/* Chronology is one evidence-side sequence, never a heading kicker. */
.film-sequence { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 24px 0; padding: 0; list-style: none; font-size: 12px; line-height: 1.5; }
.film-sequence li { opacity: .65; }
[data-scene="0"] .film-sequence li:nth-child(1),
[data-scene="1"] .film-sequence li:nth-child(2),
[data-scene="2"] .film-sequence li:nth-child(3),
[data-scene="3"] .film-sequence li:nth-child(4) { opacity: 1; text-decoration: underline; text-underline-offset: .35em; }

/* Match Inter's fallback metrics while its language subsets load. */
@font-face {
  font-family: "Inter Metric";
  src: local("Arial");
  size-adjust: 107.4%;
  ascent-override: 90.2%;
  descent-override: 22.48%;
  line-gap-override: 0%;
}

:root {
  --film: #090908;
  --charcoal: #171612;
  --paper: #f2eee4;
  --paper-bright: #fffdf7;
  --ink: #181713;
  --gold: #d6af55;
  --gold-ink: #704b0d;
  --muted-dark: #bbb4a7;
  --muted-paper: #656057;
  --rule-dark: rgba(247, 242, 232, .18);
  --rule-paper: rgba(24, 23, 19, .16);
  --page-gutter: max(4.2vw, 24px);
  /* Inter's zero advance is 0.630859375em; ch can oscillate during subset loading. */
  --reading-measure: calc(72 * .630859375em);
  --touch-target: 44px;
  --cinematic-ease: cubic-bezier(.16, 1, .3, 1);
  --public-black: var(--film);
  --public-ink: var(--ink);
  --public-paper: var(--paper);
  --public-paper-deep: #e7dfce;
  --public-gold: var(--gold);
  --public-gold-ink: var(--gold-ink);
  --public-muted: var(--muted-paper);
  --public-rule: var(--rule-paper);
  --public-max: 1440px;
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--public-gold-ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  text-decoration: none;
}

.text-link::after { content: "→"; font-size: 1.2em; }
.closing-frame {
  position: relative;
  z-index: 2;
}
.closing-frame h2,
.public-display {
  margin: 0;
  font-family: Alexandria, Inter, sans-serif;
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: .98;
  text-wrap: balance;
}
.closing-frame .eyebrow,
.public-page--dark .eyebrow { color: var(--public-gold); }

.closing-frame {
  min-height: 86svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 100px 24px;
  background: var(--public-black);
  color: var(--public-paper);
  text-align: center;
}
.closing-frame h2 { max-width: 12em; font-size: clamp(54px, 8.4vw, 96px); }
.closing-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 48px; }

.public-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 36px;
  padding: 34px max(4.2vw, 24px);
  border-top: 1px solid rgba(242, 238, 228, .16);
  font-size: 13px;
}
.public-footer--dark { background: var(--public-black); color: #a9a398; }
.public-footer--light { background: var(--public-paper); color: var(--public-muted); border-color: var(--public-rule); }
.footer-mark { color: var(--public-paper); font-family: Alexandria, Inter, sans-serif; font-size: 24px; font-weight: 700; text-decoration: none; }
.public-footer--light .footer-mark { color: var(--public-ink); }
.public-footer nav { display: flex; flex-wrap: wrap; gap: 24px; }
.public-footer a { text-decoration: none; }
.public-footer a:hover { color: var(--public-gold); }
.public-footer p { margin: 0; }

.public-page {
  margin: 0;
  background: var(--public-paper);
  color: var(--public-ink);
  font-family: Inter, "Inter Metric", system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.public-page * { box-sizing: border-box; }
.public-page a { color: inherit; text-underline-offset: .23em; }
.public-page :focus-visible { outline: 2px solid var(--public-gold); outline-offset: 4px; }
[data-lang] { display: none; }
html[lang="en"] [data-lang="en"],
html[lang="vi"] [data-lang="vi"] { display: block; }
.public-page .skip-link { background: var(--public-black); color: var(--public-paper); }
.public-page--dark { background: var(--public-black); color: var(--public-paper); }

.product-hero {
  position: relative;
  min-height: calc(100svh - 84px);
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: clamp(40px, 8vw, 140px);
  max-width: var(--public-max);
  margin: auto;
  padding: clamp(70px, 9vw, 150px) max(4.2vw, 24px);
}
.product-hero__copy { position: relative; z-index: 2; }
.product-hero h1 { max-width: 9em; font-size: clamp(56px, 7vw, 96px); }
.product-hero__lead { max-width: 35em; margin: 30px 0 0; color: var(--public-muted); font-size: clamp(18px, 1.55vw, 24px); }
.public-page--dark .product-hero__lead { color: #aaa398; }
.product-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.product-demo-note { position: absolute; right: 0; bottom: 2%; margin: 0; color: var(--public-muted); font-size: 11px; letter-spacing: .08em; }
.public-page .button--paper { background: var(--public-black); color: var(--public-paper); }
.public-page .button--outline { border: 1px solid var(--public-ink); color: var(--public-ink); }
.public-page--dark .button--paper { background: var(--public-paper); color: var(--public-black); }
.public-page--dark .button--paper:hover { background: #fffdf7; color: var(--public-black); }
.public-page--dark .button--outline { border-color: rgba(242, 238, 228, .7); color: var(--public-paper); }

.phone-stack { position: relative; min-height: min(62vw, 760px); }
.phone-stack img {
  position: absolute;
  top: 3%;
  width: 46%;
  height: auto;
  border: 10px solid #111;
  border-radius: 38px;
  box-shadow: 0 30px 90px rgba(23, 20, 14, .25);
}
.phone-stack img:first-child { left: 8%; transform: rotate(-8deg); }
.phone-stack img:last-child { right: 5%; top: 13%; transform: rotate(7deg); }

.chapter-list { background: var(--public-paper); color: var(--public-ink); }
.product-chapter {
  min-height: 94svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(50px, 9vw, 150px);
  padding: clamp(90px, 12vw, 190px) max(4.2vw, 24px);
  border-top: 1px solid var(--public-rule);
}
.product-chapter:nth-child(even) .product-chapter__visual { order: 2; }
.product-chapter__copy { max-width: 640px; }
.product-chapter__copy h2 { margin: 0; font-size: clamp(44px, 5vw, 80px); }
.product-chapter__copy p { max-width: 30em; margin: 24px 0 0; color: var(--public-muted); font-size: clamp(18px, 1.5vw, 24px); }
.product-chapter__visual { position: relative; min-height: 680px; display: grid; place-items: center; overflow: hidden; background: #d8cfbd; }
.product-chapter__visual img { width: min(58%, 390px); height: auto; border: 9px solid #111; border-radius: 34px; box-shadow: 0 28px 70px rgba(24, 23, 19, .25); }
.product-chapter__visual--dark { background: #171612; }

.connection-bridge {
  display: grid;
  place-items: start;
  gap: 22px;
  padding: clamp(100px, 13vw, 200px) max(4.2vw, 24px);
  background: #d8cfbd;
  color: var(--public-ink);
}
.connection-bridge h2 { max-width: 12em; margin: 0; font-size: clamp(48px, 6vw, 96px); }
.connection-bridge > p:not(.eyebrow) { max-width: 40em; margin: 0; color: #504b43; font-size: clamp(18px, 1.5vw, 24px); }
.connection-bridge .text-link { margin-top: 12px; border-bottom: 1px solid currentColor; }

.handoff-hero { position: relative; grid-template-columns: minmax(0, .82fr) minmax(440px, 1.18fr); overflow: hidden; }
.handoff-hero .product-hero__copy { align-self: center; }
.handoff-hero h1 { max-width: 8.4em; font-size: clamp(52px, 6.2vw, 90px); }
.business-hero-capture,
.business-proof__capture {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: #12110f;
  box-shadow: 22px 38px 90px rgba(0, 0, 0, .38);
}
.business-hero-capture { align-self: center; transform: perspective(1400px) rotateY(-4deg); transform-origin: right center; }
.business-hero-capture img,
.business-proof__capture img { display: block; width: 100%; height: auto; }
.business-hero-capture figcaption,
.business-proof__capture figcaption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 16px;
  color: #b8b1a4;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.business-hero-capture figcaption strong,
.business-proof__capture figcaption strong { color: var(--public-gold); }
.business-continuity { padding: clamp(90px, 12vw, 180px) max(4.2vw, 24px); background: var(--public-paper); color: var(--public-ink); }
.business-continuity__intro { display: grid; grid-template-columns: 1.15fr .7fr; align-items: end; gap: clamp(36px, 8vw, 130px); }
.business-continuity__intro h2 { max-width: 10em; margin: 0; font-size: clamp(48px, 6vw, 88px); }
.business-continuity__intro p { max-width: 30em; margin: 0 0 8px; color: var(--public-muted); font-size: clamp(18px, 1.45vw, 23px); }
.business-continuity__steps { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: clamp(70px, 9vw, 130px); border-top: 1px solid var(--public-rule); border-bottom: 1px solid var(--public-rule); }
.handoff-stage {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 34px clamp(24px, 3vw, 50px) 42px 0;
  color: var(--public-ink);
}
.handoff-stage + .handoff-stage { padding-left: clamp(24px, 3vw, 50px); border-left: 1px solid var(--public-rule); }
.handoff-index { color: var(--public-gold); font-size: 12px; letter-spacing: .22em; }
.handoff-stage h3 { max-width: 12em; margin: auto 0 20px; font-size: clamp(27px, 2.4vw, 40px); line-height: 1.06; }
.handoff-stage p { max-width: 30em; margin: 0; color: var(--public-muted); font-size: clamp(16px, 1.2vw, 19px); }
.business-proof { display: grid; grid-template-columns: minmax(320px, .72fr) minmax(520px, 1.28fr); align-items: center; gap: clamp(50px, 8vw, 130px); padding: clamp(100px, 12vw, 180px) max(4.2vw, 24px); background: #12110f; color: var(--public-paper); }
.business-proof__copy h2 { max-width: 8em; margin: 0; font-size: clamp(48px, 5.6vw, 84px); }
.business-proof__copy p { max-width: 28em; margin: 28px 0 32px; color: #aaa398; font-size: clamp(18px, 1.45vw, 23px); }
.business-proof__copy .text-link { color: var(--public-paper); }
.business-proof__capture { box-shadow: 28px 44px 100px rgba(0, 0, 0, .44); }
.capability-index { padding: clamp(90px, 12vw, 180px) max(4.2vw, 24px); background: var(--public-paper); color: var(--public-ink); }
.capability-index h2 { max-width: 10em; font-size: clamp(48px, 6vw, 94px); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 80px; border-top: 1px solid var(--public-rule); }
.capability-grid span { min-height: 140px; padding: 24px 16px 24px 0; border-bottom: 1px solid var(--public-rule); font-size: clamp(18px, 1.5vw, 24px); }

.reading-page {
  width: min(100% - 2 * var(--page-gutter), 1200px);
  margin: auto;
  padding-bottom: clamp(80px, 10vw, 140px);
}
.reading-hero { padding: clamp(64px, 8vw, 110px) 0 clamp(48px, 6vw, 80px); }
.reading-hero h1 { max-width: 14em; font-size: clamp(38px, 5.2vw, 72px); line-height: 1.12; }
.reading-hero p { max-width: 42em; margin: 24px 0 0; color: var(--muted-paper); font-size: clamp(18px, 1.5vw, 21px); line-height: 1.7; }
.reading-page h2 { font: 600 clamp(23px, 2.2vw, 32px)/1.35 Alexandria, Inter, sans-serif; letter-spacing: -.02em; }
.reading-page p, .reading-page li { color: #4f4b43; font-size: 17px; line-height: 1.75; overflow-wrap: break-word; }
.reading-page a { font-weight: 500; }
.reading-page :focus-visible { outline-color: var(--gold-ink); }
.support-tasks { margin-top: clamp(20px, 3vw, 40px); border-bottom: 1px solid var(--rule-paper); }
.support-task { scroll-margin-top: 24px; border-top: 1px solid var(--rule-paper); }
.support-task summary { position: relative; display: grid; grid-template-columns: minmax(200px, .8fr) minmax(0, 1.2fr); gap: 24px 64px; align-items: center; min-height: 116px; padding: 28px 64px 28px 0; cursor: pointer; list-style: none; }
.support-task summary::-webkit-details-marker { display: none; }
.support-task summary > span { font: 600 clamp(23px, 2.2vw, 32px)/1.35 Alexandria, Inter, sans-serif; letter-spacing: -.02em; }
.support-task summary small { max-width: 34em; color: var(--muted-paper); font-size: 16px; line-height: 1.65; }
.support-task summary::before,
.support-task summary::after { content: ""; position: absolute; top: 50%; right: 4px; width: 20px; height: 1px; background: var(--ink); transition: transform 240ms var(--cinematic-ease); }
.support-task summary::after { transform: rotate(90deg); }
.support-task[open] summary::after { transform: rotate(0deg); }
.support-task summary:hover > span { color: var(--gold-ink); }
.support-task__answer { display: grid; grid-template-columns: minmax(200px, .8fr) minmax(0, 1.2fr); gap: 24px 64px; padding: 0 64px 42px 0; }
.support-task__answer > p { grid-column: 2; max-width: 42em; margin: 0; }
.support-task__actions { grid-column: 2; display: flex; flex-wrap: wrap; gap: 4px 28px; }
.support-task__actions a,
.recovery-links > a { display: inline-flex; align-items: center; min-height: var(--touch-target); padding: 8px 0; font-weight: 600; line-height: 1.5; text-underline-offset: .28em; }
.support-contact { display: grid; grid-template-columns: minmax(200px, .8fr) minmax(0, 1.2fr); gap: 24px 64px; margin-top: clamp(72px, 9vw, 128px); padding: clamp(48px, 6vw, 80px); background: var(--film); color: var(--paper); scroll-margin-top: 24px; }
.support-contact h2 { margin: 0; color: var(--paper); }
.support-contact p { margin: 0 0 14px; max-width: 38em; color: var(--muted-dark); }
.support-contact .text-link { color: var(--paper); text-underline-offset: .3em; }
.support-contact__address { margin-top: 4px !important; font-size: 14px !important; }
.error-page { min-height: 65svh; }
.reading-hero .error-code { margin: 0 0 20px; font: 500 16px/1.5 Inter, sans-serif; color: var(--muted-paper); }
.recovery-links { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; padding-top: 32px; border-top: 1px solid var(--rule-paper); }
.recovery-links > .button { padding: 12px 24px; }

@media (max-width: 900px) {
  .product-hero,
  .product-chapter { grid-template-columns: 1fr; }
  .product-hero { min-height: auto; }
  .handoff-hero,
  .business-proof,
  .business-continuity__intro { grid-template-columns: 1fr; }
  .business-hero-capture { width: min(100%, 720px); margin-top: 28px; transform: none; }
  .business-continuity__steps { grid-template-columns: 1fr; }
  .handoff-stage { min-height: 0; padding: 30px 0 36px; }
  .handoff-stage + .handoff-stage { padding-left: 0; border-top: 1px solid var(--public-rule); border-left: 0; }
  .handoff-stage h3 { margin-top: 80px; }
  .phone-stack { min-height: 700px; }
  .product-chapter:nth-child(even) .product-chapter__visual { order: 0; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .public-footer { grid-template-columns: 1fr; }
}

@media (min-width: 901px) and (max-height: 760px) {
  .product-hero { min-height: calc(100svh - 84px); padding-top: 36px; padding-bottom: 36px; }
  .product-hero h1 { font-size: clamp(50px, 5.2vw, 76px); }
  .product-hero__lead { margin-top: 18px; font-size: 18px; }
  .product-actions { margin-top: 22px; }
  .phone-stack { min-height: 570px; }
  .handoff-hero h1 { font-size: clamp(46px, 4.8vw, 68px); }
  .handoff-hero .product-actions { margin-top: 18px; }
  .business-hero-capture { width: min(100%, 520px); justify-self: end; }
}

@media (max-width: 800px) {
  .product-hero h1 { font-size: clamp(48px, 14vw, 72px); }
  .phone-stack { min-height: 560px; }
  .product-demo-note { right: 0; bottom: -22px; }
  .phone-stack img { width: 53%; border-width: 7px; border-radius: 28px; }
  .product-chapter { min-height: 0; }
  .product-chapter__visual { min-height: 560px; }
  .business-proof { padding-top: 90px; padding-bottom: 90px; }
  .business-proof__capture { min-width: 0; }
  .business-hero-capture figcaption,
  .business-proof__capture figcaption { display: grid; }
  .capability-grid { grid-template-columns: 1fr; }
  .public-footer nav { display: grid; grid-template-columns: 1fr 1fr; }
}

/* Shared shell. Page compositions own the scenes below this editorial rule. */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }
.site-header {
  --header-field: var(--film);
  --header-text: var(--paper);
  --header-muted: var(--muted-dark);
  --header-rule: var(--rule-dark);
  --header-accent: var(--gold);
  position: relative;
  z-index: 30;
  inset: auto;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: clamp(20px, 2vw, 32px);
  width: calc(100% - 2 * var(--page-gutter));
  height: auto;
  min-height: 84px;
  margin: 0 auto;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid var(--header-rule);
  border-radius: 0;
  box-shadow: none;
  background: var(--header-field);
  color: var(--header-text);
}
.public-page:not(.public-page--dark) .site-header {
  --header-field: var(--paper);
  --header-text: var(--ink);
  --header-muted: var(--muted-paper);
  --header-rule: var(--rule-paper);
  --header-accent: var(--gold-ink);
}
.site-brand {
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  color: inherit;
  font: 700 clamp(26px, 2.2vw, 34px)/1 Alexandria, Inter, sans-serif;
  letter-spacing: -.025em;
  text-decoration: none;
}
.site-nav { display: flex; align-items: center; gap: clamp(18px, 2vw, 30px); }
.site-nav a,
.header-sign-in,
.header-create,
.language-switch { font-size: 14px; font-weight: 500; line-height: 1.5; }
.site-nav a { display: inline-flex; align-items: center; min-width: var(--touch-target); min-height: var(--touch-target); color: inherit; text-decoration: none; }
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--header-accent); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: .5em; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.language-switch { display: flex; align-items: center; gap: 0; color: var(--header-muted); }
.language-switch button {
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}
.language-switch button[aria-pressed="true"],
.language-switch button.is-active { color: var(--header-accent); }
.header-sign-in,
.header-create {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}
.header-sign-in { padding: 0; border: 0; border-radius: 0; color: inherit; }
.header-sign-in:hover { background: transparent; color: var(--header-accent); text-decoration: underline; }
.site-header .header-create { padding: 10px 20px; border: 1px solid var(--header-text); border-radius: 999px; background: var(--header-text); color: var(--header-field); }
.site-header .header-create:hover { background: var(--header-field); color: var(--header-text); }
.nav__toggle {
  display: none;
  width: var(--touch-target);
  min-height: var(--touch-target);
  padding: 0;
  place-content: center;
  gap: 5px;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.nav__toggle span { width: 20px; height: 1px; background: currentColor; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: var(--touch-target);
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: 600 16px/1.5 Inter, system-ui, sans-serif;
  text-align: center;
  text-decoration: none;
}
.button--paper { background: var(--paper); color: var(--ink); }
.button--outline { border-color: currentColor; background: transparent; color: inherit; }
.public-page:not(.public-page--dark) .button--paper { background: var(--ink); color: var(--paper); }
.closing-frame .button--paper,
.public-page .closing-frame .button--paper { background: var(--paper); color: var(--ink); }
.closing-frame .button--outline { border-color: var(--paper); color: var(--paper); }
.button--outline:hover { border-color: var(--paper); background: var(--paper); color: var(--ink); }
.public-page:not(.public-page--dark) .button--outline:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.public-page--dark .button--outline:hover,
.closing-frame .button--outline:hover,
.public-page .closing-frame .button--outline:hover { border-color: var(--paper); background: var(--paper); color: var(--ink); }
.public-page:not(.public-page--dark) .button--outline:focus-visible { outline-color: var(--gold-ink); }
.public-page .closing-frame .button--outline:focus-visible { outline-color: var(--gold); }
.text-link { min-height: var(--touch-target); line-height: 1.5; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: 10px 16px;
  transform: translateY(-160%);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}
.skip-link:focus { transform: none; }
.headline-line { display: block; }
.public-footer { grid-template-columns: auto minmax(0, 1fr) auto; gap: 32px; }
.public-footer nav { justify-content: center; column-gap: 24px; row-gap: 4px; }
.public-footer a { display: inline-flex; align-items: center; min-width: var(--touch-target); min-height: var(--touch-target); }
.public-footer--light a:hover { color: var(--gold-ink); }
.reading-layout {
  display: grid;
  grid-template-columns: minmax(180px, .8fr) minmax(0, 2fr);
  align-items: start;
  gap: clamp(40px, 6vw, 96px);
  border-top: 1px solid var(--rule-paper);
  padding-top: 32px;
}
.reading-layout > .reading-index { position: static; }
.reading-index a { display: flex; align-items: center; min-height: var(--touch-target); padding: 9px 0; font-size: 14px; line-height: 1.6; text-decoration: none; }
.reading-index a:hover { color: var(--gold-ink); text-decoration: underline; }
.reading-layout article { min-width: 0; max-width: var(--reading-measure); }
.reading-body > section { padding: 0; }
.reading-body p { margin: 0 0 20px; }
.reading-body .fine { font-size: 14px; color: var(--muted-paper); }
.reading-body ul,
.reading-body ol { padding-left: 24px; margin: 0 0 24px; }
.reading-body li + li { margin-top: 10px; }
.reading-body a { display: inline-flex; align-items: center; min-height: var(--touch-target); max-width: 100%; }
.reading-layout p,
.reading-layout li { font-size: 17px; line-height: 1.75; overflow-wrap: break-word; }
.reading-layout h2 { margin: 40px 0 20px; padding-top: 28px; border-top: 1px solid var(--rule-paper); scroll-margin-top: 24px; }

/* Vietnamese keeps full-size controls and gains its own reading measure. */
html[lang="vi"] { --reading-measure: calc(76 * .630859375em); }
html[lang="vi"] .site-nav { gap: clamp(18px, 2vw, 30px); }
html[lang="vi"] .site-nav a,
html[lang="vi"] .header-sign-in { font-size: 14px; line-height: 1.5; }
html[lang="vi"] .public-display,
html[lang="vi"] .headline-line { line-height: 1.18; letter-spacing: -.025em; }
html[lang="vi"] .product-hero h1 { max-width: 11em; }
html[lang="vi"] .reading-hero h1 { max-width: 13em; line-height: 1.18; }
html[lang="vi"] .reading-hero p { max-width: 42em; line-height: 1.75; }
html[lang="vi"] .reading-layout p,
html[lang="vi"] .reading-layout li,
html[lang="vi"] .reading-page p,
html[lang="vi"] .reading-page li { line-height: 1.85; }

@media (max-width: 1250px) {
  .site-header { grid-template-columns: minmax(0, 1fr) auto auto; gap: 0 12px; min-height: 72px; }
  .header-actions { display: contents; }
  .site-brand { grid-column: 1; grid-row: 1; }
  .language-switch { grid-column: 2; grid-row: 1; }
  .nav__toggle { grid-column: 3; grid-row: 1; }
  .site-header .site-nav,
  .nav-open .site-header .site-nav {
    position: static;
    display: grid;
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
    gap: 0;
    padding: 16px 0;
    border: 0;
    background: transparent;
  }
  .site-header .header-sign-in { grid-column: 1 / -1; grid-row: 3; margin-bottom: 8px; }
  .site-header .header-create { grid-column: 1 / -1; grid-row: 4; margin-bottom: 12px; }
  .public-footer { grid-template-columns: 1fr; gap: 20px; }
  .public-footer nav { justify-content: start; }
  html[data-nav-ready] .site-header .nav__toggle { display: grid; }
  html[data-nav-ready] body:not(.nav-open) .site-header .site-nav,
  html[data-nav-ready] body:not(.nav-open) .site-header .header-sign-in,
  html[data-nav-ready] body:not(.nav-open) .site-header .header-create { display: none; }
}
@media (max-width: 800px) {
  .reading-layout { grid-template-columns: 1fr; gap: 32px; padding-top: 24px; }
  .support-task summary { grid-template-columns: 1fr; gap: 6px; min-height: 104px; padding: 22px 52px 22px 0; }
  .support-task__answer { grid-template-columns: 1fr; gap: 20px; padding: 0 0 34px; }
  .support-task__answer > p, .support-task__actions { grid-column: 1; }
  .support-contact { grid-template-columns: 1fr; gap: 20px; padding: 36px 24px; }
  .public-footer nav { display: flex; }
}
@media (prefers-reduced-motion: reduce) {
  .reading-layout > nav { position: static; }
  .button,
  .text-link { transition: none; }
  .button:hover { transform: none; }
}