
  color: var(--backup-light-muted);
}

.backup-principles-copy .backup-principles-disclaimer {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--backup-rule-light);
  font-size: 0.8rem;
}

.backup-principle-links {
  border-top: 1px solid var(--backup-rule-light);
}

.backup-principle-links > a {
  min-height: 196px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px 4px;
  color: var(--backup-light-ink);
  border-bottom: 1px solid var(--backup-rule-light);
  text-decoration: none;
  transition:
    padding 220ms cubic-bezier(0.22, 1, 0.36, 1),
    background-color 180ms ease-out;
}

.backup-principle-links > a:hover {
  padding-inline: 20px;
  background: var(--backup-light-soft);
}

.backup-principle-name {
  margin-bottom: 9px;
  color: var(--backup-blue-dark);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.backup-principle-links strong {
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

.backup-principle-links strong + span {
  max-width: 600px;
  margin-top: 8px;
  color: var(--backup-light-muted);
  font-size: 0.88rem;
}

.backup-principle-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: var(--backup-light-ink);
  font-size: 0.82rem;
  font-weight: 650;
}

.backup-principle-action svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.backup-our-model {
  grid-column: 1 / -1;
  margin-top: 4px;
  padding: 28px 32px;
  color: var(--backup-light-ink);
  background: var(--backup-blue-soft);
  border-radius: 12px;
}

.backup-our-model p { max-width: 920px; margin: 0; }

.backup-our-model .backup-security-limit {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid color-mix(in srgb, var(--backup-blue-dark) 24%, transparent);
}

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

.backup-faq-section {
  padding: clamp(88px, 11vw, 148px) 0;
  background: var(--home-bg);
}

.backup-faq-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(50px, 9vw, 132px);
  align-items: start;
}

.backup-faq-heading {
  position: sticky;
  top: 120px;
}

.backup-faq-heading > p:last-child {
  max-width: 440px;
  margin: 24px 0 0;
  color: var(--home-muted);
}

.backup-page .backup-faq {
  margin: 0;
  padding: 0;
}

.backup-page .backup-faq .faq-item {
  margin: 0;
  background: transparent;
  border-top: 1px solid var(--home-line);
  border-radius: 0;
  box-shadow: none;
}

.backup-page .backup-faq .faq-item:last-child {
  border-bottom: 1px solid var(--home-line);
}

.backup-page .backup-faq .faq-item:hover { background: transparent; }

.backup-page .backup-faq .faq-item summary {
  min-height: 64px;
  padding: 18px 44px 18px 0;
  color: var(--home-ink);
  font-size: 1rem;
}

.backup-page .backup-faq .faq-item summary::before { display: none; }

.backup-page .backup-faq .faq-item summary::after {
  display: block;
  right: 6px;
  width: 14px;
  height: 14px;
}

.backup-page .backup-faq .faq-item p {
  max-width: 68ch;
  padding: 0 44px 24px 0;
  color: var(--home-muted);
  font-size: 0.92rem;
}

/* ---------- Shared Access distinction ---------- */

.backup-sharing-section {
  color: var(--backup-night-ink);
  background:
    radial-gradient(100% 170% at 100% 0%, rgba(69, 185, 133, 0.12), transparent 54%),
    var(--backup-night);
  padding: clamp(68px, 9vw, 108px) 0;
}

.backup-sharing-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: clamp(42px, 8vw, 116px);
  align-items: end;
}

.backup-sharing-layout h2 { max-width: 13em; }

.backup-sharing-layout p:not(.backup-section-label) {
  max-width: 700px;
  margin: 24px 0 0;
  color: var(--backup-night-muted);
}

.backup-sharing-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.backup-button-light {
  color: var(--backup-night);
  background: #fff;
}

.backup-button-light:hover {
  color: var(--backup-night);
  background: #e9eef8;
  transform: translateY(-1px);
}

.backup-text-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  color: var(--backup-night-ink);
  font-size: 0.87rem;
  font-weight: 650;
  text-decoration: none;
}

.backup-footer { border-top: 0; }

.backup-footer .footer-links a {
  min-width: 44px;
  min-height: 44px;
}

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

@media (max-width: 1180px) {
  .backup-hero {
    background:
      linear-gradient(
        90deg,
        var(--backup-light) 0%,
        var(--backup-light) 48%,
        var(--backup-night) 48%,
        var(--backup-night) 100%
      );
  }

  .backup-hero-layout {
    grid-template-columns: minmax(430px, 0.92fr) minmax(520px, 1.08fr);
    gap: 38px;
  }

  .backup-hero-visual {
    min-height: 550px;
    grid-template-columns: minmax(118px, 0.62fr) minmax(102px, 0.48fr) minmax(270px, 1.4fr);
    gap: 14px;
  }

  .backup-mailbox::before { left: -14px; }
  .backup-mailbox::after { right: -14px; }
}

@media (max-width: 1080px) {
  .backup-page .home-nav {
    background: var(--backup-light-raised);
  }

  .backup-page .home-nav a:hover { background: var(--backup-light-soft); }
}

@media (max-width: 1080px) {
  .backup-hero {
    background: var(--backup-light);
  }

  .backup-hero-layout {
    width: 100%;
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .backup-hero-copy {
    width: min(100% - 48px, 760px);
    margin-inline: auto;
    padding: 76px 0 82px;
    text-align: center;
  }

  .backup-hero-copy h1,
  .backup-hero-lede { margin-inline: auto; }

  .backup-kicker { justify-content: center; }
  .backup-hero-actions { justify-content: center; }

  .backup-hero-assurances {
    max-width: 680px;
    margin-inline: auto;
    text-align: left;
  }

  .backup-hero-visual {
    min-height: 560px;
    padding: 62px 32px;
    background: var(--backup-night);
  }

  .backup-hero-visual::before { inset: 8% 4%; }

  .backup-film-heading,
  .backup-accounting-heading,
  .backup-sharing-layout {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .backup-film-heading > p,
  .backup-accounting-heading > p { max-width: 650px; }

  .backup-recovery-layout,
  .backup-principles-layout,
  .backup-faq-layout {
    grid-template-columns: 1fr;
  }

  .backup-recovery-copy,
  .backup-principles-copy,
  .backup-faq-heading {
    position: static;
  }

  .backup-recovery-copy > p:not(.backup-section-label):not(.backup-recovery-warning),
  .backup-recovery-warning,
  .backup-principles-copy > p:not(.backup-section-label),
  .backup-faq-heading > p:last-child {
    max-width: 680px;
  }

  .backup-key-ownership {
    grid-column: 1;
    margin-left: 112px;
  }

  .backup-our-model { grid-column: 1; }
}

@media (max-width: 720px) {
  .backup-page h1 { font-size: clamp(2.8rem, 13vw, 4.3rem); }
  .backup-page h2 { font-size: clamp(2rem, 9vw, 3.1rem); }

  .backup-film-support {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .backup-flow {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .backup-flow::before {
    top: 46px;
    bottom: 46px;
    left: 45px;
    right: auto;
    border-top: 0;
    border-left: 2px dotted color-mix(in srgb, var(--home-blue) 72%, var(--home-line));
  }

  .backup-flow li {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: 24px;
    padding: 0;
  }

  .backup-flow-icon {
    grid-row: 1 / 3;
    margin: 0;
  }

  .backup-flow li > p:nth-of-type(1) { margin-top: 6px; }

  .backup-ledger {
    grid-template-columns: 1fr;
  }

  .backup-ledger-sealed { border-radius: 14px 14px 0 0; }
  .backup-ledger-visible { border-radius: 0 0 14px 14px; }

  .backup-principle-links > a:hover { padding-inline: 4px; }
}

@media (max-width: 560px) {
  .backup-page h1 > span { display: inline; }

  .backup-hero-copy {
    width: min(100% - 28px, 760px);
    padding: 60px 0 64px;
  }

  .backup-hero-promise { margin-top: 24px; }

  .backup-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .backup-button { width: 100%; }

  .backup-hero-assurances {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .backup-hero-assurances li { font-size: 0.8rem; }
  .backup-hero-assurances strong { font-size: 0.82rem; }

  .backup-hero-visual {
    min-height: 430px;
    grid-template-columns: minmax(86px, 0.66fr) minmax(0, 1.34fr);
    grid-template-rows: 1fr 0.72fr;
    gap: 14px 20px;
    padding: 48px 18px;
  }

  .backup-device-phone {
    grid-column: 1;
    grid-row: 1;
    border-width: 5px;
    border-radius: 20px;
  }

  .backup-device-phone img { border-radius: 14px; }

  .backup-mailbox {
    grid-column: 1;
    grid-row: 2;
    padding: 0;
  }

  .backup-mailbox svg {
    width: min(70px, 80%);
    margin-bottom: 8px;
  }

  .backup-mailbox p { width: 110px; }
  .backup-mailbox strong { font-size: 0.7rem; }
  .backup-mailbox span { font-size: 0.75rem; }
  .backup-mailbox::before { display: none; }

  .backup-mailbox::after {
    top: 26%;
    right: -22px;
  }

  .backup-device-tablet {
    grid-column: 2;
    grid-row: 1 / 3;
    border-width: 5px;
    border-radius: 14px;
  }

  .backup-device-tablet img { border-radius: 9px; }

  .backup-hero-visual::after {
    top: 50%;
    left: 26%;
    right: 36%;
    transform: rotate(32deg);
  }

  .backup-film-section,
  .backup-path-section,
  .backup-recovery-section,
  .backup-accounting-section,
  .backup-principles-section,
  .backup-faq-section { padding-block: 78px; }

  .backup-video-frame { border-radius: 8px; }

  .backup-flow li {
    grid-template-columns: 68px minmax(0, 1fr);
    column-gap: 18px;
  }

  .backup-flow::before { left: 33px; }

  .backup-flow-icon {
    width: 68px;
    height: 68px;
  }

  .backup-flow-icon svg {
    width: 46px;
    height: 46px;
  }

  .backup-local-note { padding: 18px; }

  .backup-recovery-paths::before { left: 31px; }

  .backup-recovery-paths li {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
  }

  .backup-recovery-symbol {
    width: 64px;
    height: 64px;
  }

  .backup-recovery-symbol svg {
    width: 50px;
    height: 50px;
  }

  .backup-recovery-paths h3 { margin-top: 2px; }

  .backup-key-ownership {
    width: 100%;
    margin-left: 0;
  }

  .backup-ledger > section { padding: 28px 22px; }

  .backup-ledger-visible dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .backup-principle-links > a {
    min-height: 0;
    padding-block: 28px;
  }

  .backup-our-model { padding: 24px 22px; }

  .backup-page .backup-faq .faq-item summary {
    padding-right: 36px;
  }

  .backup-page .backup-faq .faq-item p {
    padding-right: 0;
  }

  .backup-sharing-actions { width: 100%; }
  .backup-text-link { align-self: center; }
}

@media (max-width: 350px) {
  .backup-page h1 { font-size: 2.55rem; }
  .backup-hero-copy { width: min(100% - 24px, 760px); }
  .backup-hero-visual { padding-inline: 12px; }
  .backup-mailbox p { max-width: 120%; }
}

/* Keep the deliberate hard light/dark composition in both system schemes.
   Only shared neutral sections follow the site-wide adaptive tokens. */
@media (prefers-color-scheme: dark) {
  .backup-page .home-header {
    background: rgba(248, 248, 251, 0.94);
  }

  .backup-page .home-header[data-scrolled="true"] {
    background: rgba(248, 248, 251, 0.99);
  }

  .backup-principles-section { color-scheme: light; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .backup-button,
  .backup-button svg,
  .backup-text-link svg,
  .backup-principle-links > a,
  .backup-page .home-header,
  .backup-page .home-nav,
  .backup-page .home-nav a,
  .backup-page .home-header-action,
  .backup-page .home-header-action svg,
  .backup-page .menu-toggle,
  .backup-page .menu-icon svg {
    transition: none;
  }

  .backup-button:hover,
  .backup-button:active,
  .backup-page .home-header-action:hover,
  .backup-page .home-header-action:active,
  .backup-page .menu-toggle:active { transform: none; }
}

@media print {
  .backup-page {
    color: #111;
    background: #fff;
  }

  .backup-page .home-header,
  .backup-page .home-footer,
  .backup-hero-visual,
  .backup-video-frame,
  .backup-hero-actions,
  .backup-sharing-actions { display: none !important; }

  .backup-hero,
  .backup-film-section,
  .backup-path-section,
  .backup-recovery-section,
  .backup-accounting-section,
  .backup-principles-section,
  .backup-faq-section,
  .backup-sharing-section {
    color: #111;
    background: #fff;
    padding: 32px 0;
  }

  .backup-hero-layout,
  .backup-film-heading,
  .backup-film-support,
  .backup-recovery-layout,
  .backup-accounting-heading,
  .backup-principles-layout,
  .backup-faq-layout,
  .backup-sharing-layout {
    min-height: 0;
    display: block;
  }

  .backup-hero-copy {
    padding: 0;
    text-align: left;
  }

  .backup-hero-lede,
  .backup-film-heading > p,
  .backup-film-support > p,
  .backup-transcript div,
  .backup-recovery-copy > p,
  .backup-recovery-warning,
  .backup-recovery-paths p,
  .backup-accounting-heading > p,
  .backup-accounting-note,
  .backup-principles-copy > p,
  .backup-faq-heading > p,
  .backup-sharing-layout p {
    color: #333 !important;
  }

  .backup-transcript {
    margin-top: 20px;
    border-color: #aaa;
  }

  .backup-transcript > *:not(summary) { display: block !important; }

  .backup-transcript summary::after { display: none; }

  .backup-recovery-copy,
  .backup-principles-copy,
  .backup-faq-heading { position: static; }

  .backup-ledger { display: block; }

  .backup-ledger > section {
    color: #111;
    background: #fff;
    border: 1px solid #999;
    border-radius: 0;
  }

  .backup-ledger li span,
  .backup-ledger li small { color: #111; }

  a { color: #111 !important; }
}